CN205426287U

Movatterモバイル変換

Info

Publication number: CN205426287U
Application number: CN201620091125.4U
Authority: CN
Inventors: 胡桂标
Original assignee: SHANGHAI YUNYU INTELLIGENT TECHNOLOGY Co Ltd
Current assignee: SHANGHAI YUNYU INTELLIGENT TECHNOLOGY Co Ltd
Priority date: 2016-01-29
Filing date: 2016-01-29
Publication date: 2016-08-03
Anticipated expiration: 2026-01-29

Abstract

The utility model relates to a level gauging field discloses a machine vision charge level indicator, and light transmit section spare throws two bundle at least parallel lights and at least a branch ofly is the slope light of predetermineeing the contained angle with each parallel light to the material surface that awaits measuring, the image of each parallel light of image acquisition part collection and each slope light struck the parallel light facula that forms to the material surface that awaits measuring after and the bare spot that inclines to send the image for arithmetic processor, arithmetic processor carries out operation according to known necessary information to above -mentioned image and obtains material level information, the utility model discloses can greatly eliminate image acquisition part image -forming principle and the influence of factor such as zoom to image acquisition and calculation, simplify the surveying calculation volume, need not a large amount of demarcation, really realize machine vision to the continuous measurement of material, still can realize to the fixed point control of measuring point, acquire material surface inclination, acquire the material surface temperature, acquire the measurement space realtime graphic, it is accurate, reliable, succinctly to measure, the simple high efficiency of algorithm.

Description

Machine vision level-sensing device

Technical field

This utility model relates to level gauging field, particularly to a kind of machine vision level-sensing device.

Background technology

Fast development along with technology, Machine Vision Recognition and calculating is relied on to carry out level gauging the most concerned with the idea of supervision, because Machine Vision Recognition is possible not only to show in real time height or the distance of material (object), the image measuring object can be shown to user simultaneously, allow user can " seeing is believing " to monitoring that environment is monitored.

But, machine vision level monitoring equipment for many years, in actual production and life, not by real a large amount of uses and universal main cause, also it is because existing machine vision level monitoring apparatus and method for, it is impossible to meet the real situation in production scene or measuring method and cannot really realize in reality is measured.

Existing machine vision material position identifies that apparatus and method for is broadly divided into the following two kinds:

1, measured material image is carried out direct analysis judgement, it is judged that level of filler material.This kind of method directly gathers the image in material and measurement space, uses the image prestored in real time imaging and measurement equipment to contrast, it is judged that the image that real time imaging is shown meets that image in altimeter, does the judgement of discharging position.This kind of method, needs to prerecord and store the material image of each differing heights, and is stored in equipment.To carry out the demarcation of height and image in advance.

Such as Chinese Patent Application No. 01107328.4, publication date 2002.11.6, disclosing a kind of digital video frequency level indicator, this digital video frequency level indicator is connected with each other by video input unit, image pick-up card, microprocessor and display screen and forms.Using machine vision technique detection solid-material level, its detection material position step shows for material bit image collection, Digital Image Processing and analysis, storage.Video input unit is directed at tested material, video input unit is connected to the video inputs of image pick-up card, microprocessor controls image pick-up card and gathers material bit image by the sampling period that user sets, and this image is processed, the material position coordinate figure analyzed is compared calculating discharging position actual value with the dial gauge of demarcation, the variation tendency of material bit image, material position actual value and this value is shown on a display screen simultaneously.Its Main Means measuring material position is to utilize the reading on the dial gauge demarcated at the coordinate points of material position to obtain material position actual value.

Chinese Patent Application No. 99100675.5, publication date 2000.8.16, disclose a kind of defocus-focus distance measuring method, a kind of method utilizing image processing is done the object distance of extensive angle and is measured, i.e. utilize the camera lens that a pair a certain specific range is focal length, after obtaining the fuzzy image of actual scenery, recycle the convolution conversion of different inverse functions (defocusing the inverse function of function), it is divided into some blocks, and its block is defocused the contrast of situation, compared with the value tried to achieve in advance by comparing result and obtain distance value, obtain the estimated value of each point distance with the camera lens center of circle.

2, a single point light source is used to irradiate material, by the characteristics of image of single hot spot is judged, it is judged that level of filler material.This kind of method, by measuring the characteristics of image of single hot spot, measures level of filler material indirectly.

As: Chinese Patent Application No. 200710038493.8, publication date 2008.9.24, disclose a kind of material level measuring method based on machine vision and device, this device is made up of particular point light source, image acquisition machine, machine vision module etc..Using machine vision technique detection solid-material level, its detection material position step is: the light beam launched by the special point source being arranged on feed bin top, is incident upon material surface, is the taper of isosceles from the vertical section of feed bin.The level cross-sectionn of differing heights obtains the high-luminance light circular image of different-diameter, uses checking type light loop truss algorithm be analyzed and process by machine vision module, calculate the diameter of light source or size and then obtain material place value.Meanwhile, the device of real display material scene, position real scene image.

China Patent No. 201010509916.1, a kind of contactless coal bin coal position photoelectric measurement method and device, provide a kind of contactless, based on pixel count between laser facula imaging point and image center in image, obtain photoelectric measurement method and the device of material depth value in feed bin, belong to level gauging technical field.It is particularly well-suited to the depth survey of coal bin coal position.This utility model device is at tubular coal bunker spindle top stationary digital camera and generating laser, camera light path is made to be perpendicular to material surface, generating laser is arranged in the position from the horizontal by θ angle, it is ensured that the imaging region of laser facula can be incident upon on the material surface in the range of viewing field of camera.Camera uses N shelves segmentation to focus, and all can absorb image clearly to meet at the different coal positions of coal bunker.Use DSP as processor cores, by calculating the pixel count between laser facula imaging point and image center, the depthmeter of the corresponding different pixels number average that inquiry is demarcated in advance, complete depth detection.

The most existing machine vision recognition method, it is impossible to the reason really used is, have ignored video and vision facilities image-forming principle characteristic: the image of area as even if, under same imaging focal length parameter, the least from image acquisition equipment more long-term plan picture；If considering further that acquisition picture rich in detail needs zoom, same area graph picture image size in image acquisition equipment is more complicated and changeable.Therefore prior art, no matter by directly obtaining image or passing through image and pre-stored image comparative approach or directly calculate projected spot area or the method for deviation pixel, all have ignored the basic image-forming principle of image acquisition equipment and more complicated Parameters variation that image acquisition equipment zoom brings, all cannot really implement, the most just cannot obtain material accurate water level.

Utility model content

Utility model purpose: for problems of the prior art, this utility model provides a kind of machine vision level-sensing device, the impact that the factors such as image acquisition component image-forming principle and zoom calculate can be eliminated for image, i.e. can realize the continuous measurement to level of filler material, also can realize, to the fixed point monitoring measuring point, also can measuring the angle of inclination on material surface, measure accurate, reliable, method is succinct, and algorithm is simple and efficient.

Technical scheme: this utility model provides a kind of machine vision level-sensing device, including light emitting members, image acquisition component, arithmetic processor and signal output component, described light emitting members and described image acquisition component are arranged in the measurement space of material place to be measured, and described arithmetic processor connects described image acquisition component and described signal output component respectively；Described light emitting members for described material surface to be measured projection at least two bundle directional lights and the most a branch of be the oblique light of default angle with each described directional light；Described image acquisition component for gather each described directional light and each described oblique light be irradiated to described material surface to be measured after the directional light hot spot that formed and the image of oblique light hot spot, and described image is sent to described arithmetic processor；Described arithmetic processor is for according to the image pitch in described image between the image pitch in described image and each described oblique light hot spot and each described directional light hot spot between the actual pitch between the actual pitch between each described directional light, the light source of each described oblique light and each described directional light, each described default angle, each described directional light hot spot, calculation process obtains the material position information of the material described to be measured at the facula position of each described oblique light, and described material position information signal is transferred to described signal output component；And/or, when described arithmetic processor arrives preset height for the material position according to described material to be measured, image pitch in described image between each described directional light hot spot, image pitch in described image between each described directional light hot spot and each described inclination hot spot, and described image acquisition component Real-time Collection to image in, image pitch between each directional light hot spot, image pitch between each described directional light hot spot and each described oblique light hot spot, calculation process logical judgment goes out whether described material to be measured arrives described preset height, and the consequential signal of described logical judgment is transferred to described signal output component；Described signal output component is for exporting the consequential signal of described material position information and/or described logical judgment.

Preferably, in each described directional light hot spot and each described oblique light hot spot, at least two described directional light hot spots and a described oblique light hot spot are positioned at same straight line.

Preferably, two described directional light hot spots being located along the same line described in and described oblique light hot spot are respectively positioned on the same controlling level of described material to be measured.

Further, if described light emitting members projects at least two directional lights restrainted and at least two bundles and the oblique light that each described directional light is default angle to described material surface to be measured；The most described arithmetic processor is according to the image pitch in described image between the image pitch in described image, each described oblique light hot spot and each described directional light hot spot between the actual pitch between the actual pitch between each described directional light, the light source of each described oblique light and each described directional light, each described default angle, each described directional light hot spot, calculation process obtains the surface slope information of described material to be measured, and described surface slope information signal is transferred to described signal output component；Described material position information, the result of described logical judgment and/or described surface slope information signal are exported by described signal output component.

Preferably, in oblique light hot spot described in directional light hot spot described at least two and at least two, oblique light hot spot described in directional light hot spot described at least two and at least two is positioned at same straight line and the incline direction along the described same inclined surface of material to be measured is arranged in order.

Further, if described light emitting members restraints directional light and at least two bundles and the oblique light that each described directional light is default angle to described material surface to be measured projection at least four；The most described arithmetic processor is according to the actual pitch between each described directional light, actual pitch between each plane formed between the most described directional light, difference in height between the light source of the most described oblique light, actual pitch between light source and each described directional light of each described oblique light, each described default angle, image pitch in described image and the image pitch in described image between each described oblique light hot spot and each described directional light hot spot between each described directional light hot spot, calculation process obtains the surface slope information of described material to be measured, and described surface slope information signal is transferred to described signal output component；Described material position information, the result of described logical judgment and/or described surface slope information signal are exported by described signal output component.

Preferably, in oblique light hot spot described in directional light hot spot described at least four and at least two, oblique light hot spot described in directional light hot spot described at least four and at least two is respectively positioned on the described same inclined surface of material to be measured, and directional light hot spot described at least two and at least one described oblique light hot spot are positioned at the first straight line, on first controlling level, directional light hot spot and at least one described oblique light hot spot described at least two is additionally also had to be positioned at the second straight line, on second controlling level, the light of two the described directional light hot spots being positioned on described first straight line constitutes the first plane, the light of two the described directional light hot spots being positioned on described second straight line constitutes the second plane, described first plane is parallel with described second plane.

Further, described machine vision level-sensing device also includes that parts are stablized in damping, and described damping is stablized parts and effectively contacted with described light emitting members and/or described image acquisition component.

Preferably, described damping stablizes parts for machinery passive type or gyroscope active control type.

Further, described machine vision level-sensing device also includes that dust-proof ash disposal parts, described dust-proof ash disposal parts are positioned near described image acquisition component and/or described light emitting members and are connected with described arithmetic processor.

Preferably, described dust-proof ash disposal parts are gas blowing mechanism or brusher motivation structure.

Further, described machine vision level-sensing device also includes that illuminace component, described illuminace component are fixed on container inside, described material place to be measured and are connected with described arithmetic processor.

Preferably, described illuminace component is visible illumination equipment or infrared ray non-visible light luminaire.

Further, described machine vision level-sensing device also includes the infrared or temperature-measuring part of Principles of Laser, temperature information for telemeasurement material surface, described temperature-measuring part is connected with described arithmetic processor, described temperature information is sent to described arithmetic processor by described temperature-measuring part, and described temperature information is exported by described arithmetic processor again by described signal output component.

Further, described light emitting members is additionally operable to project the fill-in light being perpendicular to described directional light.

Further, described arithmetic processor is additionally operable to that described image carries out calculation process and obtains the three-dimensional image of described material to be measured, and is exported through described signal output component by described three-dimensional image.

Further, described image acquisition component is additionally operable to gather flame or burning image, and flame or burning image are sent to described arithmetic processor, described arithmetic processor is additionally operable to when receiving described flame or burning image control external alarm equipment alarm, or described flame or burning image are exported by described arithmetic processor through described signal output component.

The most described image acquisition component is additionally operable to gather the ambient image in described measurement space, and described ambient image is sent to described arithmetic processor, and described ambient image is exported by described arithmetic processor again by described signal output component.

Preferably, described first reference tilt light hot spot, described first reference directional light hot spot and described second are respectively positioned on the same controlling level of described material to be measured with reference to directional light hot spot.

Preferably, if in described S1, restraint directional light and at least two bundles and the oblique light that each described directional light is default angle to described material surface to be measured projection at least two；Then in described S5, according to the image pitch in described image between the image pitch in described image, each described oblique light hot spot and each described directional light hot spot between the actual angle between the actual pitch between the actual pitch between each described directional light, the light source of each described oblique light and each described directional light, each described oblique light and each described directional light, each described directional light hot spot, calculation process obtains the surface slope information of described material to be measured；In described S6, described material position information, the result of described logical judgment and/or described surface slope information signal are exported.

Preferably, if in described S1, restraint directional light and at least two bundles and the oblique light that each described directional light is default angle to described material surface to be measured projection at least four；Then in described S5, according to the actual pitch between each described directional light, actual pitch between light source and each described directional light of each described oblique light, actual angle between each described oblique light and each described directional light, actual pitch between each plane formed between the most described directional light, difference in height between the light source of the most described oblique light, image pitch in described image between each described directional light hot spot, image pitch in described image between each described oblique light hot spot and each described directional light hot spot, calculation process obtains the surface slope information of described material to be measured；In described S6, described material position information, the result of described logical judgment and/or described surface slope information signal are exported.

Beneficial effect: the directional light that in this utility model, light emitting members is launched, be equivalent to a scale, and this scale is held essentially constant with the change of level of filler material on material surface, expect in the light spot image that the oblique light hot spot of position is formed after being collected by image acquisition component with the parallel hot spot as scale simultaneously because be responsible for measuring, the both image change characteristics caused because of the factor such as image-forming principle and zoom is also basically identical, so after algorithm is brought into this scale parameter, the factors such as image acquisition component image-forming principle and zoom that can eliminate have a strong impact on for image calculating；The optical scale projected by this, the zoom of image acquisition component or other factors are basically eliminated for the damaging influence of the measuring method in this utility model.

This level-sensing device has with the beneficial effect of measuring method:

1, the machine vision accurate measurement to level of filler material is really realized；

2, without carrying out a large amount of staking-out works such as scaling board demarcation；

3, the test constantly to level of filler material is really realized；

4, certainty of measurement is far above existing machine vision metrology method；

5, realize the measurement to material surface tilt condition, for application such as automatic blendings, there is very active influence；

6, presenting of material surface three-dimensional image can be realized；

7, the monitoring of material surface temperature, combustion case, real-time condition can be provided；

8, algorithm is succinct and efficient.

Accompanying drawing explanation

Fig. 1 is that in embodiment 1, the signal of machine vision level-sensing device flows to schematic diagram；

Fig. 2 is the generation type schematic diagram of directional light and oblique light in embodiment 1；

Fig. 3 is the generation type schematic diagram of directional light and oblique light in embodiment 1；

Fig. 4 is schematic diagram when fill-in light and directional light and oblique light cross action in embodiment 6；

Fig. 5 is the method schematic diagram (material surfacing) calculating material position in embodiment 8；

Fig. 6 is the method schematic diagram (material table mask has gradient) calculating material position in embodiment 8；

Fig. 7 is the method schematic diagram calculating material position in embodiment 8；

Fig. 8 is the method schematic diagram calculating material position in embodiment 9；

Fig. 9 is the method schematic diagram calculating material position in embodiment 10；

Figure 10 is the method schematic diagram calculating material position in embodiment 11；

Figure 11 is the method schematic diagram calculating material position in embodiment 12；

Figure 12 is the method schematic diagram calculating material position in embodiment 12；

Figure 13 is the method schematic diagram calculating material position in embodiment 13；

Figure 14 is the method schematic diagram calculating material position in embodiment 13.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is described in detail.

Embodiment 1:

Present embodiments provide for a kind of machine vision level-sensing device, as shown in Figure 1, including light emitting members, image acquisition component, arithmetic processor and signal output component, light emitting members and image acquisition component are arranged in the measurement space of material place to be measured, and arithmetic processor connects image acquisition component and signal output component respectively；

Light emitting members for be perpendicular to material surface to be measured projection at least two bundle the directional light of a certain cross section of material to be measured and the most a branch of be the oblique light of default angle with each directional light；

Image acquisition component for gather each directional light and each oblique light be irradiated to material surface to be measured after the directional light hot spot that formed and the image of oblique light hot spot, and send an image to arithmetic processor；

Arithmetic processor is for according to image pitch in the picture between image pitch and each oblique light hot spot and each directional light hot spot in the picture between the actual pitch between the actual pitch between each directional light, the light source of each oblique light and each directional light, each default angle, each directional light hot spot, calculation process obtains the material position information of the material to be measured at the facula position of each oblique light, and material position information signal is transferred to signal output component；

And/or, when arithmetic processor arrives preset height according to the material position of material to be measured, image pitch in the picture between each directional light hot spot, each directional light hot spot and each tilt image pitch in the picture between hot spot, and image acquisition component Real-time Collection to image in, image pitch between image pitch between each directional light hot spot, each directional light hot spot and each oblique light hot spot, calculation process logical judgment goes out whether material to be measured arrives preset height, and the consequential signal of logical judgment is transferred to signal output component；

Signal output component is for by the consequential signal output of material position information and/or logical judgment.

Preferably, in the present embodiment, it is also possible to increase temperature-measuring part to machine vision level-sensing device, infrared or laser temperature-measuring parts are preferably used, are arranged in space, material place to be measured, for measuring the temperature information on material surface；Temperature-measuring part can by measurement to temperature information be sent to arithmetic processor, temperature information is exported by arithmetic processor again by signal output component.

Preferably, in the present embodiment, if what light emitting members was launched much restraints directional lights and much restraints oblique light, image acquisition component just can collect and comprise some directional light hot spots and the image of oblique light hot spot, after arithmetic processor is by using existing image processing techniques means that these images with some hot spots are carried out calculation process, just can obtain the three-dimensional image of determinand material, more directly material information is showed user.Arithmetic processor can also generate more than one comprehensive material position information or more than one comprehensive angle of inclination information or meansigma methods according to the material position information at multiple inclination hot spots, multiple surficial inclination information through comprehensive calculation process.

Preferably, image acquisition component in present embodiment can also gather flame or burning image, and these images are sent to arithmetic processor, arithmetic processor just can interpolate that space, material place to be measured after receiving these images again in, material to be measured catches fire, just can control alarm equipment alarm in real time or image is exported to user by signal output component, allow users to learn in time field conditions, take measures in time；Additionally, image acquisition component in present embodiment is in addition to can collecting the image of directional light hot spot and oblique light hot spot, can also material condition environment real scene image to be measured in Real-time Collection measurement space, and by these image transmittings to arithmetic processor, arithmetic processor the material situation being more visually known in measurement space for user through signal output component output.

It addition, parallel edges such as Fig. 2 or parallel surface such as Fig. 3 that the directional light in present embodiment can be alternatively in light beam for parallel light, an oblique light the most oblique light ray is alternatively an inclined side such as Fig. 2 or inclined plane such as Fig. 3 in light beam.

Additionally need it is emphasised that: directional light truly is difficult to real realization in reality, and the directional light in present embodiment also includes in the range of measurement space that it dissipates and affects the negligible light close to directional light for this measuring method close to the light of real directional light or in the range of measurement.

Embodiment 2:

Present embodiment is a specific embodiment of embodiment 1, in the present embodiment, light emitting members and image acquisition component are arranged at material place to be measured container top, light emitting members for be perpendicular to material surface to be measured projection two bundle the directional light of a certain cross section of material to be measured and a branch of be the oblique light of default angle with any a branch of directional light, and two bundle directional lights and after a branch of oblique light is irradiated on material surface to be measured, two corresponding directional light hot spots and an oblique light hot spot are located along the same line；

Arithmetic processor for according to the actual pitch between two directional lights, the light source of oblique light and and its be default angle directional light between actual pitch, preset image pitch in the picture between angle, two directional light hot spots and oblique light hot spot and and its be default angle directional light hot spot between image pitch in the picture, calculation process obtains the material position information of the material to be measured at the facula position of oblique light, and material position information signal is transferred to signal output component.

And/or, when arithmetic processor arrives preset height for the material position according to material to be measured, image pitch in the picture, two directional light hot spots and tilt between hot spot image pitch in the picture between two directional light hot spots, and image acquisition component Real-time Collection to image in, image pitch between each two directional light hot spots, the image pitch between two directional light hot spots and oblique light hot spot, calculation process logical judgment goes out whether material to be measured arrives preset height, and the consequential signal of logical judgment is transferred to signal output component.

In addition, present embodiment is identical with embodiment 1, does not repeats.

Embodiment 3:

Present embodiment is the further improvement of embodiment 2, mainly the improvement is that, in embodiment 2, two directional light hot spots and an oblique light hot spot are located along the same line, but when material surface has the gradient to be not plane, the probably residing level of filler material height of three hot spots being located along the same line is different, when gathering the image of three the most from top to bottom, when being easy to cause gathering image because the position of three hot spot range image acquisition component is different, the focal length of three hot spots is different, and then cause in the image collected that the image pitch of three can not be the most corresponding with actual pitch, and then cause the material position information inaccuracy that subsequent arithmetic processor calculation process obtains；So in the present embodiment, can select to be positioned at same straight line two the directional light hot spots being positioned on same controlling level and the oblique light hot spot acquisition target as image acquisition component, this makes it possible to ensure that the height of three's range image acquisition component is identical, and then focal length is identical when gathering image, the image collected will not distortion, can relatively accurately reflect the actual positional relationship between three, final arithmetic processor to this accurately image procossing expected an information and/or logical judgment result accurately.

In addition, present embodiment is identical with embodiment 2, does not repeats.

Embodiment 4:

Present embodiment is roughly the same with embodiment 1, differ primarily in that: in embodiment 1, light emitting members launches at least two bundle directional light and the most a branch of oblique light, by directional light and oblique light being projected the collection of the light spot image on material to be measured, and the controlling level information of material to be measured at oblique light facula position after image is carried out calculation process, can be obtained, and/or, when material is arrived preset height and carries out logical judgment；But at the scene in environment, usually there is certain slope on the surface of material, at different gradient, the height of material position is different, and only measuring height of some point on material to be measured the most far away can not the monolith position feature of reflection material, it is impossible to the material position of material to be measured is carried out omnibearing monitoring；And the controlling level of material table face to be measured certain point can not only be monitored in the present embodiment, and the surface slope of material to be measured can be monitored, to monitor the material position information of material to be measured the most intuitively.

Specifically, in the present embodiment, light emitting members can be perpendicular to the directional light of material cross section to be measured and at least two bundles and the oblique light that each directional light is default angle to material surface to be measured projection at least two bundle；Above-mentioned directional light and oblique light are irradiated to the surface of material to be measured and are formed after hot spot, and at least two directional light hot spot and at least one oblique light hot spot are located along the same line and are arranged in order along the incline direction of the same inclined surface of material to be measured；Image acquisition component gathers the above-mentioned at least two directional light hot spot being located along the same line and be arranged in order and the image of at least one oblique light hot spot along the incline direction of the same inclined surface of material to be measured, and it is sent to arithmetic processor, arithmetic processor is further according to the actual pitch between each directional light, actual pitch between light source and each directional light of each oblique light, each default angle, image pitch in the picture between image pitch and each oblique light hot spot and each directional light hot spot in the picture between each directional light hot spot, calculation process obtains the surface slope information of material to be measured；Obviously, while obtaining surface slope information, it is also possible to obtain the material position information at each oblique light facula position and expect that position reaches the logical judgment result of a certain preset height.

Embodiment 5:

Present embodiment is roughly the same with embodiment 4, differ primarily in that the mode obtaining material table plane inclination is different, and the precision of the material table plane inclination got in present embodiment is higher, during because there is the gradient on material surface, it is positioned at the level of filler material height residing for each hot spot being arranged in order from top to bottom on the same inclined surface of same straight line different, when gathering the image of each hot spot the most from top to bottom, when being easy to cause gathering image because the position of each hot spot range image acquisition component is different, the focal length of each hot spot is different, and then cause in the image collected that the image pitch of each hot spot can not be the most corresponding with actual pitch, and then cause the material position information inaccuracy that subsequent arithmetic processor calculation process obtains；And in the present embodiment it can be avoided that above-mentioned error.

Specifically, in the present embodiment, light emitting members can be perpendicular to the directional light of material cross section to be measured and at least two bundles and the oblique light that each directional light is default angle to material surface to be measured projection at least four bundle；After above-mentioned directional light and oblique light are irradiated to the surface formation hot spot of material to be measured, at least four directional light hot spot and at least two oblique light hot spot are respectively positioned on the same inclined surface of material to be measured, and at least two of which directional light hot spot and at least one oblique light hot spot are positioned at the first straight line, on first controlling level, at least two directional light hot spot and at least one oblique light hot spot is additionally also had to be positioned at the second straight line, on second controlling level, and the light of two the directional light hot spots being positioned on the first straight line constitutes the first plane, the light being positioned on the second straight line two directional light hot spots constitutes the second plane；Image acquisition component gathers above-mentioned first straight line, on first controlling level and the second straight line, the image of six hot spots on the second controlling level is also sent to arithmetic processor, arithmetic processor is further according to the actual pitch between each directional light, actual pitch between light source and each directional light of each oblique light, each default angle, actual pitch between each plane formed between directional light two-by-two, difference in height between the light source of oblique light two-by-two, image pitch in the picture between image pitch and each oblique light hot spot and each directional light hot spot in the picture between each directional light hot spot, calculation process obtains the surface slope information of material to be measured；Obviously, while obtaining surface slope information, it is also possible to obtain the material position information at each oblique light facula position and expect that position reaches the logical judgment result of a certain preset height.

Visible, ensure that the height for each hot spot range image acquisition component of calculation process being located along the same line is identical in these cases, and then focal length is identical when gathering image, the image collected will not distortion, can relatively accurately reflect the actual positional relationship between each hot spot, final acquisition expects position information more accurately.

Embodiment 6:

Present embodiment is the further improvement of embodiment 1, mainly the improvement is that, in the present embodiment, light emitting members is applied not only to project directional light and oblique light, it is additionally operable to project the fill-in light being perpendicular to directional light, the effect of this fill-in light is in order to assistant images acquisition component collects light spot image, because the dust in space, usual material place to be measured is bigger, dust has scattering process to directional light and oblique light, after directional light and oblique light arrive material surface, the reason hot spot being likely to be due to dust bigger is the most unintelligible, if now directly using image acquisition component that light spot image is acquired, the image collected can be smudgy, eventually result in follow-up operation result error bigger, level of filler material degree of accuracy is relatively low；

For these reasons, the function launching fill-in light it is provided with in the present embodiment to light emitting members, fill-in light is perpendicular to directional light, and fill-in light can produce cross point with directional light and oblique light, such as Fig. 4, it is advantageous in that: 1, the light of this intersection is strong, so the hot spot brightness after this cross point projects material surface to be measured can be strengthened such that it is able to ensure that image acquisition component collects and compare light spot image clearly compared to not having intersection；As long as 2, arithmetic processor gathers two or more speckle on fill-in light hot spot, directional light hot spot and/or oblique light hot spot place straight line, just can calculate place straight line, further arithmetic processor can calculate fill-in light key feature information with directional light and the cross point of oblique light thus needed for obtaining calculating, and then process for subsequent arithmetic and obtain the material position information of accurate material to be measured and made preparation.

Embodiment 7:

Present embodiments provide for a kind of method that material position measured by machine vision level-sensing device used in embodiment 1, the method comprises the following steps:

S1: to material surface to be measured projection at least two bundle be perpendicular to the directional light of a certain cross section of material to be measured and the most a branch of be the oblique light of default angle with each directional light, each directional light and each oblique light are correspondingly formed directional light hot spot and oblique light hot spot after being irradiated to material surface to be measured；

S2: the actual angle between actual pitch and each oblique light and cross section between the actual pitch between each directional light that prestores, the light source of each oblique light and each directional light；

Or, prestore material to be measured material position arrive preset height time, image pitch in the picture between each directional light hot spot, each directional light hot spot and each tilt image pitch in the picture between hot spot, and image acquisition component Real-time Collection to image in, the image pitch between the image pitch between each directional light hot spot, each directional light hot spot and each oblique light hot spot；

S3: gather each directional light hot spot and the image of each oblique light hot spot；

S4: image is carried out calculation process, obtains between each directional light hot spot image pitch in the picture between image pitch, each oblique light hot spot and each directional light hot spot in the picture；

S5: according to the image pitch between the image pitch between the actual angle between the actual pitch between the actual pitch between each directional light, the light source of each oblique light and each directional light and each oblique light and each directional light, each directional light hot spot, each oblique light hot spot and each directional light hot spot, calculation process obtains the material position information of the material to be measured at the facula position of each oblique light；

And/or, according to image pitch in the picture between each directional light hot spot, each directional light hot spot and each tilt image pitch in the picture between hot spot, and image acquisition component Real-time Collection to image in, image pitch between image pitch between each directional light hot spot, each directional light hot spot and each oblique light hot spot, calculation process logical judgment goes out whether material to be measured arrives preset height；

S6: by the consequential signal output of material position information and/or logical judgment.

Embodiment 8:

Present embodiment is a specific embodiment of embodiment 7, and the present embodiment comprises the steps of

S1, to material surface to be measured projection at least two bundle be perpendicular to the directional light of a certain cross section of material to be measured and the most a branch of be the oblique light of default angle with each directional light, each directional light and each oblique light are correspondingly formed directional light hot spot and oblique light hot spot after being irradiated to material surface to be measured；Select at least two directional light hot spot being wherein located along the same line and at least one oblique light hot spot as with reference to directional light hot spot and reference tilt light hot spot；

Such as Fig. 5, shown in 6 and 7, the reference tilt light hot spot A that definition is located along the same line be the first reference tilt light hot spot, two be respectively first with reference to directional light hot spots and second with reference to directional light hot spot (now tri-hot spots of A, B and C are arranged in order) with reference to directional light hot spot (B and C)；Wherein S1, S2 and S3 are respectively the light source of the first reference tilt light hot spot A, the light source of the first reference directional light hot spot B and second light source with reference to directional light hot spot B.

S2, prestores first with reference to the actual angle theta between actual pitch T1 between actual pitch D1, the light source of the first reference tilt light hot spot A and the light of the second reference directional light hot spot C between the light S3C of light S2B and the second reference directional light hot spot C of directional light hot spot B, the first reference tilt light S1A and second reference directional light S3C；(note: actual pitch mentioned here is not the vertical dimension to line of the point on ordinary meaning, but interplanar spacing viewed from above, owing to each light source in Fig. 2 and image acquisition component are respectively positioned on above material to be measured, so above-mentioned D1 and T1 is from the downward observable plan range of image acquisition component, about the explanation of actual pitch in described below, if no special instructions, equivalent in meaning with here)

S3: Real-time Collection first is with reference to directional light hot spot B, the second reference directional light hot spot C and image of the first reference tilt light hot spot A；

S4: epigraph is carried out calculation process, obtain first with reference to directional light hot spot B and second with reference to image pitch D1 ', the first reference tilt light hot spot A in the picture between directional light hot spot C and second with reference to image pitch D2 ' in the picture between directional light hot spot C；

S5: obtain the material position information of material to be measured at the first reference tilt light hot spot location A according to D1, T1, θ, D1 ' and D2 ' calculation process.

Material position information spacing HA between the light source S1 of the first reference tilt light hot spot A to first reference tilt light hot spot A of material the most to be measured represents, then HA=(D2 ' * D1/D1 '-T1)/tan θ；

Such as Fig. 7, if the light source that T1 is the first reference tilt light hot spot A and first is the first reference tilt light S1A and first with reference to the actual angle between directional light S2B, D2 ' with reference to the actual pitch between the light of directional light hot spot B, θ is the first reference tilt light hot spot A and first with reference to image pitch in the picture between directional light hot spot B, then HA=(T1-D2 ' * D1/D1 ')/tan θ；

So calculating formula | D2 ' * D1/D1 '-the T1 |/tan θ that can be summarized as HA=of HA；

S6: above-mentioned HA signal is exported.

Embodiment 9:

Present embodiment is the further improvement of embodiment 8, mainly the improvement is that, in embodiment 8, first reference tilt light hot spot A, first is only located along the same line with reference to directional light hot spot C with reference to directional light hot spot B and second, this straight line is probably the straight line gone down along one, the material surface to be measured gradient, now A, B and C 3 is located at different controlling levels, such as Fig. 6 or 7, when gathering the image of three the most from top to bottom, when being easy to cause gathering image because the position of three hot spot range image acquisition component is different, the focal length of three hot spots is different, and then cause in the image collected that the image pitch of three can not be the most corresponding with actual pitch, and then cause the material position information inaccuracy that subsequent arithmetic processor calculation process obtains.And the first reference tilt light hot spot A, the first reference directional light hot spot B and second in present embodiment is not only located on same straight line with reference to directional light hot spot C, and it is positioned at the same controlling level of material to be measured, as shown in Figure 8, it is to ensure that the height of three's range image acquisition component is identical in this case, and then focal length is identical when gathering image, the image collected will not distortion, it is possible to the relatively accurately actual positional relationship between reflection three.

In addition, formula and other technical characteristic owing to calculating HA in present embodiment are identical with embodiment 8, so not repeating.

Embodiment 10:

Present embodiment is also a specific embodiment of embodiment 7, and the present embodiment comprises the steps of

As it is shown in figure 9, the reference tilt light hot spot A that definition is located along the same line is that the first reference tilt light hot spot, two references directional light hot spot (B and C) respectively first are with reference to directional light hot spot and the second reference directional light hot spot；Wherein S1, S2 and S3 are respectively the light source of the first reference tilt light hot spot A, the light source of the first reference directional light hot spot B and second light source with reference to directional light hot spot B；

When the material position of S2: the material to be measured that prestores arrives preset height h, first with reference to image pitch D2 between image pitch D1 between the light S3C of light S2B and the second reference directional light hot spot C of directional light hot spot B, the first reference tilt light hot spot A and first reference directional light hot spot B；

S4: above-mentioned image is carried out calculation process, obtain first with reference to directional light hot spot B and second with reference to the image pitch between directional light hot spot C be D1 ', the first reference tilt light hot spot A and first be D2 ' with reference to the image pitch between directional light hot spot B；

S5, if at a time, D1 '/D2 ' is equal to or more than D1/D2, then calculation process logical judgment goes out the material position arrival h of material the most to be measured.

S6: the consequential signal of above-mentioned logical judgment is exported.

Embodiment 11:

Present embodiment is the further improvement of embodiment 10, mainly the improvement is that, in embodiment 10, first reference tilt light hot spot A, first is only located along the same line with reference to directional light hot spot C with reference to directional light hot spot B and second, this straight line is probably the straight line that the incline direction along material surface to be measured goes down, now A, B and C 3 is located at different controlling levels, such as Fig. 9, when gathering the image of three the most from top to bottom, when being easy to cause gathering image because the position of three hot spot range image acquisition component is different, the focal length of three hot spots is different, and then cause in the image collected that the image pitch of three can not be the most corresponding with actual pitch, and then D1 '/D2 ' and the D1/D2 causing subsequent arithmetic processor calculation process to obtain can not be the most corresponding.And the first reference tilt light hot spot A, the first reference directional light hot spot B and second in present embodiment is not only located on same straight line with reference to directional light hot spot C, and it is positioned at the same controlling level of material to be measured, as shown in Figure 10, it is to ensure that the height of three's range image acquisition component is identical in this case, and then focal length is identical when gathering image, the image collected will not distortion, it is possible to the relatively accurately actual positional relationship between reflection three.

In addition, present embodiment is identical with embodiment 10, so not repeating.

Embodiment 12:

S1, being perpendicular to the directional light of a certain cross section of material to be measured and at least two bundles and the oblique light that each directional light is default angle to material surface to be measured projection at least two bundle, each directional light and each oblique light are correspondingly formed directional light hot spot and oblique light hot spot after being irradiated to material surface to be measured；Select wherein to be positioned at same straight line and at least two directional light hot spot that the incline direction along the same inclined surface of material to be measured is arranged in order and at least two oblique light hot spot are as with reference to directional light hot spot and reference tilt light hot spot；

As shown in figure 11, definition be positioned at same straight line and the incline direction along the same inclined surface of material to be measured is arranged in order two be arranged in order with reference to directional light hot spot D, two reference tilt light hot spot the respectively first reference tilt light hot spot A and the second reference tilt light hot spot B(now tetra-hot spots of C, A, D and B with reference to directional light hot spot C and second with reference to directional light hot spots respectively first)；Wherein S1, S2, S3 and S4 are respectively the light source of the first reference tilt light hot spot A, the light source of the second reference tilt light hot spot B, the light source of the first reference directional light hot spot C and second light source with reference to directional light hot spot D；

S2: prestore first with reference to actual pitch D1 between the light S4D of light S3C and the second reference directional light hot spot D of directional light hot spot C, the light source S1 of the first reference tilt light hot spot A and first is with reference to actual pitch T1 between the light S3C of directional light hot spot C, the light source S2 of the second reference tilt light hot spot B and second is with reference to actual pitch T2 between the light S4D of directional light hot spot D, the light S1A of the first reference tilt light hot spot A and first is with reference to the actual angle theta 1 between the light S3C of directional light hot spot C, the light S2B of the second reference tilt light hot spot B and second is with reference to the actual angle theta 2 between the light S4D of directional light hot spot D；

S3: gather first with reference to directional light hot spot C, the second reference directional light hot spot D, the first reference tilt light hot spot A and image of the second reference tilt light hot spot B；

S4: above-mentioned image is carried out calculation process and obtains the first reference directional light hot spot C and the second reference directional light hot spot D image pitch D1 ', the first reference tilt light hot spot A on image and first reference directional light hot spot C image pitch D2 ', the second reference tilt light hot spot B and second on image with reference to directional light hot spot D image pitch D3 ' on image；

S5: i.e. calculation process can obtain the surface slope information of material to be measured by simple trigonometric function algorithm according to D1, T1, T2, θ 1, θ 2, D1 ', D2 ' and D3 '；

Assume that the inclination angle between inclined plane and the bottom surface of material to be measured is f, then

tanf=((D3′*D1/D1′-T2)/tanθ2-(D2′*D1/D1′-T1)/tanθ1)/(D3′*D1/D1′-D2′*D1/D1′)

If tetra-hot spots of A, C, D and B are arranged in order, such as Figure 12, then

tanf=((D3′*D1/D1′-T2)/tanθ2-(D2′*D1/D1′-T1)/tanθ1)/(D3′*D1/D1′+D2′*D1/D1′)

So the formula calculating tanf can be summarized as:

tanf=((D3′*D1/D1′-T2)/tanθ2-(D2′*D1/D1′-T1)/tanθ1)/(D3′*D1/D1′±D2′*D1/D1′)

That is: it is subtraction when two oblique light are positioned at the two same directions of directional light, when two oblique light are positioned at two directional light rightabouts, for addition.

Embodiment 13:

nullPresent embodiment is also a specific embodiment of embodiment 7，Also it is the further improvement of embodiment 12，In embodiment 12，First reference tilt light hot spot A、Second reference tilt light hot spot B、First is positioned at same straight line with reference to directional light hot spot C and second with reference to directional light hot spot D、On same inclined surface，Above-mentioned same straight line is down along the incline direction of the inclined surface of material to be measured，Now four hot spots just lay respectively at different controlling levels，Such as Figure 11 or 12，When gathering four light spot images on this straight line the most from top to bottom，When being easy to cause gathering image because the distance of four hot spot range image acquisition component on this straight line is different, the focal length of four hot spots is different，And then the image pitch of four hot spots caused in the image collected on this straight line can not be the most corresponding with actual pitch，And then cause can not be the most corresponding between image pitch and the actual pitch between each hot spot that subsequent arithmetic processor calculation process obtains，Cause measurement result inaccuracy.And present embodiment can obtain more accurate material table plane inclination to material surface to be measured projection at least four bundle directional light and at least two bundle oblique light by least four bundle directional lights and at least two bundle oblique light computings.Specifically, the present embodiment comprises the steps of

S1, being perpendicular to the directional light of a certain cross section of material to be measured and at least two bundles and the oblique light that each directional light is default angle to material surface to be measured projection at least four bundle, each directional light and each oblique light are correspondingly formed directional light hot spot and oblique light hot spot after being irradiated to material surface to be measured；Select at least two directional light hot spot that is wherein positioned on the same inclined surface of material to be measured, the first straight line and the first controlling level and at least one oblique light hot spot as with reference to directional light hot spot and reference tilt light hot spot, and select the other at least two directional light hot spot being positioned on above-mentioned same inclined surface, the second straight line and the second controlling level and at least one oblique light hot spot as other reference directional light hot spot and reference tilt light hot spot；

S3: gather first with reference to directional light hot spot C, the second reference directional light hot spot D, the 3rd reference directional light hot spot E, the 4th reference directional light hot spot F, the first reference tilt light hot spot A and the image of the second reference tilt light hot spot B；

S4: above-mentioned image is carried out calculation process and obtains the first reference directional light hot spot C and the second reference directional light hot spot D image pitch D1 ', the 3rd reference directional light hot spot E on image and the 4th reference directional light hot spot F image pitch D2 ', the first reference tilt light hot spot A on image and the first reference directional light hot spot C image pitch D3 ', the second reference tilt light hot spot B on image and the 3rd reference directional light hot spot E image pitch D4 ' on image；

S5: i.e. calculation process can obtain the surface slope information of material to be measured by simple trigonometric function algorithm according to D1, D2, T1, T2, θ 1, θ 2, K, Δ H, D1 ', D2 ', D3 ' and D4 '；

tanf=(|(D4′*D2/D2′-T2)/tanθ2-(D3′*D1/D1′-T1)/tanθ1|-ΔH)/K

nullVisible by above-mentioned discussion，The first reference tilt light hot spot A in present embodiment、First is not only located at same inclined surface with reference to directional light hot spot C and second with reference to directional light hot spot D、On first straight line，And it is respectively positioned on first controlling level position of the first controlling level (i.e. first straight line be positioned at) of material to be measured，Second reference tilt light hot spot B、3rd is not only located at above-mentioned same inclined surface with reference to directional light hot spot E and the 4th with reference to directional light hot spot F、On second straight line，And it is respectively positioned on second controlling level position of the second controlling level (i.e. second straight line be positioned at) of material to be measured，The height of three the hot spot range image acquisition component being to ensure that in this case on the first straight line is identical，The height of three hot spot range image acquisition component on the second straight line is the most identical，And then focal length is identical when gathering image，The image collected will not distortion，Can relatively accurately reflect the actual positional relationship between each hot spot，And then make final measurement result more accurate.

The respective embodiments described above only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations done according to this utility model spirit or modification, all should contain within protection domain of the present utility model.

Claims

1. a machine vision level-sensing device, it is characterized in that, including light emitting members, image acquisition component, arithmetic processor and signal output component, described light emitting members and described image acquisition component are arranged in the measurement space of material place to be measured, and described arithmetic processor connects described image acquisition component and described signal output component respectively；

Described light emitting members for described material surface to be measured projection at least two bundle directional lights and the most a branch of be the oblique light of default angle with each described directional light；

Described image acquisition component for gather each described directional light and each described oblique light be irradiated to described material surface to be measured after the directional light hot spot that formed and the image of oblique light hot spot, and described image is sent to described arithmetic processor；

Described arithmetic processor is for according to the image pitch in described image between the image pitch in described image and each described oblique light hot spot and each described directional light hot spot between the actual pitch between the actual pitch between each described directional light, the light source of each described oblique light and each described directional light, each described default angle, each described directional light hot spot, calculation process obtains the material position information of the material described to be measured at the facula position of each described oblique light, and described material position information signal is transferred to described signal output component；

And/or, when described arithmetic processor arrives preset height for the material position according to described material to be measured, image pitch in described image between each described directional light hot spot, image pitch in described image between each described directional light hot spot and each described inclination hot spot, and described image acquisition component Real-time Collection to image in, image pitch between each directional light hot spot, image pitch between each described directional light hot spot and each described oblique light hot spot, calculation process logical judgment goes out whether described material to be measured arrives described preset height, and the consequential signal of described logical judgment is transferred to described signal output component；

Described signal output component is for exporting the consequential signal of described material position information and/or described logical judgment.

Machine vision level-sensing device the most according to claim 1, it is characterised in that in each described directional light hot spot and each described oblique light hot spot, at least two described directional light hot spots and a described oblique light hot spot are positioned at same straight line.

Machine vision level-sensing device the most according to claim 2, it is characterised in that described in two described directional light hot spots being located along the same line and described oblique light hot spot be respectively positioned on the same controlling level of described material to be measured.

Machine vision level-sensing device the most according to claim 1, it is characterised in that

If the directional light that described light emitting members is restrainted to described material surface to be measured projection at least two and at least two bundles and each described directional light are the oblique light of default angle；

The most described arithmetic processor is according to the image pitch in described image between the image pitch in described image, each described oblique light hot spot and each described directional light hot spot between the actual pitch between the actual pitch between each described directional light, the light source of each described oblique light and each described directional light, each described default angle, each described directional light hot spot, calculation process obtains the surface slope information of described material to be measured, and described surface slope information signal is transferred to described signal output component；

Described material position information, the result of described logical judgment and/or described surface slope information signal are exported by described signal output component.

Machine vision level-sensing device the most according to claim 4, it is characterized in that, in oblique light hot spot described in directional light hot spot described at least two and at least two, oblique light hot spot described in directional light hot spot described at least two and at least two is positioned at same straight line and the incline direction along the described same inclined surface of material to be measured is arranged in order.

If described light emitting members restraints directional light and at least two bundles and the oblique light that each described directional light is default angle to described material surface to be measured projection at least four；

The most described arithmetic processor is according to the actual pitch between each described directional light, actual pitch between light source and each described directional light of each described oblique light, each described default angle, actual pitch between each plane formed between the most described directional light, difference in height between the light source of the most described oblique light, image pitch in described image and the image pitch in described image between each described oblique light hot spot and each described directional light hot spot between each described directional light hot spot, calculation process obtains the surface slope information of described material to be measured, and described surface slope information signal is transferred to described signal output component；

Machine vision level-sensing device the most according to claim 6, it is characterized in that, in oblique light hot spot described in directional light hot spot described at least four and at least two, oblique light hot spot described in directional light hot spot described at least four and at least two is respectively positioned on the described same inclined surface of material to be measured, and directional light hot spot described at least two and at least one described oblique light hot spot are positioned on the first straight line, the first controlling level, the most also directional light hot spot described at least two and at least one described oblique light hot spot are positioned on the second straight line, the second controlling level；The light of two the described directional light hot spots being positioned on described first straight line constitutes the first plane, and the light of two the described directional light hot spots being positioned on described second straight line constitutes the second plane, and described first plane is parallel with described second plane.

8., according to the machine vision level-sensing device according to any one of claim 1 ~ 7, it is characterised in that also include that parts are stablized in damping, described damping is stablized parts and is effectively contacted with described light emitting members and/or described image acquisition component.

Machine vision level-sensing device the most according to claim 8, it is characterised in that described damping stablizes parts for machinery passive type or gyroscope active control type.

10. according to the machine vision level-sensing device according to any one of claim 1 ~ 7, it is characterised in that also include that dust-proof ash disposal parts, described dust-proof ash disposal parts are positioned near described image acquisition component and/or described light emitting members and are connected with described arithmetic processor.

11. machine vision level-sensing devices according to claim 10, it is characterised in that described dust-proof ash disposal parts are gas blowing mechanism or brusher motivation structure.

12. according to the machine vision level-sensing device according to any one of claim 1 ~ 7, it is characterised in that also include that illuminace component, described illuminace component are fixed on container inside, described material place to be measured and are connected with described arithmetic processor.

13. machine vision level-sensing devices according to claim 12, it is characterised in that described illuminace component is visible illumination equipment or infrared ray non-visible light luminaire.

14. according to claim 1 ~ 7, machine vision level-sensing device according to any one of 9,11 or 13, it is characterized in that, also include the infrared or temperature-measuring part of Principles of Laser, temperature information for telemeasurement material surface, described temperature-measuring part is connected with described arithmetic processor, described temperature information is sent to described arithmetic processor by described temperature-measuring part, and described temperature information is exported by described arithmetic processor again by described signal output component.

15. according to claim 1 ~ 7, machine vision level-sensing device according to any one of 9,11 or 13, it is characterised in that described light emitting members is additionally operable to project the fill-in light being perpendicular to described directional light.

16. according to claim 1 ~ 7, machine vision level-sensing device according to any one of 9,11 or 13, it is characterized in that, described arithmetic processor is additionally operable to that described image carries out calculation process and obtains the three-dimensional image of described material to be measured, and is exported through described signal output component by described three-dimensional image.

17. according to claim 1 ~ 7, machine vision level-sensing device according to any one of 9,11 or 13, it is characterized in that, described image acquisition component is additionally operable to gather flame or burning image, and flame or burning image are sent to described arithmetic processor, described arithmetic processor is additionally operable to when receiving described flame or burning image control external alarm equipment alarm, or described flame or burning image are exported by described arithmetic processor through described signal output component.

18. according to claim 1 ~ 7, machine vision level-sensing device according to any one of 9,11 or 13, it is characterized in that, described image acquisition component is additionally operable to gather the ambient image in described measurement space, and described ambient image is sent to described arithmetic processor, described ambient image is exported by described arithmetic processor again by described signal output component.