Portable goods limit measuring instrumentTechnical field
The present invention relates to a kind of portable goods limit measuring instrument, belong to field of measuring technique.
Background technology
The widest size of vehicle each position distance the highest size of rail level and the vertical plane of track circuit center line when rail vehicles Static Gauge refers to that locomotive is static.The basic fundamental parameter that it is rolling stock design, manufacture and uses.
Mainly utilize at present contact rail vehicles Static Gauge to advise to measure the appearance profile of rail vehicles, but have that measurement links is many, cumulative errors is large, efficiency is low, may produce the shortcomings such as scuffing to vehicle body.It is the contactless automatic measurement system of rolling stock Static Gauge (the contactless automatic measurement system of rolling stock Static Gauge of main measurement means that the people such as the Guo Yin of University Of Tianjin develop with laser range sensor, " Chinese railway science ", 2013, 34th volume, 1st phase), Static Gauge measurement for rail vehicles provides one completely newly effective solution, but this metering system is fixed measurement, each measurement be a cross section of contour of the vehicle profile, the largest contours along Train motion direction cannot be recorded, simultaneously, adopt 6 laser range sensors to merge to measure, measuring process is complicated, portable type measuring cannot be realized.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, a kind of portable goods limit measuring instrument is provided, by the method for video frequency pick-up head observation railway car projection edge profile, measure height and the width dimensions of compartment lade in real time according to the locus of camera.In train stopping situation, this portable goods limit measuring instrument has function that is random to the doubtful goods realization of transfiniting of range estimation, Quick Measurement.
The present invention is made up of hand held controller, machinery mount, video frequency pick-up head three part.Video frequency pick-up head can collect goods image, and is transferred to hand held controller by the mode of wireless telecommunications.Hand held controller shows the image collected in real time.Survey crew by wireless communication mode control step motor movement, adjusts the position of video frequency pick-up head according to image information.Machinery mount is the supporting construction of portable goods limit measuring instrument.Above design proposal, such that this portable goods limit measuring instrument is easy to carry, swift to operate, precision comparatively advantages of higher.
The present invention seeks to have been come by following technical scheme:
A kind of portable goods limit measuring instrument, is characterized in that, comprises video frequency pick-up head, supports the hand held controller that the machinery mount of video frequency pick-up head and regulates video frequency pick-up head shift position;
Machinery mount comprises the vertical slide unit being vertically set on main support upper end, the horizontal slide unit that can slide along vertical slide unit, and described video frequency pick-up head can transversely move by slide unit;
The image information of collection is transferred to hand held controller and shows by described video frequency pick-up head.
Also comprise one and be arranged on auxiliary support bar towards railway carriage below main support, described auxiliary support bar end is provided with adsorbable in the magnet of railway carriage base, ensure that the stability of structure in measuring process.
The vertical rod and one that described main support comprises a drawing and pulling type structure can be erected at the base on rail.Vertical rod adopts drawing and pulling type structure, is convenient for carrying after contraction.
Described base is provided with an obliquity sensor, the obliquity information of understructure can be measured.
Video frequency pick-up head body is provided with an obliquity sensor.Obliquity sensor is for monitoring the angle of inclination of camera optical axis.
Vertical slide unit and horizontal slide unit drive lead screw transmission by a stepper motor, the position of regulating and controlling video frequency pick-up head.
Described hand held controller comprises the LCDs for showing and the operating key for control step motor driving direction.
The LCDs of described hand held controller is drawn the two reference data lines had through image center, be respectively the lateral fiducial line measuring cargo height direction and the vertical datum line measuring goods Width; When surveying cargo height, when the highest point of the boundary profile in cargo height direction aligns with lateral fiducial line, now the height of video frequency pick-up head optical axis is the height of surveyed goods; When surveying goods width, when the maximum of the boundary profile of goods Width aligns with the datum line of vertical direction, now the width value of video frequency pick-up head optical axis is the width of surveyed goods.
Between the driving controller of stepping motor of described hand held controller and two obliquity sensors, two slide units, video frequency pick-up head, carry out data transmission by wireless communication mode.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1, the present invention utilizes video frequency pick-up head to observe the method for railway car projection edge profile, and measure height and width that compartment lade is measured in camera space position in real time, scheme implementation procedure is simple;
2, video frequency pick-up head of the present invention, obliquity sensor module, adopt wireless communication mode between driving controller of stepping motor and hand held controller, avoid the loaded down with trivial details of wired connection;
3, the image of video frequency pick-up head shows by hand held controller in real time, and display interface subscript be marked with witness mark datum line and survey real-time height and the width information of goods, realize measuring object;
4, the base of physical construction of the present invention and video frequency pick-up head are all provided with high-precision tilt angle sensor assembly, the accuracy of physical construction installation process can be ensured;
5, physical construction adopts drawing and pulling type structure, and after shrinking, physical construction length is no more than 1.25m, and whole goods limit measuring instrument weight is no more than 15Kg, easy to carry.
Accompanying drawing explanation
Fig. 1 is portable goods limit measuring instrument figure.
Fig. 2 is measure field scheme of installation.
Fig. 3 is base and auxiliary support bar structural representation.
Fig. 4 is vertical slide unit and horizontal slide unit structural drawing.
Fig. 5 is hand held controller pictorial diagram.
Fig. 6 is camera optical axis place planar alignment schematic diagram during measurement cargo height.
Fig. 7 is that short transverse measurement goods boundary profile aims at schematic diagram with datum line.
Fig. 8 is that Width measurement goods boundary profile aims at schematic diagram with datum line.
Embodiment
Feature of the present invention and other correlation properties are described in further detail by example below in conjunction with accompanying drawing, so that the understanding of technician of the same trade:
As shown in Figure 1, the portable goods limit measuring instrument in the present embodiment is made up of hand held controller 1, base 2, vertical rod 3, vertically slide unit 4, horizontal slide unit 5, supplemental support 6, video frequency pick-up head 7.Wherein, base 2, vertical rod 3, vertically slide unit 4, horizontal slide unit 5, supplemental support 6 constitute mechanical support structure, for video frequency pick-up head 7 provides motion platform, the image information that video frequency pick-up head 7 gathers transfers to hand held controller 1 by wireless communication mode and shows.
As shown in Figures 2 and 3, portable goods limit measuring instrument base 2 is fixed on rail 8, the strong magnet 10 of supplemental support 6 end is adsorbed on the base in compartment 9 to be measured, for portable goods limit measuring instrument provides supplemental support, ensures the stability of test process physical construction.Base 2 is provided with on the video frequency pick-up head 7 shown in obliquity sensor 11, Fig. 4 and obliquity sensor 12 is installed equally, for ensureing the accuracy that physical construction is installed.In physical construction installation process, when the numerical value measured by two obliquity sensors 11,12 is identical, the optical axis place plane of video frequency pick-up head 7 is parallel with the reference plane that rail 8 defines.As shown in Figure 4, video frequency pick-up head 7, under the driving of vertical direction and horizontal stepper motor 13, realizes, along vertical slide unit 4, the moving of horizontal slide unit 5, namely vertically adjusting with the position of transverse direction.
As shown in Figure 5, hand held controller 1 is made up of direction controlling key 14, Dynamic System key 15, LCDs 16, hand held controller housing 17, supplying cell and master control electronic circuit board etc.Direction controlling key 14, Dynamic System key 15, LCDs 16 are arranged on hand held controller housing 17 surface, and supplying cell and master control electronic circuit board are fixed on hand held controller enclosure interior.Direction controlling key 14 can the direction of motion of control step motor 13, drives video frequency pick-up head 7 to move; Dynamic System key 15 is opened for control system power supply, power supply closes, the function such as storage, data readback of measurement data; LCDs 16 adopts highlighted liquid crystal display, realizes sunlight hypograph high-visible.
In the present embodiment, the base 2 of physical construction, vertical rod 3 are the special-purpose sections adopting titanium alloy material mold to draw, and after ensure that structural strength can resist the wind speed of 4m/s, alleviate the weight of structure to greatest extent; Vertical rod pull coordinates vertical slide unit, and the measurement range of short transverse can be made for distance rail level 3.1m ~ 5.1m, and the measurement range of Width is apart from each 1.6m ~ 1.8m in track circuit center line both sides; The motion guide rail of vertical slide unit 4, horizontal slide unit 5 all adopts tripartite system, ensures the balance of slide block in motion process; Video frequency pick-up head 7 adopts 2,000,000 pixel image sensors, and minimal illumination can reach 0.005Lux, meets daytime, night without the imaging under secondary light source condition, realizes all weather operations; The stepper motor of vertical slide unit 4 adopts 42 stepper motors, and the stepper motor of horizontal slide unit 5 adopts 20 stepper motors, alleviates the weight of instrument to greatest extent;
The present embodiment in the specific implementation, adopts lithium battery power supply.Lithium battery has that capacity is large, memory-less effect, cost performance high, therefore, selects lithium battery in this example, and is equipped with 2 pieces of lithium batteries and makees reserve battery.The lithium battery that supplying cell in hand held controller 1 is equipped with is 8Ah12V, is placed in hand held controller housing 17, for hand held controller 1 is powered; Stepper motor 13, video frequency pick-up head 7, obliquity sensor 11, lithium battery needed for obliquity sensor 12 are 5Ah12V, and being placed in vertical rod 3 internal cavities, is that each electronic module is powered by wire.The stream time in actual use of portable goods limit measuring instrument can reach more than 6 hours.
As shown in Figure 6, video frequency pick-up head 7 can move up and down, adjustment height.To measure cargo height, with the optical axis place plane of video image for witness mark benchmark, by the direction controlling key 14 on hand held controller 1, adjustment video frequency pick-up head 7 height, as shown in Figure 7, when the altitude datum line a in video frequency pick-up head imaging what comes into a driver's overlaps with the peak of goods edge profile, video camera grease head highness be now compartment the maximum height of thing of freighting.Record the real-time height of video frequency pick-up head, the height of goods can be obtained.The measuring principle of Width and the measuring principle of short transverse similar, as shown in Figure 8, when the width datum line b in video frequency pick-up head imaging what comes into a driver's overlaps with the widest part of goods edge profile, the width of camera be now compartment the breadth extreme of thing of freighting.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.