CN201622065U - Automatic dynamic overall dimension measuring device for vehicles - Google Patents

Abstract

The utility model belongs to the measurement technical field, and particularly relates to an automatic dynamic overall dimension measuring device for vehicles. The measuring device comprises a ranging sensor set, a signal processing module, a computer data acquisition system and a computer software processing module, wherein the ranging sensor set comprises a height measuring sensor, a width measuring sensor and a length measuring sensor; the length measuring sensor comprises an infrared curtain sensor and gleam infrared positioning switches; and the transmitting terminals and the receiving terminals of the gleam infrared positioning switches are mounted relatively and equidistantly arranged on two sides of a laneto be detected. By virtue of the gleam infrared positioning switches, not only is the security guaranteed, but also a larger fan-shaped mirror side can be formed with the help of the combination of transmitting and receiving infrared light gleam, so that the blind zone of the maximum long edges at the tail parts of different vehicles can not be completely covered by laser beam transmitted by a laser positioning switch is substantially avoided.

Description

The dynamic auto measurement mechanism of a kind of vehicle contour dimension

Technical field

The utility model relates to and belongs to field of measuring technique, relates in particular to a kind of public security vehicle administrative institute, vehicle inspection station and the vehicle on highway used vehicle contour dimension measuring equipments of department such as measuring station that transfinite.

Background technology

Current, part car owner carries out various repackings for reaching overload transportation purpose to vehicle, as vehicle is added steel plate, adds cart Car size etc.Overload of vehicle transfinites to become and has a strong impact on the country and people's security of the lives and property, jeopardizes a stable outstanding problem of social economic order.According to standard GB 1589-2004 " road vehicle contour dimension, axle load and quality limit value ", GB 7258-2004 " motor vehicle security of operation technical conditions ", GB 21861-2008 " motor vehicle safety technique Interventions Requested and method ", in order to check on from the source, each public security vehicle administrative institute, motor vehicle inspection station must carry out compulsory test to the new registration vehicle that transfinites with in the contour dimension with motor vehicles; Highway department also needs the various vehicle contour dimensions that transfinite are detected in administering the administrative law enforcement of transfiniting.At present, the detection of vehicle contour dimension is still prolonged basically with past manual measurement mode, there is not intelligentized measurement method preferably, because manual measurement uncertain and waste time and energy dangerous, press for a kind of surveying instrument motor vehicle contour dimension is measured automatically, to reduce the interference of surveying work intensity and human factor.

The patent of publishing " vehicle gabarit automatic measurement system ", patent No. 20061003866.X, a kind of vehicle gabarit automatic measurement system is disclosed, the technical characterictic of this system be to utilize " PC is controlled the image that digital camera obtains the positive and side of vehicle respectively; the automatic then profile that identifies vehicle from image; obtain length, width and the height dimension of vehicle by the computing method of Nonlinear Mapping, and the result is shown by output device; Before the detection, must carry out image calibration." though this technical scheme can realize the measurement of vehicle contour dimension, has following problem:

1, can only static measurement vehicle contour dimension.In real work, for increasing work efficiency, motor vehicle inspection station often needs kinetic measurement vehicle contour dimension, and obviously static measurement vehicle contour dimension is not suitable for the various vehicle inspection stations of requirement fast detecting.

2, the measurement of lengthening vehicle is had any problem.In the vehicle product of present national regulation, vehicle length is the longest to reach 20 meters, obviously adopts ccd video camera that the vehicle measurement of 20 meters length is had certain degree of difficulty.

3, vehicle gate height is measured not clearly statement.In measuring vehicle contour dimension, vehicle gate height is essential items for inspection, if vehicle gate height is not detected, the detection data of vehicle contour dimension are incomplete.

In addition, because this technical scheme is to control the image that digital camera obtains vehicle front and side respectively by PC, automatically from image, identify the profile of vehicle then, obtain length, width and the height dimension of vehicle by the computing method of Nonlinear Mapping.Therefore, the distance of side camera position and front camera position and tested vehicle directly has influence on the accuracy of test data.

Just because of above-mentioned defective, the patent name of publishing is: the dynamic auto measurement mechanism of motor vehicle contour dimension, the patent No. is: ZL200720184559.X, the dynamic auto measurement mechanism of a kind of exciting car contour dimension is disclosed, it has overcome above-mentioned defective, but when motor vehicle enters measured zone, because the maximum length marginal position difference of different vehicle afterbody, use laser positioning switch emitted laser bundle can't cover the maximum length marginal position of different vehicle afterbody fully, still have certain blind area.In addition, laser positioning switch emitted power has milliwatt more than 50, and the no act.std of country can be looked at present, compares with international standard to exceed standard 1 times, has certain potential safety hazard.

Summary of the invention

In order to solve the technical matters of above-mentioned existence, the purpose of this utility model provides a kind of accurately measuring machine motor-car length and has the dynamic auto measurement mechanism of vehicle contour dimension that human body is not had influence.

In order to realize above-mentioned purpose, the utility model has adopted following technical scheme: the dynamic auto measurement mechanism of a kind of vehicle contour dimension, this device comprises distance measuring sensor group, signal processing module, computer data acquisition system, computer software processing module, and described distance measuring sensor group comprises height survey sensor, width measure sensor and length measuring sensor; Height survey sensor, width measure sensor and length measuring sensor are respectively by being connected with its information corresponding processing module, computer data acquisition system, described measurement linear transducer comprises infrared light curtain sensor and the infrared positioning switch of a line, the transmitting terminal of the infrared positioning switch of one line is relative with receiving end to be installed, and detects the both sides, track by equidistantly being placed in.

As preferably, the every group one above-mentioned infrared positioning switch of line comprises an infrared emission end of mutual correspondence and the receiving end that a plurality of infrared tube is formed array, the infrared emission end of every group one line infrared switch is installed in a side that detects the track, and the receiving end of the linear array that a plurality of infrared tubes are formed is perpendicular to the other end of floor mounted in the detection track; The transmitting terminal and the receiving end of the infrared positioning switch of many group one lines are placed by equidistant, equidistant arrangement respectively, and are an angle of 90 degrees with vehicle heading.

As preferably, the transmitting terminal and the receiving end of the many groups one above-mentioned infrared positioning switches of line are placed into differing heights respectively, and the spacing of adjacent two group of one infrared positioning switch of line is less than or equal to the measurement length range of infrared light curtain.

The utility model adopts the infrared positioning switch of a line, when guaranteeing security, utilize line infrared light emission and receive combination, the characteristics of big sectored light face can be formed, the blind area of using laser positioning switch emitted laser Shu Buneng to cover the maximum length marginal position of different vehicle afterbody fully and existing can be solved basically.

Description of drawings

Fig. 1 is the structured flowchart of measuring system of the present utility model.

Fig. 2 is a vehicle linear measure longimetry schematic diagram of the present utility model.

Fig. 3 is that 2 laser scanning systems of the present utility model are to height of car, width, gate height measurement principle figure.

Fig. 4 is vehicle contour dimension testing process figure of the present utility model.

Fig. 5 is an infrared light curtain sensor circuit schematic diagram of the present utility model.

Fig. 6 is line infrared light positioning switch group circuit theory diagrams of the present utility model.

Embodiment

Below in conjunction with accompanying drawing 1-6 embodiment of the present utility model is made a detailed explanation.

The dynamic auto measuring system of vehicle contour dimension as shown in Figure 1 comprises distance measuring sensor group 1, signal processing module 2, computer data acquisition system 3, computer software processing module 4.Distance measuring sensor group 1 comprises height survey sensor, width measure sensor and length measuring sensor.Height survey sensor, width measure sensor and length measuring sensor are respectively by being connected with its corresponding signal processing module 2, computer data acquisition system 3.Thesoftware processing module 4 that computer data acquisition system 3 connects on the computing machine.Length measuring sensor adopts infraredlight curtain sensor 5 and the infrared positioning switch 7 of many group one lines.The width measure sensor can adopt laser scanning system 8.The height survey sensor can adopt laser scanning system 8 or infraredlight curtain sensor 5.

1, organizes the infrared positioning switch 7 of a line, infraredlight curtain sensor 5 survey vehicles 6 length more

(1) as shown in Figure 2, infraredlight curtain sensor 5 is made up of infrared transmitting tube and receiving tube and is lined up several linear arrays respectively, lies in a horizontal plane in to detect the left and right sides, track, and the linear array direction is parallel with vehicle heading.The infrared transmitting tube of each linear array or the tube pitch of receiving tube are 0.5-2cm.As shown in Figure 5, transmitting and receiving by single-chip microcomputer of infraredlight curtain sensor 5 controlled, single-chip microcomputer is built-in with timesharing scanning electron control system, at any time the section, the emission of infraredlight curtain sensor 5 and reception have only a pair of connection, this method of sampling can make measured value accurately navigate to 10mm, even littler.

As shown in Figure 2, organize the transmitting terminal of the infrared positioning switch 7 of a line and receiving end more and be placed in the left and right sides of detecting the track respectively and place, and be an angle of 90 degrees with vehicle 6 travel directions by equidistant, equidistant arrangement.Consider the different maximum length marginal positions of different vehicle 6, the transmitting terminal of the infrared positioning switch 7 of a line is placed into different height respectively with receiving end, and infrared positioning switch 7 spacings of adjacent two group of one line are less than the measurement length range of infrared light curtain sensor 5.Here without limits to the length of measuring vehicle 6, the measurement range that extends if desired, the quantity that only needs to increase by 7 groups of the infrared positioning switches of a line gets final product.The length of vehicle 6 can satisfy the requirement of the countries concerned's standards to not influence of measuring accuracy.

Vehicle 6 is in the process of advancing, the headstock partial occlusion is lived infraredlight curtain sensor 5, when the tailstock enters the measurement length range of the infrared positioning switch group 7 of a line simultaneously, computer calculates by headstock shield portions infraredlight curtain sensor 5 power valves and the paired quantity of receiving tube, multiply by the spacing of infrared tube, add distance between infrared positioning switch 7 of a line that certain group is blocked by the tailstock and the infraredlight curtain sensor 5, finally calculate the length value of vehicle 6.In addition, infraredlight curtain sensor 5 also has the function of judging vehicle 6 travel directions.

Adopt infraredlight curtain sensor 5 and the infrared positioning switch 7 of many group one lines to add that the logical operation of software is achieved measuring vehicle 6 length, this kind method is measured not only precision height of vehicle commander, and has saved hardware cost to greatest extent.

2, the composite measurement of laser scanning system 8 pairs of vehicle 6 width, height and gate height

Adopt laser scanning system 8 realize vehicle 6 width, highly, the composite measurement of gate height.Laser scanning system 8 is installed in the top 4-6 rice height (as shown in Figure 3) overhead that detects the left and right sides, track, and scanning angle 9 is the 60-100 degree.In vehicle 6 advanced process, 2 laser scanning systems 8 were controlled by computing machine.The width of 8 pairs of vehicles 6 of laser scanning system, highly, the high degree in container hurdle carries out two-dimentional kinetic measurement.Vehicle 6 gabarits that laser scanning system 8 at first successively scans are to the relative distance of laser scanning system 8, by computer software calculate the width of vehicle 6 two dimensions, highly, the instantaneous dimensional data of gate height, adopt the timesharing method for scanning again, obtain width, height and the gate height value of each cutting branch aspect when vehicle 6 moved, combination is to vehicle 6 measurement of lengths simultaneously, by software processing, simulation and output vehicle 6 gabarit three-dimensional picture and dimensional datas.

The measurement of high-resolution laser scanning system 8 pairs of vehicle 6 width, height and gate height, this kind method is by the dynamic image treatment technology, depict the contour images on vehicle 6 surfaces, carry out data processing again, remove the influence of the factor such as Position indication lamp, rearview mirror of vehicle 6 to greatest extent, draw vehicle 6 real width, height and gate height dimension value.

3, measuring method

The infrared positioning switch 7 of many group one lines, infraredlight curtain sensor 5 and laser scanning system 8 survey vehicles 6 length, width, highly, gate high integrity data

As shown in Figure 4, by PC computer control and management whole measuring system.When measuring beginning, the sensor selftest module is started working, after various sensors inspections are errorless, software sends sense command to vehicle 6, the infrared positioning switch 7 of many group one lines judges whether vehicle 6 enters measurement range (as shown in Figure 2, the infrared positioning switch 7 of many group one lines can be judged the direct of travel of vehicle 6 by software), if enter, then the infrared positioning switch 7 of startup many groups one lines, laser scanning system 8 are started working the dynamic real time data of collection vehicle 6 lengths and gate height.When if vehicle 6 heads enter the measurement length range of infraredlight curtain sensor 5, determine vehicle 6 head in-positions by the many groups one infrared positioning switches 7 of line, vehicle 6 is measured length work and is finished; If vehicle 6 afterbodys cross laser scanning system 8, then surveying work finishes.By computer data acquisition system the data that collect are sent to PC by 100,000,000 netting twines, again by sampled signal control module, sampled images filtering module, image modification module, 3-D view analog module, database storing module, data disaply moudle, finally draw the gabarit 3-D view of vehicle 6 and length, width, highly, gate high integrity data, simultaneously the data of measuring are deposited in the database.When detecting some special car 6, as the cement tub tank car etc., have partly that the profile geometric figure is circular shape, the 3-D view simulation softward can call in system, on computer screen, vehicle 6 profile three-dimensional picture, front, side, vertical view is revised.

Claims (3)

1. dynamic auto measurement mechanism of vehicle contour dimension, this device comprises distance measuring sensor group (1), signal processing module (2), computer data acquisition system (3), computer software processing module (4), and described distance measuring sensor group (1) comprises height survey sensor, width measure sensor and length measuring sensor; Height survey sensor, width measure sensor and length measuring sensor are respectively by being connected with its information corresponding processing module (2), computer data acquisition system (3), described length measuring sensor comprises infrared light curtain sensor (5), it is characterized in that, described length measuring sensor also comprises the infrared positioning switch of a line (7), the transmitting terminal of the infrared positioning switch of one line (7) is relative with receiving end to be installed, and detects the both sides, track by equidistantly being placed in.

2. the dynamic auto measurement mechanism of a kind of vehicle contour dimension according to claim 1, it is characterized in that, the described every group one infrared positioning switch of line (7) comprises an infrared emission end of mutual correspondence and the receiving end that a plurality of infrared tube is formed array, the infrared emission end of every group one line infrared switch is installed in a side that detects the track, and the receiving end of the linear array that a plurality of infrared tubes are formed is perpendicular to the other end of floor mounted in the detection track; The transmitting terminal and the receiving end of the infrared positioning switch of many group one lines are placed by equidistant, equidistant arrangement respectively, and are an angle of 90 degrees with vehicle (6) travel direction.

3. to require the dynamic auto measurement mechanism of 2 described a kind of vehicle contour dimensions according to right, it is characterized in that, the transmitting terminal and the receiving end of described many group infrared positioning switches of one line (7) are placed into differing heights respectively, and the spacing of adjacent two group of one infrared positioning switch of line is less than or equal to the measurement length range of infrared light curtain sensor (5).

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