Vehicle limit determination device and method

Abstract

The present invention discloses a vehicle boundary determination device and method, and relates to the technical field of vehicle boundary determination. The device comprises a main body component and a determination component, a pre-detection component and an adjustment component arranged on the main body component, wherein the determination component is used to detect the cross-sectional profile of the vehicle, the pre-detection component detects the number and distribution of dust particles in the cross-sectional profile of the vehicle, and the adjustment component vacuums and sprays dust on the cross-sectional profile of the vehicle according to the detection result of the pre-detection component, and adjusts the detection environment. The present invention collects the number and distribution of dust particles in the cross-sectional profile and the profile of the vehicle in real time and compares them with the data detected in advance. According to the comparison result, the dust particles in the cross-sectional profile of the vehicle are absorbed by the suction head and the dust particles are sprayed on the cross-sectional profile of the vehicle by the spray head, so that when the vehicle is at different speeds, the number and distribution of dust particles in its cross-sectional profile are always roughly the same as those of the control items, thereby improving the consistency of the comparison of the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle limit determination, and in particular to a vehicle limit determination device and method. Background Art

[0002] Vehicle boundary determination refers to the use of a series of measurement and analysis techniques to determine and identify the spatial scope and physical boundaries occupied by vehicles on roads, parking lots or other environments. It is often used in position recognition, dimension measurement, boundary detection, environmental perception, and data processing and display. After the high-speed rail or subway is manufactured, it is necessary to check whether the appearance is deformed and whether it meets the design requirements. Previously, a mechanical flexible door was used to tow the vehicle through. If there was any unevenness, it would collide with the door, indicating that it was unqualified. Now, laser or visual methods are used for detection to improve efficiency and accuracy. Collection and filing are all digital.

[0003] The vehicle wheel position measuring method and vehicle wheel position measuring device disclosed in patent publication number CN114450551A calculate, at each measuring position on the circumferential direction on the side surface of the tire portion of the wheel, a coordinate diagram approximate curve plotting the relationship between the position and distance of each measuring point in the direction in which the above-mentioned prescribed line extends, based on the measurement data of each measuring point on a prescribed line, calculate the rotation center position of the wheel based on specific positions on the approximate curve at at least three measuring positions, and calculate the height position of the wheel relative to the vehicle body based on the calculated rotation center position of the wheel and the height position of a prescribed position of the vehicle body measured by a vehicle body position measuring device, thereby being able to easily and accurately measure the height position of the wheel relative to the vehicle body.

[0004] In the process of detecting vehicle cross-sections and contours through laser sensors, photoelectric sensors, visual sensors and other technologies, the above-mentioned and similar technical solutions require multiple scanning inspections under different vehicle speeds. Then, under the influence of the detection environment, different vehicle speeds will form different sweeping effects on dust particles in the air when passing through laser sensors, photoelectric sensors, visual sensors and other equipment. That is, when the vehicle speed is slower, the dust particle content in the swept air is less, and when the vehicle speed is faster, the dust particle content in the swept air is more. At this time, when comparing the detection results, it is also necessary to consider the impact of dust particles on the detection results, which affects the detection and comparison results. Summary of the invention

[0005] The object of the present invention is to provide a vehicle limit determination device and method to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle boundary measuring device, comprising a main body component and a measuring component, a pre-detection component and an adjustment component arranged on the main body component, the measuring component is used to detect the cross-sectional profile of the vehicle, the pre-detection component detects the number and distribution of dust particles in the cross-sectional profile of the vehicle, and the adjustment component vacuums and sprays dust on the cross-sectional profile of the vehicle according to the detection result of the pre-detection component to adjust the detection environment, the main body component comprises a bracket and a support plate, the bracket is fixedly connected to the support plate, the pre-detection component and the measuring component respectively comprise a first detector and a second detector, a plurality of bearing plates are arranged on the bracket, the first detector and the second detector are respectively fixed on both sides of the bearing plate, and one end of the bearing plate is respectively fixedly connected with a first control terminal and a second control terminal electrically connected to the first detector and the second detector;

[0007] The adjustment component includes a suction head and a spray head, which are respectively fixed on both sides of the carrying plate, and an absorption pump and a spray pump which are in communication with the suction head and the spray head are respectively fixedly connected to the carrying plate, and an absorption pipe and a spray pipe are respectively connected between the absorption pump and the spray pump and the suction head and the spray head, the absorption pump absorbs dust particles through the suction head, and the spray pump sprays dust particles through the spray head;

[0008] When the vehicle is measured at different speeds, the pre-detection component collects the number and distribution of dust particles in the cross-sectional profile of the vehicle in real time, and the cross-sectional profile of the vehicle is vacuumed or sprayed by the adjustment component to improve the consistency of the comparison of the detection results. There are multiple measuring components, pre-detection components and adjustment components, which can measure, vacuum or spray dust at any angle in all directions on the vehicle being measured.

[0009] Furthermore, the bracket is provided with a plurality of lifting components for adjusting the height of the measuring component, the pre-detection component and the adjustment component, the lifting component includes a threaded rod, and a plurality of lifting slots are opened on the bracket. The threaded rods are rotatably connected between the top and the bottom inner wall of the lifting slots, and the bottom outer walls of the lifting slots are fixedly connected with lifting motors. The threaded rods are respectively connected to the lifting motors, and the supporting plates are respectively connected to the outer walls of the threaded rods through threads. When the lifting motor is started, the threaded rods are driven to rotate, and at the same time the supporting plates are driven to rise and fall, thereby adjusting the height of the measuring component, the pre-detection component and the adjustment component.

[0010] Furthermore, a limit assembly for limiting the position of the load-bearing plate is provided on the load-bearing plate, and the limit assembly includes a plurality of clamping plates, which are respectively fixed on the load-bearing plates, and a plurality of limit grooves are opened on the outer walls on both sides of the bracket, and the clamping plates are fixedly connected with limit blocks adapted to the limit grooves. When the load-bearing plate is lifted or lowered, the limit blocks slide up and down in the limit grooves to enhance the stability of the load-bearing plate.

[0011] Furthermore, the carrier plate is provided with a driving assembly for adjusting the angles of the suction head and the nozzle, the driving assembly includes multiple driving motors, multiple fixed plates are fixed on the carrier plate, a rotating shaft is rotatably connected between the fixed plates, the suction head and the nozzle are respectively fixed on the rotating shaft, the driving motors are respectively fixed on one side of the fixed plates, and the rotating shaft is connected to the driving motor.

[0012] Furthermore, the carrying plates are fixedly connected with material storage tanks, and the absorption pump and the spraying pump are both in communication with the material storage tanks.

[0013] Furthermore, a metering valve is fixed on the outer wall of the spraying pipe, the metering valve is electrically connected to the first control terminal and the second control terminal, and the metering valve is used to obtain the dust particle concentration in the air passing through the spraying pipe.

[0014] Furthermore, the first detector is a high-resolution camera and the second detector is a laser sensor.

[0015] Furthermore, a vehicle limit determination method, using the above-mentioned vehicle limit determination device, comprises:

[0016] Initial state acquisition: the first detector acquires the number and distribution data of dust particles in the cross-sectional profile of the target vehicle when the target vehicle passes through the first detector for the first time, and obtains a reference item. Based on the reference item, the second detector measures the cross-sectional profile of the vehicle to obtain the first measurement data of the vehicle, and then obtains the first measurement data item. The heights of the first detector and the second detector can be adjusted by the first adjustment method, and used for target vehicles of different specifications.

[0017] State difference acquisition, setting a detection number threshold, obtaining a detection number item, performing a secondary detection on the vehicle based on the detection number item, and again obtaining the number and distribution data of dust particles in the cross-sectional profile of the vehicle by the first detector to obtain a real-time item, and obtaining a particle difference item based on the difference between the control item and the real-time item;

[0018] Determine environmental adjustment, judge the particle difference item based on the judgment method, and adjust the state of the vehicle cross-sectional profile through the spray pump and the absorption pump to obtain the environmental adjustment item, and adjust the angles of the spray pump and the absorption pump through the second adjustment method;

[0019] Acquiring the measurement result, based on the environmental adjustment item, the second detector measures the cross-sectional profile of the vehicle again to obtain secondary measurement data of the vehicle, and obtains the secondary measurement data item;

[0020] The measurement results are compared, based on the first measurement data item and the second measurement data item, to obtain comparative data of the cross-sectional profile of the target vehicle. Since the measurement environment when obtaining the second measurement data item is adjusted to be the same as the measurement environment of the first measurement data item, the comparative data is more consistent.

[0021] Furthermore, the number of detection times is at least two, and the speed of each detection is different, so at least two particle difference items are obtained, and at least two secondary measurement data items are obtained based on the particle difference items.

[0022] Furthermore, the judgment method includes: when the control item is greater than the real-time item, the particle difference item is a positive number, the spray pump is started, and dust particles are sprayed on the cross-sectional contour of the vehicle through the nozzle; conversely, when the control item is less than the real-time item, the particle difference item is a negative number, the absorption pump is started, and dust particles on the cross-sectional contour of the vehicle are absorbed through the suction head.

[0023] Furthermore, the first adjustment method includes:

[0024] Z1: Working range acquisition, obtaining the working ranges of the first detector and the second detector, and obtaining multiple working height items;

[0025] Z2: Target range acquisition, obtain the overall height range of the target vehicle and obtain the target height item;

[0026] Z3: Height combination, based on the combination results of multiple working height items, obtain the working combination item, and adjust the combination method of the working combination item so that the working combination item meets the target height item.

[0027] Furthermore, the second adjustment method includes: obtaining the angle range of the spray pump and the absorption pump, obtaining the working angle item, setting the particle threshold, and based on the particle difference item, when the particle difference item exceeds the particle threshold, setting the position of the particle difference item exceeding the particle threshold as the target position, judging whether the working angle item covers the target position, and adjusting the angles of the spray pump and the absorption pump until the working angle item can cover the target position.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The vehicle boundary determination device and method detect the number and distribution of dust particles in the cross section and contour of the vehicle in advance. When the vehicle is detected at different speeds, the number and distribution of dust particles in the cross section and contour of the vehicle are collected in real time and compared with the data detected in advance. According to the comparison result, the dust particles in the cross section contour of the vehicle are absorbed by a suction head and the dust particles are sprayed on the cross section contour of the vehicle by a nozzle, and the detection environment at different vehicle speeds is adjusted, so that the number and distribution of dust particles in the cross section and contour of the vehicle at different speeds are always roughly the same as those of the control items, thereby improving the consistency of the comparison of the detection results.

[0030] At the same time, when measuring vehicles of different specifications, since the working range of the first detector, the second detector, the suction head and the nozzle is limited, when the heights of the vehicles are different, or when a more detailed measurement of a certain part of the vehicle is required, the multi-lifting motor can be used for control to adjust the height of the carrier plate and the working range of the first detector, the second detector, the suction head and the nozzle can be adjusted, so that the equipment has a wider adaptability and can enable multiple suction heads or nozzles to work together to create a detection environment at a faster speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the support plate and bracket structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the pre-detection component and the determination component of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the regulating component of the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0038] Figure 8 It is a schematic diagram of the overall process of initial state acquisition, state difference acquisition and detection environment adjustment of the present invention;

[0039] Fig. 9 This is a schematic diagram showing that the control item of the present invention is smaller than the real-time item;

[0040] Fig.10This is a schematic diagram of the control item being greater than the real-time item of the present invention;

[0041] Fig.11 It is a schematic diagram of the relationship between the working height item and the target height item of the present invention.

[0042] In the figure: 1. main component; 101. bracket; 102. support plate; 2. pre-detection component; 201. load-bearing plate; 202. first detector; 203. first control terminal; 3. lifting component; 301. lifting slot; 302. threaded rod; 303. lifting motor; 4. adjustment component; 401. absorption pump; 402. suction head; 403. fixing plate; 404. nozzle; 405. spray pump; 406. metering valve; 407. storage tank; 5. limit component; 501. limit slot; 502. card plate; 503. limit block; 6. measurement component; 601. second detector; 602. second control terminal; 7. drive component; 701. drive motor; 702. rotating shaft. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] When a vehicle travels at different speeds, it will generate different wind pressures and form different sweeping effects on the dust particles in the air. In this case, when the cross-section and contour of the vehicle are detected by the measuring equipment, large errors will occur. This situation is more likely to occur in areas with a lot of dust. The technical solution provided by the present application is to set up a measuring component and a pre-detection component, wherein the measuring component is used to detect the cross-section and contour of the vehicle, and the pre-detection component is composed of multiple high-resolution cameras, which are used to detect the number and distribution of dust particles in the cross-section and contour of the vehicle in advance, and save the detection results to form a control item. An adjusting component is arranged between the detection component and the pre-detection component, the adjusting component is composed of a plurality of nozzles and suction heads, the nozzles and suction heads are respectively controlled by an independent spraying pump and an absorption pump. When the vehicle is detected at different speeds, the pre-detection component collects the number and distribution of dust particles in the cross section and profile of the vehicle in real time to obtain a real-time item. According to the comparison result between the real-time item and the control item, the cross section and profile of the vehicle are dusted or sprayed by the adjusting component, so that when the vehicle is at different speeds, the number and distribution of dust particles in its cross-sectional profile are always roughly the same as those of the control item, thereby improving the consistency of the comparison of the detection results.

[0045] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the present invention provides a technical solution: a vehicle boundary measuring device, comprising a main component 1 and a measuring component 6, a pre-detection component 2 and an adjustment component 4 arranged on the main component 1, the measuring component 6 is used to detect the cross-sectional profile of the vehicle, the pre-detection component 2 detects the number and distribution of dust particles in the cross-sectional profile of the vehicle, and the adjustment component 4 vacuums and sprays dust on the cross-sectional profile of the vehicle according to the detection result of the pre-detection component 2, and adjusts the detection environment, the main component 1 comprises a bracket 101 and a support plate 102, the bracket 101 is fixedly connected to the support plate 102, the pre-detection component 2 and the measuring component 6 respectively include a first detector 202 and a second detector 601, a plurality of supporting plates 201 are arranged on the bracket 101, the first detector 202 and the second detector 601 are respectively fixed on both sides of the supporting plate 201, and one end of the supporting plate 201 is respectively fixedly connected with a first control terminal 20 electrically connected to the first detector 202 and the second detector 601 3 and a second control terminal 602; the adjustment component 4 includes a suction head 402 and a nozzle 404, the suction head 402 and the nozzle 404 are respectively fixed on both sides of the carrier plate 201, and the carrier plate 201 is respectively fixedly connected with an absorption pump 401 and a spraying pump 405 which are in communication with the suction head 402 and the nozzle 404, and an absorption pipe and a spraying pipe are respectively connected between the absorption pump 401 and the spraying pump 405 and the suction head 402 and the nozzle 404, the absorption pump 401 absorbs dust particles through the suction head 402, and the spraying pump 405 sprays dust particles through the nozzle 404; when the vehicle is measured at different speeds, the number and distribution of dust particles in the cross-sectional profile of the vehicle are collected in real time by the pre-detection component 2, and the cross-sectional profile of the vehicle is dusted or sprayed by the adjustment component 4 to improve the consistency of the comparison of the detection results, and the number of the measurement component 6, the pre-detection component 2 and the adjustment component 4 are multiple, and the vehicle to be measured can be measured, dusted or sprayed at any angle in all directions.

[0046] like Figure 3 As shown, the bracket 101 is provided with a plurality of lifting components 3 for adjusting the height of the measuring component 6, the pre-detection component 2 and the adjustment component 4, the lifting component 3 includes a threaded rod 302, and the bracket 101 is provided with a plurality of lifting slots 301, the threaded rods 302 are all rotatably connected between the top and the bottom inner wall of the lifting slots 301, the bottom outer walls of the lifting slots 301 are fixedly connected with lifting motors 303, the threaded rods 302 are respectively connected to the lifting motors 303, and the supporting plates 201 are respectively connected to the outer walls of the threaded rods 302 by threads. When the lifting motors 303 are started, the threaded rods 302 are driven to rotate, and at the same time the supporting plates 201 are driven to rise and fall, thereby adjusting the heights of the measuring component 6, the pre-detection component 2 and the adjustment component 4.

[0047] It should be noted that when measuring vehicles of different specifications, since the working range of the first detector 202, the second detector 601, the suction head 402 and the nozzle 404 is limited, when the height of the vehicle is different, or when a more detailed measurement of a certain part of the vehicle is required, the lifting motor 303 can be controlled to adjust the height of the supporting plate 201, and the working range of the first detector 202, the second detector 601, the suction head 402 and the nozzle 404 can be adjusted to make the equipment more adaptable.

[0048] like Figure 3 and Figure 5 As shown, a limiting component 5 for limiting the supporting plate 201 is provided on the supporting plate 201, and the limiting component 5 includes a plurality of clamping plates 502, and the clamping plates 502 are respectively fixed on the supporting plate 201, and a plurality of limiting grooves 501 are opened on the outer walls on both sides of the bracket 101, and limiting blocks 503 adapted to the limiting grooves 501 are fixedly connected to the clamping plates 502. When the supporting plate 201 is lifted or lowered, the limiting blocks 503 slide up and down in the limiting grooves 501 to enhance the stability of the supporting plate 201.

[0049] like Figure 6 and Figure 7 As shown, a driving assembly 7 for adjusting the angles of the suction head 402 and the nozzle 404 is provided on the supporting plate 201, and the driving assembly 7 includes a plurality of driving motors 701. A plurality of fixing plates 403 are fixed on the supporting plate 201, and a rotating shaft 702 is rotatably connected between the fixing plates 403. The suction head 402 and the nozzle 404 are respectively fixed on the rotating shaft 702, and the driving motors 701 are respectively fixed on one side of the fixing plate 403, and the rotating shaft 702 is connected to the driving motor 701.

[0050] It should be noted that when the driving motor 701 is started, it can drive different rotating shafts 702 to rotate, thereby driving the suction head 402 and the nozzle 404 fixed on the rotating shaft 702 to rotate, and adjust the directions of the suction head 402 and the nozzle 404, thereby achieving dust suction and dust spraying effects at different positions of the vehicle.

[0051] like Figure 6 As shown, a material storage tank 407 is fixedly connected to the carrier plate 201 , the absorption pump 401 and the spray pump 405 are both connected to the material storage tank 407 , and a filter valve is fixedly connected to the bottom of the material storage tank 407 .

[0052] It should be noted that the absorption pump 401 absorbs the dust particles in the cross-sectional profile of the vehicle and transports them to the storage tank 407 . When the spray pump 405 needs to spray the dust particles on the cross-sectional profile of the vehicle through the nozzle 404 , the dust particles can be extracted from the storage tank 407 .

[0053] like Figure 6As shown, a metering valve 406 is fixed to the outer wall of the spray pipe, and the metering valve 406 is electrically connected to the first control terminal 203 and the second control terminal 602. The metering valve 406 is used to obtain the dust particle concentration in the air passing through the spray pipe.

[0054] It should be noted that when the spray pump 405 sprays dust particles on the cross-sectional profile of the vehicle through the nozzle 404, the concentration of the dust particles is obtained through the metering valve 406, and spraying is performed as needed according to demand.

[0055] The first detector 202 is a high-resolution camera and the second detector 601 is a laser sensor.

[0056] It should be noted that by using a high-resolution camera to photograph the vehicle surface and then analyzing the number and distribution of particles in the image through image processing algorithms, the dust particle content and distribution of the vehicle's cross-sectional profile can be accurately obtained. The laser sensor emits a laser beam to illuminate the vehicle surface and the surrounding environment. When the laser beam encounters an object, it will be reflected back. By calculating the time from the emission to the reception of the laser pulse, the speed of light propagation can be used to accurately calculate the distance between the laser sensor and the target object, thereby obtaining the vehicle's cross-sectional profile data information.

[0057] like Figure 8As shown, a vehicle boundary determination method uses the above-mentioned vehicle boundary determination device, the initial state is obtained, the first detector 202 obtains the number and distribution data of dust particles in the cross-sectional profile of the target vehicle when it passes the first detector 202 for the first time, and obtains the reference item. Based on the reference item, the second detector 601 measures the cross-sectional profile of the vehicle to obtain the first measurement data of the vehicle, and then obtains the first measurement data item, and the height of the first detector 202 and the second detector 601 can be adjusted by a first adjustment method, and used for target vehicles of different specifications; the state difference is obtained, the detection number threshold is set, and the detection number item is obtained. The vehicle is detected for the second time based on the detection number item, and the first detector 202 again obtains the number and distribution data of dust particles in the cross-sectional profile of the vehicle to obtain the actual value. time item, a particle difference item is obtained based on the difference between the control item and the real-time item; measuring environment adjustment, the particle difference item is judged based on the judgment method, and the state of the vehicle cross-sectional profile is adjusted by the spray pump 405 and the absorption pump 401 to obtain the environment adjustment item, and the angle of the spray pump 405 and the absorption pump 401 can be adjusted by a second adjustment method; obtaining measurement results, based on the environment adjustment item, the second detector 601 measures the vehicle cross-sectional profile again to obtain secondary measurement data of the vehicle, and obtains secondary measurement data items; comparing measurement results, based on the first measurement data item and the second measurement data item, comparison data of the target vehicle cross-sectional profile is obtained. Since the measurement environment when the second measurement data item is obtained is adjusted to be the same as the measurement environment of the first measurement data item, the comparison data is more consistent.

[0058] The number of detection times is at least two, and the speed of each detection is different, so at least two particle difference items are obtained, and at least two secondary measurement data items are obtained based on the particle difference items.

[0059] like Figure 9-10 As shown, the judgment method includes: when the control item is greater than the real-time item, the particle difference item is a positive number, the spray pump 405 is started, and dust particles are sprayed on the cross-sectional contour of the vehicle through the nozzle 404; conversely, when the control item is less than the real-time item, the particle difference item is a negative number, the absorption pump 401 is started, and the dust particles on the cross-sectional contour of the vehicle are absorbed through the suction head 402.

[0060] In the specific implementation process, a target high-speed railway is subjected to boundary measurement. The target high-speed railway is obtained through a high-resolution camera for the first boundary measurement. The average number of dust particles on the body is 500. When the boundary measurement is performed for the second time, the average number of dust particles on the body is 800. At this time, when the second boundary measurement is performed, the particle difference item is negative. The absorption pump 401 is started, and the dust particles are absorbed by the vehicle cross-sectional profile through the suction head 402. When the boundary measurement is performed for the third time, the average number of dust particles on the body is 300. At this time, when the third boundary measurement is performed, the particle difference item is positive. The spray pump 405 is started, and the dust particles are sprayed on the vehicle cross-sectional profile through the nozzle 404.

[0061] like Fig.11 As shown, the first adjustment method includes: Z1: working range acquisition, acquiring the working ranges of the first detector 202 and the second detector 601, and obtaining multiple working height items; Z2: target range acquisition, acquiring the overall height range of the target vehicle, and obtaining the target height item; Z3: height combination, based on the combination results of multiple working height items, obtaining the working combination item, and adjusting the combination method of the working combination item so that the working combination item meets the target height item.

[0062] During the specific implementation process, the boundary measurement of a target high-speed railway is carried out, and the working range height of the first detector 202 and the second detector 601 is obtained to be 1.5m, while the overall height of the target vehicle is 3.5m. Due to the combined results of the working range heights of multiple first detectors 202 and the second detector 601, the first detector 202 and the second detector 601 can meet the boundary measurement of the target vehicle.

[0063] The second adjustment method includes: obtaining the angle range of the spray pump 405 and the absorption pump 401, obtaining the working angle item, setting the particle threshold, based on the particle difference item, when the particle difference item exceeds the particle threshold, setting the position of the particle difference item exceeding the particle threshold as the target position, judging whether the working angle item covers the target position, and adjusting the angles of the spray pump 405 and the absorption pump 401 until the working angle item can cover the target position.

[0064] It should be noted that the particle threshold is set at 20%. When the vehicle boundary is measured, when the number of dust particles on the vehicle body within the range of the first detector 202 and the second detector 601 exceeds the particle threshold, the vehicle body position corresponding to the range of the first detector 202 and the second detector 601 is marked as the target position, and the angles of the spray pump 405 and the absorption pump 401 are adjusted to meet the coverage of the target position.

[0065] It should be noted that when the vehicle is traveling at different speeds, the dust particles in the air will have different effects on the detection results. When the detection is performed at different speeds for multiple times, the real-time items obtained are different, which in turn leads to different particle difference items. Different particle difference items are used to adjust the number and distribution of dust particles in the cross-sectional profile of the vehicle to be measured. After creating the same detection environment, the second detector 601 is used for measurement to ensure the consistency of the detection results as much as possible.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A vehicle boundary measuring device, comprising a main body component (1), a measuring component (6), a pre-detection component (2), and an adjustment component (4) arranged on the main body component (1), wherein the measuring component (6) is used to detect the cross-sectional profile of the vehicle, the pre-detection component (2) detects the number and distribution of dust particles in the cross-sectional profile of the vehicle, and the adjustment component (4) performs dust suction and dust spraying on the cross-sectional profile of the vehicle according to the detection result of the pre-detection component (2) to adjust the detection environment, characterized in that: The main component (1) comprises a bracket (101) and a support plate (102); the bracket (101) is fixedly connected to the support plate (102); the pre-detection component (2) and the determination component (6) respectively comprise a first detector (202) and a second detector (601); a plurality of carrier plates (201) are arranged on the bracket (101); the first detector (202) and the second detector (601) are respectively fixedly connected to two sides of the carrier plate (201); one end of the carrier plate (201) is respectively fixedly connected to a first control terminal (203) and a second control terminal (602) electrically connected to the first detector (202) and the second detector (601); The adjustment component (4) comprises a suction head (402) and a spray head (404), the suction head (402) and the spray head (404) being fixed on both sides of the carrier plate (201), respectively; an absorption pump (401) and a spray pump (405) which are in communication with the suction head (402) and the spray head (404) are fixedly connected to the carrier plate (201), respectively; an absorption pipe and a spray pipe are connected between the absorption pump (401) and the spray pump (405) and the suction head (402) and the spray head (404), respectively; the absorption pump (401) absorbs dust particles through the suction head (402), and the spray pump (405) sprays dust particles through the spray head (404); When the vehicle is measured at different speeds, the pre-detection component (2) collects the number and distribution of dust particles in the cross-sectional profile of the vehicle in real time, and the cross-sectional profile of the vehicle is subjected to dust suction or dust spraying by the adjustment component (4), thereby improving the consistency of the comparison of the detection results. The number of the measurement components (6), the pre-detection components (2) and the adjustment components (4) are all multiple, and the vehicle being measured can be measured, dusted or dusted at any angle in all directions.

2. A vehicle limit determination device according to claim 1, characterized in that: The support (101) is provided with a plurality of lifting assemblies (3) for adjusting the height of the measuring assembly (6), the pre-detection assembly (2) and the adjusting assembly (4). The lifting assemblies (3) include threaded rods (302). The support (101) is provided with a plurality of lifting slots (301). The threaded rods (302) are all rotatably connected between the top and bottom inner walls of the lifting slots (301). The bottom outer walls of the lifting slots (301) are all fixedly connected with lifting motors (303). The threaded rods (302) are respectively connected to the lifting motors (303). The bearing plates (201) are respectively sleeved on the outer walls of the threaded rods (302) by threads. When the lifting motors (303) are started, the threaded rods (302) are driven to rotate and the bearing plates (201) are driven to rise and fall, thereby adjusting the heights of the measuring assembly (6), the pre-detection assembly (2) and the adjusting assembly (4).

3. A vehicle limit determination device according to claim 1, characterized in that: The bearing plate (201) is provided with a limiting assembly (5) for limiting the bearing plate (201), the limiting assembly (5) comprising a plurality of clamping plates (502), the clamping plates (502) being respectively fixed on the bearing plate (201), a plurality of limiting grooves (501) being provided on the outer walls on both sides of the bracket (101), and limiting blocks (503) adapted to the limiting grooves (501) being fixedly connected to the clamping plates (502), and when the bearing plate (201) is raised or lowered, the limiting blocks (503) slide up and down in the limiting grooves (501), thereby enhancing the stability of the bearing plate (201).

4. A vehicle limit determination device according to claim 1, characterized in that: The carrier plate (201) is provided with a driving assembly (7) for adjusting the angles of the suction head (402) and the nozzle (404), the driving assembly (7) comprising a plurality of driving motors (701), a plurality of fixing plates (403) are fixed on the carrier plate (201), a rotating shaft (702) is rotatably connected between the fixing plates (403), the suction head (402) and the nozzle (404) are respectively fixed on the rotating shaft (702), the driving motors (701) are respectively fixed on one side of the fixing plates (403), and the rotating shaft (702) is connected to the driving motor (701).

5. The vehicle limit determination device according to claim 1, characterized in that: The carrying plate (201) is fixedly connected to a material storage tank (407), and the absorption pump (401) and the spraying pump (405) are both in communication with the material storage tank (407).

6. A vehicle limit determination device according to claim 1, characterized in that: A metering valve (406) is fixed to the outer wall of the spraying pipe. The metering valve (406) is electrically connected to the first control terminal (203) and the second control terminal (602). The metering valve (406) is used to obtain the dust particle concentration in the air passing through the spraying pipe.

7. A vehicle limit determination device according to claim 1, characterized in that: The first detector (202) is a high-resolution camera, and the second detector (601) is a laser sensor.

8. A vehicle limit determination method, characterized in that: A vehicle limit determination device according to any one of claims 1 to 7 is used, comprising: Initial state acquisition, the first detector (202) acquires the number and distribution data of dust particles in the cross-sectional profile of the vehicle when the target vehicle passes through the first detector (202) for the first time, and obtains a reference item, and the second detector (601) measures the cross-sectional profile of the vehicle based on the reference item to obtain the first measurement data of the vehicle, thereby obtaining the first measurement data item, and the height of the first detector (202) and the second detector (601) can be adjusted by a first adjustment method, so as to be used for target vehicles of different specifications; Acquiring state difference, setting a detection number threshold, obtaining a detection number item, performing a secondary detection on the vehicle based on the detection number item, and again obtaining the number and distribution data of dust particles in the cross-sectional profile of the vehicle by the first detector (202) to obtain a real-time item, and obtaining a particle difference item based on the difference between the control item and the real-time item; Determine environmental adjustment, judge the particle difference item based on the judgment method, and adjust the state of the vehicle cross-sectional profile through the spray pump (405) and the absorption pump (401) to obtain the environmental adjustment item, and adjust the angle of the spray pump (405) and the absorption pump (401) through the second adjustment method; Acquiring the measurement result, based on the environmental adjustment item, the second detector (601) measures the cross-sectional profile of the vehicle again to obtain secondary measurement data of the vehicle, and obtains the secondary measurement data item; The measurement results are compared, based on the first measurement data item and the second measurement data item, to obtain comparative data of the cross-sectional profile of the target vehicle. Since the measurement environment when obtaining the second measurement data item is adjusted to be the same as the measurement environment of the first measurement data item, the comparative data is more consistent.

9. A vehicle limit determination method according to claim 8, characterized in that: The number of detection times is at least two, and the speed of each detection is different, so as to obtain at least two particle difference items, and at least two secondary measurement data items are obtained based on the particle difference items.

10. A vehicle limit determination method according to claim 8, characterized in that: The judgment method comprises: when the control item is greater than the real-time item, the particle difference item is a positive number, the spray pump (405) is started, and dust particles are sprayed on the cross-sectional profile of the vehicle through the spray head (404); conversely, when the control item is less than the real-time item, the particle difference item is a negative number, the absorption pump (401) is started, and dust particles on the cross-sectional profile of the vehicle are absorbed through the suction head (402).

11. A vehicle limit determination method according to claim 8, characterized in that: The first adjustment method includes: Z1: obtaining a working range, obtaining the working ranges of the first detector (202) and the second detector (601), and obtaining a plurality of working height items; Z2: Target range acquisition, obtain the overall height range of the target vehicle and obtain the target height item; Z3: Height combination, based on the combination results of multiple working height items, obtain the working combination item, and adjust the combination method of the working combination item so that the working combination item meets the target height item.

12. A vehicle limit determination method according to claim 8, characterized in that: The second adjustment method includes: obtaining the angle range of the spray pump (405) and the absorption pump (401), obtaining the working angle item, setting the particle threshold, and based on the particle difference item, when the particle difference item exceeds the particle threshold, setting the position of the particle difference item exceeding the particle threshold as the target position, judging whether the working angle item covers the target position, and adjusting the angles of the spray pump (405) and the absorption pump (401) until the working angle item can cover the target position.

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