Vehicle running deviation measurement method, device, equipment and medium

Abstract

A method, device, equipment, and medium for measuring vehicle deviation, belonging to the field of vehicle detection technology. The method includes: obtaining the ground clearance and irradiation distance of a laser source; when the vehicle passes a starting point, obtaining a first image of the vehicle including a first laser point; determining the ground clearance of the first laser point; and determining a first distance between a projection point of the laser source on the ground and a projection point of the first laser point on the ground based on the ground clearance of the laser source, the ground clearance of the first laser point, and the irradiation distance; when the vehicle passes a terminating point, obtaining a second image of the vehicle including a second laser point; determining the ground clearance of the second laser point; and determining a second distance between a projection point of the laser source on the ground and a projection point of the second laser point on the ground based on the ground clearance of the laser source, the ground clearance of the second laser point, and the irradiation distance; and using the difference between the first distance and the second distance as the vehicle deviation, thereby improving measurement efficiency and accuracy.

Description

Technical Field

[0001] The present application relates to the field of vehicle detection technology, and in particular to a method, device, equipment and computer-readable storage medium for measuring vehicle deviation. Background Art

[0002] Vehicle deviation is an important indicator of a vehicle's straight-line driving performance and directly affects driving safety. Accurately and efficiently measuring vehicle deviation is becoming increasingly important.

[0003] There are two related measurement methods. One is the water drop method, which involves installing a water dripping device on the vehicle. During driving, the dripping device sprays water droplets onto the ground, forming a track line. The deviation is then measured based on the track line. The other method uses specialized equipment for measurement, such as GPS-based deviation meters, laser ranging-based vehicle deviation measurement systems, image processing-based vehicle deviation detection systems, LabVIEW-based vehicle deviation testing systems, and laser binocular vision-based online automatic vehicle deviation detection systems.

[0004] However, the installation process of the dripping device in the water drop method is complicated, and manual measurement is required based on two water marks on the ground, which has relatively low efficiency and accuracy. When using special equipment or special systems for measurement, the test method is more complicated, the installation and debugging process is longer, the test efficiency is low, and there is currently no corresponding calibration method or instrument, which makes it difficult to calibrate the special equipment, which further affects the measurement accuracy. Summary of the Invention

[0005] The present application provides a vehicle running deviation measurement method, device, equipment and computer-readable storage medium, which can solve technical problems existing in the prior art such as low test accuracy and test efficiency when measuring vehicle running deviation.

[0006] In a first aspect, an embodiment of the present application provides a method for measuring a vehicle's running deviation, the method comprising:

[0007] Obtain the height above the ground and the irradiation distance of the laser source. The laser source is arranged at the starting and ending ends of the test section. The irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground.

[0008] When the vehicle passes the starting end, obtaining a first image of the vehicle captured by a camera, wherein the camera is arranged at the starting end and the ending end of the test section, and the laser source and the camera are located on the same side of the test section, wherein the first image includes a first laser spot;

[0009] Determine the height of the first laser point from the ground;

[0010] Determining a first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, where the first distance is the distance between a projection point of the laser source on the ground and a projection point of the first laser point on the ground;

[0011] When the vehicle passes the terminal end, obtaining a second image of the vehicle captured by the camera, wherein the second image includes a second laser point;

[0012] determining the height of the second laser point from the ground;

[0013] Determining a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, where the second distance is the distance between a projection point of the laser source on the ground and a projection point of the second laser point on the ground;

[0014] The difference between the first distance and the second distance is used as the vehicle deviation amount.

[0015] In conjunction with the first aspect, in one embodiment, determining the height of the first laser point above the ground includes:

[0016] Determining a first scale corresponding to the first laser point in a height measuring instrument, wherein the height measuring instrument is arranged on a side of the vehicle body close to the laser source;

[0017] The height corresponding to the first scale is used as the height of the first laser point from the ground.

[0018] In combination with the first aspect, in one embodiment, the first distance is determined based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, and the corresponding formula is:

[0019]

[0020] Wherein, B2 is the first distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H2 is the height of the first laser point from the ground.

[0021] In conjunction with the first aspect, in one embodiment, determining the height of the second laser point above the ground includes:

[0022] determining a second scale corresponding to the second laser point in a height measuring instrument, the height measuring instrument being arranged on a side of the vehicle body close to the laser source;

[0023] The height corresponding to the second scale is used as the height of the second laser point from the ground.

[0024] In combination with the first aspect, in one embodiment, the second distance is determined based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, and the corresponding formula is:

[0025]

[0026] Wherein, B3 is the second distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H3 is the height of the second laser point from the ground.

[0027] In combination with the first aspect, in one implementation, the laser source is a laser pen.

[0028] In a second aspect, an embodiment of the present application provides a vehicle running deviation measurement device, the vehicle running deviation measurement device comprising:

[0029] A first acquisition module is used to obtain the height above the ground and the irradiation distance of the laser source, where the laser source is arranged at the starting end and the ending end of the test section. The irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground;

[0030] a second acquisition module, configured to acquire a first image of the vehicle captured by a camera when the vehicle passes the starting end, the camera being arranged at the starting end and the ending end of the test section, with the laser source and the camera being located on the same side of the test section, the first image including a first laser spot;

[0031] A first determining module is used to determine the height of the first laser point from the ground;

[0032] a second determining module, configured to determine a first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, wherein the first distance is the distance between a projection point of the laser source on the ground and a projection point of the first laser point on the ground;

[0033] A third acquisition module is configured to acquire a second image of the vehicle captured by a camera when the vehicle passes the terminal, wherein the second image includes a second laser point;

[0034] A third determining module is used to determine the height of the second laser point from the ground;

[0035] a fourth determining module, configured to determine a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, where the second distance is the distance between a projection point of the laser source on the ground and a projection point of the second laser point on the ground;

[0036] The fifth determining module is configured to use the difference between the first distance and the second distance as the vehicle deviation amount.

[0037] With reference to the second aspect, in one implementation, the first determining module is specifically configured to:

[0038] Determining a first scale corresponding to the first laser point in a height measuring instrument, wherein the height measuring instrument is arranged on a side of the vehicle body close to the laser source;

[0039] The height corresponding to the first scale is used as the height of the first laser point from the ground.

[0040] In a third aspect, an embodiment of the present application provides a vehicle running deviation measurement device, the vehicle running deviation measurement device comprising a processor, a memory, and a vehicle running deviation measurement program stored in the memory and executable by the processor, wherein when the vehicle running deviation measurement program is executed by the processor, the steps of the vehicle running deviation measurement method described in any one of the first aspects are implemented.

[0041] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a vehicle deviation measurement program is stored. When the vehicle deviation measurement program is executed by a processor, the steps of the vehicle deviation measurement method as described in any one of the first aspects are implemented.

[0042] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0043] By obtaining the height above the ground and the irradiation distance of the laser source, the laser source is arranged at the starting end and the ending end of the test section, and the irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground; when the vehicle passes the starting end, a first image of the vehicle taken by a shooting device is obtained, the shooting device is arranged at the starting end and the ending end of the test section, and the laser source and the shooting device are located on the same side of the test section, and the first image contains a first laser point; the height above the ground of the first laser point is determined; further based on the height above the ground of the laser source, the height above the ground of the first laser point and the irradiation distance, a first distance is determined, and the first distance is the laser beam. The method comprises the following steps: determining the distance between the projection point of the laser source on the ground and the projection point of the first laser point on the ground; obtaining a second image of the vehicle taken by the shooting device when the vehicle passes the terminal end, wherein the second image includes the second laser point; determining the height of the second laser point from the ground; further determining a second distance based on the height of the laser source from the ground, the height of the second laser point from the ground and the irradiation distance, wherein the second distance is the distance between the projection point of the laser source on the ground and the projection point of the second laser point on the ground; and using the difference between the first distance and the second distance as the vehicle deviation amount, which can reduce the test cost while improving the simplicity of the test operation, measurement efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of a vehicle deviation measurement system provided in one embodiment of the present application;

[0045] Figure 2 A schematic diagram illustrating the principle of a method for measuring vehicle deviation provided in one embodiment of the present application;

[0046] Figure 3 This is a flow chart of the first embodiment of the vehicle deviation measurement method of the present application;

[0047] Figure 4 This is a schematic diagram of the functional modules of an embodiment of a vehicle deviation measurement device of the present application;

[0048] Figure 5 This is a schematic diagram of the hardware structure of the vehicle deviation measurement device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 this application.

[0050] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0051] Figure 1 A schematic diagram of a vehicle deviation measurement system provided in one embodiment of the present application is shown as follows: Figure 1As shown, number 5 represents the test vehicle. Number 10 represents the test track, whose flatness, slope, length, and width meet the requirements of the test standard for a straight road. Clear markings are also required on the road surface at both ends of the test section, namely, the starting end line 7 and the ending end line 4. The distance between the starting end line 7 and the ending end line 4 of the test section is calibrated according to the test standard. An end-end illumination and camera device 9 is installed on one side of the test track, extending from the ending end line 4 of the test section. A starting end illumination and camera device 8 is installed on the other side of the test track, extending from the starting end line 7 of the test section. Illumination and camera devices 8 and 9 function by fixing a laser pointer 1 and a camera 2 on a lifting bracket 3. The axis of the laser pointer 1 and the lens of the camera 2 are aligned with the ending end line 4 and the starting end line 7 of the test section, respectively. The axis of the laser pointer 1 can rotate up and down. The line connecting the projections of the rotation points of the illumination and camera devices 8 and 9 on the ground is parallel to the centerline of the test road. An altimeter 6 with a level is mounted vertically on the side of the test vehicle 5 near the laser source using a suction cup or other means. The longitudinal position of the altimeter 6 relative to the test vehicle 5 is determined based on the vehicle body position at which the deviation is to be measured. The altimeter is adjusted perpendicular to the ground using the level to ensure that the scale corresponds to the height. When the bubble in the level is horizontal, the scale on the altimeter represents the ground clearance at different vehicle body locations. Preferably, the altimeter scale graduations are less than 1 mm; higher graduations increase the measurement accuracy.

[0052] For ease of understanding, the meaning of vehicle deviation is explained as follows: Figure 1 As shown in the figure, when a vehicle drives straight along the centerline of the test lane at a certain speed into the starting end of the test section, the steering wheel is released and the vehicle continues to drive through the test section at a constant speed without applying steering force to the steering wheel. During this process, the lateral offset of a certain point on the vehicle body within the lane when it exits the end of the test section relative to when it enters the starting end of the test section is the driving deviation of the vehicle body point in the test section, as shown in the figure. Figure 1 Middle D. Theoretically, the deviation amount corresponding to different horizontal positions on the vehicle body is different. Usually, the deviation amount at the vehicle's center of mass represents the vehicle's driving deviation amount.

[0053] Figure 2 This is a schematic diagram of the principle of a vehicle running deviation measurement method provided by an embodiment of the present application. In the test preparation stage, the installation height of the laser pen 1 is adjusted to a suitable position by the lifting bracket 3, the laser pen is turned on, and the laser pen is rotated so that its laser beam (such as Figure 211 in the test lane), illuminate it near the center line of the test lane (away from the laser pen) and fix it at the angle, that is, the angle between the axis of the laser pen and the horizontal plane or plumb plane. Use a tape measure or other measuring tool to measure the distance between the projection point of the laser pen's rotation point on the ground and the laser beam's illumination point on the ground, that is, the illumination distance (such as Figure 2 B1 in the figure), and measure the height of the laser pointer's rotation center, that is, the height of the laser source (such as Figure 2 H1 in the .

[0054] In a first aspect, an embodiment of the present application provides a method for measuring the deviation amount of a vehicle while driving.

[0055] In one embodiment, referring to Figure 3 , Figure 3 This is a flow chart of the first embodiment of the vehicle deviation measurement method of this application. Figure 3 As shown, the vehicle deviation measurement method includes:

[0056] Step 310: Obtain the height above the ground and the irradiation distance of the laser source. The laser source is arranged at the starting end and the ending end of the test section. The irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground.

[0057] The laser source is a device capable of emitting a laser beam, including but not limited to a laser generator and a laser pen. The following describes the present application using a laser pen as an example.

[0058] As can be seen from the above description, the height of the laser source from the ground and the irradiation distance have been pre-measured during the test preparation stage and can be directly obtained.

[0059] Step 320: When the vehicle passes the starting end, a first image of the vehicle captured by a camera is acquired. The camera is disposed at the starting end and the ending end of the test section, and the laser source and the camera are located on the same side of the test section. The first image includes a first laser spot.

[0060] Furthermore, after the test starts, the test vehicle 5 is controlled to enter the test section along the center line of the test lane at a prescribed speed, and then pass through the test section without applying steering force to the steering wheel according to standard regulations.

[0061] When the vehicle passes the starting end, the camera 2 at the starting end captures a first image of the laser beam irradiating the side of the vehicle body. It is understood that the first image includes a first laser point formed by the laser beam irradiating the side of the vehicle body.

[0062] Step 330: Determine the height of the first laser point from the ground;

[0063] In specific implementation, the distance between the first laser point and the wheel closest to it can be calculated, and then the wheel radius can be added to determine the height of the first laser point above the ground. The height of the first laser point above the ground can also be determined by a height measuring instrument arranged on the side of the vehicle body close to the laser source.

[0064] Step 340: Determine a first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, where the first distance is the distance between the projection point of the laser source on the ground and the projection point of the first laser point on the ground.

[0065] Further, by Figure 2 It can be seen that based on the height H1 of the laser source above the ground, the height H2 of the first laser point above the ground and the irradiation distance B1, the distance B2 between the projection point of the laser source on the ground and the projection point of the first laser point on the ground can be determined using the principle of similar triangles.

[0066] Step 350: When the vehicle passes the terminal, a second image of the vehicle captured by the camera is acquired, wherein the second image includes a second laser point.

[0067] When the test vehicle 5 passes the end point at the specified speed, the camera 2 at the end point captures a second image of the laser beam irradiating the side of the vehicle body. It can be understood that the second image includes a second laser spot formed by the laser beam irradiating the side of the vehicle body.

[0068] Step 360: Determine the height of the second laser point from the ground;

[0069] In specific implementation, the distance between the second laser point and the wheel closest to it can be calculated, and then the wheel radius can be added to determine the height of the second laser point above the ground. The height of the second laser point above the ground can also be determined by a height measuring instrument arranged on the side of the vehicle body close to the laser source.

[0070] Step 370: Determine a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, where the second distance is the distance between the projection point of the laser source on the ground and the projection point of the second laser point on the ground.

[0071] Further, refer to Figure 2 Based on the height H1 of the laser source above the ground, the height H3 of the second laser point above the ground, and the irradiation distance B1, the distance B3 between the projection point of the laser source on the ground and the projection point of the second laser point on the ground can be determined using the principle of similar triangles.

[0072] Step 380: Using the difference between the first distance and the second distance as the vehicle deviation amount.

[0073] After obtaining the first and second distances, the difference is calculated by subtracting the second distance from the first, and this difference is used as the vehicle deviation. This method has a simple measurement principle and involves simple numerical calculations, which can improve measurement efficiency. This method uses readily available and inexpensive instruments such as height gauges, steel tape measures, lifting brackets, laser pointers, and cameras, resulting in a low total investment cost. The measurement accuracy of this method depends primarily on the precision of the height gauge and steel tape measure, which can easily achieve millimeter-level accuracy, thus improving measurement accuracy.

[0074] In this embodiment, by obtaining the height above the ground and the irradiation distance of the laser source, the laser source is arranged at the starting end and the ending end of the test section, and the irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground; when the vehicle passes the starting end, a first image of the vehicle taken by a shooting device is obtained, the shooting device is arranged at the starting end and the ending end of the test section, and the laser source and the shooting device are located on the same side of the test section, and the first image contains a first laser point; the height above the ground of the first laser point is determined; and further based on the height above the ground of the laser source, the height above the ground of the first laser point and the irradiation distance, a first distance is determined, and the first distance The method comprises the following steps: determining a first laser point on the ground and a second laser point on the ground; obtaining a second image of the vehicle taken by the shooting device when the vehicle passes the terminal end, wherein the second image includes a second laser point; determining the height of the second laser point above the ground; further determining a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground and the irradiation distance, wherein the second distance is the distance between the projection point of the laser source on the ground and the projection point of the second laser point on the ground; and using the difference between the first distance and the second distance as the vehicle deviation amount, thereby reducing the test cost while improving the simplicity of the test operation, the measurement efficiency and the accuracy.

[0075] Furthermore, in one embodiment, determining the height of the first laser point above the ground includes:

[0076] Step 410: Determine a first scale corresponding to the first laser point in a height measuring instrument, wherein the height measuring instrument is arranged on a side of the vehicle body close to the laser source;

[0077] Step 420: Use the height corresponding to the first scale as the height of the first laser point from the ground.

[0078] In a specific implementation, the first laser point in the first image is identified. A straight line perpendicular to the altimeter is drawn from the first laser point. The intersection of the straight line and the altimeter corresponds to the first scale mark. The height corresponding to the first scale mark is then read and used as the height above the ground of the first laser point.

[0079] In this embodiment, the first scale corresponding to the first laser point is determined in a height measuring instrument disposed on a side of the vehicle body near the laser source, and the height corresponding to the first scale is used as the height above the ground of the first laser point. This simple determination process and the high accuracy of the height measuring instrument improve both the efficiency and accuracy of determining the first scale.

[0080] Furthermore, in one embodiment, the first distance is determined based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, and the corresponding formula is:

[0081]

[0082] Wherein, B2 is the first distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H2 is the height of the first laser point from the ground.

[0083] In this embodiment, the formula corresponding to the principle of similar triangles is used to determine the first distance. The measurement principle is simple and only involves simple numerical calculations, which can improve the efficiency of determining the first distance and further improve the efficiency of measuring the vehicle deviation amount.

[0084] Furthermore, in one embodiment, determining the height of the second laser point above the ground includes:

[0085] Step 510: Determine a second scale corresponding to the second laser point in a height measuring instrument, where the height measuring instrument is arranged on a side of the vehicle body close to the laser source.

[0086] Step 520: Use the height corresponding to the second scale as the height of the second laser point from the ground.

[0087] In a specific implementation, the second laser point in the second image is first identified. A straight line perpendicular to the altimeter is drawn from the second laser point. The intersection of the straight line and the altimeter corresponds to the second scale mark. The height corresponding to the second scale mark is then read and used as the height of the second laser point above the ground.

[0088] In this embodiment, the second scale corresponding to the second laser point is determined in a height measuring instrument disposed on a side of the vehicle body near the laser source, and the height corresponding to the second scale is used as the height above the ground of the second laser point. This simple determination process and the high accuracy of the height measuring instrument improve both the efficiency and accuracy of determining the second scale.

[0089] Furthermore, in one embodiment, the second distance is determined based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, and the corresponding formula is:

[0090]

[0091] Wherein, B3 is the second distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H3 is the height of the second laser point from the ground.

[0092] In this embodiment, the formula corresponding to the principle of similar triangles is used to determine the second distance. The measurement principle is simple and only involves simple numerical calculations, which can improve the efficiency of determining the second distance and further improve the efficiency of measuring the vehicle deviation amount.

[0093] In a second aspect, an embodiment of the present application further provides a device for measuring the deviation of a vehicle while driving.

[0094] In one embodiment, referring to Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the vehicle deviation measurement device of the present application. Figure 4 As shown, the vehicle deviation measurement device 400 includes:

[0095] A first acquisition module 410 is configured to acquire the height above the ground and the irradiation distance of the laser source, where the laser source is arranged at the starting and ending ends of the test section. The irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground.

[0096] a second acquisition module 420 configured to acquire a first image of the vehicle captured by a camera when the vehicle passes the starting end, the camera being arranged at the starting end and the ending end of the test section, with the laser source and the camera being located on the same side of the test section, the first image including a first laser spot;

[0097] A first determining module 430 is configured to determine the height of the first laser point above the ground;

[0098] a second determining module 440 configured to determine a first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, where the first distance is the distance between a projection point of the laser source on the ground and a projection point of the first laser point on the ground;

[0099] A third acquisition module 450 is configured to acquire a second image of the vehicle captured by a camera when the vehicle passes the terminal, wherein the second image includes a second laser spot.

[0100] A third determining module 460 is configured to determine the height of the second laser point above the ground;

[0101] a fourth determining module 470, configured to determine a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, where the second distance is the distance between a projection point of the laser source on the ground and a projection point of the second laser point on the ground;

[0102] The fifth determining module 480 is configured to use the difference between the first distance and the second distance as the vehicle deviation amount.

[0103] Furthermore, in one embodiment, the first determining module is specifically configured to:

[0104] Determining a first scale corresponding to the first laser point in a height measuring instrument, wherein the height measuring instrument is arranged on a side of the vehicle body close to the laser source;

[0105] The height corresponding to the first scale is used as the height of the first laser point from the ground.

[0106] Furthermore, in one embodiment, the second determination module is configured to determine the first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, and the corresponding formula is:

[0107]

[0108] Wherein, B2 is the first distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H2 is the height of the first laser point from the ground.

[0109] Furthermore, in one embodiment, the third determining module is specifically configured to:

[0110] determining a second scale corresponding to the second laser point in a height measuring instrument, the height measuring instrument being arranged on a side of the vehicle body close to the laser source;

[0111] The height corresponding to the second scale is used as the height of the second laser point from the ground.

[0112] Furthermore, in one embodiment, the fourth determining module is specifically configured to:

[0113] The second distance is determined based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance. The corresponding formula is:

[0114]

[0115] Wherein, B3 is the second distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H3 is the height of the second laser point from the ground.

[0116] Furthermore, in one embodiment, the laser source is a laser pen.

[0117] Among them, the functional implementation of each module in the above-mentioned vehicle deviation amount measurement device corresponds to the various steps in the above-mentioned vehicle deviation amount measurement method embodiment, and their functions and implementation processes are no longer repeated here.

[0118] In a third aspect, an embodiment of the present application provides a vehicle deviation measurement device, which may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0119] Reference Figure 5 , Figure 5 Schematic diagram of the hardware structure of the vehicle deviation measurement device involved in the embodiment of the present application. In the embodiment of the present application, the vehicle deviation measurement device may include a processor, a memory, a communication interface and a communication bus.

[0120] The communication bus may be of any type and is used to interconnect the processor, memory, and communication interface.

[0121] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces, used to interconnect components within the vehicle deviation measurement device, as well as interfaces used to interconnect the vehicle deviation measurement device with other devices (such as other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, and ATM interfaces; user devices can include displays and keyboards.

[0122] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0123] The processor may be a general-purpose processor that can invoke a vehicle deviation measurement program stored in a memory and execute the vehicle deviation measurement method provided in the embodiments of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the vehicle deviation measurement program is invoked can be referenced to the various embodiments of the vehicle deviation measurement method of the present application and will not be further described here.

[0124] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation to the present application and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0125] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0126] The computer-readable storage medium of the present application stores a vehicle running deviation amount measurement program, wherein when the vehicle running deviation amount measurement program is executed by a processor, the steps of the vehicle running deviation amount measurement method as described above are implemented.

[0127] Among them, the method implemented when the vehicle running deviation amount measurement program is executed can refer to the various embodiments of the vehicle running deviation amount measurement method of the present application, and will not be repeated here.

[0128] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0129] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.

[0130] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0131] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0132] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.

[0133] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present application.

[0134] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for measuring vehicle deviation, characterized in that: The vehicle running deviation measurement method comprises: Obtain the height above the ground and the irradiation distance of the laser source. The laser source is arranged at the starting and ending ends of the test section. The irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground. When the vehicle passes the starting end, obtaining a first image of the vehicle captured by a camera, wherein the camera is arranged at the starting end and the ending end of the test section, and the laser source and the camera are located on the same side of the test section, wherein the first image includes a first laser spot; Determine the height of the first laser point from the ground; Determining a first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, where the first distance is the distance between a projection point of the laser source on the ground and a projection point of the first laser point on the ground; When the vehicle passes the terminal end, obtaining a second image of the vehicle captured by the camera, wherein the second image includes a second laser point; determining the height of the second laser point from the ground; Determining a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, where the second distance is the distance between a projection point of the laser source on the ground and a projection point of the second laser point on the ground; The difference between the first distance and the second distance is used as the vehicle deviation amount.

2. The method for measuring vehicle deviation as claimed in claim 1, wherein: Determining the height of the first laser point from the ground includes: Determining a first scale corresponding to the first laser point in a height measuring instrument, wherein the height measuring instrument is arranged on a side of the vehicle body close to the laser source; The height corresponding to the first scale is used as the height of the first laser point from the ground.

3. The method for measuring vehicle deviation as claimed in claim 1, wherein: The first distance is determined based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance. The corresponding formula is: Wherein, B2 is the first distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H2 is the height of the first laser point from the ground.

4. The method for measuring vehicle deviation as claimed in claim 1, wherein: Determining the height of the second laser point from the ground includes: determining a second scale corresponding to the second laser point in a height measuring instrument, the height measuring instrument being arranged on a side of the vehicle body close to the laser source; The height corresponding to the second scale is used as the height of the second laser point from the ground.

5. The method for measuring vehicle deviation as claimed in claim 1, wherein: The second distance is determined based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance. The corresponding formula is: Wherein, B3 is the second distance, B1 is the irradiation distance, H1 is the height of the laser source from the ground, and H3 is the height of the second laser point from the ground.

6. The method for measuring vehicle deviation as claimed in claim 1, wherein: The laser source is a laser pen.

7. A vehicle deviation measurement device, characterized in that: The vehicle running deviation amount measuring device comprises: A first acquisition module is used to obtain the height above the ground and the irradiation distance of the laser source, where the laser source is arranged at the starting end and the ending end of the test section. The irradiation distance is the distance between the projection point of the laser source on the ground and the irradiation point of the laser beam on the ground; a second acquisition module, configured to acquire a first image of the vehicle captured by a camera when the vehicle passes the starting end, the camera being arranged at the starting end and the ending end of the test section, with the laser source and the camera being located on the same side of the test section, the first image including a first laser spot; A first determining module is used to determine the height of the first laser point from the ground; a second determining module, configured to determine a first distance based on the height of the laser source above the ground, the height of the first laser point above the ground, and the irradiation distance, wherein the first distance is the distance between a projection point of the laser source on the ground and a projection point of the first laser point on the ground; A third acquisition module is configured to acquire a second image of the vehicle captured by a camera when the vehicle passes the terminal, wherein the second image includes a second laser point; A third determining module is used to determine the height of the second laser point from the ground; a fourth determining module, configured to determine a second distance based on the height of the laser source above the ground, the height of the second laser point above the ground, and the irradiation distance, where the second distance is the distance between a projection point of the laser source on the ground and a projection point of the second laser point on the ground; The fifth determining module is configured to use the difference between the first distance and the second distance as the vehicle deviation amount.

8. The vehicle deviation measurement device according to claim 7, wherein: The first determining module is specifically configured to: Determining a first scale corresponding to the first laser point in a height measuring instrument, wherein the height measuring instrument is arranged on a side of the vehicle body close to the laser source; The height corresponding to the first scale is used as the height of the first laser point from the ground.

9. A vehicle deviation measurement device, characterized in that: The vehicle running deviation amount measurement device includes a processor, a memory, and a vehicle running deviation amount measurement program stored in the memory and executable by the processor. When the vehicle running deviation amount measurement program is executed by the processor, the steps of the vehicle running deviation amount measurement method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a vehicle running deviation amount measurement program, wherein when the vehicle running deviation amount measurement program is executed by a processor, the steps of the vehicle running deviation amount measurement method according to any one of claims 1 to 6 are implemented.

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