Vehicle chassis inspection device, method and vehicle scanning system

Abstract

The present disclosure relates to a vehicle chassis inspection device, method and vehicle scanning system, wherein the vehicle chassis inspection device comprises: a vehicle speed acquisition component configured to acquire the vehicle's driving speed information; an image acquisition component (4) configured to capture the vehicle chassis image; and a control component (10) configured to determine the image acquisition cycle according to the driving speed information acquired by the vehicle speed acquisition component, and acquire the vehicle chassis image captured by the image acquisition component (4) according to the image acquisition cycle. This vehicle chassis inspection device can adjust the vehicle chassis image capturing process according to the vehicle speed, and can also ensure the clarity of the vehicle chassis image when the vehicle changes speed, preventing the image from being blurred and deformed, thereby improving the accuracy and efficiency of the vehicle chassis inspection.

Description

Technical Field

[0001] The present disclosure relates to the technical field of safety inspection, and in particular to a vehicle chassis inspection device, method and vehicle scanning system. Background Art

[0002] The chassis inspection system uses image acquisition equipment to take pictures of the vehicle chassis from under the vehicle, stores the acquired pictures locally, and provides an external interface to output the acquired images.

[0003] Although the current chassis inspection system has various forms, it can only simply serve as a vehicle chassis image acquisition device. When the vehicle changes speed through the chassis inspection system, the acquired image may be distorted or deformed; and the equipment has poor environmental adaptability. Dust and rainy and snowy weather have a great impact on the normal use of the equipment and the quality of the image, requiring regular maintenance by personnel; in addition, although some products have integrated license plate recognition systems and can bind the captured chassis image to the license plate, the functions are still relatively simple. Summary of the invention

[0004] Embodiments of the present disclosure provide a vehicle chassis inspection device, method, and vehicle scanning system, which can improve the accuracy of vehicle chassis inspection.

[0005] According to one aspect of the present disclosure, there is provided a vehicle chassis inspection device, comprising:

[0006] A vehicle speed collection component is configured to collect vehicle speed information;

[0007] An image acquisition component configured to capture an image of a vehicle chassis; and

[0008] The control component is configured to determine the image acquisition cycle according to the driving speed information collected by the vehicle speed acquisition component, and acquire the vehicle chassis image taken by the image acquisition component according to the image acquisition cycle.

[0009] In some embodiments, the vehicle speed collection component includes a detection component configured to detect the position and driving speed of the vehicle; or

[0010] The vehicle speed collecting component is configured to collect the position and travel speed information of the vehicle from a detection component other than the vehicle chassis inspection device.

[0011] In some embodiments, the shooting frequency of the image acquisition component is set according to the determined image acquisition cycle.

[0012] In some embodiments, the control component is configured to set the initial shooting frequency of the image acquisition component according to the driving speed information before the vehicle reaches the vehicle chassis inspection device, and to adjust the shooting frequency of the image acquisition component in real time according to the driving speed information while the vehicle passes through the vehicle chassis inspection device.

[0013] In some embodiments, the control component is configured to enable the image acquisition component to take pictures at a shooting frequency required when the vehicle passes at the highest driving speed, and to sample the captured images according to the image acquisition cycle to form processed captured images.

[0014] In some embodiments, the control component is configured to determine the image acquisition cycle according to the number of frames that the image acquisition component needs to collect within a preset movement distance of the vehicle.

[0015] In some embodiments, the vehicle chassis inspection device further includes a heating component, which is disposed near the image acquisition component for achieving drying.

[0016] In some embodiments, the image acquisition component is configured to acquire the adhesion degree of the dryable object in the area corresponding to the photographing surface thereof, and the heating component is turned on when the adhesion degree of the dryable object exceeds a first preset threshold value; and / or

[0017] The vehicle chassis inspection device further includes a temperature detection component configured to detect the temperature of an area surrounding the image acquisition component, and the heating component is turned on when the temperature is lower than a second preset threshold.

[0018] In some embodiments, the vehicle chassis inspection device further includes a housing and an air blowing assembly, the air blowing assembly including:

[0019] a gas source configured to provide compressed gas;

[0020] an air inlet, disposed on the housing and configured to introduce compressed gas provided by a gas source; and

[0021] At least one group of air blowing ports is arranged on the shell, the air blowing ports face the surface to be cleaned of the vehicle chassis inspection device, and are configured to allow the introduced compressed gas to be blown toward the surface to be cleaned for decontamination.

[0022] In some embodiments, the image acquisition component is configured to acquire the degree of dirt on the surface to be cleaned, and the air blowing component is turned on when the degree of dirt exceeds a third preset threshold; or

[0023] The air blowing assembly is turned on at preset time intervals.

[0024] In some embodiments, the vehicle chassis inspection device adopts a portable structure, and the vehicle chassis inspection device also includes a shell and a reflective component arranged on the shell, the reflective component includes an inclined reflective surface for imaging the vehicle chassis, and the shooting surface of the image acquisition component is opposite to the reflective surface.

[0025] In some embodiments, the vehicle chassis inspection device also includes: multiple fill light sources, which are arranged in the shell and located on the side of the image acquisition component away from the reflective surface along the first direction, and each fill light source is arranged at intervals along the second direction and is configured to provide auxiliary light source to the image acquisition component; wherein the first direction is consistent with the vehicle passing direction, and the second direction is perpendicular to the first direction.

[0026] In some embodiments, the vehicle chassis inspection device further includes:

[0027] A first window, provided on the housing, configured to cover a shooting surface of the image acquisition component;

[0028] A second window is provided on the housing and is configured to cover the illumination surface of the fill light source; and

[0029] An air blowing assembly, the air blowing assembly comprising at least one set of air blowing ports, the air blowing ports facing the surface to be cleaned;

[0030] Wherein, the surface to be cleaned includes at least one of the reflective surface, the first window and the second window.

[0031] In some embodiments, the image acquisition component is arranged in the middle area of ​​the shell along the second direction, and at least part of the blowing ports are located on both sides of the installation side wall of the first window along the second direction and face at least one of the reflective surface and the first window.

[0032] In some embodiments, the shell includes a slope structure, which slopes outward from top to bottom and is arranged at an end of the shell along the first direction close to the vehicle entry direction and / or an end of the shell along the second direction.

[0033] In some embodiments, the vehicle chassis inspection device adopts an underground structure and also includes a shell. The image acquisition component is arranged in the shell with the shooting surface facing upward.

[0034] In some embodiments, the vehicle chassis inspection device also includes: multiple fill light sources, arranged in the shell and arranged side by side on both sides of the image acquisition component along the second direction, configured to provide auxiliary light sources to the image acquisition component; wherein the second direction is perpendicular to the vehicle passing direction.

[0035] In some embodiments, the vehicle chassis inspection device further includes:

[0036] A third window is provided on the housing and is configured to entirely cover the irradiation surface of the fill light source and the shooting surface of the image acquisition component; and

[0037] The blowing assembly comprises at least one group of blowing ports, the blowing ports are arranged on the top of the shell body and are located on one side of the third window along the first direction, and the blowing ports face the third window.

[0038] In some embodiments, the housing comprises:

[0039] A bottom box, wherein the top surface of the bottom box is provided with an opening;

[0040] A cover plate, disposed on the top of the bottom box and closing the opening; and

[0041] The slope structure is arranged on the cover plate and extends along the second direction, and the slope structure is inclined outward from top to bottom; wherein the second direction is perpendicular to the passing direction of the vehicle.

[0042] According to another aspect of the present disclosure, there is provided a vehicle scanning system, comprising:

[0043] A radiation scanning device configured to scan items carried by the vehicle; and

[0044] The vehicle chassis inspection device of the above embodiment;

[0045] Among them, the vehicle chassis image and the image of the vehicle's carrying items scanned by the X-ray scanning device are both associated with the vehicle's identity information.

[0046] In some embodiments, the vehicle undercarriage inspection device is battery powered.

[0047] In some embodiments, the X-ray scanning device and the vehicle chassis inspection device use wireless communication.

[0048] In some embodiments, the vehicle scanning system also includes at least one of a license plate recognition device, a vehicle model recognition device and a vehicle weighing device, and the vehicle chassis image is associated with at least one of the vehicle identity information obtained by the license plate recognition device, the vehicle model information obtained by the vehicle model recognition device and the weight information obtained by the vehicle weighing device.

[0049] According to another aspect of the present disclosure, a vehicle chassis inspection method is provided, comprising:

[0050] Collecting the vehicle's running speed information through the vehicle speed collection component; and

[0051] An image acquisition cycle is determined according to the collected driving speed information, and the vehicle chassis image taken by the image acquisition component is acquired according to the image acquisition cycle.

[0052] In some embodiments, the step of acquiring the vehicle chassis image captured by the image acquisition component according to the image acquisition cycle specifically includes:

[0053] Setting the shooting frequency of the image acquisition component according to the image acquisition cycle;

[0054] The image acquisition component is made to capture the vehicle chassis image according to the set capturing frequency.

[0055] In some embodiments, before the step of setting the shooting frequency of the image acquisition component according to the image acquisition cycle, the method further includes:

[0056] Determine whether the vehicle has reached the vehicle chassis inspection device. If not, set the initial shooting frequency of the image acquisition component according to the driving speed information; if the vehicle is passing, adjust the shooting frequency of the image acquisition component in real time according to the driving speed information.

[0057] In some embodiments, the step of acquiring the vehicle chassis image captured by the image acquisition component according to the image acquisition cycle specifically includes:

[0058] The image acquisition component is made to take pictures at a shooting frequency required when the vehicle passes at the highest speed;

[0059] The captured images are sampled according to the image acquisition cycle to form processed captured images.

[0060] In some embodiments, the step of acquiring the vehicle chassis image captured by the image acquisition component according to the image acquisition cycle specifically includes:

[0061] Determine the number of frames that the image acquisition component needs to collect within a preset movement distance;

[0062] The image acquisition cycle is determined based on the number of frames that need to be collected within a preset movement distance of the vehicle.

[0063] Based on the above technical solution, a vehicle chassis inspection device of an embodiment of the present invention is disclosed, in which the control component can determine the image acquisition cycle according to the vehicle speed information collected by the vehicle speed acquisition component, and obtain the vehicle chassis image taken by the image acquisition component according to the image acquisition cycle. This vehicle chassis inspection device can adjust the vehicle chassis image capturing process according to the vehicle speed, and can also ensure the clarity of the vehicle chassis image when the vehicle changes speed, preventing the image from being blurred and deformed, thereby improving the accuracy and efficiency of the vehicle chassis inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0065] Figure 1 This is a schematic diagram of the module composition of an embodiment of the vehicle chassis inspection device disclosed in the present invention;

[0066] Figure 2 It is a structural schematic diagram of an embodiment of the vehicle chassis inspection device disclosed in the present invention;

[0067] Figure 3It is a schematic structural diagram of another embodiment of the vehicle chassis inspection device disclosed in the present invention.

[0068] Description of Reference Numerals

[0069] 1. Shell; 11. Bottom box; 12. Cover plate; 13. Slope structure; 2. Fill light source; 21. Second window; 3. Heating component; 4. Image acquisition component; 41. First window; 42. Third window; 5. Reflecting surface; 6. Blowing assembly; 61. Air inlet; 62. Blowing port; 7. Wire hole; 7', integrated hole; 8. Wireless data transmission module; 9. Detection component; 10. Control component; 20. X-ray scanning device; 30. License plate recognition device; 40. Vehicle type recognition device; 50. Vehicle weighing device. DETAILED DESCRIPTION

[0070] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects, unless explicitly stated not to be combined. In particular, any feature that is considered to be preferred or advantageous can be combined with one or more other features that are considered to be preferred or advantageous.

[0071] The terms "first", "second", etc. that appear in the present disclosure are only for the convenience of description to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0072] In the description of the present disclosure, the directions or positional relationships indicated by “upper”, “lower”, “top”, “bottom”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present disclosure. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present disclosure. Figure 2 and Figure 3 As shown, the "first direction" mentioned later is consistent with the vehicle passing direction, such as the X direction, the "second direction" is perpendicular to the first direction, such as the Y direction, and the Z direction represents the height direction of the vehicle chassis inspection device, which is consistent with the vehicle height direction.

[0073] like Figure 1As shown, the present disclosure provides a vehicle chassis inspection device, hereinafter referred to as "inspection device", which in some embodiments includes: a vehicle speed acquisition component, an image acquisition component 4 and a control component 10. The vehicle speed acquisition component is configured to acquire the vehicle's driving speed information; the image acquisition component 4 is configured to capture the vehicle chassis image, for example, a linear array camera or a planar array camera can be used, and the linear array camera can capture images of any length, which is suitable for capturing vehicle chassis of different lengths; the control component 10 is configured to determine the image acquisition cycle according to the driving speed information acquired by the vehicle speed acquisition component, and acquire the vehicle chassis image captured by the image acquisition component 4 according to the image acquisition cycle.

[0074] This type of vehicle chassis inspection device can adjust the parameters for obtaining the vehicle chassis image according to the vehicle speed. When the vehicle changes speed, it can also ensure the clarity of the vehicle chassis image and prevent the image from being blurred and deformed, thereby improving the accuracy and efficiency of the vehicle chassis inspection.

[0075] In this embodiment, the vehicle speed collection component may include a detection component 9, which is configured to detect the position and driving speed of the vehicle. Since the detection component 9 is provided in the inspection device, the inspection device can be used independently to inspect the vehicle chassis, thereby improving the flexibility and convenience of use. For example, the detection component 9 may be a regional laser scanner, a geomagnetic sensor, an ultrasonic sensor, or an infrared diffuse reflection sensor.

[0076] Alternatively, a communication interface is provided on the housing 1 of the inspection device, and the vehicle speed collection component is configured to collect the vehicle's position and travel speed information from a detection component 9 outside the inspection device. For example, the vehicle speed collection component can obtain the vehicle's position and travel speed information from the detection component 9 of the ray scanning device 20, or from a detection component 9 independently installed outside the inspection device.

[0077] This inspection device can be used in conjunction with other devices in the field to reduce the size and weight of the inspection device, making it more convenient to carry when a portable inspection device is used; in addition, since the inspection device is closer to the ground, installing the detection component 9 at a higher position outside the inspection device can more accurately detect the vehicle's driving conditions, improve the accuracy of chassis inspection, and avoid damage caused by being run over by vehicle tires, thereby improving reliability and safety of use.

[0078] Three different methods of obtaining chassis images based on vehicle speed information are given below.

[0079] In the first embodiment, the control component 10 determines the image acquisition cycle according to the driving speed information, and the image acquisition cycle decreases as the driving speed increases. During the inspection of the vehicle chassis, the shooting frequency of the image acquisition component 4 is set according to the determined image acquisition cycle. After obtaining the image taken by the image acquisition component 4, the control component 10 retains the original number of frames without the need for extraction processing.

[0080] Specifically, the shooting frequency required by the image acquisition component 4 to ensure clear images at different driving speeds of the vehicle can be determined through experiments, and the image acquisition period can be obtained by taking the inverse of the shooting frequency, and then the curve of the image acquisition period changing with the driving speed of the vehicle can be fitted. During the inspection of the vehicle chassis, the shooting frequency of the image acquisition component 4 is set in real time according to the driving speed of the vehicle.

[0081] This embodiment can obtain clear and non-deformed images by setting the shooting frequency of the image acquisition component 4, and obtain the number of image acquisition frames on demand, which can reduce the memory usage of the control component 10 and improve the processing speed.

[0082] Furthermore, the control component 10 is configured to set the initial shooting frequency of the image acquisition component 4 according to the driving speed information before the detection component 9 detects that the vehicle has arrived at the inspection device, and to adjust the shooting frequency of the image acquisition component 4 in real time according to the driving speed information during the process of detecting that the vehicle has passed through the inspection device.

[0083] This inspection method can set the shooting frequency that matches the vehicle speed in advance before the vehicle passes through the inspection device, which can improve the clarity of the image obtained during the initial time period when the vehicle enters the inspection device, and obtain a high-quality chassis image as a whole.

[0084] In the second embodiment, the control component 10 is configured to enable the image acquisition component 4 to shoot at the shooting frequency required when the vehicle passes at the highest driving speed, and to sample the shot images according to the image acquisition cycle and eliminate useless frames to form a processed shot image.

[0085] This embodiment enables the image acquisition component 4 to shoot at a high frequency and obtain clear captured images through post-processing by the control component 10, which can reduce the demand for the response speed of the image acquisition component 4. The control component 10 can also perform real-time or delayed processing on the captured images according to the situation.

[0086] In a third embodiment, the control component 10 is configured to determine the number of frames that the image acquisition component 4 needs to collect within a preset movement distance, and determine the image acquisition cycle according to the number of frames that the vehicle needs to collect within the preset movement distance, so that the image acquisition component 4 obtains the chassis image in a fixed-length triggering manner.

[0087] This embodiment can acquire the chassis image in a manner of external triggering according to the distance parameter, which can reduce the real-time requirement for the image acquisition component 4 .

[0088] The above three embodiments can ensure that the obtained vehicle chassis image is clear and reduce image distortion by introducing the vehicle's driving speed information. Moreover, according to the detection component 9, it can be judged whether the vehicle enters or leaves the inspection device, and image acquisition can be turned on or off in time, reducing the power consumption of the device and the memory occupied by the control component.

[0089] In some embodiments, Figure 2 and Figure 3 As shown, the inspection device of the present disclosure may further include a heating component 3, which is arranged near the image acquisition component 4 for drying. For example, the heating component 3 may be an electric heating component, such as an electric heating wire, an electric heating tube or an electric heating plate, or may also be an electromagnetic heating component.

[0090] In one implementation, the inspection device includes a shell 1, and a heating glass can be installed at a position of the shell 1 close to the image acquisition component 4, or at least a portion of the shell 1 directly close to the image acquisition component 4 uses a heating glass. This method has a simple structure and can reduce the space occupied by the heating component 3.

[0091] In another implementation, since dryable materials such as rain and snow generally accumulate on the top of the shell 1, a heating component 3 may be provided on the top of the shell 1 to improve the drying efficiency.

[0092] On this basis, the image acquisition component 4 is configured to acquire the degree of adhesion of the dryable object in the corresponding area of ​​its own shooting surface. The dryable object can be snow, rain or other liquid or solid objects that can be heated and evaporated. The heating component 3 is turned on when the degree of adhesion of the dryable object exceeds the first preset threshold. This embodiment can determine the degree of adhesion of the dryable object through the image acquisition component, and can more accurately identify whether the lens is blocked by rain or snow through the image, so as to accurately determine the timing of turning on the heating component 3.

[0093] Alternatively, the vehicle chassis inspection device further includes a temperature detection component configured to detect the temperature of the area around the image acquisition component 4, and the heating component 3 is turned on when the temperature is lower than the second preset threshold. This embodiment can automatically turn on the heating component 3 when a low temperature is detected to prevent snow accumulation in rainy and snowy weather. This judgment method is simple and reliable.

[0094] Alternatively, the control component 10 may determine the clarity of the image taken by the image acquisition component 4 through an image recognition algorithm to determine whether it is working in rainy or snowy weather. This method does not require additional detection components and can reduce the size of the inspection device.

[0095] When this embodiment determines that the area corresponding to the shooting surface of the image acquisition component 4 is covered by rain, snow, etc., the heating function can be automatically turned on to melt the snow and dry the surface water droplets, so as to achieve the purpose of snow and water removal and ensure the image shooting effect. Even in rainy and snowy weather or when liquid is attached to the inspection device, the accuracy of vehicle chassis inspection can be improved, thereby improving the versatility of use in different climates and different regions.

[0096] In some embodiments, Figure 2 and Figure 3 As shown, the inspection device of the present disclosure further includes a housing 1 and a blowing assembly 6, the blowing assembly 6 includes: an air source, configured to provide compressed gas, the air source includes an external air compressor, a built-in or external cylinder, etc.; an air inlet 61, provided on the housing 1, configured to introduce compressed gas provided by the air source; and at least one group of blowing ports 62, provided on the housing 1, the blowing ports 62 face the surface to be cleaned of the vehicle chassis inspection device, and are configured to blow the introduced compressed gas toward the surface to be cleaned for decontamination. For example, the surface to be cleaned can be a lens of an optical device, a reflective surface, or an irradiation surface of a fill light, etc.

[0097] This embodiment can automatically clean the surface to be cleaned of the inspection device to remove dust or particles on the surface to be cleaned. Effective decontamination can reduce the false detection rate of optical devices and avoid leaving scratches on the surface to be cleaned by wiping. Moreover, automatic cleaning can also extend the maintenance cycle of the inspection device, reduce maintenance costs and maintenance difficulties, and improve the user experience of the equipment. In addition, automatic cleaning and chassis inspection can be carried out at the same time, and there is no need to stop the machine during surface cleaning, which can improve the use efficiency of the equipment and enhance the customer's experience of using the equipment.

[0098] On this basis, the image acquisition component 4 is configured to acquire the degree of dirt on the surface to be cleaned, and the air blowing component 6 is turned on when the degree of dirt exceeds a third preset threshold.

[0099] This embodiment can perform decontamination when it is determined that the surface to be cleaned is relatively dirty, and can determine the decontamination timing according to the actual degree of dirtiness, thereby preventing the air blowing component 6 from being frequently started.

[0100] Or when the vehicle speed collection component includes an area laser scanner, the area laser scanner may have a self-detection function and be configured to send a prompt signal when it detects that the degree of contamination on the surface to be cleaned exceeds a third preset threshold.

[0101] Or the blowing component 6 is turned on at a preset time interval. This embodiment can regularly remove dirt from the optical device at a certain time interval, without judging the timing of the removal, and is simple to control. Moreover, the cleanliness of the optical device can be ensured by regular removal of dirt, thereby improving the working reliability. Since there is no need to set a dirtiness detection function, it is not affected by the working environment, and can reliably remove dirt even in a harsh working environment. The time interval can be set according to the cleanliness of the use environment.

[0102] The inspection device of this embodiment can be used normally in areas with more dusty climates, and the air blowing component 6 can also assist in clearing rain and snow, and has strong environmental adaptability. After the air blowing component 6 blows away the rain and snow, the time for the heating component 3 to dry the rain and snow on the surface of the shell 1 can be shortened, thereby improving the adaptability of the inspection device in rainy and snowy weather, and having strong practicality when used outdoors, solving the problem that the existing products cannot be used normally in rainy and snowy seasons.

[0103] Specifically, the air blowing assembly 6 also includes a solenoid valve for controlling the on and off of the air circuit. When cleaning is required, the control component 10 opens the solenoid valve, and the air outlet 62 releases high-pressure gas to blow away the floating dust and particles on the surface to be cleaned. The jetting mode can be continuous or pulsed. After cleaning is completed or the air pressure provided by the air source is lower than the preset pressure, the solenoid valve is closed, and the air compressor is started to pressurize.

[0104] Furthermore, filters and dryers are provided in sequence on the air path between the air source and the air outlet 62 to remove moisture and impurities in the external air, prevent impurities carried in the gas from impacting the surface to be cleaned and causing scratches, or prevent moisture in the gas from adhering to the surface to be cleaned and affecting detection or imaging, and also prevent damage to the components in the air path system.

[0105] Furthermore, an overflow valve and a pressure detection component can be provided. The overflow valve is located downstream of the gas source and the overflow pressure is adjustable. The pressure detection component is used to detect the gas supply pressure of the gas source so as to adjust the overflow pressure of the overflow valve and realize the pressure regulating function of the gas circuit system. In this way, the gas circuit pressure can be adjusted according to the degree of contamination to ensure that there is enough air pressure for decontamination, while also saving compressed gas and preventing excessive air pressure from causing damage to the surface to be cleaned. Moreover, the control component 10 can also turn on the air compressor in the gas source when the detection value of the pressure detection component is lower than the preset pressure, thereby ensuring that the compressed air supply is sufficient and the decontamination function can be turned on at any time.

[0106] In some embodiments, Figure 2As shown, the vehicle chassis inspection device adopts a portable structure, and the vehicle chassis inspection device also includes a shell 1 and a reflective component arranged on the shell 1, the reflective component includes an inclined reflective surface 5 for imaging the vehicle chassis, and the shooting surface of the image acquisition component 4 is opposite to the reflective surface 5, including parallel relative and inclined relative situations, and is used to acquire the vehicle chassis image in the reflective surface 5, so as to indirectly obtain the vehicle chassis image through the reflective surface 5.

[0107] like Figure 2 As shown, the shell 1 is generally a flat rectangular structure as a whole, and the reflective component is arranged at one end of the shell 1 away from the vehicle entrance along the first direction, and the reflective surface 5 faces the vehicle entry direction and extends to the edge of the shell 1 along the second direction. The image acquisition component 4 is arranged horizontally, and the shooting surface is arranged opposite to the reflective surface 5. The distance between the reflective surface 5 and the shooting surface gradually increases from bottom to top, and the incident angle formed between the shooting direction and the reflective surface is an acute angle, for example, 45°. The image acquisition component 4 is arranged in the middle area of ​​the shell 1 along the second direction, and mounting side walls are arranged on both sides. The mounting side walls are spaced apart from the bottom of the reflective surface 5. In order to increase the shooting area of ​​the image acquisition component 4, the image acquisition component 4 can protrude from the mounting side wall and be covered with a first window 41 with an arc surface.

[0108] The portable inspection device is flexible and convenient to use. This structure can reduce the overall height of the inspection device. Since the portable inspection device is directly placed on the ground for use, it can be applied to the inspection needs of vehicles with lower chassis. Alternatively, the shooting surface of the image acquisition component 4 can also be tilted relative to the horizontal plane.

[0109] When selecting a model, a smaller image acquisition component 4 may be selected. In a specific embodiment, the inspection device has a width of 400 mm and a height of 75 mm, and a compact appearance. It can inspect vehicles with low chassis and narrow wheelbase, thereby improving the portability and practicality of the system.

[0110] Further, the inspection device further includes: a plurality of fill light sources 2, such as LED light sources or laser light sources, etc., which are arranged in the housing 1 and are located on the side of the image acquisition component 4 away from the reflective surface 5 along the first direction, and each fill light source 2 is arranged at intervals along the second direction, and the irradiation surface of the fill light source 2 can be arranged upward, and is configured to provide auxiliary light sources to the image acquisition component 4, specifically, the brightness of the vehicle chassis and the reflective surface 5 can be increased, so that the image acquisition component 4 obtains a clear image. Among them, the first direction is consistent with the vehicle passing direction, and the second direction is perpendicular to the first direction.

[0111] Furthermore, the inspection device further includes: a first window 41, provided on the housing 1, configured to cover the shooting surface of the image acquisition component 4; a second window 21, provided on the housing 1, configured to cover the irradiation surface of the fill light source 2; and a blowing component 6, the blowing component 6 includes at least one group of blowing ports 62, and the blowing ports 62 face the surface to be cleaned. The surface to be cleaned includes at least one of the reflective surface 5, the first window 41, and the second window 21. This embodiment can increase the clarity of the image acquired by the image acquisition component 4 by automatically blowing the shooting surface of the image acquisition component 4 and the reflective surface 5 and maintaining the fill light brightness.

[0112] like Figure 2 As shown, the image acquisition component 4 is arranged in the middle area of ​​the housing 1 along the second direction, and at least part of the blowing ports 62 are located on both sides of the installation side wall of the first window 41 along the second direction, and face at least one of the reflective surface 5 and the first window 41. The blowing ports 62 arranged here can simultaneously purge the reflective surface 5 and the area corresponding to the shooting surface of the image acquisition component 4. In order to purge the fill light source 2, the blowing ports 62 can be arranged on the top surface of the housing 1.

[0113] Still refer to Figure 2 The housing 1 includes a ramp structure 13, which is inclined outward from top to bottom and is provided at the end of the housing 1 along the first direction close to the vehicle's driving direction and / or the end of the housing 1 along the second direction. When the vehicle passes the inspection device normally, the chassis is located directly above the inspection device, and the tires on both sides are located on the left and right sides of the inspection device respectively. When the vehicle deviates left or right, the tires may pass by pressing the top of the inspection device. The provision of the ramp structure 13 can prevent the tires from colliding with the inspection device, improve the smoothness of the vehicle's driving, and increase the service life of the inspection device.

[0114] In some embodiments, Figure 3 As shown, the inspection device adopts an underground structure, and the image acquisition component 4 is arranged in the housing 1, and the shooting surface is arranged upward. The main part of the housing 1 is pre-buried under the ground, which can reduce the height exposed to the ground and meet the use requirements of vehicles with lower chassis; moreover, the inspection device is firmly installed and will not be dislocated during the inspection process, thereby improving the inspection accuracy.

[0115] like Figure 3 As shown, this inspection device also includes: multiple fill light sources 2, which are arranged in the shell 1 and are arranged side by side on both sides of the image acquisition component 4 along the second direction to balance the fill light on both sides. The irradiation surface of the fill light source 2 faces upward and is configured to provide auxiliary light source to the image acquisition component 4 to obtain a clearer image.

[0116] Furthermore, the inspection device further includes: a third window 42, which is provided on the housing 1 and is configured to cover the irradiation surface of the fill light source 2 and the shooting surface of the image acquisition component 4 as a whole. For example, the third window 42 can be a rectangular long strip window. The blowing component 6 includes at least one group of blowing ports 62, which are provided on the top of the housing 1 and are located on one side of the third window 42 along the first direction. The blowing ports 62 face the third window 42, and the blowing ports 62 can be arranged horizontally so that the gas can be purged along the tangential direction of the third window 42. The group of blowing ports 62 can simultaneously purge the image acquisition component 4 and the fill light source 2, and the structure is simple.

[0117] Still refer to Figure 3 The housing 1 comprises: a bottom box 11, the top surface of which is provided with an opening, and a mounting flange is provided at the opening; a cover plate 12, which is provided on the mounting flange at the top of the bottom box 11 and closes the opening; and a ramp structure 13, which is provided on the cover plate 12 and extends along the second direction, and the ramp structure 13 is inclined outward from top to bottom; wherein the second direction is perpendicular to the direction in which the vehicle passes. The ramp structure 13 can be provided on both sides of the image acquisition component 4 along the first direction.

[0118] Specifically, the cover plate 12 is provided with a first mounting block and a second mounting block which are adjacent or spaced along the first direction, the image acquisition component 4 and the fill light source 2 are arranged in the bottom box 11 and the upper part is located in the first mounting block, and the third window 42 is arranged on the top of the first mounting block. The top of the second mounting block is higher than the first mounting block, and the air outlet 62 is arranged on the side wall of the second mounting block facing and higher than the first mounting block, so that the airflow led out from the air outlet 62 can sweep the surface of the third window 42. For example, the second mounting block is located between the first mounting block and the vehicle entry end along the first direction. The ramp structure 13 can be arranged at the ends of the first mounting block and the second mounting block away from each other.

[0119] During installation, the bottom box 11 and the cover plate 12 can be located as a whole below the ground, with only the first mounting block and the second mounting block located above the ground, thereby reducing the exposed height. When the sum of the dimensions of the first mounting block and the second mounting block along the first direction is smaller than the dimension of the cover plate 12, the area of ​​the exposed portion of the inspection device can also be reduced.

[0120] Secondly, the present disclosure also provides a vehicle scanning system, which in some embodiments includes: a ray scanning device 20, configured to scan the vehicle's carrying goods such as containers, etc., the ray scanning device 20 includes a ray source and a detector arranged on a gantry, the detector is used to receive the ray emitted by the ray source to inspect the vehicle's carrying goods; and the inspection device of the above embodiment. The vehicle chassis image and the image scanned by the ray scanning device 20 on the vehicle's carrying goods are both associated with the vehicle's identity information, for example, the vehicle's identity information may be a license plate number or a special number.

[0121] Specifically, the inspection device can be arranged on the ground directly below the gantry of the ray scanning device 20, or on the ground that does not reach the gantry, or on the ground that exceeds the gantry. An input and output interface is arranged on the housing 1 of the inspection device, and the vehicle speed acquisition component obtains the vehicle position and vehicle speed information detected by the detection component 9 in the ray scanning device 20 through the input and output interface. When the detection component 9 detects that the vehicle is about to arrive, the inspection device and the ray scanning device 20 can be turned on at the same time. Alternatively, the inspection device can also be used alone.

[0122] The inspection device can use at least one of the following power supply methods:

[0123] Firstly, the inspection device is provided with a plug and can be powered by connecting to an external socket. This method enables the inspection device to meet the needs of long-term use and provides stable power supply.

[0124] Secondly, the inspection device is powered by the power supply of the ray scanning device 20 , which can reduce the requirement of setting up an external power supply and is more flexible to use with the ray scanning device 20 .

[0125] Third, the inspection device is powered by batteries, and the battery capacity can be designed according to the endurance requirements, or the battery can be replaced to increase the continuous working time of the system. This method can increase the flexibility of the inspection device. When using a portable inspection device, the inspection device can be flexibly transferred between different ray scanning devices 20 according to needs, without considering the power wiring problem, and is easy to use.

[0126] Furthermore, the inspection device may also be configured to be powered by both a battery and an external power supply, and the control component 10 is configured to select a power supply strategy according to the time the inspection device needs to work continuously, so as to select a suitable power supply mode.

[0127] Furthermore, both the ray scanning device 20 and the inspection device are provided with a wireless data transmission module 8 for wireless communication. In this way, there is no need to set up a communication cable between the ray scanning device 20 and the inspection device, and underground wiring is omitted when an underground inspection device is used. When a portable inspection device is used, it can prevent vehicles from contacting the cables when passing by, thereby improving the reliability and safety of the system.

[0128] Specifically, the control component 10 sends control instructions to each image acquisition component and the fill light source 2 in the inspection device, and each image acquisition component uploads the vehicle chassis image information to the control component 10. The control component 10 of the inspection device and the control component of the ray scanning device 20 can be set separately, or can be integrated, and the control component 10 of the inspection device is directly embedded in the control component of the ray scanning device 20, so as to further reduce the volume and weight of the inspection device and improve portability.

[0129] When the inspection device is powered by a battery and communicates wirelessly with the ray scanning device 20, the inspection device and the ray scanning device 20 physically form two independent components, without any wiring, and it is easy to arrange and adjust the position of the inspection device, which can also improve the reliability and safety of the system operation.

[0130] Alternatively, when the inspection device is powered by an external power supply or uses a wired network for communication, such as Figure 2 As shown, a wire hole 7 may be provided on the side of the housing 1 to allow the power line and the communication line to pass through. Figure 3 As shown, the air inlet 61 and the wire hole 7 can also be arranged as an integrated hole 7'.

[0131] In some embodiments, the vehicle scanning system of the present disclosure further includes at least one of a license plate recognition device 30, a vehicle model recognition device 40, and a vehicle weighing device 50, and the vehicle chassis image is associated with at least one of the vehicle identity information obtained by the license plate recognition device 30, the vehicle model information obtained by the vehicle model recognition device 40, and the weight information obtained by the vehicle weighing device 50. By providing multiple input and output interfaces in the vehicle scanning system, the vehicle chassis image obtained by the inspection device can be bound to other information related to the vehicle, making the system more functional.

[0132] Finally, the present disclosure provides a vehicle chassis inspection method, hereinafter referred to as “inspection method”, which, in some embodiments, includes:

[0133] Step 101: collecting the vehicle's running speed information through a vehicle speed collection component; and

[0134] Step 102: determine an image acquisition cycle according to the collected driving speed information, and acquire the vehicle chassis image taken by the image acquisition component 4 according to the determined image acquisition cycle.

[0135] Among them, steps 101 and 102 can be executed cyclically during the chassis inspection process, step 101 is executed before 102 , and step 102 can be executed by the control component 10 .

[0136] This inspection method can adjust the parameters for obtaining the vehicle chassis image according to the vehicle speed. When the vehicle changes speed, it can also ensure the clarity of the vehicle chassis image and prevent the image from being blurred or deformed, thereby improving the accuracy and efficiency of the vehicle chassis inspection.

[0137] In the first embodiment, the step 102 of acquiring the vehicle chassis image captured by the image acquisition component 4 according to the image acquisition cycle specifically includes:

[0138] Step 201, setting the shooting frequency of the image acquisition component 4 according to the image acquisition cycle;

[0139] Step 202: Enable the image acquisition component 4 to capture the vehicle chassis image at a set capturing frequency.

[0140] Steps 201 and 202 can be executed sequentially by the control component 10. This embodiment can obtain clear and non-deformed images by setting the shooting frequency of the image acquisition component 4 and obtaining the image acquisition frame number on demand, which can reduce the memory usage of the control component 10 and improve the processing speed.

[0141] Furthermore, before step 201, the inspection method further includes:

[0142] Step 203, determine whether the vehicle has reached the vehicle chassis inspection device. If not, set the initial shooting frequency of the image acquisition component 4 according to the driving speed information; if the vehicle is passing, adjust the shooting frequency of the image acquisition component 4 in real time according to the driving speed information.

[0143] This inspection method can set the shooting frequency that matches the vehicle speed in advance before the vehicle passes through the inspection device, which can improve the clarity of the image obtained during the initial time period when the vehicle enters the inspection device, and obtain a high-quality chassis image as a whole.

[0144] In the second embodiment, the step 102 of acquiring the vehicle chassis image captured by the image acquisition component 4 according to the image acquisition cycle specifically includes:

[0145] Step 301, causing the image acquisition component 4 to take pictures according to the shooting frequency required when the vehicle passes at the highest speed;

[0146] Step 302: Sampling the captured images according to the image acquisition cycle to form processed captured images.

[0147] Steps 301 and 302 may be executed sequentially by the control component 10. For example, data may be uploaded in batches. After taking images of a preset length in step 301, the images are then extracted in step 302, thereby increasing the data processing speed.

[0148] In the third embodiment, acquiring the vehicle chassis image captured by the image acquisition component 4 according to the image acquisition cycle in step 102 specifically includes:

[0149] Step 401, determining the number of frames that the image acquisition component 4 needs to collect within a preset movement distance;

[0150] Step 402: Determine an image acquisition cycle according to the number of frames that need to be acquired within a preset movement distance of the vehicle.

[0151] This embodiment can acquire the chassis image in a manner of external triggering according to the distance parameter, which can reduce the real-time requirement for the image acquisition component 4 .

[0152] The above three embodiments can ensure that the obtained vehicle chassis image is clear and reduce image distortion by introducing the vehicle's driving speed information. Moreover, according to the detection component 9, it can be judged whether the vehicle enters or leaves the inspection device, and image acquisition can be turned on or off in time, reducing the power consumption of the device and the memory occupied by the control component.

[0153] Those skilled in the art will appreciate that the control components and algorithm steps disclosed herein can be implemented by electronic hardware, computer software, or a combination of both, and the software module can be placed in any form of computer storage medium.

[0154] The above is a detailed introduction to a vehicle chassis inspection device, method and vehicle scanning system provided by the present disclosure. Specific embodiments are used herein to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method and core idea of ​​the present disclosure. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. A vehicle chassis inspection device, characterized in that: include: A vehicle speed collection component is configured to collect vehicle speed information; An image acquisition component (4) is configured to capture an image of the vehicle chassis; and A control component (10) is configured to determine an image acquisition cycle according to the driving speed information acquired by the vehicle speed acquisition component, and acquire the vehicle chassis image taken by the image acquisition component (4) according to the image acquisition cycle; The vehicle chassis inspection device further comprises a housing (1) and an air blowing assembly (6), wherein the air blowing assembly (6) comprises: an air source configured to provide compressed air; an air inlet (61) provided on the housing (1) and configured to introduce compressed air provided by the air source; and at least one group of air blowing ports (62) provided on the housing (1), wherein the air blowing ports (62) face a surface to be cleaned of the vehicle chassis inspection device and are configured to allow the introduced compressed air to be blown toward the surface to be cleaned to remove dirt; The vehicle chassis inspection device adopts a portable structure and further comprises a first window (41) and a reflective component provided on the housing (1), wherein the first window (41) is configured to cover a shooting surface of the image acquisition component (4); the reflective component comprises an inclined reflective surface (5) for imaging the vehicle chassis, the shooting surface of the image acquisition component (4) being opposite to the reflective surface (5); the image acquisition component (4) is provided in a middle area of ​​the housing (1) along the second direction, a plurality of groups of the air blowing ports (62) are provided, at least some of the groups of the air blowing ports (62) are located on the mounting side walls on both sides of the first window (41) and face at least one of the reflective surface (5) and the first window (41); or The vehicle chassis inspection device adopts an underground structure and further comprises a third window (42) arranged on the shell (1); the image acquisition component (4) is arranged in the shell (1) with the shooting surface facing upwards; the third window (42) covers the shooting surface of the image acquisition component (4); the air blowing port (62) is arranged at the top of the shell (1) and is located on one side of the third window (42) along a first direction; the air blowing port (62) faces the third window (42); the shell (1) comprises a bottom box (11) and a cover plate (12); the cover plate (12) closes an opening of the bottom box (11); a first mounting block and a second mounting block are arranged adjacently or spaced apart on the cover plate (12) along the first direction; the third window (42) is arranged at the top of the first mounting block; the top of the second mounting block is higher than the first mounting block; the air blowing port (62) is arranged on a side wall of the second mounting block facing and higher than the first mounting block, so as to draw air from the air blowing port (62) to blow the surface of the third window (42); The first direction is consistent with the vehicle passing direction, and the second direction is perpendicular to the first direction.

2. The vehicle chassis inspection device according to claim 1, characterized in that: The vehicle speed collection component comprises a detection component (9) configured to detect the position and driving speed of the vehicle; or The vehicle speed collecting component is configured to collect the position and driving speed information of the vehicle from a detection component (9) other than the vehicle chassis inspection device.

3. The vehicle chassis inspection device according to claim 1, characterized in that: The shooting frequency of the image acquisition component (4) is set according to the determined image acquisition cycle.

4. The vehicle chassis inspection device according to claim 3, characterized in that: The control component (10) is configured to set an initial shooting frequency of the image acquisition component (4) according to driving speed information before the vehicle reaches the vehicle chassis inspection device, and to adjust the shooting frequency of the image acquisition component (4) in real time according to driving speed information when the vehicle passes through the vehicle chassis inspection device.

5. The vehicle chassis inspection device according to claim 1, characterized in that: The control component (10) is configured to cause the image acquisition component (4) to take pictures at a shooting frequency required when a vehicle passes at a maximum driving speed, and to extract the taken images according to the image acquisition cycle to form processed taken images.

6. The vehicle chassis inspection device according to claim 1, characterized in that: The control component (10) is configured to determine the image acquisition cycle according to the number of frames that the image acquisition component (4) needs to acquire within a preset movement distance of the vehicle.

7. The vehicle chassis inspection device according to any one of claims 1 to 6, characterized in that: It also includes a heating component (3) which is arranged near the image acquisition component (4) and is used to achieve drying.

8. The vehicle chassis inspection device according to claim 7, characterized in that: The image acquisition component (4) is configured to acquire the degree of adhesion of the dryable object in the area corresponding to the photographing surface thereof, and the heating component (3) is turned on when the degree of adhesion of the dryable object exceeds a first preset threshold value; and / or The vehicle chassis inspection device further comprises a temperature detection component configured to detect the temperature of an area surrounding the image acquisition component (4), and the heating component (3) is turned on when the temperature is lower than a second preset threshold.

9. The vehicle chassis inspection device according to claim 1, characterized in that: The image acquisition component (4) is configured to acquire the degree of dirt on the surface to be cleaned, and the air blowing component (6) is turned on when the degree of dirt exceeds a third preset threshold; or The blowing component (6) is turned on at a preset time interval.

10. The vehicle chassis inspection device according to claim 1, characterized in that: The vehicle chassis inspection device adopts a portable structure and further comprises: a plurality of fill light sources (2) arranged in the housing (1) and located on a side of the image acquisition component (4) away from the reflective surface (5) along a first direction, and each of the fill light sources (2) is arranged at intervals along a second direction and is configured to provide auxiliary light sources to the image acquisition component (4).

11. The vehicle chassis inspection device according to claim 10, characterized in that: Also includes: A second window (21), provided on the housing (1), configured to cover an illumination surface of the supplementary light source (2); Wherein, the surface to be cleaned comprises at least one of the reflective surface (5), the first window (41) and the second window (21).

12. The vehicle chassis inspection device according to claim 1, characterized in that: The vehicle chassis inspection device adopts a portable structure. The housing (1) comprises a slope structure (13). The slope structure (13) is inclined outward from top to bottom and is arranged at an end of the housing (1) along a first direction close to a vehicle entry direction and / or an end of the housing (1) along a second direction.

13. The vehicle chassis inspection device according to claim 1, characterized in that: The vehicle chassis inspection device adopts an underground structure and further comprises: a plurality of supplementary light sources (2), which are arranged in the housing (1) and arranged side by side on both sides of the image acquisition component (4) along the second direction, and are configured to provide auxiliary light sources to the image acquisition component (4).

14. The vehicle chassis inspection device according to claim 13, characterized in that: The third window (42) is configured to entirely cover the illumination surface of the fill light source (2) and the shooting surface of the image acquisition component (4).

15. The vehicle chassis inspection device according to claim 1, characterized in that: The vehicle chassis inspection device adopts an underground structure, and the housing (1) comprises: A bottom box (11), wherein the top surface of the bottom box (11) is provided with an opening; A cover plate (12) is disposed on the top of the bottom box (11) and closes the opening; and The slope structure (13) is provided on the cover plate (12) and extends along the second direction, and the slope structure (13) is inclined outward from top to bottom.

16. A vehicle scanning system, characterized in that: include: A radiation scanning device (20) configured to scan items carried by the vehicle; and The vehicle chassis inspection device according to any one of claims 1 to 15; The vehicle chassis image and the image of the vehicle-carried items scanned by the ray scanning device (20) are both associated with the vehicle identity information.

17. The vehicle scanning system according to claim 16, characterized in that: The vehicle chassis inspection device is powered by a battery.

18. The vehicle scanning system according to claim 16, characterized in that: The ray scanning device (20) and the vehicle chassis inspection device adopt wireless communication.

19. The vehicle scanning system according to claim 16, characterized in that: The invention also comprises at least one of a license plate recognition device (30), a vehicle model recognition device (40) and a vehicle weighing device (50), wherein the vehicle chassis image is associated with at least one of vehicle identity information obtained by the license plate recognition device (30), vehicle model information obtained by the vehicle model recognition device (40) and weight information obtained by the vehicle weighing device (50).

20. A vehicle chassis inspection method based on the vehicle chassis inspection device according to any one of claims 1 to 15, characterized in that: include: Collecting the vehicle's running speed information through the vehicle speed collection component; and An image acquisition cycle is determined according to the collected driving speed information, and the vehicle chassis image taken by the image acquisition component (4) is acquired according to the image acquisition cycle.

21. The vehicle chassis inspection method according to claim 20, characterized in that: The step of acquiring the vehicle chassis image taken by the image acquisition component (4) according to the image acquisition cycle specifically comprises: Setting the shooting frequency of the image acquisition component (4) according to the image acquisition cycle; The image acquisition component (4) is enabled to capture the vehicle chassis image at a set capturing frequency.

22. The vehicle chassis inspection method according to claim 21, characterized in that: Before the step of setting the shooting frequency of the image acquisition component (4) according to the image acquisition cycle, the method further comprises: It is determined whether the vehicle has arrived at the vehicle chassis inspection device; if the vehicle has not arrived, the initial shooting frequency of the image acquisition component (4) is set according to the driving speed information; if the vehicle is passing, the shooting frequency of the image acquisition component (4) is adjusted in real time according to the driving speed information.

23. The vehicle chassis inspection method according to claim 20, characterized in that: The step of acquiring the vehicle chassis image taken by the image acquisition component (4) according to the image acquisition cycle specifically comprises: The image acquisition component (4) is configured to take pictures at a shooting frequency required when a vehicle passes at a maximum speed; The captured images are sampled according to the image acquisition cycle to form processed captured images.

24. The vehicle chassis inspection method according to claim 20, characterized in that: The step of acquiring the vehicle chassis image taken by the image acquisition component (4) according to the image acquisition cycle specifically comprises: Determining the number of frames that the image acquisition component (4) needs to collect within a preset movement distance; The image acquisition cycle is determined according to the number of frames that need to be acquired within a preset movement distance of the vehicle.

Images