Vehicle inspection systems, methods and controllers

Abstract

The present application proposes a vehicle security inspection system, method and controller, which relate to the field of security inspection technology. A vehicle security inspection system of the present application includes: a backscattering detector for backscattering detection of the vehicle to be tested; a transmission detector for transmission detection of the vehicle to be tested; and a controller; wherein the controller turns on the ray generator of the transmission detector after determining that the cab of the vehicle to be tested has passed through the transmission detection area based on the backscattering detection data. Such a vehicle security inspection system can determine the position of the vehicle cab relative to the transmission detection area based on the backscattering detection data on the basis of backscattering detection of the vehicle, and turn on the ray generator of the transmission detector after the cab leaves the transmission detection area, so as to perform backscattering detection on the entire vehicle, avoid transmission detection on the cab, and perform backscattering detection on the entire vehicle at the same time, thereby improving the security inspection effect while ensuring the safety of the cab personnel.

Description

Technical Field

[0001] The present application relates to the field of security inspection technology, and in particular to a vehicle security inspection system, method and controller. Background Art

[0002] Currently, there are two imaging methods in the vehicle security inspection process, one is X-ray fluoroscopic imaging, and the other is X-ray backscatter imaging.

[0003] In the process of rapid vehicle inspection using fluoroscopic imaging, high-dose X-rays are required to pass through the vehicle, which may cause certain harm to the occupants in the cab. However, if the cab is avoided and only the body is scanned at a high dose, it will be impossible to check the items carried in the cab, reducing the thoroughness of the inspection.

[0004] Backscatter imaging technology uses X-ray beams to illuminate objects and detect the backscattered photons of the objects to form images. It has the advantages of low radiation dose, sensitivity to light materials, and intuitive images. However, the X-rays used for backscatter imaging have low penetrating power and can only image the surface of the inspected object. The penetrating power is relatively weak and it is impossible to inspect deeply into the interior of the object. Summary of the invention

[0005] One purpose of the present application is to propose a solution for vehicle security inspection using a combination of X-ray transmission and backscattering, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0006] According to one aspect of the present application, a vehicle security inspection system is proposed, comprising: a backscatter detector for performing backscatter detection on a vehicle to be tested; a transmission detector for performing transmission detection on the vehicle to be tested; and a controller; wherein the controller turns on a ray generator of the transmission detector after determining, based on backscatter detection data, that the cab of the vehicle to be tested has passed through a transmission detection area.

[0007] Optionally, the controller determines that the cab passes through the transmission detection area according to a difference between the positions of the backscatter detection area and the transmission detection area, and a position of the cab relative to the backscatter detection area.

[0008] Optionally, the controller includes: a target position determination unit, used to determine the target position of the cab relative to the backscatter detection area after the cab passes through the transmission detection area based on the positions of the backscatter detection area and the transmission detection area; a cab position determination unit, used to determine the position of the cab relative to the backscatter detection area based on the backscatter detection data; and a starting unit, used to enable the controller to turn on the ray generator of the transmission detector when the cab reaches the target position.

[0009] Optionally, the cab position determination unit determines the position of the cab relative to the backscatter detection area by image processing.

[0010] Optionally, the transmission detection area is located at the same position as the backscatter detection area; when the controller determines, based on the backscatter detection data, that the cab has left the backscatter detection area, the controller turns on the ray generator of the transmission detector.

[0011] Optionally, the transmission detection area is located behind the backscatter detection area along the vehicle's traveling direction, and the transmission detection area is connected to the backscatter detection area; when the controller determines that the cab has completely entered the backscatter detection area based on the backscatter detection data, the ray generator of the transmission detector is turned on.

[0012] Optionally, the transmission detection area is located behind the backscatter detection area along the vehicle's traveling direction, and the transmission detection area overlaps with the backscatter detection area; when the controller determines based on the backscatter detection data that the cab leaves the transmission detection area, the controller turns on the ray generator of the transmission detector.

[0013] Optionally, the backscatter detector is located at one or more of the side, bottom, and top of the passage through which the vehicle to be detected passes.

[0014] Optionally, when the vehicle completely passes through the transmission detection area, the controller turns off the ray generator of the transmission detector.

[0015] Optionally, the controller generates vehicle security inspection information based on the backscatter detection data and the transmission detection data.

[0016] Such a vehicle security inspection system can determine the position of the vehicle cab relative to the transmission detection area based on the backscatter detection data on the basis of backscatter detection of the vehicle. When the cab leaves the transmission detection area, the ray generator of the transmission detector is turned on, thereby performing backscatter detection on the entire vehicle, avoiding transmission detection of the cab. At the same time, backscatter detection is performed on the entire vehicle, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0017] According to another aspect of the present application, a vehicle security inspection method is proposed, including: obtaining backscatter detection data of the vehicle to be tested; determining the position of the cab of the vehicle to be tested relative to the transmission detection area based on the backscatter detection data; when it is determined that the cab passes through the transmission detection area, turning on the ray generator of the transmission detector.

[0018] Optionally, determining the position of the cab of the vehicle to be tested based on the backscatter detection data includes: determining the position of the cab relative to the transmission detection area based on the difference between the positions of the backscatter detection area and the transmission detection area, and the position of the cab relative to the backscatter detection area.

[0019] Optionally, the position of the cab of the vehicle to be tested relative to the transmission detection area is determined based on the backscatter detection data, and when it is determined that the cab has passed through the transmission detection area, the ray generator of the transmission detector is turned on, including: determining the target position of the cab of the vehicle to be tested relative to the backscatter detection area after the cab passes through the transmission detection area based on the positions of the backscatter detection area and the transmission detection area; determining the position of the cab relative to the backscatter detection area based on the backscatter detection data; and when it is determined that the cab has reached the target position based on the backscatter detection data, turning on the ray generator of the transmission detector.

[0020] Optionally, the position of the cab relative to the backscatter detection area is determined by image processing based on the backscatter detection data.

[0021] Optionally, the vehicle security inspection method further includes: after determining that the vehicle passes through the transmission detection area, turning off the ray generator of the transmission detector.

[0022] Optionally, the vehicle security inspection method further includes: generating vehicle security inspection information according to the backscatter detection data and the transmission detection data.

[0023] Through this method, on the basis of backscatter detection of the vehicle, the position of the vehicle cab relative to the transmission detection area can be determined according to the backscatter detection data. When the cab leaves the transmission detection area, the ray generator of the transmission detector is turned on, so that backscatter detection can be performed on the entire vehicle, avoiding transmission detection of the cab. At the same time, backscatter detection can be performed on the entire vehicle, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0024] According to another aspect of the present application, a vehicle security inspection controller is proposed, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute any one of the vehicle security inspection methods proposed above based on instructions stored in the memory.

[0025] Such a vehicle security inspection controller can determine the position of the vehicle cab relative to the transmission detection area based on the backscatter detection data. When the cab leaves the transmission detection area, the ray generator of the transmission detector is turned on, thereby performing backscatter detection on the entire vehicle and avoiding transmission detection of the cab, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0026] According to another aspect of the present application, a computer-readable storage medium is provided, on which computer program instructions are stored, and when the instructions are executed by a processor, the steps of any one of the vehicle security inspection methods provided above are implemented.

[0027] Such a computer-readable storage medium can determine the position of the vehicle cab relative to the transmission detection area based on the backscatter detection data by executing the instructions thereon, and turn on the ray generator of the transmission detector after the cab leaves the transmission detection area, thereby performing backscatter detection on the entire vehicle, avoiding transmission detection of the cab, and performing backscatter detection on the entire vehicle at the same time, thereby improving the security inspection effect while ensuring the safety of the cab occupants. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 A schematic diagram of an embodiment of a vehicle security inspection system of the present application.

[0030] Figure 2 The diagram is a schematic diagram of an embodiment of the deployment of a transmission detector or a backscatter detector in the vehicle security inspection system of the present application.

[0031] Figure 3A It is a schematic diagram of an embodiment of a transmission detection area and a backscatter detection area in the vehicle security inspection system of the present application.

[0032] Figure 3B It is a schematic diagram of another embodiment of the transmission detection area and the backscatter detection area in the vehicle security inspection system of the present application.

[0033] Figure 3C It is a schematic diagram of another embodiment of the transmission detection area and the backscatter detection area in the vehicle security inspection system of the present application.

[0034] Figure 3D It is a schematic diagram of another embodiment of the transmission detection area and the backscatter detection area in the vehicle security inspection system of the present application.

[0035] Figure 4 A schematic diagram of an embodiment of a vehicle security inspection method of the present application.

[0036] Figure 5 This is a schematic diagram of an embodiment of a vehicle security inspection controller of the present application.

[0037] Figure 6 This is a schematic diagram of another embodiment of the vehicle security inspection controller of the present application.

[0038] Figure 7 A schematic diagram of another embodiment of the vehicle security inspection controller of the present application. DETAILED DESCRIPTION

[0039] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments.

[0040] A schematic diagram of an embodiment of the vehicle security inspection system of the present application is shown in FIG. Figure 1 As shown. The vehicle security inspection system includes a backscatter detector 101, a transmission detector 102 and a controller 103. The backscatter detector 101 can perform backscatter detection on the vehicle. The backscatter detector 101 remains in a normally open state, that is, all parts of the vehicle to be tested are detected. The backscatter detector 101 sends the detection data to the controller 103. The controller 103 analyzes the backscatter detection data, determines that the cab of the vehicle to be tested has passed through the transmission detection area, and then turns on the ray generator of the transmission detector. At this time, the transmission detector 102 starts to detect the vehicle in the transmission detection area. Since the cab of the vehicle has passed through the transmission detection area, the transmission detection of the vehicle cab is avoided.

[0041] Such a vehicle security inspection system can determine the position of the vehicle cab relative to the transmission detection area based on the backscatter detection data on the basis of backscatter detection of the vehicle. When the cab leaves the transmission detection area, the ray generator of the transmission detector is turned on, thereby performing backscatter detection on the entire vehicle, avoiding transmission detection of the cab. At the same time, backscatter detection is performed on the entire vehicle, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0042] In one embodiment, the controller can also determine that the vehicle detection has been completed based on the transmission detection data, and then turn off the transmission detector, or only turn off the ray generator of the transmission detector, thereby reducing the harm of X-rays to surrounding personnel on the one hand, and achieving energy saving on the other hand.

[0043] In one embodiment, after obtaining the transmission detection data and the backscatter detection data, the controller uses the backscatter detection data to perform safety detection on the entire vehicle, and uses the transmission detection data to perform safety detection on areas of the vehicle other than the cab, thereby ensuring the safety of the cab occupants, achieving security inspection of the cab, and ensuring the thoroughness of the inspection.

[0044] In one embodiment, since the deployment positions of the transmission detector and the backscatter detector are relatively fixed, their detection areas are also relatively fixed. Therefore, based on the difference in the positions of the backscatter detection area and the transmission detection area, after obtaining the position of the vehicle cab in the backscatter detection area, the position of the cab relative to the transmission detection area can be determined, and then the vehicle cab passing through the transmission detection area can be determined in real time. In one embodiment, the controller can pre-store image features between the vehicle cab and the vehicle body, such as gaps, height differences, curvatures or shape differences, etc., and determine the position of the cab through image recognition.

[0045] Such a system can determine the position of the vehicle cab relative to the transmission detection area based on the backscatter detection data, and then trigger the ray generator of the transmission detector to work, without the need for additional sensors to trigger, reducing system costs and facilitating system deployment.

[0046] In one embodiment, the backscatter detectors can be deployed as follows: Figure 2 As shown in the figure, the direction of travel of the vehicle is perpendicular to the paper plane and inward or outward. Backscatter detector 204 can be placed or embedded in the ground; backscatter detector 203 can be placed on the ceiling or fixed to the top frame; backscatter detectors 201 and 202 can stand on the side of the channel. In one embodiment, a frame structure can be set up, and backscatter detectors are fixed around the frame structure, and the vehicle passes through the frame structure. Backscatter detection data from multiple angles can be processed separately, or they can be synthesized and processed uniformly.

[0047] In this way, the system can perform safety inspection on the vehicle from multiple directions, such as top, bottom, left and right, which reduces the blind spots of security inspection and improves the reliability of the system. In one embodiment, the number of detectors can be appropriately reduced in consideration of the requirements of the use occasion, cost and environment.

[0048] In one embodiment, the transmission detection area 32 may be located in front of the backscatter detection area 31 along the vehicle travel direction 30. Figure 3A As shown, the vehicle cab passes through the backscatter detection area 31 and then enters the transmission detection area 32. The controller can determine the speed of the vehicle according to the change of the backscatter detection data, and then determine the time t required for the cab to reach the transmission detection area 32 after passing through the backscatter detection area 31 according to the distance between the backscatter detection area 31 and the transmission detection area 32, and the controller turns on the ray generator of the transmission detector after a delay of t.

[0049] Such a system can determine the vehicle speed and position based on the transmission detection data, and then determine the moment when the cab passes through the transmission detection area. It has low efficiency requirements for turning on the ray generator and can avoid missing detection of areas outside the vehicle cab.

[0050] In one embodiment, Figure 3B As shown, the transmission detection area 32 can be equivalent to the backscatter detection area 31. When the controller determines that the vehicle cab passes through the backscatter detection area 31 according to the backscatter detection data, the ray generator of the transmission detector is immediately turned on, so there is no need to detect the vehicle speed, which reduces the amount of calculation of the controller, reduces the requirements for the controller's calculation ability, and improves the control efficiency.

[0051] In one embodiment, Figure 3CAs shown, the transmission detection area 32 can be located behind the backscatter detection area 31 along the vehicle's driving direction 30. At this time, when the controller determines that the vehicle's cab has completely entered the backscatter detection area 31, the cab has completely passed through the transmission detection area 32, and the controller turns on the ray generator of the transmission detector, thereby eliminating the need to detect the vehicle's driving speed and reducing the amount of calculation of the controller; at the same time, it avoids detecting part of the cab when the vehicle speed is slow and the ray generator is turned on at a fast speed, which affects the driver's health.

[0052] In one embodiment, Figure 3D As shown, the ray emitters and receivers are in a multi-row array structure, and the backscatter detection area 31 and the transmission detection area 32 may overlap to a certain extent or completely overlap. The controller may determine the position of the transmission detection area 32 in the backscatter detection area 31, thereby determining the position of the cab in the backscatter detection area 31 when the cab passes through the transmission detection area 32, and then turn on the ray generator of the transmission detector when the cab reaches this position.

[0053] A schematic diagram of an embodiment of the vehicle security inspection method of the present application.

[0054] In step 401, backscatter detection data of a vehicle to be tested is obtained.

[0055] In step 402, the position of the cab of the vehicle to be tested relative to the transmission detection area is determined based on the backscatter detection data. In one embodiment, since the deployment positions of the transmission detector and the backscatter detector are relatively fixed, their detection areas are also relatively fixed. Therefore, based on the difference in the positions of the backscatter detection area and the transmission detection area, after obtaining the position of the vehicle cab in the backscatter detection area, the position of the cab relative to the transmission detection area can be determined.

[0056] In step 403, it is determined whether the cab has passed through the transmission detection area. If it is determined that the cab has passed through the transmission detection area, step 404 is executed; if it is determined that the cab has not passed through the transmission detection area, step 402 is executed to continue detecting the position of the cab relative to the transmission detection area.

[0057] In step 404, a ray generator of the transmission detector is turned on.

[0058] Through this method, on the basis of backscatter detection of the vehicle, the position of the vehicle cab relative to the transmission detection area can be determined according to the backscatter detection data. When the cab leaves the transmission detection area, the ray generator of the transmission detector is turned on, so that backscatter detection can be performed on the entire vehicle, avoiding transmission detection of the cab. At the same time, backscatter detection can be performed on the entire vehicle, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0059] In one embodiment, when it is determined based on the transmission detection data that the vehicle detection has been completed, the transmission detector is turned off, or only the ray generator of the transmission detector is turned off, thereby reducing the harm of X-rays to surrounding personnel on the one hand, and achieving energy saving on the other hand.

[0060] In one embodiment, after the transmission detection data and the backscatter detection data are obtained, the backscatter detection data can be used to implement the safety inspection of the vehicle as a whole, and the transmission detection data can be used to implement the safety inspection of the area other than the cab of the vehicle to obtain the security inspection result, thereby ensuring the safety of the cab personnel, and also implementing the security inspection of the cab, ensuring the thoroughness of the inspection. In one embodiment, when an abnormality is found, an alarm can also be triggered so that the staff can find the abnormality in time.

[0061] A schematic diagram of an embodiment of the vehicle security inspection controller of the present application. The target position determination unit 501 can determine the position of the cab relative to the backscatter detection area when the cab of the vehicle passes through the transmission detection area based on the difference in the positions of the backscatter detection area and the transmission detection area, and record it as the target position. The cab position determination unit 502 can obtain the position of the vehicle cab in the transmission detection area and compare it with the target position. The start unit 503 can turn on the ray generator of the transmission detector when the cab position determination unit 502 determines that the cab has reached the target position.

[0062] Such a controller can determine the position of the vehicle cab relative to the transmission detection area based on the backscatter detection data, and then trigger the ray generator of the transmission detector to work, without the need for additional sensors to trigger, reducing system costs and facilitating system deployment.

[0063] The structural diagram of an embodiment of the vehicle security inspection controller of the present application is as follows Figure 6 As shown. The vehicle security inspection controller includes a memory 610 and a processor 620. Among them: the memory 610 can be a disk, a flash memory or any other non-volatile storage medium. The memory is used to store the instructions in the corresponding embodiment of the vehicle security inspection method described above. The processor 620 is coupled to the memory 610 and can be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 620 is used to execute the instructions stored in the memory, and can realize the scheduling of backscatter detectors and transmission detectors to cooperate with each other to perform vehicle safety inspections, thereby improving the security inspection effect while ensuring the safety of the cab occupants.

[0064] In one embodiment, it is also possible to Figure 7As shown, the vehicle security inspection controller 700 includes a memory 710 and a processor 720. The processor 720 is coupled to the memory 710 via a BUS bus 730. The vehicle security inspection controller 700 can also be connected to an external storage device 750 via a storage interface 740 to call external data, and can also be connected to a network or another computer system (not shown) via a network interface 760.

[0065] In this embodiment, by storing data instructions in a memory and processing the instructions through a processor, it is possible to schedule backscatter detectors and transmission detectors to cooperate with each other to perform vehicle safety inspections, thereby improving the security inspection effect while ensuring the safety of cab occupants.

[0066] In another embodiment, a computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the steps of the method in the corresponding embodiment of the vehicle security inspection method. It should be understood by those skilled in the art that the embodiments of the present application may be provided as methods, devices, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0067] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of the processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0068] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0069] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0070] So far, the present application has been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0071] The method and apparatus of the present application may be implemented in many ways. For example, the method and apparatus of the present application may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present application are not limited to the order specifically described above, unless otherwise specifically stated. In addition, in some embodiments, the present application may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present application. Therefore, the present application also covers a recording medium storing a program for executing the method according to the present application.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present application, which should be included in the scope of the technical solution for protection in the present application.

Claims

1. A vehicle security inspection system, characterized in that: include: A backscatter detector for performing backscatter detection on a vehicle to be tested; A transmission detector for performing transmission detection on the vehicle to be tested; and, Controller; Among them, the transmission detection area is located behind the backscatter detection area along the vehicle's traveling direction. The backscatter detector remains in a normally open state and performs backscatter detection on the entire vehicle. The controller turns on the ray generator of the transmission detector after determining that the cab of the vehicle to be tested has passed through the transmission detection area based on the backscatter detection data.

2. The system according to claim 1, characterized in that The controller determines that the cab passes through the transmission detection area according to a difference between the positions of the backscatter detection area and the transmission detection area, and a position of the cab relative to the backscatter detection area.

3. The system according to claim 2, characterized in that The controller comprises: a target position determination unit, configured to determine, according to the positions of the backscatter detection area and the transmission detection area, a target position of the cab relative to the backscatter detection area after the cab passes through the transmission detection area; a cab position determination unit, configured to determine the position of the cab relative to the backscatter detection area according to the backscatter detection data; A starting unit is used for the controller to start the ray generator of the transmission detector when the cab reaches the target position.

4. The system according to claim 3, characterized in that The cab position determination unit determines the position of the cab relative to the backscatter detection area through image processing.

5. The system according to any one of claims 1 to 4, characterized in that: The transmission detection area is connected to the backscatter detection area; When the controller determines, based on the backscatter detection data, that the cab has completely entered the backscatter detection area, the controller turns on the ray generator of the transmission detector.

6. The system according to any one of claims 1 to 4, characterized in that: The transmission detection area overlaps with the backscatter detection area; The controller turns on the ray generator of the transmission detector when determining, based on the backscatter detection data, that the cab leaves the transmission detection area.

7. The system according to any one of claims 1 to 4, characterized in that: The backscatter detector is located at one or more of the side, bottom, and top of the passage through which the vehicle to be tested passes.

8. The system according to any one of claims 1 to 4, characterized in that: The controller is also used to turn off the ray generator of the transmission detector after the vehicle completely passes through the transmission detection area.

9. The system according to any one of claims 1 to 4, characterized in that: The controller is also used to generate vehicle security inspection information according to the backscatter detection data and the transmission detection data.

10. A vehicle security inspection method, characterized in that: include: Acquire backscatter detection data of the vehicle to be tested, wherein the backscatter detector is kept in a normally open state and backscatter detection is performed on the entire vehicle; The position of the cab of the vehicle to be tested relative to the transmission detection area is determined according to the backscatter detection data, and when it is determined that the cab passes through the transmission detection area, the ray generator of the transmission detector is turned on, Wherein, the transmission detection area is located behind the backscatter detection area along the traveling direction of the vehicle.

11. The method according to claim 10, characterized in that Determining the position of the cab of the vehicle to be tested relative to the transmission detection area according to the backscatter detection data comprises: The position of the cab relative to the transmission detection area is determined according to the difference between the positions of the backscatter detection area and the transmission detection area, and the position of the cab relative to the backscatter detection area.

12. The method according to claim 10, characterized in that The step of determining the position of the cab of the vehicle to be tested relative to the transmission detection area according to the backscatter detection data, and turning on the ray generator of the transmission detector after determining that the cab passes through the transmission detection area comprises: Determining, according to the positions of the backscatter detection area and the transmission detection area, a target position of the cab of the vehicle to be tested relative to the backscatter detection area after the cab passes through the transmission detection area; determining the position of the cab relative to the backscatter detection area according to the backscatter detection data; When it is determined according to the backscatter detection data that the cab has reached the target position, the ray generator of the transmission detector is turned on.

13. The method according to claim 12, characterized in that The position of the cab relative to the backscatter detection area is determined by image processing according to the backscatter detection data.

14. The method according to any one of claims 10 to 13, characterized in that: Also includes: When it is determined that the vehicle to be detected has passed through the transmission detection area, the ray generator of the transmission detector is turned off.

15. The method according to any one of claims 10 to 13, characterized in that: Also includes: Vehicle security inspection information is generated according to the backscatter detection data and the transmission detection data.

16. A vehicle security inspection controller, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute the method according to any one of claims 10 to 15 based on instructions stored in the memory.

17. A computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the steps of the method according to any one of claims 10 to 15.

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