CN114690257A

CN114690257A - Vehicle safety inspection system and safety inspection method

Info

Publication number: CN114690257A
Application number: CN202011643568.7A
Authority: CN
Inventors: 许艳伟; 孙尚民; 宗春光; 胡煜; 马媛
Original assignee: Nuctech Co Ltd
Current assignee: Nuctech Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-01

Abstract

A vehicle safety inspection system and a safety inspection method are provided. The vehicle safety inspection system includes: a scanning device installed in the inspection area to scan the detected vehicle; an imaging device that acquires a real image of a side portion of a vehicle entering an inspection area; the identification module is suitable for identifying the real object image and determining a preset part and a rear end part of the vehicle according to the identified real object image; a calculation module that calculates a length of a trunk of the vehicle based on the determined predetermined portion and the rear end portion; a position sensor to detect a real-time position of the vehicle in the inspection area; and the controller is suitable for controlling the scanning device to scan and check the trunk under the condition that the front end of the trunk of the vehicle enters the scanning area of the scanning device according to the length and the real-time position of the trunk. The scanning device emits the radiation beam only during the process of checking the trunk, and the driver and other passengers on the vehicle are protected from the radiation beam.

Description

Vehicle safety inspection system and safety inspection method

Technical Field

Embodiments of the present disclosure relate to a vehicle security inspection system, and more particularly, to a vehicle security inspection system suitable for performing security inspection on a trunk of a vehicle, and a security inspection method for inspecting a vehicle using the vehicle security inspection system.

Background

At present, people increasingly select private cars such as cars for going out. Generally, luggage articles are subjected to security inspection when a traditional public transport means is selected for going out, but due to the fact that the security inspection is difficult to operate when a private car such as a car is used for going out, the security inspection of each car is not completely implemented, and therefore great potential safety hazards exist. In particular, when a car enters public security, justice, prison, customs, frontier inspection, drug enforcement, airports, important government agencies, important security agencies, military bases, reception halls, important character residential passageways, important conference halls, etc., the inspection of the car for whether non-passenger areas (such as front and trunk boxes invisible from the outside) are concealed with contraband such as drugs, smuggled articles, control tools, guns, flammable and explosive articles has received increasing attention.

Current security inspection of vehicles involves manual observation, which is inefficient and not prone to the discovery of hidden contraband. The discharge reliability of police dogs or odor extraction devices to explosive devices and some explosives is also not high.

A small vehicle security inspection system has been developed, in which a vehicle is parked, a person gets off the vehicle, and then a car is moved by an X-ray device from front to back to perform inspection imaging. The detection mode is that the X-ray inspection device is operated by manual control, whether contraband articles are contained in the vehicle or not is subjectively judged by human eyes, human factors exist, the working efficiency is low, the missing report exists, the toll stations or intersections with large traffic flow are easy to arrange in long queues for waiting for detection, and the traffic efficiency is obviously reduced.

Disclosure of Invention

An object of the present disclosure is to solve at least one aspect of the above problems and disadvantages in the related art.

According to an embodiment of an aspect of the present disclosure, there is provided a vehicle safety inspection system including: the scanning device is arranged in the inspection area and is suitable for scanning the detected vehicle; an imaging device adapted to acquire a real image of a side portion of a vehicle entering the inspection area; the identification module is suitable for identifying the real object image and determining a preset part and a rear end part of the vehicle according to the identified real object image; a calculation module adapted to calculate a length of a trunk of the vehicle from the determined predetermined location and rear end portion; a position sensor adapted to detect a real-time position of the vehicle in the inspection area; and the controller is suitable for controlling the scanning device to scan and check the trunk under the condition that the front end of the trunk of the vehicle enters the scanning area of the scanning device according to the length and the real-time position of the trunk.

According to an embodiment of the disclosure, the controller is further adapted to control the scanning device to stop the scanning inspection in case it is determined from the real-time position that the rear end portion of the vehicle leaves the scanning area of the scanning device.

According to an embodiment of the present disclosure, the vehicle safety inspection system further includes a composition module, adapted to composition a plurality of sub-object images of the vehicle at different positions of the inspection area, acquired by the imaging device, to obtain the object image.

According to an embodiment of the present disclosure, the predetermined portion includes at least two of a rear wheel, a rear door, a handle of the rear door, and a rear edge of the roof.

According to one embodiment of the present disclosure, the identification module determines an approximate contour of the trunk based on the predetermined location and a rear end portion of the vehicle, and the calculation module determines a length of the trunk based on the approximate contour.

According to one embodiment of the disclosure, the calculation module obtains the length of the trunk by multiplying respective correction coefficients by distances between any one of a front edge of the rear wheel, a rear edge of a rear door, a rear end of a handle of the rear door, and a rear edge of a roof and a rear end portion of the vehicle.

According to an embodiment of the present disclosure, the position sensor includes a laser sensor.

According to one embodiment of the present disclosure, the laser sensor determines the real-time position of the vehicle in the inspection area by scanning a front end or a rear end of the vehicle.

According to an embodiment of the present disclosure, the vehicle safety inspection system further includes an auxiliary sensor, and the imaging device starts to operate according to a state in which the auxiliary sensor is triggered.

According to an embodiment of the present disclosure, one of the imaging device and the position sensor is further adapted to measure a traveling speed of the vehicle, and the controller controls a scanning frequency of the scanning apparatus according to the traveling speed.

According to an embodiment of the present disclosure, one of the imaging device and the position sensor is further adapted to measure a traveling speed of the vehicle, and the controller controls the scanning image formed by the scanning device to be scaled according to the traveling speed.

According to an embodiment of the present disclosure, a scanning apparatus includes: two upright frames oppositely disposed on both sides of the examination region; and a radiation source and an array detector respectively arranged on the two upright frames.

According to an embodiment of the present disclosure, the scanning apparatus further includes two shielding walls respectively disposed on the upright frames to shield radiation from the radiation source.

According to an embodiment of another aspect of the present disclosure, there is provided a safety inspection method for inspecting a vehicle using the above vehicle safety inspection system, including the steps of:

acquiring a real object image of a side portion of a vehicle entering an inspection area;

recognizing the real object image, and determining a preset part and a rear end part of the vehicle according to the recognized real object image;

calculating a length of a trunk of the vehicle based on the determined predetermined portion and the rear end portion;

detecting a real-time location of the vehicle in the inspection area; and

and under the condition that the front end of the trunk of the vehicle enters a scanning area of the scanning device according to the length and the real-time position of the trunk, controlling the scanning device to scan and check the trunk.

According to an embodiment of the present disclosure, in a case where it is determined that the rear end portion of the vehicle is away from the scanning area of the scanning device according to the real-time position, the scanning device is controlled to stop the scanning inspection.

According to an embodiment of the present disclosure, the step of acquiring a real object image of a side portion of a vehicle entering the inspection area includes: and compounding a plurality of sub-object images of the vehicle at different positions of the inspection area acquired by the imaging equipment to obtain the object image.

According to an embodiment of the present disclosure, an approximate contour of the trunk is determined according to the predetermined portion and a rear end portion of the vehicle, and a length of the trunk is determined according to the approximate contour.

According to an embodiment of the present disclosure, the length of the trunk is obtained by multiplying a distance between any one of a front edge of the rear wheel, a rear edge of the rear door, a rear end of a handle of the rear door, and a rear edge of a roof and a rear end portion of the vehicle by respective correction coefficients.

Drawings

FIG. 1 illustrates a schematic diagram of a vehicle safety inspection system of an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a perspective schematic view of a scanning device of a vehicle safety inspection system of an exemplary embodiment of the present disclosure;

FIG. 3 shows a perspective view of a vehicle to be inspected;

FIG. 4 shows a schematic diagram of a vehicle safety inspection system of another exemplary embodiment of the present disclosure; and

fig. 5 shows a block diagram of a security check method of an exemplary embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without any inventive step, are intended to be within the scope of the present disclosure.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are based on the traveling direction of the vehicle, only for the convenience of describing and simplifying the present disclosure, and in the case of not being explained to the contrary, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present disclosure; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

In the description of the present disclosure, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for convenience of distinguishing the corresponding components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present disclosure.

According to a general inventive concept of the present disclosure, there is provided a vehicle safety inspection system including: the scanning device is arranged in the inspection area and is suitable for scanning the detected vehicle; an imaging device adapted to acquire a real image of a side portion of a vehicle entering the inspection area; the identification module is suitable for identifying the real object image and determining a preset part and a rear end part of the vehicle according to the identified real object image; a calculation module adapted to calculate a length of a trunk of the vehicle from the determined predetermined location and rear end portion; a position sensor adapted to detect a real-time position of the vehicle in the inspection area; and the controller is suitable for controlling the scanning device to scan and check the trunk under the condition that the front end of the trunk of the vehicle enters the scanning area of the scanning device according to the length and the real-time position of the trunk.

According to another general inventive concept of the present disclosure, there is provided a safety inspection method of an inspection vehicle trunk of the above vehicle safety inspection system, including the steps of: acquiring a real object image of a side portion of a vehicle entering an inspection area; recognizing the real object image, and determining a preset part and a rear end part of the vehicle according to the recognized real object image; calculating a length of a trunk of the vehicle based on the determined predetermined portion and the rear end portion; detecting a real-time location of the vehicle in the inspection area; and controlling the scanning device to scan and check the trunk under the condition that the front end of the trunk of the vehicle enters a scanning area of the scanning device according to the length and the real-time position of the trunk.

FIG. 1 illustrates a schematic diagram of a vehicle safety inspection system of an exemplary embodiment of the present disclosure; FIG. 2 illustrates a perspective schematic view of a scanning device of a vehicle safety check system of an exemplary embodiment of the present disclosure; fig. 3 shows a perspective view of a vehicle to be examined.

The vehicle safety inspection system according to the embodiment of the present disclosure is suitable for performing quick and safe inspection on the trunk of a vehicle such as a family car. Through security inspection, the presence of contraband such as drugs, explosives, control tools, guns, etc. in the trunk of the vehicle can be discovered. Referring to fig. 3, a vehicle 100 includes a front end 101, a rear end 102, front wheels 103, rear wheels 104, a trunk 105, a rear door 107, a rear door handle 108, and a roof 109, with the trunk 105 having a front end 106.

According to an exemplary embodiment of the present disclosure, as shown in fig. 1 to 3, there is provided a vehicle safety inspection system including: a scanning device 1 installed in the inspection area 200 and adapted to scan a vehicle to be inspected; an imaging device 2 adapted to acquire a real object image of a side portion of the vehicle 100 entering the inspection area 200; an identification module adapted to identify the real object image and to determine a predetermined portion of the vehicle 100 and the rear end portion 102 from the identified real object image; a calculation module adapted to calculate the length of a trunk 105 of said vehicle 100 from said determined predetermined location and rear end portion 102; a position sensor 3 adapted to detect a real-time position of the vehicle 100 in the examination area 200; and a controller adapted to control the scanning apparatus 1 to scan and inspect the trunk 105 in a case where it is determined that the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning apparatus 1 based on the length L3 and the real-time position of the trunk 105.

According to the vehicle safety inspection system of the embodiment of the present disclosure, the controller controls the scanning device 1 to scan and inspect the trunk 105 in the case where the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning device as determined from the length L3 of the trunk 105 calculated by the calculation module and the real-time position of the vehicle 100 measured by the position sensor 3. In this way, the scanner device 1 can perform the security check only on the trunk 105 of the vehicle 100, and can realize the scan check on the vehicle without getting off the vehicle by the driver and the passenger of the vehicle 100 and without stopping the vehicle from running.

According to an exemplary embodiment of the present disclosure, as shown in fig. 1-3, the controller is further adapted to control the scanning device 1 to stop the scanning inspection in case it is determined that the rear end portion 102 of the vehicle 100 leaves the scanning area 16 of the scanning device 1 according to the real-time position of the vehicle 100, in order to be ready for the next security inspection operation.

In an exemplary embodiment, the imaging device 2 forms a real object image of the side portion of the vehicle 100 based on the video stream. The imaging device 2 includes an area camera, an area laser scanner, a multi-line laser sensor, or a line camera. The vehicle security inspection system further comprises a composition module adapted to compose a plurality of sub-physical images of the vehicle 100 acquired by the imaging device 2 at different positions of the inspection area 200 to obtain the physical image. Since there may be a case where a plurality of sub-real object images of the side portion of the vehicle 100 acquired by the imaging device 2 are partially blurred, or a case where the wheel is distorted, for example, not completely circular, the sub-real object images acquired at different positions of the vehicle at different times are combined, and the acquired final real object image more clearly and accurately reflects the structure of the side portion of the vehicle, so that the recognition module can accurately recognize the predetermined portion of the side portion of the vehicle.

In an exemplary embodiment, the predetermined locations include at least two of the rear wheels 104, the rear door 107, the handle 108 of the rear door, and the rear edge of the roof 109 of the vehicle 100. These predetermined portions are located in the vicinity of the trunk 105 of the vehicle 100, and the position of the trunk 105 can be roughly determined based on these predetermined portions.

In an exemplary embodiment, the identification module determines an approximate contour of the trunk 105 based on the predetermined location and the rear end 102 of the vehicle, and the calculation module determines the length L3 of the trunk 105 based on the approximate contour.

In an alternative embodiment, the calculation module obtains the length L3 of the trunk 105 based on the distance between any one of the front edge of the rear wheel 104, the rear edge of the rear door 107, the rear end of the handle 108 of the rear door, and the rear edge of the roof 109 and the rear end 102 of the vehicle 100 multiplied by a respective correction factor K. For example, if the length L3 of trunk 105 is calculated based on the front edge of rear wheel 104, K is 0.5-0.6; if the length L3 of trunk 105 is calculated based on the rear edge of rear wheel 104, K is 1.0-1.1; if the length L3 of the trunk 105 is calculated based on the rear end of the handle 108 of the rear door or the rear edge of the rear door 107, K is 0.4-0.5. In the case where the vehicle 100 is identified as a three-phase sedan, if the length L3 of the trunk 105 is calculated based on the rear edge of the roof 109, K is 0.6-0.7.

In an exemplary embodiment, the position sensor 3 may be a laser sensor with a laser source, such as an area laser scanner or a multiline laser sensor. A laser sensor generally comprises a transmitter adapted to emit a laser beam towards an object, such as a vehicle, and a receiver adapted to receive laser light reflected from the object. The laser sensor can directly acquire information such as distance, angle, reflection intensity, speed and the like of a target by detecting an echo signal of the emitted laser, and a multi-dimensional image of the target is generated. For example, the singlet lidar may calculate the distance between the singlet lidar and the target by measuring the round trip time of the lasing signal and the laser echo signal.

In an exemplary embodiment, the laser sensor determines the real-time position of the vehicle 100 in the inspection area 200 by a computing module by scanning the front end 101 or the rear end 102 of the vehicle 100 and sending the determined real-time position to a controller.

An example of scanning the rear end portion 102 of the vehicle 100 to acquire the position of the vehicle 100 is explained below with reference to fig. 1. In the illustrated embodiment of fig. 1, the position sensor 3 is arranged outside the examination area and upstream of the scanning device 1 in the direction of travel F of the vehicle. In an alternative embodiment, the position sensor may be mounted in the upper part of the examination zone by means of a support frame. The position sensor 3 emits a laser beam 31 toward the vehicle 100, and the laser beam 31 is reflected back to the position sensor 3 after being irradiated to the vehicle. As previously described, the calculation module has obtained the trunk length L3 of the vehicle. In addition, the distance L1 between the position sensor 3 and the scanning device 1 is predetermined and constant. During the travel of the vehicle 100 in the examination area 200 in the travel direction F (fig. 2), the position sensor 3, by scanning the rear end 102 of the vehicle 100, can measure the real-time distance L2 in the travel direction between the rear end 102 of the vehicle and the position sensor 3 in real time, i.e. obtain the real-time position of the vehicle in the examination area in real time. It will be appreciated that the real-time distance L5 between the rear end 102 of the vehicle 100 and the scanning apparatus 1 is:

L5＝L1-L2

during the travel of the vehicle 100 upstream of the scanning device 1 in the travel direction F toward the scanning device 1, the real-time distance L2 between the rear end 102 of the vehicle and the position sensor 3 gradually increases and decreases between L5, and when L5 equals L3, it indicates that the front end 106 of the trunk 105 of the vehicle 100 is about to enter the scanning area 16 of the scanning device 1. In this case, the controller determines that the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning apparatus, and controls the scanning apparatus 1 to scan-check the trunk 105.

If L5 is 0 as the vehicle travels, indicating that the rear end 102 of the vehicle 100 is about to leave the scanning area 16 of the scanning device 1, the controller controls the scanning device 1 to stop scanning inspection to avoid scanning radiation to the driver of the next vehicle. It is understood that, in the case where the position sensor 3 is provided upstream of the scanning device 1 and the position of the vehicle is determined based on the rear end portion 102 of the vehicle 100, the distance L1 between the position sensor 3 and the scanning device 1 should be set larger than the body length L4 of the vehicle, for example, L1 is 5 to 8 meters.

Fig. 4 shows a schematic diagram of a vehicle safety inspection system of another exemplary embodiment of the present disclosure.

In the embodiment of fig. 4, the position sensor 3 is arranged outside the examination area in the direction of travel F of the vehicle and downstream of the scanning device 1 in the direction of travel F of the vehicle, so that the position sensor 3 is adapted to determining the real-time distance L2' between the front end 101 of the vehicle and the position sensor 3.

An example in which the front end portion 101 of the vehicle 100 is scanned to acquire the position of the vehicle 100 is explained below with reference to fig. 4. The position sensor 3 emits a laser beam 31 toward the vehicle 100, and the laser beam 31 is reflected back to the position sensor 3 after being irradiated to the vehicle. As previously described, the calculation module has obtained the trunk length L3 of the vehicle. In addition, the distance L1' between the position sensor 3 and the scanning device 1 is predetermined and constant. During the travel of the vehicle 100 in the examination area 200 in the travel direction F, the position sensor 3, by scanning the front end 101 of the vehicle 100, can measure the real-time distance L2' of the front end 101 of the vehicle from the position sensor 3 in real time, i.e. obtain the real-time position of the vehicle in the examination area in real time. It will be appreciated that the real-time distance L5' between the rear end 102 of the vehicle 100 and the scanning apparatus 1 is:

L5’＝(L2’+L4)-L1’

while the vehicle 100 is traveling in the traveling direction F toward the scanning device 1 upstream of the scanning device 1, the real-time distance L2 ' between the front end 101 of the vehicle and the position sensor 3 gradually decreases, the vehicle body length L4 and the distance L1 ' between the position sensor 3 and the scanning device 1 do not change, and when L5 ' is equal to L3, it is indicated that the front end 106 of the trunk 105 of the vehicle 100 is about to enter the scanning area 16 of the scanning device 1. In this case, the controller determines that the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning apparatus, and controls the scanning apparatus 1 to scan-check the trunk 105.

If L5' is 0 as the vehicle travels, indicating that the rear end 102 of the vehicle 100 is about to leave the scanning area 16 of the scanning device 1, the controller controls the scanning device 1 to stop scanning inspection to avoid scanning radiation to the driver of the next vehicle. It is understood that, in the case where the position sensor 3 is provided downstream of the scanning device 1 and the position of the vehicle is determined based on the front end portion 101 of the vehicle 100, the distance L1' between the position sensor 3 and the scanning device 1 should be set larger than the vehicle body length L4 of the vehicle.

Although the embodiment in which the position sensor 3 controls the scanner apparatus 1 to inspect the trunk 105 by measuring the positions of the rear end portion 102 and the front end portion 101 of the vehicle has been described above, the embodiment of the present disclosure is not limited thereto. In an alternative embodiment, the position of the front wheel 103 or the rear wheel 104 may be measured by using the position sensor 3, so that the controller determines the real-time position of the vehicle in the inspection area and thus controls the timing of the inspection by the scanning apparatus 1.

In an exemplary embodiment, as shown in fig. 1, the vehicle safety inspection system further includes an auxiliary sensor 4, and the position sensor 3 and the imaging device 2 start operating according to a state in which the auxiliary sensor 4 is triggered. For example, the auxiliary sensor 4 includes a light curtain switch, a ground coil, or the like, which can sense that the vehicle reaches a specific area.

In an exemplary embodiment, one of the imaging device 2 and the position sensor 3 is further adapted to measure a traveling speed of the vehicle 100, and the controller controls the scanning frequency of the scanning apparatus 1 according to the traveling speed. In this way, the scanning frequency of the scanner device 1 can be ensured to correspond to the traveling speed of the vehicle, and a stable scanned image can be obtained.

In an exemplary embodiment, one of the imaging device 2 and the position sensor 3 is further adapted to measure a traveling speed of the vehicle 100, and the controller controls the scanning image formed by the scanning apparatus 1 to be scaled according to the traveling speed. The position sensor 3 is mounted on the support bracket 32 such that the height of the position sensor 3 is approximately the same as the height of the vehicle 10 at which the front end portion 101 or the rear end portion 102 is obtained.

In an exemplary embodiment, referring to fig. 2, the scanning device 1 comprises: two upright frames 11 oppositely disposed on both sides of the examination region 200; and a radiation source 13 and an array detector 14, respectively, arranged on two upright frames 11. Further, the scanning device 1 further comprises a cross beam 12 disposed on the upright frame 11. The imaging device 2 may be mounted outside the examination region 200 using a support frame 21, and the height of the imaging device 2 is in the range of about 1-1.5 meters from the ground.

In an exemplary embodiment, the scanning device 1 further comprises two shielding walls 15, respectively disposed on the upright frame 1, for shielding radiation from the radiation source.

Fig. 5 shows a block diagram of a security check method of an exemplary embodiment of the present disclosure. .

According to an embodiment of another aspect of the present disclosure, there is provided a safety inspection method for inspecting a trunk of a vehicle by using the vehicle safety inspection system described in any one of the above embodiments, including the steps of: step S100 of acquiring a real image of a side portion of the vehicle 100 entering the inspection area 200 by the imaging device 2; step S200, identifying the real object image through an identification module, and determining a preset part and a rear end part 102 of the vehicle 100 according to the identified real object image; step S300, calculating the length L3 of a trunk of the vehicle according to the determined preset position and the rear end part 102 through a calculation module; step S400 of detecting a real-time position of the vehicle 100 in the inspection area 200 by a position sensor 3; in steps S500 and S600, the controller controls the scanning device 1 to scan and check the trunk when it is determined that the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning device 1 according to the length L3 and the real-time position of the trunk 102.

In detail, in step S500, the controller determines whether or not the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning apparatus 1, based on the length L3 and the real-time position of the trunk 102; if the controller determines that the front end 106 of the trunk 105 of the vehicle 100 has entered the scanning area 16, step S600 is executed, in which the controller controls the scanning device 1 to perform a scanning check on the trunk 105; if the controller determines that the front end 106 of the trunk 105 of the vehicle 100 does not enter the scanning area 16, the operation flow returns to step S400.

According to the safety inspection method of the embodiment of the disclosure, the controller controls the scanning device 1 to scan and inspect the trunk 105 in the case where it is determined that the front end 106 of the trunk 105 of the vehicle 100 enters the scanning area 16 of the scanning device according to the length L3 of the trunk 102 and the real-time position of the vehicle 100 measured by the position sensor 3. In this way, the scanner device 1 can perform the security check only on the trunk 105 of the vehicle 100, and can perform the scan check on the vehicle without driving the vehicle 100 by the driver or the passenger and without stopping the vehicle.

In one embodiment, referring to fig. 1, in case that it is determined that the rear end 105 of the vehicle 100 leaves the scanning area 16 of the scanning device 1 according to the real-time position, the controller controls the scanning device 1 to stop the scanning inspection to be ready for the next security inspection operation.

In one embodiment, the step of acquiring a real world image of a side of the vehicle 100 entering the inspection area 200 comprises: and compounding a plurality of sub-object images of the vehicle at different positions of the inspection area 200 acquired by the imaging device 2 to obtain the object image. The sub-object images acquired at different time and different positions of the vehicle are compounded, and the acquired final object image can more clearly and accurately reflect the structure of the side part of the vehicle, so that the identification module can accurately identify the preset part of the side part of the vehicle.

In an exemplary embodiment, the calculation module determines the length L3 of the trunk 105 from the approximate contour by determining an approximate contour of the trunk 105 from the predetermined location and the rear end 102 of the vehicle via an identification module.

According to the vehicle buffer board security inspection system and the security inspection method of the embodiment of the disclosure, security inspection can be performed on vehicles which are about to enter public security, justice, prison, customs, frontier, airport, important government and government agencies, important security agencies, military bases, reception halls, important character residence passages, important meeting halls and the like, and under the condition that the vehicles do not stop running and drivers get off, the trunk of the vehicles is inspected to check whether contraband such as drugs, smuggling articles, control tools, guns and flammable and explosive articles are hidden in the trunk. The scanning device only emits the radiation beam in the process of checking and checking the trunk, so that the driver and other passengers on the vehicle are avoided, the driver and other passengers on the vehicle are prevented from being radiated by the radiation beam, and the safety is improved.

According to the vehicle buffer board security inspection system and the security inspection method, the area array camera can be used for accurately identifying the profile of the side part of the vehicle, the length of the trunk can be effectively identified, corresponding scanning is carried out according to different trunk lengths, and the completeness and accuracy of scanning are guaranteed; the compound module effectively compounds a plurality of sub-object images acquired by the imaging device at different positions, obtains a final object image, and can accurately determine the length of the trunk. The position of the vehicle is determined by using the position sensor, the vehicle is easy to install in practical application, the cost is low, the strict inclination angle of the position sensor in an installation procedure is not emphasized, and only the condition that the laser can be reflected back to the position sensor is ensured; the position sensor can continuously detect, accurately position and measure the speed of the vehicle and the like, and can judge the motion direction of the object.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

While the present disclosure has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of the preferred embodiments of the disclosure, and should not be construed as limiting the disclosure. Although a few embodiments of the disclosed inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims

1. A vehicle safety inspection system, comprising:

a scanning device (1) mounted in an examination area (200) and adapted to scan a vehicle under inspection;

an imaging device (2) adapted to acquire a real image of a side portion of a vehicle entering the inspection area;

an identification module adapted to identify the real object image and determine a predetermined portion and a rear end portion (102) of the vehicle from the identified real object image;

a calculation module adapted to calculate a length of a trunk of the vehicle from the determined predetermined location and rear end portion;

a position sensor (3) adapted to detect a real-time position of the vehicle in the inspection area; and

and the controller is suitable for controlling the scanning device to scan and check the trunk under the condition that the front end of the trunk of the vehicle enters the scanning area of the scanning device according to the length and the real-time position of the trunk.

2. The vehicle safety inspection system of claim 1, wherein the controller is further adapted to control the scanning device to stop scanning inspection if it is determined from the real-time position that the rear end portion of the vehicle is away from a scanning area of the scanning device.

3. The vehicle safety inspection system of claim 1 or 2, further comprising a composition module adapted to composition a plurality of sub-physical images of the vehicle at different locations of the inspection area acquired by the imaging device to obtain the physical image.

4. The vehicle safety inspection system according to any one of claims 1 to 3, wherein the predetermined location includes at least two of a rear wheel (104), a rear door (107), a handle (108) of the rear door, and a rear edge of a roof (109).

5. The vehicle safety inspection system of claim 4, wherein the identification module determines an approximate contour of the trunk based on the predetermined location and a rear end of the vehicle,

the calculation module determines a length of the trunk from the approximate contour.

6. The vehicle safety inspection system according to claim 4, wherein the calculation module obtains the length of the trunk based on a distance between any one of a front edge of the rear wheel (104), a rear edge of a rear door (107), a rear end of a handle (108) and a rear edge of a roof (109) of the rear door, and a rear end of the vehicle multiplied by respective correction coefficients.

7. The vehicle safety inspection system of any one of claims 1-6, wherein the position sensor comprises a laser sensor.

8. The vehicle safety inspection system of claim 7, wherein the laser sensor determines the real-time location of the vehicle in the inspection area by scanning a front end or a rear end of the vehicle.

9. The vehicle safety inspection system according to any one of claims 1-8, further comprising an auxiliary sensor (4), the imaging device starting to operate according to a state in which the auxiliary sensor is triggered.

10. The vehicle safety inspection system of any one of claims 1-9, wherein one of the imaging device and position sensor is further adapted to measure a travel speed of the vehicle,

the controller controls the scanning frequency of the scanning device according to the running speed.

11. The vehicle safety inspection system of any one of claims 1-9, wherein one of the imaging device and position sensor is further adapted to measure a travel speed of the vehicle,

and the controller controls the scanning image formed by the scanning device to carry out proportion adjustment according to the running speed.

12. The vehicle safety inspection system according to any one of claims 1 to 11, wherein the scanning device includes:

two upright frames (11) oppositely arranged on both sides of the examination zone; and

a radiation source (13) and an array detector (14) respectively arranged on the two upright frames.

13. The vehicle safety inspection system according to claim 12, wherein the scanning device further includes two shielding walls (15) respectively provided on the upright frames to shield the radiation from the radiation source.

14. A safety inspection method for inspecting a vehicle using the vehicle safety inspection system according to any one of claims 1 to 13, comprising the steps of:

identifying the real object image and determining a predetermined part and a rear end part (102) of the vehicle according to the identified real object image;

detecting a real-time location of the vehicle in the inspection area; and

15. The safety inspection method according to claim 14, wherein the scanning device is controlled to stop the scanning inspection in a case where it is determined that the rear end portion of the vehicle is away from a scanning area of the scanning device from the real-time position.

16. The security inspection method according to claim 14 or 15, wherein the step of acquiring a real object image of a side portion of a vehicle entering the inspection area includes:

and compounding a plurality of sub-object images of the vehicle at different positions of the inspection area acquired by the imaging equipment to obtain the object image.

17. The security inspection method according to any one of claims 14 to 16, wherein the predetermined portion includes at least two of a rear wheel (104), a rear door (107), a handle (108) of the rear door, and a rear edge of a roof (109).

18. The safety inspection method according to claim 17, wherein an approximate outline of the trunk is determined based on the predetermined portion and a rear end portion of the vehicle,

determining a length of the trunk from the approximate contour.

19. The security inspection method according to claim 17, wherein the length of the trunk is obtained by multiplying a distance between any one of a front edge of the rear wheel (104), a rear edge of a rear door (107), a rear end of a handle (108) of the rear door, and a rear edge of a roof (109), and a rear end portion of the vehicle by respective correction coefficients.