CN214375317U

CN214375317U - Security check equipment

Info

Publication number: CN214375317U
Application number: CN201822269101.5U
Authority: CN
Inventors: 李营; 马媛; 宋涛; 孟辉; 李荐民; 李元景; 陈志强; 李玉兰; 张丽
Original assignee: Tsinghua University; Nuctech Co Ltd
Current assignee: Tsinghua University; Nuctech Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2021-10-08
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses a safety inspection equipment for vehicle that removes. The security device includes at least one carriage defining an inspection channel extending in a first direction, wherein the at least one carriage includes a first carriage for vertical scanning. The first support comprises a vertical view angle scanning device comprising a first X-ray accelerator disposed at a top side support portion of the first support, an opening angle of the first X-ray accelerator being between 69 and 120 degrees.

Description

Security check equipment

Technical Field

The utility model relates to a security check technical field, in particular to security check equipment.

Background

At present, security inspection equipment is more and more widely applied to occasions such as customs, and container vehicles leave the customs after needing to be quickly inspected. However, the container vehicle is bulky as a whole, and thus the corresponding equipment is bulky.

There is a need for a security device that can enable a vehicle to pass through the security device quickly, and that can be operated fully automatically, and that has a reduced volume.

SUMMERY OF THE UTILITY MODEL

The utility model provides a security check equipment, it can allow the vehicle of removal to pass through the inspection passageway that security check equipment provided fast to security check equipment realizes full automatic check, and has less volume.

According to one aspect of the present invention, there is provided a security device for a moving vehicle, comprising at least one bracket defining an inspection channel extending in a first direction, wherein the at least one bracket comprises a first bracket for vertical scanning; wherein

A first gantry configured to define a portion of the inspection tunnel for the moving vehicle to pass through the inspection tunnel, and the first gantry including a vertical view angle scanning device including a first X-ray accelerator disposed at a top gantry portion of the first gantry, and the first X-ray accelerator configured to emit X-rays downwardly toward the portion of the inspection tunnel defined by the first gantry to conduct an inspection of the moving vehicle in the inspection tunnel; wherein the opening angle of the first X-ray accelerator is between 69 and 120 degrees.

According to one aspect of the present invention, the at least one stand further comprises a second stand for horizontal scanning, the second stand being aligned with and spaced apart from the first stand along the first direction, the second stand being configured to define a portion of the inspection tunnel for a moving vehicle to pass through the inspection tunnel, and the second stand comprising a horizontal view angle scanning device including a second X-ray accelerator disposed at a first vertical side stand portion of the second stand, and the second X-ray accelerator being configured to emit X-rays toward the inspection tunnel defined by the second stand to conduct inspection of the moving vehicle in the inspection tunnel.

According to one aspect of the present invention, the vertical view angle scanning device further comprises a first bottom side frame portion detector disposed at the bottom side frame portion of the first frame and a first side frame portion detector respectively located at the first vertical side frame portion and the second vertical side frame portion of the first frame, which are opposite to each other, for receiving a radiation signal transmitted through the vehicle emitted from the first X-ray accelerator so as to form a first transmission image of the moving vehicle;

the horizontal view angle scanning apparatus further includes a second side stand portion detector disposed at a second vertical side stand portion of the second stand opposite to the first vertical side stand portion and a second top stand portion detector disposed at the top stand portion for receiving a vehicle-transmitted radiation signal emitted by the second X-ray accelerator to form a second transmission image of the moving vehicle.

According to an aspect of the present invention, the horizontal visual angle scanning device and the vertical visual angle scanning device are relatively fixedly arranged and independently operate respectively by receiving respective signals and processing to form images respectively.

According to an aspect of the utility model, the security check equipment is including being located one side or both sides of the inspection passageway of security check equipment, along a plurality of detection device that vehicle moving direction arranged with the relative definite interval, a plurality of detection device include:

first and second spaced apart detection devices configured to be capable of measuring the speed of a moving vehicle, wherein the first detecting device is located at an upstream position of the horizontal visual angle scanning device and the vertical visual angle scanning device, and is configured to derive the vehicle profile and detect that the vehicle compartment of the vehicle leaves the first detecting device when the vehicle passes through the first detecting device, measuring the speed of the vehicle by dividing the distance between the first and second detection means by the time interval over which the vehicle passes the first and second detection means, using the measured speed of the vehicle to derive the size of the cab, thereby determining the position of the cab of the moving vehicle in the inspection lane, and then determining the beam outgoing time of the vertical visual angle scanning device and the horizontal visual angle scanning device so as to respectively emit beams after the cab passes through the vertical visual angle scanning device and the horizontal visual angle scanning device respectively.

According to the utility model discloses an aspect, draws the vehicle profile including the locomotive that detects the vehicle and finds the boundary between vehicle cab and carriage through first detection device.

According to an aspect of the present invention, the first detecting means is spaced apart from one of the approaches of the horizontal visual angle scanning means and the vertical visual angle scanning means by a predetermined distance so as to determine: after the head of the vehicle passes through the first detection device for a preset time T1, the cab of the vehicle leaves the close one of the horizontal visual angle scanning device and the vertical visual angle scanning device, and the close one is triggered to beam out; after a preset time T2 after the head of the vehicle passes through the first detection device, the cab of the vehicle leaves the other one of the horizontal visual angle scanning device and the vertical visual angle scanning device to trigger the other one to go out of the beam.

According to one aspect of the present invention, the plurality of detecting means includes a third detecting means located downstream of the first detecting means in the vehicle traveling direction for correcting the vehicle contour size, the boundary between the vehicle cab and the vehicle compartment, and the length of the cab, which are obtained by the first detecting means, together with the first detecting means; and a third detecting device is used for the first vehicle type with the length of the vehicle head, the third detecting device is arranged to continuously wait for the preset time T1 when the vehicle head reaches the third detecting device, the two signals jointly determine that the cab of the vehicle passes through and leaves one of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is close to the first detecting device, trigger one of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is close to the first detecting device, to emit ray beams to scan the carriage of the vehicle, and determine that the other of the horizontal visual angle scanning device and the vertical visual angle scanning device cannot emit the ray beams.

According to one aspect of the present invention, the plurality of detecting means includes a fourth detecting means located downstream of the first detecting means in the vehicle traveling direction for correcting the vehicle contour size, the boundary between the vehicle cab and the vehicle compartment, and the length of the cab, which are obtained by the first detecting means, together with the first detecting means; and, a fourth detection device is respectively used for the second vehicle type with the second vehicle head length, the fourth detection device is arranged to continuously wait for the preset time T1' when the vehicle head reaches the fourth detection device, the two signals jointly determine that the vehicle cab has passed through and departs from one of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is close to the first detection device, trigger the one of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is close to the first detection device, to emit the ray beam to scan the carriage of the vehicle, and determine that the other of the horizontal visual angle scanning device and the vertical visual angle scanning device cannot emit the ray beam.

According to an aspect of the present invention, the plurality of detection devices include a fifth detection device provided downstream of the third detection device in the vehicle traveling direction for the first vehicle type, the fifth detection device being configured to: after a preset time T3 after the head of the vehicle passes through the first detection device, if the fifth detection device does not detect that the head of the vehicle reaches the fifth detection device, the horizontal visual angle scanning device and the vertical visual angle scanning device stop beam outgoing, wherein after the preset time T3 after the head of the vehicle passes through the first detection device, the first detection device and the second detection device determine the time required by the vehicle to pass through one of the horizontal visual angle scanning device and the vertical visual angle scanning device and to be close to the first detection device according to the obtained vehicle contour size and the latest vehicle speed provided by the sensor group; and then, according to the measured new vehicle running speed, determining the time required by delaying beam-out till the vehicle scanning is completed or the tail of the vehicle leaves one or a third detection device of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is far away from the first detection device, so that the beam of the horizontal visual angle scanning device and the vertical visual angle scanning device which are re-beamed stops emitting the beam of the beam, which is close to the first detection device.

According to an aspect of the present invention, the plurality of detecting means includes six detecting means, which are located downstream of the fourth detecting means in the vehicle traveling direction, the sixth detecting means is for the second vehicle type, the sixth detecting means is configured to, after a predetermined time T4 after the vehicle head of the vehicle passes through the first detecting means, cause the horizontal visual angle scanning means and the vertical visual angle scanning means to stop the beam if the sixth detecting means does not detect that the vehicle head of the vehicle of the second vehicle type reaches the sixth detecting means, wherein after the vehicle head passes through a predetermined time T4 after the first detecting means, the first detecting means and the second detecting means determine a time required for the vehicle to pass through all of the horizontal visual angle scanning means and the vertical visual angle scanning means, the time being required for the vehicle to pass through one of the horizontal visual angle scanning means and the vertical visual angle scanning means, which is far away from the first detecting means, based on the obtained vehicle profile size and the latest vehicle speed provided by the sensor group; and then, according to the measured new vehicle running speed, after the time required by beam emission delaying to the completion of vehicle scanning is determined, or the tail of the vehicle leaves one or a fourth detection device of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is far away from the first detection device, the beam emission of the beam of the horizontal visual angle scanning device and the vertical visual angle scanning device which emit beams again is stopped.

According to an aspect of the present invention, the plurality of detection devices include a seventh detection device, which is located downstream of the third detection device in the vehicle traveling direction, and the seventh detection device is configured to allow one of the horizontal visual angle scanning device and the vertical visual angle scanning device, which is away from the first detection device, to start emitting the bundle of rays when the vehicle head that detects the vehicle reaches the seventh detection device.

According to an aspect of the present invention, the plurality of detection devices includes an eighth detection device located downstream of the third detection device in a vehicle traveling direction, the eighth detection device being configured to allow one of the horizontal viewing angle scanning device and the vertical viewing angle scanning device, which is far from the first detection device, to start emitting the bundle of rays when it is detected that the head of the vehicle reaches the eighth detection device; the seventh detection device and the eighth detection device are respectively used for different vehicle types.

According to the utility model discloses an aspect, only judge that the driver's cabin leaves the one of keeping away from first detection device of horizontal visual angle scanning device and vertical visual angle scanning device when first detection device and second detection device, seventh detection device or eighth detection device judge simultaneously that the driver's cabin leaves the one of keeping away from first detection device of horizontal visual angle scanning device and vertical visual angle scanning device, trigger the transmission bundle of rays of keeping away from first detection device of horizontal visual angle scanning device and vertical visual angle scanning device.

According to the utility model discloses an aspect, the speed of second detection device can be measured the vehicle alone all the time in accomplishing vehicle inspection process.

According to an aspect of the invention, the security check device is configured to issue a warning signal to slow down or stop the moving vehicle when the plurality of detection means detect that the vehicle speed exceeds a predetermined threshold.

According to an aspect of the utility model, the vehicle self removes, perhaps, the vehicle passes through the draw gear traction movement of security installations.

According to an aspect of the utility model, vertical visual angle scanning device arranges the center at the top of scanning passageway for the skew center line position of inspection passageway of first X-ray accelerator is not more than 500 mm.

Drawings

Fig. 1a, fig. 1b and fig. 1c are schematic diagrams of a first bracket, a second bracket and a combination thereof of a security inspection apparatus according to an embodiment of the present invention;

fig. 2 is a schematic layout of a security inspection apparatus according to an embodiment of the present invention, wherein a dotted line 100 schematically represents a first support and an X-ray accelerator and detector thereon, and a dotted line 200 schematically represents a second support and an X-ray accelerator and detector thereon;

fig. 3 is a schematic layout of a security inspection apparatus according to an embodiment of the present invention, wherein a dotted line 100 schematically represents a first support and an X-ray accelerator and detector thereon, and a dotted line 200 schematically represents a second support and an X-ray accelerator and detector thereon;

fig. 4 is a schematic layout diagram of a security inspection apparatus according to an embodiment of the present invention, wherein a dotted line 100 schematically represents a first support and an X-ray accelerator and detector thereon, and a dotted line 200 schematically represents a second support and an X-ray accelerator and detector thereon.

Fig. 5 is a schematic diagram of a vertical view scanner at a top leg portion of a first leg in an embodiment of the invention.

Detailed Description

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention as defined by the appended claims. The figures are for illustration and are not drawn to scale.

The use of the terms first, second, etc. in this description is not intended to distinguish between different components, but rather to rank or indicate importance or primary-secondary relationship. In this specification, "top side" and "bottom side" are orientations of upper and lower sides with respect to an object standing upright in general.

A number of embodiments according to the invention are explained below with reference to the drawings.

An embodiment of the utility model provides a security installations for vehicle that moves, including at least one support, at least one support is injectd along the inspection passageway that first direction extends, and wherein at least one support is including the first support 100 that is used for vertical scanning, first support 100 is injectd along the inspection passageway P that first direction extends, and wherein first support is including the vertical visual angle scanning device that is used for vertical scanning. The vertical view angle scanning apparatus includes a first X-ray accelerator 110 disposed at a top side frame portion of the first frame 100, and the first X-ray accelerator 110 is configured to emit X-rays downward toward a portion of the inspection passage defined by the first frame 100 so as to conduct an inspection of a moving vehicle in the inspection passage.

In one embodiment, the opening angle of the first X-ray accelerator 110 may be between 69 and 120 degrees. In some specific applications, the field angle of the X-ray beam emitted by the first X-ray accelerator 110 of the vertical view angle scanning device is 69 degrees, 69.5 degrees, 70 degrees, 75 degrees, 80 degrees, 89 degrees, 90 degrees (such as shown in fig. 1 a), 95 degrees, or the like. The first X-ray accelerator 110 of the vertical view angle scanning device has an opening angle of 69 degrees or more, for example, which is advantageous, because the vertical view angle scanning device having a large opening angle is used, and compared to a security inspection apparatus provided with a conventional X-ray accelerator having an opening angle of less than 69 degrees or an opening angle of less than 60 degrees, the height of the first bracket of the security inspection apparatus can be reduced, and the X-rays emitted from the X-ray accelerator having a large opening angle can cover the vehicle passing thereunder. Thus, according to an embodiment of the present invention, the first support configured by the X-ray accelerator with an opening angle of 69 degrees or more than 70 degrees has a reduced height relative to the prior art supports, and thus the height of the security inspection apparatus is reduced and the volume of the apparatus is reduced.

The vertical view scanning device is disposed at the center of the top of the scanning tunnel such that the first X-ray accelerator is not more than 500mm off-center from the centerline position of the inspection tunnel.

In another embodiment of the present disclosure, as shown in fig. 5, the vertical viewing angle scanning device may be disposed at an off-center position at the top of the scanning tunnel, for example, off-center to the left in fig. 1 c; however, it should be understood that the vertical viewing angle scanning device may be disposed off-center to the right of the top of the scanning tunnel. In this embodiment, the vertical view angle scanning device may emit a radiation beam with an opening angle greater than 69 degrees or even greater than 70 degrees, but of course, the opening angle may be less than 70 degrees, for example, 69 degrees as shown in fig. 1c, or other opening angles.

It should be appreciated that the security inspection apparatus may include only the second carriage 200, the second carriage 200 includes a horizontal view angle scanning device, the second X-ray accelerator 210 is provided at a vertical side carriage portion of the second carriage 200, and the second X-ray accelerator 210 is configured to emit X-rays toward a portion of the inspection passage defined by the second carriage 200 so as to perform inspection of the moving vehicle in the inspection passage.

In one embodiment of the present disclosure, the at least one stand further includes a second stand 200 for horizontal scanning, the second stand 200 being aligned with and spaced apart from the first stand 100 in the first direction, the second stand 200 being configured to define a portion of the inspection passage for a moving vehicle to pass through the inspection passage, and the second stand 200 including a horizontal view angle scanning device including a second X-ray accelerator 210 disposed at a first vertical side stand portion 201 of the second stand 200, and the second X-ray accelerator 210 being configured to emit X-rays toward the inspection passage defined by the second stand 200 to perform an inspection of the moving vehicle in the inspection passage. Fig. 1c schematically shows an arrangement of the first bracket 100 and the second bracket 200. In one embodiment, the second X-ray accelerator may emit an X-ray beam having an opening angle between 60 and 120 degrees. For example, the second X-ray accelerator 210 of the horizontal view angle scanning device emits an X-ray beam having an opening angle of 60 degrees, 64 degrees, 68 degrees, 69 degrees, 70 degrees, 80 degrees, 89 degrees, or 90 degrees. The field angle of the X-ray accelerator of the horizontal view angle scanning device is more than 60 degrees, which is beneficial to reducing the width of the whole second bracket 200 and the X-ray accelerator, so that the whole size of the whole security inspection equipment is reduced. In some cases, such as providing a fixed width inspection lane, the horizontal view scanning device can scan more information; the vertical visual angle scanning device and the horizontal visual angle scanning device are used in combination, so that the information of vehicles can be prevented from being missed. However, in some embodiments, the field angle of the X-ray beam emitted from the second X-ray accelerator 210 of the horizontal view angle scanning device may be less than 60 degrees, and the inspection can also be completed.

For example, in an embodiment of the present invention, the width of at least one rack of the security inspection apparatus may be about 4 meters, the height is 5 meters or more, and the dimensions of the defined scanning passage P are about 4 meters wide and 5.2 meters high. The height of the vertical view scanning device is about 7 meters. The vertical view accelerator is arranged such that the top of the first support is located on the center line of the scanning passage. It should be appreciated that the vertical view accelerator may be disposed near the centerline of the scanning channel, and is not limited to being strictly located at the centerline of the scanning channel, and that a certain limit of error in the position of the vertical view accelerator does not significantly affect the imaging quality of the transmission image, but is typically not more than 500mm away from the centerline of the scanning channel.

In one embodiment, the first bracket 100 and the second bracket 200 are separate. The vertical view angle scanning device of the first support 100 and the horizontal view angle scanning device of the second support 200 may be operated independently or in combination. The positions of the horizontal visual angle scanning device and the vertical visual angle scanning device can be set according to actual requirements, namely, the distance between the horizontal visual angle scanning device and the vertical visual angle scanning device can be set, and the horizontal visual angle scanning device and the vertical visual angle scanning device are respectively fixed on the respective positions in the checking process.

In the present embodiment, the first rack 100 and the second rack 200 are separate individuals, which facilitates transportation of the security inspection apparatus, because the second rack 200 and the first rack 100 can be transported separately, reducing the volume and weight required for transportation, which is particularly advantageous for large security inspection apparatuses, resulting in enhanced adaptability of the security inspection apparatus. Fig. 1a, 1b and 1c illustrate a first and a

second gantry

100, 200 and a first and a

second X-ray accelerator

110, 210, respectively. It should be noted that, during the inspection process, the two can be arranged as required.

As shown in fig. 1a, a first X-ray accelerator 110 is disposed on the top of the first support 100, an X-ray beam emitted downward by the first X-ray accelerator 110 forms a fan shape in a vertical direction of the first direction, a detector 124 is disposed on the bottom support part 104 of the first support 100, and

detectors

121 and 122 are disposed on the first vertical side support part 101 and the second vertical side support part 102 of the first support 100, respectively. The signals detected by the

detectors

124, 121, 122 are used together to construct cross-sectional information of the vehicle, referred to herein as a first transmission image.

In another embodiment, as shown in fig. 5, the first X-ray accelerator 110 is disposed at a position off-center to the left of the top of the first gantry 100, and accordingly, detectors are respectively provided at the bottom side gantry portion and the right side vertical side gantry portion of the first gantry 100, and the two detectors may constitute an "L" shaped detector arrangement.

As shown in fig. 1b, a second X-ray accelerator 210 is disposed on the first vertical side frame portion 201 of the second frame 200, a fan-shaped surface of an X-ray beam emitted by the second X-ray accelerator 210 can irradiate the second vertical side frame portion 202 and the top side frame portion 203 of the second frame 200, and

detectors

221 and 220 are disposed on the second vertical side frame portion 202 and the top side frame portion 203 respectively and are used for receiving a radiation signal of a penetrating vehicle emitted by the second X-ray accelerator 210. The signals detected by the

detectors

221, 220 are used together to construct cross-sectional information of the vehicle, referred to herein as a second transmission image.

In this embodiment, the detector on the first support 100 may be a detector array in order to obtain a clearer image. The detector of the second support 200 may be a detector array.

The first and second transmission images may be complete images, each for inspection of the vehicle.

In one embodiment, the distance between the first X-ray accelerator and the second X-ray accelerator is less than 3 meters.

The horizontal viewing angle scanning device and the vertical viewing angle scanning device can work independently. In other words, according to the security inspection apparatus of the present invention, in a case where the vertical viewing angle scanning apparatus does not operate, the horizontal viewing angle scanning apparatus can independently operate to provide a transmission image of the moving vehicle; also, in the case where the horizontal view angle scanning device is not operated, the vertical view angle scanning device may be independently operated to provide a transmission image of a moving vehicle.

In one embodiment, the vehicle may use its own power to pass through the inspection lane. In another embodiment, the security inspection device has a traction device for pulling the vehicle through the inspection passage at a constant speed. In the embodiment that the vehicle uses the power of itself to pass through the inspection channel, the driver or the driver of the vehicle does not need to park and get off the vehicle, and the vehicle can directly drive through the inspection channel, thereby facilitating the security inspection operation and saving the security inspection time. In the embodiment that the security inspection equipment is provided with the traction device for drawing the vehicle through the inspection channel at a constant speed, a driver or a driver of the vehicle needs to stop and get off the vehicle, and a cab of the vehicle can scan to obtain a transmission image of the whole vehicle.

It is desirable that the vehicle can pass through the inspection tunnel at a constant speed, however, the vehicle can pass through the inspection tunnel at a variable speed, and the security inspection apparatus of the embodiment of the present disclosure can perform inspection on the vehicle passing through the inspection tunnel at a variable speed.

According to the utility model discloses an embodiment, security installations is including being located one side or both sides of security installations's inspection passageway, along a plurality of detection device of vehicle moving direction fixed arrangement, and fig. 2-4 show in a plurality of embodiments of this disclosure about a plurality of arrangement mode of detection device along inspection passageway.

As shown in fig. 2, the plurality of detection means includes: a first detecting device 10 and a second detecting device 20 which are separated by a preset distance and are configured to be capable of measuring the speed of the moving vehicle, wherein the first detecting device 10 is located at the upstream position of the horizontal visual angle scanning device and the vertical visual angle scanning device and is configured to obtain the profile of the vehicle when the vehicle passes through the first detecting device 10, so that the size of the cab can be obtained by using the measured speed of the vehicle and the driving time of the vehicle, for example, the length of the cab can be obtained by multiplying the time from the head of the vehicle to the first detecting device 10 until the cab leaves the first detecting device 10 by the driving speed of the vehicle; by combining the distance between the first detection device 10 and the first support 100 and the distance between the first support 100 and the second support 200, the position of the cab of the moving vehicle in the inspection channel (relative to the first support 100 and the second support 200) can be judged, so that the beam outgoing time of the vertical visual angle scanning device and the beam outgoing time of the horizontal visual angle scanning device are respectively controlled, the beams are respectively emitted after the cab passes through the vertical visual angle scanning device and the horizontal visual angle scanning device respectively, and people in the cab are prevented from being irradiated by radiation.

In one embodiment, the first detection device 10 may be a detection device constituting a light curtain, for example, including three light sources, covering the entire height of the vehicle, when the vehicle passes through, the vehicle blocks the light from the light sources, so that the detector of the first detection device 10 cannot receive the light from the light sources, and thus the vehicle can be judged to reach the position of the first detection device 10; when the gap between the cab and the passenger compartment of the vehicle passes, the light of the light source is received by the gap detector, and thus the position where the gap, that is, the gap between the cab and the passenger compartment of the vehicle passes through the first detecting means 10 can be determined. Thus, the first detecting device 10 can derive the general outline of the vehicle.

In one embodiment, the first detecting device 10 may also be a laser scanner, which emits laser light and scans a cross section perpendicular to the inspection passage to form a light curtain, when the vehicle passes through the first detecting device, the vehicle reflects the laser light, and the detector of the first detecting device detects the reflected laser light, thereby determining that the vehicle passes through the first detecting device. In other embodiments, the first detection device may be other types of detection devices.

In the embodiment of fig. 2, the second detecting means 20 is arranged upstream (with respect to the traveling direction of the vehicle) of the first detecting means 10, the first detecting means 10 is located upstream of the vertical view angle scanning means of the first bracket 100 for deriving the vehicle profile dimension when the vehicle passes through the first detecting means 10, including detecting the head of the vehicle, finding the boundary between the cab and the car of the vehicle, and detecting that the car of the vehicle leaves the first detecting means, and the speed of the vehicle is measured together with the second detecting means 20, i.e., the speed of the vehicle is measured by dividing the distance between the first detecting means and the second detecting means by the time interval of the vehicle passing through the first detecting means and the second detecting means, thereby deriving the lengths of the cab and the car. Specifically, the second detection device 20 emits light perpendicular to the inspection passage, when the vehicle reaches the second detection device 20, the light emitted by the second detection device 20 is reflected by the vehicle, and the second detection device 20 can judge that the vehicle passes by receiving the light reflected by the vehicle; the vehicle continues to advance, the light curtain emitted by the first detection device 10 irradiates the advancing vehicle, so that the arrival of the vehicle head can be detected, and the speed of the vehicle is calculated according to the distance between the first detection device 10 and the second detection device 20 and the time interval recorded by the security inspection equipment when the vehicle head arrives at the second detection device 20 and the first detection device 10 in sequence. Here, the second detecting device 20 may include a photo sensor that detects the arrival of the vehicle when the vehicle passes through the second detecting device 20. The second detection device 20 does not need to have a speed measurement function, even does not need to scan along a direction vertical to the inspection channel to form a light curtain, only emits a light beam to cross the inspection channel, and when the head of the vehicle is irradiated by the light beam of the second detection device 20, the second detection device 20 can judge the arrival of the head; a detector can be arranged on the opposite side of the inspection passage to detect the light beam, and the arrival of the vehicle can be judged when the vehicle blocks the light beam. In the present embodiment, the second detecting device 20 and the first detecting device 10 together complete the speed measurement of the vehicle.

In the present embodiment, the distance from the first detecting device 10 to the first stand 100 having the vertical view angle scanning device, and the distance from the first stand 100 to the second stand 200 having the horizontal view angle scanning device are preset and fixed during the inspection, and thus, after calculating the speed of the vehicle and determining the time when the vehicle head reaches the first detecting device 10, the position of the vehicle can be judged by timing: after the head of the vehicle passes through the first detection device 10 for a preset time T1, the cab of the vehicle leaves the vertical visual angle scanning device (the first bracket 100), and the vertical visual angle scanning device is allowed to be triggered to scan the carriage of the vehicle; the predetermined time T2 after the head of the vehicle passes the first detecting device 10, the cab of the vehicle leaves the horizontal viewing angle scanning device, allowing the horizontal viewing angle scanning device to be triggered to scan the carriage of the vehicle.

In one embodiment, referring to fig. 2, the plurality of detection means may further comprise a third detection means 30, located downstream of the first detection means 10 in the direction of travel of the vehicle, for use with the first detection means 10 in correcting the vehicle contour dimension, the vehicle cab-to-cabin boundary and the cab length derived by the first detection means 10. The third detection means 30 is not essential, however, in the course of security checks of some stationary vehicle types it is advantageous to provide the third detection means 30, for example, the distance between the third detection means 30 and the first bracket 100 is arranged such that it is determined that the cab has passed the vertical view scanning means of the first bracket 100 when the vehicle head reaches the third detection means 30. That is, the distance between the third sensing device 30 and the first bracket 100 is set to fix the length of the cab of the vehicle type such that the cab passes completely through the vertical viewing angle scanning device of the first bracket 100 when the vehicle head reaches the third sensing device 30. For example, the third detection device 30 is for a first vehicle type, e.g. a first vehicle type having a first length of the vehicle head. The third detecting device 30 as hardware can directly determine that the cab of the vehicle has passed through the vertical angle-of-view scanning device, and at this time, the vertical angle-of-view scanning device is allowed to be triggered to emit the ray beam to scan the compartment of the vehicle. However, according to the present embodiment, only under the condition that the first detection device 10 and the second detection device 20 judge that the cab of the vehicle leaves the vertical viewing angle scanning device, and the third detection device 30 determines that the cab of the vehicle has passed through the vertical viewing angle scanning device, the vertical viewing angle scanning device is triggered to emit a beam of rays to scan the passenger compartment of the vehicle, and the other of the horizontal viewing angle scanning device and the vertical viewing angle scanning device is determined not to emit the beam.

In one embodiment, referring to fig. 2, the plurality of detection devices may further include a fourth detection device 40 located downstream of the first detection device 10 in the vehicle traveling direction, the fourth detection device 40 being arranged to determine that the vehicle cab has passed and left the vertical viewing angle scanning device when the vehicle head reaches the fourth detection device 40, wherein the third detection device 30 and the fourth detection device 40 are respectively used for different vehicle types, the different vehicle types refer to vehicle types with different cab lengths, and the different vehicle types may be adapted using the third detection device 30 and the fourth detection device 40, so that the adaptability of the security inspection apparatus is enhanced. For example, the fourth detection device 40 is used for a second vehicle type having a vehicle head of a second length.

According to the present embodiment, only under the condition that the first detection means and the second detection means judge that the cab of the vehicle is away from the vertical visual angle scanning means while the fourth detection means determines that the cab of the vehicle has been away from the vertical visual angle scanning means, one of the horizontal visual angle scanning means and the vertical visual angle scanning means which is close to the first detection means is triggered to scan the passenger compartment of the vehicle, and the other of the horizontal visual angle scanning means and the vertical visual angle scanning means is determined not to be beamed.

For example, the third detection device 30 is used for checking a flathead car (first car type), and the fourth detection device 40 is used for checking a long-head car (second car type), which have different cab lengths, the cab of the flathead car is shorter than the cab length of the long-head car, and the third detection device 30 and the fourth detection device 40 have different distances from the first bracket 100. Although the security inspection apparatus can judge that the cab has passed through the vertical viewing angle scanning means through the first and second detection means 10 and 20, for the safety of the driver, it can further confirm that the cab has passed through the vertical viewing angle scanning means through the dedicated third or fourth detection means 30 or 40, and the security inspection apparatus allows the vertical viewing angle scanning means to emit the beam of rays after confirming that the cab of the flathead car has passed through the vertical viewing angle scanning means by the third or fourth detection means 30 or 40. Such an arrangement is advantageous in that the security inspection apparatus of the present embodiment can be applied to both types of vehicles in common use, and in that even if the speed of the vehicle changes, it is possible to achieve convenient, quick and safe inspection of the driver.

In this embodiment, the third detection device and the fourth detection device may be regarded as hardware for determining that the cab has passed through the vertical viewing angle scanning device, and the first detection device and the second detection device may also be able to determine whether the cab has passed through the vertical viewing angle scanning device, and only if both of them are satisfied, the cab has passed through the vertical viewing angle scanning device, the vertical viewing angle scanning device is triggered to emit the beam. For example, when the first detection device and the second detection device judge that the cab has passed through the vertical visual angle scanning device, however, the third detection device or the third detection device does not detect the arrival of the vehicle head of the corresponding vehicle type, the vertical visual angle scanning device is not triggered to emit the beam; when the first detection device and the second detection device are not received, the vertical visual angle scanning device is triggered to emit ray bundles, but the third detection device or the third detection device detects that the vehicle head of a corresponding vehicle type arrives, the vertical visual angle scanning device is not triggered to emit ray bundles. This is advantageous, in the security inspection apparatus of this embodiment, it can be understood that two sets of detection devices are provided for determining whether the cab of the vehicle passes through the vertical viewing angle scanning device, and only when it is determined that the cab leaves the vertical viewing angle scanning device by both sets of detection devices, it is determined without error that the cab has passed through the vertical viewing angle scanning device, and the emission beam is triggered, thereby ensuring the safety of the personnel.

In one embodiment, referring to fig. 2, the plurality of detection devices may further include a fifth detection device 50 disposed downstream of the first detection device 10 in the vehicle traveling direction, the fifth detection device 50 being configured to: after a preset time T3 after the head of the vehicle passes through the first detection device, if the fifth detection device 50 does not detect that the head of the vehicle reaches the fifth detection device 50, the vertical visual angle scanning device stops beam outgoing, wherein after the preset time T3 after the head of the vehicle passes through the first detection device 10, the first detection device 10 and the second detection device 20 judge the time required by the vehicle to pass through the vertical visual angle scanning device completely according to the obtained vehicle contour size and the latest vehicle speed provided by the sensor group. According to the embodiment, when the vehicle does not travel to the fifth detection device 50 within the preset time, it is indicated that the vehicle is still at a position close to the ray within a long time, and in order to ensure that the single radiation absorption dose of the driver meets the standard, the horizontal visual angle scanning device and the vertical visual angle scanning device stop outputting the beam within a short time, and the scanning process is interrupted. If the vehicle reaches the fifth detection device 50 within the preset time T3, the driver is already far from the ray, and the driver protection scanning process does not need to be triggered to continue normally. Subsequently, the safety inspection device delays beam-out until the time required for the scanning of the vehicle is finished or the tail of the vehicle leaves one of the horizontal visual angle scanning device and the vertical visual angle scanning device far away from the first detection device or even leaves the third detection device according to the latest vehicle running speed measured by the sensor combination, so that the vertical visual angle scanning device which re-beam-out stops beam-out. It is important to protect the safety of personnel during the security check, the speed of travel of the vehicle may vary, the vehicle may not have completed scanning within the calculated time, and it is therefore advantageous to provide the fifth detection means 50 to ensure that the emission of the radiation beam is stopped. Here, when the vertical angle scanning device stops the beam discharge, the horizontal angle scanning device ensures that the beam is not discharged. In the present embodiment, the fifth detecting device 50 is located downstream of the fourth detecting device 40 in the vehicle traveling direction.

In the present embodiment, the plurality of detection devices further includes a sixth detection device 60, which is located downstream of the first detection device 10 in the vehicle traveling direction, and the sixth detection device 60 is configured to, after a predetermined time T3' after the vehicle head of the vehicle passes through the first detection device, cause the horizontal angle-of-view scanning device and the vertical angle-of-view scanning device to stop beam outgoing if the sixth detection device 60 does not detect that the vehicle head reaches the sixth detection device 60 (at which time the vertical angle-of-view scanning device should have stopped beam outgoing, however, to avoid occurrence of an erroneous operation, it is still determined that the vertical angle-of-view scanning device has stopped beam outgoing); after a preset time T3' after the vehicle head passes through the first detection device 10, the first detection device 10 and the second detection device 20 judge the time required for the vehicle to pass through the horizontal visual angle scanning device according to the obtained vehicle contour size and the latest vehicle speed provided by the sensor group. The safety inspection equipment delays beam-out time until the time required by the scanning of the vehicle is finished or the tail of the vehicle leaves one of the horizontal visual angle scanning device and the vertical visual angle scanning device far away from the first detection device or even leaves the fourth detection device according to the latest vehicle running speed measured by the sensor combination, so that the horizontal visual angle scanning device which re-beams out stops beam-out. In the present embodiment, the sixth detection device 60 is located downstream of the fifth detection device 50 in the vehicle traveling direction.

In one embodiment of the present disclosure, as shown in fig. 3, the plurality of detection devices includes a seventh detection device 70 and an eighth detection device 80 in addition to a third detection device 30 for determining that the cab of the flathead vehicle has passed the vertical angle scanning device and thus triggers the vertical angle scanning device to beam out, and a fourth detection device for determining that the cab of the longhead vehicle has passed the vertical angle scanning device and thus triggers the vertical angle scanning device to beam out. A seventh detection device 70 is located downstream of the third detection device 30 and is configured for determining that a cab of a first vehicle type, for example of a short-head (e.g. flathead) vehicle type, has passed the horizontal perspective scanning device and thus triggers the horizontal perspective scanning device to beam out. The eighth detection device 80 is located downstream of the fourth detection device 40 and is configured to determine that a cab of a second vehicle type, for example a long-head (e.g. long-head) vehicle type, has passed the horizontal perspective scanning device and thus triggers the horizontal perspective scanning device to beam out.

In the present embodiment, it should be noted that the flathead vehicle and the longhead vehicle are two different vehicle type examples. The third and fourth detecting

devices

30 and 40, and the seventh and eighth detecting

devices

70 and 80 may be used for two other vehicle types, respectively.

In this embodiment, when the seventh detecting device 70 or the eighth detecting device 80 determines that the scanning device for scanning the horizontal viewing angle of the cab is away from the horizontal viewing angle, and the first detecting device 10 and the second detecting device 20 determine that the scanning device for scanning the horizontal viewing angle of the cab is away from the horizontal viewing angle, the security inspection apparatus determines that the scanning device for scanning the horizontal viewing angle of the cab is away from the horizontal viewing angle. For example, when the first detection device 10 and the second detection device 20 determine that the cab has left the horizontal viewing angle scanning device, however, the seventh detection device 70 or the eighth detection device 80 does not detect the arrival of the vehicle head of the corresponding vehicle type, it does not trigger the emission of the ray beam, for example, the vehicle may slow down or stop, malfunction, etc. For example, when the first detection device 10 and the second detection device 20 do not allow the horizontal viewing angle scanning device to emit the ray bundle, even if the seventh detection device 70 or the eighth detection device 80 detects that the head of the corresponding vehicle type arrives, the horizontal viewing angle scanning device is not triggered to emit the ray bundle.

In another embodiment of the present disclosure, the plurality of detecting devices include all the detecting devices shown in fig. 2, and further include a seventh detecting device 70 and an eighth detecting device 80 shown in fig. 3, which ensure that the vertical view angle scanning device and the horizontal view angle scanning device emit the ray beams and stop the operation of emitting the ray beams, and ensure that the ray beams do not harm people in the cab during the process of rapidly inspecting the vehicle.

In one embodiment of the present disclosure, as shown in fig. 4, the first detecting device 10 is installed upstream of the vertical viewing angle scanning device (first carriage 100) in the traveling direction and spaced apart by a fixed distance. The first detection device 10 emits a laser beam and detects the reflected laser light to obtain information of an object irradiated with the laser light, which can be used for identifying a vehicle type. In the present embodiment, the second detection device 20 can independently measure the speed of the vehicle and position the vehicle, etc. without depending on the first detection device 10. The second detecting device 20 may be located downstream of the horizontal view angle scanning device (the second carriage 200) in the present embodiment. When the vehicle moves towards the security check equipment, the second detection device singly and directly measures the speed of the vehicle, and the speed of the vehicle can also be monitored in real time. The second detection device is configured to monitor the speed of the vehicle throughout the completion of the vehicle inspection. In this embodiment, the second detection means may emit a plurality of laser beams, for example, which divide the inspection tunnel into a plurality of regions, for example, one region every 1 meter, and which form a plurality of virtual light curtains by scanning in a direction perpendicular to the extension direction of the inspection tunnel for the positioning of the vehicle to and from the positions of these light curtains, thereby calculating the speed of the vehicle. The present embodiment is advantageous in that the first detection device 10 and the second detection device 20 can be used to detect the contour of the vehicle, measure the speed of the vehicle, and position the vehicle, so as to allow the security inspection apparatus to control the vertical angle-of-view scanning device and/or the horizontal angle-of-view scanning device, for example, to control them to emit the radiation beams, to stop emitting the radiation beams, and so on, so that the operation is convenient in practical application.

Specifically, as shown in fig. 4, when the vehicle travels into the inspection lane, the second detection device 20 may measure the speed of the vehicle; when the vehicle head arrives at the first detection device 10, the first detection device records the time t 0; the time t0 'is recorded when the vehicle cabin-to-cabin junction passes the first sensing device 10 (i.e., the cabin just passes the first sensing device 10), at which time the cabin length can be calculated from the vehicle speed, in combination with t0 and t 0'. When the vehicle continues to run, since the distance between the first detection device 10 and the first bracket 100 is known, the distance between the first bracket 100 and the second bracket 200 is known, the speed of the vehicle is known, and the length of the cab is known, it is possible to determine whether the vehicle head reaches the vertical viewing angle scanning device, whether the cab leaves the vertical viewing angle scanning device, whether the vehicle head reaches the horizontal viewing angle scanning device, whether the cab reaches the horizontal viewing angle scanning device, and whether the cab leaves the horizontal viewing angle scanning device by timing. In fact, by measuring the time when the cab leaves the vertical visual angle scanning device and the time when the cab leaves the horizontal visual angle scanning device, the security inspection equipment can judge the position of the division between the vehicle head and the cab and the carriage, thereby controlling the time of the vertical visual angle scanning device for emitting the ray bundle and the time of the cab leaving the horizontal visual angle scanning device for emitting the ray bundle. The embodiment can determine the contour, the size, the speed and the position of the vehicle of any vehicle type through fewer detection devices, allows the vehicle to quickly pass through the inspection passage to complete security inspection, does not need a driver to get off the vehicle, and can prevent the driver from being irradiated by rays.

In one embodiment, the security check device is configured to issue a warning signal to slow or stop the moving vehicle when the plurality of detection means detect that the vehicle speed exceeds a predetermined threshold. In order to protect the security check device, the driving speed of the vehicle has a limit, and the moving speed of the vehicle is too fast, the formed transmission image will be distorted, so that the security check device sets a vehicle speed threshold value, when the vehicle speed exceeds the threshold value, the security check device will send out a warning signal, such as an alarm sound, to remind the driver to stop passing through the security check device again, or slow down the driving speed of the vehicle, and ensure that the security check is performed normally.

According to the utility model discloses security installations can have two kinds of inspection modes, and first kind inspection mode corresponds the order of putting (with vehicle advancing direction) of first support 100 and second support 200, and second kind inspection mode corresponds the order of putting of second support 200 and the first support 100 in low reaches in the upper reaches of measuring advancing direction. In the above embodiments, the first inspection mode is described, and the second inspection mode is similar to the first inspection mode and is not described herein again.

According to the utility model discloses a process of using safety inspection equipment to carry out the inspection is roughly as follows: when the vehicle travels toward the security check device, the sensors of the vertical side stand portions of the security check device detect the vehicle, and a controller of the security check device, for example, receives signals of the plurality of sensors, determines whether the vehicle reaches the first stand 100 and the second stand 200; controlling the vertical view angle scanning device to scan the vehicle compartment when the vehicle cab has left the first bracket 100; when the cab of the vehicle leaves the second bracket 200, controlling the horizontal visual angle scanning device to scan the carriage of the vehicle; when the tail of the vehicle leaves the third detection device 30 or the delay time calculated according to the contour size of the vehicle and the vehicle speed reaches, controlling the vertical visual angle scanning device to stop beam outgoing; and when the tail of the vehicle leaves the fourth detection device 40 or the delay time calculated according to the contour size of the vehicle and the vehicle speed arrives, controlling the horizontal visual angle scanning device to stop beam outgoing.

Although a few embodiments of the present general patent 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 patent concept, the scope of which is defined in the claims and their equivalents.

Claims

1. A security device for a moving vehicle comprising at least one carriage defining an inspection channel extending in a first direction, wherein the at least one carriage comprises a first carriage for vertical scanning; wherein

2. The security inspection apparatus of claim 1, the at least one bracket further comprising a second bracket for horizontal scanning, the second bracket aligned with and spaced apart from the first bracket in the first direction, the second bracket configured to define a portion of the inspection corridor for the passage of moving vehicles through the inspection corridor, and the second bracket including a horizontal view angle scanning device including a second X-ray accelerator disposed at a first vertical side bracket portion of the second bracket, and the second X-ray accelerator configured to emit X-rays toward the inspection corridor defined by the second bracket for inspection of moving vehicles in the inspection corridor.

3. The security inspection apparatus of claim 2, wherein the vertical view angle scanning device further comprises a first bottom side frame portion detector disposed at the bottom side frame portion of the first frame and first side frame portion detectors respectively located at first and second opposing vertical side frame portions of the first frame for receiving the vehicle-transmitted radiation signals emitted by the first X-ray accelerator to form a first transmission image of the moving vehicle;

4. The security inspection apparatus of claim 2, wherein the horizontal view angle scanning device and the vertical view angle scanning device are relatively fixedly arranged and independently operate, respectively, by receiving respective signals and processing to image, respectively.

5. The security inspection apparatus of claim 1, wherein the vertical view scanning device is disposed at a center of a top of the scanning tunnel such that the first X-ray accelerator is no more than 500mm off center from a centerline position of the inspection tunnel.