WO2020010970A1

WO2020010970A1 - Radiation inspection system

Info

Publication number: WO2020010970A1
Application number: PCT/CN2019/090298
Authority: WO
Inventors: 宋全伟; 李营; 夏茂辉; 王伟珍; 于昊; 李荐民; 史俊平; 李玉兰; 宗春光; 陈志强; 李元景; 张丽
Original assignee: 同方威视技术股份有限公司
Priority date: 2018-07-11
Filing date: 2019-06-06
Publication date: 2020-01-16
Also published as: PL437308A1; BR102019014290A2; PL242104B1; CN108614301A

Abstract

A radiation inspection system. The system comprises: a platform (1), the top of which is used for bearing an object to be inspected (7); a frame (2) being movable with respect to the platform (1), a channel allowing said object (7) borne on the platform (1) to pass through is formed on the frame (2); and a ray source (4) and a first detector (6) used for receiving rays emitted by the ray source (4), wherein one of the ray source (4) and the first detector (6) is disposed at the top of the frame (2), and the other one is movably disposed at the bottom of the platform (1). Such a design can reduce the area occupied by the radiation inspection system, and decreases the area of a radiation protection region, so that the inspection system can be quickly assembled and can quickly start scanning.

Description

Radiation inspection system

Cross-reference to related applications

This application is based on an application with a CN application number of 201810756262.9 and an application date of July 11, 2018, and claims its priority. The disclosure of this CN application is incorporated herein as a whole.

Technical field

The present disclosure relates to the technical field of radiation scanning imaging inspection, and in particular, to a radiation inspection system.

Background technique

Among related radiation inspection systems, the combined mobile inspection system has the advantage of high image quality. The current combined mobile inspection systems are mostly horizontal viewing angles, that is, the ray source and detector are distributed on both sides of the scanning channel, resulting in a large footprint. In addition, the system can only scan one vehicle at a time, and the remaining vehicles need to wait in line, and the passing rate is low. And the system is not convenient to relocate.

Summary of the invention

According to an aspect of some embodiments of the present disclosure, a vehicle inspection system includes: a platform with a top for carrying an object to be detected; and a frame movable relative to the platform, the frame being formed to allow the object to be carried on the platform to pass through A channel; a ray source and a first detector for receiving rays from the ray source; wherein one of the ray source and the first detector is provided on the top of the frame; the ray The other of the source and the first detector is movably provided at the bottom of the platform.

In some embodiments, the ray source is disposed on the top of the frame; the first detector is movably disposed on the bottom of the platform.

In some embodiments, the first detector is disposed on the top of the frame; the ray source is movably disposed on the bottom of the platform.

According to an aspect of some embodiments of the present disclosure, a vehicle inspection system includes: a platform with a top for carrying an object to be detected; and a frame movable relative to the platform, the frame being formed to allow the object to be carried on the platform to pass through A channel; a ray source provided at the top of the frame; a chassis movably provided at the bottom of the platform; and a first detector provided on the chassis for receiving rays from the ray source .

In some embodiments, the radiation inspection system includes a second detector disposed on both sides of the frame for receiving radiation from the radiation source.

In some embodiments, the platform sequentially carries at least two detected objects along the moving direction of the frame.

In some embodiments, the frame is located above the platform via the outer sides of the two opposite side walls of the platform.

In some embodiments, the frame is movably disposed on the top of the platform as a whole.

In some embodiments, the radiation inspection system includes a chassis movably disposed at the bottom of the platform, on which the radiation source or the first detector is disposed.

In some embodiments, the radiation inspection system includes a synchronization device that connects the frame and the chassis to ensure that the frame and the chassis move synchronously.

In some embodiments, the synchronizing device includes a connector, a first end of which is connected to the frame, and a second end of which is connected to the chassis; the platform is provided with a slot that allows the connector to pass through and move, or hole.

In some embodiments, the synchronization device includes: a power unit including a first output shaft and a second output shaft; a first timing belt, which is provided on the outside of the platform and is connected to the frame for driving the frame Moving; the first output shaft is configured to be connected to the first timing belt to transmit power output by the power unit to the first timing belt; a second timing belt is provided inside the platform, The chassis is connected to drive the chassis to move; the second output shaft is configured to be connected to the second timing belt to transmit the power output by the power unit to the second timing belt.

In some embodiments, the synchronization device includes: a first power device provided on the frame; a second power device provided on the chassis; and a controller electrically connecting the first power device and the first power device Two power units are used to send signals to the first power unit and the second power unit to control the frame and the chassis to move synchronously.

In some embodiments, the radiation inspection system includes a first roller provided at the bottom of the frame for allowing the frame to walk along the ground; and / or, the radiation inspection system includes a second roller provided on the chassis. The bottom is used to make the chassis walk along the ground.

In some embodiments, the radiation inspection system includes a first rail assembly that cooperates with each other, disposed between the frame and the ground, or between the frame and the platform; and / or, includes a second coordinated second The guide rail assembly is disposed between the chassis and the ground.

In some embodiments, the radiation inspection system includes an identification device for identifying at least one of a license plate and a box number, the identification device is provided at an entrance of the platform.

In some embodiments, the detected object includes a vehicle, a container, a luggage, or a package.

According to an aspect of some embodiments of the present disclosure, the radiation source and the first detector are arranged up and down, which is a vertical viewing angle inspection method, reducing the lateral footprint of the radiation inspection system and reducing the area of the radiation protection area.

According to an aspect of some embodiments of the present disclosure, the radiation inspection system includes a platform, a frame, and a chassis. The frame is movable relative to the platform, and the chassis is movably disposed at the bottom of the platform for convenient relocation. After reaching the new scanning site, the chassis is set. Below the platform, the frame is placed above the scanning platform, which can be quickly assembled and scanning can be started quickly. The radiation inspection system also includes a ray source and a first detector. The ray source is set on the top of the frame and is a vertical viewing angle inspection method. The detector is located on the chassis located below the platform, which can reduce the footprint of the radiation inspection system and reduce the area of the radiation protection area.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic top view illustrating a radiation inspection system according to some embodiments of the present disclosure;

2 is a schematic perspective view illustrating a radiation inspection system according to some embodiments of the present disclosure;

3 is a schematic diagram illustrating a detector arrangement of a radiation inspection system according to some embodiments of the present disclosure;

4 is a schematic diagram illustrating a detector arrangement of a radiation inspection system according to other embodiments of the present disclosure;

5 is a schematic diagram illustrating a radiation inspection system setting synchronization device according to some embodiments of the present disclosure;

FIG. 6 is a schematic diagram illustrating a radiation inspection system setting synchronization device according to other embodiments of the present disclosure;

7 is a schematic diagram after the platform is removed in FIG. 6;

FIG. 8 is a partial schematic diagram of FIG. 7.

Description of the symbols in the drawings:

1-platform;

2-frame; 21-vertical arm; 22-first roller;

3-chassis; 31-second roller;

4-ray source;

5-second detector;

6-first detector;

7- test object;

81-connector; 82-power unit; 83-first timing belt; 84-second timing belt.

detailed description

In the following, the technical solutions in the embodiments will be clearly and completely described with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, and not all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

In the description of this disclosure, it should be understood that the terms "center", "portrait", "transverse", "front", "back", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inside", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present disclosure.

The inventor found through research that the footprint of the relevant radiation inspection system is large and the system is not convenient to relocate.

In view of this, the present disclosure proposes a radiation inspection system with a relatively small footprint and convenient relocation.

As shown in FIGS. 1 and 2, the radiation inspection system provided by some embodiments of the present disclosure includes a platform 1, a frame 2, a radiation source 4, and a first detector 6 for receiving radiation emitted by the radiation source 4.

The top of the platform 1 is used to carry the test object 7. The frame 2 is movable relative to the platform 1, and the frame 2 forms a passage allowing the object 7 carried on the platform 1 to pass. One of the ray source 4 and the first detector 6 is provided on the top of the frame 2; the other of the ray source 4 and the first detector 6 is movably provided on the bottom of the platform 1.

In some embodiments, the ray source 4 is disposed on the top of the frame 2; the first detector 6 is movably disposed on the bottom of the platform 1.

In some embodiments, the first detector 6 is disposed on the top of the frame 2; the radiation source 4 is movably disposed on the bottom of the platform 1.

In some embodiments, the radiation inspection system includes a chassis 3 that is movably disposed on the bottom of the platform 1 on which the radiation source 4 or the first detector 6 is disposed.

As shown in FIGS. 1 and 2, the radiation inspection system provided by some embodiments of the present disclosure includes a platform 1, a frame 2, a chassis 3, a ray source 4, and a first detector 6.

In some embodiments, the top of the platform 1 is used to carry the test object 7. Optionally, the platform 1 is fixed on the ground.

In some embodiments, the detected object 7 may include a vehicle, a container, a luggage, or a parcel waiting to be detected. Among them, the vehicle may be a container vehicle or other passenger vehicles.

In some embodiments, the frame 2 is movable relative to the platform 1, and the frame 2 forms a channel that allows the object 7 carried on the platform 1 to pass, that is, a scanning channel.

In some embodiments, the radiation source 4 is disposed on the top of the frame 2 (as shown in FIGS. 3 and 4), and the radiation emitted by the radiation source 4 is used to inspect the object 7. Optionally, the ray source 4 is provided in a middle region on the top of the frame 2.

In some embodiments, the first detector 6 is a bottom detector and is disposed at the bottom of the frame 2.

In some embodiments, the radiation source 4 is used to provide X-rays for inspecting the object 7. The ray source 4 may be an accelerator, an isotope source, an X-ray machine, or the like.

In some embodiments, the radiation inspection system further includes a second detector 5. The second detector 5 is a side detector and is provided on a side of the frame 2.

Optionally, the second detectors 5 are provided on both sides of the frame 2 and are used to receive the radiation emitted by the radiation source 4 (as shown in FIGS. 3 and 4).

In some embodiments, the chassis 3 is movably disposed at the bottom of the platform 1.

In some embodiments, the first detector 6 is disposed on the chassis 3 and is configured to receive radiation emitted by the radiation source 4 (as shown in FIGS. 3 and 4).

In some embodiments, the ray source 4 is provided on the top of the frame 2 and is a vertical viewing angle inspection method, that is, the ray source is placed above the scanning channel; the first detector 6 is provided on the chassis 3 below the platform 1, which is to detect The device is placed below the scanning channel, which can reduce the footprint of the radiation inspection system and reduce the area of the radiation protection area.

In some embodiments, the chassis 3 is provided with a first detector 6 for receiving radiation emitted by the radiation source 4, and two sides of the frame 2 are provided with second detectors 5 for receiving radiation emitted by the radiation source 4. Ensure that the inspected object 7 is imaged without dead spots.

In some embodiments, the frame 2 is movable relative to the platform 1, and the chassis 3 is movably disposed at the bottom of the platform 1 to facilitate relocation. After reaching the new scanning site, the chassis 3 is placed below the platform 1 and the frame 2 is placed at Above the platform 1, it can be quickly assembled and scanning can be started quickly.

In some embodiments, the platform 1 sequentially carries at least two detected objects 7 along the moving direction of the frame 2, which can greatly improve the throughput of the radiation inspection system. In addition, the length of the platform 1 can be extended according to the conditions of the site, and more objects 7 can be parked and scanned at the same time.

Before scanning, each object 7 to be inspected can be parked on the platform 1. For example, as shown in FIG. 1, the platform 1 can park at least two small vehicles at the same time, taking two as an example. After stopping, the driver left the scanning area. The radiation inspection system sequentially scans and inspects the vehicles parked on the platform 1.

In some embodiments, the frame 2 is disposed above the platform 1 via the outer sides of the two opposite side walls of the platform 1 (as shown in FIG. 2).

In some embodiments, the frame 2 includes a first side beam, a second side beam, and a top beam. The first side beam and the second side beam are respectively disposed on the outer sides of the opposite two side walls of the platform 1. The first end of the top beam is connected to the top of the first side beam, and the second end of the top beam is connected to the top of the second side beam. The ray source 4 is provided on the top beam.

In some embodiments, a vertical arm 21 is provided on a side of the first side beam and the second side beam near the platform 1. Optionally, at least one row of second detectors 5 is provided along the axial direction of the vertical arm 21 for receiving radiation emitted by the radiation source 4.

In some embodiments, the vertical arm 21 is located inside the frame 2, and the second detectors 5 on both sides of the frame 2 are disposed on the vertical arm 21. Of course, the vertical arms 21 may not be provided, and the second detectors 5 on both sides of the frame 2 may be directly placed on the first side beam and the second side beam of the frame 2.

Optionally, the chassis 3 is provided with at least one row of first detectors 6 for receiving radiation from the radiation source 4.

The arrangement of the first detector 6 and the second detector 5 needs to ensure that there is no dead angle imaging of the inspected vehicle. The arrangement is not unique, as shown in FIG. 3, as shown in FIG. 4, or other Layout scheme.

In some embodiments, the frame 2 is movably disposed on the top of the platform 1 as a whole (not shown in the figure).

In some embodiments, the radiation inspection system includes a synchronization device, which connects the frame 2 and the chassis 3 to ensure that the frame 2 and the chassis 3 move synchronously, that is, move back and forth relatively stationary. The synchronization device may have various implementation forms, which may be a mechanical synchronization device or an electronic synchronization device.

The synchronization device being a mechanical synchronization device may include the following embodiments.

In some embodiments, as shown in FIG. 5, the synchronization device includes a connecting member 81, a first end of the connecting member 81 is connected to the frame 2, and a second end of the connecting member 81 is connected to the chassis 3.

In some embodiments, the platform 1 is provided with a slot or hole that allows the connector 81 to pass through and move.

In some embodiments, the connecting member 81 may include a connecting shaft and the like.

As shown in FIGS. 6, 7 and 8, in some embodiments, the synchronization device includes a power unit 82, a first timing belt 83 and a second timing belt 84.

In some embodiments, the power unit 82 includes a motor, a reducer, and the like.

In some embodiments, the power unit 82 includes a first output shaft and a second output shaft.

In some embodiments, the first timing belt 83 is disposed outside the platform 1, the frame 2 is connected to the first timing belt 83, and the first timing belt 83 is used to drive the frame 2 to move. The first output shaft is configured to be connected to the first timing belt 83 for transmitting power output by the power unit 82 to the first timing belt 83.

Optionally, the synchronization device includes a first driving wheel and a first driven wheel, the first driving wheel is connected to the first output shaft, and the first timing belt 83 is connected to the first driving wheel and the first driven wheel.

Optionally, the first timing belt 83 may be a conveyor belt or a conveyor chain.

In some embodiments, the second timing belt 84 is disposed on the inner side of the platform 1, the chassis 3 is connected to the second timing belt 84, and the second timing belt 84 is used to drive the chassis 3 to move. The second output shaft is configured to be connected to the second timing belt 84 for transmitting the power output by the power unit 82 to the second timing belt 84.

Optionally, the synchronization device includes a second driving wheel and a second driven wheel, the second driving wheel is connected to the second output shaft, and the second timing belt 84 is connected to the second driving wheel and the second driven wheel.

Optionally, the second timing belt 84 may be a conveyor belt or a conveyor chain.

In some embodiments, the power unit 82 may be provided on one side of the end of the platform 1; or the power unit 82 may be provided on both sides of the end of the platform 1.

The first timing belt 83 drives the frame 2 and the second timing belt 84 drives the chassis 3. The speeds of the first output shaft and the second output shaft are the same, and the first driving wheel is the same size and the same speed as the second driving wheel; the first driven wheel is the same size and the same speed as the second driven wheel. The first timing belt 83 and The speed of the second timing belt 84 is the same, which can ensure that the frame 2 and the chassis 3 maintain synchronous movement, that is, relatively stationary.

The synchronization device being an electronic synchronization device may include the following embodiments.

In some embodiments, the synchronization device includes a first power device, a second power device, and a controller.

The first power unit is disposed on the frame 2 and is used to drive the frame 2 to operate. The second power unit is disposed on the chassis 3 and is used to drive the chassis chassis 3 to operate. The controller is electrically connected to the first power device and the second power device, and is configured to send signals to the first power device and the second power device to control the frame 2 and the chassis 3 to move synchronously.

In some embodiments, the radiation inspection system includes identification means for identifying at least one of a license plate and a box number. An identification device is provided at the entrance of the platform 1, and the identification device is used to bind the image with the license plate and / or the container number.

In some embodiments, when the platform 1 is higher than the ground, the radiation inspection system further includes a ramp platform. The ramp platform is provided at the entrance and exit of the platform 1, and the vehicle travels up the platform 1 or leaves the platform 1 through the ramp platform.

In some embodiments, the radiation inspection system further includes a first roller 22. The first roller 22 is disposed on the bottom of the frame 2, and the frame 2 travels along the ground through the first roller 22.

In some embodiments, the radiation inspection system further includes a second roller 31. The second roller 31 is disposed on the bottom of the chassis 3, and the chassis 3 travels along the ground through the second roller 31.

In some embodiments, the first roller 22 is mounted on the bottom of the frame 2, the first roller 22 drives the frame 2 to move forward and backward; the second roller 31 is mounted on the bottom of the chassis 3, and the second roller 31 drives the chassis 3 to move forward and backward.

In some embodiments, the frame 2 and the chassis 3 can be moved directly on the ground. When the frame 2 and the chassis 3 move on the ground, the system is equipped with a correction device to prevent the frame 2, the chassis 3 and the platform 1 from colliding with each other.

In some embodiments, the radiation inspection system further includes a first correction device for correcting the operation of the frame 2.

In some embodiments, the radiation inspection system further includes a second correction device for correcting the operation of the chassis 3.

In some embodiments, the frame 2 and the chassis 3 can walk on a set walking track.

In some embodiments, the radiation inspection system further includes a first rail assembly that cooperates with each other, and the first rail assembly is disposed between the frame 2 and the ground, or the first rail assembly is disposed between the frame 2 and the platform 1 so that the frame 2 You can walk along the track.

In some embodiments, the radiation inspection system further includes a second rail assembly that cooperates with each other, and the second rail assembly is disposed between the chassis 3 and the ground so that the chassis 3 can walk along the track.

The operation method for inspecting the vehicle by the radiation inspection system provided by some embodiments is:

The platform 1 is fixed on the ground, and the frame 2 and the chassis 3 can move forward and backward simultaneously on the track or on the ground. During scanning, the frame 2 carries the ray source 4 and the second detector 5 moving along the track or on the ground, the chassis 3 carries the first detector 6 moving along the track or on the ground, and the frame 2 and the chassis 3 move simultaneously. And keep relatively stationary, move from one end of the vehicle on the platform 1 to the other end, and when the entire scanning process ends, a complete scanned image of the vehicle under inspection is generated.

During scanning, the X-ray source 4 emits X-rays and penetrates the vehicle under test. The second detector 5 located on the vertical arm 21 and the first detector 6 located on the chassis 3 receive the X-rays and convert them into output signals, and generate digital image signals in real time .

During the scanning process, the ray source 4, the first detector 6, and the second detector 5 remain relatively stationary, and the vehicle under inspection is parked on the platform 1 and remains stationary.

After the scan, each driver drove their vehicle away from platform 1 at a time.

The inspected vehicle may include a container truck or a passenger vehicle.

In the description of this disclosure, it should be understood that the use of words such as “first” and “second” to define parts is only for the convenience of distinguishing the above parts. The above words are not special unless otherwise stated Meaning, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not limited thereto. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the present invention can still Modifications or equivalent replacements of some of the technical features of the disclosed specific embodiments; without departing from the spirit of the technical solutions of the present disclosure, they should all be covered within the scope of the technical solutions claimed by the present disclosure.

Claims

A radiation inspection system includes:

Platform (1), the top is used to carry the test object (7);

A frame (2), which is movable relative to the platform (1), and the frame (2) forms a passage allowing an object (7) carried on the platform (1) to pass;

A radiation source (4) and a first detector (6) for receiving radiation emitted by the radiation source (4);

Wherein, one of the ray source (4) and the first detector (6) is provided on the top of the frame (2); the ray source (4) and the first detector (6) The other one of) is movably provided at the bottom of the platform (1).
The radiation inspection system according to claim 1, wherein the ray source (4) is provided on the top of the frame (2); the first detector (6) is movably provided on the platform (1) )bottom of.
The radiation inspection system according to claim 1, wherein the first detector (6) is provided on the top of the frame (2); the ray source (4) is movably provided on the platform (1) )bottom of.
The radiation inspection system according to claim 1, comprising a second detector (5) provided on both sides of the frame (2) for receiving radiation emitted by the radiation source (4).
The radiation inspection system according to claim 1, wherein the platform (1) sequentially carries at least two objects (7) to be detected along a moving direction of the frame (2).
The radiation inspection system according to claim 1, wherein the frame (2) is straddled above the platform (1) via the outside of two opposite side walls of the platform (1).
The radiation inspection system according to claim 1, wherein the frame (2) is movably disposed on the top of the platform (1) as a whole.
The radiation inspection system according to claim 1, comprising a chassis (3) movably provided at the bottom of the platform (1), on which the ray source (4) or the first detector (6) is disposed. ).
The radiation inspection system according to claim 8, comprising a synchronization device, which connects the frame (2) and the chassis (3), to ensure synchronous movement of the frame (2) and the chassis (3).
The radiation inspection system according to claim 9, wherein:

The synchronization device includes a connecting member (81), a first end of which is connected to the frame (2), and a second end of which is connected to the chassis (3);

The platform (1) is provided with a slot or hole that allows the connecting piece (81) to pass through and move.
The radiation inspection system according to claim 9, wherein the synchronization device comprises:

A power unit (82) including a first output shaft and a second output shaft;

A first timing belt (83) is provided outside the platform (1) and is connected to the frame (2) for driving the frame (2) to move; the first output shaft is configured to connect the frame A first timing belt (83) to transmit power output by the power unit (82) to the first timing belt (83);

A second timing belt (84) is provided inside the platform (1) and is connected to the chassis (3) for driving the chassis (3) to move; the second output shaft is configured to connect the chassis A second timing belt (84) to transmit the power output by the power unit (82) to the second timing belt (84).
The radiation inspection system according to claim 9, wherein the synchronization device comprises:

A first power unit, provided in the frame (2);

A second power unit provided on the chassis (3); and

A controller, electrically connecting the first power device and the second power device, for sending signals to the first power device and the second power device to control the frame (2) and the chassis (3) Synchronous movement.
The radiation inspection system according to claim 8, comprising at least one of a first roller (22) and a second roller (31), wherein the first roller (22) is provided at the bottom of the frame (2) The second roller (31) is provided at the bottom of the chassis (3).
The radiation inspection system according to claim 8, comprising at least one of a first rail assembly and a second rail assembly, wherein the first rail assembly is provided on the frame (2) and the ground. Or between the frame (2) and the platform (1); the second guide rail assembly is provided between the chassis (3) and the ground.
The radiation inspection system according to claim 1, comprising identification means for identifying at least one of a license plate and a box number, said identification means being provided at an entrance of said platform (1).
The radiation inspection system according to claim 1, wherein the object to be detected (7) comprises a vehicle, a container, a suitcase or a package.