KR20020075931A - A Panel Type Vehicle fluoroscopy Device And Method Thereof - Google Patents

Abstract

PURPOSE: A panel type vehicle fluoroscopy device and method thereof is provided to easily and rapidly test a plurality of vehicles, while displaying shape of the large vehicle without distortion. CONSTITUTION: A panel type vehicle fluoroscopy device comprises light source boxes(220,230,240) each of which has a radiation source(250) for radiating radioactive rays toward a vehicle(500); a detection unit(400) for detecting radioactive rays passed through the vehicle; a converting unit for converting an electrical signal output from the detection unit into a video signal; and a computer(710) for controlling each light source box to sequentially emit radioactive rays. The converting unit includes the computer for receiving an electrical signal from the detection unit and generating a video signal regarding the shape of the vehicle; and monitors(715,725,735) for receiving video signals for the corresponding light source box from the computer, and displaying the received video signals.

Description

A panel type vehicle fluoroscopy device and method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a see-through device using radiation, and more particularly, to a panel-type vehicle see-through device capable of seeing vehicles such as passenger cars, vans and buses, and a method thereof.

1 is a perspective view of a conventional X-ray perspective apparatus installed in an airport or a harbor. As shown in FIG. 1, relatively small articles such as suitcases, suitcases, etc., which are directly carried by passengers, use the market value as shown in FIG. 1.

The bag 4 is constantly transported while being placed on the conveyor belt 5, and one side of the conveyor belt 5 is provided with an emission part 2 for emitting radiation and a light receiving part 3 for receiving it. The video signal from the light receiver 3 is transmitted to the monitor 1 so that the user can visually check what is inside the bag 4.

By the way, while the conventional marketplace is suitable for use in a relatively small object such as a bag, there is a disadvantage that the inspection is not suitable for a large cargo having a volume larger than that. Therefore, it was difficult to find out whether or not explosives, drugs, firearms, smugglers, etc. were contained in the large cargo. Until now, this customs clearance has been limited by the experience and the search dog's experience, so there is a limit that the deviation is severe and inaccurate.

In particular, when a large number of vehicles pass through airports, borders, military units, government offices, and public facilities, the interior, trunk and lower body floors of the vehicle were visually inspected. However, this conventional method has the disadvantage of being time-consuming and inaccurate. In the case of large vans and buses, there are many unidentified parts, which have been a great disadvantage for inspection.

Accordingly, the present invention has been made in order to solve the above problems, the first object of the present invention is a panel-type vehicle perspective apparatus capable of quickly inspecting a vehicle, such as a passenger car, a van, a bus, a cargo truck, and the like; To provide a way.

A second object of the present invention is to provide a panel-type vehicle perspective apparatus and method which can accurately display the shape of a large vehicle without distortion by using a plurality of radiation sources and a single detection plate.

An object of the present invention as described above, three to five source boxes 220, 230, 240 each containing a radiation source 250 so as to irradiate the radiation 325 toward the vehicle 500;

A detector 400 provided at one side of the source box 310 to detect radiation passing through the vehicle 500;

Conversion means for converting the electrical signal of the detector 400 into an image signal; And

A computer (710) for controlling the source boxes (220, 230, 240) to emit radiation sequentially; Including,

The conversion means,

The computer 710 which receives an electrical signal of the detection unit 400 corresponding to each source box to generate a video signal relating to the shape of the vehicle 500; And

The panel-type fluoroscopy device comprising a plurality of monitors 715, 725, and 735 for receiving and displaying a video signal of a corresponding source box from the computer 710 may be achieved.

And, the detection unit 400

A detector 410 which reacts with the incident radiation 325 to emit electrons;

An X-axis front end electronic device 430 for generating an X-axis electrical signal of the detector 410; And

It is possible to include; Y-axis shear electronic device 420 for generating an electrical signal in the Y-axis direction of the detector 410.

In addition, the object of the present invention as described above,

An initial step of stopping the vehicle 500 to be inspected at a designated position;

A first emission step of emitting radiation 325 from the first source box 220 toward the vehicle 500;

A first detection step of detecting the radiation 325 passing through the vehicle 500 by a detector 410 and converting the radiation 325 into an electrical signal;

A first generating step of closing the first source box 220 and inputting the electric signal to a computer 710 to generate a video signal;

A first display step of transmitting the video signal to a monitor (735) for display;

A second emission step of emitting radiation 325 from the second source box 230 toward the vehicle 500;

A second detection step of detecting the radiation 325 passing through the vehicle 500 by the detector 410 and converting the radiation 325 into an electrical signal;

A second generating step of closing the second source box 230 and generating a video signal by inputting the electrical signal to a computer 710;

A second display step of transmitting and displaying the video signal to a monitor (725);

A third emission step of emitting radiation 325 from the third source box 240 toward the vehicle 500;

A third detection step of detecting radiation 325 passing through the vehicle 500 by a detector 410 and converting the radiation 325 into an electrical signal;

A third generation step of closing the third source box 240 and generating a video signal by inputting the electrical signal to a computer 710; And

And a third display step of transmitting and displaying the video signal to the monitor 715. The method may also be achieved by a perspective method of a panel vehicle see-through device.

The electrical signals converted in the first, second, and third detection steps may be electrical signals in the X-axis direction and electrical signals in the Y-axis direction.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

1 is a perspective view of a conventional X-ray perspective apparatus,

2 is a perspective view of a panel vehicle perspective device according to an embodiment of the present invention,

3 is a plan view of the panel vehicle perspective view shown in FIG.

FIG. 4 is a schematic plan view of the detector of the panel type vehicle perspective apparatus shown in FIG. 2.

<Short Description of Main Reference Signs>

100: see-through device, 200: see-through part,

220: first sailor box, 230: second sailor box,

240: third source box, 250: radiation source,

325: radiation, 400: detection unit,

410: detector, 420: Y-axis shear electronic device,

430: X-axis shear electronic device, 500: vehicle,

710: computer, 715, 725, 735: monitor.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a panel vehicle perspective view device according to an embodiment of the present invention. As shown in FIG. 2, the see-through device 100 is largely composed of a see-through unit 200, a detector 400, and the like.

The see-through part 200 may be configured in a slightly larger size than the vehicle 500 having a length equal to or greater than the maximum bus length. A plurality of radiation sources 320 are provided inside to emit radiation (for example, high energy gamma rays) toward the vehicle 500. In addition, a viewing window 210 is provided on a side facing the vehicle 500.

The detector 400 is a portion where the radiation that has passed through the vehicle 500 arrives and is detected.

The vehicle 500 to be inspected moves and is positioned between the seeker 200 and the detector 400. The movement of the vehicle 500 is made by the driver, and during the inspection, the driver gets off and waits at a separate position.

3 is a plan view illustrating the panel vehicle perspective view of FIG. 2. As shown in FIG. 3, three source boxes 220, 230, and 240 are installed in a line in the see-through part 200. The radiation source 250 is provided inside each of the source boxes 220, 230, and 240. These source boxes 220, 230, 240 are spaced apart from the vehicle 500 at a predetermined position (ie, parallel to the longitudinal direction of the vehicle), and fixed to maintain the same distance from each other. Then, the emission of the radiation is controlled by the computer 710.

The source box 310 includes a radiation source 320 capable of emitting radiation such as X-rays, gamma rays, etc., and all other surfaces thereof are closed to emit radiation only in the direction of the vehicle 500. For example, when Co ⁶⁰ , which is a radioisotope, is used as the radiation source 320, gamma rays having energy of 1.17 MeV and 1.33 MeV are emitted.

The detection unit 400 is a panel type and has a height slightly higher than that of the vehicle 500, and the width is wider than the height (panel type). In addition, a detector 410 is provided inside.

In addition, the electrical signal output from each detection unit 400 is input to one computer 710. The computer 710 generates the shape of the object as a video signal using the input signal, and displays it on the connected monitors 715, 725, and 735, respectively. As shown in FIG. 3, the monitors 715, 725, and 735 are displayed with slightly different angles of view of the shape of the vehicle 500.

In this case, the image is configured to derive a gamma ray transmission image of 2 million pixels or more.

The computer 710 used an IBM compatible personal computer for real-time image signal processing, but it is possible to place as many computers as each source box for further improved high resolution and high speed image processing.

FIG. 4 is a schematic plan view of the detector of the panel type vehicle perspective apparatus shown in FIG. 2. The detector 422 is provided inside the detector 400. The detector 410 uses an electrode plate made of a material having a very high resistivity, and a thickness of about 2 to 3 mm is appropriate.

In addition, a Y-axis front end electronic device 420 for detecting a Y-axis electric signal is installed on one vertical side of the detector 410, and a pair of X-axis front end electronic devices for detecting an X-axis electric signal on one horizontal side thereof. 430 is installed. The X-axis front end electronic device 430 generates electrical signals by electrons detected in the plurality of signal processing strips arranged in the vertical direction, and the Y-axis front end electronic device 420 includes a plurality of signal processing strips arranged in the horizontal direction. The electrical signal is generated by the electrons detected at. When the electrical signals of the X and Y-axis front end electronic devices 420 and 430 are combined and processed by the computer 710, a two-dimensional image may be obtained.

Hereinafter, a detection method of the panel vehicle detecting apparatus according to the present invention will be described.

First, the vehicle 500 is transported and stopped between the seeker 200 and the detector 400.

The computer 710 then opens the first source box 220 to emit radiation 325. The emitted radiation 325 passes through the vehicle 500 and arrives at the detector 400. At this time, the arriving radiation 325 emits electrons from the detector 410, which are detected by the X- and Y-axis front end electronic devices 420 and 430 through the signal processing strip. The detected signals are combined by the computer 710 and converted into video images, and then displayed on the first monitor 735.

Then, the first source box 220 is closed and the second source box 230 is opened to display an image on the second monitor 725 in the same manner as described above. Then, the second source box 230 is closed and the third source box 240 is opened to display an image on the third monitor 715 in the same manner as described above. Therefore, the examiner can look at the monitor to know in three-dimensional image what is inside the vehicle 500.

In the experimental example, three radiation sources were used, the width of the signal processing strip of the detector 410 was about 0.8 mm, and the detector 410 used a quadruple gap type. At this time, the time resolution was less than 2 x 10 ^-9 seconds, and the spatial resolution was about 0.25 cm. Since it took about 60 seconds to search for one vehicle, it is possible to search for about 60 vehicles per hour.

When the inspection of one vehicle 500 is completed, the inspected vehicle 500 may be moved, and the next vehicle 500 may be moved to repeat the perspective inspection.

In the present invention, the case of using three sailor boxes is illustrated and described, but four, five, six or seven or more sailor boxes may be closely arranged as necessary.

In the embodiment of the present invention, three source boxes and three monitors are used, but when the video images of each source box are combined into one image, one image having a three-dimensional effect can be obtained. In this case, of course, only one monitor is needed.

Examples of the detector used in the present invention include a multi-gap gas detector using a material having high specific resistance, a detector using crystal, a semiconductor detector using silicon, and the like.

Such a market value of the present invention can be installed at the vehicle entrance of the border zone, airport, military units, public facilities, government offices, etc., through which a plurality of vehicles pass, so that efficient customs clearance can be performed.

As described above, according to the panel vehicle perspective view apparatus and the method according to the present invention, there is a feature that can be quickly and visually inspected a plurality of vehicles. In addition, by using a plurality of radiation sources and a single detection plate, there is an advantage of accurately displaying the shape of a large vehicle without distortion by stereo vision (Stereo-Vision).

In addition, even if weapons, drugs, and explosives are included in the vehicle, it can be quickly caught.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Claims (4)

Three to five source boxes 220, 230, and 240 each including a radiation source 250 so as to irradiate the radiation 325 toward the vehicle 500; A detector 400 provided at one side of the source box 310 to detect radiation passing through the vehicle 500; Conversion means for converting the electrical signal of the detector 400 into an image signal; And A computer (710) for controlling the source boxes (220, 230, 240) to emit radiation sequentially; Including, The conversion means, The computer 710 which receives an electrical signal of the detection unit 400 corresponding to each source box to generate a video signal relating to the shape of the vehicle 500; And And a plurality of monitors (715, 725, 735) for receiving and displaying a video signal of a corresponding source box from the computer (710). The method of claim 1, wherein the detection unit 400 A detector 410 which reacts with the incident radiation 325 to emit electrons; An X-axis front end electronic device 430 for generating an X-axis electrical signal of the gas detector 410; And And a Y-axis shear electronic device (420) for generating an electrical signal in the Y-axis direction of the detector (410). An initial step of stopping the vehicle 500 to be inspected at a designated position; A first emission step of emitting radiation 325 from the first source box 220 toward the vehicle 500; A first detection step of detecting the radiation 325 passing through the vehicle 500 by a detector 410 and converting the radiation 325 into an electrical signal; A first generating step of closing the first source box 220 and inputting the electric signal to a computer 710 to generate a video signal; A first display step of transmitting the video signal to a monitor (735) for display; A second emission step of emitting radiation 325 from the second source box 230 toward the vehicle 500; A second detection step of detecting the radiation 325 passing through the vehicle 500 by the detector 410 and converting the radiation 325 into an electrical signal; A second generating step of closing the second source box 230 and generating a video signal by inputting the electrical signal to a computer 710; A second display step of transmitting and displaying the video signal to a monitor (725); A third emission step of emitting radiation 325 from the third source box 240 toward the vehicle 500; A third detection step of detecting radiation 325 passing through the vehicle 500 by a detector 410 and converting the radiation 325 into an electrical signal; A third generation step of closing the third source box 240 and generating a video signal by inputting the electrical signal to a computer 710; And And a third display step of transmitting and displaying the video signal to a monitor (715). 4. The method of claim 3, wherein the electrical signals converted in the first, second, and third detection steps are electrical signals in the X-axis direction and electrical signals in the Y-axis direction.