CN112859066A - Remote human hidden dangerous article detector based on video imaging module - Google Patents
Remote human hidden dangerous article detector based on video imaging module Download PDFInfo
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- CN112859066A CN112859066A CN202110200654.9A CN202110200654A CN112859066A CN 112859066 A CN112859066 A CN 112859066A CN 202110200654 A CN202110200654 A CN 202110200654A CN 112859066 A CN112859066 A CN 112859066A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 15
- 231100001261 hazardous Toxicity 0.000 description 4
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
- G01S13/867—Combination of radar systems with cameras
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
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- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a remote human hidden dangerous goods detector based on a video imaging module, which comprises a millimeter wave radar module, a video imaging module and a display control module; the display control module controls the running states of the millimeter wave radar module and the video imaging module and processes and displays corresponding signals and data; the millimeter wave radar module and the video imaging module are respectively connected with the display control module through data connecting lines; the invention generates a transmitting local oscillator signal and a receiving local oscillator signal through the millimeter wave radar module, processes the received millimeter wave intermediate frequency signal, and then processes the millimeter wave intermediate frequency signal through the display control module to obtain accurate measured data.
Description
Technical Field
The invention relates to the field of dangerous article detectors, in particular to a remote human hidden dangerous article detector based on a video imaging module.
Background
At present, the terrorist activities in the international and domestic society are increasing, and the occurrence of terrorist activities can be effectively prevented by detecting dangerous articles carried by human bodies. Because the millimeter waves can effectively penetrate through clothes, dangerous goods hidden in the clothes of the human body can be detected by the millimeter waves. For non-cooperative objects, short-distance detection is often difficult to achieve, so that the application range of the instrument can be greatly expanded by realizing long-distance detection.
Based on such a demand, researchers have proposed a remote millimeter wave detector, whose main structure is composed of 11-VCO (voltage controlled oscillator) source, 12-6 frequency multiplier, 13-coupler, 14-detector 1, 15-low noise amplifier 1, 16-low noise amplifier 2, 17-detector 2, 18-detector 3, 19-control and display, as shown in fig. 1. In the detector, low-frequency electromagnetic waves emitted by a VCO source are multiplied to form millimeter waves, a part of the millimeter waves are coupled and output to an antenna, the millimeter waves are radiated to a human body through the antenna, the millimeter waves reflected by the human body are respectively received by a homopolar antenna and a cross-polar antenna, and reflected echoes are detected by a detector after passing through respective low-noise amplifiers. In the detection, when a dangerous article is carried by a human body, the echo of the human body is different from the echo when the dangerous article is not carried by the human body, and the detection of the dangerous article hidden by the human body in a long distance can be realized by utilizing the difference. In the practical use of the detector, because the millimeter waves are invisible and the wave beam range is limited, the detector is not clear enough for detection parts of different human bodies and different scenes, the difference of echo waves is not obvious enough under most conditions, the accuracy rate of the detector is low, and the detector cannot play a role in practical detection.
Disclosure of Invention
The invention provides a remote human hidden dangerous article detector based on a video imaging module, which can overcome the problems of undefined detection range and uncertain detection part of the traditional remote dangerous article detector and improve the accuracy of the detector.
The technical scheme of the invention is as follows:
a remote human hidden dangerous goods detector based on a video imaging module is characterized by comprising a millimeter wave radar module, a video imaging module and a display control module, wherein the video imaging module is used for acquiring image data of a front target to be detected in real time; the display control module and the frequency source are connected with the intermediate frequency processing assembly through data connecting lines, the frequency source and the intermediate frequency processing assembly transmit acquired signals to the display control module for processing, and the display control module controls the running state of the millimeter wave radar through data interaction with the frequency source and the intermediate frequency processing assembly; the display control module is connected with the video imaging module through a data connecting line, the video imaging module transmits image data collected in real time to the display control module for processing, and the display control module controls the running state of the video imaging module.
The millimeter wave radar module comprises a millimeter wave transmitting component, a millimeter wave receiving component I, a millimeter wave receiving component II, an active frequency source for controlling the transmission and the reception of millimeter waves and an intermediate frequency processing component; the frequency source and the intermediate frequency processing assembly are connected with the millimeter wave transmitting assembly, the millimeter wave receiving assembly I and the millimeter wave receiving assembly II through transmission lines.
The video imaging module comprises a camera and a lens, wherein the camera has the function of acquiring program imaging data, and the lens has the function of adjusting the imaging view and the imaging effect.
The display control module comprises a main controller and a display device.
The working principle of the invention is as follows:
and the video imaging module transmits the image data of the front target to be detected to the display control module in real time.
In the millimeter wave radar module, a frequency source and an intermediate frequency processing component are used for generating a transmitting local oscillator signal and receiving the local oscillator signal and processing an intermediate frequency signal transmitted by a first millimeter wave receiving component and a second millimeter wave receiving component, the millimeter wave transmitting component is used for transmitting a millimeter wave signal, and the first millimeter wave receiving component and the second millimeter wave receiving component are used for receiving a millimeter wave signal reflected by a target human body, converting the millimeter wave signal into the intermediate frequency signal and transmitting the intermediate frequency signal to the frequency source and the intermediate frequency processing component for processing.
The display control module controls the states of the millimeter wave radar module and the video imaging module, processes and displays the transmitted data, controls the millimeter wave radar module and the video imaging module through the main controller, processes the data, and displays the processed data through the display equipment. And the display control module processes the result after the measurement is finished and displays the result.
The invention has the following beneficial effects:
the invention can overcome the problems of undefined detection range and uncertain detection part of the traditional remote hazardous article detector, effectively carries out remote detection on the image data of the target to be detected through the millimeter wave signal of the millimeter wave radar module, and has higher accuracy compared with the traditional detector.
Drawings
Fig. 1 is a schematic diagram of a remote millimeter wave detector in the background art.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic diagram of an embodiment of the present invention.
Wherein the reference numerals are: 1-a display control module, 101-a main controller, 102-a display device, 2-a video imaging module, 201-a camera, 202-a lens, 3-a millimeter wave radar module, 301-a millimeter wave transmitting component, 302-a millimeter wave receiving component I, 303-a millimeter wave receiving component II, 304-a frequency source and intermediate frequency processing component and 4-a human body to be detected; 11-VCO source, 12-6 frequency multiplier, 13-coupler, 14-detector 1, 15-low noise amplifier 1, 16-low noise amplifier 2, 17-detector 2, 18-detector 3, 19-control and display.
Detailed Description
As shown in fig. 2, the structure of the present invention is as follows:
a remote human hidden dangerous goods detector based on a video imaging module comprises a millimeter wave radar module 3, a video imaging module 2 used for collecting image data of a front target to be detected in real time and a display control module 1 used for displaying a measurement processing result; the display control module 1 and the frequency source are connected with the intermediate frequency processing assembly through a data connecting line, the frequency source and the intermediate frequency processing assembly transmit the acquired signals to the display control module 1 for processing, and the display control module 1 controls the running state of the millimeter wave radar through data interaction with the frequency source and the intermediate frequency processing assembly; the display control module 1 and the video imaging module 2 are connected through a data connecting line, the video imaging module 2 transmits image data collected in real time to the display control module 1 for processing, and the display control module 1 controls the running state of the video imaging module 2.
The millimeter wave radar module 3 comprises a millimeter wave transmitting component 301, a millimeter wave receiving component I302, a millimeter wave receiving component II 303 and an active frequency source and intermediate frequency processing component 304 for controlling millimeter wave transmitting and receiving; the frequency source and the intermediate frequency processing assembly are connected with a millimeter wave transmitting assembly 301, a millimeter wave receiving assembly I302 and a millimeter wave receiving assembly II 303 through transmission lines.
The video imaging module 2 comprises a camera 201 and a lens 202, wherein the camera 201 is used for acquiring program imaging data, and the lens 202 is used for adjusting an imaging view and an imaging effect.
The display control module 1 includes a main controller 101 and a display device 102.
Through the structure, the following specific implementation modes are realized:
after the detector is started and initialized, the human body 4 to be detected stands right in front of the detector, and the distance is generally several meters to ten and several meters, as shown in fig. 3.
After the detection is started, the display control module 1 sends a measurement starting command to the millimeter wave radar module 3 and the video imaging module 2, the video imaging module 2 starts to work, images a front human body and a test scene and transmits data back to the display control module 1, and the data records information such as the position and posture of the detected human body; the frequency source and the intermediate frequency processing component in the millimeter wave radar module 3 start to work after receiving the command, the millimeter wave transmitting component 301 connected with the millimeter wave transmitting component sends out a millimeter wave signal, and then the first millimeter wave receiving component 302 and the second millimeter wave receiving component 303 receive the echo signal, and the echo signal is transmitted back to the frequency source and the intermediate frequency processing component through a connecting line, and is transmitted to the display control module 1 for processing after being processed by the frequency source and the intermediate frequency processing component, so that the detection result of the millimeter wave radar module 3 is obtained.
Display and control module 1 will be handled from millimeter wave radar module 3 and video imaging module 2 received data, can judge whether the target that detects has the carry hazardous articles according to millimeter wave radar module 3's echo information, can sign the detection area according to video imaging module 2's data, combines both, can detect whether human specific area contains hazardous articles.
When the radar detects dangerous goods, the detector can perform warning identification in a detection area acquired by the video imaging module 2; when the video imaging module 2 adopts the camera 201 with the infrared imaging function, the detector can perform testing at night or under the condition of poor light; when the lens 202 with different focal lengths is adopted, the detector can detect human targets with different distances; when the millimeter wave emitting component 301, the millimeter wave receiving component one 302, the millimeter wave receiving component two 303 and the video imaging module 2 in the millimeter wave radar module 3 are fixed on the adjustable displacement table, the hazardous article detector can detect different parts of a human body or realize whole-body scanning by means of the displacement table; when the video imaging module 2 adopts an intelligent algorithm to detect the contour of a human target, the dangerous goods detector can be combined with an adjustable displacement table to realize automatic scanning of key parts of a human body.
Claims (6)
1. A remote human hidden dangerous goods detector based on a video imaging module is characterized by comprising a millimeter wave radar module (3), a video imaging module (2) for acquiring image data of a front target to be detected in real time and a display control module (1) for displaying a measurement processing result;
the display control module (1) is connected with the millimeter wave radar module (3) through a data connecting line, signals of the millimeter wave radar module (3) are output to the display control module (1) through the data connecting line, and the display control module (1) controls the running state of the millimeter wave radar module (3);
the display control module (1) is connected with the video imaging module (2) through a data connecting line, image data of the video imaging module (2) is output to the display control module (1) through the data connecting line, and the display control module (1) controls the running state of the video imaging module (2).
2. The video imaging module-based remote human hidden dangerous goods detector as claimed in claim 1, wherein said millimeter wave radar module (3) comprises a millimeter wave transmitting component (301), a millimeter wave receiving component one (302), a millimeter wave receiving component two (303), and an active frequency source and intermediate frequency processing component (304) for controlling the transmission and reception of millimeter waves; the frequency source and the intermediate frequency processing assembly are connected with the millimeter wave transmitting assembly (301), the millimeter wave receiving assembly I (302) and the millimeter wave receiving assembly II (303) through transmission lines.
3. The video imaging module-based remote human body hidden dangerous goods detector as claimed in claim 2, wherein the display control module (1) and the frequency source are connected with the intermediate frequency processing assembly through data connection lines, and the frequency source and the signal output end of the intermediate frequency processing assembly are connected to the display control module (1).
4. The video imaging module-based remote human hidden dangerous goods detector as claimed in claim 1, wherein said video imaging module (2) comprises a camera (201) for collecting program imaging data and a lens (202) for adjusting imaging field and imaging effect.
5. The remote human hidden dangerous goods detector based on video imaging module as claimed in claim 1, wherein said display control module (1) comprises a main controller (102) and a display device (102).
6. The remote human hidden dangerous goods detector based on video imaging module as claimed in claim 1, wherein the detector works in the following way:
the video imaging module (2) transmits image data of a front target to be detected to the display control module (1) in real time;
in the millimeter wave radar module (3), a frequency source and an intermediate frequency processing component are used for generating a transmitting local oscillator signal and a receiving local oscillator signal and processing an intermediate frequency signal transmitted by a first millimeter wave receiving component (302) and a second millimeter wave receiving component (303), a millimeter wave transmitting component (301) is used for transmitting a millimeter wave signal, and the first millimeter wave receiving component (302) and the second millimeter wave receiving component (303) are used for receiving a millimeter wave signal reflected by a target human body and converting the millimeter wave signal into an intermediate frequency signal to be transmitted to the frequency source and the intermediate frequency processing component for processing;
the display control module (1) controls the states of the millimeter wave radar module (3) and the video imaging module (2) and processes and displays transmitted data, the main controller (102) controls the millimeter wave radar module (3) and the video imaging module (2) and processes the data, and the display equipment displays the processed data; and the display control module (1) processes results after the measurement is finished and displays the results.
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| CN202110200654.9A CN112859066A (en) | 2021-02-23 | 2021-02-23 | Remote human hidden dangerous article detector based on video imaging module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114185035A (en) * | 2021-10-15 | 2022-03-15 | 中国工程物理研究院电子工程研究所 | Machine learning target detection method for human hidden dangerous article detector |
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