CN109597140A - Double flat-bed scanning millimeter wave human body security check systems - Google Patents
Double flat-bed scanning millimeter wave human body security check systems Download PDFInfo
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- CN109597140A CN109597140A CN201910062987.2A CN201910062987A CN109597140A CN 109597140 A CN109597140 A CN 109597140A CN 201910062987 A CN201910062987 A CN 201910062987A CN 109597140 A CN109597140 A CN 109597140A
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- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 21
- 238000003384 imaging method Methods 0.000 claims description 6
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- 230000006378 damage Effects 0.000 description 3
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- 208000014674 injury Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/005—Prospecting or detecting by optical means operating with millimetre waves, e.g. measuring the black losey radiation
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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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- 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
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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Abstract
The invention discloses a kind of double flat-bed scanning millimeter wave human body security check systems, are related to safety check apparatus technical field.The safe examination system ontology includes braced frame, the front, rear, left and right side of the braced frame is each provided with the plate type antenna scanning element being vertically arranged, it is greater than the width of the plate type antenna scanning element of front and rear sides positioned at the width of the plate type antenna scanning element of the left and right sides, the plate type antenna scanning element of relatively wide two is used to be scanned human body area biggish front and back sides detection, and relatively narrow two plate type antenna scanning elements are for being scanned detection to the lesser left and right side of human body area.The safe examination system can carry out complete detection to the surrounding of human body, can effectively prevent hiding for prohibited items.
Description
Technical field
The present invention relates to safety check apparatus technical field more particularly to a kind of double flat-bed scanning millimeter wave human body security check systems.
Background technique
Millimeter wave refers to that electromagnetic wave of the frequency within the scope of 26.50GHz-300GHz, millimeter wave naturally have to nonmetallic
With the penetrability of apolar substance, it is highly suitable for detecting human body, detects the various danger hidden among human skin and clothes
Dangerous product.There is millimeter wave human safety will not make this is because the photon energy of millimeter wave is very small to human body cell simultaneously
It is safe to human body at the injury of ionization property.Compared to the microwave frequency band of low frequency, millimetre wavelength is shorter, hereby has high-resolution
Characteristic.In the numerous applications of millimeter wave, at present with human security it is closely bound up be exactly millimeter wave safety check technology.Millimeter wave human body
Safety check technology is the penetrability special to ordinary clothing material (cotton, fiber crops, chemical fibre etc.) using millimeter wave, has filled up human body safety check neck
The blank in domain is the important supplement to current human's safety check means.
Currently used safety detection means are metal detection door and X-ray machine, and metal detections can not be detected effectively except gold
Contraband outside category, typical dangerous material can not visited (sintex, free-flowing dynamite, liquid explosives, gasoline, diesel kerosene), elicited
Out be not dangerous material (mobile phone, steel Beng, key, metal toiletry), X-ray, can be thin to human body since its photon energy is too big
Born of the same parents cause the injury of ionization property, and human body harmfulness is very big.America and Europe has disabled at present.Therefore millimeter wave safety check has very big potential market
Value.
The safe examination system of millimeter wave is broadly divided into two major classes at present, and one kind is passive type safe examination system, and one kind is active
Safe examination system.Passive type safety check feature: first is that it is non-contact, without searching the person, respect tested personnel's individual privacy；Second is that detection efficiency
Height, speed is fast, without stop, and tested personnel normal walking in specified security check passage is greatly improved by that can complete safety check
Safety check efficiency；Third is that safety is radiationless, similar ordinary camera, monitoring camera do not generate electromagnetism, ionising radiation, to human body
It is harmless.The disadvantage is that resolution ratio is not high, signal-to-noise ratio is not high.Active safe examination system is the millimeter by actively emitting doses
Wave (in tolerance interval dosage), is imaged human body, and for passive type safety check instrument, signal-to-noise ratio is higher.Though having certain
Dose of radiation, but since millimeter wave photon energy is small, the injury of ionization property will not be caused to human body cell.
In millimeter wave human body security check system active at present, using U.S.'s L3 system as the cylinder scanning system and moral of representative
The QPS system of Guo Luode Schwarz company is representative, and U.S.'s L3 system is that a cylinder scanning divides in the front and back of people
It is scanned at two semicircles.The responsible scanning area of each scanning array is 180 °, and sweep time is about 2 seconds.System, Germany
System is flat-bed scanning, i.e., respectively has a millimeter wave transceiving array wall in the front and back of people.But in actual application,
Since only former and later two directions can be scanned, causes personal side to scan blind spot of appearing, cannot detect whether personal side is taken
The information such as band any contraband.
Summary of the invention
The technical problem to be solved by the present invention is to how provide one kind to carry out complete detection to the surrounding of human body
Double flat-bed scanning millimeter wave human body security check systems.
In order to solve the above technical problems, the technical solution used in the present invention is: a kind of double flat-bed scanning millimeter wave human bodies
Safe examination system, including millimeter wave human body security check system ontology, it is characterised in that: the safe examination system ontology includes braced frame,
The front, rear, left and right side of the braced frame is each provided with the plate type antenna scanning element being vertically arranged, and is located at left and right
The width of the plate type antenna scanning element of two sides is greater than the width of the plate type antenna scanning element of front and rear sides, relatively wide
Two plate type antenna scanning elements for being scanned detection, relative narrower to the biggish front and back sides of human body area
Two plate type antenna scanning elements for being scanned detection to the lesser left and right side of human body area.
A further technical solution lies in: the safe examination system ontology includes braced frame, four plate type antenna scannings
Unit and central control unit；The plate type antenna scanning element is connect with the central control unit, concurrent for generating
Millimeter-wave signal required for checked object is sent, the echo-signal of checked object return is received and processed, obtains digital intermediate frequency letter
Number；The central control unit is used to be arranged the control parameter of the plate type antenna scanning element, and in received number
Frequency signal carries out imaging, suspicious item identification and display.
A further technical solution lies in: the plate type antenna scanning element includes shell, is provided in the shell
The track being vertically arranged, turntable driving platform and millimeter-wave signal transceiver machine are provided on the track, and the scanning is driven
Moving platform is used to install and the distance parameter for driving the millimeter wave transceiving all-in-one machine to be arranged according to central control unit and movement
Directioin parameter moves along a straight line along track；
The millimeter-wave signal transceiver machine includes scanning imagery array, and the scanning imagery array is for emitting millimeter wave letter
Number and receives echo-signal；Millimeter wave transceiving module is connected with the scanning imagery array, including tested for generating and sending
The transmitting link of millimeter-wave signal required for object, and the echo-signal for receiving checked object return, and will be described
Echo-signal and transmitting signal are mixed, and the receives link of analog if signal is obtained；Signal processing module, with the millimeter
Wave transceiver module is connected, and for handling the analog if signal, obtains digital medium-frequency signal；First communication module,
It is connect with the signal processing module, for sending the digital medium-frequency signal to central control unit and receiving center control dress
The control instruction set.
A further technical solution lies in: the turntable driving platform includes third communication module, electric machine controller, servo
Driver and servo motor, the third communication module is bi-directionally connected with the central control unit, for receiving in described
The control command that centre control device passes down, and receive the information of electric machine controller upload, the electric machine controller and the third
Communication module connection, for handling the received control command of third communication module；The servo-driver and institute
The control output end connection of electric machine controller is stated, the control command for passing down according to electric machine controller controls motor action.
A further technical solution lies in: the central control unit includes second communication module, the second communication mould
Block is bi-directionally connected with control module, for receiving the information of turntable driving platform and the upload of millimeter-wave signal transceiver machine simultaneously
Control information is sent to turntable driving platform and millimeter-wave signal transceiver machine；Key module is defeated with the control module
Enter end connection, is used for input control order；The output end of control module and the signal input part of image processing module connect, image
The output end of processing module is connect with the input terminal of described image display module, and the data after image processing module pass through institute
Image display is stated to be shown；Alarm module is connect with the signal output end of the control module, in the control
Alarm signal is issued under the control of module.
The beneficial effects of adopting the technical scheme are that human body security check system of the present invention is in existing safety check
On the basis of two plate type antenna scanning elements of system, one is each side placed in the side for the personnel of being detected and is put down
Patcho antenna scanning element carries out detection imaging for the side to human body, can be effectively to the lesser left and right of human body area
Side is detected, and the carrying of prohibited items is prevented.The system is compatible with the safe examination system of existing mainstream on the market, only need to be in side
Face is the one image scanning array of each side increase for the personnel that are detected；Can four direction all around to human body it is same
When be scanned imaging, increased costs are compared with existing system increase about 15%, therefore cost is relatively low.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the partial structure diagram of system described in the embodiment of the present invention；
Fig. 2 is the functional block diagram of system described in the embodiment of the present invention；
Fig. 3 is the functional block diagram of plate type antenna scanning element in system described in the embodiment of the present invention；
Wherein: 1, track；2, plate type antenna scanning element.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
As shown in Figure 1, the embodiment of the invention discloses a kind of double flat-bed scanning millimeter wave human body security check systems, including millimeter
Wave human body security check system ontology, the safe examination system ontology include braced frame 1, the front, rear, left and right side of the braced frame 1
It is each provided with the plate type antenna scanning element 2 being vertically arranged, the plate type antenna scanning element 2 positioned at the left and right sides
Width is greater than the width of the plate type antenna scanning element 2 of front and rear sides.The plate type antenna scanning of relatively wide two
Unit 2 for being scanned detection to the biggish front and back sides of human body area, sweep by relatively narrow two plate type antennas
Unit 2 is retouched for being scanned detection to the lesser left and right side of human body area.
Further, as depicted in figs. 1 and 2, the safe examination system ontology includes 1, four plate type antenna of braced frame
Scanning element 2 and central control unit；The plate type antenna scanning element 1 is connect with the central control unit, for giving birth to
At and send millimeter-wave signal required for checked object, receive and process checked object return echo-signal, obtain number
Intermediate-freuqncy signal；The central control unit is used to be arranged the control parameter of the plate type antenna scanning element, and to received
Digital medium-frequency signal carries out imaging, suspicious item identification and display.
Further, it as shown in figure 3, the plate type antenna scanning element includes shell 3, is provided in the shell 3
The track 4 being vertically arranged is provided with turntable driving platform 5 and millimeter-wave signal transceiver machine 6 on the track 4, described to sweep
Retouch the distance parameter that driving platform 5 is used to install and the millimeter wave transceiving all-in-one machine 6 is driven to be arranged according to central control unit
It moves along a straight line with moving direction parameter along track 4.
As shown in Fig. 2, the millimeter-wave signal transceiver machine 6 includes scanning imagery array, the scanning imagery array
For emitting millimeter-wave signal and receives echo-signal；Millimeter wave transceiving module is connected with the scanning imagery array, including with
In the transmitting link for generating and sending millimeter-wave signal required for checked object, and for receiving returning for checked object return
Wave signal, and the echo-signal and transmitting signal are mixed, obtain the receives link of analog if signal；Signal processing
Module is connected with the millimeter wave transceiving module, for handling the analog if signal, obtains digital intermediate frequency letter
Number；First communication module is connect with the signal processing module, for sending the digital medium-frequency signal to central control unit
And receive the control instruction of central control unit.
As shown in Fig. 2, the turntable driving platform include third communication module, electric machine controller, servo-driver and
Servo motor, the third communication module is bi-directionally connected with the central control unit, for receiving the central control unit
The control command passed down, and the information of electric machine controller upload is received, the electric machine controller and the third communication module connect
It connects, for handling the received control command of third communication module；The servo-driver and the motor control
The control output end of device connects, and the control command for being passed down according to electric machine controller controls motor action.
As shown in Fig. 2, the central control unit includes second communication module, the second communication module and control module
It is bi-directionally connected, for receiving the information of turntable driving platform and the upload of millimeter-wave signal transceiver machine and being put down to turntable driving
Platform and millimeter-wave signal transceiver machine send control information；Key module is connect with the input terminal of the control module, is used
In input control order；The output end of control module and the signal input part of image processing module connect, image processing module
Output end is connect with the input terminal of described image display module, and the data after image processing module are shown by described image
Module is shown；Alarm module is connect with the signal output end of the control module, for the control in the control module
Lower sending alarm signal.
The K/Ka wave band receive-transmit system of 24GHz-32GHz can be used using superhet mode in the safe examination system, wherein
In attached drawing 1, the plate type antenna scanning element 2 of the left and right sides is horizontally disposed using scanning array, by mechanical scanning vertical
Personnel are scanned on direction, the plate type antenna scanning element 2 of front and rear sides is equally horizontally disposed using scanning array, leads to
Mechanical scanning is crossed in vertical direction to be scanned personnel.Entire scanning array is swept using electronic switch in the horizontal direction
It retouches, mechanical scanning is used in vertical direction, the imaging time of entire scanning array is about 2 seconds.
In system work, four plate type antenna scanning elements in attached drawing 1, wherein the plate in left side and front side
Formula antenna scanning unit is scanned human body using top-down mode, the plate type antenna scanning element of right side and rear side
Human body is scanned using mode from bottom to top.Each scanning imagery array is centainly measured to detected personnel transmitting
Millimeter wave, generally 1mW or so, millimeter wave are reflected by receiving human body surface by aerial radiation to human body surface
Millimeter-wave signal is parsed signal is reflected by receiving circuit, after digital conversion and image procossing, forms human body
Millimeter-wave image.
Claims (5)
1. a kind of double flat-bed scanning millimeter wave human body security check systems, including millimeter wave human body security check system ontology, it is characterised in that:
The safe examination system ontology includes braced frame (1), and the front, rear, left and right side of the braced frame (1) is each provided with one and erects
The plate type antenna scanning element (2) being directly arranged, before being greater than positioned at the width of the plate type antenna scanning element (2) of the left and right sides
The width of the plate type antenna scanning element (2) of two sides afterwards, the plate type antenna scanning element (2) of relatively wide two are used
In being scanned detection, relatively narrow two plate type antenna scanning elements to the biggish front and back sides of human body area
(2) for being scanned detection to the lesser left and right side of human body area.
2. double flat-bed scanning millimeter wave human body security check systems as described in claim 1, it is characterised in that: the safe examination system sheet
Body includes braced frame (1), four plate type antenna scanning elements (2) and central control unit；The plate type antenna scanning
Unit (1) is connect with the central control unit, for generating and sending millimeter-wave signal required for checked object, is received simultaneously
The echo-signal that checked object returns is handled, digital medium-frequency signal is obtained；The central control unit is for being arranged the plate
The control parameter of formula antenna scanning unit, and imaging, suspicious item identification and display are carried out to received digital medium-frequency signal.
3. double flat-bed scanning millimeter wave human body security check systems as claimed in claim 2, it is characterised in that: the plate type antenna
Scanning element includes shell (3), is provided with the track (4) being vertically arranged in the shell (3), is provided on the track (4)
Turntable driving platform (5) and millimeter-wave signal transceiver machine (6), the turntable driving platform (5) is for installing and driving institute
State distance parameter that millimeter wave transceiving all-in-one machine (6) is arranged according to central control unit and moving direction parameter along track (4) into
Row linear motion；
The millimeter-wave signal transceiver machine (6) includes scanning imagery array, and the scanning imagery array is for emitting millimeter
Wave signal and receives echo-signal；Millimeter wave transceiving module is connected with the scanning imagery array, including for generating and sending
The transmitting link of millimeter-wave signal required for checked object, and the echo-signal for receiving checked object return, and will
The echo-signal and transmitting signal are mixed, and the receives link of analog if signal is obtained；Signal processing module, and it is described
Millimeter wave transceiving module is connected, and for handling the analog if signal, obtains digital medium-frequency signal；First communication mould
Block is connect with the signal processing module, for sending the digital medium-frequency signal to central control unit and receiving central control
The control instruction of device processed.
4. double flat-bed scanning millimeter wave human body security check systems as claimed in claim 3, it is characterised in that: the turntable driving is flat
Platform includes third communication module, electric machine controller, servo-driver and servo motor, the third communication module and it is described in
Centre control device is bi-directionally connected, the control command passed down for receiving the central control unit, and is received on electric machine controller
The information of biography, the electric machine controller are connect with the third communication module, for the received control of third communication module
System order is handled；The servo-driver is connect with the control output end of the electric machine controller, for according to motor control
The control command that device processed passes down controls motor action.
5. double flat-bed scanning millimeter wave human body security check systems as claimed in claim 3, it is characterised in that: the center control dress
Set including second communication module, the second communication module is bi-directionally connected with control module, for receive turntable driving platform with
And it the information that uploads of millimeter-wave signal transceiver machine and is sent to turntable driving platform and millimeter-wave signal transceiver machine
Control information；Key module is connect with the input terminal of the control module, is used for input control order；The output end of control module
It is connect with the signal input part of image processing module, the output end of image processing module and the input terminal of described image display module
Connection, the data after image processing module are shown by described image display module；Alarm module and the control
The signal output end of module connects, for issuing alarm signal under the control of the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910062987.2A CN109597140A (en) | 2019-01-23 | 2019-01-23 | Double flat-bed scanning millimeter wave human body security check systems |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910062987.2A CN109597140A (en) | 2019-01-23 | 2019-01-23 | Double flat-bed scanning millimeter wave human body security check systems |
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| CN109597140A true CN109597140A (en) | 2019-04-09 |
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| CN201910062987.2A Pending CN109597140A (en) | 2019-01-23 | 2019-01-23 | Double flat-bed scanning millimeter wave human body security check systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113687436A (en) * | 2021-07-01 | 2021-11-23 | 博微太赫兹信息科技有限公司 | Double-view-angle push-sweeping type terahertz human body imaging equipment |
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| US20120307967A1 (en) * | 2011-06-06 | 2012-12-06 | Steven Winn Smith | Reduced Width Body Scanner |
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