CN110297281A - Millimeter wave safety check cabin system and safety inspection method - Google Patents
Millimeter wave safety check cabin system and safety inspection method Download PDFInfo
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Abstract
The invention discloses a kind of millimeter wave safety check cabin system and safety inspection methods, including safety check cabin, linear array scanning unit, mechanical scanning mechanism, signal acquisition process module, control module, imaging display module and automatic identification module；Safety check cabin includes cabin, entrance and outlet；Detection zone is formed in safety check cabin；Linear array scanning unit includes multiple Millimeter-Wave Sources, multiple millimeter wave detectors and main body；Millimeter-Wave Source and millimeter wave detector are alternatively arranged into the front and back that array structure is installed on main body；Mechanical scanning mechanism simultaneously can drive linear array scanning unit above and below entrance or move left and right；Signal acquisition process module connects millimeter wave detector；Control module connects mechanical scanning mechanism；Display module connection signal acquisition processing module, control module and automatic identification module is imaged.The present invention uses synthetic aperture imaging principle and thinned array, and structure is simply at low cost；Using safety check cabin structure, safety check fluency and the safety of security staff have been ensured.
Description
Technical field
The present invention relates to safety check technical fields, more particularly, to a kind of millimeter wave safety check cabin system and safety inspection method.
Background technique
With sharply increasing for large-scale public place flow of the people and terrorist activity, the demand of human body safety check is growing.But
At present in the public places such as airport, station main to the widely used safety detection means of human body still metal detector, ion
Spectrometer and X ray tester.Metal detector is only able to detect the metal of human body carrying, and ion spectrometer is mainly for detection of people
Whether body carries explosive, and X ray tester is mainly used for detecting personal belongings article etc., can not to human body into
Row detection.Therefore, reliably efficiently human body safety check technical research has obtained widely paying attention to new type of safe.Wherein millimeter involves too
Hertz wave technology is increasingly becoming research hotspot in recent years, is applied to human body safety check field.Millimeter involves THz wave light itself
Sub- energy is low, to human body almost without harm, has preferable penetrability to materials such as textile, leathers, readily available higher
Spatial resolution.
For this application trend, application No. is 201710778390.9, entitled " active Terahertz safety check imaging method
And system " patent of invention propose it is a kind of using THz wave carry out safety check method and system.The patent is used with terahertz
Hereby source actively emits terahertz emission, band-like focus beam one-dimensional scanning, the received mode of linear array terahertz detector, complete
At the irradiation and scanning of entire objective plane, achieve the purpose that target imaging and inspection.But it is visited needed for this method and system
There are many survey device quantity, and since current THz devices are expensive, system cost is high, it is difficult to promote.Application number thus
It is 201610262003.1, the patent of invention of entitled " safe examination system and method for 3D hologram imaging " proposes a kind of use
The millimeter wave safe examination system and method for rotary scanning mode.The patent is treated by the way of the scanning of millimeter wave antenna array rotation
It examines human body and realizes three-dimensional imaging, achieve the purpose that target imaging and inspection.Although reducing probe unit cost, the party
Method and system there are the shortcomings that it is also very obvious: the time is expended using the method for rotary scanning, uncomfortable noise is made us in generation, uses
Family experience is very poor.
In addition to this, application No. is 201610353555.3, entitled " a kind of microwave and millimeter wave human body security check system and peace
Detecting method " patent of invention also proposed a kind of millimeter wave safe examination system that similar safety check is escalator-type, this system motion side
Formula makes moderate progress, lower noise.But it uses open space security action, once tested personnel conceal dangerous material at it and are found
Shi Keneng is revolted using extreme means, can bring huge security threat to security staff's even average traveler, not have safety check
Practicability.
In addition, Patent No. 201610829046.3, it is entitled " it is a kind of quickly through formula millimeter wave human body security check system and
Method " it needs to be spaced in security check passage, tilt four sets of millimeter wave detectors of installation and two sets of infrared detection devices, it is logical to safety check
The length requirement in road is high, and occupied space is big, and structure is complicated, and manufacturing cost is high；And the tilt angle requirement of millimeter wave detector
It is very high, the slightly deviation accuracy that just affects detection.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides that a kind of structure is simple, and use is safe, can guarantee that measurement is accurate
The millimeter wave safe examination system and safety inspection method of property.
To achieve the goals above, the invention adopts the following technical scheme: a kind of millimeter wave safety check cabin system, including
Safety check cabin, including cabin, an entrance and at least one outlet；The detection for disposing personnel to be measured is formed in safety check cabin
Area；
Linear array scanning unit set on inlet；The linear array scanning unit includes multiple Millimeter-Wave Sources, the spy of multiple millimeter waves
Survey device and main body；The main body have towards behind area to be checked and with oppose below before, the Millimeter-Wave Source and millimeter
Wave detector is alternatively arranged into the front and back that array structure is installed on main body；
Mechanical scanning mechanism set on inlet, mechanical scanning mechanism connection linear array scanning element can simultaneously drive linear array to sweep
Unit is retouched above and below entrance or is moved left and right；
Signal acquisition process module connects millimeter wave detector, can acquire and handle millimeter wave detector signal；
Connect the control module of mechanical scanning mechanism；
Display module, connection signal acquisition processing module is imaged, and signal carries out image reconstruction synthesis three to treated
Image is tieed up, and is differently shown for different objects, the imaging display module link control module；
Automatic identification module, connection imaging display module, and to obtain image data carry out artificial intelligence operation, automatically into
The judgement prompt of row prohibited items.
Linear array scanning is realized by the drive linear array scanning unit of the mechanical scanning mechanism of inlet, it is complete using synthetic aperture
Image-forming principle is ceased, the safe examination system and method for the imaging of millimeter wave scanning probe are completed to human body to be checked；The present invention is using translation
Formula scanning, mechanical structure is simple, and user smoothly smooth can complete body scan, greatly without excessive prompt and touch turn
Improve user experience and percent of pass；Millimeter wave and millimeter wave detector, Jin Erke are equipped in the front and back of main body
It stands to human body preceding scans before entrance, to human body followed by scanning after entrance entrance；Using closed safety check cabin structure,
The safety that ensure that security staff reduces system cost using Sparse Array structure, development to millimeter wave safety check technology and pushes away
It is wide significant；And judging whether that scanning is completed by linear array scanning unit shift position, scanning speed is fast, high-efficient；
Furthermore structure is simple, and manufacturing cost is low；It can be improved on existing section structure, energy-saving and environmental protection；Furthermore in use,
Then personnel to be measured can stand at the domain scanning back side to be measured in surface sweeping front before entrance.
Further, the metal detection plate stood for personnel to be measured is equipped in the detection zone, which connects
It is connected to dynamic identification module.Can overcome the disadvantages that can not be by the loophole of millimeter wave Scanning Detction sole.
Further, the mechanical scanning mechanism is set to the top or side of entrance.Mechanical scanning mechanism can be pacified
It mounted in access opening top, for example is designed to Scroll, realizes the translation scanning of up and down direction；Mechanical scanning mechanism can also be mounted on
It on the left of entrance, for example is designed to door-sliding, realizes the translation scanning of left and right directions.
Further, the outlet includes that the safety check that passes through for the personnel to be measured of safety check qualification exports and unqualified for safety check
Personnel to be measured pass through reinspection outlet.Two outlets are greatly improved current rate.
Further, the Millimeter-Wave Source and millimeter wave detector are alternatively arranged into period relatively prime sparse array structure, tool
Body arrangement mode are as follows: Millimeter-Wave Source number is N1, and millimeter wave detector number is N2, and array period length is D, then N1N2 is mutual
Matter, the array element spacing of Millimeter-Wave Source are D/N1, and the array element spacing of millimeter wave detector is D/N2.
In addition, including the following steps: the present invention also provides a kind of safety inspection method in millimeter wave safety check cabin
(a) preparation stage: personnel to be tested is guided to standing before the entrance of safety check, faces mechanical scanning by activation system
It is motionless that mechanism is kept fixed posture；
(b) front scan: mechanical scanning mechanism is controlled by control module, linear array scanning unit or more or left and right is driven to move
Dynamic to carry out translation scanning, the millimeter wave that Millimeter-Wave Source issues scans personnel to be measured, the millimeter wave of personnel's reflection or scattering to be measured
Signal is received by millimeter wave detector, and signal acquisition process module carries out the received millimeter-wave signal of millimeter wave detector institute
Acquisition process；
(c) back scan: after the completion of above-mentioned steps (b), personnel to be measured enter safety check cabin from entrance, stand on detection zone
It is interior, it is motionless that posture is kept fixed in face of mechanical scanning mechanism；It repeats step (b), completes the millimeter wave to the personnel back side to be measured
Scanning imagery；
(d) image synthesizes: after completing above-mentioned steps (c), treated to signal acquisition process module for imaging display module
All signals are synthesized, and the panoramic picture of personnel's tow sides to be measured is spliced into, and then are synthesized by imaging display module to be checked
Human body three-dimensional image is differently shown for different objects；
(e) automatic identification: intelligent algorithm processing is carried out according to image is obtained, the standard image data library with contraband
It compares, the information and safety instruction of identification is provided by automatic identification module.
The above method can efficiently accomplish public arena and work the safety check of human body, and reduce false detection rate, missing inspection as far as possible
Under the premise of rate, the dignity of personnel to be measured has been ensured well, and testing cost is low, safety check information collection is comprehensive, and detection is quasi-
True property is high, is particularly suitable for being promoted in various safety check application scenarios.
Personnel to be tested can complete the scanning imagery at the human body front back side, avoid and turn round link, protect without turning round link
The fluency for having demonstrate,proved safety check greatly improves current rate.
Further, further include step (f): the personnel to be measured for passing through safety check leave from safety check outlet；It needs artificial
The personnel to be measured of reinspection leave from reinspection outlet, are then manually rechecked.
Further, in the step (c), by signal acquisition process module, by linear array scanning list signal obtained
The concrete mode handled is using time domain rear orientation projection imaging algorithm.
In conclusion the configuration of the present invention is simple, manufacturing cost is low, above and below mechanical scanning mechanism energy band moving-wire battle array scanning element
It is mobile.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the circuit diagram of the embodiment of the present invention 1；
Fig. 3 is the linear array scanning cellular construction figure of the embodiment of the present invention 1；
Wherein, safety check cabin 1, cabin 11, entrance 12, outlet 13, safety check outlet 131, reinspection outlet 132；Detection zone 1a；Machine
Tool sweep mechanism 2；Linear array scanning unit 3, Millimeter-Wave Source 31, millimeter wave detector 32, main body 33；Signal acquisition process module 4；
Control module 5；Display module 6 is imaged；Automatic identification module 7；Metal detection plate 8；Personnel 100 to be measured.
Specific embodiment
In order to make those skilled in the art better understand the present invention program, below in conjunction in the embodiment of the present invention
Attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.
Embodiment 1
A kind of millimeter wave safety check cabin system, including safety check cabin 1, mechanical scanning mechanism 2, linear array scanning unit 3, signal acquisition
Processing module 4, control module 5, imaging display module 6, automatic identification module 7.
The safety check cabin 1 is the space being completely closed, and is provided for the suspect that further control carries dangerous contraband
Various possible compulsive means.Safety check cabin 1 includes 11, entrances 12 of cabin and two outlets 13.Shape in the safety check cabin 1
At detection zone 1a, detection zone 1a is for disposing personnel 100 to be measured.If place space allows, the outlet 13 be can be set into
Two, including safety check outlet 131 and reinspection outlet 132, safety check outlet 131 pass through for the personnel to be measured of safety check qualification, recheck out
Mouth 132 passes through for the underproof personnel to be measured of safety check, then carries out manual review.And in other embodiments, the outlet 13
It can be an either two or more.
The linear array scanning unit 3 is set at entrance 12.The linear array scanning unit 3 includes multiple Millimeter-Wave Sources 31, multiple
The quantity of millimeter wave detector 32 and main body 33, the Millimeter-Wave Source 31 and millimeter wave detector 32 can be set as needed.Institute
Main body 33 is stated with front and back, towards area to be checked behind this, before be arranged with opposition below.Before the main body 33 and
It is equipped with Millimeter-Wave Source 31 and millimeter wave detector 32 below.And Millimeter-Wave Source 31 and millimeter wave detector 32 are before main body 33
Face and below on be distributed in distance into array structure.The present invention obtains reliable and stable millimeter wave by the way of multistage frequency multiplication
Source occurs and receives millimeter wave by mixing antenna coupling, completes signal detection by millimeter wave detector, ensure that active
The stability of millimeter wave detection.
Preferably, the Millimeter-Wave Source 31 and millimeter wave detector 32 are alternatively arranged into period relatively prime thinned array knot
Structure, specific arrangement mode are as follows: 31 numbers of Millimeter-Wave Source are N1, and 32 numbers of millimeter wave detector are N2, and array period length is D,
Then N1N2 is relatively prime, and the array element spacing of Millimeter-Wave Source 31 is D/N1, and the array element spacing of millimeter wave detector 32 is D/N2.
Such as in this example, linear array scanning unit 2 is using period relatively prime sparse array structure arrangement, including three arrays
Period, the Millimeter-Wave Source 31 for actively emitting millimeter wave and the 32 number ratio of millimeter wave detector for receiving millimeter-wave signal are 5:6,
It ensure that relatively prime, its degree of rarefication can be calculated according to formula α=2N1N2/ (N1+N2) and reach 5.56, i.e., use 15 in total
A Millimeter-Wave Source 31 and 18 millimeter wave detector 32 adds up to 33 actual components, discrete periodic arrangement spaced apart, group
At Sparse Array structure, 180 detecting elements are equivalent to, under the premise of guaranteeing image quality, substantially reduce device cost.
The mechanical scanning mechanism 2 is set at entrance 12.Mechanical scanning mechanism 2 connects linear array scanning element 3 and can drive
Linear array scanning unit 3 is moved up and down along entrance 12；Certain mechanical scanning mechanism 2 can also drive 3 edge of linear array scanning unit
Entrance moves left and right.Mechanical scanning mechanism 2 can be mounted on to 12 top of entrance, such as design rolled curtain, pass through motor band
Dynamic roller shutter winding realizes the translation scanning of up and down direction；Sweep mechanism 2 can also be mounted on to 12 left side of entrance, realize right and left
To translation scanning.Sweep mechanism can certainly be arranged to cylinder, push linear array scanning unit 3 mobile by cylinder.
The signal obtained of linear array scanning unit 3 is handled, using time domain rear orientation projection (Back Projection,
Initial data is directly projected to and is ultimately imaged in plane by BP) imaging algorithm, and without positions calculations, gained image is true three
The scattering strength of dimension space position is convenient for subsequent synthetic operation, while avoiding use is approximately that uniform linear array carries out
The error of calculating does not require array structure, is suitble to apply in the relatively prime periodic array of big degree of rarefication.
Mechanical scanning mechanism 2 drives linear array scanning unit 3 to carry out translation scanning, and the Millimeter-Wave Source 31 of Sparse Array structure is sent out
Millimeter wave out scans human body to be checked, realizes the millimeter wave scanning imaging to Whole Body.In this example, in this example
In, when detecting to human body, each 3 pairs of a part of regions of moment linear array scanning element carry out detection and handle with imaging algorithm,
By the principle of synthetic aperture radar holographic imaging to received mm-wave imaging, at optical focus needed for avoiding optical imagery
Reason.
The signal acquisition process module 4 connects millimeter wave detector 32, and signal acquisition process module 4 can be acquired and be handled
32 signal of millimeter wave detector.Control module 5 connects mechanical scanning mechanism 2.The control module 5 selects existing controller.
Control module 5 can facilitate the co-ordination for controlling above-mentioned multiple modules.
The 6 connection signal acquisition processing module 4 of imaging display module, and signal carries out image reconstruction conjunction to treated
It is differently shown at 3-D image, and for different objects, to adapt to different operating demand.The imaging display module 6 connection
Control module 5.In this example, signal detection is completed by millimeter wave detector 32, the signal acquisition process module 4 is to this
Signal is handled, and the segmentation partial image signal for subsequent algorithm processing is then converted into.The imaging display module 6 will
Different moments topography formed by above-mentioned signal acquisition process module 4, which carries out synthesis, can be obtained complete target image.
In this example, imaging display module 6 shows the panoramic picture of synthesis.Preferably, two-way can be used
Display output, wherein being exported all the way to security staff's console, including whole image-forming informations, so that security staff can be complete
Personnel to be tested's image-forming information is checked in orientation, does multi-angular analysis processing.In addition it exports all the way to external display device, for public ring
Border viewing display.This road signal is in view of protection privacy problem, using cartoon character simulative display, only to correlation inspection
It surveys object and does region prompt processing.
The connection of the automatic identification module 7 imaging display module 6,7 pairs of acquisition image datas of automatic identification module carry out people
Work intelligence operation, it is automatic to carry out prohibited items judgement prompt, prevent the careless omission of artificial detection.In addition, set in the detection zone 1a
There is metal detection plate 8, which stands for personnel 100 to be measured, which connects automatic identification module
7。
In this example, the automatic identification module 7 is used to carry out artificial intelligence calculating to the panoramic picture of synthesis, in turn
It is compared with contraband image data base, automatic identification and prompt is carried out to its degree of danger, prevent the careless omission of artificial detection,
It is perfectly safe to accomplish.If individual articles automatic identification is had any problem, security staff can be prompted manually to be rechecked.
In this example, the testing result of metal detection plate also can directly be connected with Mag & Bag Service device, automatic prompt sole
Metal detection situation.
THz wave can be equally applicable to after output wave frequency by changing Millimeter-Wave Source 31, and field of safety check is imaged.
Embodiment 2
The present embodiment is the safety inspection method of embodiment 1, and a kind of safety inspection method in millimeter wave safety check cabin includes the following steps:
(a) preparation stage: activation system guides personnel to be tested to standing before the entrance 12 in safety check cabin 1, in face of machinery
It is motionless that sweep mechanism 2 is kept fixed posture；
In the step (a), personnel to be tested need to put hands up, by whole body especially oxter exposure, to guarantee detection zone
Completely.
(b) front scan: mechanical scanning mechanism 2 is controlled by control module 5 and drives about 3 linear array scanning unit or left and right
Mobile to carry out translation scanning, the millimeter wave that Millimeter-Wave Source 31 issues scans personnel 100 to be measured, the reflection of personnel 100 or scattered to be measured
The millimeter-wave signal penetrated is received by millimeter wave detector 32, and signal acquisition process module 4 receives millimeter wave detector 32
Millimeter-wave signal be acquired processing.
(c) back scan: after the completion of above-mentioned steps (b), personnel 100 to be measured enter safety check cabin 1 from entrance 12, stand on
In detection zone 1a, specific station is on metal detection plate 8；It is motionless that posture is kept fixed back to mechanical scanning mechanism 2；Repeat step
(b), the millimeter wave scanning imaging to 100 back side of personnel to be measured is completed.
In the step (c), through signal acquisition process module 4, at the signal obtained of linear array scanning unit 3
The concrete mode of reason is using time domain rear orientation projection imaging algorithm.
In the step (b) (c), personnel to be tested can complete being scanned into for the human body front back side without turning round link
Picture avoids and turns round link, ensure that the fluency of safety check, greatly improves current rate.
In the step (b) (c), the coordinate of real-time automatic recording linear array scanning unit, for different moments institute's detection zone
Image synthesis establish mapping equation.
(d) image synthesizes: after completing above-mentioned steps (c), after imaging display module 6 is to the processing of signal acquisition process module 4
All signals synthesized, be spliced into the panoramic picture of personnel's tow sides to be measured, so by imaging display module 6 synthesize to
Human body three-dimensional image is examined, is differently shown for different objects.
In the step, imaging display module 6 passes through synthetic aperture radar (Synthetic Aperture Radar, SAR)
The principle of imaging is focused imaging.In view of the requirement of real time imagery, by signal acquisition process module 4, by mechanical scanning
The signal obtained of mechanism 2 is handled, and using time domain rear orientation projection (Backprojection, BP) imaging algorithm, directly will
Initial data, which projects to, to be ultimately imaged in plane, and without positions calculations, gained image is that the scattering of true three-dimension spatial position is strong
Degree is convenient for subsequent synthetic operation, while avoiding use is approximately the error that uniform linear array is calculated, to array junctions
Structure does not require, and is suitble to apply in the relatively prime periodic array of degree of rarefication big in the present embodiment.Preferably, piecemeal BP can be used
Imaging algorithm, real time imagery can be accomplished by reducing algorithm calculation amount in conjunction with GPU parallel computing.
In step (d) image synthesizing procedure, in order to ensure personnel to be tested's individual privacy, portion will be done to the image of display
Divide cartooning's processing.
(e) automatic identification: intelligent algorithm processing is carried out according to image is obtained, the standard image data library with contraband
It compares, the information and safety instruction of identification is provided by automatic identification module 7.
In the step (e), by deep learning algorithm preset in automatic identification module 7 for special in panoramic picture
Object carries out intelligent decision and safety instruction.In this example, it is calculated using based on YOLO (You Only Look Onec)
The frame of method.Feature is extracted using convolutional network, obtains predicted value using full articulamentum.Network structure includes 24 convolutional layers
With 2 full articulamentums.Pre-training is carried out first, it will be by the millimeter wave hologram image of the various standard hazardous product of image preprocessing
The full articulamentum in preceding+1, layer, the pond average of 20 convolutional layers+1 of training YOLO network on ImageNet.In pre-training
4 convolutional layers and 2 full articulamentums of random initializtion are added on 20 layers of obtained convolutional layer.When detection, by people
Body millimeter-wave image is divided into 10*10 grid, and each grid predicts 2 bounding box and its confidence level and 20 classes
Other probability.Bbox information (x, y, w, h) is offset and wide high, normalized of the center relative to grid position of object,
Each cell predicts final output definition of probability when test are as follows:
Pr (Classi | Object) * Pr (Object) * IOUtruthpred=Pr (Classi) * IOUtruthpred (1)
Trained YOLO network is directly placed in automatic identification module 7, when carrying out human body safety check, the reality that will obtain
When panoramic picture pass through a forward process of network first and exported；Then by judging each maximum kind for predicting box
Whether other confidence level is more than specified threshold value, and the box is given up if it's not true, and the classification confidence level of each box is with pre-
The class probability of survey is multiplied to obtain with confidence level, and classification confidence level gives the category and appears in probability and prediction in box
Box accuracy；Remaining box is filtered using non-maximal supression, final box is exactly YOLO most final inspection
It is surveying as a result, the corresponding classification of its maximum classification confidence level is exactly classification belonging to object.System finally provides safety according to probability
Prompt.
Preferably add step (f) again: the personnel to be measured 100 for passing through safety check leave from safety check outlet 131；It needs artificial
The personnel to be measured 100 of reinspection leave from reinspection outlet 132, are then manually rechecked.It, can be from special i.e. when prompt has a question
Door outlet is left, and is then rechecked respectively by men and women inspector, to further decrease error, improves the accuracy of safety check；And
It can be left by addition exporting normal through the personnel of safety check, guarantee safety check fluency, improve current rate.
This method can be equally applicable to THz wave imaging peace after the output wave frequency by change Millimeter-Wave Source 31
Inspection field.
Obviously, 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 should fall within the scope of the present invention.
Claims (10)
1. a kind of millimeter wave safety check cabin system, it is characterised in that: including
Safety check cabin (1), including cabin (11), an entrance (12) and at least one outlet (13)；Placement is formed in safety check cabin (1)
The detection zone (1a) of personnel (100) to be measured；
Linear array scanning unit (3) at entrance (12)；The linear array scanning unit (3) includes multiple Millimeter-Wave Sources (31), more
A millimeter wave detector (32) and main body (33)；The main body (33) have towards behind area to be checked and with oppose below before
Face, the Millimeter-Wave Source (31) and millimeter wave detector (32) are alternatively arranged into array structure and are installed on before main body (33)
Below；
Mechanical scanning mechanism (2) at entrance (12), mechanical scanning mechanism (2) connection linear array scanning element (3) can simultaneously drive
Moving-wire battle array scanning element (3) up and down or is moved left and right along entrance (12)；
Signal acquisition process module (4) connects millimeter wave detector (32), can acquire and handle millimeter wave detector (32) letter
Number；
Connect the control module (5) of mechanical scanning mechanism (2)；
It is imaged display module (6), connection signal acquisition processing module (4), and signal carries out image reconstruction synthesis to treated
3-D image, and be differently shown for different objects, imaging display module (6) link control module (5)；
Automatic identification module (7), connection imaging display module (6), and artificial intelligence operation is carried out to image data is obtained, automatically
Carry out prohibited items judgement prompt.
2. millimeter wave safety check cabin system according to claim 1, it is characterised in that: be equipped with and be used in the detection zone (1a)
The metal detection plate (8) that personnel (100) to be measured are stood, the metal detection plate (8) connect automatic identification module (7).
3. millimeter wave safety check cabin system according to claim 1, it is characterised in that: the mechanical scanning mechanism (2) is set to
The top or side of entrance (12).
4. millimeter wave safety check cabin system according to claim 1, it is characterised in that: the outlet (13) includes closing for safety check
The safety check outlet (131) that the personnel to be measured of lattice pass through and the reinspection outlet (132) passed through for the underproof personnel to be measured of safety check.
5. millimeter wave safety check cabin system according to claim 1, it is characterised in that: the Millimeter-Wave Source (31) and millimeter wave
Detector (32) is alternatively arranged into period relatively prime sparse array structure, specific arrangement mode are as follows: and Millimeter-Wave Source (31) number is N1,
Millimeter wave detector (32) number is N2, and array period length is D, then N1N2 is relatively prime, and the array element spacing of Millimeter-Wave Source (31) is
D/N1, the array element spacing of millimeter wave detector (32) are D/N2.
6. millimeter wave safety check cabin system according to claim 1, it is characterised in that: the frequency range of the millimeter wave are as follows:
26.5GHz-1000GHz。
7. a kind of safety inspection method in millimeter wave safety check cabin, includes the following steps:
(a) preparation stage: activation system guides personnel to be tested to standing before the entrance of safety check cabin (1) (12), in face of machinery
It is motionless that sweep mechanism (2) is kept fixed posture；
(b) front scan: drive linear array scanning unit (3) up and down or left by control module (5) control mechanical scanning mechanism (2)
It moves right and carries out translation scanning, the millimeter wave that Millimeter-Wave Source (31) issues scans personnel (100) to be measured, personnel (100) to be measured
The millimeter-wave signal of reflection or scattering is received by millimeter wave detector (32), and signal acquisition process module (4) visits millimeter wave
It surveys the received millimeter-wave signal of device (32) institute and is acquired processing；
(c) back scan: after the completion of above-mentioned steps (b), personnel (100) to be measured enter safety check cabin (1) from entrance (12), stand
In detection zone (1a), it is motionless that posture is kept fixed in face of mechanical scanning mechanism (2)；It repeats step (b), completes to people to be measured
The millimeter wave scanning imaging at member (100) back side；
(d) image synthesizes: after completing above-mentioned steps (c), after imaging display module (6) is to signal acquisition process module (4) processing
All signals synthesized, be spliced into the panoramic picture of personnel's tow sides to be measured, and then synthesized by imaging display module (6)
Human body three-dimensional image to be checked, is differently shown for different objects；
(e) automatic identification: intelligent algorithm processing is carried out according to image is obtained, is carried out with the standard image data library of contraband
Comparison, the information and safety instruction of identification are provided by automatic identification module (7).
8. the safety inspection method in millimeter wave safety check according to claim 7 cabin, it is characterised in that: further include step (f): smoothly
It is left by the personnel to be measured (100) of safety check from safety check outlet (131)；The personnel to be measured (100) for needing manually to recheck are from reinspection
Outlet (132) is left, and is then manually rechecked.
9. the safety inspection method in millimeter wave safety check according to claim 7 cabin, it is characterised in that: in the step (c), pass through
The concrete mode that linear array scanning unit (3) signal obtained is handled is using time domain by signal acquisition process module (4)
Rear orientation projection's imaging algorithm.
10. the safety inspection method in millimeter wave safety check according to claim 7 cabin, it is characterised in that: in the step (e), adopt
Intelligent algorithm training and detection identifying processing are carried out to panoramic picture with YOLO algorithm frame.
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