CN103698762B - A kind of virtual axis type millimeter wave human body security check system - Google Patents
A kind of virtual axis type millimeter wave human body security check system Download PDFInfo
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- CN103698762B CN103698762B CN201310745798.8A CN201310745798A CN103698762B CN 103698762 B CN103698762 B CN 103698762B CN 201310745798 A CN201310745798 A CN 201310745798A CN 103698762 B CN103698762 B CN 103698762B
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- millimeter wave
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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
- 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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- Radar, Positioning & Navigation (AREA)
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- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention relates to a kind of virtual axis type millimeter wave human body security check system, this system includes imaginary axis rail unit, including the first circular arc type guide rail；Scanning element, including first group of millimeter wave antenna array and the first millimeter wave transceiver；Scan drive cell, for driving described first group of millimeter wave antenna array to carry out the scanning of reciprocal virtual axis type circular arc type track along described first circular arc type guide rail；Data processing unit, for processing the detection signal from scanning element, to form human body image to be measured；Display unit, for showing described at least one human body image to be measured.Human body security check system of the present invention utilizes the mode that virtual axis type scans, it is not necessary to reduce moving loads, reduces rotary inertia, thus improves scanning speed.This system takes up room little, can set up single, double module safe examination system more flexibly with real space size and tested amount.
Description
Technical field
The present invention and a kind of human body security check system, particularly a kind of virtual axis type millimeter wave human body safety check
System.
Background technology
The change of International Terrorism form proposes many-sided new demand, first, energy to human body safety check
Enough article realized under covering human body medicated clothing realize non-formula 3D hologram image checking of undressing
Safe examination system is increasingly subject to pay attention to；The second, need to extend power of test, it is possible to metal and non-
Metal realizes detection, including gun, cutter, explosive, drugs, CD, cash, liquid
Body, chip, pottery etc.；3rd, need on the basis of ensureing above demand, reduce safety check system
The system detection means harm to health；4th, possess with low cost, strong adaptability, use
Family the product of feature such as is experienced and will be favored by market.
The prior art means that can be used for human body safety check include: metal detection, x-ray imaging,
Active and passive millimeter wave detection etc..These means there is problems in that
1, traditional human body safety check uses metal object detection door and Handheld metal detector substantially
Human body is carried out metal contraband detection, this mode cannot detect concealment carry nonmetal
Contraband, such as drugs, explosive etc..For eliminating or reduce hidden danger, generally individually use touch to be checked
Suspicious object is concealed district and is manually investigated by the mode of personnel, and Consumer's Experience is the best, safety check speed
Spend relatively low.
2, in recent years, occur in that the X-ray human body safety check instrument of low radiation dose can be real in the world
Now to metal and the detection of nonmetal target, owing to it exists radiation hazradial bundle to personnel's health, no
Well-established by public affairs, and image taking speed is slower, it is difficult to promote the use of in daily safety check.
In recent years, along with development and the reduction of device cost of millimeter-wave technology, at human body safety check
In the most progressively draw attention, millimeter wave human body security check system also engenders in the market.Millimeter
Ripple Detection Techniques have can penetrate human body medicated clothing, little to human body radiation dosage, it is achieved more high-precision
Degree imaging, it is possible to identify the plurality of advantages such as each metalloid and nonmetal contraband.Millimeter wave detection
Technology can be divided into passive detection and active detection, and passive detection technology is to utilize object certainly
Send out radiation microwave brightness temperature, by focal plane arrays (FPA) microwave radiation machine, synthesis aperture synthesis micro-
The modes such as wave radiation meter realize the imaging being observed object, and current this mode exists imaging essence
Spend the highest, the problem of systematic observation poor real, cannot be introduced into actual application at present.
Active millimeter wave human body security check system, mainly utilizes plane synthetic aperture technique, cylinder
Synthetic aperture technique.Wherein: plane synthetic aperture technique produces the energy of 3D hologram stereo-picture
Power and cylinder synthetic aperture technique project scarce capacity, become currently with cylinder synthetic aperture technique
Developing direction for active millimeter wave human body security check system.Realize based on cylinder synthetic aperture skill
The key index performance of the active millimeter wave human body security check system of art is its imaging precision and become
As the time, need the scan mode of safe examination system active to millimeter wave, scanning element work side
Formulas etc. carry out particular design, to meet the current anti-terrorism form each side need to human body security check system
Ask.
Human body safety check instrument based on active millimeter wave technology is already present in international market, state
Interior market is the most universal, the problem that this safe examination system generally there are following several respects:
1, price is higher.Complete machine all uses the U-shaped main supporting structure of double antenna, suspension type, compound
The forms such as belt transmission system, Mechatronic Systems structure is complicated, and bulky needs sub-unit to store,
Cost of transportation is high.
2, total height is generally higher than 2.7m, and width is more than 1.9m.Adaptability is the strongest, it is impossible to peace
It is contained in the spaces such as the most old airport security passage, small-sized important place, condo relative
Narrow and small occasion.
3, top is rotary drive mechanism and equipment installation region, is formed relatively on the personnel to be tested crown
Significantly material object takes up room, and expresses allowing personnel to be tested have pressure in steric configuration and spatial vision
Power sense, inner space is narrow and small simultaneously, and Consumer's Experience is the best.
4, generally individually need in-site installation near security check passage, need to use the operations such as double ladder
Instrument, takies space of planes significantly, and the structure of its complexity needed for about two each and every one working days just simultaneously
Can installation and debugging complete.Affect the normal of safety check work to carry out in order, bring potential safety hazard.
5, mobile difficulty.Break down and need closedown security check passage to carry out field maintenance, it is impossible to move
Move and carry out to Tooling Maintenance Area, easily cause under safety check flow in the less place of security check passage
Fall.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of virtual axis type millimeter wave human body safety check system
System, takes up room greatly solving existing product, and maintenance cost is high, the mobile problem such as inconvenient.
For solving above-mentioned technical problem, the present invention provides a kind of virtual axis type millimeter wave human body safety check system
System, this system includes
Imaginary axis rail unit, including the first circular arc type guide rail；
Scanning element, including first group of millimeter wave antenna array and the first millimeter wave transceiver；
Scan drive cell, is used for driving described first group of millimeter wave antenna array along described first
The scanning of reciprocal virtual axis type circular arc type track is carried out on circular arc type guide rail；
Data processing unit, for processing the detection signal from scanning element, to be measured to be formed
Human body image；
Display unit, for showing described at least one human body image to be measured.
Preferably, described imaginary axis rail unit farther includes and described first circular arc type guide rail pair
Claim the second circular arc type guide rail arranged；
Described scanning element farther includes second group of millimeter wave antenna array and the second millimeter wave is received
The machine of sending out；
Described scan drive cell drives described second group of millimeter wave antenna array described further
The scanning of reciprocal virtual axis type circular arc type track is carried out on second circular arc type guide rail.
Preferably, described first group and second group of millimeter wave antenna array and millimeter wave transceiver divide
Not do not carry out in centrosymmetry mode or to mode on described first and second circular arc type guide rails
Scanning.
Preferably, described human body security check system farther includes the main body frame with entry and exit,
For supporting described imaginary axis rail unit and limiting the scanning area of virtual axis type circular arc type track scanning.
Preferably, described main body frame farther includes extendible splicing base.
Preferably, the scanning footprint of described first group and second group millimeter wave antenna array divides
It is not 90 °-180 °.
Preferably, one group of millimeter wave antenna array includes multiple reception unit and multiple transmitter unit,
It it is interlaced arrangement at equal intervals between described reception unit and transmitter unit.
Preferably, described circular arc type guide rail includes the driving cog being positioned at its excircle, described scanning
The further power set of driver element, described power set are by meshing gear and described circular arc type
The excircle driving cog of guide rail is meshed, and described millimeter wave antenna array is fixed on described power dress
Put.
Preferably, described millimeter wave antenna array is fixed on described power set by flange,
Described mounting flange is provided with read head and segmentation box.
Preferably, this system farther includes track pedestal, on the medial surface of described track pedestal
It is provided with grating scale.
Technical scheme advantage of the present invention is:
1, use the incomplete round arc guide rail of virtual axis type as motion load bearing component, eliminate tradition
The rotary motions such as the entity main shaft that must use in real axis mode, bearing, pivotal support arm are propped up
Support parts, are greatly reduced moving loads, reduce rotary inertia so that more at a high speed
Circular scanning campaign can realize.
2, use novel needle roller (post) formula gear as drive assembly, than conventional gears driving side
Formula transmission efficiency is higher, and noise is lower, without the need for oil lubrication, reduces maintenance cost.
3, use modularized design, existing double antenna rotation sweep be reduced to single antenna scanning,
Turning round twice sweep by personnel to be tested and realize the full 3-dimensional image of human body, single module can complete people
The function of swept-volume imaging, reduces the access cost of millimeter wave human body security check system.
4, the single module feature that to have transverse direction and longitudinal direction physical dimension little, light, can be placed in narrow
The relatively low security check passage of narrow security check passage, floor height, the small apartment etc. in not common place need
Relatively improving the place of security implementations, market application foreground is much larger than common millimeter wave safe examination system.
5, Dual module combination forms complete double antenna millimeter wave human body security check system, it is adaptable to peace
Traditional occasion that inspection flow is big.The Open architecture of mechanism without rotary-top makes equipment and safety check
The environment in place merges more harmonious, and personnel to be tested will not be blocked in entrance safety check instrument retracement line,
Not being environmentally isolated the sensation of blocking-up, Consumer's Experience is more perfect, and product affinity is higher.
6, modular design makes the occupation mode of user more flexibly, and single module is usable in
The region that space is less, Dual module combination is usable in the region that flow is bigger, can be along with safety check
The change of passage and split, combine, meet the use demand of user's diversification.
7, the modular design of virtual axis type makes structure the compactest, greatly reduces height dimension
With on-site installation work amount, accumulating is more convenient, substantially achieves plug and play, at utmost
Reduce the inconvenience that work on the spot brings to user.
8, scanning element integral structure and the design without rotary-top support member make the maintenance need not be high
Idle job, unit replacement is more convenient, is effectively shortened maintenance time so that the full life of product
Life cycle costing is lower.
9, the modularized design of compact makes the transhipment extremely convenient of safe examination system, uses general
Logical hand fork lifter can complete, and can adjust with the change of user's security check passage and change at any time, need not
Secondary installing.
Accompanying drawing explanation
Fig. 1 is shown as the schematic diagram of a kind of virtual axis type millimeter wave human body security check system single module scanning；
1, millimeter wave antenna, the 2, first millimeter wave antenna array, the 3, first millimeter wave transceiver,
4, flange, the 5, first power set, the 6, first circular arc type track, 7, position sensor,
8, track pedestal, 9, circular arc framework, 10, power supply, 11, motor driver, 12,
Control device, 13, extendible splicing base, 14, wall, 15, personnel to be measured；
Fig. 2 is shown as the top view of a kind of virtual axis type millimeter wave human body security check system single module scanning；
Fig. 3 is shown as the top view of a kind of virtual axis type millimeter wave human body security check system Dual module scanning；
16, the second millimeter wave antenna array, 17 second circular arc type guide rails, the 18, second millimeter wave
Transceiver, the 19, second power set；
Fig. 4 is shown as the left view of a kind of virtual axis type millimeter wave human body security check system Dual module scanning
Fig. 5 is shown as the schematic diagram of a kind of virtual axis type millimeter wave human body security check system Dual module scanning.
Detailed description of the invention
Below according to accompanying drawing, the present invention is described further:
The present invention provides a kind of virtual axis type millimeter wave human body security check system, and this system includes virtual axis type
Track element, scanning element, scan drive cell, processing unit and display unit.The present invention
Described safe examination system can use single module or Dual module to be scanned according to actual needs.
When single module is scanned, described imaginary axis rail unit includes the first circular arc type guide rail 6,
The excircle of this first circular arc type guide rail 6 has driving cog；Described scanning element includes first group of milli
Metric wave aerial array 2 and the first millimeter wave transceiver 3；Described scan drive cell includes first
Power set 5, these power set 5 are by meshing gear and the cylindrical of the first circular arc type guide rail 6
Week driving cog engagement, described first millimeter wave antenna array 2 is by with read head and segmentation box
Flange 4 be fixed on described first power set 5, these power set are used for driving described
One group of millimeter wave antenna array 2 carries out reciprocal virtual axis type along described first circular arc type guide rail 6
The scanning of circular arc type track, scanning footprint is 90 °-180 °；This system also includes with number
Control device 12 according to processing unit and display unit.
When Dual module is scanned, imaginary axis rail unit described in this system includes symmetrically arranged
One circular arc type guide rail 6 and the second circular arc type guide rail 17；Described scanning element includes first group of milli
2, second group of millimeter wave antenna array the 16, second millimeter wave transceiver 3 and of Metric wave aerial array
Second millimeter of transceiver 18, described first millimeter wave antenna array 2 and the second millimeter wave antenna
Array 16 is respectively at described first circular arc type guide rail 6 and the second circular arc type guide rail 17 Shang Yi center
Symmetric mode or be scanned to mode；Scan drive cell includes two groups of power set, the
One power set 5 are used for driving described first millimeter wave antenna array 2 along described first circular arc type
Carrying out the scanning of reciprocal virtual axis type circular arc type track on guide rail 6, the second power set 19 are used
Carry out along described second circular arc type guide rail 17 in driving described second millimeter wave antenna array 16
The scanning of reciprocal virtual axis type circular arc type track, scanning footprint is respectively 90 °-180 °；Should
System also includes the control device 12 with data processing unit and display unit.
Human body security check system of the present invention farther includes the main body frame with entry and exit,
For supporting described imaginary axis rail unit and limiting the scanning area of virtual axis type circular arc type track scanning,
Change main body frame and also include extendible splicing base 13, be used for realizing single module or Dual module
And the overlap joint of line related and establishment.This theme framework is provided with the rail of fixing circular arc type guide rail
Road pedestal 8, the medial surface of track pedestal 8 posts grating scale.
Millimeter wave transceiver of the present invention uses miniaturized compact design, is arranged on described milli
The Metric wave aerial array back side.Described millimeter wave transceiver includes: high stability crystal oscillator,
There is the frequency synthesizer of few tens of nano-seconds level agile frequency rate, converter unit, directional coupler,
Frequency mixer, quadrature demodulator, AD collecting unit and timing control unit.High stability crystal
Agitator output reference time signal is supplied to frequency synthesizer as emission detection baseband signal
With with reference to baseband signal, two paths of signals becomes the emission detection letter of millimeter wave band after frequency conversion
Number and reference signal, wherein a road of millimeter wave emission detection signal send to millimeter wave switch milli
Metric wave aerial array emitter passage is used for detecting target, another road and the one of millimeter wave reference signal
Road mixing is used for making to receive with reference to baseband signal；Another road of millimeter wave reference signal with from milli
The reception channel signal of metric wave switch millimeter wave antenna array is mixed mutually and is used as to receive baseband signal.
Receive and demodulated by quadrature demodulator with receiving baseband signal with reference to baseband signal, and pass through AD
Collecting unit gathers, it is thus achieved that to width under each Frequency point of the step frequency probing wave of personnel to be tested
Degree and phase information.All above parts are by the timing control unit control within millimeter wave transceiver
System.The present invention use there is low sidelobe, high-gain, directivity cover detected region characteristic
Millimeter wave antenna array, the antenna in millimeter wave antenna array uses electromagnetic horn or dielectric rod sky
Line.Millimeter wave antenna unit in scanning element is staggered according to transmitting-receiving order, in vertically side
To by millimeter wave transceiver control, realize the milli to personnel to be tested's vertical direction by switch arrays
Metric wave wave beam electricity switched scan, meanwhile, the circular motion of scanning element, in rotation sweep district
Realize the rotating machinery formula scanning of the horizontal direction to personnel to be tested.
Power set of the present invention include motor, reductor, shaft coupling and drive gear etc.,
Motor receives movement instruction rear drive reductor, and then drives the driving of such as roller-type gear
Gear rolls on circular arc type external gear, thus realizes driving millimeter wave antenna array at circular arc type
Move in a circle on guide rail.
Human body security check system of the present invention also includes power supply 10, motor driver 11, position
Put feedback component, electric limiting assembly, cable, external interface and protective cover assembly etc..Cable
It is connected by motion drag chain with millimeter wave antenna array and follows millimeter wave antenna array and together transport
Dynamic.Power supply 10 passes through multiple-channel output driving motor in power set and motor drives
Device and scanning element and position feedback component are powered respectively.Cable provides electric power transmission and signal
The function of transmission.Position feedback component includes the grating scale being pasted onto circular arc type frame base side
Form, by read head with the read head being arranged on moving component mounting flange and segmentation box etc.
The optical signal collected is converted to digital signal, and by being transferred to transceiver after segmentation box segmentation
To control the millimeter wave work schedule of antenna.Electric limiting uses magnetizing mediums sensor, it is provided that zero
Position is triggered and the function of guarded by location.It is additionally provided with scanning on the theme framework of system of the present invention
Protection assembly, this scan protection assembly includes the transparent protective component of the first half and the non-of lower half
Bright guard member, the transparent protective component of top half increases light transmission, it is provided that good Consumer's Experience,
The latter half guard member blocks internal structure.Internal motion mechanism isolated by protection assembly, externally may be used
Avoiding personnel to be tested by the accidental injury of motion, internally protection motion is normally transported
OK.
When the present invention uses Dual module to scan, it is desirable to have corresponding mechanical interface and electric interfaces come
Coordinating and build Dual module, therefore, safe examination system of the present invention also includes being configured on system base
External interface, this external interface is divided into mechanical interface and electric interfaces, and mechanical interface is mainly used
Docking location when combining in Dual module and fix, electric interfaces includes Dual module docking combination
The signal transmission of power supply and main control computer.
A kind of virtual axis type millimeter wave human body security check system of the present invention is under single module mode of operation
During work, personnel to be tested 15 forward walking enter region to be checked, partly turn round (90 °) towards
Center of arc, is now scanned by operator's operation control software, first control device
12 provide motion control signal to be sent out by movement instruction to motor driver 11, motor driver 11
Give the first power set 5 thus drive scanning element along being arranged on first on circular arc pedestal 8
Circular arc type guide rail 6 moves.Forward zero position switch is triggered, by first after scanning element setting in motion
Millimeter wave transceiver 3 controls millimeter wave the first millimeter wave antenna array 2 and starts data acquisition.The
One millimeter wave antenna array 2 is switched by the column scan on position sensor 7 circular motion direction
Position, realizes the first millimeter wave antenna by the timing control unit of the first millimeter wave transceiver 3
The array 2 scanning switching on vertical sweep direction.Scanning element accelerated motion is to center of arc
After reduce speed now, after scanning element displacement reaches designated value stop data acquisition, scanning element
Stop motion immediately, the data collected are sent to controlling device by the first millimeter wave transceiver 3
12 carry out data process, have been considered as the forward scan of personnel to be tested 16.Personnel to be tested is complete
Turning round (180 °) and proceed by reverse scan, operator's operation control software is carried out reversely
Scanning, controlling device 12 provides motion control signal to motor driver 11, motor driver
Movement instruction is sent to the first power set 5 thus drives scanning element along being arranged on circle by 11
The first arc guide rail 6 on arc pedestal 8 moves.Reverse zero is triggered after scanning element setting in motion
Bit switch, the first millimeter wave transceiver 3 data controlling the first millimeter wave antenna array 2
Gather.First millimeter wave antenna array 2 is by the row on position sensor 7 circular motion direction
Scanning switching position, realizes the first milli by the timing control unit of the first millimeter wave transceiver 3
The Metric wave aerial array 2 scanning switching on vertical sweep direction.Scanning element accelerated motion is extremely
Reduce speed now after center of arc, after scanning element displacement reaches designated value, stop data acquisition,
Scanning element stop motion immediately, the data collected are sent extremely by the first millimeter wave transceiver 3
Control device 12 and carry out data process, be considered as the reverse scan of personnel to be tested 15.
Fig. 2 is that single module scans top view, it can be seen that scanning work district geometric properties: to be checked
Personnel's forward is in the face of scanning center's line, and the geometric center of personnel to be tested is basic and module geometric center
Overlapping, sweep limits is generally higher than 90 °.The center of the left and right directions that module is shown in the figure
At line, design separates end face, in order to Dual module splices and combines.When single module uses, use
At the bottom of extendible splicing 13 carry out lateral dimension supplement, simultaneously provide wall 14 installation
End flanges.Module inlet width is generally higher than 560mm, can accommodate man's forward and step into,
Laterally need not step into after leaning to one side.
Fig. 5 is the human body security check system structural representation of Dual module, and in Fig. 5, right side is first to sweep
Retouching module, left side is the second scan module, and the first scan module and the second scan module pass through position
Mechanical interface on base 13 is fixed, connect the first scan module and the second scan module it
Between electric interfaces after can achieve a butt joint combination.Second scan module and the first scan module are altogether
Controlling device 12 with one, the human body security check system after combination can realize double scanning element single
Scanning imagery.When using Dual module combination type mode of operation, extendible splicing base is utilized to incite somebody to action
Two described scan modules are stitched together, and formation has double millimeter wave antenna array and sweeps simultaneously
The human body security check system retouched.Owing to the human body security check system of Dual module of the present invention is by two
The scanning system that individual single module scanning system is formed after connecting, therefore except the control in single module
Outside device, each parts of the first scan module and the second scan module use model, quantity,
Mounting structure is the most identical.First millimeter wave antenna array 2 of Dual module scanning human body security check system
Frequency division and the work of space division complex method is used with the second millimeter wave antenna array 16.First millimeter
Ripple transceiver 3 and the second millimeter wave receiver 18 use the look-in frequency of different frequency point to realize
Detection to target, and utilize be spatially separating technology, make the first millimeter wave antenna array 2 He
Second millimeter wave antenna array 16 is launched and receives from difference the biggest target area letter
Number, to avoid two millimeter wave transceivers and two millimeter wave antenna arrays to bring in time working
Interference.During work, personnel to be tested 15 forward walking enters region to be checked, partly turns round (90 °)
Towards the first scan module or the center of arc of the second scan module, now operated by operator
Controlling software to be scanned, controlling device 12 provides motion control signal to the first scanning respectively
Module and the motor driver of the second scan module, motion is referred to by the motor driver of two modules
Order is sent respectively to respective power set thus drives respective scanning element along being arranged on circle
Circular arc type guide rail motion on arc pedestal.Touch after the scanning element setting in motion of two scan modules
Sending out forward zero position switch, its respective millimeter wave transceiver controls millimeter wave antenna array and starts number
According to collection.Millimeter wave antenna array is cut by the column scan on position sensor circular motion direction
Change place, realizes millimeter wave antenna array perpendicular by the timing control unit of millimeter wave transceiver
Scanning switching on straight scanning direction.Scanning element accelerated motion starts to subtract to center of arc
Speed, stops data acquisition after scanning element displacement reaches designated value, and scanning element stops immediately
Motion, the millimeter wave transceiver on the first scan module and the second scan module just gathers simultaneously
To data send to control device 12 carry out data process, be considered as personnel to be tested's 15
Scanning.Dual module after combination only need single pass can complete personnel to be tested 15 front and
The imaging at the back side, by controlling the imaging software synthesized human 3D hologram image on device 12.
In sum, human body security check system advantage of the present invention is:
1, use the incomplete round arc guide rail of virtual axis type as motion load bearing component, eliminate tradition
The rotary motions such as the entity main shaft that must use in real axis mode, bearing, pivotal support arm are propped up
Support parts, are greatly reduced moving loads, reduce rotary inertia so that more at a high speed
Circular scanning campaign can realize.
2, use novel needle roller (post) formula gear as drive assembly, than conventional gears driving side
Formula transmission efficiency is higher, and noise is lower, without the need for oil lubrication, reduces maintenance cost.
3, use modularized design, existing double antenna rotation sweep be reduced to single antenna scanning,
Turning round twice sweep by personnel to be tested and realize the full 3-dimensional image of human body, single module can complete people
The function of swept-volume imaging, reduces the access cost of millimeter wave human body security check system.
4, the single module feature that to have transverse direction and longitudinal direction physical dimension little, light, can be placed in narrow
The relatively low security check passage of narrow security check passage, floor height, the small apartment etc. in not common place need
Relatively improving the place of security implementations, market application foreground is much larger than common millimeter wave safe examination system.
5, Dual module combination forms complete double antenna millimeter wave human body security check system, it is adaptable to peace
Traditional occasion that inspection flow is big.The Open architecture of mechanism without rotary-top makes equipment and safety check
The environment in place merges more harmonious, and personnel to be tested will not be blocked in entrance safety check instrument retracement line,
Not being environmentally isolated the sensation of blocking-up, Consumer's Experience is more perfect, and product affinity is higher.
6, modular design makes the occupation mode of user more flexibly, and single module is usable in
The region that space is less, Dual module combination is usable in the region that flow is bigger, can be along with safety check
The change of passage and split, combine, meet the use demand of user's diversification.
7, the modular design of virtual axis type makes structure the compactest, greatly reduces height dimension
With on-site installation work amount, accumulating is more convenient, substantially achieves plug and play, at utmost
Reduce the inconvenience that work on the spot brings to user.
8, scanning element integral structure and the design without rotary-top support member make the maintenance need not be high
Idle job, unit replacement is more convenient, is effectively shortened maintenance time so that the full life of product
Life cycle costing is lower.
9, the modularized design of compact makes the transhipment extremely convenient of safe examination system, uses general
Logical hand fork lifter can complete, and can adjust with the change of user's security check passage and change at any time, need not
Secondary installing.
It is to be understood that the present invention is described by some embodiments, art technology
Personnel without departing from the spirit and scope of the present invention, can be to these features and enforcement
Example carries out various change or equivalence is replaced.It addition, under the teachings of the present invention, can be to these
Feature and embodiment modify to adapt to particular situation and material without departing from the present invention
Spirit and scope.Therefore, the present invention is not limited to the particular embodiment disclosed,
Embodiment in the range of fallen with claims hereof broadly falls into the protection model of the present invention
Enclose.
Claims (9)
1. a virtual axis type millimeter wave human body security check system, it is characterised in that: this system includes
Imaginary axis rail unit, including the first circular arc type guide rail；Described first circular arc type guide rail includes
It is positioned at the roller travelling gear of its excircle；
Scanning element, including first group of millimeter wave antenna array and the first millimeter wave transceiver；
Scan drive cell, is used for driving described first group of millimeter wave antenna array along described first
The scanning of reciprocal virtual axis type circular arc type track is carried out on circular arc type guide rail；
Described scan drive cell farther includes the first power set, described first power set
Roller toothed drive gear by meshing gear Yu the excircle of described first circular arc type guide rail
Being meshed, described first millimeter wave antenna array is fixed on described first power set by flange
On, described flange is provided with read head and segmentation box；
Data processing unit, for processing the detection signal from scanning element, to be measured to be formed
Human body image；
Display unit, is used for showing described human body image to be measured.
A kind of virtual axis type millimeter wave human body security check system the most according to claim 1, it is special
Levy and be:
Described imaginary axis rail unit farther includes symmetrically arranged with described first circular arc type guide rail
Second circular arc type guide rail；
Described scanning element farther includes second group of millimeter wave antenna array and the second millimeter wave is received
The machine of sending out；
Described scan drive cell drives described second group of millimeter wave antenna array described further
The scanning of reciprocal virtual axis type circular arc type track is carried out on second circular arc type guide rail；Described first group
Round described first and second respectively with second group of millimeter wave antenna array and millimeter wave transceiver
In centrosymmetry mode or it is scanned to mode on camber guide rail；
Described first millimeter wave antenna array and the second millimeter wave antenna array use frequency division and space division
Complex method works；
First millimeter wave transceiver and the second millimeter wave transceiver use the detection frequency of different frequency point
Rate realizes the detection to target, and utilization is spatially separating technology, makes the first millimeter wave antenna battle array
Arrange and the second millimeter wave antenna array emitter is believed with the target area received from difference is the biggest
Number.
A kind of virtual axis type millimeter wave human body security check system the most according to claim 1 and 2,
It is characterized in that: described human body security check system farther includes the main body frame with entry and exit,
For supporting described imaginary axis rail unit and limiting the scanning area of virtual axis type circular arc type track scanning.
A kind of virtual axis type millimeter wave human body security check system the most according to claim 3, it is special
Levy and be: described main body frame farther includes extendible splicing base and the installation of wall
End flanges.
A kind of virtual axis type millimeter wave human body security check system the most according to claim 1 and 2,
It is characterized in that: the scanning footprint of described first group and second group millimeter wave antenna array divides
It is not 90 °-180 °.
6. pacify according to a kind of virtual axis type millimeter wave human body described in claim 1 or 2 any one
Check system, it is characterised in that: one group of millimeter wave antenna array includes multiple reception unit and multiple
Transmitter unit, is interlaced arrangement at equal intervals between described reception unit and transmitter unit.
A kind of virtual axis type millimeter wave human body security check system the most according to claim 2, it is special
Levy and be: described second circular arc type guide rail includes being positioned at the driving cog of its excircle；
Described scan drive cell farther includes the second power set, described second power set
It is meshed by the excircle driving cog of meshing gear with described circular arc type guide rail, described second milli
Metric wave aerial array is fixed on described power set.
A kind of virtual axis type millimeter wave human body security check system the most according to claim 7, it is special
Levy and be: described second millimeter wave antenna array is fixed on described second power set by flange
On, described flange is provided with read head and segmentation box.
9. according to a kind of virtual axis type millimeter wave human body security check system described in claim 1 or 7,
It is characterized in that: this system farther includes track pedestal, on the medial surface of described track pedestal
It is provided with grating scale.
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| CN103698762B true CN103698762B (en) | 2016-11-23 |
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