CN109001836A - Terahertz human body security check system - Google Patents
Terahertz human body security check system Download PDFInfo
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- CN109001836A CN109001836A CN201811019363.4A CN201811019363A CN109001836A CN 109001836 A CN109001836 A CN 109001836A CN 201811019363 A CN201811019363 A CN 201811019363A CN 109001836 A CN109001836 A CN 109001836A
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- human body
- terahertz
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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
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Abstract
The invention discloses a kind of Terahertz human body security check systems, including Terahertz human body safety check apparatus, it further include the first self-focusing alignment device, the first self-focusing alignment device includes the first track, the first driving motor is provided on first track, the principal reflection mirror of the Terahertz human body safety check apparatus is fixed on first driving motor, when when the Terahertz human body safety check apparatus Preliminary detection to the suspect with any contraband, with the movement of suspect, the control computer controls the first driving motor movement, first driving motor drives the principal reflection mirror to move along the first track, so that the distance between the principal reflection mirror and suspect keep optimal imaging distance, so that the Terahertz human body safety check apparatus obtains stable clear human body image.The system greatly improves security staff and disposes suspicion human efficiency, can ensure public safety to the greatest extent.
Description
Technical field
The present invention relates to Terahertz Technology field more particularly to a kind of Terahertz human body security check systems.
Background technique
THz wave refers to electromagnetic wave of the frequency within the scope of 100GHz-10THz, high-end, the submillimeter wave with millimeter wave
And far infrared is overlapped, in macroelectronics to the excessive field of microcosmic photonics.THz wave is in electromagnetic spectrum
Occupy very special position.Terahertz is a kind of radiation source that is new, having many particular advantages；Terahertz Technology be one very
Important intersection Disciplinary Frontiers provide a very tempting opportunity to technological innovation, the national economic development and national security.
THz wave naturally has to nonmetallic and apolar substance penetrability, is highly suitable for detecting human body, detects human skin
And the various dangerous material hidden among clothes.THz wave has human safety simultaneously, this is because the light of THz wave
Sub- energy is very small, not will cause the injury of ionization property to human body cell, is safe to human body.Compared to the microwave and millimeter wave of low frequency
Frequency range, THz wave wavelength is shorter, hereby has high-resolution characteristic.Many substances have fingerprint spectral property in terahertz wave band,
Similar to the fingerprint of people, substance non-damage drive and detection can be applied to.In the numerous applications of Terahertz, ceased at present with human lives
Ceasing relevant is exactly Terahertz safety check technology.Terahertz human body safety check technology be using THz wave to ordinary clothing material (cotton,
Fiber crops, chemical fibre etc.) special penetrability, the blank in human body safety check field has been filled up, has been the important benefit to current human's safety check means
It fills.
Safety detection means commonly used in the prior art are metal detection door and X-ray machine, and metal detection door can not be visited effectively
Contraband in addition to metal is surveyed, typical dangerous material spy does not measure (sintex, free-flowing dynamite, liquid explosives, gasoline, diesel coal
Oil), what is elicited out is not dangerous material (mobile phone, steel Beng, key, metal toiletry), and X-ray, can since its photon energy is too big
The injury of ionization property is caused to human body cell, human body harmfulness is very big.America and Europe has disabled at present.Therefore Terahertz safety check has very big
Potential market value.
The safe examination system of THz wave is broadly divided into two major classes at present, and one kind is passive type safe examination system, and one kind is actively
Formula 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 effect
Rate is high, and speed is fast, without stop, and tested personnel normal walking in specified security check passage is mentioned significantly by that can complete safety check
High safety check efficiency；Third is that safety is radiationless, similar ordinary camera, monitoring camera do not generate electromagnetism, ionising radiation, to people
Body is harmless.The disadvantage is that resolution ratio is not high, signal-to-noise ratio is not high.Active safe examination system is the milli by actively emitting doses
Metric wave/THz wave (can receive in range of doses), human body be imaged, for passive type safety check instrument, signal-to-noise ratio is higher.
Though there is certain dose of radiation, since millimeter wave/Terahertz photon energy is small, ionization property wound will not be caused to human body cell
Evil.It is currently used main by system, mostly it is to be worked based on room temperature microelectronic component, there is fogging image mostly, acquires
Rate is not high enough, is unable to real time imagery, needs could be imaged within 3 to 5 seconds.
At present the Terahertz safe examination system of passive type with its it is radiationless be easier to be received by general public, therefore the type
Passive type safe examination system obtained significant progress.Passive type Terahertz safe examination system safety check distance more mature at present exists
0.5m to 25m distance.Can be realized the safe examination system of 25m detection range using low-temperature superconducting quantum device as core devices come
Realize that the image-forming range of the system is fixed on a distance at present to the remote probe of human body concealment article, once subject
Imaging system focal point is left, imaging system is then unable to real-time tracking, this increases difficulty to the safety check disposal personnel at scene.
Summary of the invention
The technical problem to be solved by the present invention is to how provide one kind the Terahertz human body safety check apparatus can be made to obtain
To the human body security check system of stable clearly human body image.
In order to solve the above technical problems, the technical solution used in the present invention is: a kind of Terahertz human body security check system, packet
Include Terahertz human body safety check apparatus, it is characterised in that: it further include the first self-focusing alignment device, the first self-focusing alignment dress
It sets including the first track, is provided with the first driving motor on first track, the master of the Terahertz human body safety check apparatus is anti-
It penetrates mirror to be fixed on first driving motor, the control signal of first driving motor and the Terahertz human body safety check
The control output end connection of the control computer of device, when the Terahertz human body safety check apparatus Preliminary detection to band any contraband
Suspect when, with the movement of suspect, the control computer controls the first driving motor movement, the first driving electricity
Machine drives the principal reflection mirror to move along the first track so that the holding of the distance between the principal reflection mirror and suspect most preferably at
Image distance is from so that the Terahertz human body safety check apparatus obtains stable clear human body image.
A further technical solution lies in: the safe examination system further includes the second self-focusing alignment device, and described second certainly
Focusing alignment device includes the second track, is provided with the second driving motor on second track, on second driving motor
It is provided with optical camera, the signal output end of the optical camera is connect with the signal input part of the control computer, described
Optical camera is used to carry out the suspect Image Acquisition, and the control signal of second driving motor and the control are counted
The control output end of calculation machine connects, and the control computer controls the second driving motor movement, and the second driving motor drives
The optical camera is moved along the second track so that the distance between the optical camera and suspect keep optimal imaging away from
From to suspect's progress optical image acquisition.
A further technical solution lies in: first track and the second parallel track, and first track is described in
The direction of travel of human body is arranged.
A further technical solution lies in: the Terahertz human body safety check apparatus includes rack, is provided in the rack
Pulse refrigerator, control computer and subreflector, the pulse refrigerator are controlled by the control computer, and transition edges pass
Sensor and superconducting quantum interference device are set in the pulse refrigerator, when original state the principal reflection mirror and subreflector
It is oppositely arranged, the human body terahertz signal of principal reflection mirror convergence transmits subreflector, and subreflector passes human body terahertz signal
The transition edges sensor is given, transition edges sensor sends the signal of acquisition to superconducting quantum interference device, superconduction amount
The current signal of transition edges sensor is read and is amplified by sub- interferometer, generates the voltage signal that can carry out electricity processing,
The voltage signal of generation is sent into control computer after data processing module is handled, and shows on a display screen of the control computer
The terahertz image of human body.
A further technical solution lies in: the height of second track is higher than the height of first track, so that institute
The visual angle of optical camera is stated not by the blocking of the first track, the first driving motor and principal reflection mirror.
The beneficial effects of adopting the technical scheme are that the safe examination system is in existing Terahertz human body safety check
Increase by the first self-focusing alignment device on the basis of device, when the prohibited items entrained by the remote probe to suspect, starting
Self-focusing alignment device, principal reflection mirror are moved under the traction of first motor, and the first driving motor drives the principal reflection
Mirror is moved along the first track, so that the distance between the principal reflection mirror and suspect keep optimal imaging distance, so that
The Terahertz human body safety check apparatus obtains stable clear human body image, until site disposal personnel lock suspicion personnel,
The system controls principal reflection mirror back to initial position again.
In addition, the control computer controls second autohemagglutination the system also includes the second self-focusing alignment device
The second driving motor movement in burnt alignment device, the second driving motor drive the optical camera to move along the second track, make
It obtains the distance between the optical camera and suspect and keeps optimal imaging distance, optical image acquisition is carried out to suspect, it can
Easily to compare suspect.
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 functional block diagram of safe examination system described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of Terahertz human body safety check apparatus described in the embodiment of the present invention；
Wherein: 1, Terahertz human body safety check apparatus 1-1, principal reflection mirror 1-2, control computer 1-3, pulse refrigerator 1-4, transition
Edge sensor 1-5, superconducting quantum interference device 1-6, data processing module 1-7, subreflector 2, the driving of the first track 3, first
Motor 4, the second track 5, the second driving motor 6, optical camera.
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 Terahertz human body security check system, including Terahertz human body safety check
Device 1 further includes the first self-focusing alignment device.The first self-focusing alignment device includes the first track 2, first rail
The first driving motor 3 is provided on road 2, the principal reflection mirror 1-1 of the Terahertz human body safety check apparatus 1 is fixed on described first and drives
On dynamic motor 3, the control computer of the control signal of first driving motor 3 and the Terahertz human body safety check apparatus 1
The control output end of 1-2 connects.When 1 Preliminary detection of Terahertz human body safety check apparatus to the suspect with any contraband,
With the movement of suspect, the control computer 1-2 controls first driving motor 3 and moves, and the first driving motor 3 drives
The principal reflection mirror 1-1 is moved along the first track, so that the distance between the principal reflection mirror and suspect keep optimal imaging
Distance, so that the Terahertz human body safety check apparatus 1 obtains stable clear human body image.
It should be noted that terahertz image when carrying contraband because of different human bodies is different, pass through the difference of display
Image just can recognize that carry contraband suspect, then using corresponding control method control the first driving motor drive
Principal reflection mirror follows the suspect of locking to move, and realizes that clearly human body image acquires.
As shown in Figure 1, the safe examination system further includes the second self-focusing alignment device, the second self-focusing alignment device
Including the second track 4, it is provided with the second driving motor 5 on second track 4, is provided with light on second driving motor 5
Camera 6 is learned, the signal output end of the optical camera 6 is connect with the signal input part of the control computer 1-2, the optics
Camera 6 is used to carry out Image Acquisition to the suspect.The control signal of second driving motor 5 and the control calculate
The control output end of machine 1-2 connects, and the control computer 1-2 controls second driving motor 5 and moves, the second driving motor
5 drive the optical camera 6 to move along the second track, so that the distance between the optical camera 6 and suspect keep best
Image-forming range carries out optical image acquisition to suspect.
Further, first track 2 is parallel with the second track 4, and first track 2 is along the traveling of the human body
Direction setting.The direction of travel of first track 2 and the second track 4 and human body is arranged in parallel, and has dropped the first driving electricity
The control difficulty of machine and the second driving motor.
Further, the height of second track 4 is higher than the height of first track 2, so that the optical camera 6
Visual angle not by the blocking of the first track 2, the first driving motor 3 and principal reflection mirror 1-1, prevent the optical camera cannot be just
Normal takes human body image.
Further, as shown in Fig. 2, the Terahertz human body safety check apparatus includes rack, arteries and veins is provided in the rack
Punching cooler 1-3, control computer 1-2 and subreflector 1-7.The pulse refrigerator 1-3 is controlled by the control computer
1-2, transition edges sensor 1-4(TES device) and superconducting quantum interference device 1-5(SQUID device) it is set to the pulse
In refrigerator 1-3 (TES device and SQUID device work are under liquid helium temperature).Terahertz human body safety check apparatus working frequency is
340GHz, bandwidth of operation 100GHz.The principal reflection mirror 1-1 and subreflector 1-7 is oppositely arranged when original state, principal reflection
The human body terahertz signal of mirror 1-1 convergence transmits subreflector 1-7, and subreflector 1-7 sends human body terahertz signal to institute
State transition edges sensor 1-4.Transition edges sensor 1-4 sends the signal of acquisition to superconducting quantum interference device 1-5, superconduction
The current signal of transition edges sensor 1-4 is read and is amplified by quantum interfering device, generates the voltage that can carry out electricity processing
The voltage signal of signal, generation is sent into control computer 1-2 after data processing module 1-6 processing, in control computer 1-2
Display screen display human body terahertz image.It should be noted that the Terahertz human body safety check apparatus is the prior art,
The above specific structure is one such specific structure, and those skilled in the art can select specifically used according to actual needs
That Terahertz human body safety check apparatus in the prior art, this will not be repeated here.
When attached principal reflection mirror shown in FIG. 1 is at the farest imaging range, the present invention refers to 25 meters of distances, detects and carries danger
When the suspect of dangerous product, in computer terminal after program is determined as dangerous material automatically, while starting autoregistration focusing device, mainly
It is the position that principal reflection mirror is controlled by the first driving motor of control, by the first driving motor by principal reflection mirror with certain speed
Spend toward post-tensioning, the movement speed of suspect depended on toward the speed of post-tensioning, at this time can real-time tracking suspect, calculated in control
The terahertz image of real-time display suspect on machine can be in the shortest time by suspicion in combination with optical lens real-time tracing
People arrests, and disposes dangerous situation with most fast speed.
This system allows the smallest image-forming range to be 10m, i.e., from suspect away from the total 15m's in the section safe examination system 25m to 10m
Distance is interior for disposition distance.
The long-range Terahertz human body security check system of locking certainly proposed by the invention has the following characteristics that
1) automatic alignment apparatus of the system relies primarily on the position of principal reflection mirror to realize tracking.
2) system principal reflection mirror is the farest imaging range at image focus original operating state.
3) when detecting suspicion article (suspicion personnel), automatic alignment apparatus starting, under the draw of driving motor,
Real-time tracking suspicion personnel, and can be adjusted rapidly according to the speed of suspect's speed, motor speed.
4) after having disposed suspicion personnel, system control principal reflection mirror is turned again at initial action distance.
To sum up, system of the present invention greatly improves security staff and disposes suspicion human efficiency, can be utmostly
Guarantee public safety.
Claims (5)
1. a kind of Terahertz human body security check system, including Terahertz human body safety check apparatus (1), it is characterised in that: further include first
Self-focusing alignment device, the first self-focusing alignment device include the first track (2), are provided on first track (2)
First driving motor (3), the principal reflection mirror (1-1) of the Terahertz human body safety check apparatus (1) are fixed on the first driving electricity
On machine (3), the control of the control signal of first driving motor (3) and the Terahertz human body safety check apparatus (1) is calculated
The control output end of machine (1-2) connects, when Terahertz human body safety check apparatus (1) Preliminary detection to the suspicion with any contraband
When people, with the movement of suspect, the control computer (1-2) controls the first driving motor (3) movement, the first driving
Motor (3) drives the principal reflection mirror (1-1) to move along the first track, so that the distance between the principal reflection mirror and suspect
Optimal imaging distance is kept, so that the Terahertz human body safety check apparatus (1) obtains stable clear human body image.
2. Terahertz human body security check system as described in claim 1, it is characterised in that: the safe examination system further include second from
Alignment device is focused, the second self-focusing alignment device includes the second track (4), and the is provided on second track (4)
Two driving motors (5) are provided with optical camera (6) on second driving motor (5), and the signal of the optical camera (6) is defeated
Outlet is connect with the signal input part of control computer (1-2), and the optical camera (6) is used to carry out the suspect
The control output end of Image Acquisition, the control signal of second driving motor (5) and control computer (1-2) connects
It connects, the control computer (1-2) controls the second driving motor (5) movement, and the second driving motor (5) drives the optics
Camera (6) is moved along the second track, so that the distance between the optical camera (6) and suspect keep optimal imaging distance,
Optical image acquisition is carried out to suspect.
3. Terahertz human body security check system as claimed in claim 2, it is characterised in that: first track (2) and the second rail
Road (4) in parallel, and first track (2) along the human body direction of travel be arranged.
4. Terahertz human body security check system as described in claim 1, it is characterised in that: the Terahertz human body safety check apparatus packet
Including rack is provided with pulse refrigerator (1-3), control computer (1-2) and subreflector (1-7), the arteries and veins in the rack
Punching cooler (1-3) is controlled by the control computer (1-2), transition edges sensor (1-4) and superconducting quantum interference device
(1-5) is set in the pulse refrigerator (1-3), when original state the principal reflection mirror (1-1) with subreflector (1-7) phase
To setting, the human body terahertz signal of principal reflection mirror (1-1) convergence transmits subreflector (1-7), and subreflector (1-7) is by human body
Terahertz signal sends the transition edges sensor (1-4) to, and transition edges sensor (1-4) sends the signal of acquisition to
The current signal of transition edges sensor (1-4) is read and is amplified by superconducting quantum interference device (1-5), superconducting quantum interference device,
The voltage signal that can carry out electricity processing is generated, the voltage signal of generation is sent into after data processing module (1-6) processing
It controls computer (1-2), in the terahertz image of the display screen display human body of control computer (1-2).
5. Terahertz human body security check system as claimed in claim 2, it is characterised in that: the height of second track (4) is high
In the height of first track (2), so that the visual angle of the optical camera (6) is not by the first track (2), the first driving motor
(3) and the blocking of principal reflection mirror (1-1).
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| CN201811019363.4A CN109001836B (en) | 2018-09-03 | 2018-09-03 | Terahertz human body security check system |
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| CN201811019363.4A CN109001836B (en) | 2018-09-03 | 2018-09-03 | Terahertz human body security check system |
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| CN109001836B CN109001836B (en) | 2019-10-15 |
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Cited By (1)
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| CN109633774A (en) * | 2018-12-26 | 2019-04-16 | 苏州耶拿微电子有限公司 | The passive superconduction Terahertz human body security check system of 340GHz |
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