CN106094050A - A kind of Terahertz active safety check instrument - Google Patents
A kind of Terahertz active safety check instrument Download PDFInfo
- Publication number
- CN106094050A CN106094050A CN201610425109.9A CN201610425109A CN106094050A CN 106094050 A CN106094050 A CN 106094050A CN 201610425109 A CN201610425109 A CN 201610425109A CN 106094050 A CN106094050 A CN 106094050A
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- CN
- China
- Prior art keywords
- terahertz
- safety check
- check instrument
- emission source
- instrument
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
Abstract
The invention discloses a kind of Terahertz active safety check instrument, including: for generating the terahertz emission source of Terahertz, it is electron tube, and the outfan in described terahertz emission source is connected to the antenna on terahertz sources to examined object；For receiving and transmit the optical system of the Terahertz of examined object reflection；For the terahertz detector of the Terahertz of receiving optics transmission, it is arranged on the Terahertz issuing side of optical system；For exporting the image processing system of safety check image, it is connected with described terahertz detector.The safety check instrument of the present invention uses electron tube as the emission source of Terahertz actively safety check instrument, it is possible to reaches the safety check effect that video camera is the same, can reach the safety check speed of 24 frames/second.And whether examined object such as human body can be carried gun control cutter sintex and these dangerous materials are placed on the position of human body and detect.
Description
Technical field
The present invention relates to a kind of safety check instrument, a kind of active safety check of the Terahertz with electron tube as emission source
Instrument.
Background technology
Safety check instrument is that one is placed in the public places such as railway station, airport subway station tourist attraction and is made whether personnel
Take the safety check apparatus of dangerous materials or contraband.
Increasingly serious recently as security situation, more urgent to the demand of safety check instrument, each company is all developing base
Safety check instrument in various technological means.Most often metal detector gate, utilizes metal detection principle to judge whether human body is taken
Band metal, it is impossible to detection pottery waits other article and cannot detect the shapes and sizes of metal.Remaining big portion of safety check instrument
Divide and all develop according to electromagnetic wave principle, including X-ray safety check instrument millimeter wave safety check instrument Terahertz safety check instrument etc..Wherein wrap
Including X-ray back scattering safety check instrument, it is used for checking with passenger whether carrying the contrabands such as metallic explosive thing drugs.Due to X
Ray is harmful, and European Union prohibits the use of at present；The crack shot human-body safety detector that domestic Qi Luda company develops exists
Part railway station uses.Additionally, the wavelength of the millimeter wave of millimeter wave safety check instrument employing is longer, therefore resolution is relatively low, i.e. can only
Identify larger-size dangerous materials.Terahertz safety check instrument is divided into passive type and active two kinds, and Thruvision company of Britain grinds
The Terahertz passive imaging safety check instrument of system mainly has T4000, T5000, TS4 series, the most sells all over the world, in portion
Extension set field uses.Wherein, passive type Terahertz safety check instrument (as shown in Figure 2) need not use in active Terahertz safety check instrument
Terahertz emission source, but the faint THz wave produced by human body oneself carries out imaging and safety check to human body.Due to people
The THz wave that body self produces is the faintest, and therefore Terahertz passive type safety check instrument detection speed is the slowest.Current domestic existing quilt
Dynamic formula Terahertz safety check instrument product, " the rich micro-Terahertz human body safety check instrument " developed by Zhong electricity group 38.Terahertz is active
Safety check instrument (as shown in Figure 1) is that human body is irradiated and reaches safety detection, too by the THz source utilizing safety check instrument to be equipped with
Hertz actively safety check instrument needs terahertz emission source, existing terahertz emission source to have optically-based effect and based on electronics
Two big classes.The terahertz emission source output of optically-based effect is low；Terahertz emission source based on electronics includes that electricity is true
Pocket part, semiconductor laser, semiconductor device power is low, in addition to electron tube, the output work of other THz source
Rate is the lowest, it is impossible to makes safety check instrument reach faster and detects speed.The output in terahertz emission source determines the speed of safety check,
The low picture that just can only obtain a width as photographing unit of power, and power higher position can obtain safety check as video camera
Video.
Summary of the invention
As various extensive and careful researchs and the result of experiment, it has been found by the inventor that use electricity true
Pocket part can reach 24 frames/second as the terahertz emission source of safety check instrument, the safety check speed of safety check instrument.Based on this discovery,
Complete the present invention.
It is an object of the invention to solve at least the above and/or defect, and at least will be described later excellent is provided
Point.
In order to realize according to object of the present invention and further advantage, it is provided that a kind of Terahertz active safety check instrument,
The terahertz emission source of described safety check instrument uses electron tube.
Preferably, frequency 100GHz of described electron tube.
Preferably, the one during described electron tube is klystron, travelling-wave tube, backward wave tube.
Preferably, described safety check instrument includes:
For generating the terahertz emission source of Terahertz, it is electron tube, the outfan in described terahertz emission source
It is connected to the antenna on terahertz sources to examined object；
For receiving and transmit the optical system of the Terahertz of examined object reflection；
For the terahertz detector of the Terahertz of receiving optics transmission, its Terahertz being arranged on optical system is sent out
Go out end；
For exporting the image processing system of safety check image, it is connected with described terahertz detector.
Preferably, described optical system is optical lens group.
Preferably, the amount of transparency 1 of described optical lens group.
Preferably, the safety check speed of described safety check instrument is 24 frames/second.
Heretofore described electron tube refers under vacuum conditions, utilizes band point particle to be moved through interelectrode
Journey thus realize microwave signal concussion or amplify a kind of electronic system, people are the most also utilizing charged particle
Motion in specific gas and produce signal amplify or the device of conversion is attributed to electron tube.Structure generally comprises
Electron gun, focusing system, high-frequency structure and collector etc..Electron tube generally comprises klystron, travelling-wave tube and backward wave tube
Deng.
The present invention at least includes following beneficial effect: the safety check instrument of the present invention uses electron tube as Terahertz actively
The emission source of safety check instrument, it is possible to reach the safety check effect that video camera is the same, the safety check speed that can reach 24 frames/second is (common
Video camera is exactly the speed of 24 frames/second).And whether examined object such as human body can be carried gun control cutter pottery
Cutter and these dangerous materials are placed on the position of human body and detect, and can either detect the danger carried with human body simultaneously
Product or contraband shapes and sizes, can detect by the most real-time carrying out again.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this
Invention research and practice and be understood by the person skilled in the art.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of Terahertz of the present invention active safety check instrument；
Fig. 2 is the structural representation of passive type Terahertz safety check instrument；
Fig. 3 is the structural representation of electron tube of the present invention.
Detailed description of the invention:
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
Should be appreciated that used herein such as " have ", " comprising " and " including " term do not allot one or many
Other element individual or the existence of a combination thereof or interpolation.
A kind of Terahertz active safety check instrument, the terahertz emission source of described safety check instrument uses electron tube.Use electricity
Vacuum device is as the emission source of Terahertz actively safety check instrument, it is possible to reaches the safety check effect that video camera is the same, can reach
The safety check speed of 24 frames/second.
Electron tube system is constituted and principle is as it is shown on figure 3, its operation principle is: the electron beam that gun cathode is launched
Compressing between negative electrode and anode and accelerate, after acceleration, electronics maintains certain cross sectional shape to be tied by high frequency under focusing system
Structure, high-frequency structure reduces the phase velocity of electromagnetic wave, reaches Tong Bu with electron motion, by radio frequency incident electric fields effect electronics with
The THz wave of the input circuit input of high-frequency structure fully interacts, and can gradate electron beam into Terahertz
Wave energy, is exported by output loop, and collector is positioned at end, is used for intercepting and capturing surrendering the electronics after energy by high-frequency structure.
In technique scheme, frequency 100GHz of described electron tube, it is ensured that safety check instrument has higher
Resolution, the frequency of employing is the highest, and resolution is the highest, more can identify less dangerous materials.
In technique scheme, as it is shown in figure 1, described safety check instrument includes: for generating the terahertz emission of Terahertz
Source 1, it is electron tube, and the outfan in described terahertz emission source is connected on terahertz sources to examined object
Antenna 2；For receiving and transmit the optical system 3 of the Terahertz of examined object reflection；Transmit for receiving optics 3
The terahertz detector 4 of Terahertz, it is arranged on the Terahertz issuing side of optical system 3；For exporting the figure of safety check image
As processing system 5, it is connected with described terahertz detector 4；Described image processing system 5 uses computer；In above-mentioned technology
In scheme, by antenna by with the power illumination of terahertz emission source (electron tube) to human body to be detected, human body is anti-
The THz wave penetrated passes in terahertz detector by collection and the convergence of optical system, and terahertz detector will receive
To the incoming image processing system of information of THz wave finally exports the safety check image result of human body, whether human body is carried danger
Danger product detect.
In technique scheme, described optical system is optical lens group, the amount of transparency of described optical lens group
1, the advantage of battery of lens is need not be able to scan with direct imaging, promotes image taking speed.
In technique scheme, described electron tube is the one in klystron, travelling-wave tube, backward wave tube.
In technique scheme, the safety check speed of described safety check instrument is 24 frames/second, can reach the bat of common camera
Take the photograph speed.
The safety check instrument of the present invention uses the active imaging technique of Terahertz to make, and conventional dangerous materials can be included gun
Controlled knife sintex etc. is imaged, for public places such as railway station, airport subway station tourist attractions to people
Member is made whether to carry the safety inspection of gun control cutter sintex etc..
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily
Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (7)
1. a Terahertz active safety check instrument, it is characterised in that the terahertz emission source of described safety check instrument uses electrovacuum device
Part.
2. Terahertz active safety check instrument as claimed in claim 1, it is characterised in that the frequency of described electron tube
100GHz。
3. Terahertz active safety check instrument as claimed in claim 1, it is characterised in that described electron tube be klystron,
One in travelling-wave tube, backward wave tube.
4. Terahertz active safety check instrument as claimed in claim 1, it is characterised in that described safety check instrument includes:
For generating the terahertz emission source of Terahertz, it is electron tube, and the outfan in described terahertz emission source connects
For by the antenna on terahertz sources to examined object；
For receiving and transmit the optical system of the Terahertz of examined object reflection；
For the terahertz detector of the Terahertz of receiving optics transmission, its Terahertz being arranged on optical system sends
End；
For exporting the image processing system of safety check image, it is connected with described terahertz detector.
5. Terahertz active safety check instrument as claimed in claim 4, it is characterised in that described optical system is optical lens
Group.
6. Terahertz active safety check instrument as claimed in claim 5, it is characterised in that the amount of transparency of described optical lens group
≧1。
7. Terahertz active safety check instrument as claimed in claim 1, it is characterised in that the safety check speed of described safety check instrument is 24
Frame/second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425109.9A CN106094050A (en) | 2016-06-15 | 2016-06-15 | A kind of Terahertz active safety check instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425109.9A CN106094050A (en) | 2016-06-15 | 2016-06-15 | A kind of Terahertz active safety check instrument |
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Family
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| CN201610425109.9A Pending CN106094050A (en) | 2016-06-15 | 2016-06-15 | A kind of Terahertz active safety check instrument |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596461A (en) * | 2016-12-26 | 2017-04-26 | 安徽旺家源门业有限公司 | Hazardous chemical gas detection terahertz safety door and detection method |
| CN107728222A (en) * | 2017-09-01 | 2018-02-23 | 清华大学 | Active Terahertz safety check imaging method and system |
| CN108845369A (en) * | 2018-06-14 | 2018-11-20 | 江苏心磁超导体有限公司 | Terahertz safe examination system |
| CN110045349A (en) * | 2019-04-28 | 2019-07-23 | 软通智慧科技有限公司 | A kind of identification method, device, equipment and storage medium |
| CN110060448A (en) * | 2019-04-28 | 2019-07-26 | 软通智慧科技有限公司 | A kind of based reminding method, device, equipment and storage medium |
| RU2702913C1 (en) * | 2019-02-26 | 2019-10-14 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Method of detecting hidden objects on terahertz images of a human body |
| WO2020134320A1 (en) * | 2018-12-28 | 2020-07-02 | 同方威视技术股份有限公司 | Portable terahertz security check apparatus |
| CN111694065A (en) * | 2019-03-14 | 2020-09-22 | 佳能株式会社 | Moving body |
| CN111751896A (en) * | 2019-03-27 | 2020-10-09 | 北京快安科技有限公司 | Three-dimensional display method for security inspection result |
| CN113848193A (en) * | 2021-09-23 | 2021-12-28 | 上海亨临光电科技有限公司 | Passive terahertz human body security inspection image extraction method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596461A (en) * | 2016-12-26 | 2017-04-26 | 安徽旺家源门业有限公司 | Hazardous chemical gas detection terahertz safety door and detection method |
| CN107728222A (en) * | 2017-09-01 | 2018-02-23 | 清华大学 | Active Terahertz safety check imaging method and system |
| CN107728222B (en) * | 2017-09-01 | 2019-09-27 | 清华大学 | Active Terahertz safety check imaging method and system |
| CN108845369A (en) * | 2018-06-14 | 2018-11-20 | 江苏心磁超导体有限公司 | Terahertz safe examination system |
| WO2020134320A1 (en) * | 2018-12-28 | 2020-07-02 | 同方威视技术股份有限公司 | Portable terahertz security check apparatus |
| US11733422B2 (en) | 2018-12-28 | 2023-08-22 | Nuctech Company Limited | Portable terahertz security inspection apparatus |
| RU2702913C1 (en) * | 2019-02-26 | 2019-10-14 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Method of detecting hidden objects on terahertz images of a human body |
| CN111694065A (en) * | 2019-03-14 | 2020-09-22 | 佳能株式会社 | Moving body |
| CN111751896A (en) * | 2019-03-27 | 2020-10-09 | 北京快安科技有限公司 | Three-dimensional display method for security inspection result |
| CN110045349A (en) * | 2019-04-28 | 2019-07-23 | 软通智慧科技有限公司 | A kind of identification method, device, equipment and storage medium |
| CN110060448A (en) * | 2019-04-28 | 2019-07-26 | 软通智慧科技有限公司 | A kind of based reminding method, device, equipment and storage medium |
| CN113848193A (en) * | 2021-09-23 | 2021-12-28 | 上海亨临光电科技有限公司 | Passive terahertz human body security inspection image extraction method |
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