CN2766250Y - Electronic aim detecting system - Google Patents
Electronic aim detecting system Download PDFInfo
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- CN2766250Y CN2766250Y CN 200420114716 CN200420114716U CN2766250Y CN 2766250 Y CN2766250 Y CN 2766250Y CN 200420114716 CN200420114716 CN 200420114716 CN 200420114716 U CN200420114716 U CN 200420114716U CN 2766250 Y CN2766250 Y CN 2766250Y
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Abstract
The utility model discloses an electronic aim detecting system, which comprises a structural framework, a detecting module and a control alarm module, wherein the structural framework is designed into a framework of a shape like the Chinese character of 'men' which is composed of a left side doorframe, a right side doorframe and a top frame; the detecting modules is installed in the framework of a shape like the Chinese character of 'men'; the detecting module detects electronic aims and sends detecting signals into the control alarm module; the control alarm module receives the detecting signals output by the detecting module and carried out processing, control and alarm to the detecting signals; the detecting module further comprises four nonlinear node detecting radars. When the electronic aims go through the framework of a shape like the Chinese character of 'men', the electronic aim detecting system can detect that whether in and out personnel carry about information products of a mobile phone, a digital camera, etc. and can emit alarm prompt in real time. The utility model can provide safety insurance for special occasions and can be widely used for the detection of information safety.
Description
Technical field
The utility model relates to the safety detection to nonmetal target, more specifically refers to a kind of electronic target detection system, and this detection system is used for electronic products such as detection of handset, digital camera.
Background technology
Metal detection door or detector utilize electromagnetic induction effect to survey metal, and when the signal of alternation shone the metal surface, this surface will produce eddy current changed the amplitude of reflected signal and phase place.Can survey the existence of metal target by these variations of circuit extraction, this technology is generally used for surveying metallic mine or metal cutter etc. is detected on the airport.For nonmetallic electronic target, this kind technology can not be surveyed.
The field intensity detection technique utilizes the signal of receiving target emission to come the detected electrons product, but when such target was not worked, as mobile phone shutdown, because target does not transmit, the field intensity detection technique just can not detect target.Many electronic targets, as: digital camera, recording pen etc. does not transmit, and the field intensity detection technique can't find target at all.So such technology is used for information security inspection aspect and has open defect.
The microwave that the non-linear node detector has utilized non-linear node radiation characteristic again comes work, is generally used for surveying burying or hidden wiretap, electronic fuse etc.This product is mainly towards the one man operation, be used for motion process and survey electronic target, volume is little, simple in structure, is not designed to large-scale, fixing, the integrated work of multimachine, adopts the product of Computer Processing signal, and the information security that does not reach extensive occasion detects requirement.
Summary of the invention
At the above-mentioned shortcoming that exists in traditional safety detection technology, the purpose of this utility model is to provide a kind of electronic target detection system, this electronic target detection system not only can in running order be that electronic target detects, can also also can detect the electronic target that is in off-mode.
To achieve these goals, the utility model adopts following technical scheme:
This electronic target detection system comprises structural framing, detecting module and control warning module,
Structural framing is " door " type framework that is made of left and right side doorframe, top frame;
Detecting module is installed in " door " type framework, and detecting module is surveyed electronic target, and detectable signal is sent in the control warning module;
Control warning module receives the detectable signal of detecting module output, and detectable signal is handled, controls, reported to the police.
Described detecting module further comprises four non-linear node detection radars, wherein the dual-mode antenna of two non-linear node detection radars is embedded in the doorframe of left side, the dual-mode antenna of two non-linear node detection radars is embedded in the doorframe of right side in addition, and the detecting module main frame is installed in the upper door frame.
Described each non-linear node detection radar includes two radiating circuits, two receiving circuits, antenna array element, wherein, the received signal frequency of receiving circuit is secondary combination and three composite wave frequencies of the emission signal frequency of radiating circuit, be that emission signal frequency is f1 and f2, the received signal frequency is f1+f2, f1+2f2.
Described two radiating circuits, reference frequency source of two common uses of receiving circuit.
In technique scheme of the present utility model, the electronic target detection system comprises structural framing, detecting module and control warning module, and structural framing is designed to " door " type framework that is made of left and right side doorframe, top frame; Detecting module is installed in " door " type framework, and detecting module is surveyed electronic target, and detectable signal is sent in the control warning module; Control warning module receives the detectable signal of detecting module output, and detectable signal is handled, controls, reported to the police.Detecting module further comprises four non-linear node detection radars.When electronic target passes through " door " type framework, whether system can detect the turnover personnel and carry as information products such as mobile phone, digital cameras, and can send alarm in real time, this system has overcome owing to the defective on the detection principle that adopts metal detection technology, field intensity Detection Techniques to exist when surveying electronic target, and the safety guarantee of special occasions can be provided, can be widely used in during information security detects.
Description of drawings
Fig. 1 is the utility model general structure and principle schematic.
Fig. 2 is the utility model detecting module principle schematic.
Fig. 3 is the radiating circuit schematic block diagram of the utility model detecting module.
Fig. 4 is the receiving circuit schematic block diagram of the utility model detecting module.
Embodiment
For further specifying above-mentioned purpose of the present utility model, technical scheme and effect, in conjunction with above-mentioned each figure the utility model is described in detail by the following examples.
See also Fig. 1,
This electronic target detection system comprises structural framing 1, detecting module 2 and control warning module 3,
Structural framing 1 is " door " type framework that is made of left and right side doorframe, top frame;
Detecting module 2 is installed in " door " type framework, and 2 pairs of electronic targets of detecting module are surveyed, and detectable signal is sent in the control warning module 3;
Control warning module 3 receives the detectable signal of detecting module 2 outputs, and detectable signal is handled, controls, reported to the police.
Described detecting module 2 further comprises four non-linear node detection radars, wherein the dual-mode antenna of two non-linear node detection radars is embedded in the left side doorframe of structural framing 1, the dual-mode antenna of two non-linear node detection radars is embedded in the right side doorframe of structural framing 1 in addition, and detecting module 2 main frames are installed in the upper door frame of structural framing.
Please in conjunction with shown in Figure 2, described each non-linear node detection radar includes two radiating circuits, two receiving circuits, antenna array element.
Described two radiating circuits, reference frequency source G of two common uses of receiving circuit.
Wherein the received signal frequency is secondary combination and three composite wave frequencies of emission signal frequency, and promptly emission signal frequency is f1 and f2, and receive frequency is: fA=f1+f2, fB=f1+2f2.Four circuit all adopt phaselocked loop in the module, use a reference frequency source fr jointly, and when the reference source frequency drift, four circuit detect Effect on Performance thereby overcome frequency drift effectively to system all with same trend drift.
See also shown in Figure 3,
Fig. 3 is the schematic diagram of radiating circuit in the detecting module.The signal of master oscillator 31 is the signals behind the reference source phase locking frequency multiplying, and this signal level is less, reaches the power about 0.5W after amplifying through power amplifier 32; Spurious signal such as harmonic wave avoided interference receiving circuit during wave filter 33 filterings transmitted, and amplified the main signal that shakes in back then and was launched by emitting antenna 34.
See also shown in Figure 4,
Fig. 4 is the schematic diagram of receiving circuit in the detecting module.Very faint through the signal that antenna 41 receives, after these signal process wave filter 42 filtering spurious signals, amplify by low noise amplifier 43 again, utilize it to reduce system noise and improve signal quality, signal and received signal from local oscillator 44 obtain intermediate-freuqncy signal after frequency mixer 45 mixing, send computing machine 47 sampling processing after intermediate-freuqncy signal process intermediate frequency amplifier 46 processing and amplifying.
Electronic target detection system of the present utility model based on principle be described below:
Naturally the object of Cun Zaiing as, trees, flowers and plants, rock, human body etc. do not comprise non-linear node; And the PN junction in the electronic product is the typical nonlinear node.The important physical of non-linear node is: can give off harmonic signal again under the microwave signal irradiation.So under the irradiation of microwave signal, natural forms can not give off harmonic signal again, and electronic product is incited somebody to action radiate harmonic signal again.According to this kind principle, when if personnel carry electronic product through the electronic target detecting gate system in the work, the electronic product that he carries is incited somebody to action radiate harmonic signal again under the irradiation of microwave signal, system receiving module receives this signal just can judge whether carry electronic product.Also have non-linear node on the metal that gets rusty, system need possess the ability of distinguishing electronic target and metal node.Compare by the radiation characteristic again to both, the third harmonic of finding the metal node is greater than second harmonic, and the second harmonic of electronic target is greater than third harmonic; So can divide metal node and electronic target by active zone by the secondary and the harmonic signal power that relatively receive, the assurance system accurately surveys electronic target.
In the utility model,
System is designed to the structure of detecting gate, and exploring antenna is installed in left and right two doorframes, and power supply and detection main frame are installed in the top.Adopt this kind structure installation form, detection radar embedded product inside, entire product is elegant in appearance, and three partly mounting or dismounting are convenient.This kind structure is particularly suitable for being erected at the big place of flow of personnel amount, forms sense channel easily.
The integration design,
Because the scope that the operating distance of separate unit detection radar need detect with comprehensive covering inadequately, system has adopted the mode of four detection radar simultaneous, in upper left, the lower-left of system structural framework, upper right and four orientation, bottom right are equipped with dual-mode antenna, guarantee the investigative range of product.
Detection mode,
Different with common radar, native system receives is not the signal of the target a certain frequency of initiatively launching, signal that neither the passive same frequency that reflects of target, but the signal with harmonic characteristic that the receiving target simultaneously of transmitting gives off again.Adopt the detection mode of this kind active, even the electronic target that is detected is not worked, system also can detect electronic target, can remedy the passive detection mode when target is not worked with regard to undetectable shortcoming.
Frequency is selected,
The frequency of system is selected also through a large amount of tests, if underfrequency then signal wavelength is long influences systemic resolution, system dimension is also big; Otherwise if frequency is too high, signal attenuation is too fast.After taking all factors into consideration, system works is in L, S-band.
The composite wave mode,
Test shows: under a kind of irradiation of fixed frequency signal, non-linear node is radiate harmonic again; Under the signal of two kinds of different frequencies shone simultaneously, non-linear node is the radiation composite wave again, and the reradiative composite wave property class of target is similar to the previous case.Because fixedly have harmonic signal in the radiating circuit frequency source, this harmonic signal has interference in the previous case to received signal; If system adopts a kind of composite wave working method in back, the signal of launching two kinds of different frequencies respectively receives their composite wave simultaneously, can avoid the harmonic wave in transmission frequency source effectively.
Correlation reception frequency of phase locking source,
Because the frequency of system's emission, received signal has direct composite function relation, keeping system's signal source frequency stable also is one of gordian technique.System adopts phaselock technique and correlation reception to guarantee the frequency stability of system.
Signal processing mode,
System adopts computing machine to come processing signals, and computer acquisition is handled through weighted filtering, the unsteady scheduling algorithm that changes of thresholding after radar signal, differentiates whether detect electronic target at last.After adopting computing machine, system can provide man-machine interface preferably, comprises signal demonstration, sound and light alarm etc.
Native system detection module technical scheme is used for reference the scheme of non-linear node detector, compares the intensity of secondary and three two kinds of signals, and metal non-linear node and electronic target can accurately be distinguished by the assurance system.Usually the useful signal of non-linear node detector reception is reradiative secondary of target and third harmonic, and frequency is respectively 2f0,3f0; Fixedly having frequency in detector transmiting signal source (frequency is f0) is the harmonic signal of 2f0,3f0.Because the two frequency is all 2f0,3f0, the harmonic signal when adopting this scheme in the radiating circuit signal source leaks into will disturb in the receiving circuit and receives useful signal, and receiving sensitivity is reduced.In the native system scheme, transmitting is two kinds of unlike signals that frequency is f1, f2, and receiving useful signal is two kinds of signal secondaries and three composite waves, and frequency is respectively f1+f2 and 2f1+f2.Because receive useful signal and radiating circuit signal source harmonic frequency difference big (2f0f1+f2,3f02f1+f2), differentiation is easier to; Adopt means of filtering just to avoid the emissive source harmonic wave preferably and leak the interference problem that causes.
Adopted the working method of many non-linear detection radar parallel connections in the native system, enlarged the reach of detecting module, made sensing range cover whole doorframe effectively, and can come the concrete orientation of localizing objects according to the signal intensity of every radar.The non-linear node detector can not satisfy the requirement of reach in the information security detection system because reach is little.
The utility model can have been used considerable confidential occasion, as in order to ensure information safety, forbids that all personnel carry the electronic product that mobile phone, pager, recording pen, digital camera and USB flash disk etc. might cause the leakage of a state or party secret and enter.Present detecting gate can only detect metal, as the safety detection door on airport; Do not have special because the information security detecting gate of detected electrons target.The blank that electronic target detects has been filled up in the development of this product, for the information security in special place, particularly confidential position provides effective guarantee means.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.
Claims (4)
1, a kind of electronic target detection system,
It is characterized in that:
This system comprises structural framing, detecting module and control warning module,
Structural framing is " door " type framework that is made of left and right side doorframe, top frame;
Detecting module is installed in " door " type framework, and detecting module is surveyed electronic target, and detectable signal is sent in the control warning module;
Control warning module receives the detectable signal of detecting module output, and detectable signal is handled, controls, reported to the police.
2, electronic target detection system as claimed in claim 1,
It is characterized in that;
Described detecting module further comprises four non-linear node detection radars, wherein the dual-mode antenna of two non-linear node detection radars is embedded in the doorframe of left side, the dual-mode antenna of two non-linear node detection radars is embedded in the doorframe of right side in addition, and the detecting module main frame is installed in the upper door frame.
3, electronic target detection system as claimed in claim 2,
It is characterized in that:
Described each non-linear node detection radar includes two radiating circuits, two receiving circuits, antenna array element, wherein, the received signal frequency of receiving circuit is secondary combination and three composite wave frequencies of the emission signal frequency of radiating circuit, and promptly emission signal frequency is f
1And f
2, the received signal frequency is f
1+ f
2, f
1+ 2f
2
4, electronic target detection system as claimed in claim 3,
It is characterized in that:
Described two radiating circuits, reference frequency source of two common uses of receiving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114716 CN2766250Y (en) | 2004-12-24 | 2004-12-24 | Electronic aim detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114716 CN2766250Y (en) | 2004-12-24 | 2004-12-24 | Electronic aim detecting system |
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| CN2766250Y true CN2766250Y (en) | 2006-03-22 |
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| CN 200420114716 Expired - Fee Related CN2766250Y (en) | 2004-12-24 | 2004-12-24 | Electronic aim detecting system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315426B (en) * | 2007-05-31 | 2013-03-13 | 株式会社其恩斯 | Photoelectric sensor |
| CN103176181A (en) * | 2011-12-20 | 2013-06-26 | 中国电子科技集团公司第五十研究所 | Nonlinear node detector of frequency modulation continuous wave system |
| CN103869306A (en) * | 2012-12-12 | 2014-06-18 | 中国电子科技集团公司第五十研究所 | Metal and non-linear object composite detector |
| CN104730594A (en) * | 2015-04-14 | 2015-06-24 | 北京博睿勤信息技术有限公司 | Mobile phone detection system |
| CN106054177A (en) * | 2016-05-24 | 2016-10-26 | 广东电网有限责任公司信息中心 | Electronic equipment detection device based on semiconductor component detection |
| CN106772666A (en) * | 2016-11-17 | 2017-05-31 | 中国电子科技集团公司第二十九研究所 | A kind of new violation electronic equipment detecting system and detection method |
| CN112327373A (en) * | 2020-09-22 | 2021-02-05 | 四川中物裕邦科技有限公司 | A safety inspection door for detecting |
| CN113466849A (en) * | 2021-03-16 | 2021-10-01 | 绵阳市游仙区创新科技产业技术研究院 | High-precision positioning system and method based on secondary radar |
-
2004
- 2004-12-24 CN CN 200420114716 patent/CN2766250Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315426B (en) * | 2007-05-31 | 2013-03-13 | 株式会社其恩斯 | Photoelectric sensor |
| CN103176181A (en) * | 2011-12-20 | 2013-06-26 | 中国电子科技集团公司第五十研究所 | Nonlinear node detector of frequency modulation continuous wave system |
| CN103869306A (en) * | 2012-12-12 | 2014-06-18 | 中国电子科技集团公司第五十研究所 | Metal and non-linear object composite detector |
| CN103869306B (en) * | 2012-12-12 | 2016-01-06 | 中国电子科技集团公司第五十研究所 | Metal and Nonlinear Parameter composite detecting device |
| CN104730594A (en) * | 2015-04-14 | 2015-06-24 | 北京博睿勤信息技术有限公司 | Mobile phone detection system |
| CN106054177A (en) * | 2016-05-24 | 2016-10-26 | 广东电网有限责任公司信息中心 | Electronic equipment detection device based on semiconductor component detection |
| CN106772666A (en) * | 2016-11-17 | 2017-05-31 | 中国电子科技集团公司第二十九研究所 | A kind of new violation electronic equipment detecting system and detection method |
| CN106772666B (en) * | 2016-11-17 | 2019-04-09 | 中国电子科技集团公司第二十九研究所 | A kind of new violation electronic equipment detection system and detection method |
| CN112327373A (en) * | 2020-09-22 | 2021-02-05 | 四川中物裕邦科技有限公司 | A safety inspection door for detecting |
| CN113466849A (en) * | 2021-03-16 | 2021-10-01 | 绵阳市游仙区创新科技产业技术研究院 | High-precision positioning system and method based on secondary radar |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060322 Termination date: 20121224 |