CN1484023A - Muti-sensitive probe detector of continuous wave - Google Patents
Muti-sensitive probe detector of continuous wave Download PDFInfo
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- CN1484023A CN1484023A CNA021370249A CN02137024A CN1484023A CN 1484023 A CN1484023 A CN 1484023A CN A021370249 A CNA021370249 A CN A021370249A CN 02137024 A CN02137024 A CN 02137024A CN 1484023 A CN1484023 A CN 1484023A
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- continuous wave
- sensing head
- muti
- sensitive probe
- control panel
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Abstract
The invention refers to a signal transmitting device and an alarming device, especially a continuous wave multi-sensitive head detecting device. It mainly includes sensitive head, signal amplifier, DSP, electromagnetic OSC, etc, the electromagnetic OSC linked with transmitting line of the sensitive head, and the receiving line of the sensitive head linked with the signal amplifier, is linked with the computer through DSP and at last linked with control panel.
Description
Technical field
The present invention relates to signaling device and warning device class, particularly a kind of muti-sensitive probe detector of continuous wave.
Background technology
The domestic Detection Techniques that adopt usually at present are the single sensing head Detection Techniques of monopulse formula, though this technology can be measured metal object, can't position being detected object, also can't detect the size of testee certainly; For the influence of metal object on every side, as reinforcing bar in floor or the ceiling etc., can cause the decline of local sensitivity, owing to the reason that is single sensing head, want to improve the sensitivity at this place, then must improve the sensitivity of total system, so then cause other position sensitivity too high probably, and produce the wrong report phenomenon; When simultaneously monopulse was surveyed, its radiating circuit cut out after launch pulsating wave immediately, and receiving circuit is opened and carried out signal and receive then, and phenomenon appears failing to report in this middle delay that a time is arranged easily, and detection to pass through speed slower.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of muti-sensitive probe detector of continuous wave is provided, and this device adopts a plurality of sensing heads, whole search coverage can be divided into a plurality of zonules, adopt continuous wave to survey simultaneously, promptly emission and run-down lines are opened.
The object of the invention realizes being finished by following technical scheme: a kind of muti-sensitive probe detector of continuous wave, comprise that mainly sensing head promptly transmits and receives circuit, signal amplifier, digital signal processor etc., it is characterized in that, also comprise hertz oscilltor, continuous wave amplifier, control panel etc., wherein hertz oscilltor is connected with the emission circuit of sensing head by the continuous wave amplifier, the receiving lines of sensing head connects signal amplification processor, be connected with computing machine through digital signal processor again, be connected on the control panel at last.The quantity that is provided with of sensing head is more than one in connection line.
Principle of the present invention is, in an electromagnetic field, the mobile meeting of metal object produces eddy current on the surface of metallic object, and the electromagnetic field that eddy current produces produces a counter current in transmitting coil, and the eddy current that each different metal body produces is different, detect this small variation and handle, just can judge metal object size and shape in electromagnetic field by computing machine.
The emission circuit that workflow of the present invention is a hertz oscilltor by each sensing head sends the continuous electric magnetic wave, and the electromagnetic wave that sensing head sends is full of whole search coverage; The electromagnetic wave that sends is received by the receiving lines of sensing head again, if metal is arranged in search coverage, then produce eddy current in the metal surface, eddy current produces a back-emf, promptly forms an opposite magnetic field, has changed the signal amplitude that each sensing head is received, in case each sensing head receives corresponding signal, by the different situations analysis of data processor, judge the size of measured object, and be located each sensing head number of collection of letters.To accurately know the position of measured object, need carry out lot of data handles, because different weapons, diverse location, the signal that different azimuth produced are different, combination under the various situations that produced is very complicated, so must handle the data that measure with data processor, find a kind of pattern that meets, thereby determine the position of weapon.
Advantage of the present invention is, can detect the size that is detected thing and can be located, and can overcome the influence of environment, the sensitivity of search coverage is consistent detection accuracy, the possibility of reduce wrong report greatly simultaneously, failing to report has improved the speed of surveying of passing through.
Summary of drawings
Accompanying drawing 1 is that monopulse list sensing head is surveyed synoptic diagram;
Accompanying drawing 2 is surveyed synoptic diagram for the present invention;
Accompanying drawing 3 is an embodiment of the invention flow diagram;
Accompanying drawing 4 is a control panel synoptic diagram in the embodiment of the invention;
Concrete technical scheme
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Present embodiment is a weapon detection door, can be used for airport, bank or the like.Embodiment: shown in Fig. 1-5, number in the figure 1-13 represents a head (1), side plate (2), sensing head (3), search coverage (4), control panel (5), switch (6), alarm indication plate (7), graph of signal strength (8), red alarm pilot lamp (9), green ready light (10), yellow pilot lamp (11), LCD display board (12), the keyboard (13) waited for respectively.
Side plate (2) is positioned at a head (1) both sides, sensing head (3) is distributed on the side plate (2), every side is provided with six sensing heads (3), door head (1) is total search coverage with the zone that the side plate (2) of its both sides is formed, because splitting of sensing head, again total search coverage is divided into 18 search coverages (4), control panel (5) is positioned at a head (1) front, and it contains on/off key switch (6), alarm indication plate (7), LCD display board (12) (being used for the display system operating parameter) and is used for the keyboard (13) of input operation parameter.Alarm indication plate (7) has one 3 * 6 led array, the signal that shows 18 search coverages, the real-time signal strength of a LED bar chart (8) expression target, also comprise a red alarm pilot lamp (9), a green ready light (10), the yellow pilot lamp (11) of waiting for, all electronic units are contained in door in front.
Its embedded micro-processor and digital signal processor analysis are from the data of sensing head (3) in use in the present invention, and alarm indication panel (7) shows the signal of 18 detecting areas (4) in total search coverage.When screening, before warning, survey metallic object earlier and whether reached weapon size and shape, significantly reduced the wrong report that a spot of harmless metal (as key and coin) causes like this as weapon.When a size is carried through total search coverage with the shape metallic object identical with weapon, power according to its signal reaction in 18 zones, and be reflected on the relevant position on the alarm indication plate (7) on the control panel (5), the security staff can orient the definite position of object.If more than one of the weapon that carries, the position of each part all is revealed.The loss of signal of the near-earth subregion that the structural metal in the supporting floor causes can be carried out independent regulation by the sensing head to the sensitivity of control near-earth subregion and accurately compensate, and so just needn't increase the total sensitivity of detection door.And traditional detection door will improve total sensitivity will survey the object of near-earth height in this case the time, so that too sensitive and produce and report by mistake when surveying in the height district.Because this detection door has reduced the wrong report to harmless individual metal, screen efficient and just improve greatly, thereby increased by the personnel's of examination through-rate.In case report to the police, the safety inspector can locate suspicious object immediately, screens efficient, degree of accuracy and safety check quality and all is enhanced.
To accurately know the position of weapon, need carry out lot of data handles, because different weapons, diverse location, the signal that different azimuth produced are different, combination under the various situations that produced is very complicated, so must handle the data that measure with data processor, find a kind of pattern that meets, thereby determine the position of weapon.
If use the weapon detection door that surpasses 1 quantity in a certain occasion, for fear of phase mutual interference between the detection door, it is available that detection door has designed multiple electromagnetic wave transmission frequency, can utilize different transmission frequencies to avoid disturbing.
Owing to adopted a plurality of sensing heads, if its electromagnetic field of working simultaneously can produce mutual disturbed condition, influence the sensitivity of sensing head, the method for solution be according to time-sharing procedure with the separately work of a plurality of sensing heads, record and analyze with computing machine again after the data and synthesize.
Claims (3)
1. muti-sensitive probe detector of continuous wave, comprise that mainly sensing head promptly transmits and receives circuit, signal amplifier, digital signal processor etc., it is characterized in that, also comprise hertz oscilltor, continuous wave amplifier, control panel etc., wherein hertz oscilltor is connected with the emission circuit of sensing head by the continuous wave amplifier, the receiving lines of sensing head connects signal amplification processor, is connected with computing machine through digital signal processor again, is connected on the control panel at last.The quantity that is provided with of sensing head is more than one in connection line.
2. a kind of muti-sensitive probe detector of continuous wave according to claim 1, the quantity that it is characterized in that described sensing head is 12.
3. a kind of muti-sensitive probe detector of continuous wave according to claim 1 is characterized in that the alarm indication plate is arranged on the described control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021370249A CN1484023A (en) | 2002-09-17 | 2002-09-17 | Muti-sensitive probe detector of continuous wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021370249A CN1484023A (en) | 2002-09-17 | 2002-09-17 | Muti-sensitive probe detector of continuous wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1484023A true CN1484023A (en) | 2004-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021370249A Pending CN1484023A (en) | 2002-09-17 | 2002-09-17 | Muti-sensitive probe detector of continuous wave |
Country Status (1)
| Country | Link |
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| CN (1) | CN1484023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828591A (en) * | 2018-07-04 | 2018-11-16 | 中国矿业大学(北京) | A kind of portable radar detecting devices and system |
-
2002
- 2002-09-17 CN CNA021370249A patent/CN1484023A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828591A (en) * | 2018-07-04 | 2018-11-16 | 中国矿业大学(北京) | A kind of portable radar detecting devices and system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |