CN204066305U - Transformer substation security sniffer - Google Patents
Transformer substation security sniffer Download PDFInfo
- Publication number
- CN204066305U CN204066305U CN201420345238.3U CN201420345238U CN204066305U CN 204066305 U CN204066305 U CN 204066305U CN 201420345238 U CN201420345238 U CN 201420345238U CN 204066305 U CN204066305 U CN 204066305U
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- Prior art keywords
- output terminal
- voltage
- sniffer
- transformer substation
- infrared sensor
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model discloses a kind of transformer substation security sniffer, comprise Fresnel Lenses, infrared sensor, current-to-voltage converter, voltage amplifier, signal processor and audible-visual annunciator; Wherein, described Fresnel Lenses is positioned at the dead ahead of infrared sensor, the output terminal of described infrared sensor is connected with the input end of current-to-voltage converter, the output terminal of voltage to current converter is connected with the input end of voltage amplifier, the output terminal of voltage amplifier is connected with the input end of signal processor, and the output terminal of signal processor is connected with the output terminal of audible-visual annunciator; Voltage signal after the utility model transformer substation security sniffer amplifies is through sampling and converting frequency-region signal to, by analyzing the larger radio-frequency component of amplitude, if reach alarming threshold value namely to report to the police, it compared with prior art to have more accurately, stronger detection and anti-interference, anti-wrong report ability.
Description
Technical field
The utility model belongs to safety precaution field, particularly a kind of transformer substation security sniffer.
Background technology
At present, along with technology and economic develop rapidly, transformer station adopts remote monitoring and operated from a distance substantially, achieves the unmanned guard of transformer station, improves work efficiency, reduce the workload of staff, improve the management of transformer station; But due to the unmanned guard of transformer station, often cause remote transformer station by artificial destruction, the stolen of substation equipment can be occurred.
In view of security detection device in the market mainly contain the various alarms such as pressure activated formula burglar alarm, switch electronic burglar alarm and pressure lucifuge triggering type anti-theft alarming device all also exist disguised bad, cost is high, the more high shortcomings of rate of false alarm.Current security detection device is substantially all by setting an alarming threshold value, report to the police, and the background noise be superimposed upon in useful signal may causing false alarm when the voltage signal after amplification reaches this value.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the voltage signal after a kind of amplification through sample and converting frequency-region signal to, the larger radio-frequency component of analysis amplitude, if reach the transformer substation security sniffer that namely alarming threshold value report to the police; It has more accurately, stronger detection and anti-interference, anti-wrong report ability.
The technical solution realizing the utility model object is:
A kind of transformer substation security sniffer, comprises Fresnel Lenses, infrared sensor, current-to-voltage converter, voltage amplifier, signal processor and audible-visual annunciator; Wherein, described Fresnel Lenses is positioned at the dead ahead of infrared sensor, the output terminal of described infrared sensor is connected with the input end of current-to-voltage converter, the output terminal of voltage to current converter is connected with the input end of voltage amplifier, the output terminal of voltage amplifier is connected with the input end of signal processor, and the output terminal of signal processor is connected with the output terminal of audible-visual annunciator.
Preferably, described infrared sensor adopts rpyroelectric infrared components and parts.
Preferably, described signal processor comprises frequency analyzer and decision circuit, and frequency analyzer is connected with decision circuit.
Preferably, described rpyroelectric infrared components and parts adopt the pyroelectricity components and parts comprising two mutual serial or parallel connections.
Compared with prior art, its remarkable advantage is the utility model:
(1) the utility model transformer substation security sniffer is designed to the frequecy characteristic with human motion, and it has the feature of the bandpass filter of its emission band center greatly about 1 hertz of place.So, enhance the susceptibility to human body, and the misoperation caused by the signal of the frequency had nothing to do with human motion prevented.
(2) voltage signal after the amplification of the utility model transformer substation security sniffer is through sampling and converting frequency-region signal to, by analyzing the larger radio-frequency component of amplitude, if reach alarming threshold value namely to report to the police, it compared with prior art to have more accurately, stronger detection and anti-interference, anti-wrong report ability.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model transformer substation security sniffer.
Embodiment
Below in conjunction with embodiment, the utility model transformer substation security sniffer is further described:
Embodiment 1:
A kind of transformer substation security sniffer, comprises Fresnel Lenses, infrared sensor, current-to-voltage converter, voltage amplifier, signal processor and audible-visual annunciator; Wherein, described Fresnel Lenses is positioned at the dead ahead of infrared sensor, the output terminal of described infrared sensor is connected with the input end of current-to-voltage converter, the output terminal of voltage to current converter is connected with the input end of voltage amplifier, the output terminal of voltage amplifier is connected with the input end of signal processor, and the output terminal of signal processor is connected with the output terminal of audible-visual annunciator.
Described infrared sensor adopts rpyroelectric infrared components and parts.
Described signal processor comprises frequency analyzer and decision circuit, and frequency analyzer is connected with decision circuit.
Described rpyroelectric infrared components and parts adopt the pyroelectricity components and parts comprising two mutual serial or parallel connections.
According to the change of extraneous infrared energy, the utility model transformer substation security sniffer has mainly judged whether that people is moving.Infrared energy and the environment of human body have difference, when people is by search coverage, and the change in location of this different infrared energy that alarm is collected, and then send warning by analysis.Human body has constant body temperature, generally at about 37 degree, can send the infrared ray of specific wavelength 10 microns, and the utility model transformer substation security sniffer carries out work by detecting the infrared ray of 10 microns of human-body emitting.
The infrared ray of 10 microns of human-body emitting is by gathering on the induction source of infrared sensor after the optical filter enhancing of Fresnel Lenses, the induction source of infrared sensor adopts pyroelectricity components and parts, this pyroelectricity components and parts will lose charge balance when receiving human infrared radiation temperature and changing, outside release electric charge, the detection signal representing human body existence or movement just can be produced after subsequent conditioning circuit processes after testing, then produce alerting signal when this detection signal reaches alarming threshold value, reported to the police by audible-visual annunciator.
Described pyroelectricity components and parts are widely used in detecting the infrared ray from human body radiation, and the pyroelectricity components and parts group for each monitored area exports the electric current corresponding with infrared radiation.So in pyroscan, current-to-voltage converter changes voltage into ER effect, and voltage amplifier then amplifies voltage.
Described frequency analyzer carries out frequency analysis to the output signal of voltage amplifier; Decision circuit forms the waveform detecting and produced by human body based on the frequency obtained by frequency analyzer, and only has the detection signal just exporting when the waveform produced by human body being detected by wave form analysis and represent human body existence or movement in monitored area.
In sum: the utility model transformer substation security sniffer is designed to the frequecy characteristic with human motion, and it there is its emission band center greatly about the feature of bandpass filter at 1 hertz of place.So, enhance the susceptibility to human body, and the misoperation caused by the signal of the frequency had nothing to do with human motion is prevented, and the voltage signal after the amplification of the utility model transformer substation security sniffer is through sampling and converting frequency-region signal to, by analyzing the larger radio-frequency component of amplitude, if reach alarming threshold value namely to report to the police, it compared with prior art to have more accurately, stronger detection and anti-interference, anti-wrong report ability.
Claims (4)
1. a transformer substation security sniffer, is characterized in that: comprise Fresnel Lenses, infrared sensor, current-to-voltage converter, voltage amplifier, signal processor and audible-visual annunciator; Wherein, described Fresnel Lenses is positioned at the dead ahead of infrared sensor, the output terminal of described infrared sensor is connected with the input end of current-to-voltage converter, the output terminal of voltage to current converter is connected with the input end of voltage amplifier, the output terminal of voltage amplifier is connected with the input end of signal processor, and the output terminal of signal processor is connected with the output terminal of audible-visual annunciator.
2. transformer substation security sniffer as claimed in claim 1, is characterized in that: described infrared sensor adopts rpyroelectric infrared components and parts.
3. transformer substation security sniffer as claimed in claim 1, is characterized in that: described signal processor comprises frequency analyzer and decision circuit, and frequency analyzer is connected with decision circuit.
4. transformer substation security sniffer as claimed in claim 2, is characterized in that: described rpyroelectric infrared components and parts adopt the pyroelectricity components and parts comprising two mutual serial or parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345238.3U CN204066305U (en) | 2014-06-26 | 2014-06-26 | Transformer substation security sniffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345238.3U CN204066305U (en) | 2014-06-26 | 2014-06-26 | Transformer substation security sniffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204066305U true CN204066305U (en) | 2014-12-31 |
Family
ID=52207765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345238.3U Expired - Fee Related CN204066305U (en) | 2014-06-26 | 2014-06-26 | Transformer substation security sniffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204066305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021641A (en) * | 2014-06-26 | 2014-09-03 | 范黎明 | Security detection device of transformer substation |
-
2014
- 2014-06-26 CN CN201420345238.3U patent/CN204066305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021641A (en) * | 2014-06-26 | 2014-09-03 | 范黎明 | Security detection device of transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |