CN201226172Y - Multifunctional active infrared inbreak detector - Google Patents
Multifunctional active infrared inbreak detector Download PDFInfo
- Publication number
- CN201226172Y CN201226172Y CNU2008200585693U CN200820058569U CN201226172Y CN 201226172 Y CN201226172 Y CN 201226172Y CN U2008200585693 U CNU2008200585693 U CN U2008200585693U CN 200820058569 U CN200820058569 U CN 200820058569U CN 201226172 Y CN201226172 Y CN 201226172Y
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Abstract
The utility model relates to a multifunctional active infrared intrusion detector, comprising an infrared transmitter and an infrared receiver. The infrared receiver comprises a second optical focusing system, a photodiode, a preamplifier circuit, a signal filtering, amplifying and shaping circuit, a single chip microprocessor and a first relay driving circuit which are connected in sequence; and the single chip microprocessor is also provided with an output port and connected with a second relay driving circuit and a relay output circuit in sequence. When in use, the two output ports of the relay output circuit of the detector are respectively and externally connected with an alarming light system and a alarm system so as to form a security protecting system with the functions of alarming light and alarm linked alarming. Therefore, the structure of the system is further simplified, the assembling is convenient, the components and the circuits are simplified, the work of the security protecting system is more stable and more perfect, and the cost is also reduced.
Description
Technical field
The utility model relates to a kind of safety device, relates in particular to a kind of infrared intrusion detector.
Background technology
Active infrared intrsion detector is made up of active infrared transmitter Tx and active infrared receiver Rx, when the infrared beam between transmitter Tx and the receiver interdicted fully or during by the blocking of given number percent receiver Rx produce alarm condition, this alarm condition is transferred to the rear end alarm host machine and sends corresponding alert news.
The theory diagram of active infrared intrsion detector transmitter with reference to the accompanying drawings 1.Active infrared transmitter Tx adopts infrarede emitting diode to make light source (PIR) usually, and the infrared light wavelength that sends of this diode directly drives with integrated circuit at 850-960nm.Active infrared transmitter Tx is made up of low-frequency pulse producer, voice carrier generator, infrared emission output stage, infrared transmitting tube (PIR), optical focusing system.Low-frequency pulse producer produces a low-frequency pulse square wave, and the audio oscillation ripple that carrier generator produces is modulated, and makes it to produce corresponding modulating wave and drives the infrared emission output stage then and send infrared beam.This infrared beam is the very high infrared beam of pulse modulated, dutycycle, therefore can reduce the transmitter power consumption, strengthens antijamming capability.
The principle of work block diagram of active infrared intrsion detector receiver with reference to the accompanying drawings 2.Photoelectric sensor among the active infrared receiver Rx adopts photodiode.Active infrared receiver Rx is by optical focusing system, prime amplifier, signal filtering, amplification, shaping circuit, and single-chip microcomputer and relay drive circuit constitute.Optical focusing system focuses on the infrared light that active infrared transmitter Tx sends on the photodiode, amplify through prime amplifier, signal filtering, amplification, shaping circuit will filter undesired signal, to modulation signal further amplify, shaping exports to single-chip microcomputer, sample, digital filtering, demodulation, solve useful signal by pre-defined algorithm and judge, according to software by single-chip microcomputer by single-chip microcomputer output port I/O
1Provide control signal; In case the emission light beam is interdicted, active infrared receiver Rx can't receive modulation signal, and single-chip microcomputer carries out computing, judges by output port I/O
1The output alarm control signal makes the actuating of relay to relay drive circuit, and output break alarm signal is given the rear end alarm host machine, sends corresponding alert news by main control system.
Active infrared intrsion detector in the past has only the output of alerting signal; but active infrared intrsion detector is in the application of reality; usually also need active infrared intrsion detector when taking place to report to the police; other auxiliary devices such as the on-the-spot houselights equipment of linkage camera, siren, active infrared intrsion detector so in the past just can not satisfy this demand.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of when take place reporting to the police, and auxiliary devices such as on-the-spot houselights equipment of video camera and siren in the safety-protection system that can link simultaneously, reaches the multi-functional active infrared intrsion detector of multi-faceted warning.
In order to solve the problems of the technologies described above multi-functional active infrared intrsion detector of the present utility model, comprise infrared transmitter and infrared receiving set, this infrared receiving set comprises second optical focusing system that is linked in sequence, photodiode, pre-amplification circuit, signal filtering, amplify, shaping circuit, the single-chip microcomputer and first relay drive circuit, single-chip microcomputer is by sampling to input signal, filtering, demodulation is also calculated contrast back output control signal and is given first relay drive circuit, described single-chip microcomputer also is provided with an output port, and be linked in sequence second relay drive circuit and relay output circuit, single-chip microcomputer is through calculating the contrast back to second relay drive circuit output delay control signal.
Described relay output circuit is provided with two output ports, and one as alarm lamp photosystem control signal output ends mouth, and one as warning siren system control signal output port.
Described infrared transmitter comprises low-frequency pulse producer, voice carrier generator, infrared emission output stage, infrarede emitting diode and first optical focusing system that is linked in sequence.
During multi-functional active infrared intrsion detector of the present utility model uses, two output ports at described relay output circuit, be external to alarm lamp photosystem and siren warning system respectively, just can form have warning light, the safety-protection system of siren interlink warning function.
During work when receiver connects the modulation signal that Rx receives that transmitter Tx sends, by pre-amplification circuit signal is amplified, signal filtering, amplification, shaping circuit will filter undesired signal, to modulation signal further amplify, shaping exports to single-chip microcomputer, software by single-chip microcomputer is sampled, digital filtering, demodulation, solve useful signal by pre-defined algorithm and judge the normal state of alert or alarm condition, by single-chip microcomputer output port I/O
1Provide control signal, export to first relay drive circuit, do not interdicted as if light beam, then single-chip microcomputer output port I/O
1Provide warning control signal level, making the normally closed relay signal output state of receiver constant is the output of alarm free signal; At this moment, single-chip microcomputer output port I/O
2Export to second relay drive circuit according to predefined software control procedure alarm free control level, thereby, the relay normally open contact of relay output circuit keeps open-circuit condition, be alarm free light, the output of siren interlock control signal, external lighting fixture can not lighted, and siren can not rung.When in a single day receiver Rx did not receive the signal that transmitter Tx sends, promptly light beam was interdicted when alert takes place, and active infrared receiver Rx can't receive modulation signal, and single-chip microcomputer carries out computing, judges by output port I/O
1The output alarm control signal makes the actuating of relay for first relay drive circuit, and output break alarm signal is given the rear end alarm host machine, sends corresponding alert news by main control system.Simultaneously, single-chip microcomputer output port I/O
2Give second relay drive circuit according to predefined software control procedure output alarm control level, and this port according to software program delay time T (from 0-several minutes adjustable) in keep the output control level, thereby, the relay normally open contact closure of relay output circuit, provide switching value interlock control signal, make external equipment connect the alarm lamp photosystem and light illuminating lamp, connect the siren warning system simultaneously, siren is rung.At this moment because the time-delay control action of single-chip microcomputer, through delay time T (from 0-several minutes adjustable) after, single-chip microcomputer output terminal I/O
2Stop the output alarm control level and give second relay drive circuit, the relay normally open contact of relay output circuit is disconnected, close houselights device and siren.In delay time T, no matter whether receiver Rx alert news takes place once more, does not change the output state of alarm linkage signal, finishes until delay time T.
Make the structure of system further obtain simplifying like this, as long as infrared intrusion detector directly is external to relevant device, add complicated optional equipment or circuit in the middle of not needing, made things convenient for safety-protection system assembling, simplified assembly and circuit, make that also the work of safety-protection system is more stable.The function of the circumference safety alarm system of the feasible auxiliary device that need link of this detector is further perfect, and cost also descends to some extent.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 infrared transmitter structural representation;
Fig. 2 infrared receiving set structural representation;
The structural representation of the multi-functional active infrared intrsion detector receiver section of Fig. 3 the utility model.Among the figure: Tx. infrared transmitter Rx. infrared receiving set
11. low-frequency pulse producer 12. voice carrier generators 13. infrared emission output stages
14. infrarede emitting diode 15. first optical focusing systems
21. second optical focusing system, 22. photodiodes, 23. pre-amplification circuits
24. signal filtering, amplification, shaping circuit 25. single-chip microcomputers 26. first relay drive circuits
27. siren warning system 28. second relay drive circuits 29. relay output circuits
30. alarm lamp photosystem
Embodiment
As shown in Figure 3, multi-functional active infrared intrsion detector comprises infrared transmitter Tx and infrared receiving set Rx,
This infrared transmitter comprises low-frequency pulse producer 11, voice carrier generator 12, infrared emission output stage 13, infrarede emitting diode 14 and first optical focusing system 15 that is linked in sequence.
This infrared receiving set Rx comprises second optical focusing system 21, photodiode 22, pre-amplification circuit 23, signal filtering, amplification, shaping circuit 24, single-chip microcomputer 25 and first relay drive circuit 26 that is linked in sequence, the I/O of described single-chip microcomputer 25
1Output port connects first relay drive circuit 26, and this single-chip microcomputer 25 also is provided with another output port I/O
2And second relay drive circuit 28 and relay output circuit 29 have been linked in sequence, this relay output circuit 29 is provided with two output ports, one as alarm lamp optical relay control signal output ends mouth, be external to alarm lamp photosystem 30, one as warning siren relay control signal output port, is external to siren warning system 27; Thereby form safety-protection system with warning light, siren interlink warning function.
During work when receiver connects the modulation signal that Rx receives that transmitter Tx sends, by pre-amplification circuit 23 signal is amplified, signal filtering, amplification, shaping circuit 24 will filter undesired signal, to modulation signal further amplify, shaping exports to single-chip microcomputer 25, by single-chip microcomputer 25 software sample, digital filtering, demodulation, solve useful signal by pre-defined algorithm and judge the normal state of alert or alarm condition, by single-chip microcomputer 25 output port I/O
1Provide control signal, export to first relay drive circuit 26, do not interdicted as if light beam, then single-chip microcomputer 25 output port I/O
1Provide warning control signal level, making the normally closed relay signal output state of receiver constant is the output of alarm free signal; At this moment, single-chip microcomputer 25 output port I/O
2Export to second relay drive circuit 28 according to predefined software control procedure alarm free control level, thereby, the relay normally open contact of relay output circuit 29 keeps open-circuit condition, be alarm free light, the output of siren interlock control signal, external lighting fixture can not lighted, and siren can not rung.When in a single day receiver Rx did not receive the signal that transmitter Tx sends, promptly light beam was interdicted when alert takes place, and active infrared receiver Rx can't receive modulation signal, and single-chip microcomputer 25 carries out computing, judges by output port I/O
1The output alarm control signal makes the actuating of relay for first relay drive circuit 26, and output break alarm signal is given the rear end alarm host machine, sends corresponding alert news by main control system.Simultaneously, single-chip microcomputer 25 output port I/O
2Give second relay drive circuit 28 according to predefined software control procedure output alarm control level, and this port according to software program delay time T (from 0-several minutes adjustable) in keep the output control level, thereby, the relay normally open contact closure of relay output circuit 29, provide switching value interlock control signal, make external equipment connect alarm lamp photosystem 30 and light illuminating lamp, connect siren warning system 27 simultaneously, siren is rung.At this moment because the time-delay control action of single-chip microcomputer 25, through delay time T (from 0-several minutes adjustable) after, single-chip microcomputer 25 output port I/O
2Stop the output alarm control level and give second relay drive circuit 28, the relay normally open contact of relay output circuit 29 is disconnected, close houselights device and siren.In delay time T, no matter whether receiver Rx alert news takes place once more, does not change the output state of alarm linkage signal, finishes until delay time T.
Claims (3)
1. multi-functional active infrared intrsion detector, comprise infrared transmitter and infrared receiving set, this infrared receiving set comprises second optical focusing system that is linked in sequence, photodiode, pre-amplification circuit, signal filtering, amplify, shaping circuit, the single-chip microcomputer and first relay drive circuit, single-chip microcomputer is by sampling to input signal, filtering, demodulation is also calculated contrast back output control signal and is given first relay drive circuit, it is characterized in that: described single-chip microcomputer also is provided with an output port, and be linked in sequence second relay drive circuit and relay output circuit, single-chip microcomputer is through calculating the contrast back to second relay drive circuit output delay control signal.
2. multi-functional active infrared intrsion detector according to claim 1, it is characterized in that: described relay output circuit is provided with two output ports, one as alarm lamp photosystem control signal output ends mouth, and one as warning siren system control signal output port.
3. multi-functional active infrared intrsion detector according to claim 1 and 2 is characterized in that: described infrared transmitter comprises low-frequency pulse producer, voice carrier generator, infrared emission output stage, infrarede emitting diode and first optical focusing system that is linked in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200585693U CN201226172Y (en) | 2008-05-16 | 2008-05-16 | Multifunctional active infrared inbreak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200585693U CN201226172Y (en) | 2008-05-16 | 2008-05-16 | Multifunctional active infrared inbreak detector |
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| Publication Number | Publication Date |
|---|---|
| CN201226172Y true CN201226172Y (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200585693U Expired - Fee Related CN201226172Y (en) | 2008-05-16 | 2008-05-16 | Multifunctional active infrared inbreak detector |
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| CN (1) | CN201226172Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509406A (en) * | 2011-11-04 | 2012-06-20 | 河南省电力公司安阳供电公司 | Image storage type anti-theft device for rural power equipment |
| CN103646486A (en) * | 2013-12-20 | 2014-03-19 | 郑立猛 | Infrared correlation technology based intrusion detection device |
-
2008
- 2008-05-16 CN CNU2008200585693U patent/CN201226172Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509406A (en) * | 2011-11-04 | 2012-06-20 | 河南省电力公司安阳供电公司 | Image storage type anti-theft device for rural power equipment |
| CN103646486A (en) * | 2013-12-20 | 2014-03-19 | 郑立猛 | Infrared correlation technology based intrusion detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090422 Termination date: 20140516 |