CN201203921Y - Multifunctional active infrared inbreak detector - Google Patents
Multifunctional active infrared inbreak detector Download PDFInfo
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- CN201203921Y CN201203921Y CNU2008200580825U CN200820058082U CN201203921Y CN 201203921 Y CN201203921 Y CN 201203921Y CN U2008200580825 U CNU2008200580825 U CN U2008200580825U CN 200820058082 U CN200820058082 U CN 200820058082U CN 201203921 Y CN201203921 Y CN 201203921Y
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Abstract
The utility model relates to a multifunctional active infrared incursion detector, including an infrared transmitter and an infrared receiver. The infrared receiver includes a second optical focusing system, a photoelectric diode, a pre-amplifier circuit, a pulse code demodulator, a signal amplification and output stage, a first relay drive circuit, which are connected in sequence, wherein the signal amplification and output stage being also provided with an output port, and being connected in sequence with a delay control circuit, a second relay drive circuit and a relay output circuit. When using, the two output ports of the detector relay output circuit are externally connected to an alarm lighting system and an alarm whistle alarm system, thus a safety protection system with alarm lamplight and alarm whistle ganged alarm function is composed. Further, the system structure is simplified, assemblage is convenient, components and lines are simpler, and the operation of the safety protection system is more stable and perfect, 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 this diode sends 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 made of second optical focusing system, prime amplifier, pulse-code demodulator, signal amplification and defeated level and relay drive circuit.Second optical focusing system focuses on the infrared light that active infrared transmitter Tx sends on the photodiode, amplify through prime amplifier, pulse-code demodulator will be through the signal demodulation of ovennodulation, in case the emission light beam is interdicted, active infrared receiver Rx can't receive modulation signal, the signal that makes pulse-code demodulator demodulate changes, this signal is exported to relay drive circuit through the amplification of signal amplification output stage and is made the actuating of relay, 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, perhaps will just can finish above-mentioned functions by the external equipment of complexity.
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, photodiode, pre-amplification circuit, pulse-code demodulator, signal amplification and output stage and first relay drive circuit that is linked in sequence, described signal amplifies and output stage also is provided with an output port, and the delay control circuit that has been linked in sequence, second relay drive circuit and relay output circuit.
Described relay output circuit is provided with two output ports, and one as alarm lamp optical circuit control signal output ends mouth, and one as warning siren circuit 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 active infrared intrsion detector of the present utility model used, two output ports of described relay output circuit were 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, pulse-code demodulator reduces the signal demodulation, amplify output stage by signal and further amplify, be shaped to level controling signal, export to first relay drive circuit, making the normally closed relay signal output state of receiver constant is the output of alarm free signal; At this moment, signal amplifies the level controling signal of output stage output and also exports to delay control circuit simultaneously, delay control circuit does not have control level output, second relay drive circuit does not have drive signal output yet, thereby the relay normally open contact of relay output circuit keeps open-circuit condition, i.e. alarm free control signal output, external lighting fixture can not lighted, and siren can not rung.When in a single day receiver Rx does not receive the signal that transmitter Tx sends, be that light beam is interdicted when alert takes place, signal amplifies and the output of output stage dead level, first relay drive circuit drives the actuating of relay, be that receiver normally closed relay signal output state changes, output normally closed switch amount alerting signal; Simultaneously, because signal amplifies and the variation of output stage control level, delay control circuit is triggered, the output control level is given second relay drive circuit, second relay drive circuit and then output drive signal make the relay normally open contact closure of relay output circuit, provide switching value interlock control signal, make external equipment turn-on lamp optical circuit light illuminating lamp, connect the siren control circuit simultaneously, siren is rung.At this moment, because the time-lag action of delay control circuit, through delay time T (from 0-several minutes adjustable) after, delay control circuit is no longer exported control level and is given second relay drive circuit, the relay normally open contact of relay output circuit is disconnected, close houselights device and siren.In delay time, 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 safety-protection 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 utility model, 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. pulse-code demodulator 25. signals amplify and output stage 26. first relay drive circuits
27. delay control circuit 28. second relay drive circuits 29. relay output circuits
30. alarm lamp photosystem 31. siren warning systems
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 that is linked in sequence, photodiode 22, pre-amplification circuit 23, pulse-code demodulator 24, signal amplifies and the output stage 25 and first relay drive circuit 26, described signal amplifies and output stage 25 also is provided with an output port, and delay control circuit 27 has been linked in sequence, second relay drive circuit 28 and relay output circuit 29, 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 the alarm lamp photosystem, one as warning siren relay control signal output port, is external to the siren warning system; Thereby form safety-protection system with warning light, siren interlink warning function.
During work when receiver Rx receives the modulation signal that transmitter Tx sends, by pre-amplification circuit 23 signal is amplified, pulse-code demodulator 24 reduces the signal demodulation, amplify output stage 25 by signal and further amplify, be shaped to level controling signal, export to first relay drive circuit 26, making the normally closed relay signal output state of receiver constant is the output of alarm free signal; At this moment, signal amplifies the level controling signal of output stage 25 outputs and also exports to delay control circuit 27 simultaneously, delay control circuit 27 no control level outputs, second relay drive circuit 28 does not have drive signal output yet, thereby the relay normally open contact of relay output circuit 29 keeps open-circuit condition, i.e. alarm free control signal output, external lighting fixture can not lighted, and siren can not rung.When in a single day receiver Rx does not receive the signal that transmitter Tx sends, be that light beam is interdicted when alert takes place, signal amplifies and the output of output stage 25 dead levels, first relay drive circuit 26 drives the actuating of relay, be that receiver normally closed relay signal output state changes, output normally closed switch amount alerting signal; Simultaneously, because signal amplifies and the variation of output stage 25 control levels, delay control circuit 27 is triggered, the output control level is given second relay drive circuit 28, second relay drive circuit 28 and then output drive signal make the relay normally open contact closure of relay output circuit 29, provide switching value interlock control signal, make external equipment turn-on lamp optical circuit light illuminating lamp, connect the siren control circuit simultaneously, siren is rung.At this moment, because the time-lag action of delay control circuit 27, through delay time T (from 0-several minutes adjustable) after, delay control circuit 27 is no longer exported control level and is given 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, 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, photodiode, pre-amplification circuit, pulse-code demodulator, signal amplification and output stage and first relay drive circuit that is linked in sequence, it is characterized in that: described signal amplifies and output stage also is provided with an output port, and the delay control circuit that has been linked in sequence, second relay drive circuit and relay output circuit.
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 optical circuit control signal output ends mouth, and one as warning siren circuit 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 |
|---|---|---|---|
| CNU2008200580825U CN201203921Y (en) | 2008-05-06 | 2008-05-06 | Multifunctional active infrared inbreak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200580825U CN201203921Y (en) | 2008-05-06 | 2008-05-06 | Multifunctional active infrared inbreak detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203921Y true CN201203921Y (en) | 2009-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200580825U Expired - Fee Related CN201203921Y (en) | 2008-05-06 | 2008-05-06 | Multifunctional active infrared inbreak detector |
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| CN (1) | CN201203921Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112742A (en) * | 2021-04-06 | 2021-07-13 | 河北金锁安防工程股份有限公司 | Anti-theft alarm system |
-
2008
- 2008-05-06 CN CNU2008200580825U patent/CN201203921Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112742A (en) * | 2021-04-06 | 2021-07-13 | 河北金锁安防工程股份有限公司 | Anti-theft alarm system |
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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: 20090304 Termination date: 20140506 |