CN202748896U - Low-cost infrared detection anti-theft alarm - Google Patents
Low-cost infrared detection anti-theft alarm Download PDFInfo
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- CN202748896U CN202748896U CN 201220262760 CN201220262760U CN202748896U CN 202748896 U CN202748896 U CN 202748896U CN 201220262760 CN201220262760 CN 201220262760 CN 201220262760 U CN201220262760 U CN 201220262760U CN 202748896 U CN202748896 U CN 202748896U
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Abstract
The utility model discloses a low-cost infrared detection anti-theft alarm. The alarm comprises an infrared sensing circuit, a signal amplification circuit, a voltage comparison circuit, a time-delay circuit and an audio alarm circuit. A signal output end of the infrared sensing circuit is connected with a signal input end of the signal amplification circuit; a signal output end of the signal amplification circuit is connected with a positive pole signal input end of the voltage comparison circuit; a signal output of the voltage comparison circuit is connected with a signal input end of the time-delay circuit; and a signal output end of the time-delay circuit is connected with a signal input end of the audio alarm circuit. The low-cost infrared detection anti-theft alarm of the utility model is advantageous in simple structure, low cost, sensitive reaction, favorable anti-theft effect, suitability for general household use and easiness in popularization.
Description
Technical field
The utility model relates to a kind of burglar alarm, relates in particular to a kind of cheaply infra-red detection burglar alarm.
Background technology
Usually our anti-theft alarming equipment that adopts is varied, but the burglar alarm that average family uses is not a lot, or has sensitive not to human body sensing in the higher problem of rate of false alarm, or product structure complexity, price are high, are difficult to popularize.
Summary of the invention
The purpose of this utility model provides a kind of cheaply infra-red detection burglar alarm with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises infrared ray sensing circuit, signal amplification circuit, voltage comparator circuit, delay circuit and audible alarm circuit, the signal output part of described infrared ray sensing circuit is connected with the signal input part of described signal amplification circuit, the signal output part of described signal amplification circuit is connected with the positive signal input end of described voltage comparator circuit, the signal output part of described voltage comparator circuit is connected with the signal input part of described delay circuit, and the signal output part of described delay circuit is connected with the signal input part of described acoustic alarm.
Described infrared ray sensing circuit comprises infrared ray sensor, the first resistance and the first electric capacity, the electrode input end of described infrared ray sensor is connected with positive source, the negative input of described infrared ray sensor is connected with described power cathode, the signal output part of described infrared ray sensor simultaneously with the first end of described the first resistance be connected the first end of the first electric capacity and be connected, the second end of described the first resistance is connected with described power cathode, and the second end of described the first electric capacity is connected with the signal input part of described signal amplification circuit.
Described signal amplification circuit comprises the first triode, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, the base stage of described the first triode simultaneously with the second end of described the first electric capacity be connected the first end of the second resistance and be connected, the second end while of described the second resistance and the collector of described the first triode, the first end of described the 3rd resistance be connected the first end of the second electric capacity and connect, the second end of described the second electric capacity is connected with the first end of described the 4th resistance, the first end of described the 5th resistance is connected with the first end of described the 6th resistance, the first end of described the 7th resistance is connected with the first end of described the 3rd electric capacity, the second end of described the 7th resistance simultaneously with the first end of described the 8th resistance be connected the first end of the 4th electric capacity and be connected, the second end of described the 8th resistance be connected the second end of the 4th electric capacity and connect, the second end of described the 3rd resistance be connected the second end of the 5th resistance and all be connected with described positive source, the second end of described the 6th resistance, the second end of described the 3rd electric capacity be connected the emitter of the first triode and all be connected the second end of described the 4th resistance with described power cathode, the second end of described the 8th resistance be connected the second end of the 4th electric capacity and all be connected with the signal input part of described voltage comparator circuit.
Described voltage comparator circuit comprises operational amplifier, voltage comparator, the 5th electric capacity, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 13 resistance, the first diode and the second diode, the positive signal input end of described operational amplifier is connected with the second end of described the 7th resistance, the negative signal input end of described operational amplifier is connected with the second end of described the 4th resistance, the signal output part of described operational amplifier simultaneously with the second end of described the 8th resistance be connected the first end of the 5th electric capacity and be connected, the second end of described the 5th electric capacity simultaneously with the first end of described the 9th resistance be connected the negative signal input end of low pressure comparer and be connected, the first end of described the tenth resistance simultaneously with the first end of described the 11 resistance be connected the positive pole of the first diode and be connected, the second end of described the 11 resistance simultaneously with the positive signal input end of described voltage comparator be connected the first end of the 12 resistance and be connected, the signal output part of described voltage comparator simultaneously with the first end of described the 13 resistance be connected the negative pole of the second diode and be connected, the second end of described the 13 resistance, the second end of described the tenth resistance, the positive source input end of described operational amplifier be connected the power cathode input end of voltage comparator and all be connected with described positive source, the power cathode input end of described operational amplifier, the second end of described the 9th resistance, the negative pole of described the first diode, the second end of described the 12 resistance be connected the positive source input end of voltage comparator and all be connected with described power cathode, the positive pole of described the second diode is connected with the signal input part of described delay circuit, and described the 12 resistance is variable resistor.
Described delay circuit comprises the 6th electric capacity, the 7th electric capacity, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, warning delay controller and the second triode, the first end while of described the 6th electric capacity and the positive pole of described the second diode, the first end of the 14 resistance be connected the negative signal input end of warning delay controller and connect, the first end of described the 15 resistance simultaneously with the first end of described the 16 resistance be connected the positive signal input end of warning delay controller and be connected, the signal output part while of described warning delay controller and the first end of described the 17 resistance, the first end of described the 7th electric capacity, the first end of described the 18 resistance connects, the first end of described the 18 resistance is connected with the base stage of described the second triode, the second end of described the 6th electric capacity, the second end of described the 16 resistance, the positive source input end of described warning delay controller be connected the emitter of the second triode and all be connected with described power cathode, the second end of described the 14 resistance, the second end of described the 15 resistance, the negative power supply input end of described warning delay controller, the second end of described the 17 resistance be connected the even described positive source of the second end of the 7th electric capacity and connect, the signal output part of described warning delay controller is connected with the signal input part of described acoustic alarm circuit.
Described acoustic alarm circuit comprises the 19 resistance, the 20 resistance, the 3rd diode, the 4th diode, the 3rd triode, the 8th electric capacity and loudspeaker, the first end of described the 19 resistance is connected with the signal output part of described warning delay controller, the second end of described the 19 resistance is connected with the positive pole of described the 3rd diode, the negative pole of described the 3rd diode is connected with the collector of described the 3rd triode, the base stage of described the 3rd triode is connected with the first end of described the 20 resistance, the second end of described the 20 resistance simultaneously with the first end of described the 8th electric capacity be connected the negative pole of the 4th diode and be connected, the second end of described the 8th electric capacity simultaneously with described positive source be connected the first end of loudspeaker and be connected, the second end of described loudspeaker is connected with the collector of described the second triode, the emitter of described the 3rd triode be connected the anodal of the 4th diode and be connected with described power cathode simultaneously.
The beneficial effects of the utility model are:
The utility model is simple in structure, with low cost, be quick on the draw, good anti-theft effect, is fit to general family and uses, and is convenient to popularize.
Description of drawings
Accompanying drawing 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in drawings: the utility model comprises infrared ray sensing circuit, signal amplification circuit, voltage comparator circuit, delay circuit and audible alarm circuit, the signal output part of described infrared ray sensing circuit is connected with the signal input part of described signal amplification circuit, the signal output part of described signal amplification circuit is connected with the positive signal input end of described voltage comparator circuit, the signal output part of described voltage comparator circuit is connected with the signal input part of described delay circuit, and the signal output part of described delay circuit is connected with the signal input part of described acoustic alarm.
As shown in drawings: the infrared ray sensing circuit comprises infrared sensor IC 1, the first resistance R 1 and the first capacitor C 1, the electrode input end of infrared sensor IC 1 is connected with positive source, the negative input of infrared sensor IC 1 is connected with power cathode, the signal output part of infrared sensor IC 1 simultaneously with the first end of the first resistance R 1 be connected the first end of capacitor C 1 and be connected, the second end of the first resistance R 1 is connected with power cathode.
As shown in drawings: signal amplification circuit comprises the first triode VT1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C 4, the base stage of the first triode VT1 simultaneously with the second end of the first capacitor C 1 be connected the first end of resistance R 2 and be connected, the second end while of the second resistance R 2 and the collector of the first triode VT1, the first end of the 3rd resistance R 3 be connected the first end of capacitor C 2 and connect, the second end of the second capacitor C 2 is connected with the first end of the 4th resistance R 4, the first end of the 5th resistance R 5 is connected with the first end of the 6th resistance R 6, the first end of the 7th resistance R 7 is connected with the first end of the 3rd capacitor C 3, the second end of the 7th resistance R 7 is connected with the first end of the 8th resistance R 8 and the first end of the 4th capacitor C 4 simultaneously, the second end of the second end of the 8th resistance R 8 and the 4th capacitor C 4 connects, the second end of the 3rd resistance R 3 all is connected with positive source with the second end of the 5th resistance R 5, the second end of the 6th resistance R 6, the second end of the 3rd capacitor C 3 be connected the emitter of triode VT1 and all be connected with power cathode, the second end of the 4th resistance R 4 is connected with the second end of the 8th resistance R 8 and the second end of the 4th capacitor C 4 simultaneously.
As shown in drawings: voltage comparator circuit comprises operational amplifier IC2, voltage comparator ic 3, the 5th capacitor C 5, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the first diode VD1 and the second diode VD2, the positive signal input end of operational amplifier IC2 is connected with the second end of the 7th resistance R 7, the negative signal input end of operational amplifier IC2 is connected with the second end of the 4th resistance R 4, the signal output part of operational amplifier IC2 is connected with the second end of the 8th resistance R 8 and the first end of the 5th capacitor C 5 simultaneously, the second end of the 5th capacitor C 5 is connected with the negative signal input end that the first end of the 9th resistance R 9 is connected with voltage comparator ic simultaneously, the first end of the tenth resistance R 10 simultaneously with the first end of the 11 resistance R 11 be connected the positive pole of diode VD1 and be connected, the second end of the 11 resistance R 11 is connected with the positive signal input end of voltage comparator ic 3 and the first end of the 12 resistance R 12 simultaneously, the signal output part of voltage comparator ic 3 simultaneously with the first end of the 13 resistance R 13 be connected the negative pole of diode VD2 and be connected, the second end of the 13 resistance R 13, the second end of the tenth resistance R 10, the power cathode input end that the positive source input end of operational amplifier IC2 is connected with voltage comparator ic all is connected with positive source, the power cathode input end of operational amplifier IC2, the second end of the 9th resistance R 9, the negative pole of the first diode VD1, the positive source input end that the second end of the 12 resistance R 12 is connected with voltage comparator ic all is connected with power cathode, and the 12 resistance R 12 is variable resistor.
As shown in drawings: delay circuit comprises the 6th capacitor C 6, the 7th capacitor C 7, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, warning delay controller IC4 and the second triode VT2, the first end while of the 6th capacitor C 6 and the positive pole of the second diode VD2, the first end of the 14 resistance R 14 is connected the negative signal input end and is connected with warning delay controller IC4, the first end of the 15 resistance R 15 simultaneously and the first end of the 16 resistance R 16 be connected the positive signal input end with warning delay controller IC4 and be connected, the signal output part while of warning delay controller IC4 and the first end of the 17 resistance R 17, the first end of the 7th capacitor C 7, the first end of the 18 resistance R 18 connects, the first end of the 18 resistance R 18 is connected with the base stage of the second triode VT2, the second end of the 6th capacitor C 6, the second end of the 16 resistance R 16, the positive source input end of warning delay controller IC4 be connected the emitter of triode VT2 and all be connected the second end of the 14 resistance R 14 with power cathode, the second end of the 15 resistance R 15, the negative power supply input end of warning delay controller IC4, the second end of the 17 resistance R 17 connects with the even positive source of the second end of the 7th capacitor C 7.
As shown in drawings: the acoustic alarm circuit comprises the 19 resistance R 19, the 20 resistance R 20, the 3rd diode VD3, the 4th diode VD4, the 3rd triode VT3, the 8th capacitor C 8 and loudspeaker BL, the first end of the 19 resistance R 19 is connected with the signal output part of warning delay controller IC4, the second end of the 19 resistance R 19 is connected with the positive pole of the 3rd diode VD3, the negative pole of the 3rd diode VD3 is connected with the collector of the 3rd triode VT3, the base stage of the 3rd triode VT3 is connected with the first end of the 20 resistance R 20, the second end of the 20 resistance R 20 is connected with the first end of the 8th capacitor C 8 and the negative pole of the 4th diode VD4 simultaneously, the second end of the 8th capacitor C 8 simultaneously and positive source be connected first end with loudspeaker BL and be connected, the second end of loudspeaker BL is connected with the collector of the second triode VT2, and the anodal of the emitter of the 3rd triode VT3 and the 4th diode VD4 is connected with power cathode simultaneously.
As shown in drawings: when infra-red detection sensor IC1 detects the infrared signal that the place ahead human body radiation goes out, the faint electric signal of signal output part output by IC1, amplify through the first triode VT1, be input to by the second capacitor C 2 and carry out high-gain, low noise amplification among the operational amplifier IC2, this moment is enough strong by the signal of the signal output part output of operational amplifier IC2.The positive signal input end of voltage comparator ic 3 provides reference voltage by the tenth resistance R 10 and the first diode VD1, when the signal voltage of operational amplifier IC2 signal output part output reaches the negative signal input end of voltage comparator ic 3, the voltage of two input ends compares, and this moment, the signal output part of voltage comparator ic 3 became low level by original high level.Warning delay controller IC4 is warning and delaying circuit, and the 14 resistance R 14 and the 6th capacitor C 6 form delay circuit, and its time is about 1 minute.When the signal output part of voltage comparator ic 3 becomes low level, the 6th capacitor C 6 is by the second diode VD2 discharge, the negative signal input end of this alarm delay controller IC4 becomes low level, the positive signal input end reference voltage of it and warning delay controller IC4 compares, when it is lower than its reference voltage, the signal output part of warning delay controller IC4 becomes high level, the second triode VT2 conducting, and chimes of doom is sent in loudspeaker BL energising.After the infrared signal of human body disappeared, the signal output part of voltage comparator ic 3 recovered again high level output, the second diode VD2 cut-off this moment.Because the voltage at the 6th capacitor C 6 two ends can not suddenly change, therefore slowly charge to the 6th capacitor C 6 by the 14 resistance R 14, when the voltage at the 6th capacitor C 6 two ends is higher than its reference voltage, the signal output part of warning delay controller IC4 just becomes low level, time is about 1 minute, namely continues warning in 1 minute.
As shown in drawings: form the start delay circuit by the 3rd triode VT3, the 20 resistance R 20 and the 8th capacitor C 8, time also is about 1 minute, arranging of it mainly is to prevent from reporting to the police immediately after the user from starting shooting, allow well the user have time enough to leave the scene of supervision, produce wrong report when sending a telegram here again after can preventing from simultaneously having a power failure.
As shown in drawings: this device adopts the 9-12V DC power supply, by the T step-down, and full-bridge U rectification, C10 filtering, testing circuit adopts IC5 78L06 power supply.This device AC/DC, the automatic non-interruption conversion.During making, before the end face of infrared sensor IC 1, Fresnel Lenses is installed, because the motion frequency scope of human body is 0.1-10Hz, need to be with Fresnel Lenses to the physical activity frequency multiplication.
As shown in drawings: connect with the mains and debug, allow a people walk about at 7-10m place, detector the place ahead, the 12 resistance R 12 in the Circuit tuning is reported to the police the information ring device and is got final product.Other parts can work with debugging hardly as long as component quality is good and weld errorlessly.
The machine utility model static working current is 10mA approximately, and plugged approximately enters stand-by state after 1 minute, as long as monitor that the district can report to the police just there is the people to enter, the people leaves rear approximately 1 minute stop alarm.
Claims (6)
1. infra-red detection burglar alarm cheaply, it is characterized in that: comprise the infrared ray sensing circuit, signal amplification circuit, voltage comparator circuit, delay circuit and audible alarm circuit, the signal output part of described infrared ray sensing circuit is connected with the signal input part of described signal amplification circuit, the signal output part of described signal amplification circuit is connected with the positive signal input end of described voltage comparator circuit, the signal output part of described voltage comparator circuit is connected with the signal input part of described delay circuit, and the signal output part of described delay circuit is connected with the signal input part of described acoustic alarm.
2. cheaply infra-red detection burglar alarm according to claim 1, it is characterized in that: described infrared ray sensing circuit comprises infrared ray sensor, the first resistance and the first electric capacity, the electrode input end of described infrared ray sensor is connected with positive source, the negative input of described infrared ray sensor is connected with described power cathode, the signal output part of described infrared ray sensor simultaneously with the first end of described the first resistance be connected the first end of the first electric capacity and be connected, the second end of described the first resistance is connected with described power cathode, and the second end of described the first electric capacity is connected with the signal input part of described signal amplification circuit.
3. cheaply infra-red detection burglar alarm according to claim 1, it is characterized in that: described signal amplification circuit comprises the first triode, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second electric capacity, the 3rd electric capacity and the 4th electric capacity, the base stage of described the first triode simultaneously with the second end of described the first electric capacity be connected the first end of the second resistance and be connected, the second end while of described the second resistance and the collector of described the first triode, the first end of described the 3rd resistance be connected the first end of the second electric capacity and connect, the second end of described the second electric capacity is connected with the first end of described the 4th resistance, the first end of described the 5th resistance is connected with the first end of described the 6th resistance, the first end of described the 7th resistance is connected with the first end of described the 3rd electric capacity, the second end of described the 7th resistance simultaneously with the first end of described the 8th resistance be connected the first end of the 4th electric capacity and be connected, the second end of described the 8th resistance be connected the second end of the 4th electric capacity and connect, the second end of described the 3rd resistance be connected the second end of the 5th resistance and all be connected with described positive source, the second end of described the 6th resistance, the second end of described the 3rd electric capacity be connected the emitter of the first triode and all be connected the second end of described the 4th resistance with described power cathode, the second end of described the 8th resistance be connected the second end of the 4th electric capacity and all be connected with the signal input part of described voltage comparator circuit.
4. cheaply infra-red detection burglar alarm according to claim 1, it is characterized in that: described voltage comparator circuit comprises operational amplifier, voltage comparator, the 5th electric capacity, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 13 resistance, the first diode and the second diode, the positive signal input end of described operational amplifier is connected with the second end of described the 7th resistance, the negative signal input end of described operational amplifier is connected with the second end of described the 4th resistance, the signal output part of described operational amplifier simultaneously with the second end of described the 8th resistance be connected the first end of the 5th electric capacity and be connected, the second end of described the 5th electric capacity simultaneously with the first end of described the 9th resistance be connected the negative signal input end of voltage comparator and be connected, the first end of described the tenth resistance simultaneously with the first end of described the 11 resistance be connected the positive pole of the first diode and be connected, the second end of described the 11 resistance simultaneously with the positive signal input end of described voltage comparator be connected the first end of the 12 resistance and be connected, the signal output part of described voltage comparator simultaneously with the first end of described the 13 resistance be connected the negative pole of the second diode and be connected, the second end of described the 13 resistance, the second end of described the tenth resistance, the positive source input end of described operational amplifier be connected the power cathode input end of voltage comparator and all be connected with described positive source, the power cathode input end of described operational amplifier, the second end of described the 9th resistance, the negative pole of described the first diode, the second end of described the 12 resistance be connected the positive source input end of voltage comparator and all be connected with described power cathode, the positive pole of described the second diode is connected with the signal input part of described delay circuit, and described the 12 resistance is variable resistor.
5. cheaply infra-red detection burglar alarm according to claim 1, it is characterized in that: described delay circuit comprises the 6th electric capacity, the 7th electric capacity, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, warning delay controller and the second triode, the first end while of described the 6th electric capacity and the positive pole of described the second diode, the first end of the 14 resistance be connected the negative signal input end of warning delay controller and connect, the first end of described the 15 resistance simultaneously with the first end of described the 16 resistance be connected the positive signal input end of warning delay controller and be connected, the signal output part while of described warning delay controller and the first end of described the 17 resistance, the first end of described the 7th electric capacity, the first end of described the 18 resistance connects, the first end of described the 18 resistance is connected with the base stage of described the second triode, the second end of described the 6th electric capacity, the second end of described the 16 resistance, the positive source input end of described warning delay controller be connected the emitter of the second triode and all be connected with described power cathode, the second end of described the 14 resistance, the second end of described the 15 resistance, the negative power supply input end of described warning delay controller, the second end of described the 17 resistance be connected the even described positive source of the second end of the 7th electric capacity and connect, the signal output part of described warning delay controller is connected with the signal input part of described acoustic alarm circuit.
6. cheaply infra-red detection burglar alarm according to claim 1, it is characterized in that: described acoustic alarm circuit comprises the 19 resistance, the 20 resistance, the 3rd diode, the 4th diode, the 3rd triode, the 8th electric capacity and loudspeaker, the first end of described the 19 resistance is connected with the signal output part of described warning delay controller, the second end of described the 19 resistance is connected with the positive pole of described the 3rd diode, the negative pole of described the 3rd diode is connected with the collector of described the 3rd triode, the base stage of described the 3rd triode is connected with the first end of described the 20 resistance, the second end of described the 20 resistance simultaneously with the first end of described the 8th electric capacity be connected the negative pole of the 4th diode and be connected, the second end of described the 8th electric capacity simultaneously with described positive source be connected the first end of loudspeaker and be connected, the second end of described loudspeaker is connected with the collector of described the second triode, the emitter of described the 3rd triode be connected the anodal of the 4th diode and be connected with described power cathode simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262760 CN202748896U (en) | 2012-06-06 | 2012-06-06 | Low-cost infrared detection anti-theft alarm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262760 CN202748896U (en) | 2012-06-06 | 2012-06-06 | Low-cost infrared detection anti-theft alarm |
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| CN202748896U true CN202748896U (en) | 2013-02-20 |
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| CN 201220262760 Expired - Fee Related CN202748896U (en) | 2012-06-06 | 2012-06-06 | Low-cost infrared detection anti-theft alarm |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281058A (en) * | 2013-05-14 | 2013-09-04 | 成都荣耀科技有限公司 | Signal comparison module for infrared transformer anti-theft system |
| CN103680024A (en) * | 2012-08-31 | 2014-03-26 | 成都达瑞斯科技有限公司 | Simple infrared alarm |
| CN104464219A (en) * | 2015-01-06 | 2015-03-25 | 成都果豆数字娱乐有限公司 | High-sensitivity infrared sensor for photoelectric alarm of mobile phone |
| CN105243775A (en) * | 2015-10-29 | 2016-01-13 | 黄霞 | Intelligent household anti-intrusion monitoring system based on infrared detector |
-
2012
- 2012-06-06 CN CN 201220262760 patent/CN202748896U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680024A (en) * | 2012-08-31 | 2014-03-26 | 成都达瑞斯科技有限公司 | Simple infrared alarm |
| CN103281058A (en) * | 2013-05-14 | 2013-09-04 | 成都荣耀科技有限公司 | Signal comparison module for infrared transformer anti-theft system |
| CN104464219A (en) * | 2015-01-06 | 2015-03-25 | 成都果豆数字娱乐有限公司 | High-sensitivity infrared sensor for photoelectric alarm of mobile phone |
| CN105243775A (en) * | 2015-10-29 | 2016-01-13 | 黄霞 | Intelligent household anti-intrusion monitoring system based on infrared detector |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20130606 |