CN105160786A - High-sensitivity sound-control anti-theft alarm circuit - Google Patents
High-sensitivity sound-control anti-theft alarm circuit Download PDFInfo
- Publication number
- CN105160786A CN105160786A CN201510600851.4A CN201510600851A CN105160786A CN 105160786 A CN105160786 A CN 105160786A CN 201510600851 A CN201510600851 A CN 201510600851A CN 105160786 A CN105160786 A CN 105160786A
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- triode
- electric capacity
- resistance
- base chip
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The invention discloses a high-sensitivity sound-control anti-theft alarm circuit, which comprises a DC power supply, a single-pole switch, a first resistor to a fifth resistor, a first capacitor to a sixth capacitor, a first triode, a second triode, a third triode, a potentiometer, a time base chip, a music chip, a piezoelectric ceramic chip and a loudspeaker, wherein the piezoelectric ceramic chip, the first triode and the second triode form a sound signal pickup amplifying circuit; and the time base chip, the music chip, the third triode and the loudspeaker form a sound output circuit. According to the high-sensitivity sound-control anti-theft alarm circuit, an alarming circuit can be triggered to give an alarm sound when a weak sound is picked up, interference among electronic elements is weak, and the overall circuit is strong in stability and high in sensitivity, and is competitive in the market.
Description
Technical field
The present invention relates to a kind of sound control anti-theft alarm circuit, particularly relate to a kind of highly sensitive sound control anti-theft alarm circuit.
Background technology
Due to warehouse be property intensively, be easy to the theft being subject to lawless person, be therefore standingly equipped with anti-theft warning circuit as monitoring.General sound control anti-theft alarm circuit alarm circuit, when picking up the sound arrived and being comparatively faint, can not be sounded by trigger alarm circuit, is easily stolen by lawless person's successful implementation or escape.
Summary of the invention
Object of the present invention is just to provide a kind of highly sensitive sound control anti-theft alarm circuit to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The highly sensitive sound control anti-theft alarm circuit of the present invention, comprise direct supply, single-pole switch, first resistance is to the 5th resistance, first electric capacity is to the 6th electric capacity, first triode, second triode, 3rd triode, potentiometer, time base chip, Music Clip, piezoelectric ceramic piece and loudspeaker, the positive pole of described direct supply is connected with the first end of described single-pole switch, second end of described single-pole switch respectively with the first end of described loudspeaker, the first end of described 4th resistance, the power input of base chip time described, the first end of described 3rd resistance, the first end of described second resistance is connected with the first end of described first resistance, second end of described loudspeaker is connected with the collector of described 3rd triode, the base stage of described 3rd triode is connected with the output terminal of described Music Clip, the power input of described Music Clip is connected with the output terminal of base chip time described, second end of described 4th resistance is connected with the clear terminal of base chip time described and the first end of described 5th electric capacity respectively, time described, the control voltage end of base chip is connected with the first end of described 4th electric capacity, second end of described 3rd resistance respectively with the high-triggering end of base chip time described, time described, the discharge end of base chip is connected with the first end of described 3rd electric capacity, time described, the discharge end of base chip is connected with the first end of described 6th electric capacity, second end of described 6th electric capacity is connected with the second end of described second resistance and the collector of described second triode respectively, second end of described first resistance is connected with the base stage of described second triode and the collector of described first triode respectively, the emitter of described second triode is connected with the first end of described 5th resistance, the base stage of described first triode is connected with the first end of described first electric capacity and the first end of described potentiometer respectively, second end of described potentiometer is connected with the sliding end of described potentiometer and the first end of described second electric capacity respectively, second end of described first electric capacity is connected with the first end of described piezoelectric ceramic piece, second end of described piezoelectric ceramic piece respectively with the emitter of described first triode, second end of described 5th resistance, second end of described second electric capacity, second end of described 3rd electric capacity, the earth terminal of base chip time described, second end of described 4th electric capacity, second end of described 5th electric capacity, the earth terminal of described Music Clip, the emitter of described 3rd triode is connected with the negative pole of described direct supply.
Beneficial effect of the present invention is:
The highly sensitive sound control anti-theft alarm circuit of the present invention, also can send chimes of doom by trigger alarm circuit in pickup to during comparatively faint sound, the interference between electronic component is more weak, and the stability of whole circuit is strong, highly sensitive, possesses competitive power in the market.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the highly sensitive sound control anti-theft alarm circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the highly sensitive sound control anti-theft alarm circuit of the present invention, comprise direct supply E, single-pole switch K, first resistance R1 is to the 5th resistance R5, first electric capacity C1 is to the 6th electric capacity C6, first triode VT1, second triode VT2, 3rd triode VT3, potentiometer RP, time base chip IC 1, Music Clip IC2, piezoelectric ceramic piece B and loudspeaker BL, the positive pole of direct supply E is connected with the first end of single-pole switch K, second end of single-pole switch K respectively with the first end of loudspeaker BL, the first end of the 4th resistance R4, time base chip IC 1 power input, the first end of the 3rd resistance R3, the first end of the second resistance R2 is connected with the first end of the first resistance R1, second end of loudspeaker BL is connected with the collector of the 3rd triode VT3, the base stage of the 3rd triode VT3 is connected with the output terminal of Music Clip IC2, the power input of Music Clip IC2 with time base chip IC 1 output terminal be connected, second end of the 4th resistance R4 respectively with time the clear terminal of base chip IC 1 and the first end of the 5th electric capacity C5 be connected, time base chip IC 1 control voltage end be connected with the first end of the 4th electric capacity C4, second end of the 3rd resistance R3 respectively with time base chip IC 1 high-triggering end, time base chip IC 1 discharge end be connected with the first end of the 3rd electric capacity C3, time base chip IC 1 discharge end be connected with the first end of the 6th electric capacity C6, second end of the 6th electric capacity C6 is connected with second end of the second resistance R2 and the collector of the second triode VT2 respectively, second end of the first resistance R1 is connected with the base stage of the second triode VT2 and the collector of the first triode VT1 respectively, the emitter of the second triode VT2 is connected with the first end of the 5th resistance R5, the base stage of the first triode VT1 is connected with the first end of the first electric capacity C1 and the first end of potentiometer RP respectively, second end of potentiometer RP is connected with the sliding end of potentiometer RP and the first end of the second electric capacity C2 respectively, second end of the first electric capacity C1 is connected with the first end of piezoelectric ceramic piece B, second end of piezoelectric ceramic piece B respectively with the emitter of the first triode VT1, second end of the 5th resistance R5, second end of the second electric capacity C2, second end of the 3rd electric capacity C3, time base chip IC 1 earth terminal, second end of the 4th electric capacity C4, second end of the 5th electric capacity C5, the earth terminal of Music Clip IC2, the emitter of the 3rd triode VT3 is connected with the negative pole of direct supply E.Time base chip IC 1 select NE555 type time-base integrated circuit, Music Clip IC2 selects KD9561 type music integrated circuit.The voice signal that piezoelectric ceramic piece B picks up converts electric signal to, through the first triode VT1 and the second triode VT2, signal is amplified after the first electric capacity C1 filtering, base chip IC 1 when signal after amplification inputs after the 6th electric capacity C6 filtering, time base chip IC 1 by the electric signal input Music Clip IC2 after process, music signal makes loudspeaker BL send chimes of doom after the 3rd triode VT3 amplifies.
Claims (1)
1. a highly sensitive sound control anti-theft alarm circuit, it is characterized in that: comprise direct supply, single-pole switch, first resistance is to the 5th resistance, first electric capacity is to the 6th electric capacity, first triode, second triode, 3rd triode, potentiometer, time base chip, Music Clip, piezoelectric ceramic piece and loudspeaker, the positive pole of described direct supply is connected with the first end of described single-pole switch, second end of described single-pole switch respectively with the first end of described loudspeaker, the first end of described 4th resistance, the power input of base chip time described, the first end of described 3rd resistance, the first end of described second resistance is connected with the first end of described first resistance, second end of described loudspeaker is connected with the collector of described 3rd triode, the base stage of described 3rd triode is connected with the output terminal of described Music Clip, the power input of described Music Clip is connected with the output terminal of base chip time described, second end of described 4th resistance is connected with the clear terminal of base chip time described and the first end of described 5th electric capacity respectively, time described, the control voltage end of base chip is connected with the first end of described 4th electric capacity, second end of described 3rd resistance respectively with the high-triggering end of base chip time described, time described, the discharge end of base chip is connected with the first end of described 3rd electric capacity, time described, the discharge end of base chip is connected with the first end of described 6th electric capacity, second end of described 6th electric capacity is connected with the second end of described second resistance and the collector of described second triode respectively, second end of described first resistance is connected with the base stage of described second triode and the collector of described first triode respectively, the emitter of described second triode is connected with the first end of described 5th resistance, the base stage of described first triode is connected with the first end of described first electric capacity and the first end of described potentiometer respectively, second end of described potentiometer is connected with the sliding end of described potentiometer and the first end of described second electric capacity respectively, second end of described first electric capacity is connected with the first end of described piezoelectric ceramic piece, second end of described piezoelectric ceramic piece respectively with the emitter of described first triode, second end of described 5th resistance, second end of described second electric capacity, second end of described 3rd electric capacity, the earth terminal of base chip time described, second end of described 4th electric capacity, second end of described 5th electric capacity, the earth terminal of described Music Clip, the emitter of described 3rd triode is connected with the negative pole of described direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600851.4A CN105160786A (en) | 2015-09-18 | 2015-09-18 | High-sensitivity sound-control anti-theft alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600851.4A CN105160786A (en) | 2015-09-18 | 2015-09-18 | High-sensitivity sound-control anti-theft alarm circuit |
Publications (1)
| Publication Number | Publication Date |
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| CN105160786A true CN105160786A (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510600851.4A Pending CN105160786A (en) | 2015-09-18 | 2015-09-18 | High-sensitivity sound-control anti-theft alarm circuit |
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| CN (1) | CN105160786A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000928A (en) * | 2018-07-19 | 2018-12-14 | 广州市楚佰环保科技有限公司 | A kind of detection method of automobile engine operation |
| CN109741558A (en) * | 2019-01-11 | 2019-05-10 | 重庆电子工程职业学院 | Warning device is used in a kind of identification of domestic intelligent |
| CN109982014A (en) * | 2019-04-22 | 2019-07-05 | 合肥惠科金扬科技有限公司 | A kind of driving circuit and television set |
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| CN104679045A (en) * | 2013-11-27 | 2015-06-03 | 成都优百沃科技有限公司 | High flexibility sound control circuit of vibration frequency for mobile phone game |
| CN205068656U (en) * | 2015-09-18 | 2016-03-02 | 成都索客通信息技术有限公司 | High sensitivity's acoustic control theftproof warning circuit |
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2015
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| JP2008155862A (en) * | 2006-12-26 | 2008-07-10 | Rohm Co Ltd | Car security device |
| CN104637211A (en) * | 2013-11-12 | 2015-05-20 | 成都麦客堂信息技术有限公司 | Alarm for preventing network coupling box from being illegally opened |
| CN104658144A (en) * | 2013-11-19 | 2015-05-27 | 成都万维图新信息技术有限公司 | Touch-type anti-theft alarm |
| CN104679045A (en) * | 2013-11-27 | 2015-06-03 | 成都优百沃科技有限公司 | High flexibility sound control circuit of vibration frequency for mobile phone game |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000928A (en) * | 2018-07-19 | 2018-12-14 | 广州市楚佰环保科技有限公司 | A kind of detection method of automobile engine operation |
| CN109741558A (en) * | 2019-01-11 | 2019-05-10 | 重庆电子工程职业学院 | Warning device is used in a kind of identification of domestic intelligent |
| CN109741558B (en) * | 2019-01-11 | 2021-02-12 | 重庆电子工程职业学院 | Household intelligent recognition alarm device |
| CN109982014A (en) * | 2019-04-22 | 2019-07-05 | 合肥惠科金扬科技有限公司 | A kind of driving circuit and television set |
| CN109982014B (en) * | 2019-04-22 | 2023-09-29 | 重庆惠科金扬科技有限公司 | Driving circuit and television |
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