CN109979142A - A kind of alarm transducer - Google Patents
A kind of alarm transducer Download PDFInfo
- Publication number
- CN109979142A CN109979142A CN201910321356.8A CN201910321356A CN109979142A CN 109979142 A CN109979142 A CN 109979142A CN 201910321356 A CN201910321356 A CN 201910321356A CN 109979142 A CN109979142 A CN 109979142A
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- Prior art keywords
- capacitor
- resistance
- chip
- microwave induced
- pin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of alarm transducers, it is made of DC power supply, first resistor to the 5th resistance, first capacitor to the 5th capacitor, microwave induced chip, audio integrated chip, operational amplifier, antenna, variable resistance, triode, light emitting diode, switch, voltage-stabiliser tube and loudspeaker, when microwave induced chip has sensed personnel activity, output signal to the base stage of triode, light emitting diode is lighted, signal drives audio integrated chip to export audio, and audio makes loudspeaker issue loud alarm after operational amplifier amplifies.Compared with prior art, the present invention is by microwave induced control trigger circuit, and microwave induced chip is not necessarily on surface, that is, implementable, therefore, entire circuit package can be got up, inductor can be stashed completely, it is not easy to be found, it can such as be installed in the door body of security door, it is not found, avoids being cracked, and circuit structure is simple, cost of manufacture is cheap, has the value of popularization and application.
Description
Technical field
The present invention relates to alarm technical field more particularly to a kind of alarm transducers.
Background technique
Burglar alarm in the prior art is and this kind of burglar alarms by vibration, the monitoring such as infrared mostly
Device is all not easy to hide, and is easy to be found, to be cracked, anti-theft performance decline, accordingly, there exist rooms for improvement.
Summary of the invention
The object of the invention is that providing a kind of highly sensitive burglar alarm to solve the above-mentioned problems.
The present invention through the following technical solutions to achieve the above objectives:
The present invention by DC power supply, first resistor to the 5th resistance, first capacitor to the 5th capacitor, microwave induced chip,
Audio integrated chip, operational amplifier, antenna, variable resistance, triode, light emitting diode, switch, voltage-stabiliser tube and loudspeaker group
At DC power supply 12V, first resistor R1 are 100 Ω, second resistance R2 is 400 Ω, 3rd resistor R3 is 500 Ω, the 4th electricity
Resistance R4 is 2k Ω, the 5th resistance R5 is 27k Ω, first capacitor C1 is 300uf, the second capacitor C2 is 470uf, third capacitor C3 is
100uf, the 4th capacitor C4 are 1000uf, the 5th capacitor C5 is 10uf, microwave induced chip model is TWH9250, audio is integrated
Chip model is LC246, operational amplifier model LM341, variable resistance are 510k Ω, triode is PNP type triode, hair
Optical diode is 0.5W, voltage-stabiliser tube model 2CW1；
The anode of DC power supply simultaneously with the 6th pin of operational amplifier, the first end of third capacitor, triode hair
The anode connection of emitter-base bandgap grading and microwave induced chip, the cathode of DC power supply while the cathode with microwave induced chip, second resistance
First end, the first end of first capacitor, the anode of voltage-stabiliser tube, the 4th pin of audio integrated chip, the 5th resistance first
End, the second end of third capacitor, the second pin of operational amplifier, operational amplifier the 4th pin and loudspeaker first end
Connection, antenna are connect with the induction end of microwave induced chip, and variable resistance is connect with the control terminal of microwave induced chip, microwave sense
The output end of chip is answered to connect by first resistor and the base stage of triode, the collector of triode while the first end with switch
With the anode connection of light emitting diode, the second end of the cathode of light emitting diode and second resistance is connected, the second end of switch with
The first end of 3rd resistor connects, the second end of 3rd resistor simultaneously with the second end of first resistor, the cathode of voltage-stabiliser tube, audio
The 7th of integrated chip connects with the 8th pin, and the 4th resistance is connected between the first and second pins of audio integrated chip,
The second pin of audio integrated chip is connect with the first end of the second capacitor, the second end of the second capacitor simultaneously with the 5th resistance
Second end is connected with the third pin of operational amplifier, the 4th capacitance connection in operational amplifier first and the 8th pin it
Between, the 5th pin of operational amplifier is connected by the second end of the 5th capacitor and loudspeaker.
The beneficial effects of the present invention are:
The present invention is a kind of alarm transducer, and compared with prior art, the present invention is triggered by microwave induced control
Circuit, microwave induced chip are not necessarily to that therefore, entire circuit package can be got up, can will be felt on surface, that is, implementable
Device is answered to stash completely, it is not easy to it is found, can such as be installed in the door body of security door, not be found, avoid being cracked,
And circuit structure is simple, cost of manufacture is cheap, has the value of popularization and application.
Detailed description of the invention
Fig. 1 is circuit structure schematic diagram of the invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
The present invention is by DC power supply, first resistor R1 to the 5th resistance R5, first capacitor C1 to the 5th electricity as shown in Figure 1:
Hold C5, microwave induced chip IC 1, audio and integrates chip IC 2, operational amplifier IC3, antenna TX, variable resistance RT, triode
VT, Light-emitting diode LED, switch K, voltage-stabiliser tube DW and loudspeaker Y composition, DC power supply 12V, first resistor R1 be 100 Ω,
Second resistance R2 is 400 Ω, 3rd resistor R3 is 500 Ω, the 4th resistance R4 is 2k Ω, the 5th resistance R5 is 27k Ω, the first electricity
Appearance C1 is 300uf, the second capacitor C2 is 470uf, third capacitor C3 is 100uf, the 4th capacitor C4 is 1000uf, the 5th capacitor C5
2 model LC246 of chip IC, operational amplifier IC3 are integrated for 10uf, 1 model TWH9250 of microwave induced chip IC, audio
Model LM341, variable resistance RT are 510k Ω, triode VT is PNP type triode, Light-emitting diode LED 0.5W, pressure stabilizing
Pipe DW model 2CW1；
DC power supply anode simultaneously with the 6th pin of operational amplifier IC3, the first end of third capacitor C3, triode
The anode connection of the emitter of VT and microwave induced chip IC 1, the cathode of DC power supply are negative with microwave induced chip IC 1 simultaneously
Pole, the first end of second resistance R2, the first end of first capacitor C1, the anode of voltage-stabiliser tube DW, audio integrate the 4th of chip IC 2
Pin, the first end of the 5th resistance R5, the second end of third capacitor C3, the second pin of operational amplifier IC3, operational amplifier
The 4th pin of IC3 is connected with the first end of loudspeaker Y, and antenna TX is connect with the induction end of microwave induced chip IC 1, can power transformation
Resistance RT is connect with the control terminal of microwave induced chip IC 1, and the output end of microwave induced chip IC 1 passes through first resistor R1 and three poles
The base stage of pipe VT connects, and the collector of triode VT is connect with the anode of the first end of switch K and Light-emitting diode LED simultaneously,
The cathode of Light-emitting diode LED is connect with the second end of second resistance R2, the second end of switch K and the first end of 3rd resistor R3
Connection, the second end of 3rd resistor R3 simultaneously with the second end of first resistor R1, the cathode of voltage-stabiliser tube DW, audio integrated chip
The 7th of IC2 connects with the 8th pin, and the 4th resistance R4 is connected to audio and integrates between the first and second pins of chip IC 2,
The second pin that audio integrates chip IC 2 is connect with the first end of the second capacitor C2, the second end of the second capacitor C2 while with the
The second end of five resistance R5 is connected with the third pin of operational amplifier IC3, and the 4th capacitor C4 is connected to operational amplifier IC3's
First and the 8th between pin, and the 5th pin of operational amplifier IC3 is connected by the second end of the 5th capacitor C5 and loudspeaker Y
It connects.
Working principle of the present invention is as follows:
When the burglar alarm interior of needs is without personnel, closure switch K, microwave induced chip IC 1 passes through antenna TX
Whether induction interior has personnel activity, and variable resistance RT adjusts the induction sensitivity of microwave induced chip IC 1, when microwave induced core
When piece IC1 has sensed personnel activity, the base stage of triode VT is outputed signal to, light emitting diode is lighted, and signal drives audio
Integrated chip IC2 exports audio, and audio makes loudspeaker Y issue loud alarm after operational amplifier IC3 is amplified.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of alarm transducer, it is characterised in that: extremely by DC power supply, first resistor to the 5th resistance, first capacitor
5th capacitor, microwave induced chip, audio integrated chip, operational amplifier, antenna, variable resistance, triode, light-emitting diodes
Pipe, switch, voltage-stabiliser tube and loudspeaker composition, DC power supply 12V, first resistor is 100 Ω, second resistance is 400 Ω, third
Resistance is 500 Ω, the 4th resistance is 2k Ω, the 5th resistance is 27k Ω, first capacitor 300uf, the second capacitor are 470uf,
Three capacitors are 100uf, the 4th capacitor is 1000uf, the 5th capacitor is 10uf, microwave induced chip model is TWH9250, audio
Integrated chip model LC246, operational amplifier model LM341, variable resistance are 510k Ω, triode is three pole of positive-negative-positive
Pipe, light emitting diode 0.5W, voltage-stabiliser tube model 2CW1；
The anode of DC power supply simultaneously with the 6th pin of operational amplifier, the first end of third capacitor, triode emitter
With the anode connection of microwave induced chip, the cathode of DC power supply simultaneously with the cathode of microwave induced chip, second resistance the
One end, the first end of first capacitor, the anode of voltage-stabiliser tube, the 4th pin of audio integrated chip, the first end of the 5th resistance,
The second ends of three capacitors, the second pin of operational amplifier, operational amplifier the 4th pin connected with the first end of loudspeaker,
Antenna is connect with the induction end of microwave induced chip, and variable resistance is connect with the control terminal of microwave induced chip, microwave induced core
The output end of piece is connected by first resistor and the base stage of triode, the collector of triode while first end and hair with switch
The anode connection of optical diode, the cathode of light emitting diode and the second end of second resistance connect, the second end and third of switch
The first end of resistance connects, and the second end of 3rd resistor is integrated with the second end of first resistor, the cathode of voltage-stabiliser tube, audio simultaneously
The 7th of chip connects with the 8th pin, and the 4th resistance is connected between the first and second pins of audio integrated chip, audio
The second pin of integrated chip is connect with the first end of the second capacitor, the second end of the second capacitor simultaneously with the 5th resistance second
End is connected with the third pin of operational amplifier, and the 4th capacitance connection between pin, is transported in the first of operational amplifier and the 8th
The 5th pin for calculating amplifier is connected by the second end of the 5th capacitor and loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321356.8A CN109979142A (en) | 2019-04-22 | 2019-04-22 | A kind of alarm transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321356.8A CN109979142A (en) | 2019-04-22 | 2019-04-22 | A kind of alarm transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109979142A true CN109979142A (en) | 2019-07-05 |
Family
ID=67085459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910321356.8A Withdrawn CN109979142A (en) | 2019-04-22 | 2019-04-22 | A kind of alarm transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109979142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291902A (en) * | 2020-09-15 | 2021-01-29 | 海洋王（东莞）照明科技有限公司 | Microwave induction drive circuit, alarm and lamp |
-
2019
- 2019-04-22 CN CN201910321356.8A patent/CN109979142A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291902A (en) * | 2020-09-15 | 2021-01-29 | 海洋王（东莞）照明科技有限公司 | Microwave induction drive circuit, alarm and lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190705 |