CN207233143U - Security burglar alarm - Google Patents
Security burglar alarm Download PDFInfo
- Publication number
- CN207233143U CN207233143U CN201721297332.6U CN201721297332U CN207233143U CN 207233143 U CN207233143 U CN 207233143U CN 201721297332 U CN201721297332 U CN 201721297332U CN 207233143 U CN207233143 U CN 207233143U
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- capacitance
- alert audio
- operational amplifier
- power supply
- resistance
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Abstract
The utility model discloses a kind of security burglar alarm, including DC power supply, microwave remote sensor, alert audio integrated chip, operational amplifier, first resistor is to the 4th resistance, first capacitance to the 4th capacitance, light emitting diode, triode, switch, voltage-stabiliser tube and loudspeaker, whether there is human body to approach by the sensing of microwave induced chip, when having sensed that human body is close, export signal, signal exports after triode amplifies, light emitting diode is lighted, the work of alert audio integrated chip is triggered at the same time, export alert audio signal, input to loudspeaker is alarmed after operational amplifier amplifies, compared with prior art, the utility model passes through microwave sensor sensing, alarm when there is human body close, improve anti-destructive, and then improve anti-theft effect, have the value of popularization and application.
Description
Technical field
It the utility model is related to electronic technology field, more particularly to a kind of security burglar alarm.
Background technology
Alarm is a kind of consequence to prevent or preventing caused by certain event occurs, and is come in the form of sound, light, air pressure etc.
The electronic product for reminding or warning us that certain should be taken to take action.In the prior art, burglar alarm mostly be using it is infrared,
The sensing of the sensings such as vibrations is formed, in order to improve warning effect, it is necessary to constantly improve and innovation.
Utility model content
The purpose of this utility model is that to solve the above-mentioned problems and provides a kind of security burglar alarm.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model includes DC power supply, microwave remote sensor, alert audio integrated chip, operational amplifier, the first electricity
Hinder to the 4th resistance, the first capacitance to the 4th capacitance, light emitting diode, triode, switch, voltage-stabiliser tube and loudspeaker, direct current
The cathode in source is passed with the cathode power supply end of operational amplifier, the first end of the 3rd capacitance, the emitter of triode and microwave at the same time
The cathode power supply end connection of sensor, the anode of the DC power supply first end with loudspeaker, the negative power supply of operational amplifier at the same time
End, the negative signal input terminal of operational amplifier, the first end of the 4th resistance, second end, the alert audio of the 3rd capacitance integrate
4th pin of chip, the cathode of voltage-stabiliser tube, the first end of the first capacitance, the first end of first resistor and microwave remote sensor it is negative
The connection of pole power end, the signal output part of microwave remote sensor and the base stage of triode connect, the collector of triode at the same time with hair
The cathode of optical diode is connected with the first end of switch, and the anode of light emitting diode and the second end of first resistor connect, switch
Second end and the first end of second resistance connect, the second end of the second resistance second end with the first capacitance, voltage-stabiliser tube at the same time
Anode, the 7th of alert audio integrated chip the connected with the 8th pin, the first pin of alert audio integrated chip passes through
Three resistance are connected with the second pin of alert audio chip, and the 5th pin of alert audio chip and the first end of the second capacitance connect
Connect, the second end of the second capacitance is connected with the second end of the 4th resistance and the positive signal input terminal of operational amplifier at the same time, is transported
The output terminal for calculating amplifier is connected by the second end of the 4th capacitance and loudspeaker.
The beneficial effects of the utility model are：
The utility model is a kind of security burglar alarm, and compared with prior art, the utility model is sensed by microwave
Device senses, and alarms when there is human body close, improves anti-destructive, and then improves anti-theft effect, has and promotes and applies
Value.
Brief description of the drawings
Fig. 1 is the circuit structure schematic diagram of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1：The utility model includes DC power supply, microwave remote sensor IC1, alert audio integrated chip IC2, fortune
Calculate amplifier IC3, first resistor R1 to the 4th resistance R4, the first capacitance C1 to the 4th capacitance C4, Light-emitting diode LED, three poles
Pipe VT, switch SA, voltage-stabiliser tube DW and loudspeaker B, the cathode of DC power supply at the same time the cathode power supply end with operational amplifier IC3,
The first end of 3rd capacitance C3, the emitter of triode VT are connected with the cathode power supply end of microwave remote sensor IC1, DC power supply
The first end with loudspeaker B, the negative electricity source of operational amplifier IC3, the negative signal of operational amplifier IC3 are defeated at the same time for anode
Enter end, the first end of the 4th resistance R4, the second end of the 3rd capacitance C3, the 4th pin of alert audio integrated chip IC2, voltage stabilizing
The cathode of pipe DW, the first end of the first capacitance C1, the negative electricity source of the first end of first resistor R1 and microwave remote sensor IC1 connect
Connect, the signal output part of microwave remote sensor IC1 is connected with the base stage of triode VT, and the collector of triode VT is at the same time with shining two
The cathode of pole pipe LED is connected with the first end of switch SA, and the anode of Light-emitting diode LED connects with the second end of first resistor R1
Connect, the second end for switching SA is connected with the first end of second resistance R2, the second end of second resistance R2 at the same time with the first capacitance C1
Second end, voltage-stabiliser tube DW anode, the 7th of alert audio integrated chip IC2 the connected with the 8th pin, alert audio integrates
First pin of chip IC 2 is connected by 3rd resistor R3 with the second pin of alert audio chip IC 2, alert audio chip
The 5th pin of IC2 is connected with the first end of the second capacitance C2, the second end of the second capacitance C2 at the same time with the 4th resistance R4 the
Two ends are connected with the positive signal input terminal of operational amplifier IC3, the output terminal of operational amplifier IC3 by the 4th capacitance C4 with
The second end connection of loudspeaker B.
The operation principle of the utility model is as follows：
Whether have human body approach, when having sensed that human body is close, export signal if being sensed by microwave induced chip IC 1,
Signal exports after triode VT amplifications, and Light-emitting diode LED is lighted, while triggers alert audio integrated chip IC2 work, defeated
Go out alert audio signal, input to loudspeaker B and alarm after operational amplifier IC3 amplifications, to play antitheft and warning
Effect.
The advantages of basic principle and main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (1)
- A kind of 1. security burglar alarm, it is characterised in that：Including DC power supply, microwave remote sensor, alert audio integrated chip, Operational amplifier, first resistor to the 4th resistance, the first capacitance to the 4th capacitance, light emitting diode, triode, switch, voltage stabilizing Pipe and loudspeaker, the cathode of DC power supply at the same time with the cathode power supply end of operational amplifier, the first end of the 3rd capacitance, triode Emitter connected with the cathode power supply end of microwave remote sensor, the first end with loudspeaker, the computing at the same time of the anode of DC power supply The negative electricity source of amplifier, the negative signal input terminal of operational amplifier, the first end of the 4th resistance, the second of the 3rd capacitance End, the 4th pin of alert audio integrated chip, the cathode of voltage-stabiliser tube, the first end of the first capacitance, the first end of first resistor Connected with the negative electricity source of microwave remote sensor, the signal output part of microwave remote sensor and the base stage of triode connect, triode Collector be connected at the same time with the cathode of light emitting diode and the first end switched, the anode of light emitting diode and first resistor Second end connects, and the first end of the second end of switch and second resistance connects, the second end of second resistance at the same time with the first capacitance Second end, voltage-stabiliser tube anode, the 7th of alert audio integrated chip the connected with the 8th pin, alert audio integrated chip First pin is connected by 3rd resistor with the second pin of alert audio chip, the 5th pin of alert audio chip and second The first end connection of capacitance, the second end of the second capacitance at the same time with the second end of the 4th resistance and the positive signal of operational amplifier Input terminal connects, and the output terminal of operational amplifier is connected by the second end of the 4th capacitance and loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721297332.6U CN207233143U (en) | 2017-10-10 | 2017-10-10 | Security burglar alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721297332.6U CN207233143U (en) | 2017-10-10 | 2017-10-10 | Security burglar alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207233143U true CN207233143U (en) | 2018-04-13 |
Family
ID=61850875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721297332.6U Active CN207233143U (en) | 2017-10-10 | 2017-10-10 | Security burglar alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207233143U (en) |
-
2017
- 2017-10-10 CN CN201721297332.6U patent/CN207233143U/en active Active
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