CN203681491U - Circuit for automobile theft prevention - Google Patents
Circuit for automobile theft prevention Download PDFInfo
- Publication number
- CN203681491U CN203681491U CN201320664199.9U CN201320664199U CN203681491U CN 203681491 U CN203681491 U CN 203681491U CN 201320664199 U CN201320664199 U CN 201320664199U CN 203681491 U CN203681491 U CN 203681491U
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- signal
- circuit
- vibration sensor
- automobile burglar
- vibration
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Abstract
The utility model relates to a circuit for automobile theft prevention. The circuit comprises a vibration sensor, a sensitivity controller, a signal amplifier and a singlechip microcomputer (SCM), wherein the vibration sensor is used for detecting the vibration of an automobile body and outputting a direct-current signal, the sensitivity controller is used for conditioning and controlling the direct-current signal, the signal amplifier is used for converting the signal from the sensitivity controller into a square wave signal and outputting the square wave signal, and the SCM is used for outputting an alarm signal; the vibration sensor is a gravity acceleration sensor; the vibration sensor, the sensitivity controller, the signal amplifier and the SCM are sequentially connected. The vibration sensor is the gravity acceleration sensor with high precision, so that the circuit has the advantages of high sensitivity and no false alarm.
Description
Technical field
The utility model belongs to automobile burglar technical field, specifically a kind of circuit for automobile burglar.
Background technology
At present, the vibration sensor in car alarm adopts the piezoelectric ceramic piece vibration signal of sampling; Thereby at the weather that thunders, or while meeting the situations such as firecrackers sound, easily produce wrong alerting signal.Visible, the accuracy that existing car alarm is reported to the police is not high.
Summary of the invention
For solving the existing technical matters of existing car alarm, the utility model provides the circuit for automobile burglar that a kind of accuracy of reporting to the police is high.
The technical scheme that the utility model adopts is as follows: for the circuit of automobile burglar, comprise the vibration sensor with output direct current signal for detection of body vibrations, for the sensitivity controller that described direct current signal is regulated, controlled, be used for the signal amplifier that is converted to square-wave signal from the signal of sensitivity controller and square-wave signal is exported, and the micro controller system of output alarm signal; Described vibration sensor is gravity acceleration sensor; Described vibration sensor, sensitivity controller, signal amplifier and micro controller system connect successively.
Described vibration sensor be installed on control instruments platform directly over.
The described circuit for automobile burglar also comprises the indicating member being connected with signal amplifier.Preferably, indicating member is LED light.
Described micro controller system is provided with vibration detection pin, and described signal amplifier is connected with this vibration detection pin.
Compared with existing alarms and security systems for automobiles, the utlity model has following beneficial effect:
1, vibration sensor of the present utility model adopts high-accuracy gravity acceleration sensor, and it is highly sensitive, does not report by mistake.
2, peripheral cell of the present utility model is few, and circuit structure is simple, be easy to realize, and working stability is reliable.
3, vibration sensor adopts external mode, be installed on control instruments platform directly over, convenient installation, and can effectively improve vibration sensitivity.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
Referring to Fig. 1, the utility model involving vibrations sensor 1, sensitivity controller 2, signal amplifier 3, LED light 4 and micro controller system 5, wherein vibration sensor 1, sensitivity controller 2 and signal amplifier 3 connect successively, and LED light 4 and micro controller system 5 are connected with signal amplifier 3 respectively.
Vibration sensor 1 is high-accuracy gravity acceleration sensor, be installed on control instruments platform directly over.When vehicle body produces vibration, vibration sensor 1 detects after the vibration signal of vehicle body, exports a direct current signal to sensitivity controller 2; Sensitivity controller 2 exports signal amplifier 3 to after described direct current signal is regulated, controlled; Signal amplifier 3 will be converted to square-wave signal from the signal of sensitivity controller 2, and square-wave signal is inputted respectively to the vibration detection pin of LED light 4 and micro controller system 5.Micro controller system 5 is received after square-wave signal, exports anti-theft alarm signal, controls other hardware, as buzzer phone produces alarm sound.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (5)
1. for the circuit of automobile burglar, it is characterized in that, comprise the vibration sensor with output direct current signal for detection of body vibrations, for the sensitivity controller that described direct current signal is regulated, controlled, be used for the signal amplifier that is converted to square-wave signal from the signal of sensitivity controller and square-wave signal is exported, and the micro controller system of output alarm signal; Described vibration sensor is gravity acceleration sensor; Described vibration sensor, sensitivity controller, signal amplifier and micro controller system connect successively.
2. the circuit for automobile burglar according to claim 1, is characterized in that, described vibration sensor be installed on control instruments platform directly over.
3. the circuit for automobile burglar according to claim 1, is characterized in that, the described circuit for automobile burglar also comprises the indicating member being connected with signal amplifier.
4. the circuit for automobile burglar according to claim 3, is characterized in that, described indicating member is LED light.
5. the circuit for automobile burglar according to claim 1, is characterized in that, described micro controller system is provided with vibration detection pin, and described signal amplifier is connected with this vibration detection pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664199.9U CN203681491U (en) | 2013-10-25 | 2013-10-25 | Circuit for automobile theft prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664199.9U CN203681491U (en) | 2013-10-25 | 2013-10-25 | Circuit for automobile theft prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203681491U true CN203681491U (en) | 2014-07-02 |
Family
ID=51003433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320664199.9U Expired - Fee Related CN203681491U (en) | 2013-10-25 | 2013-10-25 | Circuit for automobile theft prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203681491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467955A (en) * | 2014-12-24 | 2015-03-25 | 北京奥普科达科技有限公司 | High-sensitivity and high-precision optical fiber identification and calibration method and system |
-
2013
- 2013-10-25 CN CN201320664199.9U patent/CN203681491U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467955A (en) * | 2014-12-24 | 2015-03-25 | 北京奥普科达科技有限公司 | High-sensitivity and high-precision optical fiber identification and calibration method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |