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Buffer protection type infrared anti-theft alarm system

An anti-theft alarm and protection technology, which is applied in anti-theft alarms, alarms, emergency protection circuit devices, etc., can solve problems such as false alarms and low stability, and achieve reduced impact, strong resistance to common-mode interference, and good interference effect

Inactive Publication Date: 2016-11-09
成都零一智慧科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to solve the disadvantages of the existing infrared anti-theft alarm system, such as low stability and prone to false alarms, and provide a buffer protection infrared anti-theft alarm system

Method used

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  • Buffer protection type infrared anti-theft alarm system

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Embodiment

[0018] Such as figure 1 Shown, the present invention is mainly by alarm BL, optocoupler U, triode VT3, triode VT4, triode VT5, triode VT7, the resistor connected in series between the emitter of triode VT3 and the second input terminal of photocoupler U R6, a diode D3 whose P pole is connected to the base of the transistor VT3, and whose N pole is connected to the second input terminal of the optocoupler U, and a resistor R7 connected in series between the collector of the transistor VT4 and the collector of the transistor VT3 , the P pole is connected to the first output terminal of the photocoupler U, the N pole is connected to the diode D4 of the power supply, the resistor R9 is connected in series between the N pole of the diode D4 and the base of the transistor VT5, and connected in series to the transistor VT5 The resistor R10 between the collector and the N pole of the diode D4, the P pole is connected to the emitter of the transistor VT5, the diode D5 whose N pole is c...

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Abstract

The invention discloses a buffer protection type infrared anti-theft alarm system. The system is characterized by mainly comprising an alarm BL, an optoelectronic coupler U, a triode VT3, a triode VT4, a triode VT5, a triode VT7, a resistor R6, a diode D3 and the like. The resistor R6 is connected in series between the emitter of the triode VT3 and the second input end of the optoelectronic coupler U. The P electrode of the diode D3 is connected with the base electrode of the triode VT3, and the N electrode of the diode D3 is connected with the second input end of the optoelectronic coupler U. According to the technical scheme of the invention, the system has strong anti-common-mode interference capability and can well inhibit the interference. Meanwhile, the system is not influenced by the electromagnetic interference itself, thus being higher in stability compared with a traditional infrared alarm system. Meanwhile, compared with the traditional infrared alarm system wherein the false alarm condition is easy to occur, the alarm accuracy rate of the above system is improved to be over 95%, while the alarm accuracy rate of the traditional infrared alarm system is only 80%.

Description

technical field [0001] The invention relates to an alarm system, in particular to a buffer protection infrared anti-theft alarm system. Background technique [0002] As people pay more and more attention to safety issues, various security products have appeared on the market, among which infrared anti-theft alarm system is more popular because of its safety and concealment. However, the existing infrared anti-theft alarm system has low stability and is prone to false alarms, and its alarm accuracy rate is only 80%, which cannot effectively provide protection for people's personal and property safety. Contents of the invention [0003] The purpose of the present invention is to solve the defects that the existing infrared anti-theft alarm system has low stability and prone to false alarm phenomenon, and provides a buffer protection type infrared anti-theft alarm system. [0004] The purpose of the present invention is achieved through the following technical solutions: a b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/183H02H9/04
CPCG08B13/183H02H9/045
Inventor 向勇朱焱麟宋世湃彭晓丽
Owner 成都零一智慧科技有限公司
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