Trigger self-locking type security and protection system circuit

Abstract

The invention discloses a trigger self-locking type security and protection system circuit. The trigger self-locking type security and protection system circuit includes a power supply circuit, a trigger circuit and an oscillator alarm circuit, wherein the trigger circuit includes a reed switch K, a triode V1, a resistor R2 and a unidirectional thyristor Q1; and the oscillator alarm circuit includes a triode V2, a triode V3 and a loudspeaker B. The trigger self-locking type security and protection system uses the reed switch on a door as an antitheft detection element, and utilizes the conduction characteristic of the thyristor to realize the breakage-proof type self-locking alarm function, so that once triggered, continuous alarming is started. Besides, the components used by the whole circuit design are less in the quantity, so that the trigger self-locking type security and protection system has the advantages of being low in cost, being stable in performance and being convenient touse.

Description

technical field [0001] The invention relates to the field of security technology, in particular to a trigger self-locking security system circuit. Background technique [0002] With the continuous improvement of living standards, people pay more and more attention to the safety protection of the family, especially at night when the owner is asleep, thieves sneak into the house to steal valuables. Therefore, installing an anti-theft alarm at home is a very effective anti-theft method. However, there are not many alarms used in ordinary households on the market, and a few of them also have defects such as insensitivity, high false alarm rate, and poor anti-interference. The alarm is always on, which not only affects the life of the alarm, but also consumes a lot of energy. , increasing the cost of use, the alarms produced are large in size, complex in structure, and poor in applicability. Contents of the invention [0003] The purpose of the present invention is to provide ...

AI Technical Summary

Problems solved by technology

However, there are not many alarms used in ordinary households on the market, and a few of them also have defects such as insensitivity, high false alarm rate, and poor anti-interference. The alarm is always on, which not only affects the life of the alarm, but also consumes a lot of energy. , increasing the cost of use, the alarm produced is large in size, complex in structure, and poor in applicability. At the same time, this type of alarm will only alarm when it is triggered. Once the trigger source is lost, the alarm function will be lost.

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