Anti-theft alarming device capable of moving with article

Abstract

The invention relates to an anti-theft alarming device capable of moving with an article. The anti-theft alarming device is characterized by comprising a 4.5V direct-current power supply, a moveable sensor, a unidirectional thyristor control circuit, a positive feedback oscillating circuit and a loudspeaker YS, wherein the moveable sensor and the unidirectional thyristor control circuit consist of mercury switches (1), unidirectional thyristors SCR and resistors R1; the positive feedback oscillating circuit consists of a resistor R2, an NPN type transistor VT1, a resistor R3, a PNP type transistor VT2, a capacitor C1, a resistor R4 and a loudspeaker YS. Nearly all the anti-theft devices in the market are fixed for use. The anti-theft alarming device capable of moving with the article, disclosed by the invention, can be fixedly arranged at a proper position of an anti-theft move-preventing device in use, such as a motorcar or a bicycle, a precious article and a cultural relic in a museum. When the article is moved, the alarming device gives sound, so that the aims of threatening uninvited guests and causing the attention of a person on duty are fulfilled.

Description

technical field [0001] The invention belongs to the technical field of electronics and security, and relates to an anti-theft alarm device that can be moved with items. Background technique [0002] Almost all anti-theft devices on the market are fixedly placed and used, and generally they cannot be installed with the movement of objects, which is subject to certain limitations in actual use. In order to overcome the defects existing in the existing anti-theft alarm devices on the market, it is necessary to develop an anti-theft alarm device that can move with the article. The movable anti-theft alarm device according to the present invention can be placed on anti-theft and anti-animal items, such as motorcycles or bicycles, valuables, cultural relics, etc., at appropriate positions when in use. When the object is moved, the alarm device will sound immediately. So as to achieve the purpose of intimidating uninvited guests and reminding the staff on duty. [0003] The circ...

AI Technical Summary

Problems solved by technology

[0002] Almost all anti-theft devices on the market are fixedly placed and used. Generally, it cannot be installed with the movement of the item, which is subject to certain limitations in actual use.

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