Balcony anti-theft alarm apparatus having initiative warning function

A technology of anti-theft alarm and balcony, which is applied in the electronic field, can solve the problem that the balcony anti-theft alarm cannot actively warn, and achieve the effect of protection safety and good effect

Inactive Publication Date: 2017-01-11
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a balcony anti-theft alarm with an active warning fun

Method used

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  • Balcony anti-theft alarm apparatus having initiative warning function

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the balcony anti-theft alarm with active alarm function of the present invention has a circuit consisting of a microwave induction circuit, a low frequency amplifier circuit, a time base circuit and an acousto-optic alarm circuit.

[0016] The microwave induction circuit is constructed with a Doppler effect sensor RD627 chip. Pin 4 of the RD627 chip is connected to a 12V power supply, pin 7 is grounded, a loop antenna W is connected between pin 1 and pin 2, and a capacitor C1 is connected between pin 3 and pin 5. 6 pins output backward.

[0017] The low-frequency amplifying circuit is constructed using two-stage transistors, the 6-pin of the RD627 chip is connected to the positive pole of the capacitor C2, the negative pole of the capacitor C2 is connected to one end of the resistor R1 and the base of the transistor Q1, and the other end

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Abstract

The invention provides a balcony anti-theft alarm apparatus having an initiative warning function. The circuits of the balcony anti-theft alarm apparatus include a microwave sensing circuit, a low-frequency amplifying circuit, a time-base circuit and an acousto-optical warning circuit, wherein the microwave sensing circuit can receive microwave signals reflected by a human body through an annular antenna. When a thief is close to a balcony monitoring zone, the alarm apparatus initiatively sends out acousto-optical warning to awe the thief in advance, makes the thief dare not to easily make a stealing decision, and accordingly further ensures the safety of family property. Due to the fact that the balcony anti-theft alarm apparatus has the initiative warning function, the effect of the alarm apparatus is better than that of a balcony anti-theft alarm apparatus, and the balcony anti-theft alarm apparatus is very worthy of market promotion.

Description

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Claims

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Application Information

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Owner GUANGXI UNIV
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