Circuit of amplifying signal in transformer anti-theft monitoring system

A technology for amplifying signals and monitoring systems. It is applied in the direction of alarms that rely on interference with short-wavelength radiation. It can solve the problems of weak infrared signals and affect the monitoring system, and achieve the effect of ensuring normal application, simple overall structure and easy implementation.

Inactive Publication Date: 2013-08-28
CHENGDU RONGYAO TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing transformer anti-theft system affects the judgment of the monitoring system due to the weak infrared signal output by the infrared sensor, and provides a circuit for amplifying signals in the transformer anti-theft monitoring system. The infrared signal is amplified to ensure that the anti-theft system makes a correct judgment

Method used

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  • Circuit of amplifying signal in transformer anti-theft monitoring system

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Embodiment

[0018] Such as figure 1 As shown, the signal amplifying circuit in the transformer anti-theft monitoring system includes an infrared sensor J1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a third capacitor The capacitor C3, the first transistor Q1 and the first operational amplifier A1, wherein the first transistor Q1 is an NPN transistor. The infrared sensor J1 includes three pins D, S, and G. The D pin is connected to the first power supply voltage input line 1, the S pin is connected to the first capacitor C1, and the G pin is grounded. Among them, the S pin outputs a weak electric current. The signal is sent to the first capacitor C1. The other end of the first capacitor C1 connected to the end of the infrared sensor 1 is connected to the base of the first transistor Q1, the emitter of the first transistor Q1 is grounded, and the two ends of the second capacitor C2 are respectively conn...

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Abstract

The invention discloses a circuit of amplifying a signal in a transformer anti-theft monitoring system. The circuit of amplifying the signal in the transformer anti-theft monitoring system comprises an infrared sensor (J1), a first capacitor (C1), a first audion (Q1), a second capacitor (C2), a first operational amplifier (A1) and an amplifying signal output circuit (3). Two ends of the first capacitor (C1) are connected with the infrared sensor (J1) and the base electrode of the first audion (Q1) respectively; the emitting electrode of the first audion (Q1) is grounded; two ends of the second capacitor (C2) are connected with the collector electrode of the first audion (Q1) and the in-phase input end of the first operational amplifier (A1) respectively; the amplifying signal output circuit (3) is connected with the output end of the first operational amplifier (A1). When being applied to a transformer anti-theft system, the circuit of amplifying the signal in the transformer anti-theft monitoring system can amplify a signal collected by the infrared sensor (J1), and therefore the monitoring system in the transformer anti-theft system can make right judgment, and accordingly normal application of the transformer anti-theft system can be guaranteed and anti-theft performance is strengthened.

Description

technical field [0001] The invention relates to an anti-theft system, in particular to a circuit for amplifying signals in a transformer anti-theft monitoring system. Background technique [0002] In recent years, the theft of power facilities has occurred frequently, which not only threatens the safe operation of the power grid, but also seriously affects industrial and agricultural production and people's daily electricity consumption. In order to ensure the reliable operation of the power grid, improve the anti-theft performance of the power facilities themselves, and minimize the theft of power facilities, this has become a problem that people generally pay attention to. [0003] In the theft of power facilities, the proportion of stealing the whole transformer or stealing the copper core of the transformer is relatively high. Therefore, solving the problem of transformer theft has become an important link to prevent the theft of power facilities. Transformer anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/19
Inventor 高宏宇曾嵘刘进朝钟翼罗怡罗涛张宗刚
Owner CHENGDU RONGYAO TECH
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