Circuit of amplifying signal in transformer anti-theft monitoring system

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...

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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

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