An intelligent low-temperature grain storage system signal calibration circuit

Abstract

The invention discloses a signal calibration circuit of an intelligent low-temperature grain storage system. The device comprises a frequency acquisition circuit 1,a frequency acquisition circuit 2, afrequency modulation and amplitude modulation circuit and a filtering output circuit, the frequency acquisition circuit 1 and the frequency acquisition circuit 2 are used for respectively acquiring signal frequencies in an input end of a signal transmission channel for a control terminal to receive signals in the intelligent low-temperature grain storage system; the frequency modulation and amplitude modulation circuit uses a triode Q1 and a resistor R5; the capacitor C2 forms a delay circuit to divide the signal into two paths of signals; the filtering output circuit uses an inductor L2 anda capacitor C13; the capacitor C14 forms a filter circuit to be filtered and then output, namely a compensation signal of a signal in the input end of a signal transmission channel for receiving the signal by a control terminal in the intelligent low-temperature grain storage system, the signal in the signal transmission channel for receiving the signal by the control terminal in the intelligent low-temperature grain storage system can be automatically subjected to frequency modulation and calibration, and signal distortion is prevented.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to an intelligent low-temperature grain storage system signal calibration circuit. Background technique [0002] Grain storage work is closely related to the optimization and improvement of the quality of human life. With the continuous development of science and technology and the continuous improvement of people's living standards, higher requirements have been put forward for food safety control. With modern electronic technology and computer control Realize modern grain storage technology, among which the intelligent low-temperature grain storage system is the current key development direction, which improves the management efficiency of grain storage. However, in practical applications, the control terminal in the intelligent low-temperature grain storage system uses the signal transmission channel to receive signals Frequency hopping and attenuation of internal signals often ...

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Problems solved by technology

[0002] Grain storage work is closely related to the optimization and improvement of the quality of human life. With the continuous development of science and technology and the continuous improvement of people's living standards, higher requirements have been put forward for food safety control. With modern electronic technology and computer control Realize modern grain storage technology, among which the intelligent low-temperature grain storage system is the current key development direction, which improves the management efficiency of grain storage. However, in practical applications, the control terminal in the intelligent low-temperature grain storage system uses the signal transmission channel to receive signals Frequency hopping and attenuation of the internal signal often occur during transmission, which leads to signal distortion and causes the control terminal of the intelligent low-temperature grain storage system to issue wrong instructions, which seriously affects the popularization and use of the intelligent low-temperature grain storage system

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