Parameter Extraction Circuit and Parameter Extraction Method of Broadcasting Wave Monitoring Receiver

Abstract

The invention provides a parameter extraction circuit for a broadcast supervision receiver and a parameter extraction method thereof, which belong to the field of communication and circuits. The parameter extraction circuit mainly comprises a power circuit, a detection circuit, a low-frequency amplifier circuit and a signal output circuit, wherein the power circuit provides power for the detection circuit, an operational amplifier circuit and the signal output circuit; the detection circuit receives target intermediate-frequency signals in need of parameter extraction and sequentially carries out rectification, signal amplification and filtering; signals after detection are inputted to the low-frequency amplifier circuit for low-frequency amplification; signals after low-frequency amplification are inputted to the signal output circuit; the signal output circuit processes the received signals and outputs audio signals, and the peak voltage, the valley voltage, and the mean voltage of detection signals after low-frequency amplification are outputted at the same time. The broadcast supervision receiver parameter extraction method comprises steps of signal input, rectification, signal amplification, filtering, low-frequency amplification, signal voltage extraction and audio output.

Description

technical field [0001] The invention relates to a parameter extraction circuit of a broadcast wave monitoring receiver and a parameter extraction method thereof, belonging to the communication field. Background technique [0002] With the increase of broadcasting programs and the rapid development of broadcasting technology, people have higher and higher requirements for the content of broadcasting programs, and the coverage of broadcasting stations is also increasing. There have been many major incidents of misbroadcasting and malicious propaganda of reactionary speeches in China. In addition, due to the lack of effective supervision methods for program content and sources, there are countless incidents of illegal advertisement insertion in remote areas. Surveillance has always been an issue that our country attaches great importance to. [0003] At present, there are more than 2,000 broadcasting organizations in China. In response to the management of so many broadcastin...

AI Technical Summary

Problems solved by technology

The monitoring accuracy is not high, and the monitoring data cannot be recorded in real time

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