Isolated-driven control circuit for mining focused dual-frequency intensification-polarization instrument

Abstract

The invention discloses an isolated-driven control circuit for mining focused dual-frequency intensification-polarization instrument comprising a comparison circuit, an AND gate circuit, a gating circuit, a current extending circuit, an isolation output circuit, a voltage-dividing circuit and an isolated power supply. The comparison circuit, the AND gate circuit, the gating circuit, the current extending circuit, and the isolation output circuit are connected successively; the isolated power supply provides isolated voltages for the front end and the rear end of the isolation output circuit; and a reference comparison voltage is provided for the comparison circuit by the voltage-dividing circuit. With the isolated-driven control circuit, a drive control signal needed by an inverter circuit of the mining focused dual-frequency intensification-polarization instrument transmitting system can be generated.

Description

technical field [0001] The invention relates to a drive control circuit of an electrical prospecting instrument, in particular to an isolation drive control circuit of a mine-used focusing dual-frequency IP instrument. Background technique [0002] In order to ensure the safe production of personnel and machines in the coal mine working face, the principle of "forecasting and forecasting, all digging must be explored, first explored and then excavated, and first treated before mining" must be followed during the excavation process. At present, the advanced detection methods commonly used in underground coal mines mainly have outstanding problems such as low detection accuracy, poor real-time performance, poor directionality, low efficiency, high cost, poor anti-interference ability, and excavation separation, which cannot fully meet the requirements of advanced detection for excavation. . Therefore, it is of great significance to study an advanced detection method with simp...

AI Technical Summary

Problems solved by technology

[0005] (1) The software programming method generally adopts the delay method to generate the drive control signal. Since the signal is a high and low frequency combined square wave, the waveform is complex and the accuracy is high, this method is prone to errors;

[0006] (2) The drive control signal generation circuit of the receiving device is directly coupled with the full-bridge inverter circuit of the transmitting device, which may cause interference from the strong electrical signal of the transmitting device to the receiving device

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