Scanning transient electromagnetic detection system

Abstract

The invention discloses a scanning transient electromagnetic detection system, which can carry out continuous data collection, has abundant information, high resolution, and can greatly improve work efficiency. The system includes a host; the host is powered by a power supply, and the host is mainly composed of a CPU, a pulse output stage and a pulse receiving stage; the pulse output stage includes a decoding logic, a waveform synthesis bridge, and a freewheeling absorption circuit, pulse output terminal; wherein the CPU controls the decoding logic, the output drive circuit of the waveform synthesis bridge output circuit; the energy stored in the transmitting coil is accelerated by the freewheeling absorption circuit when it is turned off; the pulse receiving stage includes Input amplifier, notch filter, band-pass filter and ADC converter; the received signal is transmitted to the host through the input amplifier, notch filter, band-pass filter and ADC converter in turn for final digital signal processing.

Description

technical field [0001] The invention relates to an advanced geological prediction system based on the transient electromagnetic method, in particular to a scanning transient electromagnetic detection system. Background technique [0002] Tunnel engineering geological disasters are the key factors restricting tunnel construction. Often due to the unknown geological conditions ahead of tunnel excavation, unpredictable geological disasters often occur, such as water inrush, mud inrush, collapse, etc., which bring serious safety problems to tunnel construction. and significant economic losses. In the process of underground coal mining, geological disasters such as water inrush in roadways are often encountered, resulting in the depletion of water sources in the mining area and the destruction of water and ecological environment. Therefore, water inrush and permeation accidents in tunnels or tunnels have brought major disasters and economic losses to construction and production,...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above problems, to provide a scanning transient electromagnetic detection system, which is improved on the basis of the existing transient electromagnetic detection system, combined with the existing transient electromagnetic instrument system Some features and advantages of it, it has high accuracy and resolution, good stability, and rich information, which improves the incomplete shutdown of the power supply current and the phenomenon of current tail flicking and current oscillation after power failure, and can more accurately predict the future Unfavorable geological bodies and water-bearing formations

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