CCTEG Coal Mining Research Institute
Mining and Design Branch, China Coal Research Institute

针对当前集中式直流电法仪器在煤矿水文地质勘探中应用范围窄、自动化程度低等局限性,设计了一款基于ARM与FPGA的矿用多通道在线式高密度电法仪系统。该系统设计了六通道电法仪分站,使用高性能ARM处理器实现电法数据的传输和信号的控制功能,采用24位AD和FPGA可编程逻辑芯片对现场电极信号进行高精度采样和参数配置,通过IGBT电路在电法仪分站设计了本质安全性高压驱动电路,电法仪从机主控电路采用低功耗微处理器STM32L431,使用微型继电器控制电极实现灵活配置与控制,最终实现多通道自动跑极操作。通过系统软件可以远程控制电法仪系统在煤炭矿井环境下进行参数设置、传感器数据采集、后期的数据反演等操作,实现了地质勘探与矿井探水的整个工程应用。系统实际测试结果表明该系统具有数据采样精确、抗干扰能力强、应用效率高、数据反演结果准确等特点,满足了在煤矿水文地质中应用直流电法勘探的需要。

A multi-channel online high-density electrical method instrument system for mining based on ARM and FPGA is designed to address the limitations of narrow application range and low automation level of current centralized DC electrical method instruments in coal mine hydrogeological exploration. The system features a six channel electrical method instrument substation, which uses a high-performance ARM processor to transmit electrical data and control signals. A bit AD and FPGA programmable logic chip are used to perform high-precision sampling and parameter configuration of on-site electrode signals. An intrinsic safety high-voltage drive circuit is designed at the electrical method instrument substation through an IGBT circuit. The main control circuit of the electrical method instrument slave adopts a low-power microprocessor STM32L431, and a micro relay is used to for flexible configuration and control of electrodes, ultimately achieving multi - channel automatic electrode changing. Using system software, the electrical instrument system can be remotely controlled to set parameters, collect sensor data, and perform data inversion in the coal mine environment, achieving the entire engineering application of geological exploration and mine water exploration. The actual test results of the system indicate that it has the characteristics of accurate data sampling, strong anti-interference performance, high application efficiency, and accurate data inversion results, which meet the needs of applying DC electrical exploration method in coal mine hydrogeology survey.

孙学波.基于ARM和FPGA的矿用多通道三维高密度电法仪开发与设计[J].煤炭工程,2024,56(11):211-218.