煤矿安全2024，Vol.55Issue(2)：204-210,7.DOI:10.13347/j.cnki.mkaq.20231019
自适应接地电阻的本安型电法监测场源信号发射装置设计
Design of intrinsically safe field source signal transmission device for electrical method monitoring system with adaptive grounding resistance
摘要
Abstract
Electrical monitoring technology is widely applied in mines with high risk of water inrush because of its high sensitivity to the change of coal resistivity.However,due to the complex working environment of the two lanes of the underground working face,the ground conditions between the different field source emission monitoring electrodes are quite different and change with time,so it is difficult to provide stable field source signals in the whole monitoring cycle.A negative feedback type intrinsically safe electric-al monitoring device based on STM32F407 is designed.The device can adapt to adjust the access resistance between different trans-mitting electrodes and has dual reliable intrinsically safe protection circuit.The maximum power stable transmission of the next source signal is realized under the inherent safety restriction condition,and the field source energy is maximized to load into the tar-get monitoring geological body to obtain the strongest possible field source response signal,improve the data acquisition quality of the electrical monitoring system and improve the accuracy of the inversion interpretation.关键词
矿井突水评价/煤岩电阻率/电法监测系统/水害风险/监测场源/STM32F4Key words
evaluation of mine water inrush/coal rock resistivity/electrical method monitoring system/water inrush risk/monitor-ing field source/STM32F4分类
矿业与冶金引用本文复制引用
王冰纯..自适应接地电阻的本安型电法监测场源信号发射装置设计[J].煤矿安全,2024,55(2):204-210,7.基金项目
国家自然科学基金面上资助项目(42274248) （42274248）
陕西省自然科学基础研究计划面上资助项目(2023-JC-YB-215) （2023-JC-YB-215）
天地科技股份有限公司科技创新创业资金专项资助项目(2022-3-TD-KJHZ001) （2022-3-TD-KJHZ001）
山西省揭榜招标资助项目(20201101009-04) （20201101009-04）
