煤矿井下电磁环境测试方法研究

为了分析煤矿井下电磁环境对矿用电子设备工作安全性的影响,研究井下电磁辐射现场测试方法。测试结果表明:煤矿井下电磁环境具有区域性,典型设备是其电磁特性的主要影响因素。架线电机车产生的电磁噪声覆盖的频段较宽,对井底车场电磁环境影响很大。矿用漏泄通信系统对井下电磁环境会产生一定的影响,变压器是井下变电所电磁环境的主要骚扰源。研究结果表明井下电磁环境现场测试方法具有一定的适用性,有助于确定井下电磁环境的严酷等级,为电子设备的抗干扰措施提供理论依据。

Test Method of Electromagnetic Environment in Coal Mine

To analyze the safety property of the electronic devices in mine electromagnetic environment,the electromagnetic field test method was studied.The experimental data show that the coal mine electro-magnetic environment is regional,and typical equipments are the main electromagnetic disturbance sources.The electromagnetic noise generated by electrical locomotive covers a wide spectrum and heavily affects the electromagnetic environment of mine shaft bottom.Meanwhile the mine leaky communication system also has a certain influence on the electromagnetic environment,and the transformers are the main electromagnetic interference sources to the mine substation.The results indicate that the field test method of electromagnetic environment in coal mine has a certain degree of application value,which helps determine the grade of electromagnetic environment and provide theoretical basis for making measures against electromagnetic interference.