煤矿高密度电阻率仪的设计与实现

 为了探测危害煤矿安全生产的地质体，如断层、褶曲、煤层变薄区、陷落柱等，研制了一套符合防爆要求的分布式煤矿高密度电阻率仪。仪器中设计了电流、电压两个各自独立的通道，每通道设计两级低通有源滤波和两级工频陷波，以及高分辨24位模数转换器，提高了抗干扰能力和测量精度。设计了轻便智能分布式电极系，可灵活组成二维测量系统，施工方便。整机按照防爆要求设计，适合煤矿井下勘测。

THE DESIGN AND IMPLEMENTATION OF THE HIGH-DENSITY RESISTIVITY INSTRUMENT FOR COAL MINE

In order to probe into harmful geological bodies such as faults,folds,seam-thinning areas,collapse columns for the safety of coal mine production,the author designed and developed a high-density resistivity instrument in accord with the requirements for coal mine explosion-proof.Two independent channels,i.e.,current channel and voltage channel,were designed.Each channel has two low-pass active filters and two notch frequency filters.High-resolution 24-bit ADCs can improve anti-interference capability and me...