电容式矿用馈电状态传感器研究

The Research of Capacitance Mining Feedback Electricity State Transducer

为了进一步提高馈电状态传感器的性能,通过对馈电状态传感器的理论探索和现有应用的研究,根据《矿井安全监控新标准、新规程汇编》的要求[1],研制了一种新型馈电状态传感器,它是利用电容检测原理、场效应管作为传感器的敏感元件,来监测电缆芯线对地电场的状态,从而间接检测矿井电缆的馈电状态。与负载是否工作,电缆有无电流流过无关。只要电缆芯线带电,则输出馈电状态;反之,输出非馈电状态。它具有结构简单、成本低、可靠性高、灵敏度高、易于维护、更换方便等特点。

For the sake of more enhancing capabilities of feedback electricity transducer, based on the capacitance inspection principle, a new type feedback electricity transducer, was developed, adopting field effect transistor as sense organ of transducer, supervising the states of electric field between the cable-line and the ground. It can inspect the feedback electricity states of mine well cable-line. This kink of inspecting way is irrespective with load whether it is working or not and cable-line whether it has electrical current or not. If only when cable-line has electricity, then transducer output the state of feedback electricity or else the none-state of feedback electricity. This transducer is in accordance with The Compilation of New Standards and New Regulations in Mine Security Monitoring. Its characteristics are simple-structure, lowcost, high-reliability, high-sensitivity, easy-maintenance, convenient-replacing, etc.