基于工业以太网的顶板离层检测传感器设计

针对传统的顶板离层检测方法存在测量精度低、测量结果无法自动上传的问题,设计了一种基于工业以太网的顶板离层检测传感器。该传感器采用2个拉绳式位移传感器检测顶板离层的深部和浅部位移量,通过位移检测电路将拉绳式位移传感器输出的电流信号转换为电压信号,供单片机采样;单片机根据采样的电压值,分析计算深部和浅部位移,得到顶板离层量;计算结果通过以太网自动上传,供地面监控计算机分析使用。测试结果表明,该传感器可以实现顶板离层位移的精确测量,测量误差为±2.5%,并可以方便地上传测量结果。

Design of Detecting Sensor of Roof Separation Based on Industrial Ethernet

In view of problems of low measuring precision and no way to upload measuring result existed in troditional detection methods of roof separation,a detecting sensor of roof separation based on industrial Ethernet was designed.The sensor uses two draw-wire displacement sensors to detect deep displacement and shallow displacement of roof separation and uses displacement detection circuit to transform current signal output by the draw-wire displacement sensors to voltage signal for sampling by single-chip microcomputer.The single-chip microcomputer analyzes displacements of deep part and shallow part according to sampled voltage value to get roof separation value which is uploaded automatically through industrial Ethernet to surface monitoring computer.The test result shows that the sensor can realize accurate measurement of displacement of roof separation with ±2.5% measuring error and can upload measuring result easily.