一种新型矿用锚索(杆)静态电阻应变仪的研究

摘要

为减少和预防煤矿冒顶事故的发生,要对巷道顶板受力进行监测.介绍了一种以单片机为主控模块,采用独特的平衡电桥臂结构并选用高精度运算放大器进行信号调理的新型矿用锚索(杆)静态电阻应变仪,它具有数据采集、存储、查询等功能,并以精度高、功耗低、操作简便、抗干扰能力强等特点,为从事巷道支护和锚固的工程人员提供了可靠的测试手段和技术保障.%In order to reduce and prevent the coal mine roof-fall accidents, to monitor stress of roof in tunnel ia necessary, introduces A new type of static resistance strain gauge of mining anchor cable(roof bolt),using single-chip microcomputer as the main control module, adopting an unique balance bridge arm structure and choosing high precision operation amplifiers for signal conditioning. The gauge has realized data acquisition,storage,inquires and other functions as well as high precision,low power consumption,easy operation,anti-interference ability and other characteristics. It provides reliable test method and technical support for engineers who engaged in tunnel supporting and tunnel anchoring.