Frequency hopping techniques for reliable geomechanical data transmission

摘要

Underground mining operations require continuous monitoring of various geomechanical parameters of evaluating the stability of various operations. Moreover, it is mandatory. The underground environment is hostile and humid. It is not possible to keep computerized continuous monitoring station near the sensors at underground. The environment is not compatible. Thus the computerized continuous monitoring system on surface is around 4 to 5 km from the working face or from the geomechanical parameters detection system at underground. Therefore a reliable data transmission plays a vital role in evaluation of various underground operations. Hence an innovative wireless method has been developed and successfully implemented in Indian mines for the first time. The method was successfully implemented for monitoring performance on longwall powered supports. This paper deals with the successful implementation of the frequency hopping technology for long distance transmission of geomechanical data.