Research Of Wireless Ad-hoc Temperature Measurement System Used In Goaf Based On ZigBee

Autoignition of coal is one of the causes of major disasters in coal mines, which not only causes financial losses, but also brings potential perils in the process of coal’s production every year. Accordingly, it is particularly important to monitor the phenomenon of coal’s autoignition at an early time. Currently, among many methods to predict coal’s autoignition, temperature measurement is relatively more direct and accurate. In this paper, we propose a new method of combining the wireless communication technology with temperature measurement to settle the difficulty of designing lines. But we can not ignore its instability and low monitoring range.According to the requirement of monitoring temperature in goaf, a system including CAN-BUS, ZigBee, embedded computer control technology, sensor and database technology had been designed. By applying temperature sensors, terminal spots were used to collect temperature values which were gathered at underground sub-stations by wireless communication technology and then the values were transferred to ground monitoring center through CAN-BUS. Every segment of this system has been presented in this paper.The whole system framework, systematic performance requirements, working theories and methods had been analyzed and wireless terminal spots used to measure temperature and gateway and PC monitoring software had been designed, too. Multiple experiments tested the performance of terminal spots of wireless communication technology and the results of the field industrial experiments indicated that the system can predict autoignition of coal by measuring the temperature with high accuracy and durability.