A Data Transmission Algorithm Based on Dynamic Grid Division for Coal Goaf Temperature Monitoring
Qingsong Hu, Lixin Wu, Fei Geng, Can Cao · Mathematical Problems in Engineering · 2014
WSN (wireless sensor network) is a perfect tool of temperature monitoring in coal goaf. Based on the three‐zone theory of goaf, the GtmWSN model is proposed, and its dynamic features are analyzed. Accordingly, a data transmission scheme, named DTDGD, is worked out. Firstly, sink nodes conduct dynamic grid division on the GtmWSN according to virtual semicircle. Secondly, each node will confirm to which grid it belongs based on grid number. Finally, data will be delivered to sink nodes with greedy forward and hole avoidance. Simulation results and field data showed that the GtmWSN and DTDGD satisfied the lifetime need of goaf temperature monitoring.