Shengbo Hu

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—It is infeasible to deploy dense sensor nodes with power supply for methane sensor network in laneway, because the laneway is narrow, and its environment with excessive dirt, dust, moisture is harsh. So, it is urgent for WSN in coal mine laneway to lower the energy cost. First, a hierarchy methane sensor networks topology and deployment is described in(More)
It is very important to detect a collapse hole for coal mine workers. The possibility of detecting the collapse hole using WSN is presented, because the tunnel in coal mine is narrow and the poor working condition. Comparing three types of the hole detection methods, it is seen that the connectivity based methods are used to detect coal mine collapse better(More)
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