Strategies for Sensor Node Deployment Based on Spatial Correlation for Methane Sensor Network

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 this paper. Then, a spatial correlation model for saving significant energy in methane sensor networks is given, and a computational method of distortion measure for MMC is derived. Using the computational method, the strategies for deploying sensor nodes for saving significant energy are (1) Selecting the appropriate number of contributed nodes, the optimal trade-off between power constraints and distortion measure can be achieved. (2) Locating contributed sensor nodes, minimum methane estimation distortion can be achieved.