Research on WSN Nodes Location Technology in Coal Mine

For the purpose of enhance the security of poor working in coal mine, it's important to study on the problem of location and tracking for keeping mining personnel and down hole equipments safe. We put forward wireless sensor network underground location algorithm which is based on the superposition of RSSI and DV-Hop. This algorithm makes up for the shortage of RSSI algorithm and DV-Hop algorithm. This algorithm helps enhance measuring accuracy and reduce const measurement. We illustrate this algorithm through combining the theory analysis with the examples. In this example, it is obvious that this conventional algorithm is less precise than the algorithm which is advanced in our paper This technology could also realize location of personnel and equipments underground.