Design Of Channel Model For Wireless Underground Sensor Network Using Zigbee

In this paper an attempt is made to find the sand and clay percentage of the selected region by performing various tests like: sieve method and hydrometer. The readings of the sand, clay and silt present in the soil sample are calculated. The water content of the soil for different layers of the soil samplesis identified and the density of soil for the region selected is calibrated. The zigbee s2 (mesh) is used as the mote; the sensor has a good receiving capability upto -98dB, an Arduino is used at the receiving end. There are 3 motes used, one of them at the above ground, which was configured as the coordinator, and the other two underground sensors were made as the router, this was able to communicate in a mesh network. Then the motes were connected to the moisture sensor and temperature sensor, and the reading was taken wirelessly by burying inside the ground upto 40cm from the ground surface.