Experiment on wireless sensors network based on double cluster head clustering routing algorithm of energy heterogeneous in paddy field

Abstract: Aiming at the problem that the cluster head nodes died beforehand because of the exhaustion of energy in the cluster structure of at wireless sensor network, an energy-heterogeneous double cluster head routing algorithm (EHDCA) was proposed, which was suitable for a hybrid antenna networking communication test in the field. First, the threshold value was determined through evaluating the average remaining energy of the whole network, which was intended for selecting the main cluster head nodes (MCH). Then, the rest of the nodes in a cluster were chosen according to acknowledged signal strength acquired from other nodes' response to MCH. Lastly, a node that had the maximum energy in the cluster was selected to be the vice cluster head node (VCH). The VCH was responsible for collecting and fusing the data of member nodes. It shared energy consumption of the MCH and decreased the death probability of MCH. EHDCA was simulated in an energy-heterogeneous network, in which the average node energy was equal to that of homogeneous network where all nodes energy was kept the same in balance. Simulation results showed, compared to LEACH in an energy-homogeneous network, that the network stable period increased by 12.1% respectively in an energy-heterogeneous network. Directional antenna (model: TDJ-0825BKM1) associated with omni-directional antenna were applied for conducting hybrid antenna communication research in field while the wireless communication module used an RF905 RF chip to test the coverage of a directional horizontal antenna. Network simulation on the basis of the coverage of a directional horizontal antenna results showed that, compared to LEACH, LEACH-E, DEEC and EADC, the network stable period ratio was increased by 46%, 47%, 58%, and 11%.