Fault locating arithmetic for multi-source network cluster nodes based on comparison

On the basis of layer-built topology structure and one-to-many communication mode, a novel fault locating arithmetic based on comparison for multi-source network cluster nodes was presented to avoid fault node invalidation problem of wireless sensor networks. Mathematical model and the fault model were set up. Aiming at the locating model, the optimization process for the concentrative control of the cluster-heads was analyzed, and theoretical derivations were carried out to validate the availability and feasibility. Three cases of the diagnosis model, not changing network topology, changing network topology and larger network size, are simulated based on the evaluation criteria of fault locating arithmetic. Simulation results indicate that comparison-based cluster nodes fault diagnosis is characteristic of good diagnosis and expansibility, and system overhead and absolute error are much smaller than comparison-based system-level fault diagnosis.