Design of reliable control software for wireless sensor network testbed

In the past decade, the research of wireless sensor network (WSN) has aroused great interest from academia, industry and government. The WSN testbed has become the key of various development projects by conducting more authentic and reliable experiments in capturing the underlying hardware, software, algorithms and dynamics of WSN. These experiments need to solve several problems, such as experimental reliability, resource efficiency, and sustainable maintenance. Due to the problems of wireless sensor networks and the diversity of applications, the wireless sensor network test bench needs to flexibly support various network topologies and be robust to achieve reliable experimental results. This puts forward practical requirements for the reliability of control software. This paper designs a stable state machine to simplify the experiment, remote health diagnosis during operation, automatic replacement of fault nodes and TDMA data log transmission to improve the reliable operation of control software.