Multi-channel data transmission method for mechanical wireless sensor networks based on hybrid topology

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (4) : 28-34.

Zeng Chao，Tang Baoping，Deng Lei，Xiao Xin

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Abstract

Aiming at the problems of machine vibration wireless sensor networks node with narrow bandwidth has low network transmission rate and poor real-time capability, especially in mass raw data transmission requirements, a Multi-channel Data Transmission method based on tree-star Hybrid Topology (MDTHT_WJ) is proposed. Firstly, to avoid adjacent channel interference affect parallel communication, allocate channels for each wireless sensor network node with minimizing inter-tree communication interference, each node forms a tree-star hybrid topology network with allocated channel for data transmission after synchronous data acquisition. Then, handshake mechanism and preemptive priority mechanism is utilized to solve network partitions problem. Finally, the network short address of each data acquisition node is regarded as scheduling information, routers broadcast the scheduling information with beacons, and each data acquisition node decides to whether transmit data or sleep according to the scheduling information, realizing the time-scheduled inner-tree communication with minimizing power consumption. Comparative experiment with carrier sense multiple access with collision avoidance is carried out and experiment results indicate that the network transmission rate of machine vibration wireless sensor networks can be improved effectively by this method.

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machine vibration monitoring / wireless sensor networks / multi-channel / data transmission

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Zeng Chao，Tang Baoping，Deng Lei，Xiao Xin. Multi-channel data transmission method for mechanical wireless sensor networks based on hybrid topology[J]. Journal of Vibration and Shock, 2018, 37(4): 28-34

References

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