Transmit power optimization control method for a mechanical vibration wireless sensor network with a lot of transmission data

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (17) : 275-280.

ZHU Liangliang, TANG Baoping, HUANG Yi，DENG Lei

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Abstract

Aiming at the problem of a mechanical vibration wireless sensor network’s collection node using the maximum transmit power to transmit a lot of data and cause high transmission energy consumption, a transmit power optimization control method for this network was proposed. Firstly, statistical tests were conducted to determine discrete relations among link quality indicator (LQI), packet loss retransmission rate, node transmit power and energy consumption required to transmit a single data packet, as well as mathematical model types of node transmit power and LQI. Then, the least squares method was used to fit these discrete data, and construct the relation model between node transmit power and transmission energy consumption. Finally, this relation model was optimized to obtain the transmit power corresponding to the minimum power consumption. Thus, before each time to transmit data, the collection node only needed to transmit a very small number of data packets, and then the model was used to reoptimize and update the transmit power. Test results showed that the proposed method can optimally control the transmit power to reduce the transmission energy consumption of mechanical vibration wireless sensor network.

Key words

mechanical vibration monitoring / wireless sensor networks (WSNs) / transmit power / link quality indication (LQI) / packet loss retransmission rate / transmission energy consumption

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ZHU Liangliang, TANG Baoping, HUANG Yi，DENG Lei. Transmit power optimization control method for a mechanical vibration wireless sensor network with a lot of transmission data[J]. Journal of Vibration and Shock, 2020, 39(17): 275-280

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