Design of low energy consumption multi-channel wireless senor networks for monitoring mechanical vibration signals
Naji Ma, Ming Diao, Xiao Hu, Jian Feng Sun, Anchang Ma · Advanced science and technology letters · 2015
The single-channel wireless sensor networks (WSNs) exists the problem of low efficiency of monitoring data transmission, however the multichannel WSNs exists the problem of communication collision caused by the sensor node’s wireless channel competition. The paper at first introduces the causes of the above problems and selects a reasonable wireless channel resources allocation method of the multi-channel WSNs. Then to solve these questions, the theory of compressive sensing and spectrum sensing are adopted to improve the existing multi-channel WSNs. Finally, a new sensor node of the multi-channel WSNs is designed based on the above improvement. By analyzing the monitoring data of the field test, the improved multi-channel WSNs could complete monitoring mission efficiently and accurately, meanwhile it reduced power consumption of the WSNs effectively.