Exploration on Signal Processing Performance of Wireless Sensor in Electromagnetic Interference Environment

Abstract

In order to deeply analyze the performance of Electromagnetic Field (EMF) on wireless sensor Signal Processing (SP), this paper first examines the influencing factors of wireless sensor SP performance based on the relevant theories of EMF and wireless sensor. Then, it discusses the influence of EMF on wireless sensor information Transmission and Reception (T & R) time, Package Reception Rate (PRR), and communication throughput. Furthermore, the Packet Loss Rate (PLR) and Bit Error Rate (BER) of the sensor are described, and finally, a conclusion is drawn. The research findings are as follows. This paper makes a statistical study on whether the wireless sensor is disturbed by EMI from three aspects (wireless sensor’s information T & R time, PLR, and communication throughput). In any case, EMF will prolong the wireless sensor’s information T & R time and reduce the PRR and communication throughput. When the distance between the transmitter and the receiver is set to 5 m, the change of field intensity at the transmitter significantly impacts the BER but has little impact on the PLR. However, when the field intensity of the transmitter and the receiver is the same, PLR and BER show no evident difference. Therefore, this paper studies the SP performance of the wireless sensor in the EMI environment, which provides an excellent reference significance for the rapid development of wireless sensors in the future.

State Evaluation of Self-Powered Wireless Sensors Based on a Fuzzy Comprehensive Evaluation Model

“…At present, most environmental micro-energy collectors mainly rely on mechanical motion for energy collection, and they may inevitably suffer mechanical damage or even failure during long-term use [11], leading to a decrease in the reliability of energy collection. Self-powered sensors typically require long-term use in environments with a strong electromagnetic [12], humidity [13], and high temperature [14]. Energy management circuits, due to their electrical characteristics, may suffer certain harm when used in harsh environments for a long time, thereby reducing the energy conversion efficiency of energy management circuits [15] and making the output power unstable [16].…”