Application of piezoelectric self powered wireless sensor in CCAL vibration environment monitoring

Abstract

With the growth of the economy and social progress, people's requirements for mechanical equipment are becoming higher and higher, and the complexity of mechanical equipment is also increasing. To improve the safety and reliability of mechanical equipment, the establishment of Wireless Sensor Network (WSN) with the function of monitoring and self energy supply in vibration environment is an effective way to solve this problem. This study presents a piezoelectric self-powered wireless sensor monitoring system with a piezoelectric self-powered circuit model, and utilizes the FFT algorithm to reduce power consumption and achieve a sleep-wake-sleep cycle intermittent periodic operation mechanism for low-power devices. The results show that the charging speed of the PISS structure is 2.4 %, 65.8 %, and 80 % faster than the standard, SISS, and SCE structures, respectively. Compared with the triangular cantilever, the output voltage and output power of the rectangular cantilever have increased by 59.5 % and 80.9 %, respectively. When the acceleration is 1 g, the output power and output voltage are 0.5 mW and 6 V, respectively. When the acceleration is 2 g, the output power and output voltage are 2.2 mW and 12 V, respectively. The above results indicate that the piezoelectric self-powered wireless sensor monitoring system in this study has a certain reference value in the field of self-powered wireless sensors.