Structural Failure Detection Using Wireless Transmission Rate From Piezoelectric Energy Harvesters

This article presents a new self-powered wireless failure detection method that uses different signal transmission rates from piezoelectric energy harvesters. Reliable sensor network has been challenging due to the power supply issue, often covered by batteries need regular replacement. Piezoelectric harvesting is an excellent option sensors in vibrational environment, but level limited input energy. In this article, we introduce strategy multifunctional material for vibration sensing and harvesting. That is, when stronger strain higher, produces higher voltage, power. Different multiple used structural failure. We design simple management circuit saves proportional voltage so patch with can transmit more frequent signals (higher rate). To store power, composed of full-bridge rectifier, single pole double throw switch, comparator hysteresis, transmitter (Zigbee). The performance investigated case study monitors screw joint vibrating plate. Reliability-based optimization conducted determine terms number sizes (PZT) patches. test results show proposed system successfully powers using ultra-low scale PZT (microwatt) detect combination