Technology of self-powered sensors:applications and challenges
Sensing technology has been an integral components of modern technologies such as Internet of Things,and 5G,however,the supplying energy of sensor affects its sustainable operation.Therefore,self-powered sensor harvesting ambient energy from environment had capture attention from many scholars in recent years.Self-powered sensor could convert available energy into electrical energy from the environment,powering sensor node.The methods of energy converting such as electromagnetic generator、triboelectric nanogenerator、piezoelectric generator、dielectric elastomer generator、thermoelectric generator were introduced.The energy management circuits are reviewed,which was critical technology for self-powered sensor.The applications such as environmental monitoring,biomedical diagnostics,smart homes of self-powered sensor and challenges discussed.At the end,we summarized the advantages and challenges of self-powered sensors.We believe that self-powered sensors will play an important role in future technological development.