Design of Self-powered Environment Monitoring Sensor Based on TEG and TENG

This paper designs a self-powered environmental monitoring sensor device based on Thermoelectric Power Generation(TEG) and Triboelectric Nanogenerator(TENG). The device is composed of an energy supply unit and an environmental monitoring sensor unit. The energy supply unit is composed of a TEG unit and the thin film flapping TENG unit. The environmental monitoring sensor unit monitors the wind speed and direction through the voltage generated by the thin film flapping TENG, and the voltage of the rain energy TENG represents the magnitude of rainfall. The thin film flapping type TENG in the energy supply part can achieve an output voltage of 244V and an output current of 35uA at a wind speed of 12m/s. The TEG unit can obtain an output voltage of 4.27V and an output current of 328mA at the hot end of 110°C. In the experiment, compared with a single unit, the charging voltage is increased by 93.3% and 28.9% in the process of charging the capacitor based on the high-current TEG and high-voltage TENG composite device. The composite energy harvesting device can successfully drive the circuit management unit and realize the self-supply of the environmental monitoring sensor unit.