Wireless And Self-Powered Environmental Monitoring System Based On Triboelectric Nanogenerator

The construction of the Internet of Things relies on the monitoring of various parameters in the environment.This depends on a large variety of sensors.Most of the traditional sensors need external power supply,which seriously limits the development of the Internet of Things.Wireless and self-powered monitoring network node based on TENG(triboelectric nanogenerator)is capable of converting energy from the surrounding environment into electrical energy,so as to realizing active sensing without the external power supply.It can also be used to build wireless self-powered environmental monitoring systems.The use of wireless self-driven monitoring technology based on TENG can not only solve global energy shortages and environmental pollution problems,but also promote the development of personal portable electronic products and the advancement of wireless sensor networks.Based on TENG,we design several wireless self-powered environmental monitoring systems with different structures,different energy collection methodologies and different wireless communication modes.The TENG-based wireless sensing network nodes will has a significant influence on our lifestyle in the near future.The main points of this paper are as follows:1.Meteorologic monitoring plays a key role on weather forecast and disaster warning and deeply relies on various sensor networks.It is an optimal choice that grabbing the environmental energy around sensors for driving sensor network.Here,we demonstrate a self-powered,wireless,remote meteorologic monitoring system based on an innovative TENG(triboelectric nanogenerator).The TENG has been proved capable of scavenging wind energy and can be employed for self-powered,wireless meteorologic sounding.This work not only promotes the development of renewable energy harvesting,but also exploits and enriches promising applications based on TENGs for self-powered,wireless,remote sensing.2.Establishing a smart sensing system is desirable but challenging as the conventional devices require an external battery or power grid which cruelly limits its applications,especially in remote areas or at the condition of power supply with difficulty.Here,we report a smart self-powered sensing network based on a hybrid nanogenerator(NG)that can harvest wind energy and solar energy simultaneously or individually to serve as a sustainable power source.A transparent flag-like triboelectric nanogenerator(TENG)plays a core role with both the output voltage and current positively proportional to the wind speed and the number of integrated units.By subtly designing,the bottom solar cell can absorb sunshine insusceptibly.The hybrid NG can not only be used as an active wind speed detection,but also be employed to construct a self-powered wireless temperature sensing system,further achieving multifunctional monitoring and sensing.This work promotes the development of TENG-based renewable energy harvesting and puts forward the smart sensing network node that realizes multifunctional monitoring by scavenging environmental energy.3.Harvesting energy from water is desirable and promising for its universal availability and wide abundance on the earth.Here,we introduce a triboelectric nanogenerator(TENG)with advantages of simple configuration and low cost,which not only can get energy from the water,but also can actively detect the location and velocity of the flowing water according to the electric output of the TENG.Besides,we can adjust the structure of the TENG to harvest wind energy and realize self-powered rotating state monitoring.Moreover,our desirable TENG can be utilized to construct a self-powered visible light communication(VLC)system for active monitoring,which can be used for wireless data transmission without an external power source.This work promotes the development of renewable energy harvesting based on TENGs,and has a great potential application in self-powered wireless monitoring.