Abstract
Triboelectric nanogenerators (TENGs) have excellent properties in harvesting tiny environmental energy and self-powered sensor systems with extensive application prospects. Here, we report a high sensitivity self-powered wind speed sensor based on triboelectric nanogenerators (TENGs). The sensor consists of the upper and lower two identical TENGs. The output electrical signal of each TENG can be used to detect wind speed so that we can make sure that the measurement is correct by two TENGs. We study the influence of different geometrical parameters on its sensitivity and then select a set of parameters with a relatively good output electrical signal. The sensitivity of the wind speed sensor with this set of parameters is 1.79 μA/(m/s) under a wind speed range from 15 m/s to 25 m/s. The sensor can light 50 LEDs at the wind speed of 15 m/s. This work not only advances the development of self-powered wind sensor systems but also promotes the application of wind speed sensing.
Highlights
College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China; Abstract: Triboelectric nanogenerators (TENGs) have excellent properties in harvesting tiny environmental energy and self-powered sensor systems with extensive application prospects
The wind sensor based on electromagnetic induction has many disadvantages such as complex structure, safety risk, and high cost, which restricts its application on small self-powered sensors [19,20]
This work promotes the potential application of TENGs in wind energy harvesting and related self-powered sensor systems
Summary
There is often a large amount of unavailable environmental energy, due to the difficult harvesting in our daily life [1]. The wind sensor based on electromagnetic induction has many disadvantages such as complex structure, safety risk, and high cost, which restricts its application on small self-powered sensors [19,20]. Compared with traditional battery energy, the self-powered sensors based on TENGs have the outstanding characteristics of low cost, simple preparation process, a wide selection of materials, and high energy conversion efficiency [22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39]. We propose a self-powered wind speed sensor based on TENGs with a trapezoidal structure. This work promotes the potential application of TENGs in wind energy harvesting and related self-powered sensor systems
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