WIND SPEED SENSOR BASED ON SLIDING TRIBOELECTRIC NANOGENERATOR

Document Type : Original Article

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Department of Production Engineering and Mechanical Design, Faculty of Engineering, Minia University, El-Minia, EGYPT.

Abstract

As we progress further and further into the 21st century, the need for more sustainable sensors in the new internet of things (IoT) era has become clear. In this paper, a cheap and effective self-powered sensor was made using commercial polyamide (PA) and polytetrafluoroethylene (PTFE). The sensor is based on the sliding mode triboelectric nanogenerator (TENG) and it consists of a rotating dielectric made of PTFE and stationary dielectric-electrode pairs made from PA and aluminum.
 
The sensor was found to be effective as a self-powered one, outputting a maximum voltage of 2.6 V at a 100 MΩ resistive load and a current of 0.0625 ηA at a 10 MΩ resistive load. The maximum power output was 0.145 ηW at a resistive load of 40 MΩ. Although the power output was low, the high voltage output confirmed its usability as a self-powered sensor. The TENG-based sensor was then calibrated and was found to have a voltage sensitivity of 0.3626 V / (ms-1) and a rotational speed sensitivity of 0.3083 rps / (ms-1). Having two wind-speed-dependent variables increase the reliability of the sensor. This sensor is promising as cheap alternative to the already present self-powered wind speed sensors.
 

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