Design and numerical analysis of a piezoelectric wind speed sensor
Subject Areas : Journal of New Applied and Computational Findings in Mechanical SystemsFarshad Nikfar 1 , Hesam Makvandi 2 , Sayed Ali Marashi 3
1 - Department of Mechatronic engineering, Arv.C., Islamic Azad University, Abadan, Iran
2 - Department of Mechatronic engineering, Arv.C., Islamic Azad University, Abadan, Iran
3 -
Keywords: Anemometer, piezoelectric, auxetic structure, increased accuracy,
Abstract :
Anemometer actually converts the wind flow around it into a standard electrical signal and transmits it to a meteorological data logger or a display. One of the problems in using conventional anemometers in modern systems is the large size and high energy consumption of these types of sensors, which makes their use in microsystems and systems with micro dimensions difficult and sometimes impossible. For example, in data-collecting drones that operate automatically and independently of the user, awareness of weather conditions without direct communication with the center is of great importance for the stability of the system, and the use of wind speed sensors in such devices is very vital. Given the aerodynamic limitations and the limitations of the energy supply of these types of devices, the use of sensors with small dimensions and low energy consumption is mandatory in them, and the use of piezoelectric sensors is well justified in these devices. In this research, a high-precision piezoelectric sensor sample was designed and analyzed using the Abaqus finite element software. In order to increase the accuracy of this type of sensor, auxetic structures were used. The results showed that with the help of a suitable auxetic structure, the output potential of the sensor can be increased by 33%.
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