Design and implementation of ultrasonic anemometer

This paper deal with the design and implementation of low cost, indigenous 2-axis ultrasonic anemometer having real time SD card and Internet of Things (IOT) enabled data logging. Ultrasonic Anemometer is a measuring instrument which is capable of measuring wind velocity (i.e. both wind speed and direction) in a challenging environment like ladakh where conventional type anemometers are not working properly. Commercial Off-the-Shelf (COTS) component are used for the implementation which reduce the implementation cost and improve the efficiency. Wind velocity measurement is done using Time of Flight (TOF) concept, Threshold detection is used to detect the Ultrasonic signal. Arduino development board and Integrated Development Environment (IDE) is used for the implementation. Multisim by National Instrument is also used to design and simulate sub-component of receiver circuit like amplifiers and band pass filter. Internal timer of microcontroller is used to calculate the delay between the transmitted and received ultrasonic signal. SD card module and IOT module with Real Time Clock (RTC) module is used to store the wind data with timing information.