EFFICIENT CONTACTLESS TACHOMETER USING ATMEGA AND IR SENSOR TECHNOLOGY

Abstract

The paper presents the design and implementation of an efficient contactless tachometer utilizing Atmega microcontroller and IR sensor technology. The tachometer serves as a crucial device for measuring the rotational speed of shafts or wheels in various applications, including automotive, industrial, and robotics. By integrating Atmega microcontroller and IR sensor technology, the system offers a costeffective and reliable solution for precise speed measurement without direct contact with the rotating object. The principle of operation involves the IR sensor detecting reflective markers attached to the rotating surface, enabling accurate speed calculation based on the time interval between marker detections. The hardware setup consists of the Atmega microcontroller, IR sensor module, reflective markers, and optional display unit, providing flexibility and scalability for different implementation scenarios. Software development encompasses initializing GPIO pins, configuring interrupt routines, implementing timer modules, and handling speed calculation and display updates. Performance evaluation demonstrates the system's accuracy, response time, and reliability under various operating conditions. This contactless tachometer offers advancements in speed sensing technology, contributing to enhanced performance monitoring, control, and maintenance in diverse industrial and automotive applications.