A Real-Time Differential Anti Strong Interference Tachometer Based on Arduino

Abstract

This paper introduced a real-time differential tachometer based on Arduino which can remove interference noise pulse. Attached on high speed rotary parts, the Hall encoders count the number of turns per second. The pulse signal can be detected and identified by Aduino UNO microcontroller interrupt and transfer to personal computer. Two sets works synchronously at the same place, one accepts the pulse signal with encoder input and another accepts just noise pulse. With differential methods, the noise pulse can be removed and the tachometer works very well in strong interference situation.