Authors : Priyanshu Kumar Rouniyar; Sashank Shrestha; Ujjwal Raj poudel; Aship Chaudhary; Paras Panta; Aashutosh Chaudhary
Volume/Issue : Volume 7 - 2022, Issue 12 - December
Google Scholar : https://bit.ly/3IIfn9N
Scribd : https://bit.ly/3X455Z0
DOI : https://doi.org/10.5281/zenodo.7508726
The measurement of instantaneous torque in
terms of voltage displaying rotating speed in revolution per
minute (RPM) of a rotating shaft is known as a digital
tachometer. An infrared module is used as the input that
senses the interruption in terms of beam of rays caused by
rotating shaft, generating a pulse. The usual method of
counting pulse coming from the encoder in a fixed period
of time produces a high precision velocity estimate in the
high-speed range. The encoded signal is latched and
further sent to decoder that decodes the latched pulse i.e.
speed displayed in 7 segment display. This paper mainly
focuses on developing a contact-less digital tachometer of
maximum 3digit with the help of integrated circuits (ICs).