Dual-mode digital revolution counter

Author

Stojkovic, Nino ; Stare, Zoran ; Mijat, Neven

Author_Institution

Fac. of Electr. Eng. & Comput., Zagreb Univ., Croatia

Volume

2

fYear

2001

fDate

2001

Firstpage

950

Abstract

Revolution speed measurement methods are analyzed. Three different measurement methods are presented and appropriate resolutions and relative errors are calculated The method which measures the time between two pulses gives the best results for slow rotation speeds. The method which counts the number of pulses in a fixed time window gives better results for high rotation speeds. Measurement optimization is done by measuring in two modes corresponding to the previous methods and the relative error is significantly decreased. A revolution counter is realized for measuring rotation speeds in the range 10-9999 r.p.m. with a sensor which gives one pulse per revolution. In the entire range the resolution of 1 r.p.m. is displayed. A microcontroller is used for switching between the measurement modes as well as for the rotation speed calculation and displaying

Keywords

angular velocity measurement; digital instrumentation; measurement errors; portable instruments; dual-mode digital revolution counter; errors; high rotation speeds; measurement modes; measurement optimization; microcontroller; revolution speed measurement methods; rotation speed calculation; rotation speed display; sensor; slow rotation speeds; Counting circuits; Frequency measurement; Measurement errors; Microcontrollers; Optimization methods; Pulse measurements; Rotation measurement; Time measurement; Transducers; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928219

Filename

928219