Design and Implementation of High Precision Digital Frequency Meter Based on C8051F020 Microcontroller

DOI

10.2991/jimec-17.2017.125How to use a DOI?

Keywords

C8051F020 microcontroller; digital frequency meter; high-speed comparator; direct measurement of the week; direct measurement frequency measurement

Abstract

For the oscilloscope, spectrum analyzer and other analog circuit equipment measured characteristics of the narrow frequency range, slow frequency measurement, the design of the digital frequency based on a C8051F020 microcontroller. Frequency meter hardware part mainly includes C8051F020 microcontroller, high speed comparator and TFT LCD screen. Comparator converts the enter signal into a square wave signal for the microcontroller count, TFT LCD screen display measurement frequency. Using a direct measurement frequency method combined with the direct measurement of the week in the control algorithm, which improved the accuracy of the measurement frequency. Experiments show that: the digital frequency meter can achieve the purpose of frequency measurement of digital, measurement frequency range of 1 Hz~4 MHz, and measurement frequency accuracy is high.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Li Su
AU  - Aiguo Shang
AU  - Jin Qin
AU  - Jingjing Yang
PY  - 2017/10
DA  - 2017/10
TI  - Design and Implementation of High Precision Digital Frequency Meter Based on C8051F020 Microcontroller
BT  - Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC 2017)
PB  - Atlantis Press
SP  - 573
EP  - 578
SN  - 2352-538X
UR  - https://doi.org/10.2991/jimec-17.2017.125
DO  - 10.2991/jimec-17.2017.125
ID  - Su2017/10
ER  -