Title :
A Design of High-Precision Digital Resistance Meter
Author :
Cai Ze-fan ; Li Yan
Author_Institution :
Dept. Electron. & Inf. Eng., Shunde Polytech., Shunde, China
Abstract :
This paper introduces a system design of high-precision resistance meter based on a high-performance microprocessor MC9S08AC16 and a high-resolution A/D converter AD7705. The system block diagram, hardware circuits, software and test results are given. Functions such as automatic range switching, zero adjustment, software error compensation and auto distinguish based on error level are added to the meter. Experiments show that the meter has many advantages such as easy design, high accuracy, compact structure, high reliability and low cost.
Keywords :
analogue-digital conversion; electric resistance measurement; microprocessor chips; reliability; automatic range switching; hardware circuit; high-precision digital resistance meter; high-resolution A/D converter AD7705; microprocessor MC9S08AC16; reliability; software error compensation; system block diagram; zero adjustment; Accuracy; Bridge circuits; Electrical resistance measurement; Error compensation; Microprocessors; Resistance; Resistors;
Conference_Titel :
Engineering and Technology (S-CET), 2012 Spring Congress on
Conference_Location :
Xian
Print_ISBN :
978-1-4577-1965-3
DOI :
10.1109/SCET.2012.6341897
