A high-resolution, linear resistance-to-frequency converter

被引:63
|
作者
Mochizuki, K [1 ]
Watanabe, K [1 ]
机构
[1] SHIZUOKA UNIV,ELECTR RES INST,HAMAMATSU,SHIZUOKA 432,JAPAN
关键词
D O I
10.1109/19.494596
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A resistance-to-frequency converter consisting of a Wheatstone bridge followed by an integrator and a comparator is described. In concept the circuit represents a relaxation oscillator whose frequency changes linearly with a resistance change detected by the bridge. Analyses show that a resolution better than 0.05% is possible with the simple configuration, and an excellent linearity is maintained over the wide resistance change by using a simple compensation method. The converter is therefore suited as a signal conditioner of a resistive sensor. Experimental results are included to demonstrate its performance.
引用
收藏
页码:761 / 764
页数:4
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