提高直流单电桥测电阻准确度的讨论

Improve the accuracy of resistance measurement with DC single bridge

直流单电桥主要用来测量1～106Ω中阻值电阻,它的特点是灵敏度高,可获得高精度的测量结果。尽管直流单电桥的灵敏度高,我们能否进一步提高其灵敏度,得到更为准确的被测电阻阻值呢?本文从理论上论证找到了灵敏度与哪些因素有关,从而找到了提高直流单电桥测电阻准确度的各种方法。

Single bridge of direct current is mainly used to measure resistance which range 1～106 Ω,with its characteristic of high sensitivity, so we can obtain a high precise measure result. Can we go a further step to improve its sensitivity, and get a measured resistance value more accurately ? This paper demonstrates what factors are related to the sensitivity in theory, so that we can find out various methods of improving the accuracy when measuring resistance with single bridge of direct current.