[8a-Z22-1~8] 1.5 Instrumentation, measurement and Metrology

[8a-Z22-2] Automatic Adjusting Strain Measurement Digital Circuit

〇Tsuneo Yamauchi¹, Shouji Niwa¹ (1.BSR Co., Ltd.)

Keywords:strain gauge, atomatic adjusting digital circuit, low power consumption

An automatic adjusting strain measurement digital circuit without a Wheatstone bridge circuit is provided. The digital circuit performs automatic adjusting an output thereof with respect to variation of environmental temperature and drift thereof. The adjusted output from the circuit can be transferred to anywhere as digital date. The digital circuit is fabricated small with simple construction and can be jointed to the strain gauge. Where the strain gauge of 120 ohms is used, digital conversion is performed with low power consumption such as 5V and 20mA or less and lines of power and signal can be shared with the digital circuit and the strain gauge.