10702 Strain Measurement Properties by Small Type Sensor Using Oscillator Circuit

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  • 10702 小型発振回路センサーによるひずみ計測

Abstract

New type of strain sensor using a CMOS inverter oscillator circuit has been developed. This type sensor can omit an amplifier because a counting device measures frequency changes of circuit voltage output caused by resistance changes of a strain gauge. In this study, the authors manufactured one small prototype strain sensor using a CMOS inverter oscillator circuit. Characteristics and measurement accuracy of this small type sensor were confirmed through static tensile tests of specimens. The test results showed that the same level of accuracy as conventional sensor has been achieved by this small type sensor.

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