GS0329 デジタル出力を可能にした小型発振回路センサーによるひずみ計測

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  • GS0329 Strain Measurement Properties by Small Type of Digital Output Sensor using Oscillator Circuit

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The strain measurement system using CMOS inverter oscillator circuits can be omit an amplifier because a counting device measures frequency changes of circuit voltage output caused by resistance changes of a strain gauge, then the miniaturization of this system become possible comparatively easily. In this study, the authors manufactured a new small type of digital output strain sensor using CMOS inverter oscillator circuits. This digital output strain sensor was applied to the strain measurement on static tensile tests of specimens and its measurement accuracy was examined. The test results showed that the same level of accuracy as conventional sensor has been achieved by this digital output strain sensor.

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