| 摘要 |
PURPOSE: A measuring apparatus for a strain gauge is provided to easily set zero point and span through one-time input after electric connection of a strain gauge to a terminal block. CONSTITUTION: A measuring apparatus for a strain gauge comprises a terminal block(160), a power supply unit(150), a signal stabilizing unit(110), a zero point adjusting unit(120), a span adjusting unit(130), an analog signal output unit(140), and a digital signal processing unit(200). The terminal block comprises a terminal for applying power to a strain gauge and a terminal for receiving an analog detection signal from the strain gauge. The power supply unit supplies DC power, being applied to the strain gauge, to the terminal block The signal stabilizing unit corrects the nonlinear characteristic of the analog detection signal of the strain gauge input through the terminal block so as to obtain a nonlinear correction voltage signal. The zero point adjusting unit obtains a zero point correction voltage signal by subtracting the zero voltage signal from the nonlinear correction voltage signal. The span adjusting unit amplifies the zero point correction voltage signal so as to obtain a span correction voltage signal. The analog signal output outputs a span correction voltage signal to an external device. The digital signal processing unit controls so that the zero point and span adjusted analog signal is outputted through the analog signal output part to the external device.
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