Figure 5 | Scientific Reports

Figure 5

From: Wrist-wearable bioelectrical impedance analyzer with miniature electrodes for daily obesity management

Figure 5

Calibration curve and measurement error at midpoint between two reference points for (a) 2-point calibration, (b) 4-point calibration, and (c) 4-point coordinate conversion calibration. (d) Calibration circuit for 4 reference resistance values (A‒C route: R2, A‒D route: R3, B‒C route: R1, B‒D route: R1 + R2 + R3). ADC analog-to-digital converter, Zi input impedance of the voltmeter, Rs output impedance of the current source.

Back to article page