A Miniature Smart Voltage Sensor

Abstract

Based on the capacitor voltage divider method, a miniature smart voltage sensing method is proposed, which employs a scheme that dynamically measures the coupling capacitor between the voltage sensor and the ground. Then a prototype of miniature smart voltage sensor (MSVS) is developed. The Performance of the proposed method is evaluated through theoretical analysis and experimental tests. The experimental tests show that the MSVS has high precision, good linearity and certain high-frequency signal acquisition capability.