Patent ID: 11860195
Assignee: INTERBAY ASSETS, LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A non-contact voltage sensing apparatus comprising a capacitive sensing mechanism capable of measuring a voltage between a conductor of an alternating current (AC) electrical circuit and a reference potential,
wherein the non-contact voltage sensing apparatus does not interrupt the conductor, make direct electrical contact to the conductor, or reference any other AC voltage signal;
wherein the capacitive sensing mechanism comprises:
an electrode;
waveform-sensing electronic circuitry configured to obtain an AC voltage waveform induced by capacitive coupling between the conductor and the electrode;
capacitance-determining electronic circuitry configured to obtain a scaling factor based on a coupling capacitance formed between the conductor and the electrode; and
signal processing electronic circuity configured to obtain, from the AC voltage waveform obtained by the waveform-sensing electronic circuity and the coupling capacitance-based scaling factor obtained by the capacitance-determining electronic circuitry, the voltage between the conductor and the reference potential.