Patent · US Active

Electrical isolation detection with enhanced dynamic range

US8618809B2 · kind B2 · utility

1Cited by
3References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 29, 2010
Grant dateDec 31, 2013
Priority date—
Expiry dateOct 1, 2031

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R31/007
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A bus terminal is isolated from ground potential during normal operation of the vehicle. A first current is applied to the bus terminal. A current level detector is arranged to detect a first level of the first current, or a corresponding observed voltage level, that exists or flows from the bus terminal to ground. A compensator is configured to compensate for a range in the detected first level by applying a corresponding compensating voltage level to a first resistor coupled to the current level detector. An electronic data processor is capable of estimating a first isolation level between the bus terminal and ground based on the detected first level.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.