Smart power driver system for a motor vehicle
US5063516A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1989 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Aug 21, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical power driver system with fault monitoring provision for both a self test mode and a normal operating mode. During the self test mode, the power driver is momentarily actuated during test intervals and its output compared to a predetermined value for providing self test fault indications. Each power driver is sampled and an indication provided of whether the fault is new or old in addition to providing a count of faults. During normal operation, monitoring circuitry provides indications of a plurality of fault types including over temperature, open circuit, short to ground, and short to voltage. A determination is made of whether each fault type is new or old and a count of faults provided. Output formatting provides indications of fault type, fault count, and whether the fault is intermittent or hard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.