Device for indicating errors in a control line of an electric control units
US5587661A · kind A · utility
2Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1994 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Dec 14, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/415
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An indicating device for electric control units has a light-emitting diode together with at least two resistors placed between a supply voltage and ground. A control line extends from the control unit and is connected between the two resistors. The control unit controls the potential on the control line in such a manner that when a defect is recognized an indication is provided. An indication is also provided in the event of a short circuit between the control line and the supply voltage, as well as upon an interruption in the control line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.