Microcomputer driven fail-safe device with short circuit detection for electronic control circuitry
US4587590A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1984 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Feb 15, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0796
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fail-safe device for removing power from controlled circuitry upon the occurrence of an undesired operating condition is disclosed. The fail-safe device includes means for detecting a short circuit in the controlled circuitry and for indicating the existence of an undesired operating condition if a short is detected. The fail-safe device further includes a non-volatile memory for retaining data through a power outage so that the existence of an undesired operating condition is remembered upon return of the power. The data stored in the non-volatile memory may also be useful in investigating an accident or malfunction. The fail-safe device still further includes a reset button which returns power after an undesired operating condition if it is momentarily depressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.