Control system for vehicle safety device
US5283472A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/0173
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control system for a vehicle safety device includes a drive circuit. The drive circuit includes a main switching element, and a safety switch which is turned on by an inertia force produced at the time of a collision of the vehicle. The vehicle safety device is activated when the main switching element and said safety switch are both turned on. The control system further includes an acceleration sensing circuit for detecting deceleration of the vehicle, and a microcomputer. The microcomputer judges, based on a deceleration signal from the acceleration sensing circuit, whether or not a collision has occurred, and outputs an ON-instruction signal to the main switching element when the microcomputer judges that the collision has occurred. The microcomputer also judges whether or not the acceleration sensing circuit is subjected to a malfunction, and judges whether the safety switch is in the ON state or the OFF state. The microcomputer outputs an ON-instruction signal to the main switching element when the microcomputer judges that the acceleration sensing circuit is subjected to a malfunction and at the same time when the microcomputer judges that the safety switch is in the ON sta…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.