Crash sensor
US5189311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Jan 24, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/0133
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electronic crash sensor which can operate appropriately in response to any form of crash of a vehicle. An input acceleration waveform from an accelerometer is first processed to peak cut any portion thereof lower than a predetermined value. Then, a value obtained such peak cutting is time integrated. Then, a time integrated value of a predetermined function is subtracted from a value obtained by such time integration. Then, the value of the acceleration waveform thus obtained is compared with a predetermined time function value, and when the former is higher than the latter, a triggering signal is delivered to a trigger circuit to trigger operation of a passenger protecting apparatus such as an air bag of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.