Method and apparatus for testing an airbag restraint system
US4990884A · kind A · utility
14Cited by
13References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Dec 12, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/0176
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A test circuit for an airbag restraint system is disclosed and provides an accurate determination of the operativeness of a storage capacitor and calculates the resistance of inertia switch resistors. The capacitor is tested by discharging and charging the capacitor. The values of the inertia switch resistors are determined by switching known resistive values in parallel with the inertia switch resistors. Based on the monitored voltage values during the switching, resistance values are calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.