US4873452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collision detector for a vehicle
Assignee: Honda Motor Co Ltd
•
Filing: 1988-09-22
•
Granted: 1989-10-10
•
Expires: 2008-09-22
Abstract
Abstract It is an object of the present invention to provide a collision detector for a vehicle, capable of avoiding the adverse effect of the diagnostic pulses on the detection of a collision so that the failure of the acceleration sensor can be diagnosed correctly. A collision detector in accordance with the present invention comprises a diagnostic pulse generator which applies diagnostic pulses to an acceleration sensor to detect the failure of the acceleration sensor, and a diagnostic circuit which stops the output diagnostic pulses of the diagnostic pulse generator when the output of the acceleration sensor exceeds a malfunction avoidance level which is lower than a reference collision level.
Inventors
- 👤 Makie Morota
- 👤 Junichi Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:41
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/01; B60R21/013; B60R21/0132; B60R21/01332; G; G01; G01R; G01R31/00; G01R31/005; G01R31/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A collision detector for a vehicle comprising: an acceleration sensor for detecting acceleration of the vehicle; signal processing circuit which provides a collision signal when a value, based on an output of the acceleration sensor, exceeds a predetermined reference collision level; a diagnostic pulse generator which applies diagnostic pulses to the acceleration sensor to detect a failure of the acceleration sensor; and a diagnostic circuit which stops an output of the output diagnostic oulses the diagnostic pulse generator when the output of the acceleration sensor exceeds a malfunction avoidance level which is lower than the predetermined reference collision level.
Claim 2
Dependent Claim
99 words
A collision detector for a vehicle comprising: an acceleration sensor for detecting acceleration of the vehicle; signal processing circuit which provides a collision signal when a value, based on an output of the acceleration sensor, exceeds a predetermined reference collision level; a diagnostic pulse generator which applies diagnostic pulses to the acceleration sensor to detect a failure of the acceleration sensor; and a diagnostic circuit which stops an output of the output diagnostic oulses the diagnostic pulse generator when the output of the acceleration sensor exceeds a malfunction avoidance level which is lower than the predetermined reference collision level.
References Cited (Backward Citations)
US3629816A
Cited
US3851305A
Cited
US3889232A
Cited
US3949357A
Cited
US3870894A
Cited
US3789950A
Cited
US3911391A
Cited
US3964016A
Cited
US3967135A
Cited
US4410875A
Cited
US4308452A
Cited
US4638179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |