Patent US4873452A successfully refreshed from Google Patents.
US4873452A
Expired / Lapsed
US
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Collision detector for a vehicle
Assignee: Honda Motor Co Ltd
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Filing: 1988-09-22
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Granted: 1989-10-10
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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 15:24
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.
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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 |