US5345402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle crash simulator system for testing crash sensors
Assignee: Automotive Systems Laboratory Inc
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Filing: 1993-06-04
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Granted: 1994-09-06
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Expires: 2013-06-04
Abstract
Abstract A system (10) for simulating vehicle crashes for testing or evaluating the reliability of a vehicle crash sensor (20) includes a model waveform generator (16) which utilizes a method of modeling an actual vehicle crash waveform to generate an infinite set of model crash waveforms, and subsequently inputs these sets of modeled crash waveforms into a thruster apparatus (12). The thruster apparatus (12) mechanically exerts a force onto the crash sensor (20) corresponding to each input model waveform. The crash sensor response is tracked and analyzed by a test analyzer (18). The model crash waveforms are generated by breaking down a predetermined crash waveform into a crash pulse (signal of interest) and multiplicative noise signal. The multiplicative noise signal is then statistically characterized as a function of time. Randomly variable waveforms from a white noise generator (128) are then modified with the statistical characterization and multiplied with the signal of interest to generate the infinite set of model crash waveforms.
Inventors
- 👤 Tony Gioutsos
- 👤 Michael A. Piskie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:49
CPC Classifications
G; G01; G01M; G01M17/00; G01M17/007; G01M17/0078; G06; G06G; G06G7/00; G06G7/48; G06G7/70; G09; G09B; G09B25/00; G09B25/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A system for simulating vehicle crashes to test the reliability of a vehicle crash sensor comprising: means for generating a plurality of model crash waveforms by generating a plurality of statistical variations on an actual crash waveform; means for physically applying said plurality of model crash waveforms to said vehicle crash sensor, said sensor providing an output responsive to each applied model crash waveform; and means for analyzing said sensor output relative to each respective one of said plurality of applied model crash waveforms, said analyzing means providing an output indicative of the operational reliability of said crash sensor.
Claim 2
Independent Claim
99 words
A system for simulating vehicle crashes to test the reliability of a vehicle crash sensor comprising: means for generating a plurality of model crash waveforms by generating a plurality of statistical variations on an actual crash waveform; means for physically applying said plurality of model crash waveforms to said vehicle crash sensor, said sensor providing an output responsive to each applied model crash waveform; and means for analyzing said sensor output relative to each respective one of said plurality of applied model crash waveforms, said analyzing means providing an output indicative of the operational reliability of said crash sensor.
Claim 3
Dependent Claim
102 words
The system of claim 1 wherein said means for generating a plurality of model crash waveforms comprises: means for separating a signal of interest from a predetermined crash data set; means for generating a signal indicative of noise present in said predetermined crash data set based on said signal of interest; means for generating information characteristic of said noise signal; means for generating a randomly variable waveform; means for modifying said randomly variable waveform with said characteristic information; and means for combining said modified randomly variable waveform with said signal of interest to generate each of said plurality of model crash waveforms.
Claim 4
Dependent Claim
33 words
The system of claim 2 wherein said means for generating information characteristic of said noise signal comprises means for determining a mean and variance of said noise signal as a function of time.
Claim 5
Independent Claim
166 words
A system for evaluating a vehicle crash detection sensor performance comprising: model crash waveform generating means comprising: means for separating a signal of interest from a predetermined data set; means for generating a signal indicative of noise present in said predetermined data set based on said signal of interest; means for generating information characteristic of said noise signal; means for generating a plurality of randomly variable waveforms; means for modifying each of said plurality of randomly variable waveforms with said characteristic information; and means for multiplying each of said modified randomly variable waveforms with said signal of interest to generate a plurality of model waveforms; a thruster means responsive to said plurality of model waveforms for mechanically exerting on the crash detection sensor a force corresponding to each of said plurality of model waveforms; and means for evaluating said crash detection sensor performance including a means for determining an average crash detection sensor response to said plurality of model waveforms as exerted by said thruster means.
Claim 6
Independent Claim
166 words
A system for evaluating a vehicle crash detection sensor performance comprising: model crash waveform generating means comprising: means for separating a signal of interest from a predetermined data set; means for generating a signal indicative of noise present in said predetermined data set based on said signal of interest; means for generating information characteristic of said noise signal; means for generating a plurality of randomly variable waveforms; means for modifying each of said plurality of randomly variable waveforms with said characteristic information; and means for multiplying each of said modified randomly variable waveforms with said signal of interest to generate a plurality of model waveforms; a thruster means responsive to said plurality of model waveforms for mechanically exerting on the crash detection sensor a force corresponding to each of said plurality of model waveforms; and means for evaluating said crash detection sensor performance including a means for determining an average crash detection sensor response to said plurality of model waveforms as exerted by said thruster means.
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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) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |