US5434788A
Expired / Lapsed
US
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Sensory system for vehicle navigation
Assignee: Motorola Solutions Inc
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Filing: 1994-06-15
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Granted: 1995-07-18
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Expires: 2014-06-15
Abstract
Abstract An improved accuracy sensory system for vehicle navigation employs a sensor, such as a compass (515), or an odometer (509), for sensing a navigation parameter of a vehicle. A signal is provided from the sensor, having an erroneous component. A model free recognizer, such as a fuzzy inferencing navigation computer (501), is employed to recognize this erroneous behavior. After recognition, the sensor can be recalibrated, or assigned a clearness coefficient. The signal is then combined with other measurements of the same parameter and subjected to map matching before deriving the final navigation variable.
Inventors
- 👤 Leslie G. Seymour
- 👤 Michael Barnea
- 👤 Clyde B. Harris
- 👤 Allan M. Kirson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:32
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/26; G01C21/28; G01C21/30; Y; Y10; Y10S; Y10S706/00; Y10S706/902; Y10S706/903; Y10S706/905
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
An improved accuracy sensory system for vehicle navigation comprising: first means for sensing a navigation parameter of a vehicle and for providing a first signal indicative of said navigation parameter; second means for sensing said navigation parameter of the vehicle and for providing a second signal indicative of said navigation parameter; means for classifying a difference between said first signal and said second signal into a plurality of sets representative of predetermined behaviors; and means for providing a clearness coefficient for the first signal dependent on a degree of participation of the difference between the first and second signals in each of the plurality of sets.
Claim 2
Dependent Claim
106 words
An improved accuracy sensory system for vehicle navigation comprising: first means for sensing a navigation parameter of a vehicle and for providing a first signal indicative of said navigation parameter; second means for sensing said navigation parameter of the vehicle and for providing a second signal indicative of said navigation parameter; means for classifying a difference between said first signal and said second signal into a plurality of sets representative of predetermined behaviors; and means for providing a clearness coefficient for the first signal dependent on a degree of participation of the difference between the first and second signals in each of the plurality of sets.
Claim 3
Dependent Claim
30 words
A system in accordance with claim 1 wherein the means for providing a clearness coefficient provides a decreasing clearness coefficient if the difference between the first and second signals increases.
Claim 4
Independent Claim
103 words
A method of an improved accuracy sensory system for vehicle navigation comprising the steps of: sensing a navigation parameter of a vehicle and for providing a first signal indicative of said navigation parameter; sensing said navigation parameter of the vehicle and for providing a second signal indicative of said navigation parameter; classifying a difference between the first signal and the second signal into a plurality of sets representative of predetermined behaviors; and providing a clearness coefficient for the first signal dependent on a degree of participation of the difference between the first and second navigation parameters in each of the plurality of sets.
Claim 5
Independent Claim
103 words
A method of an improved accuracy sensory system for vehicle navigation comprising the steps of: sensing a navigation parameter of a vehicle and for providing a first signal indicative of said navigation parameter; sensing said navigation parameter of the vehicle and for providing a second signal indicative of said navigation parameter; classifying a difference between the first signal and the second signal into a plurality of sets representative of predetermined behaviors; and providing a clearness coefficient for the first signal dependent on a degree of participation of the difference between the first and second navigation parameters in each of the plurality of sets.
Claim 6
Dependent Claim
116 words
An improved accuracy sensory method for vehicle navigation, the method comprising: sensing a heading of a vehicle and for providing a first heading in response thereto; sensing another heading of a vehicle and for providing a second heading in response thereto; classifying a difference between the first and second headings into a plurality of sets representative of predetermined behaviors; providing a clearness coefficient for the first heading dependent on a degree of participation of the difference between the first and second headings in each of the plurality of sets; and deriving a fused heading variable indicative of a heading of the vehicle by combining the first heading, dependent on the clearness coefficient, and the second heading.
Claim 7
Dependent Claim
116 words
An improved accuracy sensory method for vehicle navigation, the method comprising: sensing a heading of a vehicle and for providing a first heading in response thereto; sensing another heading of a vehicle and for providing a second heading in response thereto; classifying a difference between the first and second headings into a plurality of sets representative of predetermined behaviors; providing a clearness coefficient for the first heading dependent on a degree of participation of the difference between the first and second headings in each of the plurality of sets; and deriving a fused heading variable indicative of a heading of the vehicle by combining the first heading, dependent on the clearness coefficient, and the second heading.
Claim 8
Dependent Claim
176 words
An improved accuracy sensory system for vehicle navigation comprising: a compass providing a compass heading signal; an odometer providing an odometer heading signal and an odometer distance traversed signal, wherein both the odometer heading signal and the odometer distance traversed signal are determined dependent on a left wheel and a right wheel calibration factor; a GPS receiver providing a GPS distance traversed signal; means for classifying a difference in distance traversed between the odometer distance traversed signal and the GPS distance traversed signal into a plurality of distance traversed sets representative of predetermined behaviors, and for classifying a difference in heading between the compass heading signal and the odometer heading signal into a plurality of heading sets representative of predetermined behaviors; and means for providing a left wheel and a right wheel calibration factor to the odometer dependent on a degree of participation of the difference in distance traversed in each of the plurality of distance traversed sets and a degree of participation of the difference in heading in each of the plurality of heading sets.
Claim 9
Dependent Claim
176 words
An improved accuracy sensory system for vehicle navigation comprising: a compass providing a compass heading signal; an odometer providing an odometer heading signal and an odometer distance traversed signal, wherein both the odometer heading signal and the odometer distance traversed signal are determined dependent on a left wheel and a right wheel calibration factor; a GPS receiver providing a GPS distance traversed signal; means for classifying a difference in distance traversed between the odometer distance traversed signal and the GPS distance traversed signal into a plurality of distance traversed sets representative of predetermined behaviors, and for classifying a difference in heading between the compass heading signal and the odometer heading signal into a plurality of heading sets representative of predetermined behaviors; and means for providing a left wheel and a right wheel calibration factor to the odometer dependent on a degree of participation of the difference in distance traversed in each of the plurality of distance traversed sets and a degree of participation of the difference in heading in each of the plurality of heading sets.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-07-17 | 1999-01-16 | 1999-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-17 | 2003-01-16 | 2003-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-17 | 2007-01-16 | 2007-07-18 | $7700.00 | Window Closed / Lapsed |