US Patent No: 6,868,358
Number of patents in Portfolio can not be more than 2000
Method for processing information in a tire pressure monitoring system
Stats
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Mar 15, 2005
Issued date -
Dec 16, 2002
filing date -
10/320,799
serial no -
In Force
status
Importance
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Abstract
A method of processing information in a tire pressure monitoring system includes the steps of: establishing a reference temperature; determining a pressure warning threshold at the reference temperature; measuring gauge pressure and gauge temperature within a tire cavity; correcting the gauge pressure to a filtered pressure value at the reference temperature using the Ideal Gas Law; and comparing the filtered pressure value against the pressure warning threshold to determine the necessity for a warning signal. In an advanced form of the invention, the method includes determining a pressure leak rate; predicting the time interval that the filtered pressure value will cross the pressure warning threshold at the leak rate and generating progressive warnings to the driver over the time interval. Fuzzy logic is used to quantify the probability of a warning state for each data point, allow for measurement error; and report the state of maximum probability to minimize the occurrence of false warning. A warning utility function is derived based upon a combination of the filtered pressure and leak rate.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,517,853 Process for using signals in a tire monitoring system to determine reinflation | 26 | 1994 | |
| 5,895,846 Method of processing signals in a system for monitoring the tires of a vehicle during travel | 22 | 1997 | |
| 5,886,624 Method for processing pressure and temperature measurements in a tire monitoring system | 12 | 1997 | |
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| 5,783,992 Time based low tire pressure warning sensor | 27 | 1996 | |
| 5,721,374 Method of detecting low tire pressure by comparing wheel speeds | 27 | 1996 | |
| 6,362,731 Tire pressure monitor and location identification system and method | 48 | 2000 | |
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| 5,827,957 Method and apparatus for evaluating vehicle tire condition by comparing tire operating parameters with present limits overtime | 42 | 1997 | |
| 6,092,415 Method and device for monitoring the tire air pressure of the wheels of an automobile | 13 | 1999 | |
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| 5,721,528 Low tire warning system | 52 | 1996 | |
| 6,002,327 Low tire warning system with axle torque signal | 45 | 1998 | |
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| 6,292,096 Apparatus and method for transmitting data in a tire condition sensing system | 44 | 1999 | |
| 2002/0084,896 TIRE CONDITION SENSOR COMMUNICATION WITH TIRE LOCATION PROVIDED VIA VEHICLE-MOUNTED IDENTIFICATION UNITS | 17 | 2001 | |
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| 5,285,189 Abnormal tire condition warning system | 96 | 1991 | |
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| 5,939,977 Method and apparatus for synchronizing to a data stream for an inductively coupled transponder | 60 | 1997 | |
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| 4,866,419 Method for detecting an underinflated tire by monitoring a work vehicle suspension | 10 | 1987 | |
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| 6,144,295 Automatic central tire inflation system | 27 | 1998 | |
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| 6,118,369 Tire diagnostic system | 29 | 1998 | |
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| 6,292,095 Off-the-road tire temperature and pressure monitoring system | 24 | 1999 | |
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| 5,531,574 Closed-type compressor | 6 | 1994 | |
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| 5,900,809 Method for processing pressure and temperature measurements in a tire monitoring system | 10 | 1997 | |
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| 5,760,682 Method for detecting a deflated tire on a vehicle | 33 | 1997 | |
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| 5,963,128 Remote tire pressure monitoring system | 81 | 1996 | |
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| 5,825,286 Vehicular data collection and transmission system and method | 62 | 1996 | |
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| 6,278,363 Method and system for monitoring air pressure of tires on a vehicle | 88 | 2000 | |
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| 5,353,020 Arrangement for monitoring operating parameters of vehicle pneumatic tires mounted on wheel rims | 22 | 1992 | |
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| 4,331,845 Output switch assembly and operating mechanism | 2 | 1964 | |
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| 6,259,360 Pressure monitor for vehicle tire | 21 | 1999 | |
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| 6,281,787 Vehicle tire leak detection system and method of using the same | 20 | 2000 | |
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| 4,909,074 Method of determining a variable air pressure value of a pneumatic vehicle tire and indicating a pressure value | 68 | 1988 | |
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| 4,339,970 Serviceable releasable socket retaining ratchet | 11 | 1980 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 15, 2016 |
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