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Method for learning and setting warm placard pressure threshold for a direct tire pressure monitoring system

A technology of tire pressure monitoring and heating signs, which is applied in tire measurement, transportation and packaging, tire parts, etc.

Active Publication Date: 2013-03-13
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention thus enables tire pressure monitoring systems to detect lower tire pressures based on warm-plate pressure threshold settings, even for multiple-plate conditions, without the complications associated with existing approaches requiring expensive and complex hardware

Method used

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  • Method for learning and setting warm placard pressure threshold for a direct tire pressure monitoring system
  • Method for learning and setting warm placard pressure threshold for a direct tire pressure monitoring system
  • Method for learning and setting warm placard pressure threshold for a direct tire pressure monitoring system

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Embodiment Construction

[0014] Although aspects of the invention have been described with reference to specific illustrative embodiments, the invention is not limited to these embodiments and further improvements, applications and embodiments can be practiced without departing from the invention. In the drawings, like reference numerals will be used to describe like parts. Those skilled in the art will recognize that changes may be made in the various components described herein without departing from the scope of the invention.

[0015] FIG. 1 shows a tire pressure monitoring system 12 for monitoring air pressure in a left front tire 14A, a right front tire 14B, a right rear tire 14C, and a left rear tire 14D. Each tire 14A-14D has a respective tire pressure sensor circuit 16A, 16B, 16C and 16D. Each sensor circuit 16A-16D has a respective antenna 18A, 18B, 18C, and 18D. Each tire is placed on a corresponding wheel of the vehicle. Although four tires are illustrated here, it should be noted that ...

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Abstract

A method for setting a warm placard tire pressure threshold for a motor vehicle tire pressure monitoring system that initiates a learn mode in the tire pressure monitoring system, starts a timer upon determining a vehicle speed is greater than a predetermined speed threshold, stops the timer upon determining the vehicle speed is less than or equal to the predetermined speed threshold or a predetermined period of time has expired, detects a plurality of tire pressures for a tire location while the timer is timing, stores the plurality of tire pressures, averages the plurality of tire pressures to determine a warm placard tire pressure threshold upon the predetermined period of time expiring, and sets the warm placard tire pressure threshold in the tire pressure monitoring system.

Description

technical field [0001] The present invention relates generally to direct tire pressure monitoring systems and, more particularly, to determining warm plate pressure in direct tire pressure monitoring systems. Background technique [0002] A tire pressure monitoring system (TPMS) is an electronic system that monitors the air pressure of the tires on a vehicle. Such systems use electromagnetic (EM) radio frequency (RF) signals to generate a pressure signal that is transmitted to a receiver and corresponds to the pressure within the tire. When tire pressure drops below a threshold pressure, an indicator is used to notify a vehicle operator of a low pressure condition. Here, the vehicle operator can remedy the problem by inflating the underpressured tires to increase the pressure. Direct tire pressure monitoring systems (TPMS) use pressure sensors mounted directly on the vehicle's wheels or tires. [0003] Direct TPMS typically rely on a cold tire inflation pressure threshold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/04
CPCB60C23/0471B60C23/04B60C23/0408G16Z99/00
Inventor 迪利普·B·帕特尔格雷格·斯沃德林托马斯·麦克尔·麦克奎德吉姆·迈克尔·魏因福尔瑟
Owner FORD GLOBAL TECH LLC
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