Tire management system

• US 20070194898A1
• Filed: 01/29/2007
• Published: 08/23/2007
• Est. Priority Date: 01/30/2006
• Status: Active Grant

• Current Assignee: Bridgestone Corporation
• Original Assignee: Bridgestone Corporation
• Inventors: Fukumori, Hajime
• Granted Patent: US 7,679,502 B2
• Time in Patent Office: Days
• US Class Current: 340/447
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0442 the transmitted signal comprises further information, e.g. instruction codes, sensor characteristics or identification data
• CPC Class Codes: B60C 23/0462 Structure of transmission protocol

Abstract

A receiving module selects frequencies to be used for data request signals from all channels if there is no channel prohibited from being used, and if there are channels prohibited from being used, the receiving module selects frequencies to be used for data request signals from channels other than the channels prohibited from being used. In the case failed in acceptance of measured data from a sensor module, the receiving module sets communication channels failed in acceptance of measured data predetermined times to prohibited channels from being used. In this manner, when the receiving module transmits the data request signals to the sensor module, frequencies of channels having jamming radio waves and the like could not be selected by the receiving module, thereby enabling the receiving module to select the frequencies of high probability in communication reception.

Claims

1. ]. A tire management system including sensor modules each installed in the inner side of a tire mounted on a vehicle for measuring quantities of state of the tire and transmitting the measured data to a vehicle body, and receiving modules each provided at the vehicle body for transmitting data request signals requesting said measured data to said sensor module in predetermined cycles and obtaining the measured data transmitted from the sensor module,

wherein each of said receiving modules is adapted to transmit the data request signal to said sensor module at a frequency of a communication channel other than the channels which have already failed for predetermined times in communication with said sensor module.

2. ]. The tire management system as set forth in claim 1, wherein said predetermined times are those by which the channel can be judged to be assuredly unable to be used.

3. ]. A tire management system including sensor modules each installed in the inner side of a tire mounted on a vehicle for measuring quantities of state of the tire and transmitting the measured data to a vehicle body, and receiving modules each provided at the vehicle body for transmitting data request signals requesting said measured data to said sensor module in predetermined cycles and obtaining the measured data transmitted from the sensor module,

wherein each of said receiving modules is adapted to transmit the data request signal to said sensor module at a frequency of a communication channel other than the channels whose numbers of failures in communication are within a range from the maximum to Nth (N:

natural number of 1 or more).