Tire pressure monitoring system and method of operating the tire pressure monitoring system

Patent metadata

Field	Value
Publication number	US-10543721-B2
Application number	US-201615385322-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Nov 2, 2016
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A method of operating a Tire Pressure Monitoring System (TPMS) includes executing tire pressure monitoring of at least one tire installed on a vehicle in a first mode, and transmitting frequency signal loss information to a center if a loss of a frequency signal in the first mode occurs in a designated time period.

First claim

What is claimed is:

1. A method of operating a Tire Pressure Monitoring System (TPMS) configured to communicate with a center, comprising:
executing tire pressure monitoring of at least one tire installed on a vehicle in a first mode; and
transmitting frequency signal loss information to the center if a loss of a frequency signal in the first mode occurs in a designated time period,
wherein, when information on a frequency shadow area is received from the center, the tire pressure monitoring is switched to a second mode from the first mode until the vehicle deviates from the frequency shadow area.

2. The method according to claim 1 , further comprising switching execution of tire pressure monitoring to the first mode if a wheel speed of the at least one tire is within a designated range.

3. The method according to claim 2 , further comprising:
transmitting a determination result as to whether or not mode switching is executed to the center; and
measuring a reception rate of a command received from the center and transmitting the measured reception rate to the center.

4. The method according to claim 1 , wherein:
the first mode is a mode for directly measuring a pneumatic pressure of the at least one tire; and
the second mode is a mode for indirectly measuring a pneumatic pressure of the at least one tire based on a wheel speed of the at least one tire.

5. The method according to claim 1 , wherein the step of switching execution of tire pressure monitoring to the second mode is carried out if the vehicle enters a frequency shadow section and a diagnostic trouble code (DTC) is recognized.

6. The method according to claim 1 , further comprising receiving environmental information or road information from the center in real time, and setting a mode to execute tire pressure monitoring based on the received environmental information or road information.

7. A Tire Pressure Monitoring System (TPMS) configured to communicate with a center comprising:
a first measurement device for executing tire pressure monitoring of at least one tire installed on a vehicle in a first mode; and
a controller for transmitting frequency signal loss information to the center if a loss of a frequency signal in the first mode occurs in a designated time period,
wherein, when information on a frequency shadow area is received from the center, the controller switches execution of tire pressure monitoring to a second mode from the first mode until the vehicle deviates from the frequency shadow area.

8. The TPMS according to claim 7 , further comprising a second measurement device for executing tire pressure monitoring of the at least one tire in the second mode.

9. The TPMS according to claim 8 , wherein the controller:
controls the second measurement device so as to measure a wheel speed of the at least one tire; and
switches execution of tire pressure monitoring to the first mode if the wheel speed of the at least one tire is within a designated range.

10. The TPMS according to claim 9 , wherein the controller transmits a determination result as to whether or not mode switching is executed to the center, measures a reception rate of a command received from the center, and transmits the measured reception rate to the center.

11. The TPMS according to claim 7 , wherein:
the first mode is a mode for directly measuring a pneumatic pressure of the at least one tire; and
the second mode is a mode for indirectly measuring a pneumatic pressure of the at least one tire based on a wheel speed of the at least one tire.

12. The TPMS according to claim 7 , wherein the controller switches execution of tire pressure monitoring to the second mode if the vehicle enters a frequency shadow section and a diagnostic trouble code (DTC) is recognized.

13. The TPMS according to claim 7 , wherein, if environmental information or road information is received from the center in real time, the controller sets a mode to execute tire pressure monitoring based on the received environmental information or road information.

14. A computer readable recording medium of recording a program to implement the method according to claim 1 , executed by a processor.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Choi Sung Ho

Classifications

• B60C23/0401 Primary

  characterised by the type of alarm · CPC title

• B60C23/0479 Primary

  Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations · CPC title

• B60C23/0445 Primary

  Means for changing operating mode, e.g. sleep mode, factory mode or energy saving mode · CPC title

• B60C23/061

  by monitoring wheel speed (measuring distance traversed on the ground by vehicles G01C22/00) · CPC title

• G01C21/3691

  Retrieval, searching and output of information related to real-time traffic, weather, or environmental conditions (arrangements for giving variable traffic instructions G08G1/09) · CPC title