System and method for direct communications between tire sensors

Patent metadata

Field	Value
Publication number	US-11273676-B2
Application number	US-201916713341-A
Country	US
Kind code	B2
Filing date	Dec 13, 2019
Priority date	Dec 13, 2019
Publication date	Mar 15, 2022
Grant date	Mar 15, 2022

Abstract

Approaches are provided where direct communications between tire pressure sensors are provided. One sensor may act as a teacher while other sensors may act as students and learn from the teacher sensor.

First claim

What is claimed is:

1. A tire pressure monitoring sensor, the TPM sensor comprising:
a pressure sensing device that is configured to sense pressure information of a tire;
a transmission buffer coupled to the sensing device, the transmission buffer utilized to store the sensed pressure information;
a transmitter circuit coupled to the transmission buffer and that is configured to transmit the sensed pressure information to a vehicle control unit in a vehicle;
a receiver circuit that is configured to receive information directly from other TPM sensors in the vehicle;
a control circuit that is coupled to the pressure sensing device, the transmitter circuit, and the receiver circuit; the control circuit being configured to transmit first messages directly to the other sensors via the transmission buffer and transmitter circuit, and directly receive second messages from the other sensors via the receiver circuit;
wherein the TPM sensor is configured to operate as a teacher sensor to the other sensors, and wherein the first messages sent by the TPM sensor to the other sensors include first validity information that ensure that an incorrect transmission protocol is not selected or utilized by the other sensors.

2. The TPM sensor of claim 1 , wherein the first validity information includes centripetal acceleration information from the TPM sensor, pressure information from the TPM sensor, and temperature information from the TPM sensor.

3. The TPM sensor of claim 1 , wherein the TPM sensor is configured to receive the second messages from another teacher TPM sensor and to determine a transmission protocol based upon the second messages, and wherein the second messages sent by the another teacher TPM sensor includes second validity information and wherein the second validity information is utilized by the TPM sensor to ensure that an incorrect transmission protocol is not selected or utilized.

4. The TPM sensor of claim 3 , wherein the second validity information includes centripetal acceleration information from the another TPM teacher sensor, pressure information from the another TPM teacher sensor, and temperature information from the another TPM teacher sensor.

5. The TPM sensor of claim 1 , wherein the TPM sensor stores vehicle information associated with the vehicle to which it is deployed and transmits the vehicle information to other sensors in other vehicles to establish a record of sensor deployment.

6. The TPM sensor of claim 1 , wherein the transmitted first messages and received second messages utilize one or more of the Bluetooth protocol, the Bluetooth low energy (BLE) protocol, or radio frequency (RF) communications.

7. The TPM sensor of claim 1 , further comprising a memory storage device, the memory storage device including a plurality of protocols.

8. A method of operating a tire pressure monitoring sensor, the method comprising:
sensing pressure information of a tire at a pressure sensing device at a tire pressure monitoring (TPM) sensor;
storing the sensed pressure information at a transmission buffer at the TPM sensor and sending the sensed pressure information to a vehicle control unit in a vehicle via the transmission buffer and a transmitter circuit;
transmitting first messages directly to other sensors via the transmission buffer and a transmitter circuit at the TPM sensor; and
directly receiving second messages from the other sensors via a receiver circuit at the TPM sensor;
wherein the TPM sensor is configured to operate as a teacher sensor to the other sensors, and wherein the first messages sent by the TPM sensor to the other sensors include validity information that ensure that an incorrect transmission protocol is not selected or utilized by the other sensors.

9. The method of claim 8 , wherein the validity information includes centripetal acceleration information from the TPM sensor, pressure information from the TPM sensor, and temperature information from the TPM sensor.

10. The method of claim 8 , wherein the TPM sensor is configured to receive the second messages from another teacher TPM sensor and to determine a transmission protocol based upon the second messages, and wherein the second messages sent by the another teacher TPM sensor include second validity information and wherein the second validity information is utilized by the TPM sensor to ensure that an incorrect transmission protocol is not selected or utilized by the TPM sensor.

11. The method of claim 10 , wherein the second validity information includes centripetal acceleration information from the another TPM teacher sensor, pressure information from the another TPM teacher sensor, and temperature information from the another TPM teacher sensor.

12. The method of claim 8 , wherein the transmitted first messages and received second messages utilize one or more of the Bluetooth protocol, the Bluetooth low energy (BLE) protocol, or radio frequency (RP) communications.

13. The method of claim 8 , further comprising providing a memory storage device at the TPM sensor, the memory storage device including a plurality of protocols.

14. A computer readable non-transitory medium having a computer readable program code embodied therein, the computer readable program code adapted to be executed to implement a method of operating a tire pressure monitoring system, the method comprising:
sensing pressure information of a tire at a pressure sensing device at a tire pressure monitoring (TPM) sensor;
storing the sensed pressure information at a transmission buffer at the TPM sensor and sending the sensed pressure information to a vehicle control unit in a vehicle via the transmission buffer and a transmitter circuit;
transmitting first messages directly to other sensors via the transmission buffer and a transmitter circuit at the TPM sensor; and
directly receiving second messages from the other sensors via a receiver circuit at the TPM sensor;
wherein the TPM sensor is configured to operate as a teacher sensor to the other sensors, and wherein the first messages sent by the TPM sensor to the other sensors includes first validity information that ensure that an incorrect transmission protocol is not selected or utilized by the other sensors.

15. The computer readable non-transitory medium of claim 14 , wherein the first validity information includes centripetal acceleration information from the TPM sensor, pressure information from the TPM sensor, and temperature information from the TPM sensor.

16. The computer readable non-transitory medium of claim 14 , wherein the TPM sensor is configured to receive the second messages from another teacher TPM sensor and to determine a transmission protocol based upon the second messages, and wherein the second messages sent by the another teacher TPM sensor include second validity information and wherein the second validity information is utilized by TPM sensor to ensure that an incorrect transmission protocol is not selected or utilized by the TPM sensor.

17. The computer readable non-transitory medium of claim 16 , wherein the second validity information includes centripetal acceleration information from the another TPM teacher sensor, pressure information from the another TPM teacher sensor, and temperature information from the another TPM teacher sensor.

18. The computer readable non-transitory medium of claim 14 , wherein the transmitted first messages and received second messages utilize one or more of the Bluetooth protocol, the Bluetooth low energy (BLE) protocol, or radio frequency (RF) communications.

Assignees

• Continental automotive systems inc

Inventors

• Mcintyre Matthew D
• Deniau Jean-Christophe
• Hillawi Brian

Classifications

• H04W84/18

  Self-organising networks, e.g. ad-hoc networks or sensor networks · CPC title

• B60C23/045

  Means for detecting electromagnetic field changes being not part of the signal transmission per se, e.g. strength, direction, propagation or masking · CPC title

• B60C23/0462 Primary

  Structure of transmission protocol · CPC title

• B60C23/0488

  Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force · CPC title

• B60C23/0474

  Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring · CPC title