Tire pressure monitoring system (TPMS) module, system and method of acknowledging data transmissions for TPMS

• US 10,206,231 B1
• Filed: 01/23/2018
• Issued: 02/12/2019
• Est. Priority Date: 01/23/2018
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Kandler, Michael, Scheibenzuber, Wolfgang, Werner, Maximilian
• Primary Examiner(s): Nguyen, Simon
• Application Number:
  US15/877,740
• Time in Patent Office: 385 Days
• CPC Class Codes: B60C 23/0422 characterised by the type of signal transmission means
• 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
• CPC Class Codes: B60C 23/0484 Detecting an ongoing tyre inflation
• CPC Class Codes: H04B 1/3822 specially adapted for use in vehicles H04B1/3827 takes precedence
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04Q 2209/43 using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee
• CPC Class Codes: H04Q 2209/883 where the sensing device enters an active or inactive mode
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A tire pressure monitoring system (TPMS) and TPMS sensor module are provide. The TPMS sensor module includes a pressure sensor configured to measure an internal air pressure of a tire and generate tire pressure information, a microcontroller unit electrically connected to the pressure sensor, and a transceiver electrically connected to the microcontroller unit, the transceiver configured to transmit a message including the pressure information, further configured to receive an acknowledgement in response to the transmitted message. Where, on a condition that the transceiver receives the acknowledgement, the microcontroller unit is configured to set the transceiver into a standby mode, and, where, on a condition that the transceiver does not receive the acknowledgement, the microcontroller unit is configured to instruct the transceiver to transmit a redundant message that is redundant to the transmitted message, and the transceiver is configured to transmit the redundant message.

Claims

1. A tire pressure monitoring system (TPMS) sensor module, comprising:

a pressure sensor configured to measure an internal air pressure of a tire and generate tire pressure information;

a microcontroller unit electrically connected to the pressure sensor; and

a transceiver electrically connected to the microcontroller unit, the transceiver configured to transmit a message including the pressure information, further configured to receive an acknowledgement in response to the transmitted message,

wherein, on a condition that the transceiver receives the acknowledgement, the microcontroller unit is configured to set the transceiver into a standby mode, and

wherein, on a condition that the transceiver does not receive the acknowledgement, the microcontroller unit is configured to instruct the transceiver to transmit a redundant message that is redundant to the transmitted message, and the transceiver is configured to transmit the redundant message.

2. The TPMS sensor module of claim 1, wherein the transceiver is a Bluetooth transceiver, and the message and the acknowledgement are provided in Bluetooth transmissions.

3. The TPMS sensor module of claim 2, wherein the Bluetooth transceiver configured to operate in a Bluetooth advertising mode for transmitting the message and receiving the acknowledgement.

4. The TPMS sensor module of claim 1, wherein on the condition that the transceiver receives the acknowledgement, the microcontroller unit is configured to set the transceiver into the standby mode for a predetermined time period.

5. The TPMS sensor module of claim 4, wherein:

upon expiration of the predetermined time period, the microcontroller unit is configured to enable the transceiver, and

the transceiver is configured to transmit an update message including an update to the tire pressure information, and further configured to receive another acknowledgement in response to the transmitted update message,

wherein, on a condition that the transceiver receives the other acknowledgement, the microcontroller unit is configured to set the transceiver into the standby mode, and

wherein, on a condition that the transceiver does not receive the other acknowledgement, the microcontroller unit is configured to instruct the transceiver to transmit a redundant update message that is redundant to the transmitted update message, and the transceiver is configured to transmit the redundant update message.

6. The TPMS sensor module of claim 1, wherein:

the transceiver is configured to transmit the redundant message up to a maximum number of times, and

on a condition the acknowledgment is not received in response to the redundant message transmitted up to the maximum number of times, the microcontroller unit is configured to disable the transceiver for a delay period.

7. The TPMS sensor module of claim 1, wherein:

the acknowledgement includes a request to enter a connected mode, and

on a condition that the acknowledgement includes the request to enter the connected mode, the microcontroller unit is configured to override entering into the standby mode, and instruct the transceiver to enter the connected mode.

8. The TPMS sensor module of claim 7, wherein the acknowledgement that includes the request to enter the connected mode further includes an identifier that is exclusive to the TPMS sensor module.

9. The TPMS sensor module of claim 1, wherein:

the acknowledgement includes a request for data, and

on a condition that the acknowledgement includes the request for data, the microcontroller unit is configured to override entering into the standby mode, and instruct the transceiver to transmit the data requested.

10. The TPMS sensor module of claim 1, wherein:

the acknowledgement includes an originator identifier corresponding to an originator of the acknowledgement, and

the microcontroller is configured to add the originator identifier to a trusted device list.

11. A tire pressure monitoring system (TPMS), comprising:

a TPMS sensor module including a first transceiver configured to transmit a message including tire pressure information;

a vehicle control unit including a second transceiver configured to receive the message, and further configured to transmit an acknowledgement in response to the received message,

wherein, on a condition that the first transceiver receives the acknowledgement, the TPMS sensor module is configured to set the first transceiver into a standby mode, and

wherein, on a condition that the first transceiver does not receive the acknowledgement, the TPMS sensor module is configured to instruct the first transceiver to transmit a redundant message that is redundant to the transmitted message, and the first transceiver is configured to transmit the redundant message to the vehicle control unit.

12. The TPMS of claim 11, wherein the first transceiver and the second transceiver are a Bluetooth transceivers configured to communicate with each other via Bluetooth transmissions.

13. The TPMS of claim 12, wherein the first transceiver and the second transceiver are configured to operate in a Bluetooth advertising mode for exchanging the message and the acknowledgement.

14. The TPMS of claim 11, wherein on the condition that the first transceiver receives the acknowledgement, the TPMS sensor module is configured to set the first transceiver into the standby mode for a predetermined time period.

15. The TPMS of claim 14, wherein:

upon expiration of the predetermined time period, the TPMS sensor module is configured to enable the first transceiver, and the first transceiver is configured to transmit an update message including an update to the tire pressure information, and

the second transceiver is configured to receive the update message, and further configured to transmit another acknowledgement in response to the received update message,

wherein, on a condition that the first transceiver receives the other acknowledgement, the TPMS sensor module is configured to set the first transceiver into the standby mode, and

wherein, on a condition that the first transceiver does not receive the other acknowledgement, the TPMS sensor module is configured to instruct the first transceiver to transmit a redundant update message that is redundant to the transmitted update message, and the first transceiver is configured to transmit the redundant update message.

16. The TPMS of claim 11, wherein:

the first transceiver is configured to transmit the redundant message up to a maximum number of times, and

on a condition the first transceiver does not receive the acknowledgment in response to the redundant message transmitted up to the maximum number of times, the TPMS sensor module is configured to disable the first transceiver for a delay period.

17. The TPMS of claim 11, wherein:

the acknowledgement includes a request to enter a connected mode, and

on a condition that the acknowledgement includes the request to enter the connected mode, the TPMS sensor module is configured to override entering into the standby mode, and enter into the connected mode with the vehicle control unit.

18. The TPMS of claim 17, wherein the acknowledgement that includes the request to enter the connected mode further includes an identifier that is exclusive to the TPMS sensor module.

19. The TPMS of claim 11, wherein:

the acknowledgement includes a request for data, and

on a condition that the acknowledgement includes the request for data, the TPMS sensor module is configured to override entering into the standby mode, and instruct the first transceiver to transmit the data requested to the vehicle control unit.

20. The TPMS of claim 11, wherein:

the acknowledgement includes an identifier of the vehicle control unit, and

the microcontroller is configured to add the identifier of the vehicle control unit to a trusted device list.