Search

CN-121986030-A - Identification method of vehicle tire pressure sensor

CN121986030ACN 121986030 ACN121986030 ACN 121986030ACN-121986030-A

Abstract

The invention relates to a method (Pr 1) for identifying a pressure sensor (1) of a tyre (2) of a vehicle (3), said method (Pr 1) comprising-transmitting an activation signal (s 1) to said pressure sensor (1) via an activation device (5) of said pressure sensor (1), said activation signal (s 1) being a low frequency radio frequency signal, characterized in that said method (Pr 1) further comprises-receiving, by an electronic device (4), after transmission of said activation signal (s 1), a return radio frequency signal (s 2) transmitted by said pressure sensor (1), said return radio frequency signal (s 2) being a radio frequency signal transmitted at a frequency of 2.4GHz to 2.5 GHz.

Inventors

  • Bruno Rousseau

Assignees

  • 亚德克

Dates

Publication Date
20260505
Application Date
20241126
Priority Date
20231129

Claims (14)

  1. 1. A method (Pr 1) of identifying a pressure sensor (1) of a tire (2) of a vehicle (3), the identifying method (Pr 1) comprising: -transmitting an activation signal (s 1) to the pressure sensor (1) via an activation means (5) of the pressure sensor (1), the activation signal (s 1) being a low frequency radio frequency signal; Characterized in that the identification method (Pr 1) further comprises: -receiving, by an electronic device (4), a return radio frequency signal (s 2) transmitted by the pressure sensor (1) after transmission of the activation signal (s 1), the return radio frequency signal (s 2) being a radio frequency signal transmitted at a frequency of 2.4GHz to 2.5 GHz.
  2. 2. The identification method (Pr 1) according to claim 1, wherein the return radio frequency signal (s 2) is received according to a bluetooth low energy (Bluetooth Low Energy TM ) communication protocol.
  3. 3. The identification method (Pr 1) according to any of the preceding claims, wherein said identification method (Pr 1) further comprises sending, by said electronic device (4), information (i 1, i2, i 3) contained in said return radio frequency signal (s 2) to said activation means (5).
  4. 4. The identification method (Pr 1) according to any of the preceding claims, wherein said identification method (Pr 1) further comprises storing information (i 1, i2, i 3) contained in said return radio frequency signal (s 2) into a memory.
  5. 5. The identification method (Pr 1) according to any of the preceding claims, wherein said identification method (Pr 1) further comprises associating the position (p 1) of the corresponding tyre (2) with the information (i 1, i2, i 3) contained in said return radio frequency signal (s 2).
  6. 6. The identification method (Pr 1) according to any of the preceding claims, wherein said identification method (Pr 1) further comprises displaying information (i 1, i2, i 3) contained in said return radio frequency signal (s 2).
  7. 7. Identification method (Pr 1) according to any of the preceding claims, wherein said return radio frequency signal (s 2) comprises identification information (i 1) of said pressure sensor (1), pressure information (i 2) and/or temperature information (i 3) of said tyre (2).
  8. 8. The identification method (Pr 1) according to any of the preceding claims, wherein said identification method (Pr 1) further comprises switching by said electronic device (4) to a receiving mode (m 1) for receiving said return radio frequency signal (s 2) sent by said pressure sensor (1).
  9. 9. The identification method (Pr 1) according to any of the preceding claims, wherein the electronic device (4) is a mobile phone, a tablet computer or a computer.
  10. 10. The identification method (Pr 1) according to any of the preceding claims, wherein said identification method (Pr 1) further comprises: -displaying, by said activation means (5), a first command (i 4), said first command (i 4) indicating the start of the execution flow required by said pressure sensor (1) for identifying a tyre (2); -displaying, by said electronic device (4), a second instruction (i 4 '), said second instruction (i 4') indicating a subsequent step of the execution flow required to identify said pressure sensor (1) of tyre (2).
  11. 11. A method (Pr 2) for pairing a pressure sensor (1) of a tyre (2) of a vehicle (3) with an electronic control unit (30) of said vehicle (3), characterized in that said pairing method (Pr 2) comprises: -performing the identification method (Pr 1) according to any of the preceding claims for each pressure sensor (1) of each tyre (2) of the vehicle (3); -pairing the pressure sensor (1) with the electronic control unit (30) of the vehicle (3) by means of the identification information (i 1) of the pressure sensor (1) and the position (p 1) of its corresponding tyre (2).
  12. 12. An electronic device (4), characterized in that the electronic device (4) is configured to: -switching to a receiving mode (m 1) to receive a return radiofrequency signal (s 2) transmitted by a pressure sensor (1) of a tyre (2) of a vehicle (3), said return radiofrequency signal (s 2) being a signal transmitted at a frequency of 2.4GHz to 2.5 GHz; -receiving said return radio frequency signal (s 2) from said pressure sensor (1).
  13. 13. A system (6) for identifying a pressure sensor (1) of a tyre (2) of a vehicle (3), characterized in that the identification system (6) comprises: -an activation device (5) of the pressure sensor (1), the activation device (5) being configured to send an activation signal (s 1) to the pressure sensor (1), the activation signal (s 1) being a low frequency signal, and -An electronic device (4) according to the preceding claim.
  14. 14. Computer program product (Pg) comprising one or more sequences of instructions executable by an information processing unit, which sequences of instructions, when loaded into an electronic device (4), perform the steps of: -switching to a receiving mode (m 1) to receive a return radiofrequency signal (s 2) transmitted by a pressure sensor (1) of a tyre (2) of a vehicle (3), said return radiofrequency signal (s 2) being a signal transmitted at a frequency of 2.4GHz to 2.5 GHz; -receiving said return radio frequency signal (s 2).

Description

Identification method of vehicle tire pressure sensor Technical Field The invention relates to a method for identifying a tire pressure sensor of a vehicle. The invention also relates to a system for activating a vehicle tire pressure sensor, which system enables the identification method to be implemented. The invention also relates to a method for pairing a vehicle tire pressure sensor with an electronic control unit of the vehicle. The invention has particular, but not exclusive, application in the automotive field. Background In the field of vehicles, in particular motor vehicles, a method for identifying a vehicle tire pressure sensor known to a person skilled in the art comprises: -transmitting an activation signal to the pressure sensor by means of an activation device of the pressure sensor, said activation signal being a low frequency radio frequency signal, for example transmitted at 125 kHz; -receiving by the activation device a return radio frequency signal sent by the pressure sensor, the return radio frequency signal being a high frequency signal, for example sent at 433MHz or 315 MHz. The activation device is a tire pressure monitoring tool, also known as a TPMS ("tire pressure monitoring system"). The activation device is capable of communicating with an electronic tire pressure monitoring system (also referred to as a TPMS) comprising an electronic control unit mounted in the vehicle, and one or more pressure sensors arranged inside the tire, configured to measure the internal pressure of the tire, and to transmit pressure information, among other things, to the electronic control unit of the vehicle. In this way, if one of the tyres is pierced or deflated, the electronic control unit can alert the vehicle user, avoiding any risk to its safety. One disadvantage of the prior art is that a new generation of pressure sensors is being marketed. These new pressure sensors integrate technology that can send return radio frequency signals between 2.4GHz and 2.5GHz instead of high frequency radio frequency signals. However, existing activation devices are not suitable for these new generation pressure sensors. Disclosure of Invention Against this background, the present invention aims to provide a method for identifying a vehicle tire pressure sensor, which method is capable of solving at least one of the above-mentioned drawbacks. To this end, the invention proposes a method for identifying a vehicle tire pressure sensor, the identification method comprising: -transmitting an activation signal to the pressure sensor by means of an activation device of the pressure sensor, the activation signal being a low frequency radio frequency signal; the identification method is characterized by further comprising the following steps: -receiving, by an electronic device, a return radio frequency signal transmitted by the pressure sensor after transmission of the activation signal, the return radio frequency signal being a radio frequency signal transmitted at a frequency in the range of 2.4GHz to 2.5 GHz. Thus, as will be shown in detail later, by means of the electronic device, a return radio frequency signal transmitted by the pressure sensor at a frequency in the range of 2.4GHz to 2.5GHz can be received. Existing activation devices do not require new communication modules to be added or replaced. Thus, the identification method reduces costs and is environmentally friendly and responsible because existing activation devices are not discarded. According to non-limiting embodiments, the method for identifying a vehicle tire pressure sensor may further comprise one or more additional features selected from the following features, which may be employed alone or in any technically feasible combination. According to one non-limiting embodiment, the return radio frequency signal is transmitted at a frequency within the 2.4GHz ISM band. According to one non-limiting embodiment, the return radio frequency signal is received according to a bluetooth low energy (Bluetooth Low Energy TM) communication protocol. According to one non-limiting embodiment, the identification method further comprises transmitting, by the electronic device, information contained in the return radio frequency signal to the activation device. According to one non-limiting embodiment, the identification method further comprises storing information contained in the return radio frequency signal in a memory. According to one non-limiting embodiment, this information is stored by the electronic device and/or the activation means. According to one non-limiting embodiment, the identification method further comprises associating the position of the corresponding tyre with the information contained in the return radio frequency signal. According to one non-limiting embodiment, the position is manually entered by an operator or determined according to a predetermined activation sequence of the pressure sensors in a set of tire pressure sensors of the