Methods for self-positioning tires, and tire pressure monitoring system

• US 10,328,754 B2
• Filed: 01/04/2018
• Issued: 06/25/2019
• Est. Priority Date: 01/20/2017
• Status: Active Grant

• Current Assignee: Autochips Wuhan Company Limited
• Original Assignee: AutoChips INC. (Navinfo Company Limited)
• Inventors: Zhou, Jian
• Primary Examiner(s): Alam, Mirza F
• Application Number:
  US15/861,706
• Publication Number:
  US 20180208001A1
• Time in Patent Office: 537 Days
• CPC Class Codes: B60C 23/0416 allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
• CPC Class Codes: B60C 23/044 Near field triggers, e.g. magnets or triggers with 125 KHz
• CPC Class Codes: B60C 23/0449 Passive transducers, e.g. using surface acoustic waves, backscatter technology or pressure sensitive resonators near field passive transducers B60C23/0428
• CPC Class Codes: B60C 23/0455 Transmission control of wireless signals
• CPC Class Codes: B60C 23/0493 for attachment on the tyre

Abstract

A method for self-positioning tires and a tire pressure monitoring system are provided. The method for self-positioning tires includes: acquiring first position information detected by the first positioning circuit; acquiring second position information of each emitter respectively via corresponding second positioning circuit; and acquiring corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter. In this way, compared with the method for achieving self-positioning function in the art, extra wires may not be needed and the origin wires of a vehicle may not be altered in the method of the present disclosure.

Claims

1. A method for self-positioning tires implemented by a receiver in a vehicle, wherein a first positioning circuit is provided in the receiver, an emitter is provided in each tire of the vehicle and a second positioning circuit is provided in each emitter respectively, the method comprising:

acquiring first position information detected by the first positioning circuit;

acquiring second position information of each emitter respectively via the corresponding second positioning circuit; and

acquiring corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter;

wherein the step of acquiring second position information of each emitter respectively via the corresponding second positioning circuit, comprises;

transmitting a first control instruction to each emitter respectively by the receiver in a first communication mode, so that the each emitter controls the corresponding second positioning circuit to power on according to the first control instruction; and

receiving the second position information respectively transmitted in a second communication mode by each emitter and acquired via the powered-on second positioning circuit;

wherein the first communication mode works in a first frequency, the second communication mode works in a second frequency, and the first frequency is lower than the second frequency.

2. The method according to claim 1, after the step of acquiring corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter, the method further comprising:

transmitting corresponding relative position information to each emitter in the first communication mode respectively by the receiver.

3. The method according to claim 1, wherein the first frequency is 125 kHz, and the second frequency is 868 MHz.

4. The method according to claim 1, wherein the first frequency is 125 kHz, and the second frequency is 433 MHz.

5. The method according to claim 1, further comprising:

transmitting a second control instruction to each emitter respectively when the first position information is not acquired by the first positioning circuit, such that each emitter controls corresponding second positioning circuit to power down respectively.

6. The method according to claim 1, wherein before the acquiring first position information detected by the first positioning circuit, the method comprises:

powering on the first positioning circuit when the receiver is powered on.

7. A method for self-positioning tires implemented by an emitter provided in a tire, wherein a second positioning circuit is provided in the emitter and a first positioning circuit is provided in a receiver provided in a vehicle, comprising:

acquiring second position information via the second positioning circuit;

transmitting the second position information to the receiver, wherein the receiver is configured to receive the second position information and acquire first position information detected by the first positioning circuit in the receiver, and then acquire relation position information between the receiver and the emitter; and

receiving and storing the relative position information by the emitter from the receiver;

wherein the step of acquiring second position information via the second positioning circuit, comprises;

receiving a first control instruction from the receiver in a first communication mode, thereby controlling the second positioning circuit to power on according to the first control instruction; and

detecting the second position information via the powered-on second positioning circuit;

transmitting the second position information to the receiver in a second communication mode;

wherein the first communication mode works in a first frequency, the second communication mode works in a second frequency, and the first frequency is lower than the second frequency.

8. The method according to claim 7, wherein

the emitter receives the relative position information in the first communication mode.

9. The method according to claim 7, wherein the first frequency is 125 kHz, and the second frequency is 868 MHz.

10. The method according to claim 7, wherein the first frequency is 125 kHz, and the second frequency is 433 MHz.

11. The method according to claim 7, wherein the transmitting the second position information to the receiver further comprises:

receiving a second control instruction from the receiver when the first position information has been not acquired via the first positioning circuit, thereby controlling the second positioning circuit to power down.

12. A tire pressure monitoring system comprising a receiver provided in a vehicle and an emitter provided in each tire respectively, wherein the receiver comprises:

a first positioning circuit configured to acquire first position information;

a first transceiver configured to transmit a first control instruction respectively to each emitter to wake up each emitter, thereby acquiring second position information of each emitter via corresponding second positioning circuit; and

a processing circuit configured to acquire corresponding relative position information respectively between the receiver and each emitter based on the first position information of the receiver and the second position information of each emitter;

each emitter comprises;

a second positioning circuit configured to acquire the second position information; and

a second transceiver configured to transmit the second position information to the receiver and receive corresponding relative position information;

wherein the second transceiver of each emitter is further configured to receiving a first control instruction from the receiver in a first communication mode, thereby controlling the second positioning circuit to power on according to the first control instruction, such that the powered-on second positioning circuit detects the second position information and transmits the second position information to the receiver in a second communication mode; and

the first communication mode works in a first frequency, the second communication mode works in a second frequency, and the first frequency is lower than the second frequency.