METHODS FOR SELF-POSITIONING TIRES, AND TIRE PRESSURE MONITORING SYSTEM

• US 20180208001A1
• Filed: 01/04/2018
• Published: 07/26/2018
• 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
• Granted Patent: US 10,328,754 B2
• Time in Patent Office: 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 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.

2. The method according to claim 1, wherein the acquiring the second position information of each emitter respectively via the corresponding second positioning circuit comprises:

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

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

3. The method according to claim 2, further comprising:

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

4. The method according to claim 3, wherein a first frequency is adopted in the first communication mode and a second frequency is adopted in the second communication mode, and the first frequency is larger than the second frequency.

5. The method according to claim 4, wherein the first frequency is 125 kHz, and the second frequency is 868 MHz.

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

7. The method according to claim 1, further composing:

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.

8. 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.

9. 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; and

receiving and storing relative position information between the receiver and the emitter;

wherein the relative position information is acquired based on first position information detected by the first positioning circuit and the second position information.

10. The method according to claim 9, further comprising:

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

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

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

receiving the relative position information in the first communication mode.

11. The method according to claim 10, wherein a first frequency is adopted in the first communication mode and a second frequency is adopted in the second commun cation mode and the first frequency is larger than the second frequency

12. The method according to claim 11, wherein the first frequency is 125 kHz, and the second frequency is 868 MHz.

13. The method according to claim 11, wherein the first frequency is 125 kHz, and the second frequency is 433MHz.

14. The method according to claim 9, 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.

15. 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.