Method for identifying wheel to which each tire pressure detector belongs

Abstract

The invention relates to a method for identifying a wheel to which each tire pressure detector belongs. The method comprises the following steps of: calculating a rotating speed value of a corresponding wheel by each tire pressure detector; the automobile electronic control unit reads the information of the ABS gear of each wheel; each tire pressure detector sets the same target angle position, calculates the time value required for reaching the target angle position according to the rotating speed value of the corresponding wheel, and wirelessly transmits a packet of the calculated time value to the automobile electronic control unit; and according to the time values transmitted by the tire pressure detectors, when the time value transmitted by any tire pressure detector arrives, the automobile electronic control unit reads the corresponding tooth value of the ABS gear of each wheel and the target angle position, and operates the numerical control unit to identify the wheel to which each tire pressure detector belongs.

Description

TECHNICAL FIELD

[0001] The present application relates to a method for identifying the wheel to which each tire pressure detector belongs, so as to facilitate the host computer and the owner of the vehicle to identify the current tire pressure value of each wheel. BACKGROUND

[0002] The tire pressure value is an important value for the safety of the vehicle, and with the development of technology, the way of detecting the tire pressure value of each wheel has also changed significantly. From the previous manual measurement of each wheel, to the current automatic measurement by various electronic devices and transmission to the monitoring screen for display, not only is it easier for the owner to identify, but the electronic value can also be used in conjunction with the host computer to set the alarm value.

[0003] Among the more common electronic devices are tire pressure detectors, which have built-in components for detecting tire pressure, and electronic modules powered by batteries that can share information with matching host computers to facilitate the host computer to read the values of the tire pressure detectors and for the user to view the tire pressure values on the host computer.

[0004] Generally, a conventional vehicle has four wheels, so four tire pressure detectors need to be installed on the left front wheel, the right front wheel, the left rear wheel, and the right rear wheel. However, the four tire pressure detectors are identical products, making it difficult for the host computer to identify the values of each tire pressure detector in the left front wheel, the right front wheel, the left rear wheel, and the right rear wheel. Based on the characteristics of the vehicle, the optimal tire pressure values of the front and rear wheels are different, so it is necessary for the host computer to correctly identify the wheel to which each tire pressure detector belongs in order to set the alarm value for the tire pressure value or for the owner to correctly identify the tire pressure value. SUMMARY

[0005] To achieve the identification of the wheel to which each tire pressure detector belongs, the present application mainly uses the information of the ABS gear to identify the wheel to which each tire pressure detector belongs. The time point at which the automobile electronic control unit reads the information of the ABS gear of each wheel through the controller is the time value required for each tire pressure detector to reach the target angle position, which is recorded by the automobile electronic control unit as the time point for reading the information of the ABS gear of each wheel, thereby achieving the purpose of identifying the wheel to which each tire pressure detector belongs.

[0006] To achieve the above object, a method for identifying the wheel to which each tire pressure detector belongs, comprising the following steps: each tire pressure detector calculates the rotation speed value of the corresponding wheel; the automobile electronic control unit reads the information of the ABS gear of each wheel; each tire pressure detector sets the same target angle position, each tire pressure detector calculates the time value required to reach the target angle position according to the rotation speed value of the corresponding wheel, each tire pressure detector wirelessly transmits the calculated time value to the automobile electronic control unit in a packet, and the automobile electronic control unit identifies the wheel to which each tire pressure detector belongs according to the time value transmitted by each tire pressure detector, when the time value transmitted by any tire pressure detector arrives, the automobile electronic control unit reads the corresponding tooth number value of the ABS gear of each wheel and the target angle position, and according to the fact that the corresponding tooth number of each tire pressure detector appears concentrated in a specific tooth number interval or presents a divergent state, the automobile electronic control unit identifies the wheel to which each tire pressure detector belongs. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 The schematic diagram of the vehicle system structure of the present application; Figure 2 The example diagram for illustrating that each tire pressure detector calculates the time value required to reach the target angle position according to the rotation speed value of the corresponding wheel; Figure 3 The schematic diagram for illustrating that the tire pressure detector of the right front wheel reaches the target angle position; Figure 4 The schematic diagram for illustrating that the tire pressure detector of the right rear wheel reaches the target angle position; Marking description in the figure: 1 tire pressure detector 2 automobile electronic control unit 3 controller 4 ABS gear 5 target angle position DETAILED DESCRIPTION

[0008] For a more detailed understanding of the embodiments of the present application, please refer to the accompanying drawings. The present application provides a way to identify the wheel to which each tire pressure detector belongs, which includes the following steps: each tire pressure detector 1 calculates the rotation speed value of the corresponding wheel; the automobile electronic control unit 2 (ECU, Electronic Control Unit, vehicle main machine) reads the information of the ABS gear 4 (ABS is the abbreviation of Anti-Lock Brake System, Anti-Lock Brake System) of each wheel (for example, reading through the controller 3; the controller 3 can be the ABS controller in the ABS system); each tire pressure detector 1 sets the same target angle position 5, each tire pressure detector 1 calculates the time value (T) required to reach the target angle position 5 according to the rotation speed value of the corresponding wheel, each tire pressure detector 1 respectively transmits the calculated time value to the automobile electronic control unit 2 through wireless packet, the automobile electronic control unit 2 according to the time value transmitted by each tire pressure detector 1, when the time value transmitted by any tire pressure detector 1 arrives, the automobile electronic control unit 2 reads the corresponding tooth number value of the ABS gear 4 and the target angle position 5 of each wheel, the operation number piece (the operation number piece can be located inside the automobile electronic control unit 2 or the computer connected with the automobile electronic control unit 2, inside the controller 3) obtains several corresponding tooth number values, and according to the fact that the corresponding tooth number of each tire pressure detector 1 concentrates in a certain tooth number interval or presents a divergent state, identifies the wheel to which each tire pressure detector 1 belongs.

[0009] The tire pressure detector of the present application can be a gas nozzle type tire pressure detector TPM (Tire Pressure Monitoring) sensor; a skin type detector TMS (Tire Mount Sensor).

[0010] In further detail of the embodiments of the present application, the present application is to identify the wheel to which each tire pressure detector 1 belongs, mainly by using the information of the ABS gear 4. The time point at which the automobile electronic control unit 2 reads the information of the ABS gear 4 of each wheel is by using the time value required for each tire pressure detector 1 to reach the target angle position 5 as the time point at which the automobile electronic control unit 2 records the information of the ABS gear 4 of each wheel, so as to achieve the purpose of identifying the wheel to which each tire pressure detector 1 belongs. As shown in the second figure, the target angle position 5 is taken as an example of 270 degrees, the tire pressure detector 1 of the right front wheel will reach the target angle position 5 after 6 ms, and the tire pressure detector 1 of the right rear wheel will reach the target angle position 5 after 10 ms. That is, the automobile electronic control unit 2 will record the corresponding tooth value of each ABS gear 4 and the target angle position 5 after 6 ms and 10 ms, respectively. Taking the example of the tire pressure detector ID of the right front wheel and the tire pressure detector ID of the right rear wheel, after 6 ms, as shown in the third figure, the automobile electronic control unit 2 will record a piece of data of the corresponding tooth value of each ABS gear 4 and the target angle position 5 and mark it as ID3. After 4 ms, as shown in the fourth figure, the automobile electronic control unit 2 will record a piece of data of the corresponding tooth value of each ABS gear 4 and the target angle position 5 and mark it as ID4. In this way, when the automobile electronic control unit 2 records several pieces of data, it will be as shown in the following table. At this time, the recorded values of the tire pressure detector 1 of ID4 when it reaches the target angle position 5 are all the second tooth, and the corresponding tooth value of the ABS gear 4 and the target angle position 5 recorded by the RR right rear wheel is the second tooth. In this way, it can be identified that the tire pressure detector 1 of ID4 is located in the right rear wheel. The reason is that the relative position of the tire pressure detection and the corresponding ABS gear will not change, so when the tire pressure detector 1 reaches the target angle position 5 each time, the corresponding tooth value of the ABS gear 4 and the target angle position 5 of the wheel will not change in theory. The values of other wheels will be random values without rules due to differences in steering, tire pressure value, positioning, etc. during vehicle travel, resulting in different speeds of each wheel. In this way, the automobile electronic control unit 2 can correctly determine the position of each tire pressure detector 1. However, since the present application uses the time value required for each tire pressure detector 1 to reach the target angle position 5 as the time point for recording data, there will be some error values in the recorded data. For example, taking the ABS gear 4 of 50 teeth as an example, the recorded tooth value of the tire pressure detector 1 of ID4 about the RR right rear wheel when it reaches the target angle position 5 may be 15, 14, or 16. However, this slight deviation will not affect the identification compared to the huge random number difference of each value of other wheels. ID4's tire pressure detector 1 reaches the target angle position 5, the recorded values are all the second tooth, and the corresponding tooth value of the ABS gear 4 and the target angle position 5 recorded by the RR right rear wheel is the second tooth. In this way, it can be identified that the tire pressure detector 1 of ID4 is located in the right rear wheel. The reason is that the relative position of the tire pressure detection and the corresponding ABS gear will not change, so when the tire pressure detector 1 reaches the target angle position 5 each time, the corresponding tooth value of the ABS gear 4 and the target angle position 5 of the wheel will not change in theory. The values of other wheels will be random values without rules due to differences in steering, tire pressure value, positioning, etc. during vehicle travel, resulting in different speeds of each wheel. In this way, the automobile electronic control unit 2 can correctly determine the position of each tire pressure detector 1. However, since the present application uses the time value required for each tire pressure detector 1 to reach the target angle position 5 as the time point for recording data, there will be some error values in the recorded data. For example, taking the ABS gear 4 of 50 teeth as an example, the recorded tooth value of the tire pressure detector 1 of ID4 about the RR right rear wheel when it reaches the target angle position 5 may be 15, 14, or 16. However, this slight deviation will not affect the identification compared to the huge random number difference of each value of other wheels.

[0011] In practice, the tire pressure detector 1 can detect the current angle and rotation speed of the corresponding wheel by using an acceleration sensor.

[0012] The target angle position 5 set by the tire pressure detector 1 can be remotely modified by a wireless matching device, such as a car electronic control unit 2, a mobile phone device, a computer, or the like, which is connected to the tire pressure detector 1 by using Bluetooth or other wireless communication means.

Claims

1. A method for identifying the wheel to which each tire pressure monitor belongs, comprising the steps of: each tire pressure monitor calculates the rotational speed value of the corresponding wheel; the electronic control unit of the vehicle reads the information of the ABS gear of each wheel; each tire pressure monitor sets the same target angular position, each tire pressure monitor calculates the time value required to reach the target angular position according to the rotational speed value of the corresponding wheel, each tire pressure monitor wirelessly transmits the calculated time value to the electronic control unit of the vehicle, the electronic control unit of the vehicle reads the corresponding tooth number value of the ABS gear of each wheel and the target angular position according to the time value transmitted by each tire pressure monitor, when the time value transmitted by any tire pressure monitor arrives, the electronic control unit of the vehicle operates the computer, controller, etc. to obtain a plurality of corresponding tooth number values, and identifies the wheel to which each tire pressure monitor belongs according to the state in which the corresponding tooth number of each tire pressure monitor is concentrated in a specific tooth number interval or is divergent.

2. The method for identifying the wheel to which each tire pressure monitor belongs according to claim 1, wherein each tire pressure monitor detects the current angle of the corresponding wheel by using an acceleration sensor.

3. The method for identifying the wheel to which each tire pressure monitor belongs according to claim 1, wherein each tire pressure monitor detects the rotational speed value by using an acceleration sensor.

4. The method for identifying the wheel to which each tire pressure monitor belongs according to claim 1, wherein the electronic control unit of the vehicle reads the information of the ABS gear of each wheel through a controller.

5. The method for identifying the wheel to which each tire pressure monitor belongs according to claim 1, wherein the target angular position set by each tire pressure monitor can be remotely modified by a wireless matching device.

6. The method for identifying the wheel to which each tire pressure monitor belongs according to claim 1, wherein the computer, controller, etc. connected to the electronic control unit of the vehicle or located inside the electronic control unit of the vehicle is operated.

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