Method for identifying wheel to which each tire pressure measuring device belongs

Abstract

To provide a method for identifying a wheel to which each tire pressure measuring device belongs by which a computer for vehicle and a vehicle owner can identify a current tire pressure value of each wheel.SOLUTION: A method for identifying a wheel to which each tire pressure measuring device belongs includes a step at which corresponding wheel rotation numbers are measured by a tire pressure measuring device 1 for each wheel; a step at which an automobile electronic control unit 2 reads information concerning an ABS gear 4 of each wheel; a step at which each tire pressure measuring device sets a same target angle position and calculates a time value required for reaching the target angle position on the basis of the corresponding wheel rotation numbers, wirelessly transmits data packet of the calculated time values respectively to the automobile electronic control unit, and identifies the wheel to which each tire pressure measuring device belongs.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for identifying the wheel to which each tire pressure measuring device belongs, in particular to a method for identifying the wheel to which each tire pressure measuring device belongs, which allows a vehicle computer, a vehicle owner, to identify the current tire pressure value of each wheel. [Background technology]

[0002] Tire pressure is an important value that determines whether a vehicle can run safely. With the development of science and technology, the method of measuring tire pressure for each wheel has changed significantly, from the traditional method of manually measuring each wheel to the current method of automatically measuring the tire pressure using various electronic devices and transmitting and displaying it on a monitor screen, which not only makes it easier for vehicle owners to identify, but also allows the computerized value to be used in conjunction with the vehicle's computer to set an alarm value.

[0003] A common electronic device is a tire pressure measuring device, which is equipped with related components for measuring tire pressure, combined with an electronic module powered by a battery, and communicates with a matching vehicle computer to share information, allowing vehicle owners to easily read the values ​​on the tire pressure measuring device and users to easily view the tire pressure values ​​using the vehicle computer.

[0004] A vehicle generally has four wheels, and these four tire pressure measuring devices are installed on the left front wheel, right front wheel, left rear wheel, and right rear wheel, respectively. However, because all four tire pressure measuring devices are exactly the same product, it is difficult for the vehicle computer to distinguish whether the value from each tire pressure measuring device belongs to the left front wheel, right front wheel, left rear wheel, or right rear wheel. In addition, because the optimal tire pressure values ​​for the front and rear wheels differ depending on the vehicle characteristics, the vehicle computer must accurately identify the wheel to which each tire pressure measuring device belongs in order for the vehicle owner to determine whether the vehicle computer should set an alarm value for the tire pressure value or whether the tire pressure value is abnormal. Therefore, it was necessary to develop a method to identify the wheel to which each tire pressure measuring device belongs so that the vehicle computer and the vehicle owner could easily measure the tire pressure value of each wheel.

[0005] In view of the above circumstances, the present inventors have conducted extensive research and have completed a method of identifying the wheel to which each tire pressure measuring device belongs. Summary of the Invention [Problem to be solved by the invention]

[0006] The main objective of the present invention is to provide a method for identifying the wheel to which each tire pressure measuring device belongs, in which the information of the ABS gear is used to identify the wheel to which each tire pressure measuring device belongs, and the automobile electronic control unit reads the time point of the information of the ABS gear of each wheel through a controller, and the time value required for each tire pressure measuring device to reach a target angle position is used as the time point for the automobile electronic control unit to record the information of the ABS gear of each wheel, thereby identifying the wheel to which each tire pressure measuring device belongs. [Means for solving the problem]

[0007] In order to solve the above problem, according to a first aspect of the present invention, there is provided a method for identifying wheels to which each tire pressure measuring device belongs, comprising the steps of: calculating a rotational speed value of the corresponding wheel by the tire pressure measuring device of each wheel; and reading information of the ABS gear of each wheel by a vehicle electronic control unit. Each of the tire pressure measuring devices sets the same target angular position and calculates a time value required to reach the target angular position based on the rotational speed value of the corresponding wheel, and wirelessly transmitting a data packet of the calculated time value to the vehicle electronic control unit. When the time value transmitted by any one of the tire pressure measuring devices is reached based on the time value transmitted by each of the tire pressure measuring devices, the vehicle electronic control unit reads the tooth value corresponding to the ABS gear of each wheel and the target angular position. After obtaining a plurality of corresponding tooth value values, a calculating element identifies the wheel to which each of the tire pressure measuring devices belongs based on whether the corresponding tooth numbers of each of the tire pressure measuring devices are concentrated in a specific tooth number range or are dispersed. [Effects of the Invention]

[0008] The method of identifying the wheel to which each tire pressure measuring device belongs in the present invention allows the vehicle computer and the vehicle owner to identify the current tire pressure value of each wheel. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating a vehicle system architecture of a method for identifying the wheel to which each tire pressure measurement device belongs according to an embodiment of the present invention; [Figure 2] 4 is an explanatory diagram of a state in which each tire pressure measuring device according to an embodiment of the present invention calculates a time value required to reach a target angular position based on the rotational speed value of the corresponding wheel. FIG. [Figure 3] FIG. 10 is an explanatory diagram of a state in which the tire pressure measuring device for the right front wheel has reached a target angular position. [Figure 4]FIG. 10 is an explanatory diagram of a state in which the tire pressure measuring device for the right rear wheel has reached a target angular position. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings, in which the same reference numerals denote the same or similar components.

[0011] A method for identifying the wheel to which each tire pressure measuring device belongs according to one embodiment of the present invention includes the following steps (1) to (3).

[0012] (1) A step of calculating the rotational speed value of the corresponding wheel by the tire pressure measuring device 1 of each wheel. (2) A step in which an automobile electronic control unit (ECU) 2 reads information from an ABS (Anti-Lock Brake System) gear 4 of each wheel (for example, by a controller 3, which may be an ABS controller in an ABS system). (3) Each tire pressure measuring device 1 sets the same target angular position 5, calculates the time value (T) required to reach the target angular position 5 based on the rotational value of the corresponding wheel, and wirelessly transmits a data packet of the calculated time value to the automobile electronic control unit 2. When the time value transmitted by any one of the tire pressure measuring devices 1 is reached based on the time values ​​transmitted by each tire pressure measuring device 1, the automobile electronic control unit 2 reads the corresponding tooth value of the ABS gear 4 and the target angular position 5 of each wheel. The calculation element (the calculation element is located inside the automobile electronic control unit 2 or inside the computer or controller 3 connected to the automobile electronic control unit 2) obtains multiple corresponding tooth values, and then identifies the wheel to which each tire pressure measuring device 1 belongs based on whether the corresponding tooth numbers of each tire pressure measuring device 1 are concentrated in a specific tooth number range or are dispersed.

[0013] The type of the tire pressure measuring device of this embodiment may be a TPM (Tire Pressure Monitoring) sensor or a TMS (Tire Mount Sensor).

[0014] Next, the implementation of the present invention will be described in more detail. The present invention uses information from the ABS gear 4 to identify the wheel to which each tire pressure measuring device 1 belongs. The automobile electronic control unit 2 reads the time point of the information from the ABS gear 4 of each wheel through the controller, and uses the time value required for each tire pressure measuring device 1 to reach the target angle position as the time point for the automobile electronic control unit 2 to record the information from the ABS gear 4 of each wheel, thereby achieving the purpose of identifying the wheel to which each tire pressure measuring device 1 belongs. In this embodiment, as shown in FIG. 2 , for example, if the target angular position 5 is 270 degrees, the tire pressure measurement device 1 for the right front wheel reaches the target angular position 5 six seconds after calculation, and the tire pressure measurement device 1 for the right rear wheel reaches the target angular position 5 ten seconds after calculation. The vehicle electronic control unit 2 records the tooth value data corresponding to each ABS gear 4 and the target angular position 5 six and ten seconds later. For example, if the serial number ID of the tire pressure measurement device for the right front wheel is 3 and the serial number ID of the tire pressure measurement device for the right rear wheel is 4, the state shown in FIG. 3 will be reached six seconds later. At this time, the vehicle electronic control unit 2 records the tooth value data corresponding to each ABS gear 4 and the target angular position 5 and marks it as ID3. Then, four seconds later, as shown in FIG. 4 , the vehicle electronic control unit 2 records the tooth value data corresponding to each ABS gear 4 and the target angular position 5 and marks it as ID4. As can be inferred from this, the results of the vehicle electronic control unit 2 recording data multiple times are shown in Table 1 below.

[0015] [Table 1]

[0016] Looking at the values ​​recorded when the tire pressure measuring device 1 at ID4 reaches the target angular position 5, the tooth values ​​corresponding to the ABS gear 4 recorded for the right rear wheel and the target angular position 5 are all the second tooth, so the tire pressure measuring device 1 at ID4 is identified as being located on the right rear wheel. This is because the relative position of the ABS gear corresponding to the tire pressure measurement does not change, so the number of teeth corresponding to the ABS gear 4 of the wheel and the target angular position 5 does not change in theory every time the tire pressure measuring device 1 reaches the target angular position 5. However, the values ​​for the other wheels actually record irregular and random values ​​due to differences in the rotational values ​​of each wheel due to differences in direction changes, tire pressure values, alignment, etc. while the vehicle is moving. As can be inferred from this, the automobile electronic control unit 2 can accurately determine which wheel each tire pressure measuring device 1 is located at. However, in the present invention, the target angular position 5 reached by each tire pressure measuring device 1 is used as the time point for recording data according to the required time value, so there will be a slight error in the actually recorded data. For example, taking a 50-tooth ABS gear 4 as an example, the tooth values ​​recorded by the tire pressure measuring device 1 of ID4 for the right rear wheel when it reaches the target angle position 5 may be 15, 14, and 16, but such a small deviation will not affect the identification compared to the huge random differences in the values ​​of the other wheels.

[0017] In practice, each tire pressure measuring device 1 may measure the current angle and rotational value of the corresponding wheel using an acceleration sensor.

[0018] The target angle position 5 set by each tire pressure measuring device 1 is remotely corrected by a wirelessly matched device. For example, a device such as an automobile electronic control unit 2, a mobile phone device, or a computer that communicates bidirectionally via Bluetooth or other wireless communication means performs the correction when the target angle position 5 set by each tire pressure measuring device 1 needs to be corrected.

[0019] Although the preferred embodiments of the present invention have been disclosed above so that those skilled in the art can understand, they are not intended to limit the present invention in any way. Various changes and modifications can be made within the scope of the present invention. Therefore, the scope of the claims of the present invention should be broadly interpreted to include such changes and modifications. [Explanation of symbols]

[0020] 1. Tire pressure measuring device 2. Automotive Electronic Control Unit 3 Controller 4 ABS gears 5 Target angular position

Claims

1. A method for identifying the wheel to which each tire pressure measuring device belongs, comprising: calculating the rotational speed of the corresponding wheel by the tire pressure measuring device of each wheel; The automobile electronic control unit reads the information of the ABS gear of each wheel; each of the tire pressure measuring devices sets the same target angular position, calculates a time value required to reach the target angular position based on the rotational speed of the corresponding wheel, and wirelessly transmits a data packet of the calculated time value to the vehicle electronic control unit; the vehicle electronic control unit, based on the time values ​​transmitted by each of the tire pressure measuring devices, reads the tooth values ​​corresponding to the ABS gear and the target angular position of each wheel when the time value transmitted by any one of the tire pressure measuring devices is reached; a calculating unit obtains a plurality of corresponding tooth values, and then identifies the wheel to which each of the tire pressure measuring devices belongs based on whether the tooth numbers corresponding to each of the tire pressure measuring devices are concentrated in a specific tooth number range or are dispersed.

2. 2. The method for identifying the wheel to which each tire pressure measuring device belongs as claimed in claim 1, wherein the tire pressure measuring device of each wheel measures the current angle of the corresponding wheel by an acceleration sensor.

3. 2. The method for identifying the wheel to which each tire pressure measuring device belongs as claimed in claim 1, wherein the tire pressure measuring device of each wheel measures the rotational speed by an acceleration sensor.

4. 2. The method for identifying the wheel to which each tire pressure measuring device belongs as claimed in claim 1, wherein the automobile electronic control unit reads the information of the ABS gear of each wheel through a controller.

5. 2. The method for identifying the wheel to which each tire pressure measuring device belongs as claimed in claim 1, wherein the target angular position set by each tire pressure measuring device is remotely corrected by a wirelessly matched device.

6. 2. The method for identifying the wheel to which each tire pressure measuring device belongs according to claim 1, wherein the computing element is located inside the automobile electronic control unit or inside a computer or controller connected to the automobile electronic control unit.

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