How to Identify Inner and Outer Tire Pressure Sensors

Abstract

To provide a method for identifying inner and outer tire pressure sensors by which a vehicle main unit can identify the tire pressure sensors of inner and outer wheels.SOLUTION: A method for identifying inner and outer tire pressure sensors includes: a signal receiving step S1 in which a first wheel set and a second wheel set arranged at mirror image positions are prepared, where the first wheel set includes a first inner tire pressure sensor and a first outer tire pressure sensor, and the second wheel set includes a second inner tire pressure sensor and a second outer tire pressure sensor, and the first inner tire pressure sensor reads and identifies signal intensities of the second inner tire pressure sensor and the second outer tire pressure sensor, and the first outer tire pressure sensor reads and identifies signal strengths of the second inner tire pressure sensor and the second outer tire pressure sensor; a signal intensity adding step S2; and an inner and outer wheel identifying step S3.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for identifying inner and outer tire pressure sensors, and more particularly to a method for identifying inner and outer tire pressure sensors that is applicable to vehicles with inner and outer wheels such as trucks and trailers, allowing a vehicle main unit to identify the tire pressure sensors of the inner and outer wheels. [Background technology]

[0002] Tire pressure is an important value that affects whether a vehicle can be driven safely. With the advancement of science and technology, the method of measuring tire pressure has also improved significantly. Previously, tire pressure had to be measured manually for each wheel, but now various electronic devices can measure tire pressure automatically and transmit it to a monitor for display, which is very convenient.

[0003] Tire pressure sensors are a common type of electronic device. Tire pressure sensors include related components for measuring tire pressure. A battery-powered electronic module communicates with a matching vehicle main unit to share data, allowing users to easily view tire pressure readings on the main unit. Conventional vehicles typically have four wheels, so four tire pressure sensors are installed on the left front wheel, right front wheel, left rear wheel, and right rear wheel. However, because all four tire pressure sensors are identical, it is difficult for the main unit to identify whether each tire pressure sensor reading corresponds to the left front wheel, right front wheel, left rear wheel, or right rear wheel. Therefore, the conventional method relies on the main unit to collect information on the rotation direction and wireless signal strength of each tire pressure sensor to determine the location of each tire pressure sensor.

[0004] However, in the case of vehicles with inner and outer wheels, such as trucks and trailers, the inner and outer wheels are positioned too close together, making it difficult to distinguish between the inner and outer wheels using the above method, and the vehicle main unit often makes incorrect identification. Therefore, there was a need to develop a method for distinguishing between the inner and outer wheel pressure measurement devices.

[0005] In view of the above circumstances, the inventors have conducted extensive research and have completed the method of identifying inner and outer tire pressure sensors of the present invention. Summary of the Invention [Problem to be solved by the invention]

[0006] The main object of the present invention is to provide a method for identifying inner and outer tire pressure sensors, which allows a tire pressure sensor to read and identify the signal strength of a tire pressure sensor located at a mirror image position, allowing a vehicle main unit to identify the inner and outer wheels, and can more accurately identify the tire pressure sensors of the inner and outer wheels than the prior art. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, according to a first aspect of the present invention, there is provided a method for identifying inner and outer tire pressure sensors, comprising: preparing a first wheel set and a second wheel set installed in mirror image positions, the first wheel set including a first inner tire pressure sensor and a first outer tire pressure sensor, the second wheel set including a second inner tire pressure sensor and a second outer tire pressure sensor, the first inner tire pressure sensor reading and identifying the second inner tire pressure sensor and the second outer tire pressure sensor, and the first outer tire pressure sensor reading and identifying the second inner tire pressure sensor and the second outer tire pressure sensor; a signal strength adding step in which the vehicle main unit adds the signal strengths read from the second inner tire pressure sensor and the second outer tire pressure sensor to calculate a total value of a first inner wheel measurement signal strength, and the first outer tire pressure sensor adds the signal strengths read from the second inner tire pressure sensor and the second outer tire pressure sensor to calculate a total value of a first outer wheel measurement signal strength; and an inner and outer wheel identifying step in which the vehicle main unit receives the total value of the first inner wheel measurement signal strength and the total value of the first outer wheel measurement signal strength, compares their magnitudes, and determines that the larger numerical value is the inner wheel and the smaller numerical value is the outer wheel.

[0008] In order to solve the above problem, according to a second aspect of the present invention, there is provided a method for identifying inner and outer tire pressure sensors, comprising: a signal receiving step of preparing a first wheel set and a second wheel set installed in mirror image positions, the first wheel set including a first inner tire pressure sensor and a first outer tire pressure sensor, the second wheel set including a second inner tire pressure sensor and a second outer tire pressure sensor, the first inner tire pressure sensor reading and identifying the signal strength of the second inner tire pressure sensor and the second outer tire pressure sensor, and the first outer tire pressure sensor reading and identifying the signal strength of the second inner tire pressure sensor and the second outer tire pressure sensor; and an inner and outer wheel identifying step of the first inner tire pressure sensor and the first outer tire pressure sensor transmitting the identified signal strength data to a vehicle main unit, the vehicle main unit comparing the two sets of numerical values, the one with the larger numerical value in each set representing the inner wheel and the one with the smaller numerical value representing the outer wheel, and comparing the two sets of comparison results to confirm whether the determination of the inner and outer wheels is accurate. [Effects of the Invention]

[0009] The method for identifying inner and outer tire pressure sensors of the present invention uses a tire pressure sensor to read and identify the signal strength of a tire pressure sensor located in a mirror image position, allowing the vehicle main unit to identify the inner and outer wheels, and can identify the tire pressure sensors of the inner and outer wheels more accurately than prior art. [Brief explanation of the drawings]

[0010] [Figure 1] 3 is a flowchart showing a method for identifying inner and outer tire pressure sensors according to the first embodiment of the present invention. [Figure 2] 1 is a block diagram showing the configuration of a method for identifying inner and outer tire pressure sensors according to a first embodiment of the present invention; [Figure 3] 6 is a flowchart showing a method for identifying inner and outer tire pressure sensors according to a second embodiment of the present invention. [Figure 4]FIG. 10 is a block diagram showing the configuration of a method for identifying inner and outer tire pressure sensors according to a second embodiment of the present invention. [Figure 5] FIG. 1 is a scenario diagram (1) in which a vehicle main unit indicates tire pressure sensors of each wheel set according to a method for identifying inner and outer tire pressure sensors according to an embodiment of the present invention. [Figure 6] FIG. 10 is a scenario diagram (2) in which the vehicle main unit indicates the tire pressure sensors of each wheel set according to the method for identifying inner and outer tire pressure sensors according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] 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.

[0012] The method for identifying inner and outer tire pressure sensors according to one embodiment of the present invention is performed after the conventional tire pressure sensor determination step. In the conventional tire pressure sensor determination step, the vehicle main unit first locks on each tire pressure sensor on the left and right wheel sets, and then determines whether the wheel is a front or rear wheel and the rotation direction of each tire. Following the conventional step, the subsequent step identifies the inner and outer tire pressure sensors from the multiple tire pressure sensors on the left and right wheel sets.

[0013] (First embodiment) Please refer to Figures 1 and 2. As shown in Figures 1 and 2, the method for identifying inner and outer tire pressure sensors according to the first embodiment of the present invention includes the following steps (S1) to (S3).

[0014] Signal receiving step (S1): Prepare a first wheel set 1 and a second wheel set 2 installed in mirror image positions. The first wheel set 1 includes a first inner tire pressure sensor 11 and a first outer tire pressure sensor 12. The second wheel set 2 includes a second inner tire pressure sensor 21 and a second outer tire pressure sensor 22. The first inner tire pressure sensor 11 reads and identifies the signal strengths of the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22. The first outer tire pressure sensor 12 reads and identifies the signal strengths of the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22.

[0015] Signal strength addition step (S2): The first inner tire pressure sensor 11 adds the signal strengths read from the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 to calculate a total value of the first inner wheel measurement signal strength. The first outer tire pressure sensor 12 adds the signal strengths read from the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 to calculate a total value of the first outer wheel measurement signal strength.

[0016] Inner and outer wheel identification step (S3): The vehicle main unit 100 receives the sum of the first inner wheel measurement signal strength and the sum of the first outer wheel measurement signal strength, compares the magnitudes of the two, and determines that the larger value is the inner wheel and the smaller value is the outer wheel.

[0017] The first inner tire pressure sensor 11 receives signals from the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 via the first inner wheel signal transmitting / receiving module 111, determines the signal strength, and transmits the sum of the first inner wheel measurement signal strengths to the vehicle main unit 100. The first inner tire pressure sensor 11 calculates the signal strengths of the received second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 via the first inner wheel signal adding module 112.

[0018] The first outer tire pressure sensor 12 receives signals from the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 via the first outer wheel signal transmitting and receiving module 121, determines the signal strength, and sends the sum value of the first outer wheel measurement signal strength to the vehicle main unit 100. The first outer tire pressure sensor 12 calculates the signal strength of the received second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 via the first outer wheel signal adding module 122.

[0019] The first embodiment described above will be explained in more detail below. The reason why the vehicle main unit 100 can distinguish between the inner and outer wheels by comparing the total strength of the first inner wheel measurement signal with the total strength of the first outer wheel measurement signal will be explained in detail below. In FIG. 2, the first wheel set 1 is the left wheel, and the second wheel set 2 is the right wheel. As can be seen from FIG. 2, the first inner tire pressure sensor 11 is closer to the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 than the first outer tire pressure sensor 12. Therefore, the signal strength received by the first inner tire pressure sensor 11 is stronger. To make the embodiment of the present invention easier to understand, the magnitude of the signal strength is represented by the size of the numbers. In other words, the larger the number, the stronger the signal strength, and the smaller the number, the weaker the signal strength. For example, if the signal strength of the second inner tire pressure sensor 21 received by the first inner tire pressure sensor 11 is "7" and the signal strength of the second outer tire pressure sensor 22 received by the first inner tire pressure sensor 11 is "6," the total value of the first inner wheel measurement signal strengths is "13." For example, if the signal strength of the second inner tire pressure sensor 21 received by the first outer tire pressure sensor 12 is "6" and the signal strength of the second outer tire pressure sensor 22 received by the first outer tire pressure sensor 12 is "5," the total value of the first outer wheel measurement signal strengths is "11." Therefore, by comparing the two numerical values ​​mentioned above, it is determined that the larger numerical value corresponds to the inner wheel and the smaller numerical value corresponds to the outer wheel.

[0020] (Second embodiment) 3 and 4. As shown in FIGS. 3 and 4, the method for identifying inner and outer tire pressure sensors according to a second embodiment of the present invention omits the signal strength addition step and only includes a signal receiving step S10 and an inner / outer wheel identifying step S20. For example, if the signal strength of the second inner tire pressure sensor 21 received by the first inner tire pressure sensor 11 is "7" and the signal strength of the second outer tire pressure sensor 22 received by the first inner tire pressure sensor 11 is "6," after transmitting the above-mentioned data to the vehicle main unit 100, the vehicle main unit 100 will identify the second inner tire pressure sensor 21 as being located on the inner wheel because the signal strength is stronger, and will identify the second outer tire pressure sensor 22 as being located on the outer wheel because the signal strength is weaker. If the signal strength of the second inner tire pressure sensor 21 received by the first outer tire pressure sensor 12 is "6" and the signal strength of the second outer tire pressure sensor 22 received by the first outer tire pressure sensor 12 is "5", after transmitting the above-mentioned data to the vehicle main unit 100, the vehicle main unit 100 will determine that the second inner tire pressure sensor 21 is located on the inner wheel because the signal strength is stronger, and that the second outer tire pressure sensor 22 is located on the outer wheel because the signal strength is weaker. Then, the vehicle main unit 100 will compare the above-mentioned two sets of comparison results to confirm the final result.

[0021] In the steps of the present invention, the vehicle main unit 100 first determines the wheel set to which each tire pressure sensor belongs (for example, by using the clockwise or counterclockwise rotation direction). For example, as shown in FIG. 5, the vehicle main unit 100 accurately determines that the first inner tire pressure sensor 11 and the first outer tire pressure sensor 12 belong to the first wheel set 1 and the second inner tire pressure sensor 21 and the second outer tire pressure sensor 22 belong to the second wheel set 2. However, in practice, the vehicle main unit 100 may make an erroneous determination. For example, as shown in FIG. 6, the vehicle main unit 100 may erroneously determine that the first inner tire pressure sensor 11 belongs to the second wheel set 2 or that the second inner tire pressure sensor 21 belongs to the first wheel set 1. Therefore, the present invention further provides a method for preventing such an error. The present invention takes the first method as an example. The vehicle main unit 100 includes a reasonable range value for the sum of the first inner wheel measurement signal strengths and the sum of the first outer wheel measurement signal strengths. If the sum of the first inner wheel measurement signal strengths and the sum of the first outer wheel measurement signal strengths are not within the reasonable range, the vehicle main unit 100 newly matches the first inner tire pressure sensor 11, the first outer tire pressure sensor 12, the second inner tire pressure sensor 21, and the second outer tire pressure sensor 22, and resumes the signal receiving step S1 until both the sum of the first inner wheel measurement signal strengths and the sum of the first outer wheel measurement signal strengths are within the reasonable range. For example, as can be seen by combining the above description of the present invention with the content shown in FIG. 2, when the vehicle main unit 100 accurately judges the signals of each wheel set as shown in FIG. 5, if the sum of the feedback signal strengths of the first inner tire pressure sensor 11 is "13" and the reasonable range of normal signal strength fluctuations is 12 to 14, the vehicle main unit 100 makes an incorrect judgment and the sum of the signal strengths received by the vehicle main unit 100 falls outside the aforementioned range, as shown in FIG. 6. For example, if the signal strength is already out of the reasonable range of the sum of the signal strengths of the first inner tire pressure sensors 11, the vehicle main unit 100 will determine that there is a signal matching error.

[0022] To more accurately eliminate error signals, the present invention provides another method. The vehicle main unit 100 includes a reasonable range of intensity values ​​for the inner tire pressure sensor signal and the outer tire pressure sensor signal received by the first outer tire pressure sensor 12 and the first inner tire pressure sensor 11, respectively. In this method, when the vehicle main unit 100 receives the first inner wheel signal intensity sum value and the first outer wheel signal joint sum value, it also receives the sum data. If any of these values ​​is not within the reasonable range, the process restarts from signal reception step S1 until the intensity values ​​of the inner tire pressure sensor signal and the outer tire pressure sensor signal received by the first inner tire pressure sensor 11 and the first outer tire pressure sensor 12, respectively, are both within the reasonable range. For example, since the signal intensity from the second inner tire pressure sensor 21 must be between 6.5 and 7.5 for the first inner tire pressure sensor 11, if the first inner tire pressure sensor 11 receives an intensity signal outside the range of 6.5 to 7.5, it is determined that an error has occurred in signal reception. [Explanation of symbols]

[0023] 1 First Wheelset 2 Second Wheelset 11 First inner tire pressure sensor 12 First outer tire pressure sensor 21 Second inner tire pressure sensor 22 Second outer tire pressure sensor 100 Vehicle main unit 111 first inner wheel signal transmitting and receiving module 112 first inner wheel signal summing module 121 first outer wheel signal transmitting and receiving module 122 first outer wheel signal summing module S1 Signal reception step S2 Signal strength addition step S3 Inner and outer wheel identification step S10 Signal reception step S20 Inner and outer wheel identification step

Claims

1. A method for identifying inner and outer tire pressure sensors, comprising: a signal receiving step of preparing a first wheel set and a second wheel set installed in mirror image positions, the first wheel set including a first inner tire pressure sensor and a first outer tire pressure sensor, the second wheel set including a second inner tire pressure sensor and a second outer tire pressure sensor, the first inner tire pressure sensor reading and identifying the signal strengths of the second inner tire pressure sensor and the second outer tire pressure sensor, and the first outer tire pressure sensor reading and identifying the signal strengths of the second inner tire pressure sensor and the second outer tire pressure sensor; a signal strength addition step in which the first inner tire pressure sensor adds the signal strengths read by the second inner tire pressure sensor and the second outer tire pressure sensor to calculate a total value of a first inner wheel measurement signal strength, and the first outer tire pressure sensor adds the signal strengths read by the second inner tire pressure sensor and the second outer tire pressure sensor to calculate a total value of a first outer wheel measurement signal strength; and an inner / outer wheel discrimination step in which the vehicle main unit receives the sum of the first inner wheel measurement signal strengths and the sum of the first outer wheel measurement signal strengths, compares the magnitudes of the received signals, and determines that the larger value is the inner wheel and the smaller value is the outer wheel. How to identify inner and outer tire pressure sensors.

2. 2. The method for identifying inner and outer tire pressure sensors according to claim 1, wherein the vehicle main unit includes a reasonable range of numerical values ​​for the sum of the first inner wheel measurement signal strengths and the sum of the first outer wheel measurement signal strengths, and if the numerical values ​​for the sum of the first inner wheel measurement signal strengths and the sum of the first outer wheel measurement signal strengths are not within the reasonable range of numerical values, the vehicle main unit newly matches the first inner tire pressure sensor, the first outer tire pressure sensor, the second inner tire pressure sensor, and the second outer tire pressure sensor, and resumes the steps from the signal receiving step until both the first inner wheel measurement signal strength sum and the first outer wheel measurement signal strength sum are within the reasonable numerical range.

3. 2. The method of claim 1, wherein the vehicle main unit includes intensity values ​​within a reasonable range of the inner tire pressure sensor signal and the outer tire pressure sensor signal received by the first outer tire pressure sensor and the first inner tire pressure sensor, respectively, and if any one of the values ​​is not within the reasonable range, the vehicle main unit newly matches the first inner tire pressure sensor, the first outer tire pressure sensor, the second inner tire pressure sensor, and the second outer tire pressure sensor, and restarts the steps from the signal receiving step until the intensity values ​​of the inner tire pressure sensor signal and the outer tire pressure sensor signal received by the first inner tire pressure sensor and the first outer tire pressure sensor, respectively, are both within the reasonable numerical range.

4. A method for identifying inner and outer tire pressure sensors, comprising: a signal receiving step of preparing a first wheel set and a second wheel set installed in mirror image positions, the first wheel set including a first inner tire pressure sensor and a first outer tire pressure sensor, the second wheel set including a second inner tire pressure sensor and a second outer tire pressure sensor, the first inner tire pressure sensor reading and identifying the signal strengths of the second inner tire pressure sensor and the second outer tire pressure sensor, and the first outer tire pressure sensor reading and identifying the signal strengths of the second inner tire pressure sensor and the second outer tire pressure sensor; The first inner tire pressure sensor and the first outer tire pressure sensor transmit the identified signal strength data to a vehicle main unit, and the vehicle main unit compares the two sets of values, and determines whether the larger value of each set is the inner wheel and the smaller value is the outer wheel, and compares the two sets of comparison results to confirm whether the determination of the inner and outer wheels is accurate. How to identify inner and outer tire pressure sensors.

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