KR101512399B1 - Tire Pressure Monitoring System and Method for Performing Auto-location thereof - Google Patents

Tire Pressure Monitoring System and Method for Performing Auto-location thereof Download PDF

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Publication number
KR101512399B1
KR101512399B1 KR1020130159974A KR20130159974A KR101512399B1 KR 101512399 B1 KR101512399 B1 KR 101512399B1 KR 1020130159974 A KR1020130159974 A KR 1020130159974A KR 20130159974 A KR20130159974 A KR 20130159974A KR 101512399 B1 KR101512399 B1 KR 101512399B1
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South Korea
Prior art keywords
wheel
phase angle
pressure sensing
tire
information
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KR1020130159974A
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Korean (ko)
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김경택
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현대오트론 주식회사
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Abstract

The present invention relates to a tire pressure sensing module provided on a wheel or a tire for measuring pressure and wheel phase angle of the tire and transmitting data including identification code and first wheel phase angle information at an arbitrary phase angle position; A wheel rotation detection module provided in the vehicle body and measuring the rotation of the wheel to provide second wheel phase angle information; And second wheel phase angle information at the time of receiving data from the tire pressure sensing module and transmitting data, and comparing the first wheel phase angle information and the second wheel phase angle information to each other, The present invention provides a tire pressure sensing system including a control unit for determining a position of a wheel, so that the position of the tire pressure sensing module can be simply determined and automatically allocated in a direct-tire pressure sensing system.

Description

Technical Field [0001] The present invention relates to a tire pressure detection system and a tire position automatic allocation method,

The present invention relates to a tire pressure sensing system and a tire position automatic allocation method, and more particularly, to a tire pressure sensing system capable of assigning a position of a tire pressure sensing module, which measures pressure of a tire to a control unit, And a method of automatically allocating a tire position.

Recently, vehicles are equipped with a tire pressure monitoring system (TPMS) that detects the decrease in air pressure of a tire mounted on a vehicle and informs the driver.

If the air pressure of the tire is low, the vehicle may slip easily, leading to a major accident, fuel consumption is increased, fuel economy is deteriorated, tire life is shortened, and ride comfort and braking power are also reduced.

The Tire Pressure Monitoring System (TPMS) allows the driver to be informed of the pressure drop in the tire, thereby checking the pressure of the tire to prevent this problem in advance.

Tire pressure sensing systems can be largely classified into direct and indirect methods. The indirect method is a method of estimating the tire air pressure from the rotation information of the tire, and the direct method is a method of directly measuring the tire air pressure by providing a pressure sensor inside the tire wheel.

In a direct tire pressure sensing system, the tire pressure measured from a tire pressure sensing module mounted on a wheel or tire is transmitted wirelessly to indicate the tire pressure drop.

At this time, there is a problem that it is not possible to determine from which wheel the pressure information of the tire received wirelessly is transmitted from the tire pressure sensing module when the wheel or the tire is firstly mounted, replaced, or changed in position.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a tire pressure sensing system and a tire position automatic allocation method capable of automatically determining the position of a tire pressure sensing module in a direct- The purpose of that is to do.

According to an aspect of the present invention, there is provided a method for controlling a tire pressure, comprising: measuring a pressure and a wheel phase angle of a tire or a wheel, measuring a tire phase angle of the tire and transmitting the data including the identification code and the first wheel phase angle information at an arbitrary phase angle position; Sensing module; A wheel rotation detection module provided in the vehicle body and measuring the rotation of the wheel to provide second wheel phase angle information; And a controller for receiving the data from the tire pressure sensing module and receiving the second wheel phase angle information when the data is transmitted and comparing the first wheel phase angle information and the second wheel phase angle information, And a control unit for determining a position of the wheel on which the tire pressure sensing module is mounted.

Wherein the control unit is configured to calculate a first phase angle displacement from the first wheel phase angle information transmitted sequentially from the tire pressure sensing module, Wherein the first phase angular displacement and the second phase angular displacement are sequentially matched to each other by the wheel mounted with the tire pressure sensing module, The identification code transmitted from the tire pressure sensing module can be given.

Wherein the tire pressure sensing module divides the phase angle of the wheel into a plurality of segments to give a phase angle number to each segmented segment, and at any position among the divided segments, Each number and data including the identification code, to the control unit.

The tire pressure sensing module divides the phase angle of the wheel into a plurality of segments, assigns phase angle numbers to the divided segments, stores a plurality of transmission patterns arbitrarily arranged in the phase angle numbers, And transmits data including the transmission pattern information and the identification code as the first wheel phase angle information at a position indicated by the phase angle number according to each phase angle number listed in the transmission pattern, To the control unit.

The tire pressure sensing module includes: a pressure sensor for measuring a pressure of the tire; A phase angle sensor for measuring a phase angle of the wheel; A pressure sensing transmission unit wirelessly transmitting data including a pressure value of the tire, an identification code, and first wheel phase angle information; And a pressure sensing control unit for controlling the pressure sensing transmission unit to transmit the data at an arbitrary phase angular position of the wheel.

The phase angle sensor may be provided as an acceleration sensor.

The wheel rotation detection module may be a wheel speed sensor of an anti-lock brake system (ABS).

Wherein the control unit comprises: a tire information processing unit for receiving the data from the tire pressure sensing module, storing and processing the data; A rotation information processing unit for receiving the second wheel phase angle information of each wheel from the wheel rotation detection module, storing and processing the second wheel phase angle information; And a control processor for automatically assigning the position of the tire pressure sensing module by comparing the first wheel phase angle information processed by the tire information processing unit with the second wheel phase angle information processed by the rotation information processing unit .

According to another aspect of the present invention, there is provided a tire pressure sensing module for a tire or a wheel, comprising: measuring pressure and wheel phase angle of a tire; The tire pressure sensing module transmitting data including an identification code and first wheel phase angle information at an arbitrary phase angle position; Receiving second wheel phase angle information at the time of transmitting the data from the wheel rotation detection module provided in the vehicle body and measuring the rotation of the wheel; And comparing the first wheel phase angle information with the second wheel phase angle information to determine a position of the wheel on which the tire pressure sensing module is mounted.

Wherein the step of determining the position of the wheel equipped with the tire pressure sensing module calculates a first phase angle displacement from the first wheel phase angle information sequentially transmitted from the tire pressure sensing module, A second phase angular displacement is calculated from the second wheel phase angle information of each wheel when each information is transmitted, and a wheel in which the first phase angular displacement and the second phase angular displacement are sequentially matched is detected as the tire pressure detection It can be distinguished by a wheel equipped with a module.

Wherein the step of transmitting data including the identification code and the first wheel phase angle information at the arbitrary phase angle position divides the phase angle of the wheel into a plurality of segments and assigns phase angle numbers to the divided segments, And transmits the data including the phase angle number and the identification code as the first wheel phase angle information at an arbitrary position among the obtained angular position.

Wherein the step of transmitting data including the identification code and the first wheel phase angle information at the arbitrary phase angle position divides the phase angle of the wheel into a plurality of segments and assigns phase angle numbers to the divided segments, A plurality of transmission patterns in which each number is arbitrarily arranged are stored, and a transmission pattern is selected from among the plurality of transmission patterns stored, and at a position indicated by the phase angle number according to each phase angle number listed in the transmission pattern, The transmission pattern information and the data including the identification code can be transmitted as the phase angle information.

According to the tire pressure sensing system and the tire position automatic allocation method of the present invention, the position of the tire pressure sensing module can be simply discriminated and automatically allocated in the direct tire pressure sensing system.

1 is a block diagram of a tire pressure sensing system in accordance with an embodiment of the present invention.
2 is a block diagram showing the configuration of the tire pressure sensing module of FIG.
FIG. 3 is a view showing a transmission position resolution of the tire pressure sensing module of FIG. 1. FIG.
4 is a diagram showing a plurality of transmission patterns.
5 is a block diagram showing the configuration of the control unit of Fig.
6 is a flowchart of a method of automatically allocating a tire position according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

1 is a block diagram of a tire pressure sensing system in accordance with an embodiment of the present invention.

Referring to FIG. 1, a tire pressure sensing system 100 according to an embodiment of the present invention includes a tire pressure sensing module 120, a wheel rotation sensing module 130, and a control unit 140.

A plurality of wheels 10 of the vehicle are provided. In this embodiment, the wheel 10 includes a right front wheel 10FR, a left front wheel 10FL, a right rear wheel 10RR, and a left rear wheel 10RL. Depending on the embodiment, the wheels 10 may be provided in various numbers.

The tire 20 is mounted on the outer periphery of the wheel 10 of the vehicle and is formed of a rubber material. The tire (20) is mounted on the rim of the wheel (10). The tire 20 is provided on each wheel 10 and the tire 20 corresponds to the wheel 10 and includes an FR tire 20FR provided on the front right side of the vehicle body 1, An RL tire 20RR provided on the rear right side, and an RL tire 20RL provided on the rear left side.

The tire pressure sensing module 120 is provided on the wheel 10 or the tire 20 to sense the pressure and / or temperature of the tire 20 for determining the degree of air pressure of the tire 20, Lt; / RTI >

The tire pressure sensing module 120 may be installed at various positions of the wheel 10, such as the rim of the wheel 10 or the side of the tire 20. The tire pressure sensing module 120 is provided on each of the plurality of wheels 10 to sense the pressure of each tire 20 and the phase angle of each wheel 10. [

Each of the plurality of tire pressure sensing modules 120 has an identification number that is a unique number different from the other tire pressure sensing modules 120. The plurality of tire pressure sensing modules 120 each include data including pressure value and / or temperature value of the sensed tire 20, identification code and first wheel phase angle information indicating the phase angle of each wheel 10, To the control unit (140).

At this time, the tire pressure sensing module 120 transmits data at an arbitrary phase angular position of the wheel 10, and outputs data including the first wheel phase angle information indicating the phase angle at this time and the identification code to the control unit 140, As shown in FIG. The arbitrary phase angle at which the tire pressure sensing module 120 transmits data is randomly changed and the tire pressure sensing module 120 transmits data including the first wheel phase angle information and the identification code at the changed transmission position do.

2, the tire pressure sensing module 120 includes a pressure sensing sensor 121, a phase angle sensor 122, a pressure sensing transmission unit 123, a pressure sensing control unit 124, And a pressure sensing battery 125 for sensing the pressure.

The pressure sensing sensor 121 measures the pressure and / or temperature of the tire. The pressure value and / or the temperature value of the tire 20 measured by the pressure sensing sensor 121 is transmitted to the pressure sensing control unit 124 and is converted from an analog signal to a digital signal.

The phase angle sensor 122 measures the phase angle of the wheel 10. The phase angle sensor 122 preferably calculates the correct phase angle from the reference point during the rotation of the wheel 10, but it is also possible to measure the phase angle displacement during the set time during the rotation of the wheel 10 according to the embodiment, A signal can be output when a specific phase angle is reached when the motor 10 rotates.

The phase angle sensor 122 can output an electrical signal in response to a change in gravity, an electrical signal in response to a change in acceleration, or a signal in response to a ground impact.

Various sensors such as a piezoelectric sensor, an acceleration sensor, or an impact sensor may be used as the phase angle sensor 122 according to a signal output method.

In this embodiment, the phase angle sensor 122 is an acceleration sensor that is installed in the gravity direction and outputs an electrical signal in accordance with a change in gravity. The phase angle sensor 122 outputs a continuously varying signal similar to a sinusoidal curve as the wheel 10 rotates.

Referring to FIG. 3, the tire pressure sensing module 120 is provided in the radial direction of the wheel 10 to measure the acceleration in the gravity direction. The tire pressure sensing module 120 measures acceleration in the radial direction of the wheel 10, but outputs only the gravity direction acceleration component excluding the acceleration component due to the motion of the vehicle.

When the tire pressure sensing module 120 is at the highest point of the wheel 10, the gravity is maximized and the phase angle sensor 122 outputs the minimum value, and when the lowest point of the wheel 10 is present, And the phase angle sensor 122 outputs a maximum value.

Therefore, when the phase angle sensor 122 outputs the minimum value during the rotation of the wheel 10, the phase angle P is 0 degree, the phase angle P is 90 degrees when the intermediate value is outputted, and the phase Each P is 180 degrees, and 270 degrees when outputting the intermediate value again. The phase angle P can be calculated according to the continuous output value of the phase angle sensor 122. [

The signal output from the phase angle sensor 122 is transmitted to the pressure sensing controller 124 and converted from an analog signal to a digital signal.

The pressure sensing transmission unit 123 wirelessly transmits to the control unit 140 data including the pressure value of the tire 20, the identification code, and the first wheel phase angle information. The pressure sensing transmitter 123 outputs the processed data in the pressure sensing controller 124 as a coded radio frequency (RF) signal.

The pressure sensing control unit 124 receives the pressure value and / or temperature value of the tire 20 sensed by the pressure sensing sensor 121 and receives information indicating the phase angle of the wheel 10 from the phase angle sensor 122 And generates data including the pressure value of the tire 20, the identification code, and the first wheel phase angle information. The generated data is transmitted to the control unit 140 via the pressure sensing transmission unit 123. [

At this time, the pressure sensing control unit 124 controls the pressure sensing transmission unit 123 to transmit data at an arbitrary phase angular position of the wheel 10. [

Specifically, the pressure sensing control unit 124 divides the phase angle of the wheel 10 into a plurality of phases, assigns phase angle numbers to the divided positions, and at any position among the divided positions, the first wheel phase angle information And transmits the data including the phase angle number and the identification code to the control unit 140 via the pressure sensing transmission unit 123. [ At this time, the position at which the data is transmitted is changed at random.

Referring to FIG. 3, in this embodiment, the phase angle of the wheel 10 is equally divided into eight, and phase angle numbers from 0 to 7 are assigned to the divided positions. At this time, the phase angle difference of the wheel 10 between each phase angle number is 45 degrees.

The pressure sensing control unit 124 generates a random number between 0 and 7 using the random variable and calculates the pressure value of the tire 20, the identification code, and the first wheel phase angle Generates data including the phase angle number as information, and transmits the data through the pressure-sensing transmission unit 123. The phase angle number indicating the position at which the data is transmitted is changed randomly.

Thereby, since the position at which the tire pressure sensing module 120 transmits the data to the control unit 140 is changed each time the transmission is performed, the risk of occurrence of errors due to the signal shaded area of the tire 20 or the wheel 10 is reduced .

Meanwhile, the pressure sensing control unit 124 of the present embodiment may store a plurality of transmission patterns in which positions for transmitting tire information are set according to the phase angle of the wheel 10. [ The plurality of transmission patterns are the phase angles of the wheels 10 at the positions where the data are transmitted are arranged in order of time. At this time, the phase angle of the wheel 10 may represent the value of the phase angle itself, but a single rotation of the wheel 10 is divided, and each divided point is assigned a unique phase number.

Each of the plurality of transmission patterns is set with a transmission pattern number that is a unique number. The transmission pattern number is assigned to each transmission pattern and stored in the pressure sensing control unit 124.

4 is an example of a pattern table to which a transmission pattern number for a plurality of transmission patterns and a phase angle number of each transmission pattern are given. In the present embodiment, five phase angle numbers are set for each transmission pattern, and four transmission patterns are set for a plurality of transmission patterns. 4 is given a transmission pattern number from 0 to 3.

A phase angle number of [0, 2, 5, 1, 7] is set as the second transmission pattern to which the transmission pattern number 1 is assigned. When the second transmission pattern is calculated by the phase angle of the wheel 10, [0 degrees, 90 degrees, 225 degrees, 45 degrees, 315 degrees] is obtained.

The pressure sensing control unit 124 arbitrarily selects one transmission pattern among the transmission patterns and transmits the transmission pattern information as the first wheel phase angle information and the transmission pattern information at the position indicated by the phase angle number according to each phase angle number listed in the transmission pattern, To the control unit 140. For example,

The transmission pattern information includes transmission pattern numbers of the selected transmission patterns and order information that is a sequence of phase angle numbers at the time when the tire information is transmitted in the selected transmission pattern. That is, the transmission pattern information is a combination of the transmission pattern number and the order information of the phase angle number.

Referring to FIG. 4, when the selected transmission pattern is the second transmission pattern and the phase information is the phase angle number 5, which is the third phase angle number in the second transmission pattern, the transmission pattern information is [13] when the tire information is transmitted. When the transmission pattern information is [24], it can be seen that the selected transmission pattern is the third transmission pattern and the phase angle number at the time when the tire information is transmitted is 5, which is the fourth phase angle number of the third transmission pattern.

At this time, a transmission pattern table indicating the same transmission pattern is stored in the control unit 140 so that the phase angle of the wheel 10 can be calculated from the transmission pattern information transmitted from the pressure sensing control unit 124 of the tire pressure sensing module 120 have.

The pressure sensing battery 125 supplies power to the pressure sensing control unit 124, the pressure sensing sensor 121, the phase angle sensor 122 and the pressure sensing transmission unit 123.

The wheel rotation detection module 130 detects rotation information (second wheel phase angle information) of the wheel 10 indicating the rotation degree of the wheel 10. The wheel rotation detection module 130 is provided in the vehicle body 1 and detects rotation information of the wheel 10 in various ways.

In this embodiment, teeth are formed on the disk 30 of the wheel 10 rotating together with the tire 20, and the wheel rotation detection module 130 senses the passage of the teeth of the disk 30, As the rotation information. The wheel rotation detection module 130 provides a signal for detecting when the teeth of the disk 30 pass, and the wheel rotation detection module 130 generates a pulse when the teeth pass by and when they pass through the toothless portion do.

In the present embodiment, the number of pulses generated by the wheel rotation detection module 130 is the rotation information of the wheel 10. Various sensors such as an optical sensor, an induction sensor, or a Hall effect sensor that can detect the passage of the teeth can be used as the sensor of the wheel rotation detection module 130.

The teeth of the disk 30 have a predetermined number of teeth. The number of teeth may be changed according to the type of the vehicle or the wheel 10 so that the number of pulses generated by the wheel rotation sensing module 130 can be changed when the wheel 10 rotates one rotation. In this embodiment, 48 teeth of the disk 30 may be formed. Accordingly, the wheel rotation detection module 130 can generate 96 pulses when the wheel 10 rotates one turn.

The wheel rotation detection module 130 detects the number of teeth that have passed from an arbitrary point in time and outputs the number of pulses. If the number of pulses generated by the wheel rotation sensing module 130 when the wheel 10 is rotated one rotation is N_pul, the number of pulses output by the wheel rotation sensing module 130 N_sh is as follows.

Number of pulses N_sh = N_pul * (P / 360 degrees)

For example, when the wheel 10 is rotated by 45 degrees, the wheel rotation detection module 130 outputs 12 pulses.

The wheel rotation sensing module 130 may be separately provided for the tire pressure sensing system 100, but is preferably part of an anti-lock brake system (ABS) of a vehicle in general. That is, the wheel rotation detection module 130 may be a wheel speed sensor of the lock prevention brake system.

The wheel rotation detection module 130 is provided in the same manner as the number of the wheels 10 so as to correspond to each wheel 10, And detects rotation information.

The plurality of wheel rotation detection modules 130 transmit rotation information (second wheel phase angle information) of the respective wheels 10 to the control unit 140. Each of the plurality of wheel rotation detection modules 130 is connected to the control unit 140 in a wired manner. Each of the plurality of wheel rotation sensing modules 130 is preferably connected to the control unit 140 via a CAN (Controller Area Network) bus.

The control unit 140 receives data from the tire pressure sensing module 120 and receives the second wheel phase angle information when the data is transmitted from the wheel rotation sensing module 130. The control unit 140 receives the first wheel phase angle information And the second wheel phase angle information are compared with each other to determine the position of the wheel on which the tire pressure sensing module is mounted.

Specifically, the control unit 140 calculates a first phase angular displacement from the first wheel phase angle information sequentially transmitted from the tire pressure sensing module 120, and when each first wheel phase angle information is transmitted The tire pressure sensing module 120 calculates the second phase angular displacement from the second wheel phase angle information of each wheel 10 and determines the wheel 10 whose first phase angular displacement and second phase angular displacement are in sequence, Mounted wheel 10, and gives the identification code transmitted from the tire pressure sensing module 120 to the wheel.

5 is a block diagram showing a configuration of a control unit according to an embodiment of the present invention.

5, the control unit 140 includes a tire information processing unit 141, a rotation information processing unit 142, and a control processing unit 143. [

The tire information processing unit 141 stores the data transmitted from the tire pressure sensing module 120 together with the transmission time. The tire information processing unit 141 calculates the phase angle of the wheel 10 when the tire pressure sensing module 120 transmits data from the first wheel phase angle information transmitted by the tire pressure sensing module 120, Save it together.

The rotation information processing unit 142 receives the rotation information of each wheel 10 from the plurality of wheel rotation detection modules 130. The rotation information processing unit 142 integrates the rotation information (second wheel phase angle information) of the wheel 10 received from the wheel rotation detection module 130 at an arbitrary point in time and stores the information.

The control processing unit 143 receives the phase angle of the wheel 10 according to the first wheel phase angle information from the tire information processing unit 141 and receives the phase angle of the wheel 10 from the rotation information processing unit 142 via the tire pressure sensing module 120 The second wheel phase angle information of each wheel 10 stored in the rotation information processing unit 142 at one time and compares the second wheel phase angle information to determine the position of the tire pressure sensing module 120.

At this time, since the second wheel phase angle information input from the wheel rotation detection module 130 has no reference value, whether or not the first wheel phase angle information and the second wheel phase angle information are coincident is determined by comparing the phase angle displacements Whether or not the information is stored.

The control processing unit 143 calculates a first phase angular displacement which is a difference in the position at which data is transmitted from the tire pressure sensing module 120 from the plurality of first wheel phase angle information. And also calculates the second phase angular displacement of each wheel 10 from the second wheel phase angle information at each wheel 10 measured at the time the respective first wheel phase angle information was transmitted. The control processing section 143 finds a case where the calculated first phase angular displacement and the second phase angular displacement in each wheel 10 coincide with each other so that the second phase angular displacement matches the first phase angular displacement The wheel 10 is determined as the wheel 10 mounted with the tire pressure sensing module 120 that transmitted the first wheel phase angle information.

The control processor 143 assigns and stores the identification code of the tire pressure sensing module 120 to the wheel 10 determined to have the tire pressure sensing module 120 installed therein.

As described above, according to the tire pressure sensing system 100 of the present invention, the position of the tire pressure sensing module 120 can be simply determined and automatically allocated in the direct type tire pressure sensing system.

In addition, since the position at which the tire pressure sensing module 120 transmits data to the control unit 140 is changed each time the transmission is performed, the risk of occurrence of error according to the signal shade area of the tire 20 or the wheel 10 is reduced It is effective.

Hereinafter, a method of automatically assigning a tire position according to an embodiment of the present invention will be described with reference to the accompanying drawings. However, the description of the same things as those described in the tire pressure sensing system 100 according to the embodiment of the present invention will be omitted.

6 is a flowchart illustrating a method of automatically assigning a tire position according to an exemplary embodiment of the present invention.

6, a method of automatically assigning a tire position according to an embodiment of the present invention is a method for automatically assigning a tire position to a tire pressure sensing module 120 provided on a wheel 10 or a tire 20, (S200) of transmitting the data including the identification code and the first wheel phase angle information at an arbitrary phase angle position (S200), a step (S200) (S300) of receiving the second wheel phase angle information at the time of transmitting the data from the wheel rotation detection module (130) for measuring the rotation of the first wheel phase angle information (10) And comparing the information with each other to determine the position of the wheel 10 mounted with the tire pressure sensing module 120 (S400).

In step S400 of determining the position of the wheel 10 mounted with the tire pressure sensing module 120, the first phase angle displacement is calculated from the first wheel phase angle information sequentially transmitted from the tire pressure sensing module 120 And calculates a second phase angle displacement from the second wheel phase angle information of each wheel (10) when each first wheel phase angle information is transmitted, wherein the first phase angle displacement and the second phase angle displacement are sequentially The wheel 10 matching the wheel pressure sensing module 120 is discriminated as the wheel 10 mounted with the tire pressure sensing module 120.

In the step S200 of transmitting data including the identification code and the first wheel phase angle information at an arbitrary phase angle position, the phase angle of the wheel 10 is divided into a plurality of phases, and phase angle numbers are assigned to the divided positions And transmits the data including the phase angle number and the identification code as the first wheel phase angle information at an arbitrary position among the divided positions.

Alternatively, in the step S200 of transmitting the data including the identification code and the first wheel phase angle information at an arbitrary phase angle position, the phase angle of the wheel 10 is divided into a plurality of phases, A plurality of transmission patterns in which phase angle numbers are arbitrarily arranged are stored, and an arbitrary transmission pattern among a plurality of transmission patterns stored is selected, and at a position indicated by a phase angle number according to each phase angle number listed in the transmission pattern, The transmission pattern information and the data including the identification code may be transmitted as the 1-wheel phase angle information.

Since the operation of each step is the same as that described in the tire pressure sensing system 100 according to the embodiment of the present invention, detailed description thereof will be omitted.

As described above, according to the tire position automatic allocation method of the present invention, the position of the tire pressure sensing module 120 can be simply determined and automatically allocated in the direct tire pressure sensing system.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: tire pressure sensing system
10: Wheel
20: Tire
30: Disk
120: Tire Pressure Sensing Module
130: Wheel rotation detection module
140: control unit

Claims (12)

A wheel or a tire, measuring a pressure and a wheel phase angle of the tire, dividing the phase angle of the wheel into a plurality of phases, assigning phase angle numbers to the divided positions, Selects a transmission pattern from among the plurality of transmission patterns stored and stores the transmission pattern information and the identification information as the first wheel phase angle information at a position indicated by the phase angle number according to each phase angle number listed in the transmission pattern, A tire pressure sensing module for transmitting data including a sign;
A wheel rotation detection module provided in the vehicle body and measuring the rotation of the wheel to provide second wheel phase angle information; And
Receiving the data from the tire pressure sensing module and receiving the second wheel phase angle information at the time of transmitting the data, and comparing the first wheel phase angle information and the second wheel phase angle information, And a control unit for determining the position of the wheel on which the pressure sensing module is mounted. The method according to claim 1,
Wherein the control unit comprises:
Calculating a first phase angular displacement from the first wheel phase angle information sequentially transmitted from the tire pressure sensing module and calculating a first phase angle displacement from the second wheel phase angle information of each wheel when each first wheel phase angle information is transmitted Wherein the first phase angle displacement and the second phase angle displacement are sequentially determined as the wheel equipped with the tire pressure sensing module, and the wheel is detected by the tire pressure sensing module And the transmitted identification code is given to the tire pressure detection system. delete delete The method according to claim 1,
The tire pressure sensing module includes:
A pressure sensor for measuring a pressure of the tire;
A phase angle sensor for measuring a phase angle of the wheel;
A pressure sensing transmission unit wirelessly transmitting data including a pressure value of the tire, an identification code, and first wheel phase angle information; And
And a pressure sensing control section for controlling the pressure sensing transmission section to transmit the data at an arbitrary phase angular position of the wheel. 6. The method of claim 5,
Wherein the phase angle sensor is provided as an acceleration sensor. The method according to claim 1,
Wherein the wheel rotation sensing module is a wheel speed sensor of an anti-lock braking system (ABS). The method according to claim 1,
Wherein the control unit comprises:
A tire information processing unit for receiving the data from the tire pressure sensing module and storing and processing the data;
A rotation information processing unit for receiving the second wheel phase angle information of each wheel from the wheel rotation detection module, storing and processing the second wheel phase angle information; And
And a control processor for automatically assigning the position of the tire pressure sensing module by comparing the first wheel phase angle information processed by the tire information processor and the second wheel phase angle information processed by the rotation information processor, Pressure sensing system. Measuring pressure and wheel phase angle of the tire in a tire pressure sensing module provided on a wheel or a tire;
Wherein the tire pressure sensing module divides the phase angle of the wheel into a plurality of segments, assigns phase angle numbers to the segmented positions, stores a plurality of transmission patterns arbitrarily arranged in the phase angle numbers, Selecting an arbitrary transmission pattern and transmitting data including the transmission pattern information and the identification code as first wheel phase angle information at a position indicated by the phase angle number according to each phase angle number listed in the transmission pattern;
Receiving second wheel phase angle information at the time of transmitting the data from the wheel rotation detection module provided in the vehicle body and measuring the rotation of the wheel; And
And comparing the first wheel phase angle information with the second wheel phase angle information to determine a position of the wheel on which the tire pressure sensing module is mounted. 10. The method of claim 9,
In the step of determining the position of the wheel on which the tire pressure sensing module is mounted,
Calculating a first phase angular displacement from the first wheel phase angle information sequentially transmitted from the tire pressure sensing module and calculating a first phase angle displacement from the second wheel phase angle information of each wheel when each first wheel phase angle information is transmitted Wherein the second phase angular displacement is calculated and the wheel in which the first phase angular displacement and the second phase angular displacement are sequentially matched is discriminated by the wheel on which the tire pressure sensing module is mounted. delete delete
KR1020130159974A 2013-12-20 2013-12-20 Tire Pressure Monitoring System and Method for Performing Auto-location thereof KR101512399B1 (en)

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Citations (1)

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KR20120094476A (en) * 2009-09-22 2012-08-24 슈레이더 일렉트로닉스 리미티드 System and method for performing auto-location of a wheel in a vehicle using wheel phase angle information

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KR20120094476A (en) * 2009-09-22 2012-08-24 슈레이더 일렉트로닉스 리미티드 System and method for performing auto-location of a wheel in a vehicle using wheel phase angle information

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