Tire pressure monitoring system and method for performing auto-location thereof
First Claim
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1. A tire pressure monitoring system comprising:
- a tire pressure monitoring module provided in a wheel or a tire, the tire pressure monitoring module measuring pressure of the tire and a wheel phase angle of the wheel,transmitting a burst signal comprising consecutive data frames including a tire pressure information and an identification code at a predetermined position of the phase angle, andsetting a delay time between the consecutive data frames of the burst signal based on the predetermined position of the phase angle;
a wheel monitoring sensor provided in a vehicle body, the wheel monitoring sensor measuring rotation of the wheel to provide phase angle information of the wheel; and
a control unit, the control unit receiving the burst signal from the tire pressure monitoring module,receiving the phase angle information of the wheel at the time of transmitting the burst signal from the wheel monitoring sensor,calculating the predetermined position of the phase angle from the delay time, andcomparing the calculated predetermined position of the phase angle and the phase angle information of the wheel with each other to identify a position of the wheel on which the tire pressure monitoring module is mounted,wherein the tire pressure monitoring module partitions the phase angle of the wheel into a plurality of phase angles to assign phase angle numbers to respective partitioned positions,stores a plurality of transmission patterns in which the phase angle numbers are randomly arranged,randomly selects a transmission pattern among the plurality of transmission patterns, andcalculates and applies the delay time based on transmission pattern information representing a position indicated by the phase angle number at the position according to each of the phase angle numbers arranged in the plurality of transmission patterns,wherein each of the phase angle numbers is generated by using a random variable.
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Abstract
Disclosed is a tire pressure monitoring system and a method for performing auto-location thereof that simply identifies the position of a tire pressure monitoring module in a direct scheme tire pressure monitoring system to perform auto-location.
6 Citations
12 Claims
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1. A tire pressure monitoring system comprising:
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a tire pressure monitoring module provided in a wheel or a tire, the tire pressure monitoring module measuring pressure of the tire and a wheel phase angle of the wheel, transmitting a burst signal comprising consecutive data frames including a tire pressure information and an identification code at a predetermined position of the phase angle, and setting a delay time between the consecutive data frames of the burst signal based on the predetermined position of the phase angle; a wheel monitoring sensor provided in a vehicle body, the wheel monitoring sensor measuring rotation of the wheel to provide phase angle information of the wheel; and a control unit, the control unit receiving the burst signal from the tire pressure monitoring module, receiving the phase angle information of the wheel at the time of transmitting the burst signal from the wheel monitoring sensor, calculating the predetermined position of the phase angle from the delay time, and comparing the calculated predetermined position of the phase angle and the phase angle information of the wheel with each other to identify a position of the wheel on which the tire pressure monitoring module is mounted, wherein the tire pressure monitoring module partitions the phase angle of the wheel into a plurality of phase angles to assign phase angle numbers to respective partitioned positions, stores a plurality of transmission patterns in which the phase angle numbers are randomly arranged, randomly selects a transmission pattern among the plurality of transmission patterns, and calculates and applies the delay time based on transmission pattern information representing a position indicated by the phase angle number at the position according to each of the phase angle numbers arranged in the plurality of transmission patterns, wherein each of the phase angle numbers is generated by using a random variable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for performing auto-location of a tire, the method comprising:
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measuring, by a tire pressure monitoring module provided in a wheel or the tire, pressure of the tire and a wheel phase angle of the wheel; transmitting, by the tire pressure monitoring module, a burst signal comprising consecutive data frames including a tire pressure information and an identification code at a predetermined position of the phase angle, wherein a delay time between the consecutive data frames of the burst signal is set based on the predetermined position of the phase angle; receiving phase angle information at the time of transmitting the burst signal from a wheel monitoring sensor provided in a vehicle body and measuring rotation of the wheel; and calculating the predetermined position of the phase angle from the delay time and comparing the calculated predetermined position of the phase angle with the phase angle information to identify a position of the wheel on which the tire pressure monitoring module is mounted, wherein the phase angle of the wheel is partitioned into the plurality of phase angles to assign phase angle number to the respective partitioned positions, a plurality of transmission patterns is stored, in which the phase angle numbers are randomly arranged, a transmission pattern is randomly selected among the plurality of transmission patterns, and the delay time is calculated and applied based on transmission pattern information representing a position indicated by the phase angle number at the position according to each of the phase angle numbers arranged in the plurality of transmission patterns, wherein each of the phase angle numbers is generated by using a random variable. - View Dependent Claims (10, 11, 12)
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Specification