Tire Monitoring Device and System
First Claim
1. A tire monitoring system for a vehicle, comprising:
- a plurality of tire monitoring devices including a tire monitoring sensor unit having a state monitoring sensor monitoring a tire state and a first acceleration sensor and a second acceleration sensor respectively measuring accelerations in first and second directions on a plane perpendicular to a wheel axis, an RF transmitter, and a controller determining whether a wheel is on a left or right side of a vehicle on the basis of a relationship between alternating signals of the first acceleration sensor and the second acceleration sensor and determining whether or not a tire event has occurred with reference to a calculated value of the accelerations measured by the first acceleration sensor and the second acceleration sensor, and attached to wheels; and
a central control unit mounted on the vehicle and including a receiver receiving a signal from the RF transmitter.
1 Assignment
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Accused Products
Abstract
A tire monitoring device may be used in conjunction with a tire monitoring system for a vehicle. The tire monitoring device includes a tire monitoring sensor unit having a state monitoring sensor monitoring a tire state, such as a tire pressure, and a first acceleration sensor and a second acceleration sensor respectively measuring accelerations in first and second directions on a plane perpendicular to a wheel axis, and a controller. The controller is configured to determine whether a wheel is on the left or right side of the vehicle on the basis of a relationship between alternating signals of the first acceleration sensor and the second acceleration sensor and determining whether or not a tire event has occurred with reference to a calculated value based on the accelerations measured by the first acceleration sensor and the second acceleration sensor. The tire monitoring device performs minimum operation required for automatic tire location recognition, thereby minimizing battery consumption and reducing the calculation load of the tire monitoring device itself and a central control unit.
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Citations
15 Claims
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1. A tire monitoring system for a vehicle, comprising:
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a plurality of tire monitoring devices including a tire monitoring sensor unit having a state monitoring sensor monitoring a tire state and a first acceleration sensor and a second acceleration sensor respectively measuring accelerations in first and second directions on a plane perpendicular to a wheel axis, an RF transmitter, and a controller determining whether a wheel is on a left or right side of a vehicle on the basis of a relationship between alternating signals of the first acceleration sensor and the second acceleration sensor and determining whether or not a tire event has occurred with reference to a calculated value of the accelerations measured by the first acceleration sensor and the second acceleration sensor, and attached to wheels; and a central control unit mounted on the vehicle and including a receiver receiving a signal from the RF transmitter. - View Dependent Claims (2, 3, 4, 5)
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6. A tire monitoring device, comprising:
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a pressure sensor; a first acceleration sensor and a second acceleration sensor respectively configured to measure accelerations in a first direction and a second direction on a plane; a radio frequency (RF) transmitter configured to transmit measured values of the pressure sensor and the acceleration sensors; and a controller configured to determine whether or not a tire event has occurred with reference to a calculated value based on the accelerations measured by the first acceleration sensor and the second acceleration sensor. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A tire monitoring system for a vehicle having a plurality of wheels, comprising:
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a tire monitoring device mounted on each wheel, the tire monitoring device comprising; a pressure sensor; a first acceleration sensor and a second acceleration sensor respectively configured to measure accelerations in a first direction and a second direction on a plane; a radio frequency (RF) transmitter configured to transmit measured values of the pressure sensor and the acceleration sensors; and a controller configured to determine whether or not a tire event has occurred with reference to a calculated value based on the accelerations measured by the first acceleration sensor and the second acceleration sensor; and a central control unit mounted on the vehicle, the central control unit including a receiver configured to receive signals from the RF transmitter of each tire monitoring device. - View Dependent Claims (13, 14, 15)
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Specification