Tire monitoring device and system
First Claim
1. A tire monitoring system for a vehicle, comprising:
- a plurality of tire monitoring devices each comprising;
a first acceleration sensor and a second acceleration sensor respectively configured to measure accelerations in first and second directions on a plane perpendicular to a wheel axis,an RF transmitter, anda controller configured to determine 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, determine a calculated value based on the measured accelerations in the first direction and the second direction and determine whether or not a tire event has occurred based on the 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
0 Petitions
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.
9 Citations
20 Claims
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1. A tire monitoring system for a vehicle, comprising:
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a plurality of tire monitoring devices each comprising; a first acceleration sensor and a second acceleration sensor respectively configured to measure accelerations in first and second directions on a plane perpendicular to a wheel axis, an RF transmitter, and a controller configured to determine 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, determine a calculated value based on the measured accelerations in the first direction and the second direction and determine whether or not a tire event has occurred based on the 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 first acceleration sensor and a second acceleration sensor respectively configured to measure accelerations in a first direction and a second direction; a radio frequency (RF) transmitter configured to transmit measured values of the acceleration sensors; and a controller configured to determine a calculated value based on the measured accelerations in the first direction and the second direction and determine whether or not a tire event has occurred based on the calculated value. - View Dependent Claims (7, 8, 9, 10, 11, 16, 17, 18, 19, 20)
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12. A tire monitoring system for a vehicle having a plurality of wheels, comprising:
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a plurality of tire monitoring devices each coupled to a wheel, each tire monitoring device comprising; 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 acceleration sensors; and a controller configured to determine a calculated value based on the measured accelerations in the first direction and the second direction and determine whether or not a tire event has occurred with based on the calculated value; 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