Vehicle wheel state monitoring device and method
First Claim
1. A vehicle wheel state monitoring device comprising:
- a detector which is provided on a vehicle wheel and which detects an up-down direction force transmitted from a road surface to a tire of the vehicle wheel;
a calculation unit that calculates a road surface input that is a load applied to the tire using the detected up-down direction force;
a recording device which is provided on the vehicle wheel and which pre-records information related to the vehicle wheel;
a vehicle wheel distinguishing unit that distinguishes a type of the vehicle wheel based on the information which is received from the recording device;
a setting unit that sets a first threshold value in accordance with the distinguished type of the vehicle wheel; and
a determination unit that determines whether it is probable that the vehicle wheel is damaged by comparing the road surface input and the set first threshold value.
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Accused Products
Abstract
A vehicle wheel state monitoring device appropriately determines whether it is probable that a vehicle wheel is damaged by setting a threshold value for damage determination in accordance with a type of the vehicle wheel fitted to the vehicle. A road surface input calculation portion calculates a road surface input that is a load applied to the tire based on an up-down direction force transmitted to the tire from a road surface. A damage determination portion determines whether it is probable that the vehicle wheel is damaged by comparing the road surface input and a threshold value that is pre-set. A vehicle wheel distinguishing portion receives information from a recording device provided on the vehicle wheel, and distinguishes the type of vehicle wheel fitted to the vehicle wheel. A threshold setting portion sets a threshold value in accordance with the distinguished type of the vehicle wheel.
15 Citations
9 Claims
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1. A vehicle wheel state monitoring device comprising:
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a detector which is provided on a vehicle wheel and which detects an up-down direction force transmitted from a road surface to a tire of the vehicle wheel; a calculation unit that calculates a road surface input that is a load applied to the tire using the detected up-down direction force; a recording device which is provided on the vehicle wheel and which pre-records information related to the vehicle wheel; a vehicle wheel distinguishing unit that distinguishes a type of the vehicle wheel based on the information which is received from the recording device; a setting unit that sets a first threshold value in accordance with the distinguished type of the vehicle wheel; and a determination unit that determines whether it is probable that the vehicle wheel is damaged by comparing the road surface input and the set first threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle wheel state monitoring method comprising:
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detecting an up-down direction force transmitted from a road surface to a tire of a vehicle wheel; calculating a road surface input that is a load applied to the tire using the detected up-down direction force; receiving information from a recording device that pre-records information related to the vehicle wheel, the recording device being provided on the vehicle wheel; distinguishing a type of the vehicle wheel based on the received information; setting a threshold value in accordance with the distinguished type of the vehicle wheel; determining whether it is probable that the vehicle wheel is damaged by comparing the road surface input and the set threshold value; and outputting a signal to a warning device when it is determined that vehicle wheel damage is probable.
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9. A computer-readable storage medium that stores a program for monitoring a vehicle wheel state, the program comprising instructions that cause a computer to perform the steps of:
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detecting an up-down direction force transmitted from a road surface to a tire of a vehicle wheel; calculating a road surface input that is a load applied to the tire using the detected up-down direction force; receiving information from a recording device that pre-records information related to the vehicle wheel, the recording device being provided on the vehicle wheel; distinguishing a type of the vehicle wheel based on the received information; setting a threshold value in accordance with the distinguished type of the vehicle wheel; determining whether it is probable that the vehicle wheel is damaged by comparing the road surface input and the set threshold value; and outputting a signal to a warning device when it is determined that vehicle wheel damage is probable.
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Specification