Transmitter for tire condition monitoring apparatus and the tire condition monitoring apparatus
First Claim
1. A transmitter for a tire condition monitoring apparatus, wherein the transmitter is located in a tire of a vehicle and transmits data indicating the tire condition using a carrier wave, the transmitter comprising:
- an oscillating circuit, which generates a carrier wave frequency, wherein said oscillating circuit has a predetermined characteristic carrier wave frequency; and
a controller, wherein the controller corrects the generated carrier wave frequency in accordance with the difference between the characteristic carrier wave frequency and a predetermined reference carrier wave frequency.
2 Assignments
0 Petitions
Accused Products
Abstract
A transmitter for a tire condition monitoring apparatus is located in a tire of a vehicle and transmits data indicating the tire condition using a carrier wave. The transmitter includes an oscillating circuit and a controller. The oscillating circuit generates a carrier wave frequency and has a predetermined characteristic carrier wave frequency. The controller corrects the generated carrier wave frequency in accordance with the difference between the characteristic carrier wave frequency and a predetermined reference carrier wave frequency.
16 Citations
11 Claims
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1. A transmitter for a tire condition monitoring apparatus, wherein the transmitter is located in a tire of a vehicle and transmits data indicating the tire condition using a carrier wave, the transmitter comprising:
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an oscillating circuit, which generates a carrier wave frequency, wherein said oscillating circuit has a predetermined characteristic carrier wave frequency; and
a controller, wherein the controller corrects the generated carrier wave frequency in accordance with the difference between the characteristic carrier wave frequency and a predetermined reference carrier wave frequency. - View Dependent Claims (2, 3, 4, 5)
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6. A tire condition monitoring apparatus comprising:
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a transmitter located in a tire of a vehicle;
a tire condition sensor for detecting the condition of the tire of the vehicle;
a transmission circuit for transmitting data indicating the tire condition detected by the tire condition sensor using a carrier wave;
an oscillating circuit, which generates a carrier wave frequency, wherein said oscillating circuit has a predetermined characteristic carrier wave frequency;
a controller, which corrects the generated carrier wave frequency in accordance with the difference between the characteristic carrier wave frequency and a predetermined reference carrier wave frequency; and
a receiver located in a vehicle body of the vehicle, wherein the receiver receives the data indicating the tire condition transmitted from the transmitter. - View Dependent Claims (7, 8, 9, 10)
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11. A transmitter for a tire condition monitoring apparatus, wherein the transmitter is located in a tire of a vehicle and transmits data indicating the tire condition using a carrier wave, the transmitter comprising:
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an oscillating circuit, which generates a carrier wave frequency, wherein said oscillating circuit has a predetermined characteristic carrier wave frequency;
a temperature sensor for detecting the internal temperature of the tire; and
a controller, wherein the controller performs a primary correction on the generated carrier wave frequency based on a frequency deviation caused by manufacturing tolerance of the oscillating circuit in accordance with a correction data, and wherein the controller further performs a secondary correction on the generated carrier wave frequency that has been through the primary correction in accordance with the internal temperature detected by the temperature sensor.
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Specification