Communication system and method for communicating between a tire/wheel assembly and a vehicle body
First Claim
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1. A communication system for communicating between a tire/wheel assembly and a vehicle body, comprising:
- a wheel-side communication device mounted on the tire/wheel assembly so as to rotate together with the tire/wheel assembly;
a body-side communication device mounted in a fixed position to the vehicle body;
a rotational position detecting device that detects a rotational position of the tire/wheel assembly,wherein the body-side communication device transmits a signal to the wheel-side communication device at a body-side transmission timing in accordance with the rotational position of the tire/wheel assembly; and
a body-side transmission timing determining device that sets the body-side transmission timing based on a relationship between i) the rotational position detected by the rotational position detecting device and ii) a received signal level which is a level of a signal received by one of the body-side communication device and the wheel-side communication device from the other.
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Abstract
A communication system for communicating between a tire/wheel assembly and a body of a vehicle of a construction in which the tire/wheel assembly is supported by the vehicle body, has a i) wheel-side communication device that is mounted to the tire/wheel assembly and rotates together with the tire/wheel assembly, and ii) a body-side communication device that is mounted in a fixed position to the vehicle body. The communication system performs communication between the wheel-side communication device and the body-side communication device according to a predetermined rotational position of the tire/wheel assembly.
29 Citations
21 Claims
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1. A communication system for communicating between a tire/wheel assembly and a vehicle body, comprising:
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a wheel-side communication device mounted on the tire/wheel assembly so as to rotate together with the tire/wheel assembly; a body-side communication device mounted in a fixed position to the vehicle body; a rotational position detecting device that detects a rotational position of the tire/wheel assembly, wherein the body-side communication device transmits a signal to the wheel-side communication device at a body-side transmission timing in accordance with the rotational position of the tire/wheel assembly; and a body-side transmission timing determining device that sets the body-side transmission timing based on a relationship between i) the rotational position detected by the rotational position detecting device and ii) a received signal level which is a level of a signal received by one of the body-side communication device and the wheel-side communication device from the other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A communication system for communicating between a tire/wheel assembly and a vehicle body, comprising:
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a wheel-side communication device mounted on the tire/wheel assembly so as to rotate together with the tire/wheel assembly; a body-side communication device mounted in a fixed position to the vehicle body; and a rotation state amount sensor mounted on the tire/wheel assembly so as to detect a rotation state amount of the tire/wheel assembly, wherein the wheel-side communication device transmits a signal to the body-side communication device at a wheel-side transmission timing in accordance with a rotational position of the tire/wheel assembly and based on the rotation state amount of the tire/wheel assembly; and wherein the rotation state amount sensor includes an acceleration sensor which i) has directionality, ii) detects an acceleration, iii) is mounted to the tire/wheel assembly at a fixed position away from a rotational axis of the tire/wheel assembly, and iv) rotates together with the tire/wheel assembly around the rotational axis thereof. - View Dependent Claims (18)
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19. A communication method for communicating between a tire/wheel assembly and a vehicle body, comprising:
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detecting a rotational position of the tire/wheel assembly; and transmitting a signal, at a body-side transmission timing in accordance with the rotational position of the tire/wheel assembly, from the body-side communication device mounted in a fixed position to the vehicle body to the wheel-side communication device mounted on the tire/wheel assembly so as to rotate together with the tire/wheel assembly, wherein the body-side transmission timing is set based on a relationship between i) the rotational position detected and ii) a received signal level which is a level of a signal received by one of the body-side communication device and the wheel-side communication device from the other. - View Dependent Claims (20, 21)
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Specification