Tire-interior monitoring apparatus
First Claim
1. A tire-interior monitoring apparatus, comprising:
- a detector for detecting a physical parameter of the interior of a tire;
a group of signal transmission coils including a signal-transmitting coil and a signal-receiving coil that are disposed in such a manner as to be rotatable relative to each other, said group of signal transmission coils being arranged such that a signal corresponding to the physical parameter detected by said detector is transmitted from said signal-transmitting coil to said signal-receiving coil through mutual induction; and
a group of power supply coils including a power-supplying coil and a power-receiving coil that are disposed in such a manner as to be rotatable relative to each other, said group of power supply coils being arranged such that an electromotive force is generated in said power-receiving coil through mutual induction so as to supply electric power to said detector,wherein said signal-transmitting coil, said power-receiving coil, said signal-receiving coil, and said power-supplying coil are arranged to be substantially concentric in a substantially identical plane, said monitoring apparatus further comprising an electric conductor providing an electromagnetic shielding between said group of signal transmission coils and said group of power supply coils.
1 Assignment
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Accused Products
Abstract
An apparatus for monitoring the tire interior by supplying electric power from a power source on a chassis side to a tire-side sensor via a power-supplying coil and a power-receiving coil, and by transmitting a sensor output via a signal-transmitting coil and a signal-receiving coil. The signal-transmitting coil and the power-receiving coil, as well as the signal-receiving coil and the power-supplying coil, are respectively arranged to be substantially concentric in a respective substantially identical plane, and an electromagnetic shielding is provided so as to prevent noise from being mixed in the sensor output. The arrangement makes compact a coupling portion on the chassis side and a coupling portion on the tire side.
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Citations
8 Claims
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1. A tire-interior monitoring apparatus, comprising:
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a detector for detecting a physical parameter of the interior of a tire; a group of signal transmission coils including a signal-transmitting coil and a signal-receiving coil that are disposed in such a manner as to be rotatable relative to each other, said group of signal transmission coils being arranged such that a signal corresponding to the physical parameter detected by said detector is transmitted from said signal-transmitting coil to said signal-receiving coil through mutual induction; and a group of power supply coils including a power-supplying coil and a power-receiving coil that are disposed in such a manner as to be rotatable relative to each other, said group of power supply coils being arranged such that an electromotive force is generated in said power-receiving coil through mutual induction so as to supply electric power to said detector, wherein said signal-transmitting coil, said power-receiving coil, said signal-receiving coil, and said power-supplying coil are arranged to be substantially concentric in a substantially identical plane, said monitoring apparatus further comprising an electric conductor providing an electromagnetic shielding between said group of signal transmission coils and said group of power supply coils. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification