Tire monitoring transmitter with various operation modes
First Claim
1. A transmitter of an apparatus for monitoring the condition of a tire attached to a vehicle, comprising:
- a tire condition sensor, wherein the tire condition sensor measures a parameter indicating the condition of the tire;
a transmitting circuit, wherein the transmitting circuit wirelessly transmits, at a variable bit rate, data representing the measured parameter;
wherein the transmitted data indicates the condition of the associated tire regardless of the operation mode of the vehicle and a controller, associated with the transmission circuit, wherein the controller controls the variable bit rate of the data transmitted by the transmitting circuit.
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Accused Products
Abstract
A transmitter of a tire condition monitoring apparatus has a pressure sensor, a transmitting circuit, and a transmission controller. The pressure sensor measures the air pressure of a tire. The transmitting circuit wirelessly transmits data indicating the measurement at a variable bit rate. The transmission controller controls the transmitting circuit). More specifically, the transmission controller varies the bit rate depending on the traveling speed of a vehicle, which is detected by a vehicle speed sensor. The transmission controller then causes the transmitting circuit to transmit data at the varied bit rate. Accordingly, regardless of the operation mode of the vehicle, the data is transmitted at an optimal bit rate.
68 Citations
18 Claims
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1. A transmitter of an apparatus for monitoring the condition of a tire attached to a vehicle, comprising:
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a tire condition sensor, wherein the tire condition sensor measures a parameter indicating the condition of the tire;
a transmitting circuit, wherein the transmitting circuit wirelessly transmits, at a variable bit rate, data representing the measured parameter;
wherein the transmitted data indicates the condition of the associated tire regardless of the operation mode of the vehicle anda controller, associated with the transmission circuit, wherein the controller controls the variable bit rate of the data transmitted by the transmitting circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for monitoring the condition of a tire attached to a vehicle having an engine, comprising:
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a transmitter, which is attached to the tire, wherein the transmitter includes;
a tire condition sensor, wherein the tire condition sensor measures a parameter indicting the condition of the tire;
a transmitting circuit, wherein the transmitting circuit wirelessly transmits, at a variable bit rate, data representing measured parameter;
the transmitter having a specific identification code, transmits the identification code together with the data representing the measured parameter, operates in a normal operation mode for transmitting the data at predetermined time intervals or a registration mode for transmitting the data in response to a predetermined external signal, and transmits the data at a different combination of bit rates in the registration mode from that of the normal operation mode; and
when receiving the data from the transmitter, the receiver determines which mode the transmitter is operating in based on a pattern of the bit rate combination of the data, and if the transmitter is determined to be operating in the registration mode, the receiver registers the identification code, which is included in the received data; and
a controller, associated with the transmission circuit, wherein the controller controls the variable bit rate of the data transmitted by the transmitting circuit; and
a receiver, wherein the receiver receives and processes the transmitted data. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for monitoring the condition of a tire attached to a vehicle, comprising the steps of:
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measuring a parameter indicating the condition of the tire;
wirelessly transmitting, at a variable bit rate, data representing the measured parameter; and
varying the variable bit rate of the transmitted data in accordance with a traveling speed of the vehicle.
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18. A method for monitoring the condition of a tire attached to a vehicle, comprising the steps of:
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measuring a parameter indicating the condition of the tire; and
wirelessly transmitting data representing the measured parameter at more than one bit rate indicating data regardless of the operation mode of the vehicle.
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Specification