Tire air pressure monitoring system
First Claim
1. A tire air pressure monitoring system comprising:
- a tire air pressure detecting device coupled to each tire of a vehicle includinga pressure detecting section configured and arranged to detect a tire air pressure,a transmitting section configured and arranged to transmit a wireless signal indicative of at least the tire air pressure detected by the pressure detecting section, anda transmission control section operatively coupled to the pressure detecting section and the transmitting section, and configured to selectively control transmission of the wireless signal from the transmitting section to selectively operate a rest mode, a normal mode in which the wireless signal is transmitted in at least a first prescribed interval, and a generally continuous transmission mode in which the wireless signal is transmitted in a continuous transmission interval that is shorter than the first prescribed interval; and
a tire air pressure alarm control device coupled to the vehicle includinga receiving section configured and arranged to receive the wireless signal from the transmitting section of the tire air pressure detecting device, andan alarm control section configured to issue an alarm when the tire air pressure is equal to or less than a prescribed pressure,the transmission control section of the tire air pressure detecting device being further configured to shift from the rest mode to the generally continuous transmission mode upon determination of decrease in the tire air pressure by an amount equal to or greater than a prescribed amount within a prescribed period of time, and to shift from the generally continuous transmission mode to the normal mode upon determination of a continuous transmission termination condition that indicates the receiving section of the tire air pressure alarm control device can receive the wireless signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A tire air pressure monitoring system includes a tire air pressure detecting device mounted to each tire of a vehicle having a transmitting section configured to wirelessly transmit necessary data including the tire air pressure data measured by a pressure detecting section at a prescribed interval, and an tire air pressure alarm control device that are mounted in the vehicle and configured to receive the wireless signal transmitted from the tire air pressure detecting device. A transmission control section of the tire air pressure detecting device is configured to initiate a generally continuous transmission at a continuous transmission interval that is shorter than the prescribed interval when the tire air pressure decreases by an amount equal to or greater than a prescribed amount within a prescribed time, and to terminate the generally continuous transmission when the tire air pressure alarm control device is capable of reception of the wireless signal.
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Citations
16 Claims
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1. A tire air pressure monitoring system comprising:
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a tire air pressure detecting device coupled to each tire of a vehicle including a pressure detecting section configured and arranged to detect a tire air pressure, a transmitting section configured and arranged to transmit a wireless signal indicative of at least the tire air pressure detected by the pressure detecting section, and a transmission control section operatively coupled to the pressure detecting section and the transmitting section, and configured to selectively control transmission of the wireless signal from the transmitting section to selectively operate a rest mode, a normal mode in which the wireless signal is transmitted in at least a first prescribed interval, and a generally continuous transmission mode in which the wireless signal is transmitted in a continuous transmission interval that is shorter than the first prescribed interval; and a tire air pressure alarm control device coupled to the vehicle including a receiving section configured and arranged to receive the wireless signal from the transmitting section of the tire air pressure detecting device, and an alarm control section configured to issue an alarm when the tire air pressure is equal to or less than a prescribed pressure, the transmission control section of the tire air pressure detecting device being further configured to shift from the rest mode to the generally continuous transmission mode upon determination of decrease in the tire air pressure by an amount equal to or greater than a prescribed amount within a prescribed period of time, and to shift from the generally continuous transmission mode to the normal mode upon determination of a continuous transmission termination condition that indicates the receiving section of the tire air pressure alarm control device can receive the wireless signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tire air pressure monitoring system comprising:
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pressure detecting means for detecting a tire air pressure of each tire of a vehicle; transmitting means for wirelessly transmitting a wireless signal indicative of at least the tire air pressure detected by the pressure detecting means; receiving means for receiving the wireless signal from the transmitting means; transmission control means for selectively controlling transmission of the wireless signal from the transmitting means to the receiving means to selectively operate a rest mode, a normal mode in which the wireless signal is transmitted in at least a first prescribed interval, and a generally continuous transmission mode in which the wireless signal is transmitted in a continuous transmission interval that is shorter than the first prescribed interval by shifting from the rest mode to the generally continuous transmission mode upon determination of decrease in the tire air pressure by an amount equal to or greater than a prescribed amount within a prescribed period of time, and by shifting from the generally continuous transmission mode to the normal mode upon determination of a continuous transmission termination condition that indicates the receiving section of the tire air pressure alarm control device can receive the wireless signal; and alarm control means for issuing an alarm when the tire air pressure received by the receiving means is equal to or less than a prescribed pressure.
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16. A method of controlling a tire air pressure monitoring system comprising:
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detecting a tire air pressure of each tire of a vehicle; transmitting a wireless signal indicative of at least the tire air pressure that was detect to a receiver; selectively controlling transmission of the wireless signal to selectively operate a rest mode, a normal mode in which the wireless signal is transmitted in at least a first prescribed interval, and a generally continuous transmission mode in which the wireless signal is transmitted in a continuous transmission interval that is shorter than the first prescribed interval; shifting from the rest mode to the generally continuous transmission mode upon determination of decrease in the tire air pressure by an amount equal to or greater than a prescribed amount within a prescribed period of time; shifting from the generally continuous transmission mode to the normal mode upon determination of a continuous transmission termination condition that indicates the wireless signal can be received by the receiver; and issuing an alarm when the tire air pressure received by the receiver is equal to or less than a prescribed pressure.
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Specification