TIRE AIR PRESSURE MEASURING APPARATUS
First Claim
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1. A tire air pressure measuring apparatus comprising:
- a tire air pressure measuring unit which rotates together with tires of a vehicle and sends an air pressure data signal on an air pressure of the tires at predetermined transmitting intervals;
a receiver unit for receiving the air pressure data signal;
a vehicle-stop judgment unit which determined that the vehicle stops only when a predetermined vehicle-stop condition is met; and
a warning unit which provides a warning of an error of the tire air pressure measuring unit only when it is not determined that the vehicle stops and also the receiver unit has not received the air pressure data signal for an error determining duration which is longer than the transmitting interval,wherein the tire air pressure measuring unit and the receiver unit transmit signals wirelessly.
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Accused Products
Abstract
A tire pressure measuring apparatus provides a warning of an error of a tire air pressure measuring module only when it is not that determined a vehicle stops and also any on of receivers has not received an air pressure data signal for an error determining duration. Therefore, a probability of a false warning can be reduced.
7 Citations
5 Claims
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1. A tire air pressure measuring apparatus comprising:
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a tire air pressure measuring unit which rotates together with tires of a vehicle and sends an air pressure data signal on an air pressure of the tires at predetermined transmitting intervals; a receiver unit for receiving the air pressure data signal; a vehicle-stop judgment unit which determined that the vehicle stops only when a predetermined vehicle-stop condition is met; and a warning unit which provides a warning of an error of the tire air pressure measuring unit only when it is not determined that the vehicle stops and also the receiver unit has not received the air pressure data signal for an error determining duration which is longer than the transmitting interval, wherein the tire air pressure measuring unit and the receiver unit transmit signals wirelessly. - View Dependent Claims (2, 3, 4, 5)
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Specification