Method and apparatus for monitoring conditions of a vehicle tire
First Claim
1. A method of monitoring a pneumatic tire which is mounted on a rim forming an internal pressure cavity, said method comprising the steps of:
- providing a memory device containing identification data pertaining specifically to the tire and a first antenna for transmitting said identification data;
securing the memory device permanently to the tire within said internal pressure cavity;
providing a monitoring device which includes a sensor, an amplifier, a second antenna, a first power source and a control circuit for sensing the tire identification data stored in the memory device when transmitted by wireless communication form the first antenna;
securing the monitoring device on the rim remote from the memory device;
transmitting by wireless communication the stored identification data from the memory device to the monitoring device independent of the operating condition of the tire; and
retransmitting the stored identification data from the monitoring device to a remote location independent of the operating condition of the tire.
6 Assignments
0 Petitions
Accused Products
Abstract
A method for monitoring various physical conditions of pneumatic tires and to a tire which includes a memory device mounted on the interior of the tire within the pressurizable cavity and a separate monitoring device mounted on the tire rim. The memory device contains a battery, an antenna and stored data pertaining to the tire. The monitoring device uses an active self-powered programmable electronic circuitry which obtains data from the memory device and in addition contains one or more sensors which obtains engineering conditions such as temperature, pressure, tire rotation and/or other operated conditions of the pneumatic tire along with the stored information from the memory device. The memory device can be actuated by externally transmitted radio frequency waves from a remote location or by signals from the monitoring device, and the monitoring device can transmit the information to the remote location by a separate, larger and more powerful battery which is mounted on the tire rim than the battery in the memory device.
81 Citations
17 Claims
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1. A method of monitoring a pneumatic tire which is mounted on a rim forming an internal pressure cavity, said method comprising the steps of:
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providing a memory device containing identification data pertaining specifically to the tire and a first antenna for transmitting said identification data; securing the memory device permanently to the tire within said internal pressure cavity; providing a monitoring device which includes a sensor, an amplifier, a second antenna, a first power source and a control circuit for sensing the tire identification data stored in the memory device when transmitted by wireless communication form the first antenna; securing the monitoring device on the rim remote from the memory device; transmitting by wireless communication the stored identification data from the memory device to the monitoring device independent of the operating condition of the tire; and retransmitting the stored identification data from the monitoring device to a remote location independent of the operating condition of the tire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A tire mounted on a rim and defining a pressurizable cavity between the tire and rim and having means for monitoring the tire, said monitoring means including:
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a memory device permanently mounted on the tire within the pressurizable cavity and containing stored identification data pertaining to the tire and a first antenna for transmitting the identification data; a monitoring device spaced from the memory device mounted on the rim, said monitoring device including a first battery, an amplifier, a control circuit for sensing the stored identification data in the memory device by wireless communication from the first antenna of said memory device independent of the operating condition of the tire, and a second antenna for transmitting the sensed stored identification data to a location remote from the tire. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification