Method of monitoring conditions of vehicle tires
DCFirst Claim
1. A method of monitoring at least one engineering condition of a tire, comprising the steps of:
- providing the tire with a monitoring device, the monitoring device including a sensor, an amplifier, an antenna, a power source having an active mode and a dormant mode, a circuit for data band switching, and an integrated circuit including data storage;
securing the monitoring device within the tire in such a manner and location as to minimize stress, strain, cyclic fatigue, impact and vibration;
sensing the engineering condition of the tire;
storing the sensed engineering condition of the tire as data in the data storage of the integrated circuit;
activating the power source using data band switching;
transmitting the stored data in the data storage of the integrated circuit and the current sensed engineering condition of the tire as amplified electronic signals using the antenna of the monitoring device from within the tire while the power source is activated; and
thenswitching the power source from the active mode to the passive mode.
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Abstract
A method for monitoring various physical conditions of pneumatic tires, and to a tire including a monitoring device. More particularly, the invention relates to a method of monitoring tires which uses an active, self-powered programmable electronic device which is installed in or on the interior surface of a pneumatic tire or on a tire rim. This device can be used for monitoring, storing and telemetering information such as temperature, pressure, tire rotations and/or other operating conditions of a pneumatic tire, along with tire identification information. The device includes a power source which can be placed into an active or a dormant mode using a data band switching circuit. The device can be activated by externally transmitted radio frequency waves or microwaves and in response, the device compares or transmits information and provides a warning in the event a preselected limit is exceeded.
238 Citations
5 Claims
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1. A method of monitoring at least one engineering condition of a tire, comprising the steps of:
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providing the tire with a monitoring device, the monitoring device including a sensor, an amplifier, an antenna, a power source having an active mode and a dormant mode, a circuit for data band switching, and an integrated circuit including data storage; securing the monitoring device within the tire in such a manner and location as to minimize stress, strain, cyclic fatigue, impact and vibration; sensing the engineering condition of the tire; storing the sensed engineering condition of the tire as data in the data storage of the integrated circuit; activating the power source using data band switching; transmitting the stored data in the data storage of the integrated circuit and the current sensed engineering condition of the tire as amplified electronic signals using the antenna of the monitoring device from within the tire while the power source is activated; and
thenswitching the power source from the active mode to the passive mode. - View Dependent Claims (2, 3, 4, 5)
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Specification