초록 ▼

A tire condition monitoring system includes a monitoring device securely positioned within a tire and in electronic communication with a receiver and a cab mounted visual display. In one embodiment, the monitoring device includes a battery, an inductive pick-up coil, pressure and/or temperature sens

A tire condition monitoring system includes a monitoring device securely positioned within a tire and in electronic communication with a receiver and a cab mounted visual display. In one embodiment, the monitoring device includes a battery, an inductive pick-up coil, pressure and/or temperature sensors, a microprocessor, and a data transmitter. Each monitoring device has a unique multi-bit identification code. The monitoring device is shipped in an energy conserving dormant state until activated either by pressurization of the tire or by use of a portable hand-held wand transmitter. The hand-held transmitter assigns the monitoring device a relative tire position. After activation, the monitoring device periodically senses tire condition. This information is stored and compared to preset parameters and the last stored tire condition information. The tire information is periodically sent to the receiver and visually displayed. If the sensed tire condition information deviates from preset parameters, the sensed tire information is immediately telemetered to the receiver and an alarm is activated. During prolonged periods of vehicle and tire inactivity, the monitoring device measures and transmits less frequently to preserve power. The monitoring device automatically reactivates upon vehicle reactivity. In another embodiment, a monitoring device having a mechanical air pressure sensor, a motion detector, a battery and a transmitter is positioned within the tire. Once the tire is traveling at a predetermined velocity, power is supplied to the mechanical air pressure sensor. When the tire pressure drops below a predetermined level, the mechanical air pressure sensor provides power to the transmitter which generates a signal to a receiver and cab mounted alarm.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for monitoring a vehicle tire condition, comprising the steps of:positioning a tire condition monitoring device having a unique identification code within a pneumatic tire;activating the monitoring device from a dormant state to an operational state and assign

[ What is claimed is:] [1.]1. A process for monitoring a vehicle tire condition, comprising the steps of:positioning a tire condition monitoring device having a unique identification code within a pneumatic tire;activating the monitoring device from a dormant state to an operational state and assigning a tire location to the monitoring device utilizing a hand-held transmitter to remotely activate and assign a tire location to the monitoring unit by actuating at least one switch of a keypad on the hand-held transmitter which corresponds to a particular tire position and subsequently transmitting a signal to the monitoring device;periodically sensing a condition within the tire;electronically storing sensed tire condition information;comparing the sensed tire condition information with preset parameters; andperiodically telemetering the sensed tire condition information and the monitoring device identification code to a receiver.