| 摘要 |
A tire pressure management system for a tractor/trailer system establishes allowable bounds for tire pressure compensated for temperature and determines leaks after determining that internal tire temperature measurements are not available. The system is based on valve-mounted external tire pressure sensors, wireless connections to uplink tire pressure data, keyed by location, an ambient temperature sensor and an onboard computer. Tires are assumed pressurized to a target pressure at a given temperature with minimum and maximum pressure bounds set around the target pressure. Ambient temperature sensing, and determination that tires are likely to be at ambient temperature, allows adjustment of the minimum and maximum bounds, as well as the target pressure, compensated for temperature and thus a judgement made as to whether the cold pressure reading indicates deviation from acceptable limits. Determination of whether the vehicle is, or has recently been in movement, is made allowing internal temperature of the tires to be estimated based on changes in pressure. Inter-comparison of pressure readings from among the tires is used to determine the occurrence of leaks during vehicle operation.
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