Arrangement for measuring the tire pressure of moving vehicles from the tire contact surface
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United States of America Patent
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Aug 24, 1999
Grant Date -
N/A
app pub date -
Jul 15, 1998
filing date -
Jul 16, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The detector arrangement comprises a measuring rail with a number of individual elements each having a sensor mounted on a bottom rail and include rectangular elements as force introduction flanges, whose length in the direction of travel is a multiple of their width in the axial direction of the rail. The measuring rail is part of a measuring arrangement for detecting the tire pressures of vehicles in motion. The arrangement includes also at least one contact rail placed ahead of the measuring rail in the direction of travel, and a data acquisition facility. The vehicle speed is determined with the help of the contact rail. The measured values from the sensors yield a tire contact surface with an isobar pattern. From these two, the data acquisition can determine underinflation, normal pressure and overinflation of the individual wheels besides axle loads and vehicle weights, whereby underinflation and overinflation at least are displayed as faults.
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