Arrangement for measuring the tire pressure of moving vehicles from the tire contact surface
First Claim
1. A sensor arrangement for installing in roadways to detect the tire pressures of the wheels of a vehicle during normal travel, comprising a measuring rail having individual elements with sensors disposed in a line transverse to the direction of travel, each having a force introducing flange and an opposed force sustaining flange, a contact rail positioned ahead of the measuring rail in the direction of travel and a data acquisition facility connected to the measuring and the contact rails, the individual elements being rectangular and whose length in the direction of travel is a multiple of their width, the data acquisition facility determines the vehicle velocity and the pressure load of each wheel from the measuring and contact rails to detect the tire pressure.
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Accused Products
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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Citations
8 Claims
- 1. A sensor arrangement for installing in roadways to detect the tire pressures of the wheels of a vehicle during normal travel, comprising a measuring rail having individual elements with sensors disposed in a line transverse to the direction of travel, each having a force introducing flange and an opposed force sustaining flange, a contact rail positioned ahead of the measuring rail in the direction of travel and a data acquisition facility connected to the measuring and the contact rails, the individual elements being rectangular and whose length in the direction of travel is a multiple of their width, the data acquisition facility determines the vehicle velocity and the pressure load of each wheel from the measuring and contact rails to detect the tire pressure.
Specification