Remote sensing of vehicle tire pressure

Measuring and testing – Tire – tread or roadway – Tire inflation testing installation

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G01M 1702

Patent

active

046304703

ABSTRACT:
Apparatus and a method for determining the tire pressures of vehicles as y pass an instrumented checkpoint on a roadway. Rigid corrugations on the roadway set the tires into vibration with a waveform which is a function of tire pressure. The complex waveforms from each tire of a given vehicle are subjected to a spectral analysis and the results of such analyses are compared to each other to determine which, if any, of said tires have produced a spectrum different from the normal spectra produced by the other tires. This invention requires no apparatus mounted on the vehicles being checked.

REFERENCES:
patent: 1849730 (1932-03-01), Morse
patent: 3001394 (1961-09-01), Nelson
patent: 4355299 (1982-10-01), Cook

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