Method and apparatus for non-contact measuring of the deflection of roads or rails
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United States of America Patent
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Sep 19, 2000
Grant Date -
N/A
app pub date -
Sep 19, 1997
filing date -
Apr 3, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
Equipment for non-contact measurement of the deflection of a road (2) comprises a self-propelled vehicle with a load (7) which influences at least one wheel (4), the speed of which is measured in the direction of travel. The equipment further comprises a laser device (8) from which at least one electromagnetic beam (9) is directed towards the rodway in the vicinity of the vehicle, and the Doppler frequency change in the reflection (9) is detected. An electronic circuit (10) continuously registers the results of the measurements and herewith the deflection at normal traveling speed.
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