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Plant for track-based detection of the wheel profile of train wheels
| Details |
Inventors: Danneskiold-Samsoe, Ulrik; Gramtorp, Johan; Torben Madsen, Anders-Haure; Anders Haure, Torben-Madsen;
Assignee: Caltronis A/S (Kobenhavn, DK)
Primary Examiner: Hellner; Mark
Assistant Examiner:
Attorney, Agent or Firm: Antonelli, Terry, Stout & Kraus
An apparatus or system for a track-based detection of a wheel profile of passing train wheels, with the apparatus including an illumination unit with a light source and optical elements which transmit light towards a profile of the train wheels. An illumination area of the wheel profile is scanned with a scanning unit and a position of the wheel relative to the rail is scanned with a measuring unit. A data processing unit processes the data from the scanning unit relating to a condition of the wheel and a further unit is provided for transmitting the data concerning the condition of the wheels to at least a central processing unit. |
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DETAILED DESCRIPTION The aim underlying the present invention resides in providing an apparatus for the track-based detection of the wheel profile on train wheels which functions in a fully automatic manner while running at normal operational speeds.
The apparatus as capable of functioning without knowledge of the speed of the wheel, and is capable of detecting the wheel profile on heavily loaded carriages during completely normal operating conditions.
In accordance with advantageous features of the present invention, an apparatus for a track-based detection of a wheel profile of train wheels is provided with the apparatus including an optical unit having an illumination device comprising a light source arranged for transmitting structured light towards a profile surface of the wheel, with the illumination device being triggered by an actual position of the wheel.
A scanning unit is provided which includes means for scanning reflected light from the profile surface of the wheel with a means also being provided for transferring the scanned signals to a data processing unit.
A further unit measures or calculates the actual position of the wheel in a transverse direction, and means are provided for transferring data from the further unit to the data processing unit.
The data processing unit at least processes, converts and corrects and, possibly, stores measured and calculated data and also supplies or is supplied with information concerning an optical axes of the illumination unit and the scanning unit.
By virtue of the above-noted features of the present invention, the apparatus, as a unit, may be placed at the rail element and can measure the wheel profile of all wheels on the train when it passes the detection apparatus.
Each time the illumination unit is triggered by a passing wheel, structured light is transmitted towards the wheel, e.
g.
from a flash light arrangement with suitable optical elements, so that a desired pattern, e.
g.
a line or grid pattern, is projected in on the profile surface of the wheel at an inclined angle from the apparatus, and the picture formed at the profile surface is scanned with a scanning unit, e
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Navigation and GPS 
