Device for detecting excessively heated wheel bearings and/or wheel tires
First Claim
1. A system for measuring the temperature of and detecting excessively heated wheel bearings and/or wheel tires of rail vehicles running on a track at a measuring point within a fixed field of vision wherein the system is stationarily arranged in the vicinity of the track and the position of the measuring point varies in a random manner over the length of the bearing along a known axis within a fixed field of vision, comprising:
- heat sensing means for detecting infrared radiation and measuring the temperature of the wheel bearings;
infrared object lens means for scanning infrared radiation emitted from the measuring point and to produce an image thereof;
infrared focusing lens means for focusing scanned infrared radiation onto said heat sensing means; and
afocal anamorphotic cylinder lens means for anamorphotically scanning the image produced by said infrared object lens means and for focusing the image into a beam having a substantially circular symmetrical shape on said infrared focusing lens means, wherein said afocal anamorphotic cylinder lens means widens the image in one axial direction to extend narrowly across an area at least equal to the fixed field of vision within which the position of the measuring point vaires
3 Assignments
0 Petitions
Accused Products
Abstract
In the case of a system for detecting excessively heated wheel bearings and/or wheel tires of rail vehicles, a device is inserted into the path of the beam extending from a measuring point to a heat radiation sensor that distorts the resulting image and, in particular, widens it at least uniaxially. This device also serves to detect the measuring point when wheel axles shift in an axial direction. A system of this type may be formed by using a distorting optical device (6) which permits the imaging of a correspondingly widened field (4).
25 Citations
22 Claims
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1. A system for measuring the temperature of and detecting excessively heated wheel bearings and/or wheel tires of rail vehicles running on a track at a measuring point within a fixed field of vision wherein the system is stationarily arranged in the vicinity of the track and the position of the measuring point varies in a random manner over the length of the bearing along a known axis within a fixed field of vision, comprising:
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heat sensing means for detecting infrared radiation and measuring the temperature of the wheel bearings; infrared object lens means for scanning infrared radiation emitted from the measuring point and to produce an image thereof; infrared focusing lens means for focusing scanned infrared radiation onto said heat sensing means; and afocal anamorphotic cylinder lens means for anamorphotically scanning the image produced by said infrared object lens means and for focusing the image into a beam having a substantially circular symmetrical shape on said infrared focusing lens means, wherein said afocal anamorphotic cylinder lens means widens the image in one axial direction to extend narrowly across an area at least equal to the fixed field of vision within which the position of the measuring point vaires
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2. A system for measuring the temperature of and detecting excessively heated wheel bearings and/or wheel tires of rail vehicles running on a track at a measuring point within a fixed field of vision wherein the system is stationarily arranged in the vicinity of the track and the position of the measuring point varies in a random manner over the length of the bearing along a known axis within a fixed field of vision, comprising:
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heat sensing means for detecting infrared radiation and measuring the temperature of the wheel bearings; first lens means for anamorphotically scanning the fixed field of vision to produce an image and for focusing the image into a beam having a substantially circular symmetrical shape in the direction of said heat sensing means, wherein said first lens widens the image in one axial direction to extend narrowly across an area at least equal to the fixed field of vision within which the position of the measuring point varies; rotating modular disk means disposed between said heat sensisng means and said first lens means for generating a modulated signal to measure ambient temperature, wherein said rotating modular disk means includes radial slots, the width of each of which radial slots is less than the longitudinal axis of the widened image and wherein said rotating modulator disk means has an axis of rotation perpendicular to the axis along which the position of the measuring point varies; object lens means for focusing the beam generated by said first lens means onto the radial slots of said rotating modulator disk means; and second lens means for focusing an infrared component of the beam from said first lens means onto said heat sensing means.
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3. A system for measuring the temperature of and detecting excessively heated wheel bearings and/or wheel tires of rail vehicles running on a track at a measuring point within a fixed field of vision wherein the system is stationarily arranged in the vicinity of the track and the position of the measuring point varies in a random manner over the length of the bearing along a known axis within a fixed field of vision, comprising:
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heat sensing means for detecting infrared radiation and measuring the temperature of the wheel bearings; and cylindrical lens means for anamorphotically scanning the fixed field of vision to produce an image and for focusing the image into a beam having a substantially circular symmetrical shape on said heat sensing means, wherein said cylindrical lens means widens the image in one axial direction to extend narrowly across an area at least equal to the fixed field of vision within which the position of the measuring point varies. - View Dependent Claims (4)
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5. A system for measuring the temperature of and detecting excessively heated wheel bearings and/or wheel tires of rail vehicles running on a track at a measuring point within a fixed field of vision wherein the system is stationarily arranged in the vicinity of the track and the position of the measuring point varies in a random manner over the length of the bearing along a known axis within the fixed field of vision, comprising:
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heat sensing means for detecting infrared radiation and measuring the temperature of the wheel bearings; and lens means for anamorphotically scanning the fixed field of vision to produce an image and for focusing the image into a beam having a substantially circular symmetrical shape on said heat sensing means, wherein said lens means widens the image in one axial direction to extend narrowly across an area at least equal to the fixed field of vision within which the position of the measuring point varies. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification