Photoelectric measurement method for distance from railway gauge to platform
A measurement method, rail technology, applied in the field of precision measurement, to achieve high-precision measurement and promote the effect of wide application
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[0018] like figure 1 As shown, the camera 6 looks down on the rail, and two lasers are distributed on both sides of the camera 6 to look down on the rail 9, forming the sensing and measuring instrument. The measuring instrument and the platform 1 are fixed by the mechanical bayonet 3, and the contact point between the mechanical bayonet 3 of the instrument and the platform 1 is fixed relative to the optical center of the camera. During the measurement, it is necessary to meet the working range of the laser and the camera 6 and the premise requirements for measuring the depth of field, and ensure that the two laser planes intersect the rail 9, which is easy to achieve in actual measurement.
[0019] figure 2 Shown is a perspective model of a line structured light vision sensor. As shown in the figure, camera 3D vision measurement models are usually based on pinhole models. The world coordinate system is consistent with the sensor light plane coordinate system, set to O w -...
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