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

Inactive Publication Date: 2011-06-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no corresponding measurement method for railway traffic, the distance between the center of the large outdoor gauge and the side of the platform

Method used

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  • Photoelectric measurement method for distance from railway gauge to platform
  • Photoelectric measurement method for distance from railway gauge to platform
  • Photoelectric measurement method for distance from railway gauge to platform

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Experimental program
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Embodiment Construction

[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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Abstract

The invention relates to a photoelectric measurement method for a distance from a railway gauge to a platform and relates to a method for measuring the distance between the center of the railway gauge and a side of the platform based on a double-linear structured light visual sensor. Based on the principle of the linear structured light visual sensor, the method realizes the measurement of the distance from the center of the railway gauge to the side of the platform by adopting double-linear structured light, realizes the measurement of the distance from the center of an air gauge to the sideof the platform and non-contact, portable, movable and high-accuracy measurement by designing a double-linear structured light sensor and further improves the wide application of visual measurement technology.

Description

technical field [0001] The invention belongs to a precision measurement method, in particular to a measurement method for measuring the distance between the center of the track gauge and the side of a platform based on a two-line structured light vision sensor. Background technique [0002] In applications requiring precision measurement such as railway surveying, it is necessary to measure the geometric parameters of the distance between the center of the gauge and the side of the platform, so as to ensure that the train, rail, platform, etc. are within a safe range, and ensure the safe operation of the railway department. Provide necessary data for the railway sector to maintain. [0003] The traditional measurement of the distance between the gauge center and the side of the platform mainly uses a special platform measuring ruler based on a mechanical structure, which is bulky in size, complicated to use, low in measurement efficiency, high in labor intensity, and difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/14
Inventor 王顺张益昕张旭苹徐静珠李建华
Owner NANJING UNIV
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