A method and device for detecting geometrical parameters of overhead lines under a low-speed state
A technology of geometric parameters and detection methods, applied in measuring devices, optical devices, image data processing, etc., can solve problems such as lost contact lines, blurred pictures, false alarms, etc., to reduce false alarms, improve accuracy, and detection efficiency high effect
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Embodiment 1
[0053] Combining the above-mentioned inventive idea of the technical solution of the present invention, a detection method of the geometric parameters of the catenary under the low-speed state, such as figure 1 shown, including the following steps:
[0054] Step S1: Obtain one-dimensional catenary images with lenses located on both sides of the track length direction.
[0055] like Figure 8As shown, in a specific situation, a high-speed linear CCD camera can be set on a trolley sliding on the track, and the positions of the two cameras are respectively set above the two rails, and they shoot toward the top of the rails to form a shooting light curtain , There is also a linear laser light source next to the camera, the irradiation area of the linear laser light source coincides with the shooting area of the camera, and the laser light source can make the image captured by the camera clearer.
[0056] like figure 2 As shown, step S1 further includes step S11 and step ...
Embodiment 2
[0082] In combination with the above-mentioned inventive idea of the technical solution of the present invention, a detection device for the geometric parameters of the catenary in a low-speed state, such as Figure 5 shown, including:
[0083] An image acquisition module 100, configured to acquire one-dimensional catenary images located on both sides of the track length direction as lenses;
[0084] like Figure 6 As shown, the image acquisition module 100 also includes:
[0085] Obtaining an offset unit 110, configured to acquire an offset image acquired by a lens close to the fixed rod where the contact line is located;
[0086] The search unit 120 is configured to perform grayscale processing on the offset image to generate an offset grayscale image, search upward from the bottom of the fixed rod to the top of the fixed rod in the offset grayscale image, and select the coordinates and gray value of the top As the reference value of contact line coordinates and gray va...
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