Non-contact wire diameter measuring device and method

Abstract

The invention discloses a non-contact wire diameter measuring device. The non-contact wire diameter measuring device comprises a binocular stereoscopic vision depth camera, a central processing unit,a display and a power supply, wherein the power supply is used for supplying power; the binocular stereoscopic vision depth camera is used for acquiring a visible light image and depth information data of a cable to be tested, and transmitting the visible light image and the depth information data to the central processing unit; and the central processing unit is used for processing the visible light image and a depth map, and transmitting a processing result to the display for displaying. The invention also discloses a non-contact wire diameter measuring method. The method comprises the following steps: acquiring a visible light image and a depth map of a cable to be tested; processing visible light image data, and extracting the edge of the cable; performing segmentation on the image byn times to obtain n pairs of coordinate points P, and aligning the visible light image with the depth map to obtain the depth values of the coordinate pairs in P, wherein n is greater than 1; and calculating the spatial distance between each pair of coordinate points in the n pairs of coordinate points, and averaging to obtain the finally-measured cable wire diameter. The technical scheme is low in cost, easy to operate, and high in measuring accuracy.

Description

Technical field [0001] The invention belongs to the technical field of measurement, and particularly relates to a non-contact wire diameter measuring device and method. Background technique [0002] There are currently two methods for measuring the diameter of high-voltage cables, one is direct tool contact measurement, and the other is non-contact measurement using a laser rangefinder. [0003] Among them, the use of tools to measure the contact wire diameter of high-voltage cables has certain requirements for operators, and requires a high-voltage special operation operation certificate, which poses certain safety hazards; the existing non-contact wire diameter measuring instruments are complicated, and the laser rangefinder The price is expensive, and the measurement accuracy only depends on the accuracy of the laser ranging sensor and the imaging quality of the visible light image; there are certain requirements for the measurement angle and position during measurement, and the...

AI Technical Summary

Problems solved by technology

[0003] Among them, the use of tools for contact-type wire diameter measurement of high-voltage cables has certain requirements for operators, who need to have high-voltage special operation certificates, and there are certain potential safety hazards; the existing non-contact wire diameter measurement instruments are complex, and the laser distance meter The price is expensive, and the measurement accuracy only depends on the accuracy of the laser ranging sensor and the imaging quality of the visible light image; there are certain requirements for the measurement angle and position during measurement, and the operability and practicability need to be improved

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