Automatic Level Calibration Device Based on Image Recognition

Abstract

The invention discloses a fully automatic level calibration device based on image recognition, which includes a calibration platform and a grating ruler displacement sensor. A precision guide rail arranged horizontally is installed on the calibration platform, and a sliding seat is slidably connected to the precision guide rail. The grating ruler displacement sensor is used to detect the moving distance of the sliding seat. A two-dimensional mobile bracket is installed on the sliding seat, and the first industrial camera for calibrating the indication error of the linear scale is fixed on the two-dimensional mobile bracket; in the first industrial A left support and a right support are fixed on the calibration platform in front of the lens of the camera, an aluminum-magnesium level ruler is placed on the left support and the right support, and the two-dimensional mobile support is fixed on the aluminum-magnesium level ruler. A second industrial camera for calibrating the index indication error is fixed on the two-dimensional mobile bracket, and the lens of the second industrial camera faces the top of the aluminum-magnesium ruler; thereby realizing a high detection accuracy, high calibration efficiency, and A fully automatic level bar calibration device based on image recognition for batch calibration.

Description

technical field [0001] The invention belongs to the technical field of level bar calibration, in particular to a fully automatic level bar calibration device based on image recognition. Background technique [0002] The spirit level is a measuring instrument that uses the principle of liquid level to directly display the angular displacement of the level bubble to measure the relative horizontal position, vertical position, and inclined position deviation of the measured surface. The country has promulgated "JJF1085-2002 Calibration Specifications for Levels" in 2002, and made calibration regulations for the flatness of the working surface of the level, the indication error, zero error and division value error of the linear ruler, etc., to ensure The quality of the level during manufacture and use. [0003] At present, the calibration of each parameter of the spirit level mainly adopts an adjustable plate, a special plane parallel column, a special 45° angle ruler, a specia...

AI Technical Summary

Problems solved by technology

[0003] At present, the calibration of each parameter of the spirit level mainly adopts an adjustable plate, a special plane parallel column, a special 45° angle ruler, a special calibration table, a gauge block, and a dial indicator. Large operating errors, especially inconvenient during batch calibration

The Chinese patent with the publication number 103528597A discloses a level calibration method and its calibration device, which uses an optical dividing head and a fixture as a calibrator, and can complete the calibration of the horizontal position of the level, the water bubble, and the vertical position by one-time clamping. The calibration of the zero position error and the index value error of the water bubble and the 45° position water bubble has a certain progress, but the operation steps are cumbersome, and the accuracy of the optical dividing head and the fixture is not high enough

The Chinese patent with the notification number 205642396U discloses a high-precision level gauge verification device based on the law of sine, which integrates the horizontal position, 90° position, 45° position, linear scale indication value and division value accuracy calibration work into one Completed on a set of equipment, but the operation is cumbersome and has not been automated

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