Steel ruler calibration and measurement method, system and device and storage medium

Abstract

The invention discloses a steel ruler calibration and measurement method, system and device and a storage medium. The method comprises the steps: placing a measured steel ruler on an adjustable measurement table according to a preset rule; obtaining scale line images and carrying out image processing and obtaining standard ruler scales and measured steel ruler scales through recognition; obtaininga calibration position according to the standard ruler scales and the measured steel ruler scales; and reading the error of the target position of the measured scale line according to the calibrationposition to obtain the error data of the measured steel ruler. The system comprises a placement module, an image module, a calibration comparison module and an error module. The device comprises a memory and a processor used for executing the steel ruler calibration and measurement method. By using the method and the device, errors caused by manual operation can be avoided, so that a calibrationresult is more objective and accurate. The steel ruler calibration and measurement method, system and device and the storage medium can be widely applied to the field of calibration.

Description

Technical field[0001]The invention relates to the field of calibration, in particular to a method, system, device and storage medium for calibration and measurement of a steel ruler.Background technique[0002]The principle of measuring the indication error of the steel ruler is to compare the indication value of the engraved line of the steel ruler measurement point with the standard value, and the physical difference obtained is the indication error of the measuring point. In the field of measurement, most of our country The metrological verification department still uses the third-class metal standard line pattern device to measure the indication error of the steel ruler. This measurement method belongs to the mechanical comparison measurement method. The measurement method is visual observation through the magnifying glass on the standard device. For reading errors, the measuring device and method are affected by factors such as the operator and the verification environment. The m...

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Problems solved by technology

[0002] The principle of the measurement of the indication error of the steel ruler is to compare the indication value of the marking line at the measurement point of the steel ruler with the standard value, and the obtained physical difference is the indication error of the measurement point. In the field of metrology, most of the The metrology and verification department still uses the third-class metal standard line device to measure the indication error of the steel ruler. This measurement method belongs to the mechanical comparison measurement method. The measurement device and method are affected by factors such as the operator and the verification environment, the measurement efficiency is low, and the accuracy is poor, which is not conducive to the geometric quantity measurement in production and life. The requirements for the accuracy of the steel ruler marking line

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