Laser sensor inclination error measurement and compensation method and system based on cylindrical square

A laser sensor, error measurement technology, applied in measurement devices, instruments, optical devices, etc., can solve problems such as errors and affect measurement accuracy, and achieve the effects of improving accuracy, diverse measurement modes, and fast processing speed

Active Publication Date: 2022-04-22
XI AN JIAOTONG UNIV
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Problems solved by technology

This pose error will lead to large errors in the subsequent measurement process of the instructor, especially when the requirements for the workpiece surface are high, which will seriously affect the measurement accuracy

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  • Laser sensor inclination error measurement and compensation method and system based on cylindrical square
  • Laser sensor inclination error measurement and compensation method and system based on cylindrical square
  • Laser sensor inclination error measurement and compensation method and system based on cylindrical square

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", "end", "side" etc. is based on the Orientation or positional relationship is only for the convenience of describing the present invention and simplif...

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Abstract

The invention discloses a method and system for measuring and compensating the inclination error of a laser sensor based on a cylindrical square, which drives the measuring head of the laser sensor to obtain a set of light knife data, finds the minimum value of the measurement data of the left and right ends in the scanning data, and determines the measurement value of the laser sensor. The yaw angle error of the head; when there is an error in the pitch angle of the probe head of the laser sensor, the shape of the corresponding group of data is an ellipse; the least square method is used to calculate the minimum objective function as the pitch angle error of the laser sensor probe; according to Yaw angle error and pitch angle error determine the mathematical model of error compensation to calculate the influence of inclination error, and realize error measurement compensation by adding and subtracting the corresponding error value on the basis of the original measured data as the compensated revised data. The invention realizes the compensation of the attitude error of the laser line scanning sensor and improves the accuracy of the measurement data.

Description

technical field [0001] The invention belongs to the technical field of sensor attitude error measurement, and in particular relates to a method and system for measuring and compensating an inclination error of a laser sensor based on a cylindrical square. Background technique [0002] At this stage, the main detection methods in the industrial field are mainly divided into contact measurement and non-contact measurement, and the methods involve electronic information, optics, electricity, acoustics and many other fields. Contact measurement uses trigger or inductive displacement sensors to obtain workpiece information, with mature technology and high measurement accuracy. However, due to the working principle of the measuring head, the measurement efficiency is low, the radius of the measuring head needs to be compensated, the cost is high and the source code is not open, the secondary development is difficult, and it is impossible to customize and develop new functions acco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02G01B11/24
CPCG01B11/02G01B11/24G01B21/045
Inventor 李兵辛美婷魏翔李磊
Owner XI AN JIAOTONG UNIV
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