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

A laser sensor and error measurement technology, applied in measurement devices, instruments, optical devices, etc., can solve the problems affecting measurement accuracy and errors, and achieve the effects of various measurement modes, improving accuracy and reducing friction.

Active Publication Date: 2021-10-01
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 angle error measurement compensation method and system based on cylindrical angle square
  • Laser sensor inclination angle error measurement compensation method and system based on cylindrical angle square
  • Laser sensor inclination angle error measurement compensation method and system based on cylindrical angle 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 laser sensor inclination angle error measurement compensation method and system based on a cylindrical angle square, and the method comprises the steps: driving a measuring head of a laser sensor to obtain a group of light knife data, finding the minimum value of the measurement data of a left end point and a right end point in scanning data, and determining the deflection angle error of the measuring head of the laser sensor; when the measuring head pose of the laser sensor has a pitch angle error, the shape of the corresponding group of data being an ellipse; using a least square method to calculate a pitch angle error which enables the objective function to be minimum and serves as a laser sensor measuring head; and determining an error compensation mathematical model according to the deflection angle error and the pitch angle error to calculate the influence of the inclination angle error, and adding and subtracting a corresponding error value on the basis of the measured original data as compensation revised data to realize error measurement compensation. The attitude error compensation of the laser line scanning sensor is realized, and the precision of measured data is improved.

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...

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Application Information

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Patent Type & Authority Applications(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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