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A ruler-type level meter based on grating diffraction and a method for measuring the inclination angle of an inclined plane

A technology of grating diffraction and level meter, which is applied in the field of level meter, can solve problems such as low precision, poor stability, failure, etc., and achieve the effect of strong practicability, good stability and high precision

Active Publication Date: 2021-03-23
湖南晨达工程咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accuracy of the bubble level is not high, and the stability is poor
The accuracy of the electronic level has been improved, but it has higher requirements on the working environment. Under extreme temperature and harsh environment, the accuracy will be greatly reduced or even fail.

Method used

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  • A ruler-type level meter based on grating diffraction and a method for measuring the inclination angle of an inclined plane
  • A ruler-type level meter based on grating diffraction and a method for measuring the inclination angle of an inclined plane
  • A ruler-type level meter based on grating diffraction and a method for measuring the inclination angle of an inclined plane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for measuring the inclination angle of an inclined plane, using the above-mentioned ruler level based on grating diffraction, comprising the following steps:

[0031] S1. Put the ruler-type level on the horizontal plane, turn on the parallel light source, turn the vernier turntable, and observe from the telescope. When the k-th order diffracted light energy horizontally exits to the central reticle in the field of view of the telescope, stop turning and read the vernier turntable. Initial reading α 1 ;

[0032] S2. Put the ruler level at the inclination angle θ 2 On the plane to be measured, due to the effect of gravity, the falling body together with the soft thin line and the incident light produce θ 1 deflection, and θ 1 = θ 2 ;

[0033] S3. Rotate the vernier turntable and observe the telescope at the same time, so that the k-th order diffracted light returns to the central reticle in the field of view of the telescope again, and read the reading α of ...

Embodiment 2

[0042] A method for measuring the inclination angle of an inclined plane, using the above-mentioned ruler level based on grating diffraction, comprising the following steps:

[0043] S1. Put the ruler-type level on the horizontal plane, turn on the parallel light source, turn the vernier turntable, and observe from the telescope. When the k-th order diffracted light energy horizontally exits to the central reticle in the field of view of the telescope, stop rotating and read the distance between the vernier turntable. Initial reading of the two verniers at 180 degrees α 1 and α' 1 ;

[0044] S2. Put the ruler level at the inclination angle θ 2 On the plane to be measured, due to the effect of gravity, the falling body together with the soft thin line and the incident light produce θ 1 deflection, and θ 1 = θ 2 ;

[0045] S3. Rotate the vernier turntable and observe the telescope at the same time, so that the k-th order diffracted light returns to the central reticle in t...

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Abstract

The invention discloses a ruler type level gauge based on optical grating diffraction and a method for measuring an inclined angle of a slope. The ruler type level gauge comprises a box, wherein an optical grating spindle is arranged in the box; an optical grating is fixed on the optical grating spindle; one end of the optical grating spindle penetrates through the box and is connected with a cursor turntable; a soft fine line is fixed on the optical grating; the lower end of the soft fine line is connected with a falling component; a parallel light source is arranged on the soft fine line; the light emitted from the parallel light source is pointed to the optical grating; a telescope inserted into the box is arranged on the box; and the telescope is used for observing the diffraction light of the optical grating. The ruler type level gauge based on the optical grating diffraction provided by the invention converts a tiny inclined angle into the deflection angle of the incident light by adopting a method of controlling optical grating diffraction direction by optical grating deflection, so as to realize the amplifying measurement for the tiny inclined angle. Compared with the traditional air bubble type level gauge and electronic type level gauge, the ruler type level gauge based on the optical grating diffraction has the advantages of higher stability, higher precision and higher practicability.

Description

technical field [0001] The invention belongs to the technical field of spirit levels, and in particular relates to a ruler-type spirit level based on grating diffraction and a method for measuring the inclination angle of an inclined plane. Background technique [0002] The spirit level is a micro-angle measuring tool widely used in construction, machinery and instrument manufacturing industries. It can be used to measure the straightness of the guide rails of machine tool equipment, the horizontal position of equipment installation, and whether there is uneven settlement of houses. At present, there are mainly two types of spirit levels commonly used: bubble spirit levels and electronic spirit levels. Bubble levels have low precision and poor stability. The accuracy of the electronic level has been improved, but it has higher requirements on the working environment. Under extreme temperature and harsh environment, the accuracy will be greatly reduced or even malfunction. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C9/00
CPCG01C9/00
Inventor 秦鹏程常相辉樊代和刘其军魏云贾欣燕牟茁宋世军孟赟周昊邓文浩
Owner 湖南晨达工程咨询有限公司