A visual absolute rotation angle measurement method and device

A technology of rotation angle and measurement method, applied in the direction of measuring device, optical device, image analysis, etc., to achieve continuous measurement capability, reduce manufacturing process complexity, and low processing and installation accuracy
CN112361995BActive Publication Date: 2022-06-24SICHUAN WINDOM PHOTOELECTRIC TECH
12 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN WINDOM PHOTOELECTRIC TECH
Publication Date
2022-06-24

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a visual absolute rotation angle measurement method and device, the device includes a CCD camera and a ring-shaped code disc, the middle part of the code disc is rotated by connecting a rotating shaft; the circular ring of the code disc is uniform There are n co-circular gray marks distributed, and the gray value of each gray mark corresponds to the n-level gray value set at uniform intervals in the gray value range of 0‑255 respectively; the CCD camera is arranged on the code disc Above, make its shooting field of view align with the gray mark, and at any time there is at least one complete gray mark in its shooting field of view. The measuring device of the present invention has absolute positioning capability and at the same time has extremely small rotation angle measurement resolution.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of angle measurement, in particular to a visual absolute rotation angle measurement method and device. Background technique

[0002] The precise measurement of the moving distance of the plane is a common general requirement, which is often used in the closed-loop servo system of CNC machine tools, and can be used for the detection of linear displacement or angular displacement. At present, grating scale measurement is mainly used in the industrial field, which is also called grating scale displacement sensor or grating scale sensor, which is a measurement feedback device that works by using the optical principle of grating.

[0003] There are two main materials for making gratings:

[0004] 1. Glass ruler with engraved line (effective measurement length below 3 meters)

[0005] 2. Steel tape ruler for engraving

[0006] In special working conditions with vibration, shock, and high reliability requirement...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More