21-bit absolute photoelectric encoder

Liming Geng; Guohua Cao; Chunmin Shang; Hongchang Ding

doi:10.1117/12.3033880

5 July 2024 21-bit absolute photoelectric encoder

Liming Geng, Guohua Cao, Chunmin Shang, Hongchang Ding

Proceedings Volume 13183, International Conference on Optoelectronic Information and Functional Materials (OIFM 2024); 1318323 (2024) https://doi.org/10.1117/12.3033880
Event: The 3rd International Conference on Optoelectronic Information and Functional Materials (OIFM 2024), 2024, Wuhan, China

Abstract

To solve the contradiction between miniaturization of photoelectric encoders and high-precision measurement, a matrix coding and decoding method based on 16 quadrants is proposed in this paper. 21-bit matrix coding can be realized by engraving two circles of matrix code tracks, compared with traditional optoelectronic encoders, this encoder achieves higher accuracy with fewer code circles. In this paper, the design of a new-type matrix code disk, the design of coding and decoding methods and simulation analysis are mainly carried out. Theoretical calculation and simulation analysis show that the encoder designed is feasible, and this paper proposes a new method for the miniaturization and high-precision measurement of encoder.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Liming Geng, Guohua Cao, Chunmin Shang, and Hongchang Ding "21-bit absolute photoelectric encoder", Proc. SPIE 13183, International Conference on Optoelectronic Information and Functional Materials (OIFM 2024), 1318323 (5 July 2024); https://doi.org/10.1117/12.3033880

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KEYWORDS

Matrices

Sensors

Signal detection

Design

Miniaturization

Phototransistors

CCD image sensors

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