Design of a CAN bus interface for photoelectric encoder in the spaceflight camera

Ying Sun; Qiu-hua Wan; Rong-hong She; Chang-hai Zhao; Yong Jiang

doi:10.1117/12.830986

21 May 2009 Design of a CAN bus interface for photoelectric encoder in the spaceflight camera

Ying Sun, Qiu-hua Wan, Rong-hong She, Chang-hai Zhao, Yong Jiang

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72822G (2009) https://doi.org/10.1117/12.830986
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

In order to make photoelectric encoder usable in a spaceflight camera which adopts CAN bus as the communication method, CAN bus interface of the photoelectric encoder is designed in this paper. CAN bus interface hardware circuit of photoelectric encoder consists of CAN bus controller SJA 1000, CAN bus transceiver TJA1050 and singlechip. CAN bus interface controlling software program is completed in C language. A ten-meter shield twisted pair line is used as the transmission medium in the spaceflight camera, and speed rate is 600kbps.The experiments show that: the photoelectric encoder with CAN bus interface which has the advantages of more reliability, real-time, transfer rate and transfer distance overcomes communication line's shortcomings of classical photoelectric encoder system. The system works well in automatic measuring and controlling system.

Citation Download Citation

Ying Sun, Qiu-hua Wan, Rong-hong She, Chang-hai Zhao, and Yong Jiang "Design of a CAN bus interface for photoelectric encoder in the spaceflight camera", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72822G (21 May 2009); https://doi.org/10.1117/12.830986

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