High speed image acquisition system of absolute encoder

Jianxiang Liao; Xin Chen; Xindu Chen; Fangjian Zhang; Han Wang

doi:10.1117/12.2265226

23 January 2017 High speed image acquisition system of absolute encoder

Jianxiang Liao, Xin Chen, Xindu Chen, Fangjian Zhang, Han Wang

Proceedings Volume 10322, Seventh International Conference on Electronics and Information Engineering; 103221C (2017) https://doi.org/10.1117/12.2265226
Event: Seventh International Conference on Electronics and Information Engineering, 2016, Nanjing, China

Abstract

Absolute optical encoder as a product of optical, mechanical and electronic integration has been widely used in displacement measuring fields. However, how to improve the measurement velocity and reduce the manufacturing cost of absolute optical encoder is the key problem to be solved. To improve the measurement speed, a novel absolute optical encoder image acquisition system is proposed. The proposed acquisition system includes a linear CCD sensor is applied for capturing coding pattern images, an optical magnifying system is used for enlarging the grating stripes, an analog-digital conversion(ADC) module is used for processing the CCD analogy signal, a field programmable gate array(FPGA) device and other peripherals perform driving task. An absolute position measurement experiment was set up to verify and evaluate the proposed image acquisition system. The experimental result indicates that the proposed absolute optical encoder image acquisition system has the image acquisition speed of more than 9500fp/s with well reliability and lower manufacture cost.

Citation Download Citation

Jianxiang Liao, Xin Chen, Xindu Chen, Fangjian Zhang, and Han Wang "High speed image acquisition system of absolute encoder", Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 103221C (23 January 2017); https://doi.org/10.1117/12.2265226

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