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Proceedings Paper

Design of acid-lead battery stage-of-charge detection system based on refractive index detection technology
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Paper Abstract

Based on optical total reflection critical Angle method, we have designed a refractive index measurement system. It adopted a divergent light source and a CCD camera as the occurrence and receiver of the signal. The divergent light source sent out a bunch of tapered beam, exposure to the interface of optical medium and sulfuric acid solution. Light intensity reflected from the interface could be detected by the CCD camera and then sent to the embedded system. In the DSP embedded system, we could obtain the critical edge position through the light intensity distribution curve and converted it to critical angle. Through experiment, we concluded the relation between liquid refractive index and the critical angle edge position. In this system, the detecting precision of the refractive index of sulfuric acid solution reached 10-4. Finally, through the conversion of the refractive index and density, we achieved high accuracy online measurement of electrolyte density in lead-acid battery.

Paper Details

Date Published: 15 October 2015
PDF: 5 pages
Proc. SPIE 9674, AOPC 2015: Optical and Optoelectronic Sensing and Imaging Technology, 967429 (15 October 2015); doi: 10.1117/12.2199904
Show Author Affiliations
Junyao Chen, Huazhong Univ. of Science and Technology (China)
Kecheng Yang, Huazhong Univ. of Science and Technology (China)
Min Xia, Huazhong Univ. of Science and Technology (China)
Lei Li, Huazhong Univ. of Science and Technology (China)
Xianjiang Zeng, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9674:
AOPC 2015: Optical and Optoelectronic Sensing and Imaging Technology
Haimei Gong; Nanjian Wu; Yang Ni; Weibiao Chen; Jin Lu, Editor(s)

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