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Design of Laser Scanning Optical System based on the Triangle Principle
Cao Miao,Wang Xiao,Yan Juncen,Shen Yingchun 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.3
In a three-dimensional laser scanning system, the measurement accuracy of the entire system is determined by the optical system. To improve the accuracy, this paper designs a three-dimensional laser scanning optical system. In order to improve the performance of scanning, to reduce the influence of stray light and the imaging geometric distortion is required, as far as possible to improve the distribution uniformity of the image illumination. In this paper, the semiconductor laser is chosen as the light source which is suitable for laser triangulation measurement. This system ensures accuracy in the first place, and obtain larger working distance later. The volume of the measuring system is reduced by introducing layout that the beam splitter and the normal are coaxial. The Scheimpflug conditions are deduced under this structure, and the experimental results of the laser triangulation optical system are analyzed finally.
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Yanli Liu,Yan Xia,Pan Guo,Guiping Wang,Zhenguo Shen,Yingchun Xu,Yahua Chen 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.4
The effects of environmental factors on the paeonol accumulation in cortex moutan of herbal Paeonia suffruticosa cv. Fengdan were investigated. Cortex moutan of ‘Fengdan’ and the corresponding soil samples were collected from Tongling (Anhui Province, China). A pot experiment was also conducted to investigate the responses of plant growth and paeonol concentrations to copper (Cu) supply. The paeonol and Cu concentrations in cortex moutan samples, the basic soil properties and soil’s bacterial diversity were analyzed. The results showed that moderate levels of Cu in the soil enhanced the paeonol concentration in the cortex moutan. Moreover, the paeonol concentration was related significantly to soil bacterial diversity. The results of the pot experiment showed that increasing Cu supply from 63 to 263 mg·kg-1 did not produce any significant effect on the dry weight of ‘Fengdan’ cortex moutan,duramen, and total plant. Increasing Cu supply significantly increased the concentrations of paeonol in cortex moutan and duramen; but at 263 mg·kg-1 Cu there was a slight decline in their concentrations than those obtained at 156mg·kg-1 Cu. In all treatments, the concentrations of paeonol were much higher in the cortex moutan than those in the duramen. Due to its ecological benefits, ‘Fengdan’ can be planted in soil contaminated with moderate Cu.
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