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根据CCD交汇测量原理和实际设计需要,综合分析了交汇测量中一些关键技术与问题,并对采集测 量系统进行了理论分析和实验研究,对于测量运动物体瞬时位置有重要意义。 相似文献
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本研究是针对体育田径比赛（如中、短跑）终点卡表计时存在的不足而提出来的．结合光学图像处理等技术，对终点计时方式进行一次新的尝试．研究一种以声学识别、图像判别等为核心群的系统：该系统不仅瞬时计时准确，数据处理快，而且与计算机网络链接，实现数据共享． 相似文献
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A newly isolated strain EL31410, producing elastase (E. C3. 4. 4. 7) with high elastolytic activity was identified asBacillus sp. In the medium optimization, it was found that wheat bran and soybean flour hydrosate were the best crude carbon and nitrogen
source for enzyme production, respectively. Addition of corn steep flour can affect the bacterium growth and elastase production.
A fractional factorial design was applied to study the main factors that affect the enzyme production, and central composite
experimental design and response surface methodology were adopted to derive a statistical model for the effect of wheat bran
and soybean flour hydrosate on elastase production. The experimental results showed that wheat bran had positive effect but
soybean flour hydrosate had negative effect, on enzyme production. An initial concentration of 3.4% (w/v) wheat bran and 9.4%
(v/v) soybean flour hydrosate were found to be optimal for enzyme production in batch culture. The time course of elastase
production in the optimized medium composition was also described.
Project (No. 300024) supported by the Zhejiang Provincial Natural Science Foundation of China 相似文献
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CCD和其透镜作为逆付里叶变换系统,输入面为两个狭缝,改变正、负付里叶变换透镜的距离,自动比较CCD上两个波峰的间隔变化来控制CCD移动定焦。用付里叶变换原理和几何光学成像原理进行理论分析,并进行了实验研究和误差分析,这种方法有较高的定位精度。 相似文献
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采用CCD作为光电探测器改进传统阿贝折射仪,进行液体折射率的自动测量,其关键是对CCD采集到的图像信号进行边缘检测,提出应用Canny算子对数字化图像进行处理,以获得亚像素分辨率边缘位置数据的数值算法。该算法能较好地抑制噪声干扰并有较高的边缘定位精度。 相似文献
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LIU Dong WANG Fei HUANG Qun-xing YAN Jian-hua CHI Yong CEN Ke-fa 《浙江大学学报(A卷英文版)》2007,8(11):1853-1857
Radiative imaging of combustion flame in furnace of power plant plays an increasingly important role in combustion diagnosis. This paper presents a new method for calculating the radiative imaging of three-dimensional (3D) combustion flame based on Monte Carlo method and optical lens imaging. Numerical simulation case was used in this study. Radiative images were calculated and images obtained can not only present the energy distribution on the charge-coupled device (CCD) camera target plane but also reflect the energy distribution condition in the simulation furnace. Finally the relationships between volume ele- ments and energy shares were also discussed. 相似文献
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