瓮福磷矿选矿厂精矿仓设计

瓮福磷矿选矿厂精矿仓首次采用网架式地面矿仓，造价低，空间利用率高，设备运行平稳可靠，操作灵活方便，工作环境好。超长梭式胶带布料机的设计也是成功的。     

优化操作 减少石脑油的输转损耗

石脑油是乙烯裂解装置的主要原因之一，针对乙燃裂解装置及石脑油输转系统改扩建后，石脑油在输转过程中所造成的油品损耗原因进行了分析，采取措施，优化操作，减少了石脑油的输转损耗，降低了企业的生产成本，经济效益显著。     

Implications of particle size to transient stage of deep bed filtration

This study was aimed at investigating the effect of particle size, mostly in the submicron range, on break-through stage of filtration. Latex beads, with diameters ranging from 0.46- to 2.967-μm were filtered through filter grains of diameters 0.1-, 0.175- and 0.45-mm. Experimental conditions were chosen so as to obtain breakthrough curves. The experimental results showed that the initial efficiency follows the pattern reported by previous experimental and theoretical studies, i.e., lower efficiency for 0.825-μm particles which fall in the range of critical size. However, the particle removal during the transient stage increased with an increase in particle size for the range of sizes studied. This pattern is qualitatively confirmed by the theoretical predictions of Vigneswaran and Chang (1986) model. This study also provides experimental verification of the effect of the ratio of particle size and grain size at different stages of filtration.     

结合改进角点检测的优化核相关滤波方法

通常,核相关滤波（KCF）算法易受遮挡等实际检测情况的影响。为使跟踪结果更为准确,提出了结合改进角点检测的优化核相关滤波方法。由自适应Harris角点数量适宜且鲁棒性强的特点,解决了广义霍夫算法提取冗余边缘点速度慢,以及因光照变化导致的边缘点提取不完整的问题。同时,自适应阈值法的引入将噪声对角点提取的影响降为最低。将目标分块并对每一目标子块单独跟踪,由子块间相对位置解决KCF算法在尺度发生变化时目标易丢失的问题。此外,对学习率参数进行了自适应更新,降低了KCF算法的学习率,减少了在目标被遮挡时的模型更新误差。结合交并比与匈牙利算法关联多个目标,逐一取出对应坐标并由广义霍夫算法描绘的目标轮廓得出最终位置,抑制了目标快速运动时KCF算法的漂移现象。实验表明,所提方法有效提高了目标跟踪的可靠性。     

基于六轴MEMS器件姿态测量系统

为了解决噪声和漂移等原因造成的误差不断累积的问题,针对陀螺仪的静态性能以及加速度计的动态性能,提出了一种利用六轴MEMS器件对照相机三脚架的稳定测量系统,介绍了MEMS器件的工作原理,介绍硬件系统和软件系统,完成了基于ADXR450陀螺仪和ADXL355加速度计的检测硬件系统设计,通过传感器获取角速度加速度信息,采用不同的滤波方式对输出结果进行了分析,比较卡尔曼滤波和一阶RC数字滤波;经比较,卡尔曼滤波实时性更好,一阶RC滤波动态响应更好;实验证明,系统静态下更适用于一阶滤波,计算出姿态测量角度误差在0.104°以内,得到理想的姿态信息,能有效地提高检测目标姿态的精度。     

Multi-Dimensional Pedestrian System on the New Campus of University of Macau

The Multi-dimensional Pedestrian System( MPS) is an integral part of the new campus of University of Macau. It observes the principle of "pedestrian first " and features a pedestrian-vehicle dividing system.Based on a comprehensive analysis of the location,climate,ecology and other factors of the project site,the conception of the idea of MPS and the related researches are illustrated. The transportation features of the MPS,as summarized,include multi-dimensions,short-distance and weather-resistance. Its features for the sake of livability include integration of nature, respect for the environment and sharing of landscape. Upon the completion of the project, the effects on its users were tested. Finally, some constructive rules for the construction of similar campus pedestrian systems were proposed.     

高斯滤波算法在缺陷视觉检测中的应用研究

机器视觉中的缺陷检测是个难点。图像的滤波处理通常是为了消除噪声干扰,处理的原则是保留大部分有效信号,抑制少数的异常信号。在机器视觉的缺陷检测时,需要提取图像中的每一个异常信号,忽略大部分正常图像信号,与图像的滤波处理正好相反。在大量实践基础上,本文总结出了一套基于高斯滤波算法的缺陷检测方法,特别适合细微缺陷的检测。该方法已经投入应用,在应用过程中取得了良好的效果。     

扩大小径管对接焊缝检出范围的滤波方法

从分析X射线检测小径管对接焊缝时散射线对检测的影响出发,提出利用滤波方法来扩大检测范围.分析了滤波片的材料、尺寸以及放置位置对检测范围的影响.实验表明,滤波方法能有效地扩大对接焊缝检出范围,并且操作简单方便.     

射线检测中运动模糊图像的恢复

X射线实时成像检测中,若曝光时间内工件和X射线图像采集设备有相对线性运动,会造成图像运动模糊降质。提出利用运动模糊点扩展函数的频域特征和Hough变换得到模糊图像的运动方向,并将之旋转到水平轴方向,利用差分法求解运动模糊点扩展函数的长度。并用Wiener滤波的方法,恢复降质的图像,取得了较好的效果。     

Directional filter bank-based segmentation for improved evaluation of nondestructive evaluation images

This paper introduces a directional filter bank (DFB) for segmentation of NDE images containing directional information. The DFB is used to split an image into a desired number of sub-band images with each sub-band image containing features belonging only to a given angular range. The DFB is a two-channel decomposition employing the Quincunx sampling matrix and the diamond half band filter pair. The DFB is also designed to incorporate the property of perfect reconstruction or alias free reconstruction. Applications of the DFB towards segmenting C-scan images of fiber-reinforced composites, magnetic flux leakage (MFL) images of seamless tubes, IR images of solar cell panels and optical images for the computation of area coverage in a shot-peening process are discussed.