虹吸式雨水排放系统的应用

介绍虹吸式雨水排放系统的原理、优越性及其安装。     

国内外化工企业消防系统设计比较

总结国内与国际化工企业消防系统设计上的各自特点．对消防系统、电源保障、水泵的启动方式和消防水池的形式等方面进行了比较。     

Study on polarized optical flow algorithm for imaging bionic polarization navigation micro sensor

At present, both the point source and the imaging polarization navigation devices only can output the angle information, which means that the velocity information of the carrier cannot be extracted from the polarization field pattern directly. Optical flow is an image-based method for calculating the velocity of pixel point movement in an image. However, for ordinary optical flow, the difference in pixel value as well as the calculation accuracy can be reduced in weak light. Polarization imaging technology has the ability to improve both the detection accuracy and the recognition probability of the target because it can acquire the extra polarization multi-dimensional information of target radiation or reflection. In this paper, combining the polarization imaging technique with the traditional optical flow algorithm, a polarization optical flow algorithm is proposed, and it is verified that the polarized optical flow algorithm has good adaptation in weak light and can improve the application range of polarization navigation sensors. This research lays the foundation for day and night all-weather polarization navigation applications in future.     

电热微夹钳的热效应分析和数值模拟

介绍了一种新型多晶硅电热微夹钳,该夹钳在V形电热微驱动器的作用下,能够产生近似线性的位移和产生较大的夹持力。在全面考虑了空气对流、辐射、热传导及材料特性等各种因素的情况下,建立了该电热微夹钳的有限元模型,利用该模型分别进行了稳态和瞬态的仿真分析,模拟出输出位移和温度场随电压的变化情况,以及电热微夹钳的热响应时间。对仿真的结果进行了讨论。     

晴朗天气下全天空域偏振定向方法

天空偏振导航定向具有无误差累积、不受电磁干扰的优势.提出一种以信标发光二极管为基准的鱼眼镜头天顶角标定方法,并利用瑞利散射理论和太阳矢量约束计算载体坐标系下的太阳方位角.通过实际实验分析,所提出的方法相比拟合太阳子午线的两种方法(最小二乘法、分箱法),太阳相对转角的均方根误差(RMSE)最小为0.28°,表明这种标定方法有效,将其用于天空偏振导航定向具有可行性.     

系统级设计方法及其在力学特性集成测试中的应用

随着对微尺度下MEMS材料力学特性研究的深入,片上集成测试方法应用愈加广泛.针对MEMS系统具有多能量域耦合的特点,应用基于MEMS宏模型技术的系统级设计工具来获得整个系统的行为特性已成为研究热点.概述了几种建立MEMS宏模型的基本方法,并对其中的节点法进行了详细阐述,利用CoventorWare软件设计了一种测试多晶硅杨氏模量的集成测试结构,首次将系统级设计方法引入集成测试结构的设计,提高了设计效率,仿真结果可靠.