凉水塔技术研究与探讨

通过对我厂引进的大型进口设备———Marley—600型冷却塔进行技术改造情况的介绍,具体分析了进口材料与国产材料的本质区别,并具体介绍了我厂的使用情况。此次技术改造在大化肥行业是首次进行,并取得了成功。论证了进口设备走国产化道路的必然性及可行性,从而为我国的其他大型Marley—600型冷却塔设备走国产化道路作了较好的铺垫。     

引汉济渭工程运行调度模式研究

从引汉济渭工程运行调度的实际需求出发,设计了工程运行调度新模式并集成实现。基于Hadoop搭建工程运行调度大数据服务平台,基于数字地球构建了工程运行调度可视化仿真系统,基于云服务架构建立工程运行调度应用支撑平台,以主题、组件、知识图为牵引建立了工程运行调度应用支撑库,基于数字地球和应用支撑平台构建了工程调配水一体化数字水网,基于平台、数字水网、组件、知识图搭建了工程运行调度主题业务应用,实现了运行调度业务主题化云服务。该模式技术理念先进,应用灵活方便,适用性强,可为工程运行调度提供重要技术支撑,具有良好的应用前景。     

引汉济渭工程运行调度综合服务平台的应用实践

针对引汉济渭工程运行调度的实际需求和特点,基于云计算技术,采用面向服务的体系结构(SOA)和JAVA EE平台技术架构,研发了基于云服务架构的引汉济渭工程运行调度综合服务平台,建立了基于平台、组件、知识图及可视化工具灵活搭建的引汉济渭工程运行调度业务应用系统构建模式,形成基于平台、基于组件、基于主题、基于可视化的应用模式,解决了传统的工程运行调度系统应用性差、功能单一、可扩展性差及应用模式单一等问题。通过平台提供工程运行调度业务服务,为工程联合调度提供技术支撑。     

An open-source multi-DOF articulated robotic educational platform for autonomous object manipulation

This research presents an autonomous robotic framework for academic, vocational and training purpose. The platform is centred on a 6 Degree Of Freedom (DOF) serial robotic arm. The kinematic and dynamic models of the robot have been derived to facilitate controller design. An on-board camera to scan the arm workspace permits autonomous applications development. The sensory system consists of position feedback from each joint of the robot and a force sensor mounted at the arm gripper. External devices can be interfaced with the platform through digital and analog I/O ports of the robot controller. To enhance the learning outcome for beginners, higher level commands have been provided. Advanced users can tailor the platform by exploiting the open-source custom-developed hardware and software architectures. The efficacy of the proposed platform has been demonstrated by implementing two experiments; autonomous sorting of objects and controller design. The proposed platform finds its potential to teach technical courses (like Robotics, Control, Electronics, Image-processing and Computer vision) and to implement and validate advanced algorithms for object manipulation and grasping, trajectory generation, path planning, etc. It can also be employed in an industrial environment to test various strategies prior to their execution on actual manipulators.     

移动平台闸站监控系统的设计与实现

针对水利闸站监控系统对于应急信息和措施的需求, 提出了移动平台水利闸站监控系统。首先分析了系统的 整体框架结构, 然后实现了一套移动客户端软件完成水利闸站监控的功能。将手机客户端与云平台服务器相连, 通 过网络通信方式获取闸站现场传感器信息, 远程采集和存储数据, 客户端移动终端系统具有前端处理与计算能力通 过移动无线网络访问服务器, 实现了对多控制节点的远程监控。结果表明该系统能及时有效地获取闸站水利信息 并进行调度, 提高了水利信息化水平。     

A low-cost real time virtual system for postural stability assessment at home

Background and objective

The degeneration of the balance control system in the elderly and in many pathologies requires measuring the equilibrium conditions very often. In clinical practice, equilibrium control is commonly evaluated by using a force platform (stabilometric platform) in a clinical environment.In this paper, we demonstrate how a simple movement analysis system, based on a 3D video camera and a 3D real time model reconstruction of the human body, can be used to collect information usually recorded by a physical stabilometric platform.

Methods

The algorithm used to reconstruct the human body model as a set of spheres is described and discussed. Moreover, experimental measurements and comparisons with data collected by a physical stabilometric platform are also reported. The measurements were collected on a set of 6 healthy subjects to whom a change in equilibrium condition was stimulated by performing an equilibrium task.

Results

The experimental results showed that more than 95% of data collected by the proposed method were not significantly different from those collected by the classic platform, thus confirming the usefulness of the proposed system.

Conclusions

The proposed virtual balance assessment system can be implemented at low cost (about 500$) and, for this reason, can be considered a home use medical device. On the contrary, astabilometric platform has a cost of about 10,000$ and requires periodical calibration. The proposed system does not require periodical calibration, as is necessary for stabilometric force platforms, and it is easy to use. In future, the proposed system with little integration can be used, besides being an emulator of a stabilometric platform, also to recognize and track, in real time, head, legs, arms and trunk, that is to collect information actually obtained by sophisticated optoelectronic systems.     

免疫粒子群算法在城市有轨电车运行调整中的应用研究

针对城市有轨电车运行环境复杂、列车运行调整存在众多约束条件、求解难度大等问题,提出虚站台概念,在此基础上建立了优化的列车运行调整模型.引入免疫系统中的免疫记忆特性和抗体浓度抑制思想,采用免疫粒子群算法对此模型进行求解,并以海珠区环岛新型城市有轨电车实验段数据进行仿真.结果表明,在引入虚站台概念基础上,采用免疫粒子群算法能够有效地解决城市有轨电车运行调整问题,并且其优化能力优于遗传算法.     

近红外分析网络共享平台中复杂工作流实现算法

近红外分析共享平台中的采集工作流是一个以数据为中心的工作流。对系统中复杂采集工作流的跳转执行过程进行了详细分析,针对自由工作流跳转造成的数据和状态不一致性的问题,提出了一个任务执行优先关系算法,计算采集工作流中各个活动任务执行次序关系值,并构造一个执行次序关系树,记录各任务活动的状态信息;在流程回退、撤销、跳转时保证了数据和状态的一致性,较好地实现了跨任务活动的跳转。应用结果表明,此算法能够正确高效地实现复杂流程的跳转。     

基于工作流和智能手机的城市综合管理平台

为适应现代城市综合管理的需要,提高城市管理水平,提出利用GIS技术的二三维一体化联动提高管理平台可视化;基于工作流的管理使事件处理更加自动化;利用智能手机的方便使管理人员与系统进行动态交互;利用模糊数学提高任务完成质量评价的科学性。整个平台在Windows7下进行开发,基于B/S(浏览器/服务器)和C/S(客户端/服务器)结合的架构,运用JavaEE、工作流、模糊数学、无线通信、视频融合等技术,实现平台对交通灯、人员、车辆、消防、事件和任务的管理。     

风力发电机组无线监测系统设计

针对目前风力发电机组有线监测系统安装、维护不便和监测点有限等问题,设计了一种基于Zig Bee的无线传感器网络监控系统。通过网关将Zig Bee协议转换成TCP/IP协议后,Zig Bee子网采集的数据,经光纤网络传送至中心服务器,并通过登陆界面来显示和控制无线监测系统,实现风力发电机组的智能化监测。测试表明:测量精度达到设计要求,实现高效率、高可靠性的监测,并通过Internet提供远程数据服务,进行离线数据分析和挖掘。