With the development of the manufacturing industry and the need of the refrigerated containers in the world market , research on the thermal engineering property experiment system for refrigerated container has more instruction . the research works in this paper focus mainly on the following aspects : the design characteristics , main structures and preliminary operation situation of refrigeration unit control system are described 冷藏集装箱属运输制冷装置,是“冷藏链”重要的一环,是最灵活和最有发展前途的“门对门”运输工具,近年来已发展成为国际贸易中一项新型的重要运输方式,也将是21世纪重要的冷藏运输工具。
This paper sums the situations and trends of domestic and international engineering machinery firstly , discusses the demands and implements of intelligent and long - range monitoring and controlling , and constructs a three - layer model of the engineering machinery long - range monitorin and control system : the front unit control systems , the machine - mounted monitoring system and the long - range control center ; proposes a kind of structure of embedded system based on c / os - ; dissects the characteristics , structure , operation and schedule principle of c / os - , modified the kernel , and improves dependability of the schedule algorithm ; designs the hardware in detail : the microprocessor at91rm9200 , the store unit , the serial interface , the human - computer interaction interface , the can bus control module , the debug interface and the reset circuit etc . ; on this basis , succeeds in transplanting c / os - to the system , sets up the operating system framework , designs the driver , sets up the institutional framework of upper user ' s application , provides the method and concrete application process of the graphical user interface module based on c / os - . the system designed in this paper , not only has the functions of local control , friendly human - computer interface , but also has various interfaces which make the system can be managed by the long - rang center 本文首先综述了国内外工程机械行业发展的现状和趋势,阐明了实施工程机械智能化及远程监控的意义和需求,并为此构建了工程机械远程监控系统三层结构模型:前端单元控制系统、车载监控系统和远程监控中心;提出了一种基于c / os -的嵌入式车载监控系统构建方案;深刻剖析了c / os -的特点、内核结构、运作机理、调度算法,在此基础上对其内核进行移植前的必要修改,并对其调度算法进行了可靠性改进;对构成嵌入式系统硬件的各个主要部分:嵌入式微处理器at91rm9200 、存储单元、串行接口、人机交互接口、 can总线控制模块、调试接口以及复位电路等做了详细的设计;在此基础上,成功地将c / os -实时内核移植到本文研发的嵌入式硬件系统中,建立了车载监控系统的操作系统体系结构,编写了该操作系统的底层硬件驱动程序,建立了上层用户应用程序的组织结构,并给出了图形用户界面模块化应用程序在c / os -操作系统上的建立方法和具体应用过程。
By using simplified design , energy - saving design and other modem design methods comprehensively , combining with pc control and two - way cartridge valve technique , research and development is taken on logical cartridge unit control technique for the press , special hydraulic system of two - way cartridge valve for the press is developed , stress of the integrated block is analyzed by fem software ansys 综合运用简化设计、节能设计等现代设计方法,结合pc控制和二通插装阀技术,对橡胶压块机智能化逻辑插装单元控制技术进行研究和开发,研制出橡胶压块机专用的二通插装阀集成液压系统,并利用有限元分析软件ansys对集成块进行应力分析。