基于现场总线的实验室网络系统设计

【作者】 姜崇德；

【导师】 沈萌红；

【作者基本信息】 浙江大学 ， 机械设计及理论， 2003， 硕士

【摘要】 实验在高等教育中的重要作用在高校中已取得共识，各高校都在积极的进行实验室的建设。建立开放实验室成为实验室改革的方向，这对实验设备的管理提出了更高的要求。本课题针对目前实验室中实验设备性能及实验设备管理的现状，结合目前正在快速发展的现场总线技术，提出了建立网络化的实验室的构想，并对其实现做了研究，主要工作如下： (1)参考现场总线技术，对实验室网络进行了总体规划，提出了符合实验室要求的实验设备网络结构。 (2)实验室网络系统的硬件实现。这一部分主要是设计了实验室网络的关键组成部分——多功能测控单元MFCU，以满足实验设备监控和实验内容灵活多样的需要。 (3)对通过RS-232总线和RS-485总线进行多机通信进行了研究，实现了具有不同接口标准实验设备的联网。 (4)实验室网络系统的软件实现。这一部分主要包括监控站(计算机)软件、多功能测控单元MFCU软件实现以及各部分通信的通信协议的制订。设计了监控站监控界面，制定了分层的通信协议。 (5)对单片机快速实现CRC校验的算法进行了研究，编制了单片机CRC校验的程序。 (6)系统的测试。实验室网络系统各组成部分的功能实现后，对系统进行了测试。更多还原

【Abstract】 There already is a common acquaintance in universities to importance of experiment in higher education, and universities have making enormous efforts to provide better condition. To establish open laboratory has been orientation that ask for a higher management on experimental equipment. Considering the problems that exist in the management of equipments in laboratory, a new structure of laboratory based on the rapidly developing field bus system has been realized:1. A total layout of laboratory network based on field bus is put forward.2. Hardware realization of laboratory network system. A keycomponent of laboratory network system------MFCU (MultipleFunctions Control Unit) is given to meet the need of the variety of experiments.3. Using RS-232 bus and RS-485 bus, some researchs were made on communication between different CPUs, and realized the network between experimental equipments that have different interfaces.4. Software realization of laboratory network system. The software for computer inspecting and controling experimental equipments and the software for MFCU are realized after designing the layered communication protocol.5. How to realize CRC algorithm in microchip has been discussed in this paper, and the related coding work has been done.6. Testing of the whole system. Having construted the whole system, a test to secure the reliability of the system has been taken.更多还原