Flexible automation of a biotechnological pilot-plant with real-time network

1994 Proceedings of IEEE International Conference on Control and Applications Pub Date : 1994-08-24 DOI:10.1109/CCA.1994.381280

K. Gollmer, C. Posten

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引用次数: 2

Abstract

The development of biochemical engineering towards integrated bioprocesses have influenced the demands of the applied control environment. In the pilot-plant of GBF we use a controller area network (CAN) based field-bus network to interconnect the decentralized process control computers under real-time conditions. In this paper the implementation and the performance of the CAN field-bus in an hierarchical automation concept is outlined. While some fermenters and downstream devices are connected to the network directly via an A/D converter and bus access in a so-called mini-module, other fermenters are automated with decentralized process computers which act as bus nodes with full functionality. A master computer interconnects several sub-nets and supervises the proper operating of all network components. In addition, a database is handled from this master, where all objects in the network, representing measured, controlled or online calculated variables, are specified. The CAN application layer enables an open communication from CAN-modules of different manufacturers. The CAN-message-specification allows the description of the data transfer between the individual user programs via a client/server model.<>

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基于实时网络的生物技术中试工厂柔性自动化

生物化学工程向一体化生物过程的发展影响了对应用控制环境的要求。在GBF中试装置中，采用基于控制器局域网(CAN)的现场总线网络实现分散过程控制计算机的实时互联。本文概述了CAN现场总线在分层自动化概念下的实现及其性能。虽然一些发酵罐和下游设备通过所谓的迷你模块中的A/D转换器和总线访问直接连接到网络，但其他发酵罐是由分散的过程计算机自动化的，这些计算机充当具有完整功能的总线节点。一台主计算机连接多个子网，并监督所有网络组件的正常运行。此外，从这个主控处理一个数据库，其中指定网络中的所有对象，表示测量的、控制的或在线计算的变量。CAN应用层实现了不同厂家CAN模块之间的开放通信。can消息规范允许通过客户机/服务器模型描述各个用户程序之间的数据传输

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1994 Proceedings of IEEE International Conference on Control and Applications

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