Abstract:

In order to establish a system of intelligent dyeing and finishing workshop in textile dyeing and finishing industry, an information system modeling scheme based on OPC UA was proposed. Taking the flat continuous production workshop as an example, the "dyeing and finishing equipment type" and "monitoring unit type" were abstracted on the basis of analyzing the physical model of the key equipment, which were used to define the common attributes, control methods of the equipment and monitoring unit, and unique properties through the private properties of various devices. The model definition fully complies with the OPC UA international standard, enabling the device to provide standardized services to the outside, presenting a unified interface and communication protocal, and achieving interconnection and interoperability between devices and systems. On the basis of establishing the equipment model, the logical model and overall architecture of the textile intelligent dyeing and finishing workshop were built. The data communication between the equipment end and the manufacturing execution system was implemented by using the OPC UA communication protocol. The model and workshop architecture have been applied in actual production, providing important references to use of OPC UA technology in the whole textile industry.

Key words: OPC UA, intelligent, dyeing workshop, communication specification, information model