Abstract: Disclosed is an OPC UA-based centralized user configuration method and system for a time-sensitive network. The system includes user terminal stations, a UA-TSN configuration management middleware and a centralized user configuration entity. The user terminal station includes a plurality of field devices and a UA-TSN coordinator; the UA-TSN configuration management middleware obtains an OPC UA address information list by accessing the UA-TSN coordinator; and the centralized user configuration entity extracts and analyzes TSN stream demand information aggregated in the UA-TSN configuration management middleware. According to the present disclosure, the automatic transmission and configuration of TSN network scheduling information are realized, and the operation complexity in the large-scale TSN network configuration process is reduced.

Abstract: Disclosed is an OPC UA-based centralized user configuration method and system for a time-sensitive network. The system includes user terminal stations, a UA-TSN configuration management middleware and a centralized user configuration entity. The user terminal station includes a plurality of field devices and a UA-TSN coordinator; the UA-TSN configuration management middleware obtains an OPC UA address information list by accessing the UA-TSN coordinator; and the centralized user configuration entity extracts and analyzes TSN stream demand information aggregated in the UA-TSN configuration management middleware. According to the present disclosure, the automatic transmission and configuration of TSN network scheduling information are realized, and the operation complexity in the large-scale TSN network configuration process is reduced.

Abstract: The present invention relates to an IPv6 wireless sensor network node mobility management method based on RPL routing protocol. The present invention achieves the following: first, placing an RSSI in an ACK frame so as to detect the mobile state of a node and improve the accuracy of mobile detection; second, on the premise of compatibility with an original RPL routing protocol, improving the options for DIS and DAO in selecting the optimal parent node and updating a routing table; and finally, designing a cache method to prevent messages sent to the mobile node from being lost in the process of moving, and designing a new 6LoWPAN header so as to complete message caching.

Abstract: The present invention relates to an IPv6 wireless sensor network node mobility management method based on RPL routing protocol. The present invention achieves the following: first, placing an RSSI in an ACK frame so as to detect the mobile state of a node and improve the accuracy of mobile detection; second, on the premise of compatibility with an original RPL routing protocol, improving the options for DIS and DAO in selecting the optimal parent node and updating a routing table; and finally, designing a cache method to prevent messages sent to the mobile node from being lost in the process of moving, and designing a new 6LoWPAN header so as to complete message caching.

Abstract: The present application relates to a CoAP-based OPC UA message transmission method, comprising: packaging and encoding data by using an OPC UA information model; packaging an entire OPC UA data message into a load part of a CoAP message; then, on the basis of a UA-CoAP server, querying whether a CoAP-to-HTTP proxy server is present in a network; if present, transmitting a UA-CoAP data message to the CoAP-to-HTTP proxy server; converting the received data message into HTTP; and transmitting the data message to an OPC UA client. The present application solves the problem wherein data of a limited-resource industrial field device cannot be uniformly described and cannot be uniformly accessed, while the requirement of the industrial field device accessing a web service is satisfied.