基于双冗余以太网通信的气象实时观测数据采集网络传输系统的设计与实现

随着以太网技术应用的日趋成熟,在海洋和大气观测领域,人们希望对传统不具备网络通讯能力的观测仪器进行智能化和网络节点化改造。设计和实现了一套气象实时观测数据采集与网络传输系统。该系统采用基于ARM的嵌入式系统集成设计方案,实现了对外部传感器实时观测数据的采集和以太网通信。作为多级网络系统中的一个网络节点,该采集传输系统采用双冗余以太网通信接口设计,使系统中的双路以太网在一路局部故障或线路受损时可以自动冗余切换。这一设计特点大幅提高了作为网络节点的数据采集传输系统在与外部其他设备通信时数据传输的可靠性。通过在以太网条件下,网络闭环控制运行试验等测试,证明所开发的气象实时观测数据采集网络传输系统运行稳定可靠,双冗余以太网接口切换正常,数据采集传输及时准确,可完全满足实际应用的需要。

Design & Implementation of Acquisition and Transmission Network System for Meteorological Real-time Data Based on Dual-redundancy Ethernet Communication

With Ethernet technology maturing,in the field of ocean and atmosphere observation,it is hoped that the traditional observation instruments without network communication ability could become intelligent and networking.A meteorological real-time data acquisition and transmission network system was designed and implemented based on the Ethernet communication technology,which adopts the embedded system single-chip solution based on ARM,collects the external sensors data and communicates in the Ethernet.As a network node in the multi-level system,this acquisition system adopts dual-redundancy Ethernet communication connector design and makes the twin channel Ethernet in the system redundancy switch automatically when one part breakdowns or the communication line fault happens.It increases the dependability of data transmission when communicates between the data acquisition system as network node and other external equipments.Under the condition of network,the closed-loop control experiment proved that the real-time data acquisition system could run steadily and dependably,the dual-redundancy Ethernet connectors could switch normally,data acquisition could communicate timely and accurately.The system could fulfill the needs of practical application completely.