Design Of Experimental Data Publishing And Remote Monitoring System Of NBI

Neutral Beam Injection(NBI)is a significant plasma heating and maintaining method which has high heat efficiency and clear physical mechanism.With the continuous advance of the Experimental Advanced Superconducting Tokamak(EAST)experiment,NBI system becomes more important.In order to publish the experimental data and experimental state of NBI,the PhD program focus on the study of the need and design of publishing experimental data and remote monitoring based on the present situation of control subsystem and the data storage method.The major work is listed as follows:Firstly,an experimental information interaction module is designed for data interaction between this system and the control system in a simple and efficient way based on the structure characteristics and operation mechanism of NBI control system.Difficulties of data interaction between different systems and different languages are solved by this module.Meanwhile,the module loads optimization algorithm during the execution of logic processing,which saves a lot of system resources and lays foundation for the design and implementation of other functional modules of the system.Secondly,data publishing and remote monitoring module is designed according to the functional requirements of the system.This module includes three sub-modules:an experimental results publishing module,a LZO-type data visualization sub-module and a remote monitoring sub-module.These sub-modules support the monitoring of real-time experimental results between pulse to pulse,query for historical experimental results,visualization need for LZO-type data and remote monitoring of the system.This module utilizes the B/S structure,which means the users can get service through a unified interface via the Internet.In this way,the drawbacks that experimental data publishing and remote monitoring service can only be accessed in the local area network and distributed data items are difficult to integrated are overcome.Thirdly,based on the implementations of the two previous modules,diagnostic data uploading and injection time statistics module is designed to satisfy the operators’requirements.The module is based on C/S structure because of the particularity of the target users and concurrency limitation of MDS service software.Diagnostic data uploading sub-module is mainly used to publish NBI diagnostic data to the operators,and upload the data confirmed.Injection time statistics sub-module is used to sum up the total injection time in a period specified by time range or shot number.This module meets the demands of publishing and uploading the diagnosis data and injection time statistics.Fourthly,In order to guarantee the security of the system,the B/S structure part filters the request parameters and make related set upon the process on software level to resist attacks.Web portal is upgraded with HTTPS protocol so that the browser side and the server side can make a bidirectional authentication when connecting,which ensures safe and reliable data transmission.