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In this paper, a description of the control system’s software and hardware architecture for the Experimental Advanced Superconducting Tokamak neutral beam injector (NBI) is introduced. The chosen platform is a CPCI-based and PXI-based computerized network system. Three PXI/CPCI crates house several boards for performing analogue signal acquisition, analogue voltage generation, signal conditioning, digital input detection and digital output generation. Two server computers running CentOS 6.3 operating system act as control server and data server respectively. A virtual instrument for the timing system is developed with LabVIEW 2010 on the PXI-based platform. Graphical user interfaces for monitoring and programming purposes are developed with LabVIEW and WinCC integrated development environments by using TCP/IP network protocol under the Windows operating system. Experimental results demonstrate that the visualization and automation of NBI experimental operations are successfully implemented by using the functions of remote monitoring, interlock protection, and data processing.

As the center of neutral beam injector (NBI) control system, main control server controls the whole NBI system’s input and output services, and it verifies whether the experimental parameters are reasonable, stores the real-time data, monitors the statuses of the experimental equipments in real time and makes it easy to perform self-protection and alarm automatically. In order to realize these functions, MYSQL technology, client/server communication mode, multithreading and cyclic redundancy check technology are used in this paper.

The neutral beam injection (NBI) heating is one of the mainly auxiliary plasma heating methods for EAST. In this paper, a data server application software is presented for NBI control system. This application software is developed on Centos OS by C programming language with TCP and multithreading technology. It mainly focuses on storing and querying experimental pulse data and engineering data; experimental user’s operation records; experimental configuration information; the collected data after processing; as well as managing and releasing experimental discharge shot number and so on. By using the unified data header structure, the data server software provides universal information exchange interfaces for different service request terminals with different operating platform, such as WinCC, Labview. With the help of data server software, those problems related on the storage, querying and processing of information and data for NBI control system are well solved.