EAST central timing system based on PXI (extension for instrumentation)

A timing system, the technology of PXI-6608, is applied in the field of EAST tokamak controllable nuclear fusion devices, which can solve the problem of not developing a timing trigger system, and achieve flexible and convenient function update and upgrade, fast event response speed, and easy parameter setting. Effect

Inactive Publication Date: 2011-09-28
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0005] Through the search of the patent database, it was found that no research institution applied PXI technology to develop a timing trigger system and applied it to the tokamak nuclear fusion experiment to precisely time the input timing of each subsystem

Method used

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  • EAST central timing system based on PXI (extension for instrumentation)
  • EAST central timing system based on PXI (extension for instrumentation)
  • EAST central timing system based on PXI (extension for instrumentation)

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Embodiment Construction

[0031] Such as figure 1 , figure 2 shown. The system of the invention is composed of a main control computer, a database server, a synchronous optical fiber network, a PXI node and several isolated driving devices. The main control computer, data server and all PXI nodes are connected to the EAST LAN. The user sets the parameters of all clock channels and trigger channels on the PXI node on the master computer. On the one hand, these parameter information is transmitted through the network and stored in the database server for data backup. On the other hand, these parameters are transmitted to each PXI node through the TCP protocol. Sub-node, used to set channel parameters. If the user wants to view and call relevant data, the application program of the main control computer will use ADO technology to access the database server, and search and read the information in the database server according to the user's query conditions. At the same time, the main control computer ...

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Abstract

The invention discloses an EAST central timing system based on PXI (extension for instrumentation), comprising a master control computer, a database server, PXI master nodes, PXI partial nodes and a separated driver which accesses to the PXI master nodes and the PXI partial nodes, wherein the master control computer, the database server, the PXI master nodes and the PXI partial nodes access to anEAST local area network respectively. In the system, a LabVIEWFPGA technology is adopted, thus system functions are upgraded more flexibly and conveniently. The system can be used to provide nanosecond-level clock signals and trigger signals with adjustable pulse width, selectable polarity and controllable enabling property, and is provided with an event trigger function, a signal acquisition function and a system self-checking function. The system can realize clock synchronization and trigger synchronization among partial nodes accurately and is convenient to expand. In the system, PXI industrial products are selected, and a virtual instrument technology is utilized to realize information interaction between hardware equipment and application programs seamlessly.

Description

technical field [0001] The invention relates to the field of EAST tokamak controllable nuclear fusion devices, in particular to a PXI-based EAST central timing system. Background technique [0002] With the rapid development of economy and society, and the excessive development and utilization of fossil energy such as coal, oil, and natural gas, human beings will not only face energy crises such as fuel shortages and resource depletion, but also environmental problems such as air pollution and ecological destruction in the near future. Coordinating the sustainable development of energy and environment is a major issue that our country is currently facing. [0003] The development and utilization of clean new energy in countries around the world is in the ascendant. Controllable thermonuclear fusion, which is clean, safe and has inexhaustible raw materials, has attracted widespread attention and may become an alternative energy source for human beings in the middle of this c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00G01R31/317
Inventor 季振山张祖超王勇
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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