工业物联网(Industrial Internet of Things,IIoT)可以将各种工业设备、监测仪表以及传感器进行相互连接,设备的运行状态可通过监测仪表与传感器进行全面感知,并根据感知数据对设备状态进行分析与预测。然而要对海量的感知数据进行分析...工业物联网(Industrial Internet of Things,IIoT)可以将各种工业设备、监测仪表以及传感器进行相互连接,设备的运行状态可通过监测仪表与传感器进行全面感知,并根据感知数据对设备状态进行分析与预测。然而要对海量的感知数据进行分析处理需要大量的存储空间与计算能力,将其传送到云平台势必将占用大量的带宽并产生较大的时延,很难满足对设备状态实时分析与诊断的需求。因此,针对工业设备状态感知的数据,提出了基于最优差分和线性拟合降熵变换的无损压缩方法,在数据采集的边缘侧对感知数据进行无损压缩,从而大大提高传输效率,使得感知数据能快速传送到云平台进行分析与处理。该方法根据数据差值序列方差大小和采集频率高低从最优差分和曲线拟合差值中选取有效的降熵变换进行压缩,并采用LZO(Lempel-Ziv-Oberhumer)压缩算法进行二次压缩。在两类不同的数据集上对所提方法进行了测试,实验结果表明,该方法的压缩率最低与最高分别可达77%和93%,同时验证了其无损重构的特性。展开更多
As the key ion source component of nuclear fusion auxiliary heating devices, the radio frequency （RF） ion source is developed and applied gradually to offer a source plasma with the advantages of ease of control and...As the key ion source component of nuclear fusion auxiliary heating devices, the radio frequency （RF） ion source is developed and applied gradually to offer a source plasma with the advantages of ease of control and high reliability. In addition, it easily achieves long-pulse steady-state operation. During the process of the development and testing of the RF ion source, a lot of original experimental data will be generated. Therefore, it is necessary to develop a stable and reliable computer data acquisition and processing application system for realizing the functions of data acquisition, storage, access, and real-time monitoring. In this paper, the development of a data acquisition and processing application system for the RF ion source is presented. The hardware platform is based on the PXI system and the software is programmed on the LabVIEW development environment. The key technologies that are used for the implementation of this software programming mainly include the long-pulse data acquisition technology, multi- threading processing technology, transmission control communication protocol, and the Lempel-Ziv-Oberhumer data compression algorithm. Now, this design has been tested and applied on the RF ion source. The test results show that it can work reliably and steadily. With the help of this design, the stable plasma discharge data of the RF ion source are collected, stored, accessed, and monitored in real-time. It is shown that it has a very practical application significance for the RF experiments.展开更多
Neutral beam injection （NBI） heating is one of the most efficient auxiliary plasma heating methods for fusion devices. The data acquisition control system （DACS） with PXI （pe- ripheral component interconnect exte...Neutral beam injection （NBI） heating is one of the most efficient auxiliary plasma heating methods for fusion devices. The data acquisition control system （DACS） with PXI （pe- ripheral component interconnect extensions for instrumentation） data acquisition card for the first NBI system in the experimental advanced superconducting tokamak （EAST） is presented in this paper. As an important sub-system, DACS is designed to obtain physical measurement signals in the EAST NBI system and to deal and store these data with the Lempel-Ziv-Oberhumer （LZO） lossless data compression algorithm, as well as offer convenient data call-back and access inter- faces to the user for examining and analyzing the data. Experimental results show that accurate data will ensure that researchers correctly analyze it and then properly adjust the experimental parameters or operation, so DACS should take a large step in improving experimental efficiency. Tile hardware and software sections are briefly presented in this paper, and now this system has been tested to be able to work reliably and steadily.展开更多
One of the most important project missions of neutral beam injectors is the implementation of 100 s neutral beam injection （NBI） with high power energy t.o the plasma of the EAST superconducting tokamak. Correspondi...One of the most important project missions of neutral beam injectors is the implementation of 100 s neutral beam injection （NBI） with high power energy t.o the plasma of the EAST superconducting tokamak. Correspondingly, it＇s necessary to construct a high-speed and reliable computer data processing system for processing experimental data, such as data acquisition, data compression and storage, data decompression and query, as well as data analysis. The implementation of computer data processing application software （CDPS） for EAST NBI is presented in this paper in terms of its functional structure and system realization. The set of software is programmed in C language and runs on Linux operating system based on TCP network protocol and multi-threading technology. The hardware mainly includes industrial control computer （IPC）, data server, PXI DAQ cards and so on. Now this software has been applied to EAST NBI system, and experimental results show that the CDPS can serve EAST NBI very well.展开更多
A set of data processing software is presented in this paper for processing NBI spectroscopic data.For better and more scientific managment and querying these data,they are managed uniformly by the NBI data server.The...A set of data processing software is presented in this paper for processing NBI spectroscopic data.For better and more scientific managment and querying these data,they are managed uniformly by the NBI data server.The data processing software offers the functions of uploading beam spectral original and analytic data to the data server manually and automatically,querying and downloading all the NBI data,as well as dealing with local LZO data.The set software is composed of a server program and a client program.The server software is programmed in C/C＋＋under a CentOS development environment.The client software is developed under a VC6.0 platform,which offers convenient operational human interfaces.The network communications between the server and the client are based on TCP.With the help of this set software,the NBI spectroscopic analysis system realizes the unattended automatic operation,and the clear interface also makes it much more convenient to offer beam intensity distribution data and beam power data to operators for operation decision-making.展开更多
文摘工业物联网(Industrial Internet of Things,IIoT)可以将各种工业设备、监测仪表以及传感器进行相互连接,设备的运行状态可通过监测仪表与传感器进行全面感知,并根据感知数据对设备状态进行分析与预测。然而要对海量的感知数据进行分析处理需要大量的存储空间与计算能力,将其传送到云平台势必将占用大量的带宽并产生较大的时延,很难满足对设备状态实时分析与诊断的需求。因此,针对工业设备状态感知的数据,提出了基于最优差分和线性拟合降熵变换的无损压缩方法,在数据采集的边缘侧对感知数据进行无损压缩,从而大大提高传输效率,使得感知数据能快速传送到云平台进行分析与处理。该方法根据数据差值序列方差大小和采集频率高低从最优差分和曲线拟合差值中选取有效的降熵变换进行压缩,并采用LZO(Lempel-Ziv-Oberhumer)压缩算法进行二次压缩。在两类不同的数据集上对所提方法进行了测试,实验结果表明,该方法的压缩率最低与最高分别可达77%和93%,同时验证了其无损重构的特性。
基金the NBI team and the partial support of National Natural Science Foundation of China (No. 61363019)National Natural Science Foundation of Qinghai Province (No. 2014-ZJ-718)
文摘As the key ion source component of nuclear fusion auxiliary heating devices, the radio frequency （RF） ion source is developed and applied gradually to offer a source plasma with the advantages of ease of control and high reliability. In addition, it easily achieves long-pulse steady-state operation. During the process of the development and testing of the RF ion source, a lot of original experimental data will be generated. Therefore, it is necessary to develop a stable and reliable computer data acquisition and processing application system for realizing the functions of data acquisition, storage, access, and real-time monitoring. In this paper, the development of a data acquisition and processing application system for the RF ion source is presented. The hardware platform is based on the PXI system and the software is programmed on the LabVIEW development environment. The key technologies that are used for the implementation of this software programming mainly include the long-pulse data acquisition technology, multi- threading processing technology, transmission control communication protocol, and the Lempel-Ziv-Oberhumer data compression algorithm. Now, this design has been tested and applied on the RF ion source. The test results show that it can work reliably and steadily. With the help of this design, the stable plasma discharge data of the RF ion source are collected, stored, accessed, and monitored in real-time. It is shown that it has a very practical application significance for the RF experiments.
基金supported by National Natural Science Foundation of China(No.11075183)
文摘Neutral beam injection （NBI） heating is one of the most efficient auxiliary plasma heating methods for fusion devices. The data acquisition control system （DACS） with PXI （pe- ripheral component interconnect extensions for instrumentation） data acquisition card for the first NBI system in the experimental advanced superconducting tokamak （EAST） is presented in this paper. As an important sub-system, DACS is designed to obtain physical measurement signals in the EAST NBI system and to deal and store these data with the Lempel-Ziv-Oberhumer （LZO） lossless data compression algorithm, as well as offer convenient data call-back and access inter- faces to the user for examining and analyzing the data. Experimental results show that accurate data will ensure that researchers correctly analyze it and then properly adjust the experimental parameters or operation, so DACS should take a large step in improving experimental efficiency. Tile hardware and software sections are briefly presented in this paper, and now this system has been tested to be able to work reliably and steadily.
基金supported by National Natural Science Foundation of China(No.11075183)
文摘One of the most important project missions of neutral beam injectors is the implementation of 100 s neutral beam injection （NBI） with high power energy t.o the plasma of the EAST superconducting tokamak. Correspondingly, it＇s necessary to construct a high-speed and reliable computer data processing system for processing experimental data, such as data acquisition, data compression and storage, data decompression and query, as well as data analysis. The implementation of computer data processing application software （CDPS） for EAST NBI is presented in this paper in terms of its functional structure and system realization. The set of software is programmed in C language and runs on Linux operating system based on TCP network protocol and multi-threading technology. The hardware mainly includes industrial control computer （IPC）, data server, PXI DAQ cards and so on. Now this software has been applied to EAST NBI system, and experimental results show that the CDPS can serve EAST NBI very well.
基金supported by National Natural Science Foundation of China(No.11075183)the Chinese Academy of Sciences Knowledge Innovation
文摘A set of data processing software is presented in this paper for processing NBI spectroscopic data.For better and more scientific managment and querying these data,they are managed uniformly by the NBI data server.The data processing software offers the functions of uploading beam spectral original and analytic data to the data server manually and automatically,querying and downloading all the NBI data,as well as dealing with local LZO data.The set software is composed of a server program and a client program.The server software is programmed in C/C＋＋under a CentOS development environment.The client software is developed under a VC6.0 platform,which offers convenient operational human interfaces.The network communications between the server and the client are based on TCP.With the help of this set software,the NBI spectroscopic analysis system realizes the unattended automatic operation,and the clear interface also makes it much more convenient to offer beam intensity distribution data and beam power data to operators for operation decision-making.
