为解决传统监测系统无法做到精确、实时地监控各地区大气环境数据的问题,设计了基于SCADA(Supervisory Control And Data Acquisition)系统,集组态软件、计算机和数据库技术于一体的物联网大气环境监测系统。该系统使用便携式气体检测...为解决传统监测系统无法做到精确、实时地监控各地区大气环境数据的问题,设计了基于SCADA(Supervisory Control And Data Acquisition)系统,集组态软件、计算机和数据库技术于一体的物联网大气环境监测系统。该系统使用便携式气体检测仪作为下位机对大气污染物浓度进行采集,利用组态软件搭建中央监控平台对采集数据进行接收处理与分析。该系统实现了下位机接收数据,服务器存储数据,并能实时进行数据监测及历史数据查询。实验结果显示,该系统既可实时监控监测节点的大气环境变化,又可实现监测节点的历史数据查询,生成历史报表,具有采集数据、存储数据及气体浓度预警的功能。解决了传统监测系统存在的监测范围无法细化、监测数据无法实时更新与发布的问题,为更加方便、实时、高效地监测大气环境提供了技术保障。展开更多
The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Bas...The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Based on the advanced techniques of foreign countries, an improved structure of onboard data handling systems feasible for SST, is proposed. This article concentrated on the development of a Central Management & Control Unit (MCU) based on FPGA and DSP. Through reconfigurating the FPGA and DSP programs, the prototype could perform different tasks. Thus the inheritability of the whole system is improved. The completed dual-channel prototype proves that the system meets all requirements of the MOT. Its high reliability and safety features also meet the requirements under harsh conditions such as mine detection.展开更多
Long-term observations of pulse and arterial blood pressure taken from a patient＇s daily self-control diary have been analyzed in the paper. The diary was kept in the morning and in the evening. It contains regular o...Long-term observations of pulse and arterial blood pressure taken from a patient＇s daily self-control diary have been analyzed in the paper. The diary was kept in the morning and in the evening. It contains regular observational data collected during over 13 years. Statistical estimates of series and their spectral responses were obtained. A difference between the morning and evening series was noted. Spectral harmonics with the period of 7 days was typical of the evening series. The morning series are characterized by a ＂lunar＂ component with the -27.35-day period. The examined series were also compared with the daily series of atmospheric pressure and daily Wolf numbers. Seasonal pulse and arterial pressure pattern and average monthly self-control tabulated data obtained during 13 years are presented in the paper.展开更多
The temperature is an important factor affecting the stability of electron beam orbits.For almost all accelerators,a well-working cooling system and the monitoring system are needed to keep the temperature constant. I...The temperature is an important factor affecting the stability of electron beam orbits.For almost all accelerators,a well-working cooling system and the monitoring system are needed to keep the temperature constant. In this paper,the temperature monitor system for HLS based on EPICS,including its hardware,software and history database,is briefly introduced.It has been indicated that the system satisfies the requirement of machine study and operation.展开更多
文摘为解决传统监测系统无法做到精确、实时地监控各地区大气环境数据的问题,设计了基于SCADA(Supervisory Control And Data Acquisition)系统,集组态软件、计算机和数据库技术于一体的物联网大气环境监测系统。该系统使用便携式气体检测仪作为下位机对大气污染物浓度进行采集,利用组态软件搭建中央监控平台对采集数据进行接收处理与分析。该系统实现了下位机接收数据,服务器存储数据,并能实时进行数据监测及历史数据查询。实验结果显示,该系统既可实时监控监测节点的大气环境变化,又可实现监测节点的历史数据查询,生成历史报表,具有采集数据、存储数据及气体浓度预警的功能。解决了传统监测系统存在的监测范围无法细化、监测数据无法实时更新与发布的问题,为更加方便、实时、高效地监测大气环境提供了技术保障。
基金Project 863-2.5.2.25 supported by the National High Technology Research & Development (863) Program of China
文摘The Main Optical Telescope (MOT) is an important payload of the Space Solar Telescope (SST) with various instruments and observation modes. Its real-time data handling and management and control tasks are arduous. Based on the advanced techniques of foreign countries, an improved structure of onboard data handling systems feasible for SST, is proposed. This article concentrated on the development of a Central Management & Control Unit (MCU) based on FPGA and DSP. Through reconfigurating the FPGA and DSP programs, the prototype could perform different tasks. Thus the inheritability of the whole system is improved. The completed dual-channel prototype proves that the system meets all requirements of the MOT. Its high reliability and safety features also meet the requirements under harsh conditions such as mine detection.
文摘Long-term observations of pulse and arterial blood pressure taken from a patient＇s daily self-control diary have been analyzed in the paper. The diary was kept in the morning and in the evening. It contains regular observational data collected during over 13 years. Statistical estimates of series and their spectral responses were obtained. A difference between the morning and evening series was noted. Spectral harmonics with the period of 7 days was typical of the evening series. The morning series are characterized by a ＂lunar＂ component with the -27.35-day period. The examined series were also compared with the daily series of atmospheric pressure and daily Wolf numbers. Seasonal pulse and arterial pressure pattern and average monthly self-control tabulated data obtained during 13 years are presented in the paper.
文摘The temperature is an important factor affecting the stability of electron beam orbits.For almost all accelerators,a well-working cooling system and the monitoring system are needed to keep the temperature constant. In this paper,the temperature monitor system for HLS based on EPICS,including its hardware,software and history database,is briefly introduced.It has been indicated that the system satisfies the requirement of machine study and operation.
