A fully automated approach for detecting land use/cover change using remote sensing data, GIS data, GPS data is presented. The integrating raster with vector methods of updating the basic land use/land cover map based...A fully automated approach for detecting land use/cover change using remote sensing data, GIS data, GPS data is presented. The integrating raster with vector methods of updating the basic land use/land cover map based on 3S technology is becoming one of the most important developing directions in 3S application fields, land-use and cover change fields over the world. It has been successful applied in two tasks of the Ministry of Land and Resources of China, and takes some benefit.展开更多
Based on the characteristics of wireless communication technology and Wireless Sensor Network, this paper studies the well site environmental monitoring system. The relevant hardware and software of the system are des...Based on the characteristics of wireless communication technology and Wireless Sensor Network, this paper studies the well site environmental monitoring system. The relevant hardware and software of the system are designed to monitor the well site environment, thus preventing downhole accidents. The system uses the wireless ZigBee technology as the transmission mode, and combines the virtual instrument technology to design the upper machine interface. The test results show that the system can monitor the outdoor environment in real time. When the environmental parameters exceed the set value, the corresponding location of the LabVIEW interface will send an alarm.展开更多
This paper describes the design and implementation of an intelligent computer-aided design (ICAD) system for hydraulic circuits of pressing machines. The CAD system is developed based on the object-oriented approach. ...This paper describes the design and implementation of an intelligent computer-aided design (ICAD) system for hydraulic circuits of pressing machines. The CAD system is developed based on the object-oriented approach. The application domain of hydraulic presses has been studied thoroughly. The engineering data and the design knowledge are organized in an object-oriented database. A case study has been selected to illustrate the usefulness of the object-oriented CAD system in real applications.展开更多
为了实现风电实验台监控系统的实时通信,提出了一种基于LabVIEW和OPC(OLE For Process Control)技术的通信方法。在分析了OPC原理和LabVIEW的DataSocket技术原理后,设计了基于风电监控的通信系统,由LabVIEW和Rockwell公司的AB-PLC、Rsl...为了实现风电实验台监控系统的实时通信,提出了一种基于LabVIEW和OPC(OLE For Process Control)技术的通信方法。在分析了OPC原理和LabVIEW的DataSocket技术原理后,设计了基于风电监控的通信系统,由LabVIEW和Rockwell公司的AB-PLC、Rslinx组成。通过对AB-PLC的硬件配置、Rslinx OPC服务器的配置以及LabVIEW共享变量的应用和框图编程,实现了LabVIEW对风电机数据的实时监测。结果表明通过Rslinx OPC服务器,可以简便、有效地在LabVIEW与AB-PLC之间交换数据,并且共享变量的应用,增强了监控系统的可靠性。展开更多
文摘A fully automated approach for detecting land use/cover change using remote sensing data, GIS data, GPS data is presented. The integrating raster with vector methods of updating the basic land use/land cover map based on 3S technology is becoming one of the most important developing directions in 3S application fields, land-use and cover change fields over the world. It has been successful applied in two tasks of the Ministry of Land and Resources of China, and takes some benefit.
文摘Based on the characteristics of wireless communication technology and Wireless Sensor Network, this paper studies the well site environmental monitoring system. The relevant hardware and software of the system are designed to monitor the well site environment, thus preventing downhole accidents. The system uses the wireless ZigBee technology as the transmission mode, and combines the virtual instrument technology to design the upper machine interface. The test results show that the system can monitor the outdoor environment in real time. When the environmental parameters exceed the set value, the corresponding location of the LabVIEW interface will send an alarm.
文摘This paper describes the design and implementation of an intelligent computer-aided design (ICAD) system for hydraulic circuits of pressing machines. The CAD system is developed based on the object-oriented approach. The application domain of hydraulic presses has been studied thoroughly. The engineering data and the design knowledge are organized in an object-oriented database. A case study has been selected to illustrate the usefulness of the object-oriented CAD system in real applications.
文摘为了实现风电实验台监控系统的实时通信,提出了一种基于LabVIEW和OPC(OLE For Process Control)技术的通信方法。在分析了OPC原理和LabVIEW的DataSocket技术原理后,设计了基于风电监控的通信系统,由LabVIEW和Rockwell公司的AB-PLC、Rslinx组成。通过对AB-PLC的硬件配置、Rslinx OPC服务器的配置以及LabVIEW共享变量的应用和框图编程,实现了LabVIEW对风电机数据的实时监测。结果表明通过Rslinx OPC服务器,可以简便、有效地在LabVIEW与AB-PLC之间交换数据,并且共享变量的应用,增强了监控系统的可靠性。
