Achieving accurate navigation information by integrating multiple sensors is key to the safe operation of land vehicles in global navigation satellite system(GNSS)-denied environment.However,current multi-sensor fusio...Achieving accurate navigation information by integrating multiple sensors is key to the safe operation of land vehicles in global navigation satellite system(GNSS)-denied environment.However,current multi-sensor fusion methods are based on stovepipe architecture,which is optimized with custom fusion strategy for specific sensors.Seeking to develop adaptable navigation that allows rapid integration of any combination of sensors to obtain robust and high-precision navigation solutions in GNSS-denied environment,we propose a generic plug-and-play fusion strategy to estimate land vehicle states.The proposed strategy can handle different sensors in a plug-and-play manner as sensors are abstracted and represented by generic models,which allows rapid reconfiguration whenever a sensor signal is additional or lost during operation.Relative estimations are fused with absolute sensors based on improved factor graph,which includes sensors’error parameters in the non-linear optimization process to conduct sensor online calibration.We evaluate the performance of our approach using a land vehicle equipped with a global positioning system(GPS)receiver as well as inertial measurement unit(IMU),camera,wireless sensor and odometer.GPS is not integrated into the system but treated as ground truth.Results are compared with the most common filtering-based fusion algorithm.It shows that our strategy can process low-quality input sources in a plug-and-play and robust manner and its performance outperforms filtering-based method in GNSS-denied environment.展开更多
LXI网络仪器是以LXI(LAN e Xtension for Instrumentation)作为仪器内部总线,由不同功能的LXI模块组成的新型仪器。LXI模块本身带有自己的处理器、LAN接口、电源和触发输入,相较于传统仪器,LXI网络仪器具有组建灵活、高效、模块化等特点...LXI网络仪器是以LXI(LAN e Xtension for Instrumentation)作为仪器内部总线,由不同功能的LXI模块组成的新型仪器。LXI模块本身带有自己的处理器、LAN接口、电源和触发输入,相较于传统仪器,LXI网络仪器具有组建灵活、高效、模块化等特点,并且具有较强的扩展性和开放性,允许用户灵活地选用不同厂商和不同类别的仪器设备,而不必仅限于单一厂商和单一类别的仪器设备来构建测控系统。在测量过程中实现仪器模块的"即插即用"尤为重要。将一般系统中的"即插即用"机制与DHCP动态主机配置协议相结合,提出基于LXI网络仪器的自动发现与配置方案。该方案可实现仪器代理模块和测量模块的自动发现、自动申报、自动加载和自动配置;通过在LXI网络仪器平台中的仿真与测量,运行效果良好,设计方案可行。展开更多
This paper focus on the problems with smart substations such as long period of construction and design, difficulties of debugging and maintenance. According to the whole process of designing, construction, operation a...This paper focus on the problems with smart substations such as long period of construction and design, difficulties of debugging and maintenance. According to the whole process of designing, construction, operation and maintenance of smart substations and characteristics of IED, the plug and play technology on the whole life cycle of a smart substation is proposed. Standardized virtual terminal description is used in matching the signals, standardized definitions and order of virtual terminal is used in connecting the signals, and management server is used in managing IED failures and backup. The plug and play technology can effectively improve the efficiency of design, construction, operation and maintenance of smart substations.展开更多
The home network technologies are taking advantage of the increasingly promising market prospect, thank to the popularity of digital home appliances. To enable control and data transfer among interconnected home netwo...The home network technologies are taking advantage of the increasingly promising market prospect, thank to the popularity of digital home appliances. To enable control and data transfer among interconnected home network devices, it is necessary to adopt the Universal Plug and Play (UPnP) technology. This technology leverages the Internet technical standards including the Internet Protocol (IP), the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), the Hypertext Transfer Protocol (HTTP), and the Extensible Markup Language (XML) to provide the automatic across-platform service discovery and the remote control. In addition to the control and the data transfer among networked devices, the UPnP provides the flexible and robust service discovery ability to change the complex network device drive into a simple remote network control.展开更多
The key purpose of a smart home system is to provide people with a better indoor life experience using the technology of Internet of Things. However,there are some limitations which make the current smart home system ...The key purpose of a smart home system is to provide people with a better indoor life experience using the technology of Internet of Things. However,there are some limitations which make the current smart home system impractical,such as high cost,complex installation,poor flexibility and maintainability. In this paper,a novel plug-configure-play ZigB ee-based smart home system is proposed to provide repeatable use and improve flexibility and maintainability with the reductions of cost and complexity,which can be customized and reconfigured without redevelopment. In this system,new sensors can be flexibly added through different interfaces on the ZigB ee nodes and the sensor network layer is transparent to the users. Therefore,by using our method,users can customize and use the smart home system simply by configuring the sensors information via software on the application layer.展开更多
The significance of U values in buildings’ shell energy performance is well known in the scientific community as well as in the construction sector. In addition, conducting a validation of the energy performance of a...The significance of U values in buildings’ shell energy performance is well known in the scientific community as well as in the construction sector. In addition, conducting a validation of the energy performance of a building often requires the knowledge of real U value figures, since their theoretical peers may deviate considerably from the real ones. The theoretical U value of a shell element may be calculated using complex material and surface related information, while its practical validation is conducted usually by equipment that requires tedious installation and constant contact with the examined element. Aim of this paper is to introduce an easily deployed, plug and play, contact less technology, able to provide a reasonable approximation of the building element U value and its variation with external air speed as well as an accurate estimation of the U value change in case of a shell (wall or window) retrofit.展开更多
2007年9月17日，凌华科技协同欧洲两大Computer-on-Module厂商康佳特、MSC，筹组PCI工业计算机制造商组织（简称PICMG协会）辖属的COM Express Plug＆Play小组委员会，三家公司联合提出的“COM Express Plug and Play Design Guide”规...2007年9月17日，凌华科技协同欧洲两大Computer-on-Module厂商康佳特、MSC，筹组PCI工业计算机制造商组织（简称PICMG协会）辖属的COM Express Plug＆Play小组委员会，三家公司联合提出的“COM Express Plug and Play Design Guide”规范已纳八正式讨论章程，同时由凌华科技CTO Jeff Munch担任COM Express Plug＆Play小组委员会临时主席，开放所有PICMG会员申请加八该小组委员会。展开更多
基金partially supported by the National Natural Science Foundation of China(No. 61703207)the Jiangsu Provincial Natural Science Founda- tion of China(No. BK20170801)+2 种基金the Aeronautical Science Foundation of China(No. 2017ZC52017)the Jiangsu Provincial SixTalent Peaks(No. 2015-XXRJ-005)the Jiangsu Province Qing Lan Project
文摘Achieving accurate navigation information by integrating multiple sensors is key to the safe operation of land vehicles in global navigation satellite system(GNSS)-denied environment.However,current multi-sensor fusion methods are based on stovepipe architecture,which is optimized with custom fusion strategy for specific sensors.Seeking to develop adaptable navigation that allows rapid integration of any combination of sensors to obtain robust and high-precision navigation solutions in GNSS-denied environment,we propose a generic plug-and-play fusion strategy to estimate land vehicle states.The proposed strategy can handle different sensors in a plug-and-play manner as sensors are abstracted and represented by generic models,which allows rapid reconfiguration whenever a sensor signal is additional or lost during operation.Relative estimations are fused with absolute sensors based on improved factor graph,which includes sensors’error parameters in the non-linear optimization process to conduct sensor online calibration.We evaluate the performance of our approach using a land vehicle equipped with a global positioning system(GPS)receiver as well as inertial measurement unit(IMU),camera,wireless sensor and odometer.GPS is not integrated into the system but treated as ground truth.Results are compared with the most common filtering-based fusion algorithm.It shows that our strategy can process low-quality input sources in a plug-and-play and robust manner and its performance outperforms filtering-based method in GNSS-denied environment.
文摘LXI网络仪器是以LXI(LAN e Xtension for Instrumentation)作为仪器内部总线,由不同功能的LXI模块组成的新型仪器。LXI模块本身带有自己的处理器、LAN接口、电源和触发输入,相较于传统仪器,LXI网络仪器具有组建灵活、高效、模块化等特点,并且具有较强的扩展性和开放性,允许用户灵活地选用不同厂商和不同类别的仪器设备,而不必仅限于单一厂商和单一类别的仪器设备来构建测控系统。在测量过程中实现仪器模块的"即插即用"尤为重要。将一般系统中的"即插即用"机制与DHCP动态主机配置协议相结合,提出基于LXI网络仪器的自动发现与配置方案。该方案可实现仪器代理模块和测量模块的自动发现、自动申报、自动加载和自动配置;通过在LXI网络仪器平台中的仿真与测量,运行效果良好,设计方案可行。
文摘This paper focus on the problems with smart substations such as long period of construction and design, difficulties of debugging and maintenance. According to the whole process of designing, construction, operation and maintenance of smart substations and characteristics of IED, the plug and play technology on the whole life cycle of a smart substation is proposed. Standardized virtual terminal description is used in matching the signals, standardized definitions and order of virtual terminal is used in connecting the signals, and management server is used in managing IED failures and backup. The plug and play technology can effectively improve the efficiency of design, construction, operation and maintenance of smart substations.
文摘The home network technologies are taking advantage of the increasingly promising market prospect, thank to the popularity of digital home appliances. To enable control and data transfer among interconnected home network devices, it is necessary to adopt the Universal Plug and Play (UPnP) technology. This technology leverages the Internet technical standards including the Internet Protocol (IP), the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), the Hypertext Transfer Protocol (HTTP), and the Extensible Markup Language (XML) to provide the automatic across-platform service discovery and the remote control. In addition to the control and the data transfer among networked devices, the UPnP provides the flexible and robust service discovery ability to change the complex network device drive into a simple remote network control.
基金Supported by the National Natural Science Foundation oi China(61175096,61303245,61173132)Specialized Fund for Joint Building Program of Beijing Municipal Education Commission
文摘The key purpose of a smart home system is to provide people with a better indoor life experience using the technology of Internet of Things. However,there are some limitations which make the current smart home system impractical,such as high cost,complex installation,poor flexibility and maintainability. In this paper,a novel plug-configure-play ZigB ee-based smart home system is proposed to provide repeatable use and improve flexibility and maintainability with the reductions of cost and complexity,which can be customized and reconfigured without redevelopment. In this system,new sensors can be flexibly added through different interfaces on the ZigB ee nodes and the sensor network layer is transparent to the users. Therefore,by using our method,users can customize and use the smart home system simply by configuring the sensors information via software on the application layer.
文摘The significance of U values in buildings’ shell energy performance is well known in the scientific community as well as in the construction sector. In addition, conducting a validation of the energy performance of a building often requires the knowledge of real U value figures, since their theoretical peers may deviate considerably from the real ones. The theoretical U value of a shell element may be calculated using complex material and surface related information, while its practical validation is conducted usually by equipment that requires tedious installation and constant contact with the examined element. Aim of this paper is to introduce an easily deployed, plug and play, contact less technology, able to provide a reasonable approximation of the building element U value and its variation with external air speed as well as an accurate estimation of the U value change in case of a shell (wall or window) retrofit.
文摘2007年9月17日，凌华科技协同欧洲两大Computer-on-Module厂商康佳特、MSC，筹组PCI工业计算机制造商组织（简称PICMG协会）辖属的COM Express Plug＆Play小组委员会，三家公司联合提出的“COM Express Plug and Play Design Guide”规范已纳八正式讨论章程，同时由凌华科技CTO Jeff Munch担任COM Express Plug＆Play小组委员会临时主席，开放所有PICMG会员申请加八该小组委员会。
