Network Virtual Instrument Technology And Its In Harbor Facilities Long-distance Examination Application

With the port in the status of the increasingly prominent international transport, port operations increasingly busy, port equipment prolonged work in a high-intensity situations, then the port equipment maintenance and testing is the normal work must be prolonged link. With large-scale, integrated, intelligent for port facilities, and the requirements for equipment testing will be increasingly high.Traditional testing mostly through the acquisition of equipment to the scene signals, and then a comprehensive analysis concluded that although increased reliability testing, but many are operating on-site staff inconvenient to, or simply can not achieve in normal field data collection, and also to the increased testing costs, and security is also an issue worthy of consideration, which would require the re-establishment of a testing methodology, that through networking virtual instrument testing system to achieve the same function.Virtual instrument to facilitate the use of traditional instrumentation hardware modules need to achieve completion of the three separate functions : data collection, data analysis and graphics showed. Networking virtual instrument is to achieve long-range measurements of the network, a network monitoring key technologies, the general characteristics is network resources such as, virtual instrumentation, external equipment, the test points in the network, and databases, sharing resources, common task testing completed. Use networking virtual instrument, people can obtain information or data measurements, or use it for remote monitoring, data collection and fault detection, warning. The article targeted chosen port equipment vibration signals to achieve network distance measurements.This article is divided into three main parts. The first part of the major internal and external analysis and research on the technical characteristics of network test systems, from automatic testing systems, virtual instrument, and commonly used hardware system uses many aspects such as the structure of the in-depth study;The second part is the focus of the article, revolved around the development of a longrange virtual test system to a detailed exposition of a network of virtual instrumentation programme, and to optimize the various programmes conducted more from the overall framework of the system is described in detail the composition of the system hardware, equipment needs and the technology-driven apparatus;the third part is centered on the development of systems to discuss and research, focusing on network-based virtual instruments, remote test system to achieve system respectively on the technical requirements for achieving development system functions done in detail.