排序方式: 共有75条查询结果,搜索用时 125 毫秒
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利用Delphi7和Jupiter 021 OEM板,开发一套GPS数据采集软件.该软件能够动态显示各可视卫星的卫星号、信号强度及信号的空间分布;以北纬、东经、海拔高度表示的三维定位结果及描述几何拓扑误差的HDOP、PDOP、VDOP等误差放大因子;生成动态存储NMEA-0183原始语句及其数据提取结果的文件,为今后分析接收机性能,确定GPS数据采集时段、采集位置,进行定位结果的优化处理等方面提供数据. 相似文献
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Zhuo Chen 《Maritime Policy and Management》2017,44(5):537-550
This study identified a set of applicable and practical green performance evaluation indices for Chinese ports using the Delphi technique. The research was conducted by targeting three representative Chinese ports in Eastern China: the Shanghai Port, Ningbo Port, and Qingdao Port. An effective expert panel was structured with direct stakeholders related to green performance, which was based on a sufficient consideration of the unique and the special decision-making system for Chinese ports. Twenty-one green performance indices in six dimensions (i.e. liquid pollution management, air pollution management, noise control, low carbon regulations and energy savings, marine biology preservation, and organization and management) were eventually identified through three rounds of iterations. The identified green performance indices for Chinese ports are highly consistent with the Chinese Government’s environmental policies. Compared with European ports, the green port performance indicators in China are not as comprehensive. The indicators that are strictly consistent with national macro policies and the factors that are more easily seen, heard, and felt were perceived to be more important. From an academic perspective, this study offers a new approach for system establishment and green practice criteria exploration and thus provides a significant basis for further green port studies. 相似文献
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介绍了一种以Delphi开发的车道指示器控件,这一控件模拟了现实智能交通系统中的车道指示器,从而为高效开发交通监控系统提供了便利.对该控件的设计思路和实现方法做了全面的阐述,介绍了使用方法,并就可改进方面作了说明. 相似文献
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PC机能够从AIS设备接收信息进行处理与存储。AIS信息是以NMEA语句的形式出现的,主要有13种,符合IEC61162-1和ITU1371-1协议。分析信息的构成和解析信息得到数据的方法,并使用Delphi多线程的技术完成对AIS信息的解析,数据存储于SQL Server2000数据库中,满足了长期数据存储的需要。 相似文献
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通过在Delphi里嵌套OpenGL辅助开发,实现对传统机械仪表罗盘的模拟,结果表明能够很好地模拟罗盘在舰船航行时的各种性能。 相似文献
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继电器微机测试系统的设计与研究 总被引:4,自引:0,他引:4
介绍了继电器微机洲试系统的总体构成及激励源的设计、动态链接库(DLL)的使用等软硬件的设计方法和设计过程中所涉及到的相关概念.其中还就继电器输出动作时间的测试、高精度定时器控件的使用、数据的实时采集和处理、公共数据模块在设计中的使用等问题进行了研究. 相似文献