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Design of Onboard Instrument Based on Virtual Instrument Technology 被引量:2
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作者 TANG Baoping ZHONG Yuanchang QIU Jianwei (Department of Mechatronics,College of Mechanical Engineering,Chongqing University,Chongqing 400030,China 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S2期412-416,共5页
After analyzing and comparing the traditional automobile instrument,the onboard instrument based on virtual instrument technology is designed in this paper.The PC/104 computer was employed as the core processing unit ... After analyzing and comparing the traditional automobile instrument,the onboard instrument based on virtual instrument technology is designed in this paper.The PC/104 computer was employed as the core processing unit of the onbaard in- strument,and the several intelligent data acquisition nodes are set and connected by the CAN bus,through which the nodes can com- municate with the core processing unit.The information of the vehicle’s working condition can be displayed synthetically by adopt- ing virtual instrument technology.When the working condition goes beyond its limit,the system can emit an alarm,record and storage the abnormal condition automatically,and suggest how to deal with the abnormity urgently.The development background and design idea of onboard information system were elaborated in the paper.The software,the hardware architecture and the principle of onboard information system were introduced in detail. 展开更多
关键词 VIRTUAL instrument EMBEDDED TECHNOLOGY PC/104 CAN bus
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Ultra-high Speed and Dual-Channel Data Acquisition Card with IGSPS Based on PXI Bus
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作者 Pengyun Zhang Henan Guo 《Modern Electronic Technology》 2018年第1期22-25,共4页
This paper discusses the chief techniques and design principles of an ultra-high speed and dual-channel data acquisition card based on PXI bus, using FPGA (Field Programmable Gate Array) as logic controller cell. The ... This paper discusses the chief techniques and design principles of an ultra-high speed and dual-channel data acquisition card based on PXI bus, using FPGA (Field Programmable Gate Array) as logic controller cell. The instmment consists of pre-pro- cess circuit, A/D converter, SDRAM (Synchronous Dynamic random access memory), and control circuit integrated in FPGA. It can achieve allowing up to 1000MHz real-time sampling rate. The test result indicates that the system works normally and the system design is successful. 展开更多
关键词 High-speed data ACQUISITION Virtual instrument PXI bus A/D converter FPGA
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Design and Implementation of Hardware Architecture in Ionospheric Oblique Backscattering Sounding System 被引量:3
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作者 SHI Shuzhu ZHAO Zhengyu YANG Guobin ZHANG Yuannong LIU Ruiyuan 《Wuhan University Journal of Natural Sciences》 CAS 2009年第1期53-59,共7页
The ionospheric oblique backscattering sounding system can not only be used to detect the state of the ionosphere and the condition of high frequency channel in real time, but also be used for over-the-horizon soundin... The ionospheric oblique backscattering sounding system can not only be used to detect the state of the ionosphere and the condition of high frequency channel in real time, but also be used for over-the-horizon sounding. Therefore, it has a very high military and civil value. For the characteristics of ionospheric oblique backscattering sounding, such as long sounding distance, wake echo, strong background noise, slow moving target, etc., a hardware platform of ionospheric oblique backscattering sounding system is designed. This platform adopts the technology of software radio and is designed as a new kind of general purpose, modularized, software-based ionosonde that is based on the VXI (Versa module eurocard eXtensions for Instrumentation) bus. This hardware platform has been successfully used in actual ionospheric oblique backscattering sounding, and the experimental results demonstrate that this system can satisfy the requirements. 展开更多
关键词 ionospheric oblique backscattering sounding software radio VXI (Versa module eurocard eXtensions for instrumentation bus
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