在航電系統維護過程中,為解決定位故障的效率和降低維修成本等問題,提出了基于ICD(Interface Control Document,接口控制文件)的1553B總線的信息監控系統模型。該系統運用數據采集卡對總線中傳輸的信號有無失真、偏差等電氣特性進行檢測,并使用1553B通訊卡通過測控軟件LabWindows/CVI編程與ICD數據庫的動態鏈接,實現總線信息的解析和故障的判斷。與傳統的維護過程相比,這種模型能夠從信號的電氣特性以及信息的解析等全方位的去檢測判斷故障的來源,并且能夠廣泛在其他1553B總線系統內擴展應用。驗證表明該監控系統可以對總線信息進行快速有效地監測分析,能滿足應用需求。
Abstract: In the process of avionics system maintenance, to solve the problems such as improving the efficiency of fast orientation to troubles and reducing maintenance cost, system of 1553B bus information monitor model based on ICD was proposed. The system observed whether the data which transmitted on the bus appear distortion and deviation by using data acquisition card. And using 1553B communication card programming of the measure software LabWindows/CVI and the dynamic linking of ICD database, message analysis and fault estimation could be realized. Compared with traditional maintenance, this model can all-dimensionally detect and analyze the source of faults from both electrical characteristics of the signal and message analysis, and it can be widely applied in the other 1553B system. Experiment shown that this monitor system can effectively detect and analyze the bus message and can meet the application requirements.
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1 Communication Protocol (Computer as master)
The communication protocol describes here allows your computer to access 4096 internal registers (W0000-W4095) and 1024 internal relays (B0000-B1023) in the Workstation..
1.1 Request Message Format
Request message is a command message to be sent from the computer to the Workstation. The data structure of request message is shown below. Note that numbers are always in hexadecimal form and converted into ASCII characters. For example, Workstation unit number 14 will appear in the message as character 0(30h) followed by character E(45h); a BCC of 5Ah will appear in the message as character 5(35h) followed by character A(41h).
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SR-tree is an index structure for high-dimensional nearest neighbor queries,C++ sourcecode. SR-tree outperforms the R*-tree and the SS-tree especially for high-dimensional and non-uniform data which are likely to appear in the actual image / video applications.
隨機性發生器、冒泡分類和混洗一組12張牌的演示程序。
Demonstrates the use of a randomizer, bubble-sort and an array to "shuffle" a deck of 12 cards. I put it here for those of you who are trying to figure out how to shuffle with a randomizer without having the same card appear two-or-more times.
“抓住它”小遊戲,a applet that plays a game called Catch the Crearure. have the crature appear at a ramdom lacation for a random durarion. the goal is to catch the creature by pressing the moouse button while the mouce pointer is on the creature
This companion disc contains the source code for the sample
programs presented in INSIDE VISUAL C++ 5.0, as well as pre-
compiled copies of the programs.
To copy all of the sample code onto your hard disk, run the
SETUP.EXE program and follow the instructions that appear on
the screen. The sample code requires about 10 MB of hard disk
space.
That step-by-step electric motor the step-by-step electric motor assembler program , comparison have been resolved well gets it in gear is able to appear to see dead phenomenon
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware. It consists of a loadable kernel module (kvm.ko) and a userspace component.
Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc.
The kernel component of KVM is included in mainline Linux, and will appear in Linux 2.6.20.
KVM is open source software.