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1.
徐甜  高国伟 《计算机测量与控制》2014,22(11):3536-35383542
汽车电子漏电信号具有较强的微弱性和瞬时性。当前的漏电信号检测方法无法避免这种微弱性和瞬时性的特点,导致漏电信号检测准确性较低。设计并实现了一种新的汽车电子漏电信号检测系统。该检测系统由硬件部分和软件部分构成。在硬件设计方面重点介绍了基于PCI1712数据采集卡的漏电信号采集模块和滤波电路;软件部分由LADVIEM和MATLAB仿真软件共同编程完成,重点阐述了小波变换滤波器的设计方法,并给出部分漏电信号采集程序。实验结果表明,该系统能够有效提高汽车电子漏电信号检测的准确性和检测效率。  相似文献   

2.
传统方法在异常导航信号信噪比较低时对小型飞行器异常导航信号的检测效果不理想;设计并实现了一种基于3G-ASCX的小型飞行器异常导航信号检测系统,硬件设计时着重于ASCX传感器模块、异常导航信号检测模块、主控基站模块、3G/GPRS传输模块的研究,3G/GPRS传输模块的硬件设计中,通过功耗低体积小的CC1100完成异常导航信号的收发,传输过程中通过芯片STCI2C5410AD完成电容的平衡转换,选取了MC3486进行电压的转换,最终实现异常信号数据的安全快速传输;最后进行仿真实验,实验结果证明,相比传统系统,所设计系统检测到的小型飞行器异常导航信号同实际测量的异常导航信号具有较高的匹配度,与实际值相比,误差小于1 dB,适合推广使用.  相似文献   

3.
为了防止粉尘发生燃烧或者爆炸,保证火电厂除尘系统的稳定性同时提高火电厂除尘效率,提出了基于S7-300PLC与LabVIEW的火电厂除尘监控系统设计方案。使用S7-300系列PLC为核心控制器,通过对现场传感器采集的数据进行PID闭环控制;利用LabVIEW实现了对除尘器的压力信息、压差信息、温度信息、管道风速和锁气卸灰阀的转速信息的数据采集、处理及分析等功能,并通过通讯模块实现与下位机PLC之间的实时通讯。实验结果表明,该系统设计合理、工作效率高。  相似文献   

4.
针对掘锚连续采煤机中传感器数量较多、且输出信号制式多种多样的特点,设计了一种以ARM处理器为控制核心的掘锚连续采煤机传感器信息采集模块;介绍了该模块硬件电路中信号调理电路、AD转换电路、信号隔离电路和通信接口电路的设计,并给出了该模块的主程序流程。实际应用表明,该模块运行稳定、可靠,有效地实现了掘锚连续采煤机中各传感器数据的实时采集、上传功能。  相似文献   

5.
矿山车辆胎压监测是以无损检测技术为基础,通过研究车辆胎压的实时信号,了解矿山车辆的轮胎气压的变化特性,从而达到矿山车辆安全监控提供依据。描述了以LPC2132为核心构成的胎压的监控装置的研究。通过带有蓝牙的传感器模块采集车辆胎压信号,经过调理电路后进行比较计算,若超过规定值就报警,并将数据发送到车载CAN总线上。在此基础上设计了一套基于蓝牙的胎压监控装置,硬件系统主要由传感器、LPC2132处理器,信号调理电路,蓝牙模块和报警模块等组成。软件系统由固件程序,数据收发模块等构成。  相似文献   

6.
管道泄漏监测与控制技术的研究   总被引:2,自引:0,他引:2  
管道泄漏监测与控制技术已经成为管道安全运行的关键问题。本文通过对泄漏信号识别、泄漏点精确定位以及管线运行数据的实时传输和科学管理等关键技术的分析,提出了基于分布式光纤传感器的管道泄漏实时监测系统设计方案。对泄漏点的定位技术提出了用神经网络实现泄漏点定位的策略。对监测信号的数据采集,设计了以FPGA为核心的数据采集系统,通过实验数据采集系统工作稳定,达到了设计要求。  相似文献   

7.
设计了基于P89LPC9408单片机的风/光互补电站数据监测系统,该系统可以实现采集并处理来自太阳能光伏电池输出、风机输出、蓄电池充电和逆变器输出的电流和电压信号,以及温度传感器、风向和风速传感器等的信号,并通过RS-485与上位机通信,实时对电站进行监控。  相似文献   

8.
喷嘴是发动机推进室的重要组成元件,通过研究其工作原理,根据流量特性检测需求,设计了一套集硬件线路设计和工艺采集于一体的喷嘴试验台测控系统;针对系统电路进行改造,利用信号传输特性设计了电流串联回路,解决了传感器重复使用的问题;建立以太网通信,利用Labview创建共享变量调用PLC数据,设计了阶梯式双调压采集系统,提高了试验工况和参数采集的精度;实验表明,系统可以通过上位机界面实现信号的实时采集以及数据处理、记录与分析等功能,试验工况误差达到1%。  相似文献   

9.
雷达视频回波信号的高速采集与回放显示   总被引:3,自引:0,他引:3  
润涵  罗晓平 《测控技术》1999,18(12):39-41
介绍了针对雷达视频回波信号的高速采集系统的设计,包括硬件设计原理及组成框图,软件设计思想及实现流程。文中给出了解决大容量数据的计算机硬件盘实时存储问题的方案,同时对数据回放显示软件平台的功能也作了较为详细的介绍。  相似文献   

10.
在传统MEMS加速度传感器标定设备的基础上,设计了一套基于以太网传输的20路传感器信号自动采集系统.W5300芯片作为硬件采集卡的核心,Visual Studio+QT作为上住机软件的开发平台.传感器产生的电压信号经过A/D采样,经由以太网收发模块将采集的数据通过网线传输给计算机.系统具有多通道连续采集、参数设置、数据存储、多路实时显示波形的功能.简化了数据采集过程,解决了因数据拥堵导致的数据丢失的问题,提高了标定测试采集效率.  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

18.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

19.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

20.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

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