毕业论文 Labview 电池参数

发布时间 : 星期六 文章毕业论文 Labview 电池参数更新完毕开始阅读

浙江科技学院毕业设计(论文)

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2.1.10 温度特性:环境温度是影响电池性能的重要因素。实际上电池也有以工作温度状态分类的,如铅酸电池在常温下工作,而钠硫电池需在高温下才能工作。电池对环境温度及温度升高的情况都较敏感。大部分都要求在较狭窄的温度范围内工作,才能保持较高的性能,否则就会损坏。因此,蓄电池在电动汽车上的安装使用,还需注意其环境温度和温升状态的调节控制。 2.1.11 CA(启动电流):指在零摄氏度时电瓶放电30秒,电瓶端电压为7.2伏以上所能输出的安培数。启动电流是指电气设备(感性负载)在刚启动时的冲击电流,是电极或者感性负载通电的瞬间到运行平稳的短暂时间内的电流的变化量。这个电流一般是额定电流的4-7倍,为了线路的运行安全及其他设备的正常运行,大功率的发动机必须加装启动设备,以降低启动电流。 冲击电流是指输入电压按规定时间间隔接通或断开 时,输入电流达到稳定状态前所通过的最大瞬间电流。常见的交流电机的启动方法有:①直接启动②串电阻启动③自耦变压启动④星三角减压启动⑤变频启动

2.1.12 CCA(冷启动电流):指在零下18摄氏度时电瓶放电30秒,电瓶端电压为7.2伏以上所能输出的安培数。

解决的主要问题是如何运用Labview来检测电池的各种参数,其中以电池电能为主。

2.2 结论

本次课题涉及研究的范围很广,因为时间有限,所以这次研究的主要方向还是以设计出一套可以测量出电池电能的程序为主。

Labview功能十分强大,模块十分多,不是一两天所能够熟悉了解的,尤其是对于初学者。当然,在足够熟悉了解的前提下,也是能够很便捷的设计出具备各种功能的程序。它不像C语言那样抽象,可以说它的许多模块很形象,很多时候往往只要看一眼,外行的人都有可能知道这些模块的大致功能。

本次课题,主要实现测量出干电池的电能。具体的说就是:用干电池、电阻、电压表、电流表等硬件连接一个基本的电路,然后通过DAQmx把测量到的电压、电流等数据输入到电脑程序中,通过我设计出的程序测量计算出干电池所消耗的电能。注意:这里根据导师的要求,我的程序要实现的功能有(1)可以测量出干电池的总电能,并且把曲线图显示出来;(2)可以测量出每毫秒的电能,即随时暂停随时显示出消耗的电能。这也是这个程序的创新点。这项工作听起来似乎很容易,实则不然,尤其是对于那些对于Labview不够熟悉的人来说。因为光是熟悉这个软件的各种模块便需要花费大量的时间,其它的就更不用说了,还没有开始变遇到这么大的一个阻碍,可想而知这项工作有多费事。幸好,到最后,我还是坚持下来了,也取得了一定的成就。

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浙江科技学院毕业设计(论文)

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3 致谢

经过了这么久的努力,终于完成了这次的课题。从一个几乎对于Labview可以说是初学者我到最后能够及时的完成任务,我不得不感谢一些人。首先,我的导师——李曙光。每隔一段时间,当我遇到瓶颈的时候,我总是会去麻烦导师,有时候我自己都会感到不好意思,但是,导师他每次总是不厌其烦的知道我,把我的困惑一个个的解决,从而使我的进度一次次的加快。每一次去的时候,导师都会放下手上所有的工作,专心指导我,而且,一指导就会花费好几个小时,有时候不懂的地方,导师会不断的重复讲解,换多种方式讲解,使我的思路不断清晰,目标不断明确。有时候,实在无法理解的时候,导师也会动手小操作一下,举个例子什么的,总之,每一次都会让我真正的理解以后才会停止,十分的负责。所以,我超级感谢我的导师!其次,我也感谢我的同学。有时候碰到一些小问题,问导师的话有时候他不在,所以我只好直接找他们。但是,他们每一次都会认真的帮助我,也使我少走了不少弯路,感谢。

终于完成了这次的课题,我感到很开心,虽然过程当中枯燥乏味,但是当这一切都结束的时候,我感到十分的满足!

4 参考文献

4.1 外文翻译

As with C and BASIC, programming system LabVIEW is general, there is a complete any of the huge task of programming functions. LabVIEW functionsincluding data acquisition, GPIB, serial port control, data analysis, data display and data storage, etc.. LabVIEW also has the traditional debugging tools, such as setting breakpoints, to display animated data and subroutine (VI) results, stepand so on, debugging convenient program. LabVIEW (Laboratory VirtualInstrument Engineering Workbench) is a graphical programming language withicon instead of lines of text to create applications. The traditional text programming language according to the statement and the instruction sequencedetermines the sequence of execution, while the LabVIEW uses data flow programming, data flow between

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浙江科技学院毕业设计(论文)

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the nodes of the diagram determines theexecution order of VI and function. VI refers to the virtual instrument, is a program module of LabVIEW. LabVIEW provides the look and traditional instruments (such as oscilloscope, multimeter) similar to controls, can be used to easily create userinterface. The user interface is called the front panel in LabVIEW. The use of icons and connection, can be controlled by programming objects on the front panel. This is the graphical source code, also known as G code. LabVIEW graphical source code in a way similar to the flow chart, it is also known as theblock diagram of the program code. Features: use as far as possible the general hardware, differences between the various instruments mainly software. Can give full play to the computer capacity, powerful data processing function, can create a more powerful instrument. Users can according to their own needs to defineand manufacturing all kinds of instruments. The future of virtual instrument based on another problem is connected interconnection standard instrument andcomputer. Is currently using more IEEE488 or GPIB protocol. Future instrumentsshould also be network. LabVIEW (Laboratory Virtual instrument EngineeringWorkbench) is a graphical programming language development environment, to accept it is widely industry, academia and research laboratories, as a standard data acquisition and instrument control software. LabVIEW integrates with all the functions of GPIB, VXI, RS-232 and meet the RS-485 protocol of the hardwareand data acquisition card communication. It also features a built-in library functions for TCP/IP, ActiveX and other software standards. This is a powerful and flexible software. It can be used to facilitate the establishment of virtual instrument of their own, the graphical interface makes programming and use of the process are lively and interesting. Graphical programming language, also known as the \language. Use this kind of language programming, basicallydon't write code, replace sb. is a flow chart or diagram. It is possible using thefamiliar technicians, engineers, scientists, in terms of icons and concepts,therefore, LabVIEW is an end-user tool. It can enhance your ability to build their own scientific and engineering system, provides a convenient way to instrument programming and data acquisition system. Principle of using it for research,design,

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浙江科技学院毕业设计(论文)

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test and implement instrumentation systems, can greatly improve work efficiency. Using LabVIEW, can generate stand-alone executable file, it is a true 32 bit /64 compiler. Like many important software, LabVIEW provides severalversions of Windows, UNIX, Linux, Macintosh. It is a convenient, hardware, can be changed by software, can realize different instrumentation function, is very convenient, is equivalent to the software or hardware! Now the graphic is mainlythe upper system, now has developed a graphical programming system(embedded system, 32 bit and support can be expanded), continuous improvement .

与 C 和BASIC 一样,LabVIEW也是通用的编程系统,有一个完成任何编程任务的庞大函数库。LabVIEW的函数库包括数据采集、GPIB、串口控制、数据分析、数据显示及数据存储,等等。LabVIEW也有传统的程序调试工具,如设置断点、以动画方式显示数据及其子程序(子VI)的结果、单步执行等等,便于程序的调试。LabVIEW(Laboratory Virtual Instrument Engineering Workbench)是一种用图标代替文本行创建应用程序的图形化编程语言。传统文本编程语言根据语句和指令的先后顺序决定程序执行顺序,而 LabVIEW 则采用数据流编程方式,程序框图中节点之间的数据流向决定了VI及函数的执行顺序。VI指虚拟仪器,是 LabVIEW 的程序模块。LabVIEW提供很多外观与传统仪器(如示波器、万用表)类似的控件,可用来方便地创建用户界面。用户界面在 LabVIEW 中被称为前面板。使用图标和连线,可以通过编程对前面板上的对象进行控制。这就是图形化源代码,又称G代码。LabVIEW 的图形化源代码在某种程度上类似于流程图,因此又被称作程序框图代码。特点:尽可能采用了通用的硬件,各种仪器的差异主要是软件。可充分发挥计算机的能力,有强大的数据处理功能,可以创造出功能更强的仪器。用户可以根据自己的需要定义和制造各种仪器。未来虚拟仪器研究的另一个问题是各种标准仪器的互连及与计算机的连接。目前使用较多的是IEEE488 或 GPIB协议。未来的仪器也应当是网络化的。LabVIEW(Laboratory Virtual instrument Engineering Workbench)是一种图形化的编程语言的开发环境,它广泛地被工业界、学术界和研究实验室所接受,视为一个标准的数据采集和仪器控制软件。LabVIEW 集成了与满足 GPIB、VXI、RS-232和 RS-485 协议的硬件及数据采集卡通讯的全部功能。它还内置了便于应用TCP/IP、ActiveX等软件标准的库函数。这是一个功能强大且灵活的软件。利用它可以方便地建立自己的虚拟仪器,其图形化的界面使得编程及使用过程都生动有趣。图形化的程序语言,又称为 “G” 语言。使用这种语言编程时,基本上不写程序代码,取而代之的是流程图

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