md3000生物信号采集系统.pdf

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1、一、IntroductionMD3000 biological signal acquisition and processing system is packed with many experts and professors for many years thedevelopment of the PC biology signal acquisition and processing system experience and the introduction of another high-techproducts,to replace the traditional recorde

2、r,oscilloscope and stimulator experimental apparatus used in physiology,pharmacologyand pathophysiology of colleges in teaching and research laboratory.Meanwhile,MD3000 software can provide easy operation,goodobservation,to deal with a powerful experimental tool for the majority of students,experime

3、nts researchers and teachers in the stablerunning under Windows 2(XX)/XP by using NT technology.二、MD3000 system introduce(一)System components and basic principalAccording to the characteristics of the electrophysiological experiments,MD3000 biology signal acquisition and processingsystem is a combin

4、ation of good quality of traditional instruments and powerful processing capabilities of computers design system.MD3000 is the multi-CPU parallel set of signal amplification,data acquisition,display,storage,processing and output of theexperimental system.It is composed from two parts of the hardware

5、 and software.Hardware s mainly task that it is conditioning andamplification a variety of biological signals(such as:ECG,EMG EEG)and non-electric biological signal(such as:blood pressure,tension,respiration),and thus the signal analog/digital(A/D)convert to make it into the computer.However,softwar

6、e is to completethe control system and biological signal has been digitized display,recording,storage,processing,and print output.(2)Componentsdiagram:(3)MD3000 is a multi-CPU parallel work of the biological signal acquisition and processing system,the basic principal diagram isAccording to the acqu

7、isition system principal diagram,suggesting that we should consider the following when doing theexperiments:(1).Whether the need to stimulate?(control one chip machine 1,set the stimulation mode and parameters)(2).Whether the need for sensor?(according to the non-electrical signals or electrical sig

8、nals to determine)(3).Direct current(DC)or alternating current(AC)input?(select the lower bound frequency by the software)(4).Tlic magnification?(control one chip machine 2,set the magnification)(5).On the speed of analog signal sampling?(control one chip machine 2,set the sampling interval)(6).Whet

9、her the data is digital filtering?(the greater interference with the digital filtering to obtain the better curve.)(7).Which is selected mapping way,a recorder or oscilloscope?If the continuous oscilloscope use signal or synchronizationtoggle?(8).What data and index by the real-time processing?(9).W

10、hether the sampled data reserved?(lO).whetherthe data for further processing?Application MD3000 system need to make clear the meaning of the above problems and familiar with the set or modify themethod.MD3000 biological signal acquisition and processing system(二)System application software introduce

11、MD3000 biological signal acquisition and processing system application software easied to learn and use is the standardWindows 32-bit application program,because of the graphic operation interface consistent with other Microsoft application programstyle.MD3(X)0 application software is easy to instal

12、l and unload,no special requirements on the hardware and do not seizure thespecial resources of the PC.Tlic users do not have to adjust the microcomputer port,and other complex operations.Done out of thebox,very fast and convenient.My company has developed dedicated 98/2000/XP device driver.This dev

13、ice driver can effectively and complete hardwareacquisition data transmitted from the PC memory to the upper application program,which is development WINDOWS samplingapplication program the key.This is an important symbol of our products with other similar products,but also the MD3000 biologicalsign

14、al acquisition and processing system is fully embodies a high-tech product.Because of the standard and specification program development,It has brought great convenience to the users.Including allmouse clicks,easy and convenient,muti-window operation sampling and processing the data.Sampling window

15、size is adjustable,X,Vaxis compressed extended freely.Supports all printers,and network resource sharing.Especially MD3000 can seamlessconnection with other Windows application(ACCESS,Excel,Word)as resources,meanwhile,It can share data that data processingwork from the complex,a large number of labo

16、r have been liberated.Long time records,while sampling side save,no maximum filesize and time limited.Support Chinese long file names can be any file named.On the other side,WINDOWS software s advantagescan be reflected in the MD3000.The hardware is work base and the software is the core to complete

17、 the task in the MD3000.MD3000 can pass through softwaresettings on the hardware by the different ways of working to organize the software process.So it can replace the recorder,oscilloscope and stimulator,etal.And other experiment equipment.According to the operating method,MD3000 is divided into t

18、hree operating modes:Recorder:multi-channel recorder lake the paper tracings operating mode of the signal curve.Drawing way is moving from rightto left in full-screen.Signal of the slow,continuous record of the experiment.Such as blood pressure,respiration and ECG etal.Oscilioscope:the working mode

19、of the inulti-linc memory oscilloscope,the drawing method is left to right,adopt a painted one.For faster signals,especially the experiments of the periodic signal.Such as neutral stem action potentials.Slow-wave scanning:multi-line slow scan mode of operation of the memory oscilloscope.The drawing

20、is from left to right,while wiping edge painting.Continuous record on the faster signal recorder way to full-screen mobile caused vertigo can be avoidedin this way,difficult to observe the shortcomings of the curve.Adopt for continuous recording at a faster signal occasions.Such asdepressor nerve di

21、scharge.Above all three ways in the users can choose one.In addition to the curve drawing is a bit different,and other software to use isthe same.This all the consistency of the operating mode to use,but also one of the big advantage of MD3000 system.三 MD3000 system software operating instructionAcc

22、ording to the function complete division,MD3000 mainly complete the following three aspects of the operation:File operation,editing of the data,showing the style of regulation.Data measurement,processing,and Results of the chart output.Real-time to adjust the various parameters of the MD3000 s hardw

23、are,so as to make the handware can be in the bestcondition of the work.When used,we should be clear that the function of the menu or button from the three aspects operation.Such we may shoot thearrow at the target at ourselves will.However,MD3000 system is a mult-windows software.In addition to some

24、 setting windows,mainly working windows havethree as follows.sampling window：showing sampling waveform,observation,measurement,select the waveform to be processed.“print edit window：editing of printed curve which can adjust size and pattern and can be freely add,delete,modify thecharacter string.dat

25、a window：similar to table window of the Excel,measurement results shown on the curve.In the software menu functions described below is quite different for different window.In accordance with the currentlyactive window,the basic principle make to invoke the appropriate processing methods and function

26、s.（一）MD3000 interface overviewInterface includes:title bar,menu bar,toolbar,state prompt bar and sampling window,deal window,data window,etal.and otherappropriate child window composition.MD3000 start the interface as below follow:MD3000 system software1.Title block:prompt experiment name,save the f

27、ile path,filename and include as“zoom out,expand,close“button.2.Menu block:according to different operating function,classification selecting operation.Include main menu name asfollows:A.File:including all file operations.Such as open,save,print,exit,etc.B.Edit:including all editing functions for th

28、e signal graphics.Such as cut,copy,paste,etc.C.View:whether or not to switch showing on the main visible part of the interface.D.Set:choose the system to run on the set.E.Expcriment:select the specific teaching and scientific research and experimental projects have been completedcustom experimental

29、configuration.F.Deal:including all after sampling processing capabilities for signal graphics.Such as FFT calculate,digital filtering.G.Window:providing about window operation.H.Help:including online help,copyright information and Website Links.3.Shortcut toolbar:the commonly used tool buttons,as lo

30、ng as the mouse arrow is pointing to the button,click the left buttonin mouse,you can enter the operating.4.Mark bar:add and edit of experiment tags,and positioning of the experimental data.5.Channel sampling window:including three parts:Firstly,channel control area“is displaying channel number and

31、real-timecontrol amplifier hardware,which is on the left-most of sampling window.Secondly,“waveform display area“is in central ofsampling window.Which display dynamic signal waveform when sampling and display static waveform curve when processing.What,s important,further analysis and processing of a

32、rtificial selected part of waveform.MD30006.0 is advanced multi-window toshare data method,meanwhile,nwlti-window dynamic,static observation or measurement.Lastly,result display control area”is onthe right-most of sampling window.Which is showing Y-axis scale,sampling channel content and unit;contro

33、l base line regulation,Y-axis waveform compression,expansion,scaling operation,etc.6.X-axis display control area:dynamic display of sampling time(X-axis),drag control X-axis of the waveform,X-axiswavefonn compression and expansion.7.Sampling control area:on the right of X-axis display control area，f

34、unction including start sampling,stop sampling andsampling save.8.Stimulator control area:on the left of X-axis display control area”,select stimulate mode of stimulator,to stimulate thestart swith and stimulus parameters when the real adjustment.9.Prompt bar:suggesting that the relevant operational

35、 infonnation at the lower part of interface.MD3000 state and currentspace available of hard disk.(二)Mouse operating instructionMD3000 biological signal acquisition and processing system s graphical interface,as long as move the mouse arrow to theappropriate operating position under normal circumstan

36、ces,click the left button to complete the operation,similar to the operation ofOffice.I.Main menu operation:when the mouse arrow point to main menu bar,press the left mouse button(do not lift)continue tomove the mouse to the selected item and then lift to complete the operation.2.Toolbar prompt oper

37、ation:when the mouse arrow stays in the toolbar button to display the toolbar,click the left mousebutton to complete operation.3.Scroll bar operation:the mouse arrow points to the scroll ban press the left button(do not lift)drag the mouse to quicklycomplete the curve graphical X-axis orientation.4.

38、Right-key shortcut operation:click the mouse right button pop the main operation at different window and screen position,select and click the left button to complete the operation.5.Channel sampling window:including some areas.Special operations see the following on the MD3000 system software.(三)Tit

39、le barTitle bar on the top of the interface,mainly functions as follows:1.Display system name,window name or experiment name.2.Display the current temporary filename,save the file name.3.Window control buttons can freely adjust window size and place,include as“maximize，“minimum,close”.(四)Menu barThe

40、 menu bar mainly complete control and operations at the upper part of interface.As shown below:File Edit View Setup Experiment Procesing Window Help1.File(F)After open file menu,drop-down menu to see the nght:A.New:the main function is to creat at new waveform data files,and clear thewavefbnn data f

41、ile in the original sampling window.MD3000 system has a new instrumentation work-style different with other applicationprogram.the“new”has drop-down menu including three ways,respectively:recorder,oscilloscope and slow scanning oscilloscope.Generally,slow signal need select recorderway(blood pressur

42、e,respiratory tract pressure,skeletal muscle tension,cardiac musclecontraction,intestine muscle tension,etc.)period and fast signal need select oscilloscopeway(such as:nerve stem action potential).Continuous observation of fast signal needselect slow-wave scanning way.MD3000 solved the plot slow wit

43、h computer display,fastsignal can also used to display a recorder,but the amount of data.It is noteworthy that in oscilloscope is selected,but also to select sampling triggerwhich is stimulator.Adjust the parameters of the stimulator,one stimulating and one sampling,a periodic signal on the screen i

44、s easyEdit View Setup Experiment?rccesiNewOpen ClxlIOSave Ctrl+SSave&s.Data export Recrcli temporary dxta f il e.Rsrpor pypP Ti mpntal rApnrfFile link Upen Uinti gerSave CjnfignraticnCustomize ezperirrent Current con:iPage StupPrint?review Pirat.Ctrl+PRecent ADD file s Exit CtrltQto observe m a fixe

45、d position.B.Open:open reserved waveform data file(*.ADD),then open processed result data file in data window(*.XLS),open printedit file in print edit window(*.MEP).click shortcut button/of toolbar have same function.C.Reserve:the reserved waveform data by current file name(*.ADD)or processed result

46、 waveform data(*.XLS)and printedit file(*.MEP).click shortcut Jbutton of toolbar.D.Save as:the save as waveform data by user-defined file name(*.ADD)or processed result waveform data(*.XLS)and printedit file(*.MEP).Above three operations,the click of a mouse will pop up the corresponding dialogue op

47、eration in the dialog box,enter the filename(additional name),press the OK button to complete the operation.E.Export data(see to right diagram:):(1).Selected datause part of the segment data in export sampling data,save asdata file(*.ADD).this function is available to extract some interestsegments f

48、rom a large sample data,the selected segment can be asingle paragraph,but multi-segment(behind the selection methoddescribed).Meanwhile,single or multi-segment,save files includingall channel.(2)single/multi-data channelF ile linkUpen grSave Cmi grati cnCastomize ezperiirentCurrent con:i g.Page Situ

49、p.Print?reviewPirat.Ctrl+PRecent ADD file sCtrl+QSeparate out one or a fcw-channcl data at sampled data files,which save as data file(*.ADD).it is displaying separate channelwaveform when open(he new file.Which save as text form(*.TXT).this form need be further process,or directly print to analysisd

50、ata.(3)channel data extract:larger than the originalsampling interval time is extracted in the sampled datafiles,in order to reduce file byte count.(4)MD3000 data file-form conversion:waveform data files(*.ADD)convert to binary systemdata files(*.BIN),providing fbr other applications torfurther anal