here - Complete ECG / EKG Generator and Waveform Simulator
Contents
1. SPECIAL EVENT Complete ECG Generator QRS TRIGGER Device under test ECG CH1 ECG REF 5mV ECG CH2 FIG 3 1 Connection diagram of Complete ECG Generator Device under Test High voltage output High voltage output that available on 2 5mm stereo jack connector see FIG 1 4 includes three signals CH1 CH2 and ground Voltage levels on the high voltage output correspond to 0 to 4 096V full scale with 2 048V reference This output is implemented for testing of electrocardiographic equipment on the development stages using emulators www completeecggenerator com COMPUTER 1 COMPUTER 2 SPECIAL EVENT Complete ECG QRS TRIGGER Generator EMULATOR A A ECG CHI GROUND ECG CH2 FIG 3 2 Connection diagram of Complete ECG Generator Device for development using emulator Hook up inputs The generator has two hook up inputs that allow for creating of custom annotation files for further comparison them against the original database annotation The hook up inputs are available on 3 5mm stereo jack connector see FIG 3 4 NOTE Annotation file is created ONLY when the entire recording was replayed ORS Trigger input QRS Trigger input accepts logic level pulses that are generated by the device under test and correspond to the detected QRS waves2. 00 08 21 Channel 2 W 1 www completeecggenerator com 4 2 2 2 ECG Database signals The system supports two options for generating database ECG signals Single file Batch option sequentially generates signals from all files in the selected database folder NOTE Both Single and Batch options support bxb comparison of annotation files To open interface click ECG Databases option box Browse Browse single ECG batch ECG recording recordings j A 4 To search for a single ECG recording click the button below Browse single ECG recording MIT BIH Database example Navigate to the MIT database folder and select a header file of the required recording Find Header file Look in MIT DB TEST gt fm DI 18 106 My Recent 18 108 Documents 18 109 5 203 219 Desktop My Documents My Computer File name f 00 F d My Network Files of type Header hea X Cancel Places TT Open as read only Information related to the selected recording a Header file content ECG Databases Reference http ne physionet org ECG Recording Information Header Content Aa 100 360 650000 100 dat 412 200 11 1024 995 2 24131 0 M 100 dat 412 200 11 1024 1011 0052 0 V f 69 HM 1085 1629 xl f Aldomet Inderal 4 gt www completeecggenerator com b ECG file preview Signal Previews ECG Databases MITDB 100 c List of reco
3. 1 mV Normal sinus rhythm duration 10 sec Abnormalty duration 10 sec Abnormaiity heart rate N A BPM www completeecggenerator com To stop generation process click Stop button Stop Generation and visualization process for the other Rhythm abnormalities signals are the same as for the Pause signal No annotation file will be generated for Rhythm abnormalities signals 4 3 bxb analysis section BXB Analysis uses beat by beat comparison algorithm described in ANSI AAMI EC38 1998 the American National Standard for Ambulatory ECG monitors and in ANSI AAMI EC57 1998 the American National Standard for Testing and Reporting Performance Results of Cardiac Rhythm and ST Segment Measurement Algorithms See BXB Analysis reference in Appendix A bxb application is part of WFDB Software Package See WFDB Software Package reference in Appendix A To open BXB Analysis interface click BXB button BXB Analysis interface includes 2 sections Test Annotation File Folder section navigates to the single annotation file for bxb analysis navigates to the batch of annotation files for bxb analysis adjusts match window con Complete ECG Generator v1 0 0 BXB Analysis Test Annotation File Folder CO A db File Folder match window sec 015 default 0 15 sec lt BXB Analysis Result gt To navigate to the test annotation file click File button 20 www completeecggenerator com
4. sn ni TT A E Channel 1 Scale 4 Refresh Channel 2 Scale 10 Frequency and Amplitude of the selected signal can be adjusted from ECG Amplifier Parameters interface ECG Amplifier Parameters I Frequency Hz Amplitude ESSE 15 www completeecggenerator com To run signal generation process click Start button Start Generated waveform graphs will be available for visual control in the Generate the Signal window ECG Amplifier Testing 5 ignals Sine Frequency 1Hz Amplitude Sra i AAAA NANANA ANA IVVVVVVVVVVVVVV E a IVVVVVVVVVVVVVV To stop generation process click Stop button Stop Generation and visualization process for other ECG Amplifier testing signals are the same as for Sine waveform No annotation file will be generated for ECG Amplifier testing signals 4 2 4 Test Waveforms Test Waveforms signals are generated in accordance with ANSI AAMI EC13 2002 Cardiac monitors heart rate meters and alarms standard The files in this set can be used for testing a variety of devices that monitor the electrocardiogram The recordings include both synthetic and real waveforms See Test Waveforms reference in Appendix A To open interface click Test Waveforms option box To select required waveform click the appropriate button below Test Waveforms Li Telo _Create Create Create Create Create Create a
5. 16 www completeecggenerator com After installation of Application no test waveform information exists in the system To make each of this signal available for generation click Create button on the right side of the required waveform button It is user s responsibility to comply with AAMI copyright requirements when creating such waveforms Triangle waveform example From the interface below select signal parameters from available drop down boxes and click Save button Test Wiaveforma Ref ANSIA AMI ECTS 2002 lt Create Triangle gt Amplitude QAS ee rn Save Amplitude T wave mw 7 ance Heart Rate BPM Amplitude y Pacemaker pulse Mi Irregular rhythm type Triangle signal preview window Signal Previews Test Waveforms Triangle Triangle signal parameters window ANSIZAARMI Parameters gt Amplitude GAS to ro Amplitude T wave NAA rity Heart Rate 60 BRM Amplitude NAA rity Pacemaker pulse Irregular rhythm type WA To run signal generation click Start button Start 17 www completeecggenerator com Generated waveform graphs are displayed in the Generate the Signal window Test Waveforms Triangle Ampl QRS 1 mv Ampl T wave N A mv Heart Rate 60 BPM Ampl Pulse N44 my Irregular Rhythm N44 To stop generation process click Stop button Stop Generation and visualization process for other test waveforms is the same as fo
6. 318 325 305 312 319 326 306 313 320 327 ST T European ST T Database This database includes 90 ECG recordings and 1s intended to be used for evaluation of algorithms for analysis of ST and T wave changes supported 84 ECG recordings e0103 e0104 e0105 e0106 e0108 e0110 e0111 e0112 e0113 e0115 e0116 e0118 e0119 e0121 e0122 e0123 e0124 e0125 e0126 e0127 e0133 e0136 e0139 e0148 e0151 e0154 e0155 e0159 e0161 e0162 e0163 e0170 e0202 e0203 e0204 e0205 e0207 e0208 e0210 e0211 e0212 e0213 e0302 e0303 e0304 e0305 e0306 e0403 e0404 e0405 e0406 e0408 e0409 e0410 e0411 e0413 e0415 e0417 e0418 e0501 e0509 e0515 e0601 e0602 e0603 e0604 e0605 e0606 e0607 e0609 e0610 e0611 e0612 e0613 e0614 e0615 e0704 e0801 e0808 e0817 e0818 e1301 e1302 e1304 23 www completeecggenerator com SVDB MIT BIH Supraventricular Arrhythmia Database This database includes 78 half hour ECG recordings chosen to supplement the examples of supraventricular arrhythmias in the MIT BIH Arrhythmia Database supported 75 ECG recordings 800 801 802 803 804 805 806 807 808 809 VFDB MIT BIH Malignant Ventricular Arrhythmia Database 810 811 812 820 821 822 823 824 825 826 827 828 829 840 841 842 843 844 845 846 847 848 849 850 852 853 855 856 857 858 859 860 861 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 87
7. FTDI devices from PC Check if Complete ECG Generator Device is connected to PC Check from Complete ECG Generator Application Main Settings and MS Windows Device Manager utility the correct COM port If Device does not respond due to unexpected errors it is recommended to disconnect USB cable for 15 seconds and connect it again 2 Error messages related to files folders and system database Solution Make backup of Test Annotation folder TstAnnot and reinstall Complete ECG Generator Application Restore Test Annotation folder TstAnnot to Application folder Warning Operation of the System under MS Windows environment is extremely timing sensitive Therefore it is recommended to use a computer that has no residential programs antivirus antispyware and alike running and no new applications shall be launched during operation of the Complete ECG Generator System 29 www completeecggenerator com Appendix E Signal quality and working setup Due to highly sensitive ECG amplifier under test and common mode noise emitted by the working hardware around working site it is important to maintain low noise environment when using Complete ECG Generator Below some examples of the amplifier output noise in different working setups All three samples are made using MITDB recording 100 ha N Pip sta hy kk al Pe a miT HIM IM T ii M Av he h Aih M AMIN WAM nanos Na ppi ayy Y Mi iL Ny TI j FIG E 1 Very noisy en
8. Find Test Annotation File Look in MITDB_ANN e ct Ea 100_00001 atr 101_00001 atr My Recent 102_00001 atr Documents l e 103_00001 atr E 104_00001 atr 105_00001 atr Ei 106_00001 atr 107_00001 atr 108_00001 atr My Network Files of type Annotation File atr Cancel PI aces I Open as read only File name nos Z Select required test annotation file and click Start button Results will be shown in BXB Analysis Result window Complete ECG Generator v1 0 0 BXB Analysis Test Annotation File Folder C WBB ECGGENSUSRAnnot MITDB_ANN 100_00001 atr rai match window sec jo 5 default 0 15 sec Eohi m lt BXB Analysis Result gt match window 0 15 sec Beat by beat comparison results record 100 Reference annotator atr Test annotator ann Algorithm v f QRS sensitivity 99 95 1901 1902 QRS positive predictivity 100 004 1901 1901 VEB sensitivity 0 00 O 1 VEB positive predictivity 0 0 VEE false positive rate 0 000 0 1900 Beats missed in shutdown 0 00 0 1902 N missed in shutdown 0 00 0 1901 V missed in shutdown 0 00 O 1 F missed in shutdown 0 0 Total shutdown time O seconds Browse for Folder Navigate the Test Annotation Files Folder Ee Ref Annot E TstAnnot AFDELANN E CUDB_ANN LTDE_ANN C MITDE ANN NSRDB_ANN SS NSTDB_ANN 3 STDB_ANN E ST T_AMN ff SYDB_A
9. SPECIAL EVENT INPUT 2 5mm STEREO JACK DAC CH2 0 4 096V OUTPUT DAC CH 1 0 4 096V OUTPUT i GND FIG 3 5 Pin assignment of input and output connectors NOTE In case of excessive common mode noise use laptop computer with battery power supply see also Appendix E www completeecggenerator com 4 Software structure of the CEG Application Block diagram of software structure is shown below SETTINGS EXIT Database n ANSI AAMI EC13 2002 f signals ECG Amplifier recommended signals ier tea BXB generation testing signals generation abnormalities START SIGNAL STOP SIGNAL GENERATION GENERATION Annotation for each of SIGNAL SETTINGS Print Save processed bxb result file recordings j SIGNAL GENERATION SECTION 4 1 Settings section Settings section includes all settings that control operation of the Complete ECG Generator 0 2 i FTDI 1 Main Viewer lt SETTINGS CUM Port Settings COM Port Baud 8 38400 amp 4 1 1 COM Port Settings Shows PC COM Port selected for connection to the Device LUM Port Settings COM Port amp Baud 35400 a 4 1 2 FTDI status FTDI button shows number of connected FTDI devices to PC and when depressed updates status no FTDI device is connected to the PC www completeecggenerator com vi FTDI 1 FTD
10. aaa 29 E Signal quality and working setup 30 www completeecggenerator com 1 Introduction 1 1 Purpose The system offers complete solution for development and testing of analogue hardware of cardiac devices using various geometric waveforms and ECG analysis algorithms by generating real analogue signals using MIT and other compatible ECG databases Complete ECG Generator CEG system creates custom annotation files that can be compared against the original database annotation files using bxb application In addition the system generates simplified waveforms with various rhythm abnormalities for the preliminary testing of autotrigger algorithms 1 2 System Organization System includes two main components Complete ECG Generator device Device Complete ECG Generator application Application Complete ECG Generator Device Complete ECG Generator device generates high accuracy 1 amplitude and timing tolerance dual channel analogue signals converting digital data received from Complete ECG Generator application In addition to its signal generation function the Device is able to receive from the cardiac device under the test digital signals such as QRS pulse Trigger pulse and Special Event signal for instance inhibition of real time analysis due to excessive noise The Complete ECG Generator Device sends these signals to the Application that stores them as a custom annotation file For the development
11. or by rhythm analysis trigger The device under the test generates 5mS pulse when QRS has been detected or 50mS pulse when QRS Trigger occurred See FIG 3 3 3 gt 5 mS gt 50 mS gi lia gi QRS pulse QRS Trigger pulse FIG 3 3 QRS and Trigger signals www completeecggenerator com Note that decision to declare a trigger coincides with detection of the QRS when rhythm analysis is performed Therefore trigger pulse is also treated as a QRS When the Generator receives from the device under the test QRS Trigger pulses it transmits a corresponding number of the digital sample to the PC and that number is stored in the custom annotation file The Generator also displays QRS Trigger markers The generator distinguishes between QRS and trigger pulses and sends to the PC two different codes Special event input Special event input accepts logic level signal that corresponds to the selected by the developer event that is generated by the embedded firmware Special event has its beginning when the signal is set high and the end when the signal is set low why ECG GRAPH hhh n TIME SFECIALEVENT ORS TRIGGER ORS ORS ORS QRS AMPUFIER SATU RATION ops SPECIAL EVENT TRIGGER QRS o GIRS N N N 7 N Pea ANS Seat FIG 3 4 QRS Trigger and special event signals and ECG data relationship when embedded firmware inhibited QRS detection due to amplifier saturation 3 5mm STEREO JACK COMMON y QRS TRIGGER INPUT
12. 109 6110 7001 7002 7003 7004 7005 7006 7007 7008 7009 7010 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8101 8102 8103 8104 8105 8106 8107 8108 8109 8110 26 www completeecggenerator com supported 154 ECG recordings short version 1201 2201 3201 4201 5201 6201 7201 8201 1202 2202 3202 4202 5202 6202 7202 8202 1203 2203 3203 4203 5203 6203 7203 8203 1204 2204 3204 4204 5204 6204 7204 8204 2205 3205 4205 5205 6205 7205 8205 1206 2206 3206 4206 5206 6206 7206 8206 1207 2207 3207 4207 5207 6207 7207 8207 1208 2208 3208 4208 5208 6208 7208 8208 1209 2209 3209 4209 5209 6209 7209 8209 1210 2210 3210 4210 5210 6210 7210 8210 1301 2301 3301 4301 5301 6301 7301 8301 1302 2302 3302 4302 5302 6302 7302 8302 1303 2303 3303 4303 5303 6303 7303 8303 1304 2304 3304 4304 5304 6304 7304 8304 1305 2305 3305 4305 5305 6305 7305 8305 1306 2306 3306 4306 6306 7306 8306 1307 2307 3307 4307 6307 7307 8307 1308 2308 3308 4308 6308 7308 8308 1309 2309 3309 4309 6309 7309 8309 1310 2310 3310 4310 6310 7310 8310 supported 1 ECG recording sample short version 0201 record that was excluded from the AHA Database is available for download from physionet org N B CEG does NOT support AHA database files in native AHA format To use CEG for AHA files it s compulsory to convert AHA files txt ecg etc to MIT BIH 2012 format by converters from phy
13. 9 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 This database includes 22 half hour ECG recordings of subjects who experienced episodes of sustained ventricular tachycardia ventricular flutter and ventricular fibrillation supported 22 ECG recordings 418 419 420 421 422 423 AHA Database for Evaluation of Ventricular Arrhythmia Detectors Two versions of the database are available the short version includes five minutes of unannotated ECG signals prior to the thirty minute annotated segment of each recording and the long version includes 2 5 hours of unannotated ECG signals prior to each annotated 424 425 426 427 428 429 segment 430 602 605 607 609 610 611 612 614 615 supported 154 ECG recordings long version 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 1001 1002 1003 1004 1006 1007 1008 1009 1010 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5101 5102 5103 5104 5105 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6101 6102 6103 6104 6105 6106 6107 6108 6
14. B No annotation file will be created for terminated database playback 4 2 3 ECG Amplifier testing signals Common periodic waveforms include Sine wave The amplitude of the waveform follows a trigonometric sine function with respect to time Square wave This waveform is commonly used to assess filter function of the ECG amplifier Triangle wave It contains odd harmonics Sawtooth wave This looks like the teeth of a saw Sawtooth wave of constant period contains odd and even harmonics 14 www completeecggenerator com ECG Amplifier Testing Signals Sine Fet http Syvikipedia org Fayuan Example only me i S gio ont bs DC Offset test signal This signal is used to test DC offset performance of front end of ECG amplifier User selectable values of OmV 100mV 200mV and 300mV are available Square pulses 2mV_ 1Hz are superimposed over selected DC offset See ECG Amplifier testing signals reference from Appendix A To open interface click ECG Amplifier testing signals option box To select required waveform click Sine Square Triangle Sawtooth or DC Offset button Sine waveform example Testing Signals Sine l Square PA ECG Amplifier i Canale Sawtooth __ DC Offset Td rd d gt 9fJfJfe PH i Sine signal preview window Signal Previews ECG Amplifier Testing Signals Sine Frequency 1Hz Amplitude Sm _ _
15. BIH Arrhythmia Database The MIT BIH Arrhythmia Database contains 48 half hour excerpts of two channel ambulatory ECG recordings obtained from 47 subjects studied by the BIH Arrhythmia Laboratory between 1975 and 1979 supported 48 ECG recordings 100 108 117 201 212 222 101 109 118 202 213 223 102 111 119 203 214 228 103 112 121 205 215 230 104 113 122 207 217 231 105 114 123 208 219 232 106 115 124 209 220 233 107 116 200 210 221 234 24 www completeecggenerator com NSRDB MIT BIH Normal Sinus Rhythm Database This database includes 18 long term ECG recordings of subjects referred to the Arrhythmia Laboratory at Boston s Beth Israel Hospital now the Beth Israel Deaconess Medical Center supported 18 ECG recordings 16265 16272 16273 16420 16483 16539 16773 16786 16795 17052 17453 18177 18184 19088 19090 19093 19140 19830 NSTDB MIT BIH Noise Stress Test Database The ECG recordings were created using two clean recordings 118 and 119 from the MIT BIH Arrhythmia Database to which calibrated amounts of noise were added supported 8 ECG recordings 118E06 119E06 118E12 119E12 118E18 119E18 118E24 119E24 STDB MIT BIH ST Change Database This database includes 28 ECG recordings of varying lengths most of which were recorded during exercise stress tests and which exhibit transient ST depression supported 28 ECG recordings 300 307 314 321 301 308 315 322 302 309 316 323 303 310 317 324 304 311
16. Contents i 1 1 1 2 2 2 3 4 4 1 4 1 1 4 1 2 4 1 3 4 1 3 1 4 1 3 2 4 1 3 3 4 1 3 4 4 1 3 5 4 1 4 4 2 4 2 1 4 2 2 4 2 2 1 4 2 2 2 4 2 3 4 2 4 4 2 5 4 3 Appendix Appendix Appendix Appendix Appendix www completeecggenerator com Complete ECG Generator System USER MANUAL TInCroduetion ae 2 PUP OSE arean a 2 System Organization snai alla 2 Requirements to the System rrtrrrte 3 Features of the System 4 Software Str ruUGCUT e siao aaa 7 SELtings SECCION sesira A 7 COM POPE Settings eessen 7 FIDI status DUELCON cnc 7 Main settings SECHIOl i lil 8 Selection of COM POTt ssesecccccscsccccccscscsccecscscsccecsceee 8 FTDI SOCCINO Suonsi aaa 9 Signal View SettingsS sesesecccccscsccccccscscsccecscscsesecscsee 9 save Settings 9 Open Device ManageL orrrerrecerisiseesescesisconenzese 9 Viewer SELEInNGS lia 9 Signal generation Section 10 Signal ah a gal Senne asl 10 ECG Database S peer ere en ere ee ene eee 11 ECG Database settings sins 11 ECG Database signals ian 12 ECG Amplifier testing signals 14 Test Waveforms screena eea ea areae 16 Rhythm abnormalities signalSs 18 bxb analysis SEeCCION asi ini 20 A Reference Links lla 23 B Supported ECG Database amp Recordings 24 C Files amp Folders conventions 28 D FEOubleshooting
17. I device s connected to the PC Red flag on the icon indicates that FTDI device is detected 4 1 3 Main settings section To open Main Settings click the button below f Hain Main Settings interface includes 3 sections A Complete ECG Generator v1 0 0 Main Settings 4 COM Port Settings gt Signal View Settings gt Select COM Port FF Annotation ae Device QRS COM Port Parameters Device Trigger ti Device Event 115200 x cHe Timer Data Bits 8 Countdown Stop Bits 1 Channel 1 Channel 2 4 a lt FTOI Settings gt Test Device Information from FTDI DLL Manager Mumber of Devices 1 O Description FTZ32RUSBUART O Serial Number A4400gHHe Test Passed Information from WMI Creation date FO090711124220 8437504600 File name ftdibus Last accessed 0110627137640 928125 600 Last modified 70090717221900 000000 6560 Manufacturer FIDI Ltd Name cl ywindows systemsz drivers ftdibus sys Path windows isystem3ZXdrlvers Version 04 16 built by WinDDK Information from SETUPAPI DLL Communications Port COMNlI USE Serial Port CONlODOI 4 1 3 1 Selection of COM Port Using button Test FTDI Settings check available COM ports on your computer Select COM Port number Select COM Port that corresponds to the USB Serial Port on your PC www completeecggenerator com 4 1 3 2 FTDI Settings This section allows for testing FTDI devi
18. NN i WERE AMIRI Click OK button when select required test annotation files folder then click Start button www completeecggenerator com Results will be shown in BXB Analysis Result window Complete ECG Generator v1 0 0 BXB Analysis Test Annotation File Folder i C VBBSECGGENSUSRAnnot MITDB_ANN d ail match window sec 0 15 default 0 15 sec Fis Ereti lt BXB Analysis Result gt match window 0 15 sec Beat by beat comparison results record 100 Reference annotator atr Test annotator ann Algorithm f q QRS sensitivity 1901 1902 QRS positive predictivity 1901 1901 VEB sensitivity O 1 VEB positive predictivity 0 0 VEE false positive rate 071900 Beats missed in shutdown 071902 N missed in shutdown 071901 V missed in shutdown 0 1 F missed in shutdown 0 0 Total shutdown time O seconds BXB Analysis for both annotation File and Folder can be created with adjustable from drop down box match window BXB Analysis Result section makes bxb analysis shows bxb analysis results in window prints bxb analysis results saves bxb analysis results in text file See Appendix C Files amp Folders conventions 22 www completeecggenerator com Appendix A Reference Links ECG Databases http www physionet org physiobank database ecg ECG Amplifier testing signals http en wikipedia org wiki W aveform http en wikipedia or
19. ces connected to the PC NOTE It is recommended that only one FTDI device is connected to the PC during operation of the Complete ECG Generator system 4 1 3 3 Signal View Settings This section enables disables display of various variables during signal generation 4 1 3 4 Save settings To save settings click Save button 4 1 3 5 Open Device Manager To open Windows Device Manager where available COM ports can be seen or renamed if required click Device Manager button 4 1 4 Viewer Settings To open Viewer Settings click the button below ial Yiewer Viewer Settings interface includes 2 sections le Complete ECG Generator v1 0 0 Viewer Colour Settings Bo lt Parameters gt s Channel Divider _ Colors Save Close MIT Event Marker lt Preview gt Test Device Event Marker C Test Device Trigger 1st channel 1st channel Baseline 2nd channel 2nd channel Baseline Parameters section shows signal graph window color settings allows to select color setting for each listed item Preview section shows signal sample with color settings from Parameters section To change color for graph color settings selected from Parameters section click Colors button www completeecggenerator com Basic colors E Gey eee es ie E EE EEE ee BEE EEE ee BEB EEE ee ILE LT Imi im Define Custom Colors gt gt From Color interface select required color and click OK button To save Color set
20. g wiki DC_bias Test Waveforms http www physionet org physiobank database aami ec 13 BXB Analysis http www physionet org physiotools wag bxb 1 htm WFDB Software Package http www physionet org physiotools wtdb shtml FTDI driver http www ftdichip com FTDrivers htm Adobe Acrobat Reader http get adobe com reader 23 www completeecggenerator com Appendix B Supported ECG Database amp Recordings AFDB MIT BIH Atrial Fibrillation Database This database includes 25 long term ECG recordings of human subjects with atrial fibrillation mostly paroxysmal supported 23 ECG recordings 04015 04043 04048 04126 04746 04908 04936 05091 05121 05261 06426 06453 06995 07162 07859 07879 07910 08215 08219 08378 08405 08434 08455 CUDB Creighton University Ventricular Tachyarrhythmia Database This database includes 35 eight minute ECG recordings of human subjects who experienced episodes of sustained ventricular tachycardia ventricular flutter and ventricular fibrillation supported 34 ECG recordings cu01 cu08 cul5 cu22 cu30 cu02 cu09 cul6 cu23 cu31 cu03 cu10 cul7 cu24 cu32 cu04 cull cul8 cu25 cu33 cu05 cul2 cul9 cu26 cu34 cu06 cul3 cu20 cu28 cu35 cu07 cul4 cu21 cu29 LTDB Long Term ST Database This database contains 7 long term ECG recordings 14 to 22 hours each with manually reviewed beat annotations supported 6 ECG recordings 14046 14134 14149 14157 14172 14184 MITDB MIT
21. ion file is saved under unique name perform bxb analysis for two annotation files reference and test Generated signals are divided into four categories ECG Database signals include all MIT BIH and some other compatible database recordings generated for the entire duration of the recordings without any signal modification or padding ECG Amplifier testing signals such as square sine triangle sawtooth waves and DC Offset signal Settings for frequency and amplitude of these signals offer wide variety of choices for amplifier and filters testing and calibration Test Waveforms ANSI AAMI EC130210 2002 recommended signals that used for testing of particular requirements and essential performance of cardiac equipment Rhythm abnormalities signals that used for the preliminary testing of autotrigger algorithms WARNING Due to very sensitive timing requirements of Windows operating system it is recommended to use a clean computer which is not connected to the Internet and does not use residential software like antivirus It is also recommended not to start any other application while Complete ECG Generator is in operation Starting the System Upon connection to the USB bus the generator illuminates its yellow LED and green LED blinks several times indicating that the Device is ready to be initialised by the Complete ECG Generator Application During normal operation green LED blinks every second 2 Requirements to
22. le f Channel 2 La 4 2 2 ECG Databases ECG databases include digitized ECG signals and beat annotations See ECG Databases reference from Appendix A and Supported ECG Database Recordings list from Appendix B 4 2 2 1 ECG Database settings In the database settings section several options can be selected by the user Device QRS option if enabled will display QRS markers as vertical lines that drawn at the position of the QRS pulse received from the device under the test see section 3 above Device Trigger option if enabled will display Trigger markers as letter T at the position of the Trigger pulse received from the device under the test see section 3 above Device Event option if enabled will display Events by changing color of the ECG graphs at the beginning and the end of the Event Annotation option if enabled will display annotation markers of the selected database recording Timer option if enabled will display time elapsed since the beginning of the recording Countdown option if enabled will display time to the end of the recording Channel I option if enabled will display ECG graph of Channel 1 of the database recording Channel 2 option if enabled will display ECG graph of Channel 2 of the database recording Signal Duration sec 508 DeviceQRS M DeviceEvent V Timer 00 00 07 Channeli Real Time Duration Device Trigger Annotation V Countdown V
23. purposes Device has higher voltage signal outputs with DAC reference 2 048V 0 4 096V output that can be interfaced directly to the emulators omitting front end amplifiers to avoid common mode interference Complete ECG Generator Device is powered by the USB bus that eliminates the need for the batteries or power adaptors and has a floating section that generates analogue signals converting received from the PC digital data using 12 bit DAC Floating section has optically isolated data lines and 1s powered by isolated DC DC converter Complete ECG Generator Application Complete ECG Generator application 1s Windows based software that controls operation of Complete ECG Generator device Functions of Application include testing of USB interface settings for Application desktop options selection of signal category database signals ECG amplifier testing signals ANSI AAMI EC130210 2002 recommended signals or Rhythm abnormalities signals setting of generated signal parameters www completeecggenerator com batch option to sequentially reproduce all ECG database recordings from the selected folder display of generated waveforms QRS Trigger and Special Event markers received from the device under the test display of elapsed time and other relevant information during signal generation generates annotation file for all ECG recordings where QRS Trigger or Special Event markers have been generated Each annotat
24. r the Triangle waveform No annotation file will be generated for Test Waveforms 4 2 5 Rhythm abnormalities signals These signals help in development of QRS detectors and auto trigger function The user can select what kind of rhythm abnormality will be inserted into the normal sinus rhythm of 60bpm Duration of the normal sinus rhythm run is selected by the user Signal parameters are user selectable List of abnormalities include Pal Sciara duration 1s set by the user Bradycardia 40bpm duration of the run is set by the user TachyCAfdid cciini 140bpm duration of the run is set by the user Atrial fibrillation duration of the run is set by the user Ventricular fibrillation duration of the run is set by the user To SELECT required signal use Left mouse click the appropriate button below To EDIT required signal use Right mouse click the appropriate button below CO Anth 00 f abnormalities signals Bradycardia Tachycardia Atrial fibrillation Ventricular fibrillation f eE ee 18 www completeecggenerator com Pause signal example From the interface below select signal parameters from available drop down boxes and click Save button Pause signal preview window Pause signal parameters window Generated signal graphs are displayed in the Generate the Signal window Rhythm abnormalities signals Pause Ampl QRS
25. rdings ECG DatabaseRecordings gt Select ECG from list NA ECG DE Record 1 MITOB 100 Record 100 1 of 1 To search for a batch of ECG recordings click the button below Browse batch ECG recordings Al From folder search interface select required ECG database folder with recording files Browse for Folder Navigate the ECG database folder Dj ANSI AAMI D backups Dj IconsBMP Images gt MIT DE TEST Dj Specs 4 useful_sw useful_vbcode MITAnnot USRAnnot WFDE mo Fi iEhI Tark List of recordings includes all found supported recordings in the selected folder To see information related to any recording click on the corresponding recording number in the table below and it will show Header file content and ECG file preview as above ECG Database Recordings Select ECG from list HN ECG DE Record 1 MITDB 100 Record 1000 o6 13 www completeecggenerator com To run signal generation process for single or batch recordings click Start button Start ECG window will show the generated signal and reference annotation marks Generate the Signal ECG Databases MITDB 100 gt After generation process is complete test annotation file for each recording will be created in the test annotation folder see Appendix C Files amp Folders conventions To terminate generation process click Stop button Stop N
26. sionet org http www physionet org physiotools wag a2m 1 htm 27 www completeecggenerator com Appendix C Files amp Folders conventions application folder folder where application was installed application folder ecggen exe application executable file application folder ecggen mdb system database file application folder user_manual pdf this is the User Manual file application folder RefAnnot folder which includes folders with supported ECG database names as AFDB CUDB LTDB MITDB NSRDB NSTDB STDB ST T SVDB VFDB Each of these folders include supported reference annotation and header files and at least one supported ECG recording file application folder TstAnnot folder which includes folders with supported ECG database names as AFDB_ANN CUDB_ANN LTDB_ANN MITDB_ANN NSRDB_ANN NSTDB_ANN STDB_ANN ST T_ANN SVDB_ANN VFDB_ANN Each of these folders include fest annotation files for each tested recording and bxb analysis result files both for single and batch analysis application folder WFDB folder which includes WFDB Software Package library amp applications Warning Manual changing the any of Complete ECG Generator System file folder can terminate proper system functionality www completeecggenerator com Appendix D Troubleshooting 1 Device is not recognized by Application Solution Check FTDI driver was installed Disconnect all
27. the System PC Hardware minimal requirements CPU 2 GHz RAM 2 GB Graphics card resolution 1024x768 USB port 200 MB HDD free space PC Software minimal requirements Windows XP SP3 FIDI driver The Device uses USB port of the computer to communicate with software Application Floating section of the Device is optically isolated from the computer in order to eliminate common mode noise Since optical isolation of the USB signals is not a trivial task RS232 protocol is used to transfer data to and from the floating section of the Device FTDI chip converts RS232 data format into USB www completeecggenerator com data format FTDI driver implements a virtual RS232 port on the computer that is in fact connected to the USB port See FTDI Driver reference in Appendix A Adobe Acrobat Reader See Adobe Acrobat Reader reference in Appendix A 3 Features of the System Low voltage output Low voltage output includes three signals CHI CH2 and reference voltage Voltage levels on the low voltage output correspond to format 212 of various ECG databases Three press stud type connector headers are placed on the top side of the generator This output is implemented for testing of electrocardiographic equipment including front end circuitry Note Shielded and short ECG leads should be used to connect device under test to the generator in order to minimise common mode noise that can be picked up by the leads COMPUTER
28. ting changes click Save button 4 2 Signal generation section System supports 4 categories of generated signals Md Complete ECG Generator v1 0 0 ECG Databases Reference http www physionet org Rhythm E abnormalities signals er cc Signal Preview gt COM Port 8 kai Baud 38400 js GENERATOR gt Device QAS Device Event I Timer ECG Databases _ 4 2 1 Signal Preview This window allows for the display of the beginning of any selected signal It includes graph window channel selection scales selection and refresh preview window button Signal Previews ECG Databases MITDB 100 f Channel 1 Seale Channel 2 Seale Y 1 0 Channel 1 or 2 can be selected for two channel signal 10 www completeecggenerator com For the single channel signal some of ECG Database and other signals does not matter which channel was selected and will show the same signal graph in any selected channel fa Channel 1 f Channel 2 Signal graph can be resized in graph window in both horizontal and vertical direction from scale drop down boxes Scale option works only for Signal Preview window and does not change the original signal parameters during generation of the signal Scale x ao Scale Y 10 l To see signal channel amp scale changes click Refresh button Signal Preview ECG Databases WITOS 100 f Channel 1 Scale amp 3 l sca
29. vironment Three desktop computers oscilloscope and signal generator operating and big antistatic mat in close proximity CEG is connected to and powered by one of the desktop PCs FIG E 2 Good environment No power hungry hardware operating in close proximity CEG is connected to and powered by laptop computer with mains power supply FIG E 3 Good environment No power hungry hardware operating in close proximity CEG is connected to and powered by battery operated laptop computer 30
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