LabVIEW????

1
LabVIEW????
??????????
2
??LabVIEW??????
1.A/D????????????????????? LabVIEW?,NationalInstr
uments?????????????????,????????,??,??????????????
??,?????????????,???????????.?????????????????,???
?????,?????????????,??????. 2.??????????????
????????????,??,??,??,???????????????????????,????
???????????????.??,????????????,????????,?????????
??????????. 3.????????????????????
?????????,????G???????,????????????????,??????????
?????????????????????????.?????????,??????????????
?????????,?????????????????????????.??,???????????
???????,????????????????.
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A/D??(?????????????)
??????????????????,???????????????????(A/D??)????
??.A/D??? ???????(?????????) ???????(????) ?
??????????.?????,???????????,?????????????,???????
???????,??????????????????????????.???????????,???
??,1kHz(1???1000?)??????????,16bit(65536??)???????
???????.
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A/D???????
5
??????????
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????????????????-?????????????(1)
4???????????????????,??????????(Z0)??????????????
????(?Z)????,Kubicek??????????????????.
SV?????,MBP????????? MBPCOTPR MBPSVHRTPR
CO(????),TPR(?????)?????????.???????,?????????????
?????,???????????????.???????????????,????????????
,???????????????????????????.
????11?2?(1993) ???????????????????????
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????????????????-?????????????(2)
???? ????????(??????????)???,???????????????????
?????. ????????? ? ? ????????(????????????????
???????) ??(1000??13??,????????.) LabVIEW?????
ECG????,R??????. ?Z????,??????dZ/dt???. ????????
,R??????,dZ/dt?50100?????????. ???????ECG,dZ/dt?
???,Q?,B?,X??????. ??????Kubicek????????,SV???.
???????????,?????????????. R-R??(????HR),SV,MBP??
TPR????.
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????????????????-?????????????(3)
ECG????,R??????. ?Z????,??????dZ/dt???.
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????????????????-?????????????(4)
????????,R??????,dZ/dt?50100?????????. ???????E
CG,dZ/dt????,Q?,B?,X??????.
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??1
IBI
11
??2
msec
ml
ml/100g/min
mmHg
dyne-seconds/cm-5
l/min
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????????????
new_env
acquit
?new_env?data??????????????? ?acquit.vi???,
??????????. ??????????????,????????????.
?????????????????
????????? ????
readit
???????????????????
user1
data
user2
?????????????
user3
user4
??????????????????
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channel 1 to 16 ?????????????18????916??????.?
?????????????????(?offline??,015??????)
MIKE/PCI-6034E ??????/AD?????????????????????
??, ?????????????.
??(ON)??(OFF)????ON???????????????????????.
scan order ???????????AD?????????????reverse????
????. normal ???????PC.1?8ch???????. reverse
????PC???.(??????,8?1?????????????????,??????
.)
offset ????. range 1V1????????? 1.00
???. ????????,????1V100mmHg?????,5V500?????
500.00 ???.
?????????????????????.
sampling rate (Hz) ?Hz?????????????????,???????
?? (read it) ?????????.???100????, read
it??100???????. ?ZCG??? (???????????offline)
?,????????1kHz?????????.?SV?????????????,?????????
??.
input Range ?????????.1V????5V???????????,32.7
68??????????. 5 5V 32.768 / -5V
-32.768 1 1V 32.768 / -1V
-32.768 ? ???????,100mmHg1V???,5???????!
accuracy ??????AD???????????????. 16bit
?????.1?????16bit 12bit ??PC?12bit
?????????????.??????????.
???
1. ? acquit.vi ? ????????
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???????? ???????????????????????????????????,
??????????????????????????.???????????????????????
??ON????????.
plug list ???????????????????.?????????????????,
?????????????. ???,ECG??HR???????,HR_plug?????.?
???????,IBI??????. HR?HR,IBI
BP?SBP,DBP,MBP,HR?? PEP?PEP,HR,IBI
Dummy?null(1-8) PV?Height,NPV,HR(top/bottom)
Resp?Rate,Inspt,height,delay
IP???? ????10???????????????????????????????.
???????????????????.
???? ??????????????????.
label ????????????,??????????????.??????????????
?.
min max ?????????????.0????????,????????????.
devices ????????????,????????????????????,??????
?????????.
ch ??????????????,??????????.
function devices???????????,???????????????.??
?????????????????.
2. ?acquit.vi ??? ?????/?????
memo ?????????.
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????????
???????????????.LabVIEW???????????????????????.
HR,BP ?????????????.????????????????.
????????????????.
???? ?????????.
?? ????.
event ???????????.
???????.
3. ?acquit.vi???????
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???????????????
?????????????.
PEP???????????,??,ECG?ZCG?????.
??ECG ??ZCG ???????dZ/dt
HR_plug
PEP?????,B????????????.??????????.
PEP_plug
BP_plug
4. ?acquit.vi?????? ?????????????
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??
offline??????
???????????
offset???????? ?????? length??????
?
length????????.
ECG ZCG (dZ/dt) ,BP??????
????offline???(?????)?????????????OK.
??????
SBP DBP
IBI,SBP,DBP,MBP,BF????,length??????????????.
add????????,????????. clear?????,????????. sa
ve???. ?????????????????????,???????????.
5. ?offline.vi?
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threshold ECG??????????????,?????.
lowpass ???????????????,??????????.
datadir ??????????????????????????.
6. ?offline.vi?
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B?,X? ?????????.
B?
X?
???SV???.
LabVIEW????? ECG????,R??????. ?Z????,??????dZ/d
t???. ????????,R??????,dZ/dt?50100?????????. ??
?????ECG,dZ/dt????,Q?,B?,X??????. ??????Kubicek??
??????,SV???. ???????????,?????????????. R-R??(?
???HR),SV,MBP??TPR????. (Kubicek????) SV?rho(L/Z
0)2LVETdZ/dt(max) rho (ohm?cm )135
(ohm?cm) ??????.??. L (cm)????????.25cm????.?
????. Z0 (ohm)?????????????????.
???????????? sensitivity ?,0.2???(??).
?offline.vi?
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direction upBP??????HR? downBP??????HR
?
brs ????
?????????????
?????????,1???????10????????????????
?offline.vi???????BRS???
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?readit.vi?