help again

[downloaderer]

parang awa nyo na oh

http://cache.freescale.com/files/sensors/doc/app_note/AN1571.pdf

baket ba kase dun sa figure 4 sa may pang walong pulse nya kinuha ung SBP(diba dapat sa unang pintig palang) at ung DBP baket ba hindi dun sa pinakamababa ung kinuha ang gulo po talaga! kaya d ako makaisip kung papano sha iproprogram eh

pati ung pinagsasasabi nya sa op amp nanonosebleed ako... huhuness :'(  :'(  :'(  :'(  :'(

kahit sinong masters jan parang awa nyo na..

[insomartin]

dapat at lease may serial port ang mcu nyo and somehow plot this back to excel.
and a nurse to check if ok ang measurement (side by side comparison)

walang sinabi sa app note paano icalibrate or kunin or sistolic/diastolic pressure. (play safe ata sila)
citation needed kasi nagscan lang ako.

follow the schematic diagram. and interfacing. sinasabi na sa appnote lahat nahalos nang kailangan mo gawin. 

[insomartin]

parang digital signal oscilloscope. di nya didinidiscard ang data after MAP. Post trigger nang sistolic pressure.
sa appnote 150 bytes of ram lang ang gamit nila but enough to get a peak pressure reading.

[downloaderer]

dito po ako naguguluhan po oh

[insomartin]

dito po ako naguguluhan po oh

that's what i'm pointing out. manligaw ka nang nurse paturo ka mag pa bp. then mas maiintindihan mo kung saan pumapasok ang sistolic at diastolic sa "pandinig" nya. trust me on this one.

[insomartin]

Figure 4 na mismo yung maririnig mo sa steho mo. kung lalagyan mo ito nang microphone ito makikita mo sa oscilloscope.

[insomartin]

divisible by 20 ang sinasabi nang nurse na bp...
average blood pressure of 112/64 mmHg
pero sasabihin sayo 120 over 60...

[downloaderer]

pero un nga po ang turo sakin is dapat daw dalawang pintig dapat ang maririnig sa una at dun mag iistart ang pagsusukat.. baket jan andaming pintig na pinagdaanan bago makuha ung systolic(sabi daw kase jan voltage>1.75V ang isang pintig diba po) kaya parang kinokontra ung tinuro sakin kya po nalalabuan ako eh..

[downloaderer]

ano ba talaga above 2.5V or above 1.75V?

[???]

Alam ko unang pintig. Kaya yung ibang madaya naset sa 150 or 140 pressure tapos two try minsan. Halimbawa nagunang pintig sa 120, pump yan uli at set to 130 pressure to confirm. Then sa diastolic yung pinkahuling malakas na pintig. IIRC manual method.

[insomartin]

pero un nga po ang turo sakin is dapat daw dalawang pintig dapat ang maririnig sa una at dun mag iistart ang pagsusukat.. baket jan andaming pintig na pinagdaanan bago makuha ung systolic(sabi daw kase jan voltage>1.75V ang isang pintig diba po) kaya parang kinokontra ung tinuro sakin kya po nalalabuan ako eh..

ayan din ang sinasabi ko sayo. humanap ka nang doctor or nurse. kung ano ang ituro sayo dun ka base.

yet still. kailangan mo pa din mag calibrate mismo sa mercury column or standard pressure guage. that's for figure 3. 

[???]

Ito yata.

First of all, the threshold level of a valid pulse is set to be
1.75 V to eliminate noise or spike. As soon as the amplitude
of a pulse is identified, the microcontroller will ignore the signal
for 450 ms to prevent any false identification due to the
presence of premature pulse "overshoot" due to oscillation.
Hence, this algorithm can only detect pulse rate which is less
than 133 beats per minute.

[downloaderer]

Ito yata.

First of all, the threshold level of a valid pulse is set to be
1.75 V to eliminate noise or spike. As soon as the amplitude
of a pulse is identified, the microcontroller will ignore the signal
for 450 ms to prevent any false identification due to the
presence of premature pulse "overshoot" due to oscillation.
Hence, this algorithm can only detect pulse rate which is less
than 133 beats per minute.

jan ako nanonose bleed po pati.. bat parang iba ung sinasabi nung sa figure 4 mas malaki pa nga sa 1.75 hindi parin un eh..

[insomartin]

Ito yata.

First of all, the threshold level of a valid pulse is set to be
1.75 V to eliminate noise or spike. As soon as the amplitude
of a pulse is identified, the microcontroller will ignore the signal
for 450 ms to prevent any false identification due to the
presence of premature pulse "overshoot" due to oscillation.
Hence, this algorithm can only detect pulse rate which is less
than 133 beats per minute.

threshold ito eh... kapag may "overshoot" naturally bpm mo is x2 agad.

[???]

Kailangan nito nurse at isang technician ng ecg or electrocardiogram. To analyze ng pulses. Mas sanay sila kasi nakikita nila pati yung time na nawawalan ng pulses ang puso.

[insomartin]

0.2 Vdc at 0 mm Hg
4.7 Vdc at 375 mm Hg
of applied pressure

ok that's for CUFF PRESSURE. in FIGURE 3. ADC1 yan nang microcontroller mo
(friends sila at closely related sa figure4... don't leave this behind.)

for FIGURE 4. which is PULSE RATE, PEAK ATERIAL PRESSURE AND S/Dbp mo makukuha.

Wait lang to be continued muna ako. kain lang muna dinner.

[insomartin]

Kailangan nito nurse at isang technician ng ecg or electrocardiogram. To analyze ng pulses. Mas sanay sila kasi nakikita nila pati yung time na nawawalan ng pulses ang puso.

di kailangan nang technician for this.
once calibrated ang CUFF pressure ok na ito.
walang kinalaman ang ECG sa BPM. trabaho ito ni tita born2bewired. (precision analog circuits)

btw. di nakikita ang blood pressure sa ecg. electrical impulse lang nang buong puso ang nakikita sa ecg.

[downloaderer]

threshold ito eh... kapag may "overshoot" naturally bpm mo is x2 agad.

nosebleed parin po..

siguro mas tamang tanong is ano ba talaga kukunin ko sa analog input ko pag may pintig na nadetect? voltage ba nung op amp at ilan ba ang minimal? mashado po kaseng mabilis ung biglang pagtaas nung voltage kaya d ko makita po eh..

[insomartin]

^ antayin mo reply ko excited ka eh. hehehe.
kelangan mo nang serial port at excel or any graphing software. mathlab or labview. pero ok na ko sa excel.

[downloaderer]

^ antayin mo reply ko excited ka eh. hehehe.
kelangan mo nang serial port at excel or any graphing software. mathlab or labview. pero ok na ko sa excel.

haha! sori po nauna muna reply bago ko po mkita ung to be continued na post nyo