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Ecg Design

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  1. [1]
    ENG SH ELAMEEN
    ENG SH ELAMEEN غير متواجد حالياً

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    تاريخ التسجيل: Dec 2008
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    Ecg Design

    هذا الملف يحتوى على تصميم ل وECGوارجو ان ينفعكم وينال اعجابكم:):):):):)
    PROCEDURE

    Figure 5.11 Module of oscillometric blood pressure measurement.

    1. Experiment in Calibration of a pressure Sensor Driving Circuit

    Figure 5.12 Connection of the blood pressure meter and main controller.

    (1) Connect the connecting receptacles J1 and J2 of KL-73005 to the ،¥MODULE OUTPUT،¦ and ،¥MODULE INTPUT،¦ terminal of KL-71001. No connect-plugs connector is required between any two of the circuit blocks. Measure the output voltage of Vo1 with the Digital Meter.
    (2) Choose ،¥INPUT SELECT،¦ switch of KL-71001 to the input terminal of KL-73005 module. Connect both the sphygmomanometer and the input terminal IN6 to the pressure source with Y-shaped tubing, as shown in Figure 5.12.
    (3) Wrap the arm cuff around the PET blow bottle.
    (4) Before inflating the sphygmomanometer, adjust the SVR of CAL. to make the Vo1 output to be 3 Vdc.
    (5) Inflate the sphygmomanometer up to 200 mmHg, and adjust the SVR of GAIN1 to make the Vo1 output to be 5 Vdc.
    (6) Inflate the arm cuff to different pressure levels (watch the reading of mercury column) (according to Table 5.0), and record the Vo1 output in the space provided in Table 5.1 in Results.
    (7) Adjust the SVR of GANI1, and make the relationship between the Vo1 output and the pressure to be:

    (5.8)

    Repeat the step five times to ensure that the calibration of the pressure sensor is completely performed.
    (8) According to the data in Table 5.1, plot the relationship of the pressure to Vo1 in the space provided in Table 5.2 in Results.
    2. Experiment in Characteristics of High-Pass Filter 1

    (1) Connect the connecting receptacle J2 of KL-73005 to the ،¥MODULE OUTPUT،¦ terminal of KL-71001. No connect-plugs connector is needed between any two of the circuit blocks.
    (2) Connect the output of the function generator of KL-71001 to the input terminal ،¥1،¦ (i.e., TP) of KL-73005, and the ،¥GND،¦ of KL-71001 to the ground terminal of KL-73005. Adjust the sinusoidal frequency of the function generator to the maximum and its amplitude to 100 mVpp. Connect the output of the function generation to CH1, and the output terminal of ،¥HPF1،¦ to CH2 of the oscilloscope.
    (3) Change the frequency to different values, and record the output amplitude of the high-pass filer 1 in the space provided in Table 5.3 in Results.
    (4) According to the data in Table 5.3, plot the characteristic curve of the high-pass filter 1 in the space provided in Table 5.4 in Results.

    3. Experiment in Characteristics of A Low-Pass Filter
    (1) Connect the connecting receptacle J2 of KL-73005 to the ،¥MODULE OUTPUT،¦ terminal of KL-71001. No connect-plugs connector is needed between any two of the circuit blocks.
    (2) Connect the output of the function generator of KL-71001 to the input terminal ،¥2،¦ of KL-73005, and the ،¥GND،¦ of KL-71001 to the ground terminal of KL-73005. Adjust the sinusoidal frequency of the function generator to the minimum and its amplitude to 1 Vpp. Connect the output of the function generation to CH1, and the output terminal of ،¥LPF،¦ to CH2 of the oscilloscope.
    (3) Change the frequency to different values, and record the output amplitude of the low-pass filer in the space provided in Table 5.5 in Results.
    (4) According to the data in Table 5.5, plot the characteristic curve of the low-pass filter in the space provided in Table 5.6 in Results.
    4. Experiment in Characteristics of High-Pass Filter 2 and Amplifier
    (1) Connect the connecting receptacle J2 of KL-73005 to the ،¥MODULE OUTPUT،¦ terminal of KL-71001. No connect-plugs connector is needed between any two of the circuit blocks.
    (2) Connect the output of the function generator of KL-71001 to the input terminal ،¥1،¦ of KL-73005, and the ،¥GND،¦ of KL-71001 to the ground terminal of KL-73005. Adjust the sinusoidal frequency of the function generator to the maximum and its amplitude to 200 mVpp. Connect the output of the function generation to CH1, and the output terminal of ،¥Amplifier،¦ to CH2 of the oscilloscope.
    (3) Change the SVR of GAIN2 and make the output of the amplifier to be 5 Vpp.
    (4) Change the frequency to different values, and record the output amplitude of the high-pass filer in the space provided in Table 5.7 in Results.
    (5) According to the data in Table 5.7, plot the characteristic curve of the high-pass filter in the space provided in Table 5.8 in Results.

    5. Blood Pressure Measurement with A Stethoscope

    (1) Wrap the air cuff around an upper arm.
    (2) Locate the stethoscope on the brachial artery.
    (3) Close the deflation valve tightly.
    (4) Inflate the arm cuff up to 180~200 mmHg.
    (5) Open the deflation valve and keep the deflation rate between 3 and 5 mmHg/sec.
    (6) Record the cuff pressure (i.e., the systolic pressure) as the first sound is heard, in the space provided in Table 5.9 in Results.
    (7) Record the cuff pressure (i.e., the diastolic pressure) as the last sound is heard, in the space provided in Table 5.9 in Results.

    6. Blood Pressure Measurement with An Oscillometric Sensor (Registered mainly by a digital storage oscilloscope)

    (1) Connect the connecting receptacles J1 and J2 of KL-73005 to the ،¥MODULE INPUT،¦ and ،¥MODULE OUTPUT،¦ terminals of KL-71001, respectively. Use the connect-plugs connectors to connect the locations marked by ،¥1,،¦ ،¥2,،¦ ،¥3,،¦ and ،¥4.،¦ Connect the output terminal Vo1 to CH1, and the output terminal Vo2 to CH2 of the oscilloscope.
    (2) Connect PC1 to INT using the connect-plugs connector.
    (3) Use the ،¥INPUT SELECT،¦ switch of KL-71001 to choose the KL-73005 module (watch the LCD display unit). Instantly, the LED for IN6 on the KL-71001 panel will be ON. This means that the input signal must input to the input terminals. Connect both the sphygmomanometer and the input terminal IN6 to the pressure source with Y-shaped tubing.
    (4) Wrap the arm cuff of the sphygmomanometer around the right arm, as shown in Figure 5.2(a).
    (5) The input coupling mode of the oscilloscope is set at DC coupling. The voltage scale of CH1 is set at 0.5 and that of CH2 at 1 . The time scales are set at 2.5 .
    (6) Wrap the air cuff around the upper arm, and close tightly the deflation valve.
    (7) Inflate the arm cuff up to 180~200 mmHg.
    (8) Open the deflation valve and keep the deflation rate at 3~5 mmHg/sec. Use the oscilloscope to register the signals.
    (9) After the occurrence of the maximum oscillometric pulse, see if the present oscillometric pulse is a half lower than the maximum oscillometric pulse. If it happens, halt the recording of the oscilloscope, and record the waveform in the space provided in Table 5.10 in Results.
    (10) According to Table 5.10, find out the maximum amplitude (Amax). Search forward for the amplitude most approximating 0.5Amax and find out its corresponding DC voltage of CH1. Convert the voltage to pressure using Equation 5.7. The pressure is the systolic pressure. Record the pressure in the space provided in Table 5.11 in Results.
    (11) According to Table 5.10, find out the maximum amplitude (Amax). Search backward for the amplitude most approximating 0.75Amax and find out its corresponding DC voltage of CH1. Convert the voltage to pressure using Equation 5.7. The pressure is the diastolic pressure. Record the pressure in the space provided in Table 5.11 in Results.
    Note:
    A. In the experiment, it will be better to keep a constant deflation rate. And, the cuff pressure will never be allowed to be higher than 200 mmHg, avoiding the subject،¦s discomfort.
    B. Let each subject take a rest at least 3 minutes after any measurement. Continuous measurement is not allowed in the experiment. For reduction in interference, ask the subject to keep quiet and make no motion during the measuring period.
    C. Increase the gain of GAIN2 if the signal is too small to record it.

    7. Blood Pressure Measurement with An Oscillometric Sensor (Registered mainly by RS232 interface and PCs by a digital storage oscilloscope)

    (1) Connect the connecting receptacles J1 and J2 of KL-73005 to the ،¥MODULE INPUT،¦ and ،¥MODULE OUTPUT،¦ terminals of KL-71001, respectively. Use the connect-plugs connectors to connect the locations marked by ،¥1,،¦ ،¥2,،¦ ،¥3,،¦ and ،¥4.،¦ Connect the output terminal Vo1 to CH1, and the output terminal Vo2 to CH2 of the oscilloscope.
    (2) Disconnect PC1 to INT.
    (3) Use the ،¥INPUT SELECT،¦ switch of KL-71001 to choose the KL-73005 module (watch the LCD display unit). Instantly, the LED for IN6 on the KL-71001 panel will be ON. This means that the input signal must input to the input terminals. Connect both the sphygmomanometer and the input terminal IN6 to the pressure source with Y-shaped tubing.

    (4) Wrap the arm cuff of the sphygmomanometer around the right arm, as shown in Figure 5.2(a).
    (5) Connect the 9-pin RS232 cable to the communication port of the computer.
    (6) Execute the software related to KL-700 Biomedical Measurement System. Please read Chapter 0 for detailed installation and explanation.
    (7) The following picture will appear when the system installation is completed.



    (8) Wrap the air cuff around the upper arm, and close tightly the deflation valve.
    (9) Inflate the arm cuff up to 180~200 mmHg.
    (10) Push the RESET key of KL-71001 to let the system begin fetching signals.

    (11) Push the ،¥Acqu،¦ key to automatically open the following picture, i.e., the KL-73005 Blood Pressure Registration picture.



    (12) Properly adjust the VOLT/DIV and TIME/DIV buttons to appear the signal waveforms in the middle of the figure frame.
    (13) Open the deflation valve and keep the deflation rate at 3~5 mmHg/sec. Record the signal using the PC.
    (14) Push the STOP key to stop the recording when the mercury column decreases down to 10 mmHg and the readings of the systolic and diastolic pressures show up on the PC.
    Note:
    A. In the experiment, it will be better to keep a constant deflation rate. And, the cuff pressure will never be allowed to be higher than 200 mmHg, avoiding the subject،¦s discomfort.
    B. Let each subject take a rest at least 3 minutes after any measurement. Continuous measurement is not allowed in the experiment. For reduction in interference, ask the subject to keep quiet and make no motion during the measuring period. Increase the gain of GAIN2 if the signal is too small to record it.



    من مواضيع ENG SH ELAMEEN :


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  2. [2]
    glucose
    glucose غير متواجد حالياً
    عضو متميز
    الصورة الرمزية glucose


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    جزاك الله خيراً ولكن أين التصميم ؟

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  3. [3]
    المهندس مبروك
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    عضو


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    مشكووووووووووور ع التصميم

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  4. [4]
    محمدالقبالي
    محمدالقبالي غير متواجد حالياً
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    الصورة الرمزية محمدالقبالي


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    سبحان الله وبحمده -- سبحان الله العظيم


  5. [5]
    iraqmoon
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    thankssssssssssssssssss

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  6. [6]
    the small dragon
    the small dragon غير متواجد حالياً
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    تاريخ التسجيل: Apr 2009
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    sorry, not usefull without missing tables and missing figures
    olso this mistake was cause of web site manager

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  7. [7]
    اشرف عاشور محمود
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