Hi,
A
very good morning to everyone.... I'm so bored so I decided to update my blog.
Yeayyyy blogging time! Okay let's see what to jot down this
time...
Hmmm...Recently, I just bought myself an Omron Automatic Blood Pressure
Monitor click here for the Omron HEM- 7111 specifications and please refer Figure 1 for the image of the BP set.
Figure
1: Omron Automatic BP Monitor HEM-7111
From my previous post, I've written
on the PCB layout for Blood Pressure circuit. So today, I am doing something
related to the previous post. I am going to crack open this BP monitor set.
Let's see what inside! Refer Figure 2 to see whats in it!
Figure
2: Take off the cover of the BP set
As
you can see in Figure 2, after I take off the cover of the BP set we can
clearly see that there are circuits jumble up in the BP box set and it looks
messy. So let's look at Figure 3, where I took everything out for a clearer
view of the components and circuit. It looks much better after everything is
taken out and was arrange nicely.
So,
here in Figure 3, we can see the LED screen, the main microcontroller and
sensor board (green colour PCB board), the motor set (consist of the tubings,
DC motor and solenoid valve), on and off switch button, battery holder and
finally the BP box set itself.
Figure
3: Take off everything in the BP set
Now,
from Figure 4, we can see the connection between the DC motor, solenoid valve
and the tubings for the motor set part only. I put the other stuffs aside as I
am not going to use it. The reason I bought the automatic BP set is actually
because I need the motor set with all the tubings, the arm cuff and the solenoid
valve.
Figure
4: DC motor, solenoid valve and other tubing used in the BP set
So
now, I will be using this motor set and will try to connect this motor set to a
PIC16F877A microcontroller in order to control the BP circuit (Figure 6). Later
on, I am thinking of adding another small circuit to the microcontroller board.
A relay switch circuit seems reasonable to be use to control the motor, but it
is not finalise yet, so I'm still thinking about it whether to use it or
not. :)
As
you can see in Figure 5, this is an arm cuff which is normally use together
with the BP monitor set. It is use for the Non- Invasive Blood Pressure (NIBP)
measurement method. This arm cuff will be connected to the pressure sensor
driving circuit.
Figure
5: Arm cuff (NIBP measurement)
The
issue now is that, the sensor that comes together with the automatic BP monitor
set (Figure 2) is not suitable to be connected with my new BP circuit (Figure
6). So, I have to find another pressure sensor as replacement.
Figure
6: The BP circuit schematic
So
that is all for today I guess! Keep in touch and enjoy my entry. Don't forget
to follow my blog......peace everyone ('.' )v
Adios
peeps... :) :p
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jArGoNs UsEd:
non-invasive: when no break in
the skin is created and there is no contact with the mucosa, or skin break, or
internal body cavity beyond a natural or artificial body orifice.
invasive procedure: is one which
penetrates or breaks the skin or enters a body cavity.
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QUOTE
of the day...!!!
Do what you can, with what you have, where you are.
~Theodore Roosevelt
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Regards,
Idriah
Safriza :)
