My Projects

(1 Heart-Beat Monitor"  (Project"

A-General

The term Cardiac Cycle refers to the events of one complete heart beat during which both atria and ventricles contract & then relax
The average heart beats approximately 75 times per minute
The Length of the cardiac cycle is normally about 0.8 Sec
Cardiac Output (CO) = HR (75 beats/min) * SV (70 ml/beat)
                                          5250 ml/min=

B- Circuit
Converter (Mic.) (Picks up the Heart Sound signal & Convert it into voltage signal)
Differential Amp. (Amplify the difference between 2 signals)
Non-inverting Amp. (To control the gain, stabilize the amp. & reduce the sensitivity)
High-pass Filter (Pass the high frequency)
Buffer (Match the impedance of amp. to the impedance of the  output device)

(Project 2-3) "Fluid Flow Meter"

A- General
Digital instrument, which determines electrically the flow rate of The fluid, is designed, analyzed & implemented
The meter based on the number of revolution per minuets by cutting infrared beam with a rate proportional to the speed of the fan. The obtained results (reading) can be calibrated through a specific design equation

= flow rate
min    
         
     volume * No. of cuts * No. of  time periods
                        cut              time period          min


B- Circuit
Infrared Tx & Rx (Emits infrared light in response to a sufficient forward current)
Fan (The fan, which use, has got a bar tied up with the spindle that crosses the IR beam 6 time in a revolution)
Clock (Produce square pulses)
Counter  (Receive Pulses from clock & counted)
D Filp-Flop / latch (For temporary store of data)
Decoder (Converts information from one coded form to another & to address memories)
Display (To make visible the reading of a digital Instrument)