07-07-2012, 01:03 PM
Walking Stick With Heart Attack Detection
[attachment=27108]
Introduction
Why did we choose this topic?
Create an equipment to be used in everyday’s life for a medical purpose
Obtain the basic idea from “Wireless Heart Attack Detector with GPS” of Fall 2004
Most heart attack results from coronary artery disease (the restriction of blood flow to the heart) and it causes instant death of person
Objective
Goals of Design:
-The wireless heart attack detector captures abnormal heart beat signals.
-The alert system on the walking stick warns the user to realize his health condition.
-Bluetooth wireless emergency calling system calls for help at the moment of heart attack via mobile phone.
Original Design Review
Obtain ECG waveform from both wrists.
Transmit ECG waveform wirelessly from wrist to a receiver on the stick.
Microcontroller on the stick will run a heart attack algorithm to detect possible heart attack.
Microcontroller will make the user’s cell phone to call 911 if heart attack detected.
Components and Functions
ECG Analog Circuitry
– to obtain analog ECG waveform from wrists
1. Unity-Gain Buffer.
As Impedance Transformer. Skin impedance is high and Op-Amp’s input impedance is infinity.
2. Differential Amplifier.
Taking the difference between two bio signals from both wrists and output the ECG waveform with desired gain.
[attachment=27108]
Introduction
Why did we choose this topic?
Create an equipment to be used in everyday’s life for a medical purpose
Obtain the basic idea from “Wireless Heart Attack Detector with GPS” of Fall 2004
Most heart attack results from coronary artery disease (the restriction of blood flow to the heart) and it causes instant death of person
Objective
Goals of Design:
-The wireless heart attack detector captures abnormal heart beat signals.
-The alert system on the walking stick warns the user to realize his health condition.
-Bluetooth wireless emergency calling system calls for help at the moment of heart attack via mobile phone.
Original Design Review
Obtain ECG waveform from both wrists.
Transmit ECG waveform wirelessly from wrist to a receiver on the stick.
Microcontroller on the stick will run a heart attack algorithm to detect possible heart attack.
Microcontroller will make the user’s cell phone to call 911 if heart attack detected.
Components and Functions
ECG Analog Circuitry
– to obtain analog ECG waveform from wrists
1. Unity-Gain Buffer.
As Impedance Transformer. Skin impedance is high and Op-Amp’s input impedance is infinity.
2. Differential Amplifier.
Taking the difference between two bio signals from both wrists and output the ECG waveform with desired gain.