12-04-2012, 01:58 PM
we want report of topic walking stick with heart attack detection
12-04-2012, 01:58 PM
we want report of topic walking stick with heart attack detection
16-07-2012, 11:10 AM
to get information about the topic "Multiple routing for fast network recovery" related topic refer the link bellow
https://seminarproject.net/Thread-walkin...-detection https://seminarproject.net/Thread-walkin...9#pid94599
06-11-2012, 01:03 PM
Walking stick with Heart Attack Detection Walking stick.doc (Size: 91 KB / Downloads: 28) ABSTRACT: The Walking Stick with Heart Attack Detection is equipment that is used daily to indicate heart condition, to detect heart attack and to call for emergency help.It was designed specially to help senior citizens and patients with heart disease.It consists of three basic sub projects Ecg Circuit, Analysis Algorithm and Bluetooth Communication. The first unit is worn on the user’s wrist captures abnormal heart beat signal from the patient., and the rest two are installed in the stick..The microcontroller on the stick runs a heart attack algorithm. Warning is given out . INTRODUCTION: The National Heart, Lung, and Blood Institute states that “more than 3million persons in the India have a heart attack and about half of them die in each year. About one-half of those who die do so within 1 hour of the start of symptoms and before reaching the hospital”. A heart attack happens to a person when the blood flow and oxygen supply to heart muscle is blocked, and it is mostly caused by the Coronary Artery Disease (CAD).CAD occurs when the arteries that supply blood to the heart muscle (coronary arteries) become hardened and narrowed .It often causes irregular heart beat or rhythm by blocking blood stream .The National Heart, Lung, and Blood Institute suggest that “everyone should know the warning signs of a heart attack and how to get emergency help”. Specifications: For the design of the ECG circuitry and the ECG algorithm, the specifications of the previous project “Wireless Heart Attack Detector with GPS” were used.The frequency range of ECG signal depends on the activity of individual. DESIGN PROCEDURE Biosensors Since the previous project mentioned about the benefits of the Ag-AgCl ECG electrodes, we decided to use the same electrodes as our biosensors. The benefits of the electrodes include good electrical contact with human skin, low motion artifacts and strong adhesive quality to skin. Analog ECG Circuitry Based on the “Wireless Heart Attack Detector with GPS”, we designed the three components, unity-gain buffers, differential amplifier and band-pass filter. The unity-gain buffers are needed for both wrists as impedance transformers. Although skin impedance is high, the input impedance of op-amps is infinity and the op-amps will be able to catch the bio signals out of the two electrodes. Differential amplifier will take the two bio signals and differentiate them with gain to get the desired ECG waveform. Band-pass filter will make sure that noise of frequencies outside 0.5 Hz and 150 Hz is eliminated. Data Transmission between Wrist and the Walking Stick Our original design was to transmit the analog ECG waveform directly out of the ECG analog circuitry to the walking stick. We would use the analog signal transmission capability of the HP-3 transceiver. We wanted to make this data transmission wireless from the wrist to the stick. This would avoid the inconvenience of the stick attachment to the wrist. User can go into a car and put his stick at the back seats without detaching any wire between his wrist and the stick. He also does not have to switch the device off. When the stick falls down, it won’t drag the user’s wrist to the ground. After we browsed through the data sheet of the HP-3 transceiver, we discovered that the analog bandwidth of the transceiver pair is between 50 Hz and 28000 Hz. ,normal ECG waveform has frequency range between 50 Hz and 70 Hz. However, to cover all the possible scenarios like sleeping and fast walking, |
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