critical health care system
DESCRIPTION
Critical Health Care System. Shankar Somasundaram,Aditya Sane,Neelesh Mundra,Kunal Mundra CSIDC VESIT,Mumbai,India. Need for System and Parameters Measured. Health care for the masses in a densely populated country like India Critical health care parameters :- Respiration Rate - PowerPoint PPT PresentationTRANSCRIPT
Critical Health Care System
Shankar Somasundaram,Aditya
Sane,Neelesh Mundra,Kunal Mundra
CSIDC
VESIT,Mumbai,India
Need for System and Parameters Measured Health care for the masses in a
densely populated country like India
Critical health care parameters :- Respiration Rate Oxygen Saturation ECG
Block Diagram of the System
Block Diagram components Breathing rate, Oxygen Saturation and
ECG are sensors used Micro-controller used to multiplex and
send signals to Level shifter Level shifter converts TTL to RS323
values Demultiplexed at receiver side . Compared with values in database to
check condition of signal and transmitted over the internet
ECG Contraction of atria is
associated with ECG called P
Q,R,S and T associated with ventricles
Abnormalities in ECG relates to difference in these 5 waves
Next slide shows abnormalities in ECG
ECG ( continued) Wavelet transform would be used to
analyse the ECG signal since it can resolve both time and frequency components of the signal
Wavelet transform require fewer terms to represent a signal and does not require time synchronization like FFT does.
For the project the ECG sensor was not built and ECG waveforms were painfully got from hospitals and analysed
ECG signal [ bottom] and the Wavelet transform [top]
Oxygen Saturation
Oxygen Saturation[Continued] Pass red light through a earlobe Bright red oxygenated blood will
absorb most of the red light,deoxygenated blood won’t
Visible red light LED[640nm used] To compensate for ear
thickness,light source working at infrared used
Oxygen Saturation[Continued] ADC was a 2-channel 8 bit device
compatible with 89C52 micorcontroller Micro-controller reads data at 1ms
duration and measures differential attenuation of the 2 signals to cancel external signals
Lots of design considerations were made to select each of the IC’s for the hardware[ not mentioned here]
Limitations of oxygen Saturation Carbon Monoxide poisoning will
cause the blood to change to bright red colour which the system won’t detect.
Strong drugs affecting blood colour will interfere with the system
Respiration Rate
Respiration Rate [continued] Breathing rate monitored by
thermistor Instrumentation amplifier used
since low noise amplification was required of the signal
Schmitt trigger converts signal to square wave
Micro-controller counts number of breaths
Respiration Rate [continued] Lots of design considerations were
made when the IC’s for thermistor and Instrumentation amplifier was chosen
Multiplexer Oximeter samples data every 2 ms
and transfers data to port 0 of 89C52
Every 1 s ,data from breathing rate comes to port 1
89C52 switches between port 0 and 1 at these instants and transfers data to pin Rx
Applications Sudden Infant Death syndrome :- Infant
suddenly stops breathing Geriatrics :- Can be used to monitor
health of old patients from home In Sports where efforts have been on, to
have the runners run on the tracks and measure their ECG to monitor their health.Extra parameters can be measured with this application
Cost to build the application [without the ECG sensor]
Future of health care The critical health care link system
might be in the direction of the future of health care