25-08-2017, 09:32 PM
Embedded Patient Monitoring System
Embedded Patient.pdf (Size: 1.08 MB / Downloads: 40)
ABSTRACT
The aim of this project is to inform the doctor about the ICU patient condition through wireless. For the
medical professionals it becomes important to continuously monitor the conditions of a patient. In a large
setup like a hospital or clinical center where a single doctor attends many patients, it becomes difficult to
keep informed about the critical conditions developed in each of the patients. This project provides a device
which will continuously monitor the vital parameters to be monitored for a patient and do data logging
continuously. If any critical situation arises in a patient, this unit also raises an alarm and also
communicates to the concerned doctor by means of an SMS to the doctor.
Introduction
This is an attempt to provide a device which will continuously monitor the body temperature and
status of drip status of the patient. If either the temperature goes high or if the drip administration
fails, this device will raises an alarm and communicate the concerned doctor by means of sending
SMS to the doctor. The major part of this project is the hardware model consisting of sufficient
sensor with embedded system.
Mobile and PIC Interface
A mobile phone is hooked to microcontroller/PC and F-bus command set is used for issuing the
send SMS command from the microcontroller. F-bus is a high speed full duplex bus. It uses pin 1
for MBUS, pin 2 as ground, pin 3 for receiving data and pin 4 for transmitting the data. The F-bus
is bi-directional serial type bus running at 115,200 bps, 8 data bits. The serial cable contains
electronics for level conversion and therefore requires power. For this the DTR(data terminal
ready) pin is connected to +3 to +12 Volts supply and RTS pin is connected to -3 to -12volts
supply by using MAX232 for the RS232 TX and RX pins. The next step is to synchronize the
UART in the phone with the PC or microcontroller. This is done by sending a string of 0x55 or
‘U’ 128 times.
. Conclusion
This paper presents the embedded intensive care unit using PIC microcontroller. The project is
monitoring the patient’s body temperature and the status of drip administered and makes data
logging (on PC) and reporting/alerting (using cell phone).The availability of in-built A/D
converter inPIC16F877A has been very useful in the easy implementation of the digital
temperature measurement. The chip used in this project (PIC16F877A) contains 8 analog
channels, of which we have used only one for temperature measurement. In the actual scenario in
a hospital , there are many other vital parameters to be monitored in a patient like heartbeat,
pulse rate, breathing and ventilator activity etc. this project can further be enhanced or improved
by adding facilities to monitor the above mentioned parameters too. In that case the additional
analog input channels will be of great use.