The purpose of Home-care Telemedicine System is to develop a
wireless-based tele-homecare system which will allow patients to measure their vital signs, such as blood pressure and their electro cardiogram (ECG), and give doctors and other healthcare professionals the ability to remotely monitor the patient's vital signs quickly and easily.
The system is designed to be able to link patients with their doctors or other healthcare professionals by wireless transmitter and receivers.
Homecare is the provision of health services
to a patient in their own home. The purpose of Home-care Telemedicine System is
to develop a wireless base system which will allow patient to measure their
vital signs, such as blood pressure and electro cardiogram (ECG), and give
doctors and other health care professionals the ability to remotely monitor the
patient's vital signs quickly and easily. There are four major parts involved in
developing the Home-care Telemedicine System. The first part involves the two
vital signs measuring devices. The Omron HEM 705CPN blood pressure monitor is
used to obtain the patient's blood pressure. A patient can enter their blood
pressure manually into the system using a keypad. Since the ECG device is
too expensive to purchase an alternative is to buy the ECG electrodes and build
an amplifier to attain the ECG signal. The PIC16C74A micro-controller is used to
collect the data from the two devices, interpret it and then send it to a
transmitter. A high performance RF Module TXM-900-HP-II transmitter and receiver
are used to transmit and receive data from the micro-controller to the hospital
computer wirelessly. The final part is to developed a GUI (Graphic
User Interface) using Microsoft Visual Basic 6.0 to display the incoming data
for the doctor's and other health care professional to examine.
Method of Completion
Developing a working Home-care Telemedicine System required team
works. Khoi Nguyen is responsible for the programming the micro-controller and also for the software for
the GUI to display the data on the computer screen. Khoi Nguyen's other responsibility is to
develop a keypad that allow patients to enter their blood pressure manually. The
ECG amplifier will be interfaced to the micro-controller. Ricardo Isais is responsible for
building the amplifier for the electro cardiogram (ECG) scope with the help of Gabriel Perez. Gabriel
Perez is responsible for the wireless communication. This involve interfacing the transmitter
to the micro-controller and the receiver to the computer. All team's
members are responsible for troubleshooting and assembling the completed project.
The major issue that the team had to overcome is how can the blood pressure
data be send into the micro-controller. It is very difficult to send the
data from the blood pressure measuring device straight to the micro-controller
because information on almost all commercial products are secret.
Block Diagram of Complete
In conclusion, the project was
completed according to the required specifications. The system
successfully transmitted three signals wirelessly from one room to a computer in
another room. The GUI display all three signals on the computer.