Block Diagram of Home Apnea Monitor

Explanation of Block Diagram

The block diagram above is the overall system of the Home Apnea Monitor using Stretch sensor. This project control by PIC  microcontroller program. According to the block diagram, this project has built by two sections. The first section is master controller and master device. The second section is called Apnea belt, which is include stretch sensor and vibration motor.

If stretch sensor have no contraction happened, signal will send to PIC microcontroller. Counter will start to count from 0 to 20 second. If system has received below than 15 second, the system will be cut off the signal from stretch sensor. If systems have received more than 15 second, buzzer and vibration motor will be ON. When the baby breathing back to normal, the buzzer and vibration motor will be reset by programming system.