Development of a Unique Electric Power Source Change-Over Notification Device

Abstract

A unique electric power source change-over notification device has been developed in response to the problem of unreliable power supply enabling possible uninterrupted power supply to sensitive electronic facilities. The device uses PIC16F628A microcontroller to monitor the system power changeover, a voltage sensor to detect the flow of electricity into the system, the buzzer outputs the warning sound to alert while the Global System for Mobile communication (GSM) module sends alert from Short Message Service (SMS) during power changeover. A 12Volts 7.2Amps power source serves as the emergency power supply for the circuit. The system has a response time of 44 seconds for activation of the buzzer and 69 seconds for the GSM module. The developed device has been evaluated to be capable of serving as add-on to electronic devices with zero tolerance to power failure; as required by sensitive electronic devices like medical, research and manufacturing facilities.