The study on the characteristic of charge and discharge of security alarm system battery with PIC

In this paper, we present the method that improves the alarm security system using electronic circuits added to the emergency lamp by our proposed algorithms. In the conventional method, the emergency of warning lamp and alarm system did not work perfectly because of batteries with short life. For improving this problem we, using peripheral interface controller IC (PIC), designed the circuit added to the emergency lamp for a warning and alarm system for preventing the electric current from stopping, and compared our proposed method with the conventional method. By designing the circuit to stop over-charge we can extend the life of the battery, use it for stopping of electric current in an emergency according to the tightness around it.