21-07-2016, 02:05 PM
AUTOMATIC COLLEGE BELL
This Project takes over the task of Ringing of the Bell in Colleges. It replaces the Manual Switching of the Bell in the College. It has an Inbuilt Real Time Clock (DS1307)which tracks over the Real Time. When this time equals to the Bell Ringing time, then the Relay for the Bell is switched on.
The Bell Ringing time can be edited at any Time, so that it can be used at Normal Class Timings as well as Exam Times. The Real Time Clock is displayed on LCD display. The pic Microcontroller is used to control all the Functions, it get the time through the keypad and store it in its Memory. And when the Real time and Bell time get equal then the Bell is switched on for a predetermined time.
Abstract
Embedded Based Automatic College Bell System project is developed for the users to control Bell system in companies or institutions automatically. All the bell timings and durations are predefined and set in the microcontroller.
The user can set the timings using a key pad. A LCD display is used to display the timings. The timings set by the user are stored in the microcontroller.
At the particular time, signal is generated in the microcontroller and sent through the output port. The electronic circuit receives the signal and drives a corresponding relay. The relay is used as a switch to operate the Bell. As soon as the duration is over, the signal is stopped and waiting for the next set time.
This system is mainly used in Schools, Colleges and other companies where Bell system is implemented. There is no need of a person managing the bell timings.
The microcontroller program is written in Assembly Language. The microcontroller used is PIC 16F73
