Department Announcement System ECE Project Abstract

Abstract

In most of the institutes, announcements are coming under the major problem. A universal announcement by speakers is mostly deployed in most of the institutes, but there are cases when the announcement needs to be done for a particular classroom or for a particular person.

In that case, such a universal system will not be helpful. One resolution of this problem most of the institutes adopt is deploying one universal system and a separate system for each room and then place people to handle the entire control system.

Though this resolves many issues, it increases the cost of the entire control unit when you have to be dependent on human resources. Automation is one of the most thriving of today’s technology through which many organizations are cutting costs on Human Resources and utilizing human resources in more innovative and productive works.

So here for this issue also we have come up with automating the entire process of announcement where a pre-recorded voice will be played for every announcement in the institutes.

Block Diagram:

Communication channel box :

In this communication channel box signals from the desktop will be received to microcontroller and microcontroller will send a signal to relay driver  IC (ULN2803)  to switch the relay.

Relays —— SPDT.
Voltage —–12V

Purpose of the relay is to channelize the sound for each classroom.

Amplifier box

This box will receive the signals from mic where we speak and sound is amplified and sent to relay channel junction box.

Advantages

• Human effort is reduced.
• Time to convey the things can be done in a more faster phase.
• They won’t be any communication gap with this setup.
• We can communicate in multiple classrooms at one time.
• We can know the delivery report of a speech delivered to the classroom or not with help of feedback button in each classroom.