ANTI SLEEP ALARM FOR STUDENTS

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While actually giving in to our body’s natural wants such as sleep, we’re keeping the balance beam in an upright and neutral position — generally a good thing to do. But life comes and calls quite often, many times forcing us to put hunger, drowsiness, and other basic human needs on the back burner in order to seal the deal and get the job done.

Ø  So here’s the scenario, you’re sitting in your car getting ready for a big meeting that if completed will net your company nice little multi-billion dollar deal. You’re supposed to be going over your notes and preparing yourself for this staple achievement. But instead, you find yourself doing the whole bobble head thing, getting dangerously to the steering wheel with each and every bob. If only there were something to keep you awake…

Ø  This circuit saves both time and electricity for students. It helps to prevent them from dozing off while studying, by sounding a beep at a fixed time interval, say, 30 minutes.

Ø  If the student is awake during the beep, he can reset the circuit to beep in the next 30 minutes. If the timer is not reset during this time, it means the student is in deep sleep or not in the room, and the circuit switches off the light and fan in the room, thus preventing the wastage of electricity.

Chapter: 2 Circuit descriptions

Ø This circuit saves both time and electricity for students. It helps to prevent them from dozing off while studying, by sounding a beep at a fixed time interval, say, 30 minutes.

If the student is awake during the beep, he can reset the circuit to beep in the next 30 minutes. If the timer is not reset during this time, it means the student is in deep sleep or not in the room, and the circuit switches off the light and fan in the room, thus preventing the wastage of electricity

Things Needed for Making this Antisleep Alarm

·         Relay

·         Bulb

·         Transistor or SCR

·         Push to ON /OFF switches

·         Resistance & capacitor

·         Pizzo buzzer

·         Diode

IC: IC CD4020

A Relay is an electrically operated switch. Many relays use an electromagnet to operate a switching mechanism mechanically, but other operating principles are also used. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits, repeating the signal coming in from one circuit and re-transmitting it to another. Relays were used extensively in   telephone exchanges and early computers to perform logical operations.