myself Kasim tomorrow i have seminar.....so i taught to do on antisleep alaram for students.........so i need detail explanation with tht neat sketch

Everyone knows about the alarms that abruptly wake us from our slumbers each morning, but have you heard of alarms that can keep us awake while we're driving? Anti-sleep alarms do more than simply startle and annoy drivers -- they can save them from fender benders or worse by alerting them if they start to nod off behind the wheel.

There are two types of anti-sleep alarms. The first type of alarm is built right into the car and uses sensors, cameras and other high-tech tricks to discern a driver's fatigue and correct the problem accordingly. The second type fits over the driver's ear and sounds an alert when the driver starts to fall asleep. While the in-car alarm systems are a recently developed feature that can add thousands of dollars to a car's sticker price, the over-the-ear alarm is both cheap and readily available. Drivers can find these for $10 to $20 under brand names like Nap Zapper, No Nap, and Doze Alert.