PREPARING THE SYSTEM OF EYE DETECTION AND ACCIDENT PREVENTION

                

WEEK 5 

                             PREPARING THE SYSTEM OF EYE DETECTION AND ACCIDENT PREVENTION 

The development of this projects are divided by 2 which is hardware part and also software part. The above  figure is the block diagram of eye detection and accident prevention projects.The methodology shows the process flow that will happen for this project construction. For the first stage , the eye blink will be detect by using IR sensor as sensor to detect eye blinking . the IR sensor are divided into 2 part which is IR transmitter which used to  transmitted the infrared rays to our eye and the reflected ray will be received by IR receiver. IR transmitter and IR receiver must be mounted at the straight line to each other. This is because the further distance between emitter and receiver will decrease the amount of infrared light hitting on emitter. The IR sensor will be mounted at the LM358 comparator which The comparator is constructed with LM 358 operational amplifier. In the comparator circuit the reference voltage is given to inverting input terminal. The non inverting input terminal is connected IR receiver. When interrupt the IR rays between the IR transmitter and receiver, the IR receiver is not conducting. So the comparator non inverting input terminal voltage is higher then inverting input. Now the comparator output is in the range of +5V. This voltage is given to  microcontroller or PC and led so led will glow.  the output from the sensor will be send to the microcontroller. If the eye is closed means the output of IR receiver is high otherwise the IR receiver output is low. This to know the eye is closing or opening position.  If the eye are still in ‘0’ conditions which means that the eye is still opening the sequence will be repeated until the output of receiver is “1” , then if the output of IR receiver is “1” the the microcontroller will send the signal to the output ehich is indicare by the LCD which is the function is to tell the behind people to be ware with this vehicle because the driver in the drowsiness condition, LED will indicate the emergency lamp and the function will be benafit to the othe vehicle and also alarm which will make sure that the driver will wake up .