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Electronics AS coursework Aim To design and build a proximity detector for the rear of a car that is used when it is parking. The sensor's main objective is to decrease stress for the driver and make the task of parking easier and quicker. The sensor will use ultra sound to detect close objects. Initially the project will produce a simple mechanism to portray the idea, which then can be developed. For example the feedback to the driver could just be a buzzer that comes on when the car is too close. Research I chose to use ultra sound in my sensor, because I have had no experience with the components so it would be a good research topic and hopefully prove to be interesting. The transmitter sends out the high frequency pulses, which reflect off of objects and are detected by a receiver. The longer the time between the emission and detection the...

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