Parking sensor based on AVR microcontroller

Zbog sve većeg broja automobila i nedostatka parkirnih mjesta, posebice u gradovima, razvila se potreba za parking senzorima kako bi se olakšalo parkiranje u uskim i malim prostorima. U tom smjeru napravljen je i ovaj rad, odnosno sklop koji mjeri udaljenosti i ispisuje ju na zaslon, parking senzor. Glavna komponenta sklopa je ultrazvučni senzor udaljenosti. On ima široku primjenu, kako u elektronici kao komponenta, tako i u većini današnjih automobila kao parking senzor. Sklop se sastoji od sljedećih komponenti: Atmega16 mikroupravljač, senzor udaljenosti HC-SR04, zujalica i 16x2 LCD. Kako bi sklop služio kao parking senzor napisan je funkcionalan kod koji to omogućuje. Sustav je na kraju i testiran. Testiranjem je utvrđeno da je sklop precizan i točan, posebice na umjerenim temperaturama (22 ºC). Mala odstupanja su na temperaturama iznad 40 ºC. Također mjerenja ovise o svojstvu materijala od kojeg se val odbija. Što je gušći i tvrđi materijal, mjerenje je točnije. Kada parkiramo automobil, objekti koji nam smetaju su većinom zid ili drugo vozilo. S obzirom na to, možemo reći da je sklop prikladan za uporabu u stvarnom okruženju.Due to the increasing number of cars and the lack of parking spaces, especially in cities, the need for parking sensors has evolved to facilitate parking in narrow and small spaces. In this direction, this work was also made, device which measures the distance and writes it on the screen. The main component of the device is the ultrasonic distance sensor. It has a wide application, both in electronics as a component and in most modern cars as a parking sensor. The device consists of the following components: Atmega16 microcontroller, HC-SR04 distance sensor, buzzer and 16x2 LCD. In order for the device to function as a parking sensor, a functional code is written that allows it. The system was finally tested. Testing found that the device is accurate, especially at moderate temperatures (22 ºC). Small deviations are at temperatures above 40 ºC. Measurements also depend on the properties of the material from which the wave is reflected. The more denser and harder the material, the measurement is more accurate. When we park the car, objects that bother us are mostly wall or another car. Considering this, we can say that the device is suitable for use in the real environment