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We often have to loop around the back again and again, and then find that the vacant space just being occupied. Its annoying and time-wasting. Especially in holidays, it is a more serious problem.
In order to solve the aforementioned problems to facilitate the search for parking spaces, we set a parking lamp Here is vacant in the parking space. When the sensor senses that there is no car on it, the lamp will shoot the green beam to inform the finders that there is a vacant parking space. After the car is parked already, the sensor will sense that a car on it, and the beam will disappear and showing the statement of off.
National Cheng Kung University