System for locating parking floor in the building using slope sensor

PURPOSE: A system for figuring out a floor in which a vehicle is parked using a slope sensor is provided to measure the parked position of a vehicle using a slope sensor attached on the vehicle without an additional measuring device in a parking structure. CONSTITUTION: A system for figuring out a floor in which a vehicle is parked using a slope sensor comprises a slope sensor(200), an in/out determination unit(410), a controller(300), a data transmitting and receiving unit(400), and a guide unit. The slope sensor measures the inclination of a vehicle. The in/out determination unit receives a signal sent from outside, and determines whether the vehicle is in or out. The controller measures the inclined amount of the slope sensor. The data transmitting and receiving unit transmits parked position information of the vehicle to outside. The guide unit has a receiving device and a display unit.