Wireless power transfer system

A wireless power transfer system that supplies electric power to a vehicle in which an electric power receiving coil capable of receiving wireless power transfer is incorporated, a bottom part of the vehicle being provided with a mark at a position corresponding to a position of the electric power receiving coil, the wireless power transfer system comprising:

• a station that the vehicle is capable of entering and leaving;
• and
• a bottom part photographing apparatus provided at the station and capable of photographing the bottom part of the vehicle, wherein
• the wireless power transfer system:
• photographs, using the bottom part photographing apparatus, the bottom part of the vehicle when the vehicle is located at the station;
• and
• extracts from an image of the bottom part of the vehicle photographed by the bottom part photographing apparatus, coil position information that indicates information about the position of the electric power receiving coil in the vehicle based on a position, inside a contour of the bottom part of the vehicle, of what matches a preset mark that is a mark preset in advance.

A wireless power transfer system that supplies electric power to a vehicle in which an electric power receiving coil capable of receiving wireless power transfer is incorporated, the wireless power transfer system comprising:

• a station that the vehicle is capable of entering and leaving;
• and
• a plurality of bottom part detection sensors having a detection unit capable of detecting an object that enters a detection range, and provided at the station and arranged to be spaced apart from each other so that the detection unit detects the vehicle from a front end to a rear end in a front-rear direction of the vehicle, each of the plurality of bottom part detection sensors being configured to output a bottom part detection signal corresponding to a portion, which enters the detection range, of a bottom part of the vehicle, wherein
• the wireless power transfer system:
• outputs, using the plurality of bottom part detection sensors, a respective plurality of the bottom part detection signals when the vehicle is located at the station;
• and
• extracts, from a position dependence of the bottom part detection sensor of the respective plurality of bottom part detection signals, coil position information that is information about a position of the electric power receiving coil in the vehicle.