Method for controlling the vertical position of a vehicle and associated control assembly

A method for controlling a position of a floor of a carriage of a railway vehicle moving on rails, relative to a platform from among a plurality of platforms, the carriage comprising a body comprising the floor, at least one bogie, and at least one suspension interposed between the body and the bogie, the method comprising:

• determining a level difference between the actual position of the carriage relative to the platform and an expected position of the carriage relative to the platform, comprising:
• capturing an image of at least one predetermined pattern comprised on the platform, with a camera borne by the body, the at least one pattern comprising at least two recognizable parallel lines;
• comparing the captured image with a reference image of the at least one pattern of the platform stored in a memory;
• determining a vertical distance between one of the lines and an upper edge of a frame of the image;
• comparing the vertical distance to a reference vertical distance between the same line and an upper edge of the reference image;
• and
• calculating a vertical displacement based on the comparing the captured image and on the comparing the vertical distance, to determine the level difference;
• and
• adjusting a height of the suspension for compensating the determined level difference.