Abstract: This invention concerns a shutter system comprising, firstly, drive systems allowing the movement of the shutter (1) along a path between a closed and an open position, said shutter (1) being intended to close an opening (3) or other aperture and, secondly, detection systems (16) allowing determination of deflection of the shutter (1) from its path, for example due to the presence of an obstruction (13) below the shutter (1), during its movement into its closed or open position, the detection systems (16) combining with the drive systems in such a way as to permit stopping or opening of the shutter (1), each of the side edges of the shutter (1) running in a guide track (9). This system is characterised by the fact that the detection systems (16) are fitted in such a way as to be able to combine them with the guide track (9) in order to detect whether the shutter (1) is deflected from its path in the vicinity of the guide track (9).