Abstract: This device may include two parallel rollers which work the skin and which are mounted in a casing so as to rotate about their respective axis. To reliably and effectively treat skin by aspiration, without using excessive vacuum levels, at least one of the rollers may be hollow and delimit transverse aspiration passages. These passages may have an outer end, which opens out on the periphery of the roller, and an inner end which, when the outer end is directed towards the skin, is connected to a vacuum source via a control means inside the roller. These passages may be distributed about the periphery of the roller such that, for each position of the roller, at least one passage has its outer end directed towards the skin and its inner end in fluidic communication, via the control means, with the inner end of at least one other of the passages.

Abstract: Method of detecting vehicles on at least one stretch of a carriageway implementing at least two types of detection chosen from: a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway; an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway; a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected, and comprising at least one step of processing the results of the optical and/or sound and/or radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle.

Abstract: Method of detecting vehicles on at least one stretch of a carriageway implementing at least two types of detection chosen from: a video detection comprising a step of acquiring and processing the video images of at least one zone, termed the video monitoring zone, of the stretch of carriageway; an acoustic detection comprising a step of acquiring and processing the sound originating from at least one zone, termed the acoustic monitoring zone, of the stretch of carriageway; a radar detection comprising a step of emitting a microwave electromagnetic radiation towards at least one zone, termed the radar monitoring zone, of the stretch of carriageway and a step of acquiring and processing the microwave electromagnetic radiation reflected, and comprising at least one step of processing the results of the optical and/or sound and/or radar detections so as to deliver an item of information regarding the presence or absence of at least one vehicle.

Abstract: This method of detecting the presence of a disruptive object on a stretch of road comprises: a step (66) of enumerating the vehicles simultaneously present on the stretch of road on the basis of data gleaned by a first and a second vehicle detector placed respectively at an entrance and at an exit of this stretch, and a step (74) of instructing the activation of an image processing step, triggered automatically as a function of the enumeration.