Nice Ltd

Alberto Codognotto

Oscar Marchetto

A control method is described, said method being used within an operating system () for roller blinds () or the like having an output shaft (SH) of a motor (M) which transfers rotational movement to a drum () onto which the roller blind is wound, said method comprising the following steps: &#x2014;(i) detecting directly or indirectly the force acting on the drum, or on a member connected thereto, and/or the relative position of the drum, or of a member connected thereto, with respect to a part which is fixed and/or integral with the operating system; &#x2014;(ii) obtaining from the detection operation performed in step (i) a zero value (RZ) representing a stable rest condition of the roller blind; &#x2014;(iii) starting an automatic closing movement of the roller blind should said force and/or said relative position (RR) vary, with respect to the value (RZ) obtained during step (ii), beyond a predefined threshold (T). The method simplifies the constructional design and installation of the operating system, while providing it with protection against wind and impacts.

Operating system for roller blinds with protection against excessive wind

Motor-driven actuating system for roller shutters or sliding barriers or the like, provided with an obstacle-sensing safety device for acquiring samples (&#x3b6;(&#x3c6;n)) of at least one main physical parameter (&#x3b6;) relating to operation of the actuating system, preferably the torque supplied by the motor, sampled in a set of positions (&#x3c6;n) of the roller shutter along its travel path; for generating from the samples the points of a memorized reference profile (M; W); processor able to calculate the deviation between the profile (M; W) and values subsequently acquired in real time (&#x3b6;(&#x3c6;k)) for the same main parameter (&#x3b6;) and able to modify the movement of the roller shutter depending on the deviation, wherein the device is designed to analyze and/or process the result of one or more arithmetic logic operations which have as the operand at least the value (&#x3a8;(&#x3c6;k)) of a variable (&#x3a8;) acquired in real time, and, depending on the result, modify the points of the profile (M; W) with operations based on previously memorized values.

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Cessalto, Italy

Alberto Codognotto