| 摘要 |
<p>A control method is described, said method being used within an operating system (10) for roller blinds (20) or the like having an output shaft (SH) of a motor (M) which transfers rotational movement to a drum (40) onto which the roller blind is wound, said method comprising the following steps: -(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; -(ii) obtaining from the detection operation performed in step (i) a zero value (RZ) representing a stable rest condition of the roller blind; -(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.</p> |
