Method for positioning a surface in relation to a light source using sensors

METHOD FOR POSITIONING A SURFACE IN RELATION TO A LIGHT SOURCE USING SENSORS, which allows the positioning of a reflective surface (2) in relation to the light source (1) so that the reflected light (7) by the reflective surface (2) falls on an objective point (8) of known position, by action of an electromechanical device (3) with two axes of rotation in azimuth and elevation;

• it is characterized in that comprises:
• making that the reflected light (7) by the reflective surface (2) falls on the objective point (8);
• measuring by a first sensor (4) located in a fixed position, a first azimuth angle (αp) and a first elevation angle (αa) forming the beam of light incident on the first sensor (4) with respect to a reference direction (9), and determining a second azimuth angle (γp) and a second elevation angle (γa), both invariable and known, forming the reflected beam (7) on the reflective surface (2) and falling on the objective point (8), in relation to the reference direction (9);
• geometry calculation of a third azimuth angle (δp) from the first azimuth angle (αp) and the second azimuth angle (γp) and geometry calculation of a third elevation angle (γa) from the first elevation angle (αa) and second elevation angle (γa), corresponding the third azimuth (δp) and elevation (δa) angles to the angles which form the incident beam (6) in relation to the axis perpendicular to a second sensor (5) solidly connected to the reflective surface (2), in azimuth and elevation respectively;
• at any position of the reflective surface (2), measuring by the second sensor (5), a fourth azimuth angle (δpe) and a fourth elevation angle (δae) which forms the reflected beam (7) with the axis perpendicular to the second sensor;
• comparing the third azimuth angle (δp) with the fourth azimuth angle so that in the case in which there is coincidence between the third azimuth angle (δp) and the fourth azimuth angle (δpe), maintaining the position in azimuth of the reflective surface (2), and otherwise varying the position of the reflective surface (2) to make coincide the third azimuth angle (δp) and the fourth azimuth angle (δpe);
• and comparing the third elevation angle (δa) with the fourth elevation angle (δae) so that, in the case in which there is coincidence between the third elevation angle (δa) and the fourth elevation angle (δae), maintaining the position in elevation of the reflective surface (2), and otherwise varying the position of the reflective surface (2) to make coincide the third elevation angle (δa) and the fourth elevation angle (δae).