Abstract: The present invention is directed to a system for charging and discharging air under a controlled pressure. This is a mechanical and electronic connection system that produces an accumulation of energy in chambers of fluid devices, and the subsequent opening thereof to convey liquid samples. It belongs to the field of industrial engineering. The main uses of this invention are: manufacturing fluid devices for controlling samples in a reliable manner, making the devices easier to use since pressurisation and electrical connection are simultaneously obtained, in biological and chemical processes involving a controlled movement of samples and, more specifically, the inclusion thereof in lab-on-a-chip or ?TAS platforms, providing a quantum jump in the quality and versatility of automatic laboratory protocols in devices having approximately the size of a credit card.

Abstract: The present invention consists of a system for positioning a reflective surface in relation to the sun by means of a solar sensor in the reflected light, the object of which is for the reflected light to fall upon a target point, using a solar sensor and a dual-axis angular mechanism. The procedure allows a reflective surface (R) mounted on a mechanical system having two rotation axes to be positioned in relation to the sun (S): azimuth-elevation; using a solar sensor (1) disposed in front of the reflective surface, facing it, in a fixed orientation. The solar sensor measures the angles (2) formed by the projections of the vector of the incident light in relation to two orthogonal planes (4). The procedure is applied independently and simultaneously in both rotation axes, and allows calculation of the relative position of the reflected ray (3) on the reflective surface in relation to the orthogonal planes (4) of the solar sensor (1).

Abstract: The invention relates to a method for positioning a surface in relation to a light source using sensors. The method can be used to control the position of a reflective surface (2) such that the reflected light (7) originating from a light source (1) falls on an objective point (8), through the use of a first sensor (4) which determines the position of the light source (1) in relation to a reference direction (9) and a second sensor (4) which is solidly connected to the reflective surface (2) and which determines the relative position of the reflective surface (2) in relation to the light source (1). Having ascertained these positions and the relative position of the reflective surface (2) in relation to the objective point (8), the method is used to determine the necessary movement to be applied to the reflective surface (2) so that the reflected light (7) falls on the objective point (8).

Abstract: The invention relates to a method for positioning a surface in relation to a light source using sensors. The method can be used to control the position of a reflective surface (2) such that the reflected light (7) originating from a light source (1) falls on an objective point (8), through the use of a first sensor (4) which determines the position of the light source (1) in relation to a reference direction (9) and a second sensor (4) which is solidly connected to the reflective surface (2) and which determines the relative position of the reflective surface (2) in relation to the light source (1). Having ascertained these positions and the relative position of the reflective surface (2) in relation to the objective point (8), the method is used to determine the necessary movement to be applied to the reflective surface (2) so that the reflected light (7) falls on the objective point (8).