Fortuna, Jevgenijs

A fish feeder (1) and fish feeding system are disclosed, providing precise and controlled feed dispensing while minimizing clogging and feed accumulation. The feeder housing (2) forms the feed container (4) and the feed channel (8) as internally separated sections, with the feed channel extending below the feed container and accommodating a feeding screw (9). A feed container outlet (5) is positioned at the interface between the feed container and the feed channel, allowing controlled feed transfer into the feed channel, with feed flow being regulated by a feed flow control gate (6). The feeding screw includes blades (92) with specially profiled upper portions and an inclined base surface, which collectively ensure continuous downward and outward radial movement of feed granules, preventing feed accumulation and ensuring uniform distribution. The system includes a controller (30) operatively connected to a set of sensors, (20) the feed flow control gate actuation mechanism, and the feeding screw actuation mechanism. The controller processes sensor data, calculates feeding parameters, and generates control signals to adjust the feed flow control gate and feeding screw operation, optimizing feed distribution, reducing waste, and ensuring reliable and adaptive feeding control in aquaculture applications.

The present invention relates to optical imaging systems, specifically fluorescence imaging systems. An optical system for a fluorescence imager is disclosed, comprising a laser source (1) configured to generate a collimated excitation laser beam, a beam splitter (2) configured to receive the excitation laser beam and divide it into two substantially equal beams, and a receiving structure (3'') configured to accommodate a target vessel (3) configured to hold a target containing fluorophores. The system includes two substantially identical excitation systems (4', 4'') positioned symmetrically around the target vessel (3) on opposite lateral sides, ensuring uniform beam energy distribution across the target. Each excitation system (4', 4'') comprises a fiber optic cable (41) configured to transmit a focused beam, a first half-ball lens (42) configured to focus the beam into the fiber optic cable (41), a second half-ball lens (43) configured to recollimate the beam upon exiting the fiber optic cable (41), and a mirror (45) positioned at an angle (X) to direct the recollimated beam towards the target vessel (3), reflecting the beam at a total angle of approximately twice the mirror angle (2X). An imaging system (5) is configured to capture fluorescence emission from the target vessel (3) and includes an aperture (51), one or more optical filters (52', 52'') configured to attenuate excitation light, an imaging lens (53), and a photosensor (54) configured to capture fluorescence light emitted from the target. The optical filters (52', 52'') are positioned on opposite sides of the imaging lens (53), ensuring selective transmission of fluorescence emissions while blocking undesired excitation light. The system provides precise optical alignment, uniform energy distribution, and efficient fluorescence detection, enhancing imaging performance and signal clarity.

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The invention relates to vehicle-embedded wind turbine systems configured to harness and transform wind energy into electrical power. The integrated wind turbine energy harvesting system comprises a horizontally oriented, diffuser-augmented ducted vertical-axis wind turbine, a duct comprising an inlet and an outlet for air flow, an internal cavity designed to house a rotational axis with wind turbine blades; the system further comprises a controllable horizontal airflow guide vanes situated anterior to the inlet, designed for rotational adjustment around the vanes' horizontal axis; the rotational axis of the wind turbine extends horizontally and is coupled with electromagnetic alternators, one alternator on each side of the wind turbine axis; the wind turbine axis is supported by four bearings, with each alternator positioned between two bearings; the duct comprises two parts, an upper and a lower, split along a horizontal plane, wherein the upper part of the duct being shaped substantially as an open rectangular prism with an arch-shaped protrusion at its top; the arch-shaped protrusion configured to provide a clearance around the blade tips; and the lower part of the duct having semi-cylindrical shape, adapted to house the lower half of the wind turbine and support the wind turbine axis with the blades.