8results about How to "Improve light gathering efficiency" patented technology

The utility model discloses an LED (light-emitting diode) light-transmitting mirror with high light-condensing efficiency, which comprises a lens body and a light-condensing column connected to the rear end of the lens body, the front end surface of the lens body is a light-emitting surface, and the rear end surface of the light-condensing column is a light-entering surface. The front end of the condensation column is composed of an upper boss, an extension column, a lower inclined plane and a lower boss which are sequentially connected from top to bottom, the rear end of the condensation column is a cylindrical body with the cross section gradually reduced from front to back, and the front end of the cylindrical body is connected with the tail end of the extension column. According to the utility model, the problem that the brightness cannot meet the requirement when the SMD-LED is used for the traffic display screen is effectively solved.

The present invention discloses an experimental test device and a test method for the influence of wind and sand activities on the focusing of heliostats, and belongs to the field of wind tunnel experiment technology. The experimental test device for the influence of wind and sand activities on the focusing of heliostats includes a test room and a heliostat test model, a sand leakage trough, a Lambertian target, a laser transmitter and a CCD camera arranged in the test room. The test room has a relatively arranged air inlet and an air outlet. The heliostat test model is arranged downstream, the sand leakage trough is arranged at the upstream top of the heliostat test model, and a plurality of sand leakage holes that can be opened and closed are evenly arranged at the bottom of the sand leakage trough. The Lambertian target is arranged upstream of the heliostat test model, and the CCD camera is used to continuously shoot the number of light spots on the Lambertian target. The experimental test device and the test method for the influence of wind and sand activities on the focusing of heliostats of the present invention can accurately predict the influence of wind and sand activities on the focusing efficiency of the heliostat field, and provide an accurate theoretical basis for the mirror field design.

This invention relates to the field of solar power generation technology, and particularly to a control method for a dish concentrator based on an I3-RPS tracking mechanism. The control method includes: establishing a solar direction vector calculation model; establishing a multi-coordinate system to describe the motion of the dish concentrator, and deriving the homogeneous transformation matrix between the coordinate systems; obtaining the pose of the moving platform based on the solar direction vector, and establishing a mapping relationship between the length, velocity, and acceleration of the telescopic rod and the pose of the moving platform through inverse kinematics; establishing an inverse dynamics model based on the principle of virtual work; designing a hierarchical composite control strategy; at the top level, using a parallel synchronous architecture to coordinate the motion of the I3-RPS tracking mechanism; at the bottom level, designing an RBF-FSMC controller for the I3-RPS tracking mechanism, replacing the switching function with a saturation function, dynamically adjusting the saturation function gain and boundary layer thickness through fuzzy rules, and introducing a radial basis function neural network to approximate system modeling errors and external disturbances online. This control method exhibits high tracking accuracy and strong anti-interference capability.

The invention provides an overall light path adjusting device used in laser correlation, and belongs to the technical field of decorations, the forward and reverse rotation integrated water fetching device comprises a transmitting mechanism and a receiving mechanism, laser transmitted by the transmitting mechanism is received by the receiving mechanism, the transmitting mechanism comprises a transmitting end shell and a transmitting end mounting base, and the transmitting end shell is connected with the transmitting end mounting base. Laser holes are formed in the transmitting end shell at equal intervals, protective covers are installed on the laser holes, the movable plate is connected with a fixed plate through an adjusting mechanism, the adjusting mechanism comprises an adjusting bolt and an adjusting spring, a through hole is formed in the movable plate, the adjusting bolt is screwed into the through hole in a threaded mode, and a threaded hole is formed in the position, corresponding to the through hole, of the fixed plate. After the adjusting bolt penetrates through the threaded hole, the adjusting bolt is sleeved with the adjusting spring, so that the tail end of the adjusting bolt is in threaded connection with the through hole, and by means of the device, the base plate is rotated through a beam of visible laser to adjust all other lasers to the corresponding positions instantly.

The embodiment of the invention discloses an optical communication device for a deep sea environment. According to one specific embodiment, the optical communication device for the deep sea environment comprises a conical lens, a main reflector, a second reflector, a detector target surface, a lens mounting support and a connecting support, and the lens mounting support comprises a first lens mounting groove, a second lens mounting groove and at least one connecting column. At least one connecting column is connected between the first lens mounting groove and the second lens mounting groove; the main reflecting mirror is fixed in the first lens mounting groove, the conical lens is fixed in the second lens mounting groove, and the central points of the main reflecting mirror and the conical lens are on the central axis of the lens mounting bracket; the second reflecting mirror is fixed on at least one connecting column through a connecting bracket; and the detector target surface is fixed on one of the at least one connecting column. According to the embodiment, not only can the daylighting rate be ensured, but also the pressure-resistant requirement is reduced, the size and the weight of equipment are effectively reduced, and the manufacturing cost is reduced.

A circuit board is installed on a heat dissipation base, LED lamp beads are installed on the circuit board, a high-condensation-rate spotlight lens is installed above the LED lamp beads, a lamp cover is installed on the high-condensation-rate spotlight lens, and the outer surface of the high-condensation-rate spotlight lens is a full reflective mirror face. And titanium dioxide coatings are coated on the outer surfaces of the radiating seat, the lamp cover and the full-reflective mirror surface. Heat generated by the LED lamp is utilized to activate the titanium dioxide coating to decompose indoor acetaldehyde and formaldehyde, and indoor air pollutants are converted into harmless compounds.

The application belongs to the technical field of heliostat target point adjustment method, and particularly relates to a heliostat target point genetic optimization method suitable for a tower type light concentration and heat collection system. The method comprises the following steps: S1. Calculating heat absorber energy flow: dividing the surface of the heat absorber into a target point matrix, calculating the light spot distribution of each heliostat at a given target point on the heat absorber, and calculating the energy flow density distribution formed by the superposition of the light spots of the m heliostats in the mirror field on the heat absorber; S2. Target point genetic optimization: randomly generating S target point strategies as the initial population, generating a group of individuals with higher fitness of the target point strategy through random selection, crossover and mutation, evolving the group, and obtaining the optimized target point aiming strategy, so that the mirror field incident energy flow is uniformly distributed on the surface of the heat absorber. The method provided by the application adopts a target point genetic optimization algorithm to optimize the aiming strategy of the tower type light concentration and heat collection system, so that the mirror field incident energy flow is uniformly distributed on the surface of the heat absorber.

This invention discloses a method for calculating cosine effect loss and optimizing output thermal power in solar energy conversion. First, geographical and temporal parameters are obtained to establish a geometric model of the heliostat field. Based on the solar altitude angle, a cosine loss algorithm model is constructed, deriving a formula for calculating cosine efficiency with local latitude, solar declination angle, and solar hour angle as variables, thus achieving dynamic and accurate calculation of cosine loss. On this basis, an objective function is established to maximize the annual average output thermal power per unit mirror area. Considering constraints such as the heliostat's operating status, absorber tower location, installation height and dimensions, center distance, annular radius, and staggered layout, the optimal mirror field layout parameters and operating strategy are solved through year-round time-domain simulation. This invention accurately quantifies cosine loss through analytical algorithms and combines multi-constraint optimization to improve the annual output thermal power of the heliostat field, reduce shading and cosine loss, and provide support for the efficient operation of tower-type solar thermal power generation systems.