33results about How to "Low tracking accuracy requirements" patented technology

A method includes receiving first tracking data and a first confidence value at a tracker selection system from a first tracking system. The method includes receiving second tracking data and a second confidence value at the tracker selection system from a second tracking system. The tracking systems may be configured to track an object in a sequence of images, and the first and second tracking data may indicate locations of regions where the corresponding tracking system has tracked the object in an image of the sequence of images. The confidence values may indicate likelihoods that a corresponding tracking system is tracking the object. The method further includes providing output data to the first tracking system and to the second tracking system. The output data may include data selected from the first tracking data and the second tracking data based on a result of a comparison of the confidence values.

The invention discloses a tower type solar thermal power generation system for a heat absorber of vacuum heat absorption pipes, which is characterized in that water / steam is taken a heat transfer fluid, and fusion salt is taken as a heat storage medium. The tower type solar thermal power generation system comprises a heliostat (1), a support tower (2), a heat absorber (3), a steam turbine (4), a generator (5), a deaerator (6), a condenser (7), a water feed pump (8), a high-temperature fusion salt storage tank (9), a low-temperature fusion salt storage tank (10), a water / steam-fusion salt heat exchanger (11), a fusion salt steam generator (12) and a control valve (13). The heat absorber (3) is formed by connecting the vacuum heat absorption pipes (18) in series and in parallel. According to the invention, the heliostat is arranged in a fan-shaped manner, a rectangular manner or a circumferential manner, the high-temperature and high-pressure overheating steam is obtained, and the solar thermal power generation system is suitable for a large installed capacity tower type solar thermal power generation station.

The invention provides a secondary reflection light gathering and heat collecting device with a compound curved surface, which relates to a solar slot type light gathering and heat collecting device and comprises a heat collecting tube (1), a plane primary reflector (2), a refracting plane secondary reflector (3), a compound circular arc primary reflector (4), a compound paraboloid secondary reflector (5) and a supporting frame (6), wherein the heat collecting tube (1) comprises two parallel heat collecting tubes and is positioned in the compound paraboloid secondary reflector (5), and the supporting frame (6) is positioned below the compound circular arc primary reflector (4) and used for fixing the compound circular arc primary reflector (4). By adopting the design of combination of onesupporting frame and two heat collecting tubes, the cost and the height of the heat collecting device can be remarkably reduced; by adopting the compound paraboloid secondary reflector, the requirement on the tracking accuracy is reduced; by adopting the compound circular arc primary reflector, the degree of freedom of the design is increased; and by adopting the design of combination of the planereflector and the refracting plane, the utilization ratio of the light energy is improved.

A planar concentrator solar power module has a planar base, an aligned array of linear photovoltaic cell circuits on the base and an array of linear Fresnel lenses or linear mirrors for directing focused solar radiation on the aligned array of linear photovoltaic cell circuits. The cell circuits are mounted on a metal back plate. The cell circuit area is less than a total area of the module. Each linear lens or linear mirror has a length greater than a length of the adjacent cell circuit. The cell circuit may have cells mounted in shingle fashion to form a shingled-cell circuit. In an alternative module, linear extrusions on the circuit element have faces for mounting the linear mirrors for deflecting sun rays impinging on each mirror onto the shingled-cells. The linear extrusions are side-wall and inner extrusions with triangular cross-sections. The circuit backplate is encapsulated by lamination for weather protection. The planar module is generally rectangular with alternating rows of linear cell circuits and linear lenses or linear mirrors.

The invention discloses a composite device of light funnel light concentrating photovoltaic power generation and wind power generation, belonging to the technical field of solar energy and wind energy complementary power generation. The device consists of main parts such as a light funnel light concentrator, a photovoltaic battery board, a wind power generator, etc. After entering into the light funnel light concentrator, the sunlight is concentrated to the photovoltaic battery board though the reflection at the inner surface of the light funnel light concentrator, and the solar energy is converted into electrical energy by the battery board. The light funnel light concentrating photovoltaic power generation device improves light concentrating times, so as to improve the efficiency of the photovoltaic battery board and have low requirement to track precision. Furthermore, the wind power generator is installed at the rear part of the light funnel light concentrator and can be driven to normally generate power only with at least one level wind. The device mainly uses the light funnel light concentrating photovoltaic power generation and accessorially uses the wind power generation in the daytime and uses the wind power generation in the night, to realize continues power generation in the daytime and the night, and finally offer the converted electricity power generated by the wind and the light to a storage battery to be intelligently stored.

The invention belongs to the technical field of solar concentration and heat utilization, and particularly relates to a composite multi-curved trough-type solar concentrating collector. According to the composite multi-curved trough-type solar concentrating collector with the automatic defrosting function, when a solar altitude is low, sunlight through a glass light inlet is reflected to a black light absorbing panel with a light trap by a half-paraboloid and a vertical reflection surface to heat air in an air heating cavity; one part of heated hot air is used for heating a glass cover plate and the other part of light enters the inner surface of a linear Fresnel condenser to ascend to the inner surface of the glass cover plate, thereby achieving the defrosting function. When the solar altitude is high, the sunlight through the glass cover plate enters the half-paraboloid and a parabolic reflector, and is converged to a fin in a glass vacuum tube receiver after being reflected to be absorbed by a heat exchange medium in a liquid channel, the sunlight through the linear Fresnel condenser is directly converged on a receiving body and two parts of converged sunlight provide the heat exchange medium with heat energy.

The invention provides a two-level focus sunlight converging device which mainly comprises a first level light converging unit, a second level light converging unit, a support and optical fibers. The first level light converging unit and the second level light converging unit are fixed on the support and are coupled on a sunlight incident light path, wherein the first level light converging unit is used for primarily converging sunlight, and the second level light converging unit is used for converging the sunlight which is converged by the first light converging unit again. The two-level focus sunlight converging device has the advantages that the size of sunlight focus light spots is effectively decreased. Meanwhile, the positions of the silica optical fibers can be adjusted through screws in an optical fiber collimator. Therefore, sunlight with different spectrums can be adjusted to enter the optical fibers, and the purpose of selectively transmitting sunlight spectrums is achieved. The silica optical fibers with small diameters can be used for transmitting, and cost is lowered. Meanwhile, large diameter diaphragms of the optical fiber collimator can effectively lower the requirement for following precision, and the positions of the optical fibers in the optical fiber collimator can be adjusted to selectively transmit the light spectrums of the sunlight.

The invention belongs to the technical field of photoelectricity and relates to an earth axis type solar concentrating photovoltaic generating device. The device consists of a series of solar concentrating photovoltaic generating units with the same structure; and each unit is arranged on a bracket. The solar concentrating photovoltaic generating unit consists of a reflecting optical collector, a single-axis tracking device, a non-imaging optical collector and an optical collecting solar cell which are connected into a whole through a single axis. The optical collecting system of the solar concentrating photovoltaic generating unit is a fixed focus-type point focusing system and has high light collecting ratio. The surface shape of the reflecting optical collector adopts a curved surface of a tire, can correct astigmatism and improve light collecting performance. In a single-axis tracking mode, a rotating axis of is parallel to the earth axis; and a mechanical structure of the tracking device and a control system are simple. The solar concentrating photovoltaic generating unit can realize batch production and effectively reduce cost for solar power generation.

An extremely low-cost solar concentrator is formed by inflating an elastic film. The solar concentrator is characterized in that an enclosed airbag is formed by a transparent film and a reflective film and then is inflated into a compound parabolic concentrator (CPC) non-imaging concentrator. The concentrator portion of the inflatable CPC is formed with the reflective film, and the portions on thetop of CPC and on the bottom of the concentrator are made of the transparent film. The incident light including parallel rays of light and diffuse light, as long as falling into the half acceptance angle of the CPC, will be concentrated to the exit aperture of the CPC. Therefore, this type concentrator reduces the requirement to the accuracy of tracking for concentration. In addition, this type of concentrator demonstrates more tolerance to shape distortion.

The invention discloses a low-concentration photovoltaic component. The photovoltaic component comprises a back panel, a light receiver and a concentrating system, wherein the back panel comprises a substrate and a metal foil; the surface of the metal foil is cut into a plurality of insulated periodic units; the substrate and the metal foil are adhered together through an insulating heat-conducting adhesive; the light receiver consists of serial solar cell chips of a plurality of linearly arranged glass substrates and is adhered in the periodic unit on the metal foil through the insulating heat-conducting adhesive; the adjacent solar cell chips are connected through the metal foil; and the concentrating light comprises a light focusing strip-shaped lens, a parabolic trough, a combined parabolic surface and an auxiliary element. By using the photovoltaic component, the sunshine can be focused on the light receiver with low cost and high efficiency under the optimal focusing condition so as to obtain the maximum photovoltaic conversion efficiency. The low-concentration photovoltaic component reduces the difficulty and the cost for heat dissipation and sun tracking while reducing the series resistance, the machining method for the component is simple and reliable, and the manufactured component has stable performance.

The invention discloses a reflection focusing solar energy photovoltaic power generation device. The device is mainly characterized in that a reflection condenser of the device is formed by a group of flat mirrors which are mounted together, in which one part of the flat mirrors are fixed flat mirrors, and the other part of the flat mirrors are rotating flat mirrors which can change angle; each rotating flat mirror is fixedly connected into a rectangular picture frame through a rotating shaft; the photovoltaic cell is fixed by a supporting rod on the opposite of the reflection condenser; and a supporting frame is fixed under the reflection condenser. According to the reflection focusing solar energy photovoltaic power generation device, the flat mirrors with low cost are used for converging solar light, according to the intensity and environment temperature of solar light, the concentration ratio of the reflection condenser is adjusted by dismounting or adjusting the reflection angles of a part of flat mirrors, and the total quantity of solar light reflected onto the photovoltaic cell is controlled, so that illumination on the photovoltaic cell remains optimal.

The invention discloses an efficient integrated system utilizing solar radiation medium-temperature heating and sky radiation refrigeration. The efficient integrated system comprises fixed reflector heat collection / refrigeration double-effect arrays, a heat storage tank, a cold storage tank, a double-effect absorption type refrigeration unit and a cooling device; each fixed reflector heat collection / refrigeration double-effect unit comprises a radiation cooling reflector, a rotating module and a receiver module; the radiation cooling reflectors are horizontally placed on the ground, and the receiver modules are located above the radiation cooling reflectors and are controlled by the rotating modules to move in an arc shape. The system can provide a medium-temperature heat source and a conventional cold source at the same time, can achieve all-weather refrigeration, is large in comprehensive energy supply per unit occupied area, is high in solar energy utilization rate and refrigeration efficiency, is provided with fixed collecting lenses, and is low in cost.

The invention discloses an octahedral low-concentration photovoltaic unit body. The octahedral low-concentration photovoltaic unit body comprises a photovoltaic battery which is square or similar to a square, as well as four front side surface light reflecting plates and four inclined side surface light reflecting plates, which are arranged around the photovoltaic battery; each front side surface light reflecting plate contains a rectangular effective light reflecting surface; each inclined side surface light reflecting plate contains a rhombic effective light reflecting surface; each rectangular effective light reflecting surface and each rhombic effective light reflecting surface reflect the incident light which is perpendicular to a plane in which the photovoltaic battery is positioned, and the surface of the photovoltaic battery is just full of the generated reflected light uniformly. The invention further discloses a concentrating photovoltaic assembly and a concentrating photovoltaic power generating device which consist of the octahedral low-concentration photovoltaic unit body. The limit concentration ratio of the octahedral low-concentration photovoltaic unit body disclosed by the invention can reach 9; the radiation received by the photovoltaic battery is uniform; compared with the conventional reflecting type low-concentration technical scheme, the radiation quantity and the electricity generating capacity of the photovoltaic battery in a unit area are greatly improved.

The invention discloses a composite device of light funnel light concentrating photovoltaic power generation and wind power generation, belonging to the technical field of solar energy and wind energy complementary power generation. The device consists of main parts such as a light funnel light concentrator, a photovoltaic battery board, a wind power generator, etc. After entering into the light funnel light concentrator, the sunlight is concentrated to the photovoltaic battery board though the reflection at the inner surface of the light funnel light concentrator, and the solar energy is converted into electrical energy by the battery board. The light funnel light concentrating photovoltaic power generation device improves light concentrating times, so as to improve the efficiency of thephotovoltaic battery board and have low requirement to track precision. Furthermore, the wind power generator is installed at the rear part of the light funnel light concentrator and can be driven tonormally generate power only with at least one level wind. The device mainly uses the light funnel light concentrating photovoltaic power generation and accessorially uses the wind power generation in the daytime and uses the wind power generation in the night, to realize continues power generation in the daytime and the night, and finally offer the converted electricity power generated by the wind and the light to a storage battery to be intelligently stored.

The invention discloses a low-altitude denial system and method for precise strike. The system comprises a command and control subsystem, a frequency spectrum detection subsystem, a radar subsystem, a light beam control and tracking subsystem, a microwave suppression interference subsystem, a navigation decoy interference subsystem and a laser source subsystem, wherein the command and control subsystem is used for realizing target search, interference and decision control; the frequency spectrum detection subsystem is used for realizing target early warning; the radar subsystem is used for realizing detection positioning and tracking and outputting coordinate information; the light beam control and tracking subsystem is used for realizing directional emission of high-energy laser beams; the microwave suppression interference subsystem is used for blocking uplink, downlink and navigation links of an unmanned aerial vehicle; the navigation decoy interference subsystem is used for realizing navigation decoy of a target by generating navigation decoy information of a strong signal; and the laser source subsystem is used for generating high-energy laser. According to the low-altitude denial system and method, the accuracy and success rate of target striking can be improved, and the method has very high engineering application value and the like.

The invention discloses a direct heat absorption type energy storage power generation system based on vacuum heat absorbing tubes. T the direct heat absorption type energy storage power generation system comprises a heat collection system, a heat storage system and a power generation system. The heat collection system comprises heliostats and a vertical heat absorption tube array. The heat storagesystem comprises a heat storage tank. The power generation system comprises a heat output conductor, a heat switch, a steam turbine and a power generator. The lower portion of the vertical heat absorption tube array extends into a heat storage medium. The other end of the heat output conductor makes contact with a steam generator heat exchange pipeline of the steam turbine through the heat switch. The output end of the steam turbine is connected with the power generator. The direct heat absorption type energy storage power generation system adopts a photo-thermal power station heat absorptionand heat conduction mode, directly absorbs sunlight through the heat absorption tubes, transmits heat to the heat storage medium in the heat storage tank on the ground without delivering the heat storage medium to a tower top. Application of an existing molten salt pump and flowing of the heat storage medium are avoided. The cost is substantially reduced. The safe reliability of the system is improved.

The invention provides a secondary reflection light gathering and heat collecting device with a compound curved surface, which relates to a solar slot type light gathering and heat collecting device and comprises a heat collecting tube (1), a plane primary reflector (2), a refracting plane secondary reflector (3), a compound circular arc primary reflector (4), a compound paraboloid secondary reflector (5) and a supporting frame (6), wherein the heat collecting tube (1) comprises two parallel heat collecting tubes and is positioned in the compound paraboloid secondary reflector (5), and the supporting frame (6) is positioned below the compound circular arc primary reflector (4) and used for fixing the compound circular arc primary reflector (4). By adopting the design of combination of onesupporting frame and two heat collecting tubes, the cost and the height of the heat collecting device can be remarkably reduced; by adopting the compound paraboloid secondary reflector, the requirement on the tracking accuracy is reduced; by adopting the compound circular arc primary reflector, the degree of freedom of the design is increased; and by adopting the design of combination of the planereflector and the refracting plane, the utilization ratio of the light energy is improved.

The invention discloses a low-concentration photovoltaic component. The photovoltaic component comprises a back panel, a light receiver and a concentrating system, wherein the back panel comprises a substrate and a metal foil; the surface of the metal foil is cut into a plurality of insulated periodic units; the substrate and the metal foil are adhered together through an insulating heat-conducting adhesive; the light receiver consists of serial solar cell chips of a plurality of linearly arranged glass substrates and is adhered in the periodic unit on the metal foil through the insulating heat-conducting adhesive; the adjacent solar cell chips are connected through the metal foil; and the concentrating light comprises a light focusing strip-shaped lens, a parabolic trough, a combined parabolic surface and an auxiliary element. By using the photovoltaic component, the sunshine can be focused on the light receiver with low cost and high efficiency under the optimal focusing condition so as to obtain the maximum photovoltaic conversion efficiency. The low-concentration photovoltaic component reduces the difficulty and the cost for heat dissipation and sun tracking while reducing theseries resistance, the machining method for the component is simple and reliable, and the manufactured component has stable performance.

The invention discloses an acquisition system and method for high data rate direct sequence spread spectrum signals under a large Doppler dynamic condition. A coarse acquisition based on symbol jump edge detection, and a precision controllable Doppler spectrum analysis are employed in the method. The coarse acquisition based on symbol jump edge detection can acquire data symbol jump edge positions, pseudo code phases and primary Doppler frequency offset estimates of the direct sequence spread spectrum signals. Coarse acquisition results are verified through the spectrum analysis, and a final Doppler frequency offset estimation whose accuracy is lower than dozens of Hertz is obtained, so that requirements on tracking loops are significantly reduced. By employing the method, the high data rate direct sequence spread spectrum signals with low signal-to-noise ratios under the large Doppler dynamic condition can be rapidly acquired.

The invention discloses an octahedral low-concentration photovoltaic unit body. The octahedral low-concentration photovoltaic unit body comprises a photovoltaic battery which is square or similar to a square, as well as four front side surface light reflecting plates and four inclined side surface light reflecting plates, which are arranged around the photovoltaic battery; each front side surface light reflecting plate contains a rectangular effective light reflecting surface; each inclined side surface light reflecting plate contains a rhombic effective light reflecting surface; each rectangular effective light reflecting surface and each rhombic effective light reflecting surface reflect the incident light which is perpendicular to a plane in which the photovoltaic battery is positioned, and the surface of the photovoltaic battery is just full of the generated reflected light uniformly. The invention further discloses a concentrating photovoltaic assembly and a concentrating photovoltaic power generating device which consist of the octahedral low-concentration photovoltaic unit body. The limit concentration ratio of the octahedral low-concentration photovoltaic unit body disclosed by the invention can reach 9; the radiation received by the photovoltaic battery is uniform; compared with the conventional reflecting type low-concentration technical scheme, the radiation quantity and the electricity generating capacity of the photovoltaic battery in a unit area are greatly improved.

The invention belongs to the technical field of solar condensation and heat utilization, and particularly relates to a photo-thermal photovoltaic coupling energy-supply free-tracking solar condenser. The condenser comprises a groove-type composite multi-curved-surface solar condenser, solar cell modules, a glass cover plate, a glass vacuum tube and a straight-through tube, wherein the straight-through tube is arranged in the glass vacuum tube as a receiving body. The groove-type composite multi-curved-surface solar condenser focuses sunlight incident into the condenser into the glass vacuum tube positioned in the focal spot position inside the condenser, so that spot light heat emission is realized; the sunlight not received by the glass vacuum tube is reflected to the solar cell modules positioned on the inner side of the glass cover plate, so that spot light electricity generation is realized; and meanwhile, two solar cell modules are arranged back-to-back in an up-and-down staggered mode to form a hot air channel, a micro heat exchange channel is formed between two plate backs, so that heat generated when the solar cell modules work is conveniently taken away by air in the micro heat exchange channel, and frost on the surface of the glass cover plate is melted, so that the effect of defrosting is achieved.

The invention provides a fixed solar energy, radio and radio frequency convergence system, relates to the technical field of convergence systems, and solves the technical problems of high cost, complicated maintenance and the like of a convergence system in the prior art. The fixed solar energy, radio and radio frequency convergence system comprises a receiving area, a first convergence mirror anda second convergence mirror, the receiving area is inclined relative to the ground, and the lower edge of the first convergence mirror and the lower edge of the second convergence mirror are alignedwith the lower edge and the upper edge of the receiving area respectively. The axes of the first converging lens and the second converging lens in the horizontal direction are parallel to the receiving area; and solar energy, radio energy or radio frequency energy directly irradiates or is transmitted to the receiving area, or irradiates or is transmitted to the first converging mirror and is reflected to the receiving area, or irradiates or is transmitted to the first converging mirror, is reflected to the second converging mirror, is reflected to the receiving area, and is converted into energy or electric signals in other forms. The invention is used for improving the convergence ratio and reducing the installation cost of related equipment.

The invention discloses a high efficiency and energy-saving dual-axis groove type photovoltaic automatic tracking system. The system comprises a groove type condensation component and a dual-axis tracking device. The groove type condensation component comprises a groove type condensation plate and a groove type condensation battery. The groove type condensation plate is provided with a condensation groove. The groove type condensation battery is a bar-shaped battery with a length direction. The groove type condensation battery is located above the condensation groove and is fixed. The length direction of the groove type condensation battery is consistent with the extending direction of the condensation groove. The groove type condensation component is arranged on the dual-axis tracking device, and the length direction of the groove type condensation battery is arranged in the east-west direction. The dual-axis tracking device is used to track the change of the azimuth and the height angle of the sun and control the orientation change of the groove type condensation component according to the change of the azimuth and the height angle of the sun. According to the invention, the number of times of solar tracking is effectively reduced; the frequency of start and stop of a motor is reduced; and the requirement for tracking accuracy is reduced.

The two-stage concentrating sunlight concentrating device of the present invention mainly includes a first-stage concentrating unit, a second-stage concentrating unit, a bracket and an optical fiber; wherein the first-stage concentrating unit and the second-stage concentrating unit are fixed on the bracket , and coupled on the incident light path of the sun, wherein the first-level concentrating unit is used to initially condense sunlight; the second-level concentrating unit is used to re-condense the sunlight collected by the first-level concentrating unit. The beneficial effect lies in that the size of the focused spot of sunlight is reduced. At the same time, the position of the silica fiber can be adjusted through the screw on the fiber collimator, so that sunlight of different spectra can be adjusted to enter the fiber, and the purpose of selectively transmitting the solar spectrum can be achieved. Transmission can be carried out through small-diameter silica optical fibers, reducing costs. At the same time, the larger aperture stop of the fiber collimator can effectively reduce the requirements for tracking accuracy. The spectrum of sunlight can be selectively transmitted by adjusting the position of the fiber in the fiber collimator.

The invention discloses a maintenance-free dry-running slewing bearing structure for sun tracking, which comprises a housing, a drive motor, and a worm and a turbine arranged in the housing and meshing with each other. The housings corresponding to the two ends of the worm are provided with The left and right glands are respectively provided with left and right stepped sliding sleeves made of engineering plastics between the left and right glands and the worm, and the left and right stepped sliding sleeves are respectively connected to the corresponding left and right The right gland is tightly fitted to form an integral structure. The inner walls of the left and right stepped sliding bushings are attached to the worm, and the worm can rotate relative to the left and right stepped sliding bushings. The threaded surface is injection-molded with engineering plastics and has a compound layer. By analyzing the operation mode of the sun tracker and combining the characteristics of modern engineering plastics and composite technology, the present invention makes a maintenance-free dry running design for the slewing bearing used for sun tracking, so that it can completely get rid of the trouble of lubrication failure and ensure Its long-term reliable operation.

A method includes receiving first tracking data and a first confidence value at a tracker selection system from a first tracking system. The method includes receiving second tracking data and a second confidence value at the tracker selection system from a second tracking system. The tracking systems may be configured to track an object in a sequence of images, and the first and second tracking data may indicate locations of regions where the corresponding tracking system has tracked the object in an image of the sequence of images. The confidence values may indicate likelihoods that a corresponding tracking system is tracking the object. The method further includes providing output data to the first tracking system and to the second tracking system. The output data may include data selected from the first tracking data and the second tracking data based on a result of a comparison of the confidence values.