259 results about "Solar azimuth angle" patented technology

A method for individualized control of means for closing off at least one window, by: determining coordinates of a dazzle cone associated with a window and with a dazzle-sensitive zone, the dazzle cone defined by a vertex positioned at the dazzle-sensitive zone and a directrix curve superimposed on the perimeter of the window; determining the orientation of direct rays of sunlight, and defined by a solar azimuth and a solar elevation; periodically checking whether the orientation falls within a predetermined dazzle cone; the directions of the rays of sunlight being parallel to one of the directions within the dazzle cone and passing through the vertex of the cone; and acting on closing-off means associated with the window for which orientation of rays of sunlight falls within a dazzle cone.

A system and method for identifying the solar potential of rooftops. In one embodiment, solar-potential criteria and three-dimensional spatial data and tabular data, for a selected area including parcels on which the rooftops are located, are entered into a geographic information system. Three-dimensional aerial data of the selected area, including the rooftops in the selected area, is collected. Solar azimuth and altitude angles are calculated for regular intervals to generate shadow simulation data representing shadows cast onto the rooftops by obstructions. The shadow simulation data is intersected with the XYZ coordinates of the rooftop shapes, as determined from the aerial data, to generate rooftop shade patterns for specific intervals over a specific period of time. The tabular data and the rooftop shade patterns are then used to determine addresses and per-parcel specifications of buildings having said rooftops meeting the solar-potential criteria.

The invention discloses a satellite posture all-round controlling method based on a magnetic moment device and a flywheel, relating to an all-round posture controlling method for completing a satellite orbit-injection phase by using the magnetic moment device and the flywheel. The invention solves the problems of low reliability and short service life of the traditional satellite posture all-round controlling technology. The satellite posture all-round controlling method comprises the following steps of: 1, setting controller parameters according to the requirement of a control system; 2, measuring a geomagnetic field intensity vector Bb, a satellite angular velocity vector Wb and a solar azimuth, and sending the measured data to a satellite controller; 3, calculating an expected control moment vector Tm and a control magnetic moment vector Mm, and sending the control magnetic moment vector Mm to the magnetic moment device; 4, acquiring an effective solar azimuth vector Alfa; 5, calculating a control input moment vector Tw and sending to the flywheel; and 6, jointly completing the satellite posture all-round control by the magnetic moment device according to the control magnetic moment vector Mm and the flywheel according to the control input moment vector Tw. The invention is suitable for the field of satellite posture control.

The invention relates to a method and a device for calculating the reflectivity of an earth surface, which are used for HJ-1A/B satellites. The method comprises the following steps of: 1) acquiring the optical thickness of atmospheric aerosol by using middle-infrared bands of an HJ-1B charge coupled device (CCD) and an infrared camera on the basis of a dark target method, and acquiring the optical thickness of the atmospheric aerosol by using an HJ-1A large-width quick revisit characteristic on the basis of an invariant target method; 2) calculating a solar zenith angle and a solar azimuth angle and observing the zenith angle and the azimuth angle on the basis of an HJ-1A/binary extensible markup language (BXML) file and image data; 3) simulating radiance Lm on a star through moderate resolution atmospheric transmission (MODTRAN) on the basis of parameters acquired in the steps 1) and 2); 4) establishing an earth surface reflectivity lookup table through the step 3); and 5) calibrating the atmosphere by using the lookup table according to an atmospheric parameter and an image to be calibrated. By the method and the device, the absorbing and scattering performance of the atmosphere on a remote sensing image can be effectively eliminated, the reflectivity of an earth surface target can be recovered, the bottleneck of industry application is eliminated, and the application range of environment disaster reduction moonlet data is further expanded.

A solar servo control tracking device is disclosed. The device includes: an integrated control device having a solar cell sensor unit detecting luminance at a solar azimuth, and an integrated control panel transmitting a control signal at a maximal solar azimuth, calculated by comparing a solar azimuth from the luminance at a solar azimuth; and solar tracking devices, respectively having a tracking device controller receiving the control signal via a wireless link, a high torque driving unit with an AC single phase inductor to generate driving torque by the control signal from the tracking device controller, solar module assemblies driven by the high torque driving unit to track the solar azimuth in accordance with the control signal, and an operating angle sensor unit installed to the high torque driving unit to detect operating angles of the solar module assemblies that track the sun by the control signal.

The invention provides a photovoltaic generator of plane network support two-dimension sun track, belonging to the technical field of solar-energy photovoltaic generation. The invention comprises a solar-energy photovoltaic generator and a sun tracker, wherein the sun tracker is a two-dimension track device, which comprises a horizontal rotary support, an inclined swing support, a vertical fixed shaft, a horizontal shaft, a sun direction track driver, and a sun altitude angle track driver. The solar-energy photovoltaic generator can be provided with a condenser and a self heat radiation in disc or groove shape while a plurality of photovoltaic generators are mounted on a plane network support of the inclined swing support. The horizontal rotary support rotates around the vertical fixed shaft. The inclined swing support rotates around the horizontal shaft. Therefore, the normal line of the photoelectric battery plate of the solar-energy photovoltaic generator is toward sun all the time. The invention has stable structure, small drive force, multiple load of elements, saved track cost, improved condense ratio caused by the utilization of condenser and self heat radiator, and improved generating efficiency.

The invention relates to a bionic navigation method and a navigation positioning system based on remote sensing sky polarization mode patterns. The method comprises the following steps: simultaneously measuring three images of light intensity of sky light by adopting a full-sky polarization remote sensing measurement method, and solving a polarization degree and a polarization azimuth angle which describe the polarization state of the sky light, thereby obtaining the remote sensing sky polarization mode patterns; analyzing each influence factor of the polarization degree and polarization azimuth angle in the remote sensing sky polarization mode patterns by adopting a full-sky polarization light measurement method, thereby obtaining the external conditions which are most suitable for polarization navigation; solving the sun azimuth angles at different time by combining celestial navigation theory knowledge, and amending the included angle between the sun meridian and a carrier by utilizing the sun azimuth angles, thereby obtaining a course angle taking geographical north and south as the reference directions; and processing the polarization navigation blind spot by adopting the combined navigation mode of a GPS (global positioning system) navigation mode and a polarization navigation mode. The bionic navigation method and navigation positioning system based on remote sensing sky polarization mode patterns can be widely applied to the measurement and research of navigation positioning under different conditions, and is a special new technology which enables the remote sensing observation image to serve the navigation positioning method and system by utilizing the bionic means.

The invention discloses an automatic tracking linkage mechanism of a solar energy concentration photovoltaic power generating array, which comprises a solar concentrator array, an altitude linkage mechanism, and an azimuth linkage mechanism. The solar energy concentration photovoltaic power generating array drives the whole array of all concentrators to obliquely track a solar altitude through a set of altitude driving mechanism, and drives the whole array of all concentrators rotate around a transmission shaft to track a solar azimuth through a set of azimuth driving mechanism. The whole solar energy concentration photovoltaic power generating array only adopts the set of the altitude driving mechanism and the set of the azimuth driving mechanism, so that the whole array of all concentrators realize tracking the running of the sun by two-dimensional linkage, and the tracking cost is low; moreover, the altitude driving mechanism and the azimuth driving mechanism are formed by simple mechanisms completely, so that the whole solar energy concentration photovoltaic power generating array is manufactured easily, and has high tracking accuracy and strong capability of strong wind resistance.

The invention belongs to the field of bionic polarized light navigation, and discloses a solar azimuth acquisition method based on atmospheric polarization modes. Firstly, an image type polarized light sensor is utilized to measure the atmospheric polarization modes, including a polarization angle mode and a polarization degree mode; secondly, according to the polarization angle mode, an optimization equation for a solar direction vector is created, the optimal estimation of the solar direction vector is implemented by solving eigenvectors of a matrix , and a projection of the solar direction vector is a solar azimuth; meanwhile, a gradient is worked out after the polarization degree mode is smoothed, the solar meridian is estimated according to the probability density distribution of a gradient direction, and thereby a solar azimuth can be obtained; and finally, results of the two methods are comprehensively weighted, so that an optimal estimation of the solar azimuth is obtained. Under the condition of not adding hardware structures, the invention sufficiently utilizes information contained in the polarization angle mode and the polarization degree mode to estimate a solar azimuth, and has the advantages of simple principle, high estimation precision and good robustness.

The invention discloses a method for automatically tracking solar energy by using temperature variation, and relates to the field of solar energy tracking brackets. The method is characterized in that: the periodic variation of the solar energy in a receiving place is used for acting on a control temperature sensitive medium to form the periodic temperature variation of the temperature sensitive medium, the temperature sensitive medium is subjected to expansion and contraction, and a temperature displacement converter converts the variation of expansion and contraction into displacement, so that the pitch angle or azimuth angle of the connected solar energy receiving surface is adjusted, and the solar energy is inaccurately tracked. By using the periodic variation of environment temperature in the receiving place, which is formed by the annual periodic variation of the solar energy, an altitude angle of the sun is tracked through the displacement of the temperature displacement converter; and by using the east-west periodic variation of the sun every day, the azimuth angle of the sun is tracked through the displacement of the temperature displacement converter.

A multi-plane reflecting mirror solar energy condensation device includes a foundation component, a rotation component, a planemirror supporting structure and a multi-plane reflector array, wherein the multi-plane reflector array consists of a plurality of independent single planar reflecting mirrors; the plane supporting structure includes an H-type main frame and a plurality of parallel support strips fixed on the H-type main frame; the independent single planar reflecting mirrors are connected with the parallel support strips through universal joint brackets; the rotation component includes an electric rotating disc and an electric push rod; the electric push rod expands and contracts to push the pitching angle of the H-type main frame, so as to enable the multi-plane reflecting mirror array to track the solar altitude; and the electric rotating disc rotates to enable the multi-plane reflecting mirror array to track the solar azimuth. The device provided by the invention can be used for acquiring the most uniform focusing spots, fundamentally solves the problem of efficiency reduction caused by nonuniform condensation in photovoltaic power generation, has a simple structure, and is low in cost.

The invention belongs to the field of bionic polarizing light navigation, and discloses a heading angle estimating method based on an atmosphere polarizing angle mode under complicated environments. The heading angle estimating method comprises the following steps of firstly, utilizing an image type polarizing light sensor to measure the polarizing angle mode of atmosphere; then, according to astronomical almanac, calculating a zenith angle and an azimuth angle of the sun; then, according to a one-order Rayleigh scattering model, establishing an expression formula of sun meridian direction corresponding to the polarizing angle and the zenith angle of the sun under a carrier system, and estimating the optimum sun meridian direction based on a voting mechanism; finally, according to the azimuth angle of the sun and the optimum sun meridian direction, solving the heading angle of a carrier. The heading angle estimating method has the advantages that under the condition of not increasing a hardware structure, the polarizing angle mode and the zenith angle and azimuth angle of the sun are fully utilized; under the shielding conditions of cloud layers, buildings and tree leaves on sky, the problem of estimating of the heading angle of the carrier is effectively solved by the voting mechanism; the principle is simple, the estimating accuracy is high, and the robustness is good.

The invention discloses an automobile sun shield adjusting device and an automobile. The automobile sun shield adjusting device comprises a central control unit, a GPS positioning component, a light sensor assembly, a facial recognition assembly and a sun shield drive assembly, wherein the GPS positioning component, the light sensor assembly, the facial recognition assembly and the sun shield drive assembly are connected with the central control unit. The vertical opening and closing angle and the horizontal rotary angle of an automobile sun shield are calculated through the central control unit according to current automobile position information output by the GPS positioning component, sun illumination intensity and sun azimuth angle which are output by the light sensor assembly and human eye relative position information output by the facial recognition assembly; the central control unit converts the vertical opening and closing angle and the horizontal rotary angle into corresponding control signals and outputs the control signals to the sun shield drive assembly; and the vertical opening and closing angle and the horizontal rotary angle of the automobile sun shield are automatically adjusted through control over the sun shield drive assembly, and sunlight is blocked. Compared with manual adjustment, the automobile sun shield adjusting device achieves automatic adjustment of the automobile sun shield, and therefore the driving and taking safety can be improved.

The invention discloses a passive automatic tracking device for a solar photovoltaic panel to track the solar azimuth. The passive automatic tracking device comprises a supporting plate fixed on the bottom of the solar photovoltaic panel and a rotating shaft fixedly connected with the supporting plate; the bottom of the rotating shaft is in shaft connection with a bottom rod; the outer wall of the bottom rod is horizontally and fixedly connected with a support arm; the tracking device further comprises a hydraulic cylinder and a gas storage tank which is arranged on the outer side of the solar photovoltaic panel; the tail part of the hydraulic cylinder is hinged to the bottom of the supporting plate; a piston rod of the hydraulic cylinder is hinged to the support arm; the bottom of the gas storage tank is communicated with an oil hole of the hydraulic cylinder through a connecting pipe; the top of the gas storage tank is provided with an air pressure adjustment nozzle and a sealing cover; the lower part in the gas storage tank, the connecting pipe and the hydraulic cylinder are filled with hydraulic oil; the upper part in the gas storage tank is filled with inert gas. The piston rod of the hydraulic cylinder stretches out and retracts back by the characteristic of expansion caused by heat and contraction caused by cold of the inert gas in the gas storage tank, thus, the solar photovoltaic panel is driven to track the solar azimuth, no power supply is needed, the structure is simple, the cost is low, and the passive automatic tracking device is suitable for large-scale popularization and application.

A method for obtaining satellite solar angle and time on the basis of satellite orbit characteristics comprises the following steps: (1) according to the satellite sun-synchronous orbit characteristics, calculating the orbit inclination angle from the height of the satellite orbit; (2) according to the number of satellite orbits, calculating the longitude and Beijing time of sub-satellite point of the position where a satellite descending orbit intersects the equator, and converting the Beijing time into the local time so as to obtain the time of the position; (3) calculating to obtain the local times of any latitude where the satellite sub-satellite point pass; (4) according to the orbit injection error of satellite orbit inclination angle and the daily change rate of satellite orbit inclination angle during the operation process, calculating to obtain the change of satellite local time and actual local times of any latitude; (5) calculating to obtain the actual local time after satellite side-sway; (6) calculating to obtain the solar altitude, solar azimuth, and the Beijing time of an observation site. The provided method can precisely obtain the solar altitude, solar azimuth, and imaging time of a satellite according to a remote sensing satellite nominal orbit and changes thereof without knowing the satellite ephemeris data and specific imaging time.

The invention relates to a thick sun sensor for sun azimuth angle measurement, which comprises a main structure, a base, a battery pack, a standard mirror, an electric connector and an earthing assembly, wherein the main structure is mounted on the base; the main structure is rectangular pyramid shaped; mounting grooves are formed in both the four side surfaces and the top surface of the rectangular pyramid; the mounting grooves are used for mounting the battery pack; a ring band surface is arranged on the periphery of the four side surfaces of the rectangular pyramid; a light blocking ring is arranged on the outer side of the ring band surface; the light blocking ring adopts a thin-walled ring band structure; the height of the light blocking ring is not larger than the height the undermost position of a sensitive surface of the battery pack; the standard mirror, the electric connector and the earthing assembly are mounted on the base. The thick sun sensor has the advantages of simple structure, small size, light weight, large measurement viewing field (2 pi solid angle), stray light interference resistance and space irradiation resistance, and has a main backup measurement mode.

The invention provides a single satellite image-oriented self-acquired triangular element height calculation method. The method comprises the steps of calculating three angle parameters, namely a sun elevation angle, a sun azimuth angle and a satellite azimuth angle, according to direction information in a single satellite image and a relation between the sun azimuth angle and the sun elevation angle, performing equivalent expression on a satellite elevation angle through a building height and a building projection length, and finally calculating a triangular element height which does not contain the satellite elevation angle. The effect of realizing calculation on the height of a building in the single satellite image is good.

The present invention provides a floating solar power generation single-axis tracking system with low cost and high reliability and a control method thereof. The system comprises a floating power platform and an automatic tracking control system. The floating power platform autonomously rotates or moves in the horizontal dimension to automatically track solar azimuth. The automatic tracking control system comprises a satellite positioning subsystem, a shore-based ranging positioning subsystem, a sensing acquisition subsystem, a master control subsystem, and a power control subsystem. The present invention provides the control method based on the above floating solar power generation single-axis tracking system, a neural network algorithm is used to analyze floating power platform relative geographic coordinates, absolute geographical coordinates, time, a sun incidence angle, the solar azimuth and other data in real time, a best lighting position is obtained, an underwater driver is controlled to drive the floating power platform to rotate or move to a target position, and the real-time tracking of the solar azimuth by the floating power platform is achieved.

The invention relates to a solar tracking device, in particular to a solar tracking device based on bionic polarized light detection. Extraction of the polarization angle and degree of polarization in an atmospheric polarization mode is achieved through polarized light detection sensors by imitating a compound eye navigation model. Firstly, a central control and information processing unit drives an actuating mechanism of a horizontal servo motor according to the included angle between the solar azimuth and polarization angle output by two polarized light sensors on a horizontal tracking physical structure unit, and then solar azimuth direction tracking is achieved; then, the central control and information processing unit controls an actuating mechanism of a vertical servo motor to rotate according to degree-of-polarization information output by two polarized light sensors on a vertical tracking physical structure unit, and then solar altitude direction tracking is achieved; finally, fine adjustment of two platforms is carried out through output of a natural light sensor. In this way, solar tracking is successfully achieved through the solar tracking device based on bionic polarized light detection.

The present invention provides a high-resolution remote sensing image building height estimation method based on a shadow. The method comprises the steps of: performing shadow detection of an originalimage to be detected, obtaining a shadow detection result map, and employing a morphological processing to obtain a more independent shadow and a shadow with more smooth edge; employing the area andthe length of the shadow and the imaging features of a satellite image to determine the direction of the shadow; determining the length of the shadow corresponding to a building through the shadow direction and the statisticals of the length of the shadow corresponding to the building; obtaining a solar azimuth through the shadow direction, and calculating a solar altitude through solar azimuth; and employing the solved shadow length and the solar altitude to estimate the height of the building. The high-resolution remote sensing image building height estimation method fully utilizes the features of the building shadow to achieve the building height estimation to effectively detect the remote sensing image building height with the shadow so as to provide effective information for remote sensing related application such as building three-dimensional reconstruction, city building historical information obtaining, city change detection.

The invention discloses a method for removing a shadow of a specific target image. Aiming at an object with known dimensions, the method comprises the following steps: figuring out a solar azimuth angle based on a geographical position of the object and current time, acquiring a projective direction of the object, combining a shooting direction of a camera to determine a relative positional relationship between the object and its shadow in an image, reserving target image pixels which correspond to the object in the image, and removing shadow image pixels which correspond to the shadow, thereby obtaining a shadow-removed image. The method of the invention has the benefits that: the arithmetic is simple; an image formed by the shadow of a specific target in a picture can be removed quickly and effectively, therefore, a detecting system can not be affected by the shadow in detecting the target; and the method of the invention is further suitable for engineering real time application.

The invention discloses a linkage small-sized heliostat system. The linkage small-sized heliostat system consists of at least two small-sized heliostats (1) and an azimuth angle drive device (25); heliostat rollers (3) on the lower parts of heliostat upright posts (4) drive the heliostat upright posts (4) and heliostat reflecting surfaces (10) to rotate on heliostat bases (2); an azimuth angle drive roller (22) on the upper part of the azimuth angle drive device (25) is connected with the heliostat roller (3) adjacent to the azimuth angle drive roller (22) through a connecting element (14); adjacent heliostat rollers (3) are connected with each other through the connecting piece (14); the azimuth angle drive device (25) can drive a plurality of small-sized heliostats (1) to track the sun in the direction of a sun azimuth angle; and the upper parts of the heliostat upright posts (4) are provided with azimuth angle adjustment mechanisms (30) which are used for adjusting the heliostat reflecting surfaces (10) of the small-sized heliostats (1) at different positions, so that the sunlight reflected by the heliostat reflecting surfaces (10) aims at a target point in the direction of thesun azimuth angle.

The invention relates to a cultivation system, in particular to a sun-oriented multiplayer stereoscopic strawberry cultivation system capable of automatically rotating and particularly provides an automatically-rotatable automatic sun-oriented multiplayer stereoscopic strawberry cultivation system and an application method thereof. According to local longitude and latitude of a greenhouse and changes of solar azimuth in main lighting time in a day, an automatic control cabinet controls a motor in different lighting time periods to drive a crank connecting rod to rotate a cultivation frame by a reasonable angle to enable strawberries to be exposed to sunlight to the greatest extent, so that the problems about lighting uniformity and shading are solved. The automatic sun-oriented multiplayer stereoscopic strawberry cultivation system has the advantages that light inlet quantity of the cultivation system is increased effectively, photosynthesis of the strawberries can be improved effectively, yield can be increased and quality can be improved; the strawberry cultivation system is simple in structure and low in cost, and the adjusting process is controlled completely automatically, so that labor is saved greatly, simplicity and convenience in operation are achieved, operation effect is good, and energy conservation and practicability are realized.

The invention provides a no-shield tracking method of a biaxial solar photovoltaic power generation system. The no-shield tracking method comprises the steps of: judging a shielding situation between shades of solar panels and other solar panels based a solar azimuth when the solar panels are vertical to the sunlight; dynamically adjusting an angle of inclination of each solar panel based on the shielding situation to enable the shade of each solar panel not to shield neighboring solar panels. As the angle of inclination of each solar panel is added gradually from zero degree, so that the shielding phenomenon can be avoided at any moment when the solar panels track the sun, all the solar panels can generate power uniformly, and a power generation device is well protected; furthermore, the distance among the solar panels is unnecessary to add, so that the daily total generating capacity and the power generation efficiency of the solar panel array in the same condition are improved.