31 results about "Solar image" patented technology

The invention discloses a counterglow tracking method for a disc type solar thermal power generation system, comprising the following steps of: 1) acquiring solar image information, and analytically processing the solar image information by software, to obtain the position of the sun; 2) detecting the position of a spotlighting disc, and obtaining the deviation between the spotlighting disc and the sun light ray according to the position of the sun and the position of the spotlighting disc; and 3) controlling the position of the spotlighting disc of the disc type solar thermal power generation system according to the deviation, so that the light ray of the sun light is reflected by the spotlighting disc to be completely focused. The counterglow tracking method realizes the offset correction of the error according to the sequence such as obtaining the solar image information, obtaining the position of the sun and the position of the spotlighting disc, computing the deviation, controlling the action of the spotlighting disc according to the deviation, so that the accumulated error when the spotlighting disc runs can be eliminated, and the exact tracking of the sun can be realized.

The invention relates to a solar image registration method based on normalization cross-correlation and SIFT, and belongs to the field of astronomical technology and image processing. The method comprises the following steps: firstly, carrying out downsampling preprocessing on a group of full-solar observation images from a space-based (SDO) and a group of solar local high-resolution observation images from a ground telescope (NVST) respectively; secondly, using a normalization cross-correlation matching algorithm to solve the problem that the view fields of the to-be-registered area are inconsistent; calculating the optimal matching position of the full-day image and the local high-resolution image, and using the position to intercept a sub-image to serve as a to-be-registered reference image; Performing feature detection on the to-be-registered image by adopting a feature detection operator (SIFT) based on scale invariance to obtain a feature point set; Using an MLESAC algorithm to eliminate mismatching feature point pairs; And finally, solving transformation parameters among the images by using a least square method to obtain a registration result. According to the invention, rapid, automatic and high-precision registration of solar images of different observation sources is realized.

The invention relates to an information processing method of an APS sun sensor, which comprises two calculating modes of capture and tracking. First, pictures are input in a memory, and initial centroid is extracted. Next, corresponding calculation of sun centroid and a hole number is performed, and then calculation of the attitude capture is performed. After the validity of an attitude angle is verified, a system switches to the tracking mode. Data of the pictures and the tracking mode are loaded, the number of windows participating in calculation is adjusted according to the input of ground remote control parameters. The calculation of the sun centroid is performed in the windows, the results of the centroid calculation are used for the calculation of the attitude angle. Then, the size of the attitude angle is judged, and the big angle compensation is needed if the attitude angle is big. At last, the sun sensor outputs the compensated attitude angle. The invention has attitude capture ability with strong robustness, succeeds in capturing the attitude when partial solar image spots shift out of a target surface, compensates the attitude angle under the big angle, adjusts the calculating quantity, improves the calculation precision of the attitude angle under the big angle, and simultaneously improves the data refresh rate of the sensor.

The invention discloses a sun position detection device and method. The device comprises a base, a shell and an upper cover; the shell, the upper cover and the base form a cavity; a camera for collecting solar image is arranged on the base in the cavity; and the upper cover comprises surrounding shading part and a transmitting part located in the center. The invention has the following advantages: (1) the digital camera avoids the high requirements of silicon cell on light source, so that the detection angle (field angle) changes with the light source to a desired size to expand the tracking range on the sun and improve the tracking efficiency; (2) a CCD sensor and a COMS sensor can identify the photos by domains to remove the interference image and obtain a real image of the sun, thereby greatly increasing the tracking precision; and (3) the control signal is output through a way that a single chip microcomputer collects photos and conducts operation analysis on the photo, and the digital collection process overcomes the problem of large error of simulation acquisition.

The invention discloses an intelligent solar flare data observation method, which comprises: starting a solar flare data observation system to acquire solar image data in time and store the solar image data in a memory; and judging if a solar flare outbursts, and if a solar flare outbursts, automatically regulating a preset exposure time and regulating a data acquisition mode at the same time to acquire solar flare data and then storing the flare data or solar image data collected by the solar flare observation system into a hard disk. When the observation method is used, the flare event outburst can be monitored automatically and an alarming information can be given automatically; and in addition, as the method of the invention can be used in the conventional solar flare observation system, the automatic control over the exposure time and acquisition speed is realized, and the acquired flare data have higher time and space resolution.

The present invention provides a solar tracking apparatus for use with a power driving apparatus. The solar tracking apparatus includes: a memory unit for recording a first solar image; an image capturing unit for capturing a second solar image; and an processing unit for obtaining difference between the first solar image and the second solar image; wherein the processing unit activates the power driving apparatus in response to the difference. Furthermore, the present invention also provides a solar power generation system using the solar tracking apparatus. Besides the solar tracking apparatus, the solar power generation system also includes a solar panel; the power driving apparatus for adjusting the position of the solar panel, wherein the processing unit of the solar tracking apparatus activates the power driving apparatus based on the difference so that the solar panel is aligned with the sun to gather the solar energy of the sun.

The invention provides an image despinning device capable of being applied to a slit type grid spectrometer of a solar telescope. The device comprises a solar telescope system (1), an optical fiber clamp slot (2), an area array optical fiber clamp end (3), a support circular disc (4), a rigid connecting body (5), a power-driven rotation platform (6), an optical fiber beam (7), a linear array optical fiber clamp end (8), the slit type grid spectrometer (9), an imaging system (10), a computer data processing system (11) and a rotary angle controller (12), wherein a telescope focal surface is connected with the slit type grid spectrometer in the rear end through the optical fiber beam, according to the principle of simple optical fiber beam flexible image transmitting, relay is carried out on a solar image which enters into the slit type spectrometer, and conversion of the scope of the solar image via flexible rotation is realized. The device is small in structure, light in weight, simple in use and flexible in structure, so that the separation of the telescope system from the spectrometer on a space can be realized, and the position and the placing range of the spectrometer are not limited.

The present invention provides a solar concentrator assembly comprising a non-imaging dish concentrator and a photovoltaic receiver for the application of concentrator photovoltaic system that provides uniform solar flux, matches the square or rectangular solar images to the square or rectangular dimension of the photovoltaic receiver and produces high solar concentration ratio. The present invention also provides a solar concentrator assembly that is cost effective and has simpler mechanical structure.

The invention discloses a narrowband Chan-Vese model underwater multi-object segmentation method for adaptive step initialization. The method comprises the following steps: 1, after smoothing denoising is carried out on a solar image, initial segmentation is completed according to a block mode k-means clustering algorithm to initially judge the position of an underground target; 2, a step area is determined, an adaptive step initialization zero level set function is determined; 3, a Chan-Vese model narrowband level set is used for solar image segmentation to complete two-class and three-class segmentation on an underwater multi-object area; and 4, Chan-Vese model-based objective and quantitative analysis is carried out on a segmentation result. A Chan-Vese model narrowband level set is adopted for solar image segmentation, local optimization can be completed, global search in the existing level set method can be avoided, noise influences in the segmentation result can be reduced to the minimal, and the segmentation precision and the speed can be further improved.

The invention relates to a solar telescope guider taking optical wedges as refractive elements. A video CCD (Charge Coupled Device) is arranged on a guider lens barrel or a main lens barrel. The solar telescope guider is characterized in that four optical wedges are arranged in front of a guided objective lens and are same in angle and shape; the installation positions of the four optical wedges are as follows: the four optical wedges are uniformly distributed at an angle of 90 degrees around the center shaft of the guided objective lens; the mutual directions of the four optical wedges are as follows: the four optical wedges are respectively arranged at angles of 90 degrees; and the parameters of the four optical wedges are as follows: optical wedge angles alpha are 32-40 arc minutes, light deflection angles beta are 16-20 arc minutes, and the glass refractive index n is 1.4-1.6. According to the invention, the defects of low accuracy, low anti-interference capability or high cost or more complex objective lens cutting and deflecting assembly, and the like in the prior art are overcome; and lens surface cutting is prevented in such a way that a solar image is deflected by utilizing the refraction of the optical wedges, so that great convenience for assembly and debugging is achieved. The solar telescope guider disclosed by the invention has the advantages of simple structure, easiness for manufacture and assembly and convenience for batch production.

A solar telescope is disclosed that facilitates safe observation of the sun with minimal setup, targeting effort or operator skill. The folded solar telescope of the invention includes a friction stabilized telescope support system that is capable of maintaining a specified telescope orientation. The telescope further includes a targeting system that comprises one or more pointing aids to simplify the process of aligning the telescope with the sun so a solar image is projected onto a viewing surface.

The invention discloses a starry sky portrait shooting method. The method is realized through electronic equipment. The electronic equipment can display a starry sky portrait photographing mode; in the mode, three function modules and a processing module are arranged, the three function modules are used for obtaining a portrait close-range picture, an unmanned close-range picture and a starry skylong-range picture respectively, and the processing module processes the portrait close-range picture, the unmanned close-range picture and the starry sky long-range picture according to a preset algorithm to obtain a final starry sky portrait picture. Meanwhile, the invention further provides electronic equipment which comprises a processor, a camera, a camera application program and a memorizer,and the camera and the memorizer are connected with the processor. According to the method, multiple frames of portrait close-range, unmanned close-range and starry sky long-range images are automatically shot by adopting different exposure parameters, portraits and shadows thereof are automatically recognized and extracted, and astronomical wind-solar images with clear starry sky and portraits are obtained through multiple frames of image superposition and the like, so that the shooting experience of a user is improved.

The invention, which belongs to the astronomy technology and the image processing field, relates to a macula identification method based on a genetic algorithm and a simulated annealing algorithm. Pretreatment is carried out on an image; expansion and corrosion processing is carried out on a full-disk solar image respectively; a background image after expansion and corrosion is subtracted from thefull-disk solar image to obtain a full-disk solar image with the uniform background; mean smoothing filtering is carried out on the full-disk solar image with the uniform background and noise reduction is carried out; two groups of thresholds are evolved by using a genetic algorithm; the two groups of thresholds are processed by using a simulated annealing algorithm respectively to obtain a new population; whether an exit condition is met is determined; if so, two thresholds of an optimal entropy are found out from the population to segment the image; small area block removing processing is carried out on a segmentation result; and then a segmented image is marked and displayed.

The invention discloses a heliostat light path closed-loop control system and method. The system comprises a facula inductor, a heliostat rotation controller and a calculation unit, wherein the faculainductor is fixed to a heliostat and rotates synchronously along with the rotation of a reflective surface of the target heliostat; the calculation unit is used for calculating the deviation of an actual position from an expected position of a solar facula or the deviation of an actual position from an expected position of a solar image; the heliostat rotation controller is fixed to the target heliostat; and the calculation unit and the heliostat rotation controller perform data exchange with each other, and the heliostat rotation controller and the facula inductor perform data exchange witheach other. According to the heliostat light path closed-loop control system and method, real-time control over the attitude of the heliostat is realized by controlling the orientation of incident light or the orientation of reflected light according to the light path reflection principle, the problem that the attitude of the heliostat cannot be corrected in real time based on light path feedbackin an open-loop control mode is effectively solved, and the heliostat light path closed-loop control system with high precision, high efficiency and real-time performance is realized.

The embodiment of the invention discloses an anti-burning method and device for thermal imaging equipment, the thermal imaging equipment and a medium, and the method comprises the steps: obtaining time information and weather information, and determining whether the current time meets a preset judgment condition or not according to the time information and the weather information; if yes, attitude data of the thermal imaging equipment are read, and whether an anti-burning area exists in a thermal imaging picture or not is determined according to the attitude data; if yes, determining whether a sun image exists in the anti-burning area or not by adopting a preset model; if yes, an anti-burning control instruction is generated to control the thermal imaging equipment to execute anti-burning operation; according to the technical scheme, the anti-burning detection precision of the thermal imaging equipment is improved, and the false alarm problem of the thermal imaging equipment in the anti-burning process is reduced.

The invention discloses a composite light-transmitting type solar image projector. A convex lens and a concave lens, which are overlapped with each other, are arranged in a cylinder. A telescopic lens barrel is connected to one end of the cylinder, wherein the concave lens is arranged at the end. A microscope lens which is a 15X microscope lens is arranged at one end of the telescopic lens barrel. The composite light-transmitting type solar image projector has the advantages that: by overlapping the convex lens and the concave lens, an object can be more clearly observed; by using the telescopic lens barrel and the microscope lens, clear solar faculae can be projected; a total solar eclipse can be observed in a mode of observing a solar image projection; and the composite light-transmitting type solar image projector is simple in structure and convenient to use.

The invention relates to a device and a method for detecting whether focusing of a tower-type solar power generation system is precise. The device comprises a first detection body and a second detection body, wherein the first detection body has a first plane, a second plane and a third plane which can reflect light rays and allow the light rays to penetrate through, and the first plane, the second plane and the third plane are arranged at 90 degrees and intersect at a point O; and the second detection body has a fourth plane which can reflect light and allow the light to penetrate through, and the fourth plane is obliquely arranged on the front side, away from the point O, of the first detection body. According to the device and the method, the reflection and light transmission principlesof light are fully utilized, the irradiation direction of solar rays is fed back by means of images of the sun, whether focusing of a heliostat is precise or not can be directly judged through judging whether the solar images are aligned with a heat collector of the tower-type solar power generation system, the detection is very intuitive and convenient, the detection time is greatly saved, and the correction efficiency is improved; and the device is simple in structure, low in cost, and convenient to realize large-scale application.

The invention relates to the technical field of science popularization education, in particular to a solar telescope exhibition system and method capable of automatically adjusting an exhibition mode. The invention discloses a solar telescope exhibition system and method capable of automatically adjusting an exhibition mode. The solar telescope exhibition system comprises handheld electronic equipment, a control computer, imaging display equipment, audio playing equipment, a lamplight assembly and an infrared detection device. The handheld electronic device, the imaging display device, the audio playing device, the light assembly and the infrared detection device are electrically connected with the control computer. Scientific-level images can be acquired from the solar telescope structure, the solar telescope rear-end instrument and the solar telescope through sound, light, images and the like, it is guaranteed that the display content of the solar images watched by tourists is not changed, the exhibition mode is automatically adjusted according to the crowd density in an exhibition hall, intelligent crowd dredging is achieved, and the exhibition efficiency is improved. And the crowding condition of crowds in the exhibition hall is relieved.

An coronagraph optical system and method for continuously imaging a wide field of view that includes the Sun. Examples of the coronagraph optical system include an all-reflective foreoptics assembly that receives light rays from a viewed scene and a direct solar image of the Sun, a sensor assembly configured to produce an image of the viewed scene, an all-reflective relay optics assembly configured to receive the light rays from the foreoptics assembly and to reflect the light rays to the sensor assembly, and a solar rejection optical component positioned between the foreoptics assembly and the relay optics assembly and dynamically configurable such that the direct solar image of the Sun is reflected away from the relay optics assembly and the light rays are reflected to the relay optics assembly while an entrance aperture of the foreoptics assembly is continuously positioned towards the Sun.