WO2011066190A2 - Système de commande d'héliostat utilisant des appareils de prises de vue - Google Patents

Système de commande d'héliostat utilisant des appareils de prises de vue Download PDF

Info

Publication number
WO2011066190A2
WO2011066190A2 PCT/US2010/057419 US2010057419W WO2011066190A2 WO 2011066190 A2 WO2011066190 A2 WO 2011066190A2 US 2010057419 W US2010057419 W US 2010057419W WO 2011066190 A2 WO2011066190 A2 WO 2011066190A2
Authority
WO
WIPO (PCT)
Prior art keywords
heliostat
receiver
camera
image
control system
Prior art date
Application number
PCT/US2010/057419
Other languages
English (en)
Other versions
WO2011066190A3 (fr
Inventor
John S. Fitch
Ross Koningstein
Douglas J. Ricket
Vincent Mo
Original Assignee
Google Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Google Inc. filed Critical Google Inc.
Publication of WO2011066190A2 publication Critical patent/WO2011066190A2/fr
Publication of WO2011066190A3 publication Critical patent/WO2011066190A3/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
    • G01S3/7861—Solar tracking systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F24S2050/25—Calibration means; Methods for initial positioning of solar concentrators or solar receivers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

Definitions

  • the present disclosure relates generally to controlling heliostats using cameras.
  • a heliostat solar energy system generally includes a number of heliostats configured to reflect light into a receiver. The resulting heat can then be converted into power.
  • Use of heliostats as a source of solar energy often requires receiver temperatures of nearly 1000°C, which in turn requires sunlight to be reflected from the heliostats into the receiver at high concentrations.
  • a heliostat control system includes a receiver located within a receiver volume and a view port located proximate to the receiver volume.
  • the receiver is configured to receive sunlight reflected from a mirror of a heliostat.
  • the view port is optically connected to a camera, and the camera is configured to generate an image including pixels having a brightness dependent on an orientation of the mirror.
  • the view port can be located within the receiver volume.
  • There can be a plurality of heliostats the receiver can be configured to receive sunlight reflected from a mirror of each of the plurality of heliostats, and the image can include pixels having a brightness dependent on an orientation of each of the mirrors.
  • the heliostat control system can further include a controller configured to receive the image from the camera and calculate an error in the orientation.
  • the controller can be configured to send a signal to change the orientation of the mirror based upon the determined error.
  • the controller can be configured to associate a portion of the image with the heliostat.
  • the heliostat control system can further include a cooling system configured to cool the camera.
  • the camera can be located in the receiver volume.
  • the camera can be located outside of the receiver volume.
  • the heliostat control system can further include a reflecting mirror configured to reflect sunlight away from the receiver after it has entered the view port.
  • the heliostat can further include an optical filter configured to reduce the intensity of the sunlight after it has entered the view port.
  • the heliostat control system can further include a shading layer configured to protect the camera from sunlight.
  • the heliostat control system can further include optics configured to alter the sunlight.
  • the view port can be configured to receive a portion of the sunlight that is received by the receiver.
  • a method of heliostat control includes receiving sunlight in a receiver, generating an image from a camera, and determining an error in an orientation of the mirror based upon the image.
  • the sunlight is reflected from a mirror of a heliostat.
  • the camera is optically connected to a view port located within the receiver.
  • the sunlight can be reflected from a plurality of mirrors, each mirror can have a corresponding heliostat, and determining an error can include determining an error in an orientation of each of the mirrors.
  • the error can be determined based upon a brightness of a portion of the image.
  • the method can further include sending a signal to change the orientation of the mirror based upon the determined error.
  • the method can further include assigning a portion of the image to the heliostat.
  • a method of heliostat control includes receiving sunlight in a receiver, generating a first image from a camera located proximate to the receiver, oscillating the heliostat at a known frequency, and assigning a portion of the image to the heliostat by identifying the oscillation in the first image.
  • the sunlight is reflected from a mirror of a heliostat.
  • the method can further include generating a second image from the camera, locating in the second image the assigned portion, and determining an error in an orientation of the mirror based upon the assigned portion.
  • the method can further include sending a signal to change the orientation of the mirror based upon the determined error.
  • Certain implementations may have one or more of the following advantages. Using cameras to detect the positioning of a heliostat can provide more precise positioning, be less expensive, require fewer components, and require less frequent maintenance and calibration than other tracking mechanisms, such as placing a sensor on each heliostat. Detecting the positioning of the heliostats allows the heliostats to be adjusted to provided higher concentration of the sunlight in the receiver. Higher concentration of sunlight in the receiver provides a higher quality or temperature of heat for the production of solar power.
  • misalignment of the heliostats can quickly be determined. Determining misalignment more quickly can ensure that heliostats are adjusted quickly. Adjusting heliostats quickly allows the receiver to have a higher
  • Oscillating a heliostat at a known frequency allows a more accurate determination of which portions of an image of the heliostat field correspond to that particular heliostat. Accurate assignment of portions of the heliostat field image allows for a more accurate determination of which heliostat needs to be adjusted.
  • FIG. 1 is a schematic diagram of a heliostat control system including cameras located inside the receiver.
  • FIG. 2 is a schematic diagram of a camera system having a view port located inside the receiver and a camera located outside of the receiver.
  • FIG. 3 is a schematic diagram of a heliostat control system including cameras located outside of the receiver.
  • the concentration of sunlight reflected into the heat-collecting receiver can be lower than the theoretical ideal due to misalignment of the heliostat mirrors caused by errors such as difficulties detecting the orientation of the mirrors or relative position of the receiver, deformation of the mirror, or movement of the heliostat or receiver by natural causes.
  • Using a camera to generate an image including pixels having a brightness dependent on the orientation of the heliostat mirrors allows sunlight to be more accurately reflected into the receiver.
  • a heliostat control system 500 e.g., for a solar power plant, includes a field of heliostats 100, which can include up to hundreds or thousands of heliostats (only two heliostats 100a, 100b are shown in FIG. 1).
  • Each heliostat 100 includes a mirror 160 having a reflective surface 165 on the face of the mirror 160 closest to the sun 300.
  • the reflective surface 165 can be flat or curved for better optical performance.
  • the reflective surface 165 can be in the shape of a quadrilateral, e.g., a square, or it can have rounded edges, e.g., be circular.
  • the mirror 160 can rest on a foundation 1 10, which can be partially below ground.
  • An actuation system 132 is configured to move the heliostat mirror 160.
  • the actuation system 132 can include multiple motors, such as a motor 120 to move the heliostat 100 in the azimuth direction using a motor shaft 130, and a motor 125 to adjust the altitude, i.e., angle of elevation, of the heliostat using a motor shaft 135.
  • the actuation system 132 further includes a transceiver 190 to receive commands directing the movement of the mirror 160. Wires 195 can electrically connect the transceiver with the motors 120, 125.
  • the actuation system can include hydraulic, pneumatic, cable and pulley, ballasted, or ball and socket mechanisms to move the heliostat mirror in the azimuth direction and/or to adjust the altitude.
  • the heliostat control system 500 further includes a tower system 200.
  • the tower system includes a receiver 230 to receive sunlight and a camera 250, which can optionally include a filtering element 255 to reduce the intensity of the sunlight, and an optical element 259 (see FIG. 2) to expand, contract, or condition the sunlight as necessary prior to entry of the beam into the camera.
  • the receiver 230 can be shaped to receive concentrated sunlight, such as be circular in shape.
  • the region in which the receiver is located can be called the "receiver volume" or the "hot region” of the tower system 200.
  • the receiver 230 can be located inside a housing 220 and can sit on top of a foundation structure 210, which can be partially below ground.
  • the heliostat control system 500 further includes a controller or computer 290 to receive image data from the cameras 250, to compute the movement of any heliostat mirrors 160 necessary to keep the heliostat oriented to reflect light to the receiver 230, and to send commands to the transceivers 190 of the heliostats.
  • the computer 290 can be part of the tower system 200, as shown in FIG. 1.
  • sunlight rays 320, 310 from the sun 300 can strike the reflective surface 165 of the heliostat mirrors 160.
  • the reflective surface 165 can then reflect rays 321, 311 towards the receiver 230.
  • the reflected rays 321, 311 in addition to rays reflected from other heliostats in the field, can heat the receiver 230 to temperatures of between 900°C and 1200°C, such as between 950°C and 1150°C.
  • the heat can be used to drive various heat engines to produce power. For example, the heat can be used to warm cold air, which can then be expanded through a turbine engine which turns a generator shaft, which creates power.
  • the more concentrated the sunlight is in the receiver 230 the higher the temperature of the receiver 230, and the more efficient the power generation of the system 500 can be.
  • the normal vector of the reflective surface 165 In order to direct concentrated rays towards the receiver 230, the normal vector of the reflective surface 165 must always bisect the angle between the rays 310, 320 from the sun and the rays reflected towards the center of the receiver 230. Thus, as the sun 300 moves across the sky, the orientation of the reflective surface 165 of the mirrors 160 must be adjusted to ensure that the reflected rays are hitting the receiver 230 without causing too much spillage, i.e., causing too many rays to be reflected outside of the receiver 230.
  • the camera 255 mounted on the receiver 230 can be used to determine whether a particular mirror 160 is oriented to reflect substantially the maximum amount of light into the receiver, i.e., to orient the reflective surface 165 such that its normal vector substantially bisects the angle between the rays from the sun and the rays reflected towards the receiver.
  • the camera 255 observes and produces an image.
  • the image produced by the camera 250 can include pixels having a brightness dependent on the orientation of the various heliostats. As a result, as discussed below, the image can be used to determine an error in the orientation of the mirrors.
  • a calibration step can be required prior to determining the actual error in orientation of a heliostat.
  • the assignment of a particular heliostat to a set of pixels in the camera's imaging array can be determined.
  • the camera 250 can observe and produce an image of the heliostat field. Portions of the image, or groups of pixels, can be assigned to a particular heliostat.
  • the heliostat can be oscillated at a known frequency. The computer 290 can then watch for that frequency of blinking in the image in order to identify that heliostat in the pixel array of the image.
  • each heliostat in an entire field of heliostats may be identified. Such a mechanism is important for unique identification of each heliostat.
  • the computer 290 can maintain a database having the positions of all of the various heliostats in the field and the portions of the image corresponding to each of those heliostats.
  • any new bright images that seem out of place may be compared with the original calibration images to look for changes.
  • the system can automatically detect the positions of all of the heliostats in the field and recalibrate as necessary .
  • the system 500 can be used to determine an error in an orientation of the mirrors (i.e. to determine whether the mirror is oriented to reflect a maximum amount of light into the receiver 230) and subsequently to change the orientation of the mirrors 160 such that they reflect substantially the maximum amount of light into the receiver 230.
  • the computer 290 can try to maximize the sunlight seen by the camera 250 from each heliostat. If a portion of the image assigned to a particular heliostat does not include a bright spot, or includes a spot that is not as bright as expected, the computer 290 can determine that the mirror 160 for that heliostat is not oriented accurately. For example, in FIG.
  • the computer 290 can send a command to motors on a particular heliostat, such as heliostat 100b in FIG. 1, to direct the heliostat to move its mirror 160 accordingly.
  • the computer 290 can send a command, such as through a wireless or wired signal, through a transceiver 190 on the heliostat, which can in turn send a signal through wires 296 (or optionally can send a wireless signal) to the motors 120, 125 on the heliostat.
  • the motors can in turn adjust the mirrors 160 as directed.
  • the motor 120 might first be commanded by the computer 290 to move a mirror 160 of a heliostat in a particular direction along the azimuth. If the brightness for the portion of the image assigned to that heliostat increases, then the computer 290 can command the motor 120 to continue to move the mirror 160 in that direction. In contrast, if the brightness decreases, then the computer 290 can command the motor 120 to move the mirror 160 in the opposite direction. These adjustment steps can then be repeated for elevating the mirror with motor 125.
  • the system 500 can also use additional factors to optimize the movement of the heliostats.
  • the computer 290 can take into account celestial data and data of previous days' heliostat orientation paths. Further, the computer 290 can observe the image of the sun and use its distinct features, such as solar flares, to determine which direction to move.
  • a cooling system can be used to protect the camera.
  • a jacket of coolant surrounding the camera can be connected to an external liquid coolant circulation system. Filters in front of the camera can allow only light at particular wavelengths to enter the camera while keeping the majority of the thermal energy away from the camera.
  • a camera system 600 can be used to protect the cameras 250 from the heat.
  • the camera system 600 includes a view port 253 constructed of materials that withstand intense heat, such as ceramics, minerals, and metal alloys. In some embodiments, the materials are cooled in order to increase their resistance to heat.
  • the view port 253 can extend through the receiver 230, such as through the center of the receiver or just off the center of the receiver, or it can extend just outside of the receiver.
  • the view port 253 can include an aperture that allows in only small amounts of light to pass, which can limit the amount of damaging thermal energy that enters the camera and can help sharpen the image.
  • the camera system 600 can further include a filter 255, optics 259, and a camera 250.
  • a reflecting mirror 257 can be positioned on a base 258 between the view port 253 and the camera 250.
  • the reflecting mirror can be tilted as an angle between 0° and 90°, such as between 30° and 60°, for example 45.°
  • a shading layer can extend outward from the receiver to keep spilled sunlight from hitting and damaging the camera 250 and related components.
  • This shading structure could be made of reflective material, ceramic material, refractory material, or actively cooled material.
  • the optical path can be routed from the viewport to cameras located behind the receiver itself.
  • sunlight 351 reflected from heliostats 100 can travel through the view port 253, such as through an aperture in the view port.
  • the sunlight can further travel through the filter 255 to reduce the intensity of the sunlight to avoid damaging of the camera 250 and other components such as mirror 257 or optics 259.
  • the Sunlight can then reflect off of the deflecting mirror 257 in order to move the sunlight from the region of the heat engine Finally, the sunlight can travel through optics 259 to expand, contract, or condition the sunlight as necessary to get the best accuracy, prior to entry of the sunlight into the camera.
  • the camera can then produce an image including pixels having a brightness dependent on the orientation of the mirrors 160 of heliostats in the field. Such a configuration allows the rays to be sensed close to, or at the border of, the receiver 230 while keeping the electronic components of the camera 250 away from the hot environment of the receiver 230.
  • a heliostat control system 700 includes multiple cameras 250 placed outside of the receiver 230. Multiple cameras, e.g. four cameras, can be spaced around the receiver, e.g., above and below and to either side of the receiver 230. The cameras 250 can be placed in proximity to the receiver where there is likely to be more spillage of sunlight, i.e., rays missing the receiver. For example, if the reflecting element 165 is rectangular in shape, and the receiver is circular in shape, the cameras can be placed around the corners of the receiver where there is likely to be more spillage. [0037] In operation, each camera 250 can produce a separate image of the same portion of the heliostat field.
  • the computer 290 can determine whether a particular heliostat is misaligned by analyzing the image data for that particular heliostat. In this embodiment, however, because the cameras 250 are not centered in the receiver 230, the amount of sunlight seen by the camera from each heliostat 100 is not maximized. Rather, the image can be compared to the expected brightness, whether more or less bright, and the heliostats adjusted accordingly.
  • the resulting images can be compared to one another. If the brightness is different from one camera to another in the portion of the image that corresponds to a particular heliostat, then the computer 290 can determine that the mirror of that particular heliostat is misaligned. For example, as shown in FIG. 3, the ray 321 from heliostat 100b to the receiver 230 is not hitting the center of the receiver. As a result, the camera 250a, to which the ray 321 is closer, will see a brighter spot in the portion of the image corresponding to the heliostat 100b than will camera 250b.
  • the computer 290 can then command the motors of a misaligned heliostat to adjust the mirror 160.
  • the motors 120, 125 can first be commanded to move a particular heliostat in a particular direction.
  • the mirror 160 can be moved by the motors until the mirrors see approximately equal brightnesses from the heliostat.
  • mirror 160 of heliostat 100b can be moved such that the reflected ray 321 moves further away from camera 250a and closer to camera 250b. If the brightnesses of the portions of the images corresponding to heliostat 100b become equal for both cameras 250a and 250b, then the computer 290 can command the motors to stop moving the heliostat. In contrast, if camera 250b begins to see more light from 100b than camera 251, the computer 290 can command the mirror 160 to move back in the opposite direction.
  • the cameras When cameras 250 are placed outside of the receiver 230, as shown in FIG. 3, the cameras need not receive spillage from the rays all of the time in order to be effective. Rather, the system can be configured to be triggered only when the reflected sunlight drifts out of the receiver and onto one of the cameras 250.
  • multiple cameras can be placed in the receiver.
  • multiple view ports can be placed in the receiver, each view port connected to a different camera.
  • multiple cameras can be mounted at a distance from the receiver, and optical paths can be used that project the image to the cameras.
  • the projected image from the field can be incident on the front side of a semitransparent screen.
  • the cameras can observe the backside of this screen, where the intensity is drastically reduced.
  • the screen could be made of glasses, sheets, thin ceramics.
  • a closed-loop heliostat control system can be provided that ensures that sunlight is reflected from each heliostat into the desired receiving location. Given the available speed of image processing, errors in the heliostat reflection can be controlled on a real-time, or near-real time basis. Such a system allows concentrated sunlight to enter the receivers for a large fraction of the day in order to provide sufficiently high temperatures for the creation of solar power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Studio Devices (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

La présente invention concerne un système de commande d'héliostat qui comprend un récepteur positionné à l'intérieur d'un volume de récepteur et un orifice de vue positionné à proximité du volume de récepteur. Le récepteur est configuré pour recevoir de la lumière solaire réfléchie à partir d'un miroir d'un héliostat. L'orifice de vue est relié optiquement à un appareil de prises de vue, et l'appareil de prises de vue est conçu pour générer une image qui comprend des pixels qui possèdent une luminosité dépendante d'une orientation du miroir.
PCT/US2010/057419 2009-11-25 2010-11-19 Système de commande d'héliostat utilisant des appareils de prises de vue WO2011066190A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/626,528 US20110120448A1 (en) 2009-11-25 2009-11-25 Heliostat control scheme using cameras
US12/626,528 2009-11-25

Publications (2)

Publication Number Publication Date
WO2011066190A2 true WO2011066190A2 (fr) 2011-06-03
WO2011066190A3 WO2011066190A3 (fr) 2012-11-01

Family

ID=44061162

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/057419 WO2011066190A2 (fr) 2009-11-25 2010-11-19 Système de commande d'héliostat utilisant des appareils de prises de vue

Country Status (2)

Country Link
US (1) US20110120448A1 (fr)
WO (1) WO2011066190A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117192A1 (fr) * 2014-02-06 2015-08-13 Commonwealth Scientific And Industrial Research Organisation Surveillance et mesure de multiples sources de lumière, notamment des héliostats

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX348026B (es) 2011-03-14 2017-05-24 Solarreserve Tech Llc Aparato y metodo para el señalamiento de fuentes de luz.
CN103874891B (zh) 2011-03-14 2016-08-17 日光储备有限公司 用于感测并指向瞄准光源的光学替换装置
US9183199B2 (en) * 2011-03-25 2015-11-10 Ming-Yuan Wu Communication device for multiple language translation system
US9103719B1 (en) * 2011-05-12 2015-08-11 Sandia Corporation Computation of glint, glare, and solar irradiance distribution
US20120304981A1 (en) * 2011-06-01 2012-12-06 Rolf Miles Olsen Dynamic distributed tower receiver system for collecting, aiming and receiving solar radiation
US20130021471A1 (en) * 2011-07-21 2013-01-24 Google Inc. Reflective Surface Orientating with Multiple View Ports
CN102506810B (zh) * 2011-10-18 2014-11-12 邵文远 塔式太阳能热发电系统的定日镜角度偏差检测方法
US9127861B2 (en) * 2011-10-31 2015-09-08 Solarreserve Technology, Llc Targets for heliostat health monitoring
CN102506811B (zh) * 2011-11-11 2014-07-16 赵跃 基于图像检测的定日镜反射角度在线检测及校正方法
US9606340B2 (en) 2012-01-24 2017-03-28 Solarreserve Technology, Llc. Compound optical proxy for sensing and pointing of light sources
US9910156B2 (en) 2012-06-30 2018-03-06 Solarreserve Technology, Llc Using optical proxy light to aim redirected light at a target using heliostats
DE102014019588A1 (de) * 2014-12-30 2016-06-30 erfis GmbH CSP Tracking
DE102015215793A1 (de) * 2015-08-19 2017-02-23 Deutsches Zentrum für Luft- und Raumfahrt e.V. Messvorrichtung zum Messen der Strahlungsdichte eines Sonnenofens sowie Messverfahren
WO2017064339A1 (fr) * 2015-10-16 2017-04-20 Abengoa Solar New Technologies Étalonnage d'héliostats d'une centrale d'énergie solaire thermoélectrique
US11262103B1 (en) * 2018-06-29 2022-03-01 Heliogen, Inc. Heliostat localization in camera field-of-view with induced motion
US11017561B1 (en) * 2018-10-09 2021-05-25 Heliogen, Inc. Heliostat tracking based on circumsolar radiance maps
CN110136206B (zh) * 2019-05-08 2021-05-07 浙江中控太阳能技术有限公司 一种塔式太阳能定日镜校正相机的视轴中心标定方法
US11732928B1 (en) 2019-09-09 2023-08-22 Heliogen Holdings, Inc. Gas receiver for capturing solar energy
CN112286234B (zh) * 2020-10-30 2023-08-29 浙江可胜技术股份有限公司 一种基于定日镜姿态编码解码的镜场校正系统及方法
EP4256250A1 (fr) * 2020-12-04 2023-10-11 FH Aachen Ensemble et procédé pour détecter un rayonnement

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340576A1 (fr) * 1976-02-09 1977-09-02 Anvar Systeme de guidage d'heliostats
IL114261A0 (en) * 1995-06-22 1995-10-31 Yeda Res & Dev System for control of heliostat field
DE19707461C2 (de) * 1997-02-25 1999-05-12 Deutsch Zentr Luft & Raumfahrt Meßvorrichtung zum Messen konzentrierter Lichtstrahlung
US6231197B1 (en) * 2000-03-20 2001-05-15 Mitaka Kohkico., Ltd. Heliostat for sunlight collecting system
US7667833B1 (en) * 2006-06-28 2010-02-23 Sandia Corporation Alignment method for parabolic trough solar concentrators
EP2212626A4 (fr) * 2007-10-24 2014-01-08 Esolar Inc Calibrage et commande de suivi d'héliostats dans une centrale solaire à récepteur à tour centrale
WO2010017415A2 (fr) * 2008-08-06 2010-02-11 Esolar, Inc. Étalonnage d’un héliostat à base de caméras au moyen de sources de lumière artificielle
US20100139644A1 (en) * 2008-10-29 2010-06-10 Brightsource Industries (Israel), Ltd. Heliostat calibration
US8344305B2 (en) * 2009-03-18 2013-01-01 Convery Mark R System and method for aligning heliostats of a solar power tower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117192A1 (fr) * 2014-02-06 2015-08-13 Commonwealth Scientific And Industrial Research Organisation Surveillance et mesure de multiples sources de lumière, notamment des héliostats
AU2015213474B2 (en) * 2014-02-06 2019-01-03 Commonwealth Scientific And Industrial Research Organisation Monitoring and measuring of multiple light sources especially heliostats

Also Published As

Publication number Publication date
WO2011066190A3 (fr) 2012-11-01
US20110120448A1 (en) 2011-05-26

Similar Documents

Publication Publication Date Title
US20110120448A1 (en) Heliostat control scheme using cameras
US20120174909A1 (en) Heliostat Control Scheme Using Cameras
EP2145137B1 (fr) Système pour diriger de rayons incidents
CN107678448B (zh) 一种基于天体图像的追日校正系统及其方法
US20110000478A1 (en) Camera-based heliostat tracking controller
US20130021471A1 (en) Reflective Surface Orientating with Multiple View Ports
US8801188B2 (en) Method for aligning the heliostats of a heliostat field
CN105022410B (zh) 一种塔式太阳能发电系统定日镜校准系统及校准方法
CN102116618B (zh) 定日镜姿态角的在线测量方法及系统
US9709771B2 (en) Light concentrator alignment system
CN201983486U (zh) 塔式太阳能热发电站的定日镜跟踪控制装置
WO2013044850A1 (fr) Système d'étalonnage et procédé d'étalonnage pour héliostat dans une centrale solaire
CN102495640A (zh) 太阳能发电站的定日镜校准方法及校准系统
CN109508043B (zh) 一种基于图像的定日镜二次反射指向校正现场系统及方法
CN109508044B (zh) 一种定日镜二次反射指向校正系统及方法
CN102854635B (zh) 一种太阳能碟式聚光系统的焦斑调节方法
WO2019060959A1 (fr) Procédé, système et appareil de collecte et de concentration d'énergie rayonnante provenant d'une source
CN205450422U (zh) 太阳能聚光镜片调焦系统
US9632167B2 (en) Solar tracker device and system
JP2009109443A (ja) 取付姿勢測定装置
CN112666985B (zh) 一种基于反射的定日镜运动误差参数校正系统及方法
CN105717606B (zh) 太阳能聚光镜片调焦系统和调焦方法
CN104679035A (zh) 一种定日镜自适应追日装置
CN103032974A (zh) 一种用于塔式系统定日镜反射面型调整校正装置及其校正方法
CN117968261A (zh) 定日镜辅助校准装置、方法及光热发电系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10784393

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10784393

Country of ref document: EP

Kind code of ref document: A2