147 results about "Heliostat" patented technology

The invention relates to the field of heliostat calibration, and discloses a scheduling method for calibrating heliostats through cooperation of artificial light sources and cameras in a large-scale heliostat field, and the method comprises the following steps: determining the heliostat range covered by each camera, determining the heliostat range covered by each artificial light source, and determining the heliostat range covered by each camera; the method comprises the following steps: determining the center and size of a light spot in an image shot by a camera when the heliostats are calibrated, determining the heliostats which can be calibrated in the coverage range of each artificial light source-camera combination, regarding each effective calibration combination as a node to construct an undirected graph, dividing the nodes into a plurality of groups through a graph grouping algorithm, and ensuring that the nodes in the same group are not connected with each other, therefore, all combinations in the same group can execute calibration in parallel. According to the method disclosed by the invention, the problem of affiliation misjudgment caused by light spot interference between heliostats is solved, possible shadow and shielding problems are avoided, dynamic scheduling of the artificial light source and the camera is realized, and invalid operation time is shortened.

The utility model relates to a bonding sheet of a high-precision heliostat reflecting surface supporting assembly, which comprises a bonding sheet main body, a clamping mechanism is arranged on the lower side of the bonding sheet main body, the clamping mechanism comprises a hollow inserting rod, a rotating shaft, a tooth column and four clamping blocks, the rotating shaft is rotatably arranged on one side of the inner wall of the rotating shaft, and the tooth column is arranged on the other side of the rotating shaft. The tooth column is fixedly installed at one end of the rotating shaft, four clamping grooves are formed in the circumferential side of the hollow inserting rod, the clamping blocks are installed in the clamping grooves in a sliding mode, and a tooth plate is fixedly installed on one side of each clamping block and engaged with the tooth column. By means of the clamping mechanism, when the bonding sheet is installed on the supporting assembly, a worker can conveniently and rapidly install the bonding sheet on the supporting assembly, the subsequent worker can conveniently disassemble the bonding sheet, and therefore the using convenience of the bonding sheet is improved.

The invention provides an error compensation method for a heat absorption screen of a tower type photo-thermal power station and an automatic operation system for the tower type photo-thermal power station. The method is applied to a control system of a tower-type photo-thermal power station, and comprises the following steps: dividing an annual time interval to obtain a plurality of characteristic time periods; according to corresponding target point positions configured by a control system, compensation parameters used for adjusting the target point positions in the different characteristic time periods are generated, and the compensation parameters are stored in the control system; in the preheating stage of the tower type photo-thermal power station, the compensation parameter of the corresponding target point is read according to the characteristic time period to which the current date belongs; and sending the compensation parameters to a control system of the tower-type photo-thermal power station, adjusting the target point positions of the heat absorption areas through the control system, and sending the target point positions to corresponding heliostat controllers so as to carry out attitude adjustment compensation on the heliostats. According to the technical scheme, the preheating efficiency can be improved.

The invention relates to the technical field of energy storage and new energy power generation, and discloses a tower-type photo-thermal system aiming method and device.The method comprises the steps that a relative coordinate system of the position of a heat absorber, the position of a heliostat and the position of the sun is established; calculating an independent light spot of reflection light corresponding to each heliostat based on the position of the heat absorber, and marking the light spot of which the drop point is the heat absorber as an incident light spot; overlapping all the incident light spots to obtain an initial combined light spot; the initial combined spot is adjusted based on a heat absorber acceptable spot upper limit. The invention provides a light spot simulation, aiming strategy determination and combined light spot detection and correction method and an aiming point determination method of a photo-thermal power station, realizes a heliostat light spot offset and aiming center correction method aiming at a concentrating photovoltaic part, improves the energy utilization rate, and improves the energy utilization rate. And a hardware arrangement strategy provided by the invention can effectively ensure the safety of the heat absorber.

1. Name of the design product: heliostat. 2. Use of the design product: heliostat is an optical device that can automatically track the sun and reflect sunlight to a fixed target. 3. Design points of the design product: in the combination of shape and pattern. 4. Picture or photo that best indicates the design points: perspective view.

A solar heliostat with pneumatic flow guide load shedding and friction damping vibration attenuation functions comprises a main beam, a plurality of auxiliary beams perpendicularly fixed to the main beam, a connecting piece fixed to the main beam, a plurality of inclined struts connecting the connecting piece and the auxiliary beams and the like. The supporting rod is fixed to the main beam, the friction damper is installed at the tail end of the supporting rod, the steel cables are connected with the friction damper, the main beam and the auxiliary beam respectively, and the triangular-prism-shaped covering body wraps the inclined struts in an attached mode. The friction damper comprises a friction base body, a friction element connected with a steel cable, a pressing plate matched with a friction concave surface of the friction base body to clamp the friction element, a pressure adjusting structure A for adjusting the pressing force of the pressing plate, a guide roller for guiding the steel cable connected with the friction element, and a pressure adjusting structure B for adjusting the tension force of the connected steel cable, according to the invention, airflow separation is guided to reduce the wind load through the prism aerodynamic configuration on the back of the heliostat; the friction force of each friction element and the pre-tightening force of the connected steel cable are independently set, the outer rigidity of the heliostat surface is enhanced, wind disturbance vibration is reduced, and the service optical precision is improved.

Methods and systems for separating a first metal and an impurity from a metal-containing feed stream are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a metal-containing feed stream in a heating zone to a first temperature to produce a first vapor including the first metal. The first vapor can be condensed in a condensation zone to produce a first liquid including the first metal, and the first liquid can be collected. The system can include a separation unit include a heating zone in fluid communication with a condensation zone and a means for applying solar energy to heat a metal-containing feed stream disposed in the heating zone.

The invention relates to the field of tower-type solar power generation, and discloses a tower-type photo-thermal mirror field shadow shielding efficiency rapid calculation method, which comprises the following steps: dividing a mirror field into a plurality of square grids according to coordinate data of heliostats, and determining the grid to which each heliostat belongs; for each heliostat, determining a neighbor heliostat of the heliostat; re-dividing the heliostat field into a plurality of square grids, and randomly selecting a heliostat from each grid as a typical heliostat; for each typical heliostat, calculating the shadow shielding proportion generated by the neighbor heliostat, and taking the shadow shielding proportion of the typical heliostat as the shadow shielding proportion of the grid where the typical heliostat is located; and the shadow shielding proportions of all typical heliostats are calculated, so that the shadow shielding efficiency of the whole heliostat field is calculated. According to the method disclosed by the invention, the calculation speed of the shadow shielding efficiency is improved while the calculation precision is ensured, and the balance point of the calculation precision and the calculation speed can be adjusted through different values of the parameters.

The invention relates to a device for reflecting daylight in a fixed direction chosen by the user, despite the sun's movement. The device is distinguished by its ability to be placed in any position and requires no calibration by the user. It positions itself in the Earth's frame of reference using an accelerometer coupled to a solar sighting system, which allows it to determine its position in the Earth's frame of reference and orient the mirror to maintain a constant direction of the reflected beam. The beam is unaffected by any cast shadows, and the system's accuracy is increased compared to compass-based devices. (Shorthand figure: Figure 1)

The utility model provides a heliostat mirror frame, include: main girder, set up first support layer on main girder, the second support layer who is configured for bearing sub mirror, second support layer includes a plurality of second support frame interval setting on first support layer, and at least two second support frames form a sub mirror mounting area for bearing sub mirror, at least part second support frame's length is different, and / or, at least part second support frame's extension direction is different to form different sub mirror mounting area. The utility model provides technical scheme to design to a plurality of second support frame length and extension direction, make a plurality of sub mirror mounting area formed by a plurality of second support frame have at least part difference, and then make a plurality of sub mirror mounting area can be according to actual demand and splice the heliostat of different contour and install splice out different shape contour, be favorable to according to actual environment and other factors more accurately design and control the focusing effect of heliostat, improve photo-thermal conversion efficiency.

The application belongs to the technical field of photo-thermal power generation, and particularly discloses a kind of heliostat control system image acquisition module online calibration method, including mirror surface posture measuring equipment and computing device;The computing device obtains data from the mirror surface posture measuring equipment and the image acquisition module by wireless or wired mode.The mirror surface posture measuring equipment is used to measure the three-dimensional coordinates, latitude and longitude and altitude information of heliostat mirror surface angle point;The computing device is used for mirror surface posture resolving, controls the image acquisition module to collect image, saves image, identifies the sun image center image coordinate, image acquisition module posture resolving, heliostat mirror surface and image acquisition module angle deviation amount resolving.The application is based on heliostat posture and sun track information resolving heliostat control system image acquisition module actual posture, realizes a kind of high efficiency, high precision heliostat control system image acquisition module online calibration.

The invention discloses an energy-saving electric push rod for solar photo-thermal power generation, which comprises a push rod main assembly, an automatic lubricating assembly and an automatic cooling assembly, and is characterized in that the push rod main assembly is composed of a driving motor, a multi-stage gear set, a transmission case, a ball screw, a screw nut, a connecting rod and a sleeve; the multi-stage gear set is used for completing heliostat tracking driving in a solar photo-thermal power generation system and is rotationally connected between the inner walls of the transmission case. Through the linkage design of the oil pumping mechanism and the pushing mechanism, the piston rod is driven by the reciprocating motion of the lead screw nut to automatically supplement lubricating oil to the elastic liquid storage bag, when the pressure in the liquid storage bag reaches a preset value, the pressure valve is automatically opened, oil is synchronously and accurately supplied to the ball screw and the multi-stage gear set through the double lubricating pipelines, and the working efficiency is improved. And external power driving is not needed, and a self-lubricating mode of supplying while running is achieved.

This utility model discloses a heliostat surface shape inspection device, relating to the field of solar thermal power generation technology. The device includes a support assembly, a moving guide rail, a first inspection assembly, and a second inspection assembly. The moving guide rail connects to the support assembly, and the first and second inspection assemblies are movably mounted on the guide rail. By placing the heliostat within the support assembly, the first and second inspection assemblies respectively inspect the surface shape of the heliostat. During the inspection process, the first inspection assembly performs a comprehensive surface shape inspection of the heliostat, quickly determining whether there are any problems with the surface shape, such as issues in a specific area. Simultaneously, the surface shape of the heliostat affects the size and shape of the light spot. After adjustments to the sub-mirrors, the second inspection assembly can immediately and quickly inspect specific areas of the sub-mirrors to verify whether the light spot has been improved.

This application provides a heliostat intelligent correction control method based on four-quadrant meteorological monitoring and an intelligent correction control system for a tower solar thermal power plant. The method includes: collecting real-time DNI values ​​from meteorological stations in the southeast, southwest, northwest, and northeast quadrants of the tower solar thermal power plant's mirror field, as well as the time-series operating parameters of the heliostat, to obtain real-time monitoring data; determining the operating status of each quadrant based on the real-time monitoring data, including real-time DNI values, DNI change slopes, and fluctuation amplitudes, whereby the operating status includes normal or abnormal; and executing a preset correction strategy based on the operating status of each quadrant. The technical solution of this application provides a heliostat correction method that simultaneously addresses systematic deviation correction and suppresses random meteorological interference, thereby improving the accuracy of angle prediction and tracking stability under complex weather conditions.

The application discloses a kind of maintenance-free heliostat double push rod driving devices, including support seat, stand, first push rod module and second push rod module;Support seat is set in the top of stand, and is rotationally connected with stand;First push rod module is rotationally connected with support seat, and is connected with the heliostat module on support seat, for driving heliostat module rotation;Second push rod module is fixedly set on support seat, for driving support seat rotation when heliostat module rotates to preset position, so that the mirror surface of heliostat module is downward.The pitch angle of the heliostat module in the maintenance-free heliostat double push rod driving device of the application is between 0° and 180°, so that the mirror surface can be downward in non-working state, to avoid the deposition of dust, sand and the like, to ensure the mirror surface reflection efficiency, while reducing the cleaning frequency and cleaning difficulty, and the structure is simple, easy to mass production.

The invention relates to the technical field of solar photo-thermal power generation, in particular to a frosting-inhibiting heliostat night posture regulation and control system and method. The system comprises a power station meteorological station group used for collecting temperature, humidity, wind speed and wind direction meteorological data used for calculating the frosting amount in real time; the mirror surface parameter collector group is used for collecting temperature and emissivity data of the surface or frost layer of the heliostat in real time; the weather forecast database is used for outputting solar radiation intensity, temperature, wind speed and wind direction data for predicting the defrosting period of the second day; the data processor is used for collecting meteorological data and heliostat surface or frost layer temperature and emissivity data, and carrying out data analysis processing, comparison and discrimination; and the central control system is used for receiving data analysis processing, comparison and discrimination results of the data processor. Through real-time sensing of the multi-source environment parameters and the mirror surface parameters, the system can judge whether the heliostat is frosted or not, the frosting amount and the defrosting time are predicted, and then the night posture of the heliostat is regulated and controlled.

The utility model discloses a tower type photo-thermal power station heliostat cleaning system which comprises a walking track, a walking mechanism and a cleaning mechanism, the walking track is fixedly installed on the ground of a tower type photo-thermal power station through a guide rail support, the walking mechanism is hung on a guide rail of the walking track through walking wheels, and the cleaning mechanism is placed in the walking mechanism. The walking mechanism can walk to the heliostat needing to be cleaned along the walking track, after the heliostat is adjusted to be in a proper state, the cleaning mechanism moves to the heliostat from the walking mechanism, accumulated dust on the heliostat is removed in the modes of air injection, water sprinkling, wiping, scraping and the like, the reflectivity of the heliostat is improved, the photo-thermal conversion efficiency of a condensation system is guaranteed, and the service life of the heliostat is prolonged. The heliostat cleaning system is a key technology for realizing automatic cleaning of the tower type photo-thermal power station.

The utility model discloses a heliostat connecting device which comprises a mounting frame, a quick connecting mechanism is arranged on the mounting frame, the quick connecting mechanism comprises fixing plates, a supporting frame, a heliostat body, an inserting rod, a fixing sleeve, a clamping groove, a clamping block, a connecting block, a contraction spring, a rotating sleeve, a pressing plate and a quick detaching mechanism, the fixing plates are arranged on the two sides of the mounting frame, and the supporting frame is fixed to the top ends of the fixing plates. The heliostat body is fixed to the supporting frame, the inserting rod is inserted into the fixing plate and the mounting frame, the quick connecting mechanism remarkably improves the mounting efficiency of the heliostat body through an optimized connecting mode, and particularly, the fixing sleeve and the inserting rod are in accurate butt joint through matching of the positioning groove and the positioning strip, so that the heliostat body can be quickly and stably mounted on the mounting frame, and the mounting efficiency of the heliostat body is improved. And through the pulling effect of the contraction spring, the connection firmness is further enhanced through clamping of the clamping block and the clamping groove, and the phenomenon of deviation or infirmness possibly caused by manual operation in a traditional installation mode is avoided.

The application discloses a heliostat azimuth angle driving device for a tower type solar thermal power station and relates to the technical field of solar power generation. The heliostat azimuth angle driving device comprises a base, a supporting column electrically connected to the base, a spray head symmetrically arranged at one end of the base, a first motor arranged on the outer wall of the supporting column, a steering gear rotatably arranged at the top of the supporting column and rotatably connected to the output end of the first motor through a belt, a rotation angle driving structure sleeved on the steering gear and used for driving the rotation angle of the heliostat to track light, a shaft rotatably connected to the end of the rotation angle driving structure, a mirror surface overturning structure arranged on the end surface of the shaft, and a vibration cleaning structure sleeved on the shaft and used for cleaning the mirror surface of the heliostat. A connecting frame is sleeved on the steering gear. Through the application, the common heliostat mirror surface cleaning mode is mostly external spray cleaning. Due to the large workload and high difficulty of mirror surface cleaning, the cost of manual cleaning accounts for more than 30% of the operation and maintenance cost of the power station, which brings a heavy economic burden to the operation of the power station.

The application belongs to the technical field of heliostat measurement, and particularly relates to a method for measuring pointing error of heliostat by using moonlight and a camera, comprising the following steps: rotating the heliostat, guiding the moonlight reflected by the heliostat to the camera; detecting the actual rotation angle of the heliostat when the center of the reflected light beam is located at the position of the camera; at the same time, calculating the theoretical rotation angle of the heliostat at the position based on the heliostat coordinates, the camera coordinates and the moonlight azimuth vector; the difference between the actual rotation angle and the theoretical rotation angle is the pointing error of the heliostat at the current position. The method has the advantages that the moon azimuth changes naturally with time, theoretically, infinite measurement azimuths can be provided, and an unmanned aerial vehicle or an additional calibration tower is not needed, so that the system cost is significantly reduced.

The invention discloses a system for exploiting thickened oil through cooperation of solar energy and industrial flue gas and a working method of the system, and belongs to the technical field of thickened oil exploitation auxiliary systems.In the system, a heliostat is used for reflecting and gathering sunlight to a heat absorber; the low-temperature storage tank is used for storing and transmitting cold thermochemical particles; the heat absorber communicates with the high-temperature storage tank; the fluidized bed heat exchanger is sequentially connected with a centrifugal high-pressure steam compressor and a high-pressure static mixer; the input end of the flue gas adsorption device is used for introducing industrial flue gas, the output end of the flue gas adsorption device is communicated with the flue gas analysis device, the carbon dioxide output end of the flue gas analysis device is communicated with the high-pressure static mixer, and the unutilized gas output end of the flue gas adsorption device is communicated to a supplementary gas source inlet of the fluidized bed heat exchanger; the high-pressure static mixer is used for collecting and mixing input media and outputting an efficient oil displacement system for oil and gas field thickened oil recovery. According to the invention, fossil energy consumption and carbon emission are reduced, the continuity of steam supply is ensured, the oil displacement effect is improved, and the reliability is realized.

The utility model relates to a heliostat mirror field cleaning equipment field, especially a mechanical arm device for cleaning heliostat mirror surface, including turntable stand, main arm outer arm, hinged pivot and main arm amplitude cylinder, the main arm outer arm is rotatively connected on the turntable stand through the hinged pivot, and the main arm amplitude cylinder is used for driving the main arm outer arm to do the pitch rotation around the hinged pivot, still including arm support anti -fall mechanism, the utility model discloses through setting arm support anti -fall mechanism, the speed -up transmission structure of engaging of cooperation gear wheel, can under the hydraulic system failure scene of main arm amplitude cylinder pressure loss, pipeline burst etc., enlarge the low -speed rotation of arm support falling as high -speed rotation, and fast trigger centrifugal locking action, the protection covers arm support arbitrary pitch angle, trigger response fast, locking stroke is short, can effectively curb arm support falling impact, avoid high -value heliostat mirror surface and cleaning equipment damage, and the safety redundancy of mirror field cleaning operation is greatly improved.

A heliostat includes a reflecting surface: an elastically deformable frame on which the reflecting surface is mounted: a truss structure behind the elastically deformable frame that includes at least four bracing struts with first ends attached to the elastically deformable frame and second ends attached to at least one node located centrally behind the frame: at least one actuator connected to at least one of the at least four struts at the at least one node: an electronic control system configured to communicate with the least one actuator; and a dual-axis mount to support and orient the above assembly. The actuation of the at least one actuator in response to the electronic control system causes compression or tension of at least one of the at least four bracing struts to thereby control a shape of the reflecting surface and the elastically deformable frame in at least low order bending modes.

The application belongs to the technical field of heliostat calibration, and particularly relates to a tower type optical thermal mirror field multi-tower cooperative heliostat calibration scheduling method, the core of which is to model the selection problem of each batch of heliostats to be calibrated as a bipartite graph maximum flow problem with capacity constraints, and iteratively solve it, so that the number of heliostats calibrated simultaneously in each batch is maximized, thereby globally minimizing the total batch number and accelerating the heliostat calibration efficiency.

The supporting mechanism for heliostat transportation comprises a base table, a middle connecting part installed on the base table and at least two self-locking clamping parts, and the self-locking clamping parts are arranged on the two sides of the middle connecting part in the horizontal direction. The self-locking clamping part comprises a base, a bearing block connected with the base, an elastic piece arranged between the bearing block and the base and clamping jaws with one ends connected with the bearing block, the bearing block can ascend and descend relative to the base in the vertical direction, the two ends of the elastic piece abut against the bearing block and the base respectively, and the clamping jaws are arranged in pairs. And the clamping jaw can be tightened in the descending process of the bearing block. The invention further provides a heliostat transport vehicle. The middle connecting part is connected with the flange connecting part of the heliostat, the self-locking clamping parts on the two sides can drive the clamping jaws on the two sides to be tightened in the downward pressing process of the heliostat so as to lock the main beam in an embracing mode, a multi-point supporting mode is adopted, the overall stability is guaranteed, and the influence on the condensation performance of the heliostat in the transportation process is reduced or avoided.

The invention discloses a reactor inlet optical power density measurement method and system. Firstly, a heat flow meter is fixed to the inner surface of a reactor cover plate through a heat insulation support, a heliostat field is controlled to form light spots at the reactor inlet, the cover plate is driven to execute reciprocating motion of closing and then opening, and the heat flow meter is driven to penetrate through a light spot area to complete one-dimensional scanning; synchronously acquiring a heat flow meter reading signal and recording a motion video through an image recording unit; the physical position of the heat flow meter on an inlet plane is identified based on a video and a pre-established coordinate mapping relation, position information and readings are associated to obtain a discrete energy flow density measurement value, two-dimensional energy flow density distribution is reconstructed through a spatial interpolation algorithm, integration is carried out on a distribution diagram on an inlet area to calculate total incident light power, and the total incident light power is calculated. The conventional opening and closing action of a cover plate of the reactor is used as a scanning driving mechanism, and the point-to-surface energy flux density full-field reconstruction is realized by combining the mobile measurement of a single-point sensor with a visual positioning technology.

The application discloses an automatic cleaning device, a heliostat and a mirror frame thereof, a heliostat field and a power generation system. The cleaning device comprises a track assembly and a cleaning assembly. The track assembly comprises a guide rail and a gravity-driven body movably arranged. The guide rail is provided with a first position and a second position at both ends and can generate an inclination angle change. The cleaning assembly is connected with the gravity-driven body. The heliostat mirror frame comprises a mirror surface, a mirror frame supporting the mirror surface and the automatic cleaning device. The track assembly is installed on the mirror frame. The guide rail extends along the long side of the mirror surface. The cleaning assembly extends along the short side of the mirror surface. The guide rail can generate an inclination angle change along with the tracking movement of the mirror frame. The gravity-driven body is switched and moved between the first position and the second position by relying on gravity, thereby driving the cleaning assembly to move along the mirror surface to perform automatic cleaning. The automatic cleaning device does not need external energy and manual operation, has low operation and maintenance cost, can automatically clean along with the light tracking action, has strong timeliness, and does not interfere with the normal light tracking operation of the heliostat.

The invention belongs to the technical field of solar photo-thermal power station maintenance equipment, and discloses a multifunctional vehicle with heliostat cleaning and movable groove type photo-thermal heat collection functions, which comprises a vehicle body, a cleaning pad, a flexible mirror board, a first mechanical arm, first winding equipment, second winding equipment, a heat collection pipe, a second mechanical arm, a water tank and a spraying pipe, the cleaning pad is arranged on the first end face of the flexible mirror board, and the execution end of the first mechanical arm is hinged to the flexible mirror board. The first winding device is connected with the lower end of the second end face of the flexible mirror board through a first metal stranded wire, the second winding device is connected with the upper end of the second end face of the flexible mirror board through a second metal stranded wire, the heat collecting pipe is connected with the execution end of the second mechanical arm, and one end of the spraying pipe is fixedly connected with the second metal stranded wire. The other end of the spraying pipe is connected with the water tank. The multifunctional vehicle not only can clean the heliostat, but also can convert the heliostat into the groove type photo-thermal collector to collect heat, and energy waste in the cleaning process is avoided.

The application discloses a heliostat direction correction method and system for photo-thermal power generation, and relates to the technical field of data processing. The method comprises the following steps: acquiring a heliostat array of a target area, and acquiring layout information of the heliostat array; obtaining a plurality of target area grids; respectively calling a plurality of historical correction data of the plurality of target area grids, performing volume division on the plurality of target area grids, and obtaining a first area grid set and a second area grid set; respectively performing image acquisition on the heliostat array of the first area grid set and the second area grid set through an image acquisition device, and obtaining a first image set and a second image set; inputting into a direction correction model, and outputting a first correction parameter set and a second correction parameter set; and performing direction correction on the heliostat array. The application solves the technical problem that the existing heliostat direction correction has low intelligent degree and poor accuracy, and achieves the technical effect of improving correction accuracy.

This application belongs to the field of heliostat technology, specifically relating to a multi-tower collaborative method for testing the reflectivity of a tower-type photothermal heliostat. By controlling the heliostat to accurately align the reflected light from the light source with a camera, and utilizing the light spot intensity information collected by the camera, combined with an established physical optical model, in-situ, non-contact testing of the mirror reflectivity is achieved. The core of the multi-tower collaborative testing method lies in modeling the selection problem of each batch of heliostats as a bipartite graph maximum flow problem with capacity constraints, and iteratively solving it to maximize the number of heliostats tested simultaneously in each batch. This allows for the simultaneous testing of dozens or even hundreds of heliostats, greatly improving testing efficiency. Furthermore, by using light spot intensity and the physical optical model, reflectivity can be tested more accurately, reducing errors.