Detection Device and Detection Method for Splicing Angle of Reflective Sub-Mirrors of a Trough-Type Concentrator

Abstract

The present application discloses a detection system and a detection method for the splicing angle of the reflecting sub-mirrors of a trough concentrator, which relates to the technical field of mirror surface detection. The detection system uses a support and adjustment device to support and adjust each reflecting sub-mirror of the trough concentrator, and each reflecting sub-mirror has n support points; and a laser group in the image acquisition device is used to simulate parallel solar rays incident on the reflecting sub-mirror, and the lasers in the laser group correspond to the support points one by one. Then, the camera in the image acquisition device is used to collect the spot image formed by the light reflected by the reflecting sub-mirror on the ground glass located at the ideal focal line of the trough concentrator; furthermore, based on the spot image, the height of the support points of the reflecting sub-mirror is adjusted until the spots formed by the light reflected by each support point of the same reflecting sub-mirror coincide on the ground glass, so as to complete the detection and guidance of the installation and adjustment of the splicing angle of each reflecting sub-mirror of the trough concentrator. The detection speed is fast, the accuracy is high, and the system calibration and image processing are simple and easy to operate.

Description

Technical Field

[0001] The present application relates to the technical field of mirror surface detection, and particularly to a detection device and a detection method for the splicing angle of reflecting sub - mirrors of a trough - type concentrator. Background Art

[0002] Compared with other forms of energy, solar energy has the characteristics of rich resources, wide distribution, easy access, broad utilization prospects, and clean and pollution - free. Undoubtedly, actively expanding the utilization of solar energy plays an important practical role in providing electricity, creating employment opportunities, and promoting the development of the clean - energy economy, and has important strategic significance for ensuring national energy security, optimizing the energy structure, and improving the atmospheric environment. Solar energy will surely play an important role in the transformation of the world's energy structure and become an ideal alternative energy source.

[0003] A solar concentrator is a key component of a thermal power station, and its cost accounts for more than 40% of the total cost of the power station. It is an energy - gathering device that concentrates solar radiation onto an absorber, playing the role of highly concentrating solar radiant energy. A solar concentrator is generally a large - scale glass mirror. For ease of processing and manufacturing, a splicing - type concentrator structure is generally adopted. Among them, a trough - type concentrator reflects and focuses sunlight onto a focal line through a large - area trough - shaped parabolic mirror. On this focal line, a heat - collecting tube or a receiver is usually placed to absorb the concentrated solar radiant energy and convert it into heat energy.

[0004] The large - area trough - shaped parabolic mirror of a trough - type concentrator is composed of several small reflecting sub - mirrors spliced together. During the splicing process, it is necessary to detect and adjust the splicing angles of each small reflecting sub - mirror to ensure that the trough - type concentrator reflects and focuses sunlight onto a focal line. How to quickly and accurately detect and adjust the splicing angles of the reflecting sub - mirrors of a trough - type concentrator is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] To solve the above - mentioned technical problems, the embodiments of the present application provide a detection system and a detection method for the splicing angle of reflecting sub - mirrors of a trough - type concentrator to achieve rapid detection of the splicing angle of reflecting sub - mirrors of a trough - type concentrator and guide the splicing and adjustment of each reflecting sub - mirror of the trough - type concentrator.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solutions:

[0007] A detection system for the splicing angle of reflecting sub - mirrors of a trough - type concentrator, wherein the trough - type concentrator is formed by splicing a plurality of reflecting sub - mirrors arranged in an array along a first direction and a second direction, the first direction and the second direction are perpendicular, and the detection system for the splicing angle of reflecting sub - mirrors of the trough - type concentrator includes:

[0008] A support and adjustment device for supporting and adjusting each of the reflecting sub-mirrors of the trough concentrator. There are n support points corresponding to each reflecting sub-mirror, and the height of the corresponding position of the reflecting sub-mirror can be adjusted at each support point, where n≥2 and n is an integer;

[0009] An image acquisition device, comprising a laser group, a ground glass, and a camera; the ground glass is located on the ideal focal line of the trough concentrator; the laser group includes n lasers. When the laser group is placed above one of the reflecting sub-mirrors, the light rays emitted by each of the lasers in the laser group are projected onto the reflecting sub-mirror along the third direction. After being reflected by the reflecting sub-mirror, a spot image is formed on the ground glass. The projection points of the light rays emitted by each of the lasers in the laser group on the reflecting sub-mirror correspond one by one to the support points of the reflecting sub-mirror. The third direction is perpendicular to the first direction and perpendicular to the second direction; the camera acquires the spot image;

[0010] An image processing device, comprising a processor. The processor receives the spot image acquired by the camera and, based on the spot image, determines whether the light rays emitted by each of the lasers in the laser group form spots on the ground glass after being reflected by the reflecting sub-mirror and whether the spots coincide. If not, it instructs to adjust the height of the support points of the reflecting sub-mirror until the light rays emitted by each of the lasers in the laser group form spots on the ground glass after being reflected by the reflecting sub-mirror and the spots coincide.

[0011] Optionally, the ideal focal line of the trough concentrator extends along the first direction. The detection system for the splicing angle of the reflecting sub-mirrors of the trough concentrator further includes a mechanical device, and the mechanical device includes:

[0012] A gantry group, including a first gantry and a second gantry with adjustable height;

[0013] A guide rail group, including a first guide rail located on the first gantry and a second guide rail located on the second gantry. The first guide rail and the second guide rail are parallel and at the same height along the first direction. The support and adjustment device and the trough concentrator are placed between the first guide rail and the second guide rail;

[0014] A cross beam frame, which spans across the first guide rail and the second guide rail along the second direction;

[0015] The image acquisition device includes multiple groups of the laser group, and the laser group is installed on the cross beam frame; when the cross beam frame is located above a row of the reflecting sub-mirrors arranged along the second direction in the trough concentrator, the laser group corresponds one by one to the reflecting sub-mirror; the ground glass and the camera are suspended on the cross beam frame.

[0016] Optionally, there is one cross beam frame, and the one cross beam frame is movable along the first direction on the first guide rail and the second guide rail.

[0017] Optionally, there are multiple cross beam frames, and the cross beam frames correspond one by one to the rows of reflecting sub - mirrors arranged along the second direction in the trough - type concentrator.

[0018] Optionally, each of the lasers is arranged along the first direction and the second direction;

[0019] The detection system for the splicing angle of the reflecting sub - mirrors of the trough - type concentrator further includes a debugging device for debugging the light emitted by multiple lasers arranged along the first direction to be transmitted along the third direction, and / or for debugging the light emitted by multiple lasers arranged along the second direction to be transmitted along the third direction.

[0020] Optionally, the debugging device includes:

[0021] An optical platform, when debugging the light emitted by multiple lasers arranged along the first direction or the second direction, the optical platform is placed below each of the lasers to be debugged, and the optical platform is perpendicular to the third direction;

[0022] Multiple semi - transparent and semi - reflective right - angled prisms, the semi - transparent and semi - reflective right - angled prisms are located on the optical platform, and the semi - transparent and semi - reflective right - angled prisms correspond one by one to the lasers to be debugged;

[0023] A convex lens and a light screen, the light emitted by each of the lasers arranged along the first direction or the second direction to be debugged is projected onto the inclined surface of the semi - transparent and semi - reflective right - angled prism, reflected by the inclined surface of the right - angled prism and then projected onto the convex lens, and then passes through the convex lens and hits the light screen, and the light screen is located at the focal point of the convex lens;

[0024] By debugging the postures of each of the lasers, the light emitted by each of the lasers is reflected by the inclined surface of the corresponding semi - transparent and semi - reflective right - angled prism and then converges at the same point on the light screen through the convex lens, so that the light emitted by the lasers to be debugged is transmitted along the third direction.

[0025] Optionally, the image acquisition device further includes:

[0026] A data line for transmitting the spot image collected by the camera to the processor.

[0027] Optionally, the image processing device further includes:

[0028] A display screen for displaying indication information for adjusting the support points of each of the reflecting sub - mirrors.

[0029] Optionally, the light rays emitted by each of the lasers have different colors, and the camera is a color camera.

[0030] A method for detecting the splicing angle of reflecting sub - mirrors of a trough - type concentrator, which is applied to the detection system for the splicing angle of reflecting sub - mirrors of the trough - type concentrator described in any one of the above. The trough - type concentrator is formed by splicing a plurality of reflecting sub - mirrors arranged in an array along a first direction and a second direction, the first direction and the second direction are perpendicular. The method for detecting the splicing angle of reflecting sub - mirrors of the trough - type concentrator includes:

[0031] Using the support and adjustment device to support each of the reflecting sub - mirrors of the trough - type concentrator. Each reflecting sub - mirror has n support points, and the height of the corresponding position of the reflecting sub - mirror can be adjusted at each support point, where n≥2 and n is an integer;

[0032] Placing the laser group of the image acquisition device above one of the reflecting sub - mirrors, and placing the ground glass of the image acquisition device on the ideal focal line of the trough - type concentrator. Using the light rays emitted by each of the lasers in the laser group to project along a third direction onto the reflecting sub - mirror, and after being reflected by the reflecting sub - mirror, forming a spot image on the ground glass. The third direction is perpendicular to the first direction and perpendicular to the second direction, and using the camera of the image acquisition device to collect the spot image;

[0033] Using the processor of the image processing device to receive the spot image collected by the camera, and based on the spot image, determining whether the light rays emitted by each of the lasers in the laser group form spots on the ground glass after being reflected by the reflecting sub - mirror, and whether the spots coincide. If not, indicating the support and adjustment device to adjust the height of the support points of the reflecting sub - mirror until the light rays emitted by each of the lasers in the laser group form spots on the ground glass after being reflected by the reflecting sub - mirror, and the spots coincide.

[0034] Compared with the prior art, the above - mentioned technical solution has the following advantages:

[0035] The detection system for the splicing angle of the reflecting sub - mirrors of a trough - type concentrator provided by the embodiments of the present application takes into account that the trough - type concentrator is formed by splicing multiple reflecting sub - mirrors arranged in an array along mutually perpendicular first and second directions. A support and adjustment device is used to support and adjust each reflecting sub - mirror of the trough - type concentrator. It has n support points corresponding to each reflecting sub - mirror, and the height of the corresponding position of the reflecting sub - mirror can be adjusted at each support point. An image acquisition device is used to simulate the situation of parallel sunlight incident on the reflecting sub - mirror. Specifically, when the laser group in the image acquisition device is placed above a reflecting sub - mirror, the light rays emitted by each laser in the laser group are projected onto the reflecting sub - mirror along the third direction. After being reflected by the reflecting sub - mirror, a spot image is formed on the ground glass located on the ideal focal line of the trough - type concentrator. The third direction is perpendicular to the first direction and perpendicular to the second direction. Furthermore, the camera in the image acquisition device captures the spot image on the ground glass and transmits it to the processor of the image processing device. Based on the received spot image, the processor determines whether the light rays emitted by each laser in the laser group form spots on the ground glass after being reflected by the reflecting sub - mirror and whether the spots coincide. If not, since the projection points of the light rays emitted by each laser in the laser group on the reflecting sub - mirror correspond one - to - one with the support points of the reflecting sub - mirror, it indicates adjusting the height of the support points of the reflecting sub - mirror until the light rays emitted by each laser in the laser group form spots on the ground glass after being reflected by the reflecting sub - mirror and the spots coincide, indicating that the focus of this reflecting sub - mirror is located on the ideal focal line of the trough - type concentrator. By analogy, the detection of the splicing angles of all reflecting sub - mirrors of the trough - type concentrator and the guidance of installation and adjustment can be completed. It not only has a fast detection speed and high detection accuracy, but also has simple system calibration and image processing and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0037] Figure 1 It is a schematic structural diagram of a detection system for the splicing angle of the reflecting sub - mirrors of a trough - type concentrator provided by the embodiments of the present application;

[0038] Figure 2 It is a schematic principle diagram of the installation and adjustment of the reflecting sub - mirror by the detection system for the splicing angle of the reflecting sub - mirrors of the trough - type concentrator provided by the embodiments of the present application;

[0039] Figure 3 It is a schematic structural diagram of another detection system for the splicing angle of the reflecting sub - mirrors of a trough - type concentrator provided by the embodiments of the present application;

[0040] Figure 4 For Figure 1 and Figure 2 the schematic cross-sectional view of the detection system shown along the second direction Y;

[0041] Figure 5 In the detection system for the splicing angle of the reflecting sub-mirrors of the trough-shaped concentrator provided by the embodiment of the present application, it is a schematic diagram of the debugging device debugging the light emitted by the laser.

[0042] Reference numerals:

[0043] 10 - trough-shaped concentrator; 11 - reflecting sub-mirror; 20 - support and adjustment device; 21 - bracket; 22 - measurement platform; 30 - image acquisition device; 31 - laser group; 310 - laser; 32 - ground glass; 33 - camera; 331 - camera fixing rod; 34 - data line; 40 - image processing device; 41 - processor; 42 - display screen; 50 - mechanical device; 51 - gantry group; 511 - first gantry; 512 - second gantry; 52 - guide rail group; 521 - first guide rail; 522 - second guide rail; 53 - cross beam frame; 60 - debugging device; 61 - optical platform; 610 - adjustment knob; 62 - semi-transmissive and semi-reflective right-angle prism; 63 - convex lens; 64 - light screen; first direction - X; second direction - Y; third direction - Z. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0045] In the following description, many specific details are set forth in order to fully understand the present application, but the present application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0046] As described in the background art section, how to quickly and accurately detect and adjust the splicing angle of the reflecting sub-mirrors of the trough-shaped concentrator is a technical problem that those skilled in the art urgently need to solve.

[0047] The embodiment of the present application provides a detection system for the splicing angle of the reflecting sub-mirrors of the trough-shaped concentrator to achieve the rapid detection of the splicing angle of the reflecting sub-mirrors of the trough-shaped concentrator and guide the splicing and adjustment of each reflecting sub-mirror of the trough-shaped concentrator.

[0048] Figure 1The figure shows a schematic structural diagram of a detection system for the splicing angle of the reflecting sub-mirrors of a trough concentrator provided by an embodiment of the present application. As Figure 1 shown, the trough concentrator 10 is formed by splicing a plurality of reflecting sub-mirrors 11 arranged in an array along a first direction X and a second direction Y. The first direction X and the second direction Y are perpendicular. The detection system for the splicing angle of the reflecting sub-mirrors of the trough concentrator includes a support and adjustment device 20, an image acquisition device 30, and an image processing device 40.

[0049] As Figure 1 shown, the support and adjustment device 20 is used to support and adjust each reflecting sub-mirror 11 of the trough concentrator 10. It has n support points corresponding to each reflecting sub-mirror 11. The height of the corresponding position of the reflecting sub-mirror 11 can be adjusted at each support point, where n≥2 and n is an integer.

[0050] For example, n = 4. The support and adjustment device 20 has 4 support points corresponding to each reflecting sub-mirror 11. A knob can be set at each support point, and the height of the corresponding position of the reflecting sub-mirror 11 is adjusted by the twisting direction and the number of turns of the knob.

[0051] Optionally, as Figure 1 shown, the support and adjustment device 20 includes a bracket 21 and a measurement platform 22. Each reflecting sub-mirror 11 of the trough concentrator 10 is installed and fixed on the bracket 21. The bracket 21 has n support points corresponding to each reflecting sub-mirror 11. A knob for adjusting the height of the corresponding position of the reflecting sub-mirror 11 is provided at each support point. The bracket 21 is installed on the measurement platform 22.

[0052] As Figure 1 shown, the image acquisition device 30 includes a laser group 31, a ground glass 32, and a camera 33.

[0053] Among them, the ground glass 32 is located on the ideal focal line of the trough concentrator 10.

[0054] It can be understood that the trough concentrator 10 is formed by splicing a plurality of reflecting sub-mirrors 11 arranged in an array along the first direction X and the second direction Y into a large-area trough-shaped parabolic mirror. The large-area trough-shaped parabolic mirror reflects and focuses the vertically incident parallel solar rays onto a focal line, and this focal line is the ideal focal line of the trough concentrator 10. For example, the ideal focal line of the trough concentrator 10 extends along the first direction X. Usually, a heat collection tube or a receiver is placed on the ideal focal line of the trough concentrator 10 to absorb the focused solar radiation energy and convert it into heat energy. Since the detection system provided by the embodiment of the present application is used to detect the splicing angle of each reflecting sub-mirror 11 in the trough concentrator 10 and guide the splicing and adjustment of each reflecting sub-mirror 11 in the trough concentrator 10, the ground glass 32 is placed on the ideal focal line of the trough concentrator 10.

[0055] The laser group 31 includes n lasers 310. When the laser group 31 is placed above a reflecting mirror 11, the light rays emitted by each laser 310 in the laser group 31 are projected onto the reflecting mirror 11 along the third direction Z. After being reflected by the reflecting mirror 11, a spot image is formed on the ground glass 32. The projection points of the light rays emitted by each laser 310 in the laser group 31 on the reflecting mirror 11 correspond one-to-one to the support points of the reflecting mirror 11. The third direction Z is perpendicular to the first direction X and perpendicular to the second direction Y.

[0056] The camera 33 is used to collect the spot image on the ground glass 32.

[0057] It can be understood that the postures of the lasers 310 in the laser group 31 are pre-adjusted so that the light rays emitted by the lasers 310 in the laser group 31 are transmitted along the third direction Z and projected onto the reflecting mirror 11. That is, the light rays emitted by the lasers 310 in the laser group 31 are used to simulate the situation where the actual parallel sun rays are perpendicularly incident on the reflecting mirror 11.

[0058] It can also be understood that the purpose of detecting the splicing angles of the respective reflecting sub-mirrors 11 in the trough concentrator 10 and guiding the splicing and alignment of the respective reflecting sub-mirrors 11 in the trough concentrator 10 is to hope that the foci of the respective reflecting sub-mirrors 11 in the trough concentrator 10 are located on the ideal focal line of the trough concentrator 10. In this way, the trough concentrator 10 can reflect and focus the vertically incident parallel solar rays onto the heat collection tube or receiver located on the ideal focal line. Therefore, in the embodiments of the present application, when the laser group 31 is placed above a reflecting sub-mirror 11, it is set that the projection points of the light rays emitted by the respective lasers 310 in the laser group 31 on the reflecting sub-mirror 11 correspond one-to-one to the support points of the reflecting sub-mirror 11, so as to facilitate the light rays emitted by the respective lasers 310 in the laser group 31 to be projected onto the reflecting sub-mirror 11 along the third direction Z. After being reflected by the reflecting sub-mirror 11, a spot image is formed on the ground glass 32. Thus, according to the spot image, it can be determined whether the laser light rays corresponding to the support points of the reflecting sub-mirror that are vertically incident form spots on the ground glass after being reflected by the reflecting sub-mirror, and whether the spots formed on the ground glass by the laser light rays corresponding to the respective support points of the reflecting sub-mirror that are vertically incident coincide. If the laser light rays corresponding to the support points of the reflecting sub-mirror that are vertically incident do not form spots on the ground glass after being reflected by the reflecting sub-mirror, and / or the spots formed on the ground glass by the laser light rays corresponding to the respective support points of the reflecting sub-mirror that are vertically incident do not completely coincide, then the height of the corresponding position of the support point of the reflecting sub-mirror can be adjusted until the laser light rays corresponding to the support points of the reflecting sub-mirror that are vertically incident form spots on the ground glass after being reflected by the reflecting sub-mirror, and the spots formed on the ground glass by the laser light rays corresponding to the respective support points of the reflecting sub-mirror that are vertically incident coincide, indicating that the focus of the reflecting sub-mirror is located on the ideal focal line of the trough concentrator 10.

[0059] In the embodiments of the present application, when the laser group 31 is placed above a reflecting sub-mirror 11, it is set that the projection points of the light rays emitted by the respective lasers 310 in the laser group 31 on the reflecting sub-mirror 11 correspond one-to-one to the support points of the reflecting sub-mirror 11. In fact, that is, it is set that the respective lasers 310 in the laser group 31 correspond one-to-one to the support points of the reflecting sub-mirror 11, and the light rays emitted by the respective lasers 310 are transmitted along the third direction Z.

[0060] In the embodiments of the present application, the ground glass 32 can be semi-transmissive and semi-reflective, so as to facilitate the camera 33 to collect the spot image on the ground glass 32. At this time, the camera 33 can collect the spot image on the side of the ground glass 32 where the spot is formed, or can also collect the spot image on the side of the ground glass 32 away from the spot. Optionally, the ground glass 32 can also be only reflective. At this time, the camera 33 only needs to collect the spot image on the side of the ground glass 32 where the spot is formed.

[0061] The position, shape, and size of the ground glass 32 in this application are not limited. As long as the laser light corresponding to the support point of the reflection mirror that is vertically incident can form a light spot on the ground glass after being reflected by the reflection mirror, and the ground glass does not affect the laser light, it is acceptable.

[0062] The position of the camera 33 in this application is also not limited. As long as the camera 33 can collect the light spot image on the ground glass 32, it is acceptable.

[0063] As Figure 1 shown, the image processing device 40 includes a processor 41. The processor 41 receives the light spot image collected by the camera 33, and based on the light spot image, determines whether the light emitted by each laser 310 in the laser group 31 forms a light spot on the ground glass 32 after being reflected by the reflection mirror 11, and whether the light spots coincide. If not, it instructs to adjust the height of the support point of the reflection mirror 11 until the light emitted by each laser 310 in the laser group 31 forms a light spot on the ground glass 32 after being reflected by the reflection mirror 11, and the light spots coincide.

[0064] It can be understood that when the laser group 31 is placed above a reflection mirror 11, each laser 310 in the laser group 31 is set to correspond to the support point of the reflection mirror 11 one by one, and the light emitted by each laser 310 travels along the third direction Z, so that the projection points of the light emitted by each laser 310 in the laser group 31 on the reflection mirror 11 correspond to the support points of the reflection mirror 11 one by one. Thus, the light emitted by each laser 310 in the laser group 31 is projected onto the reflection mirror 11 along the third direction Z, forms a light spot image on the ground glass 32 after being reflected by the reflection mirror 11, simulates the parallel sunlight incident on the reflection mirror 11, collects the light spot image on the ground glass 32 through the camera 33, and transmits the light spot image to the processor 41, so that the processor 41 determines based on the light spot image whether the light emitted by each laser 310 in the laser group 31 forms a light spot on the ground glass 32 after being reflected by the reflection mirror 11, and whether the light spots formed by the light emitted by each laser 310 in the laser group 31 on the ground glass 32 after being reflected by the reflection mirror 11 coincide. If not, it instructs to adjust the height of the support point of the reflection mirror 11 until the light emitted by each laser 310 in the laser group 31 forms a light spot on the ground glass 32 after being reflected by the reflection mirror 11, and the light spots formed by the light emitted by each laser 310 in the laser group 31 on the ground glass 32 after being reflected by the reflection mirror 11 coincide, that is, the light spots reflected by the same reflection mirror 11 coincide on the ground glass 32, indicating that the focus of the reflection mirror 11 is located on the ideal focal line of the trough concentrator 10. By analogy, the quick detection and guidance of the splicing angle of each reflection mirror 11 of the trough concentrator 10 can be completed. It not only has a fast detection speed and high detection accuracy, but also has simple system calibration and image processing, and is easy to operate.

[0065] Figure 2 The schematic diagram shows the principle of the alignment of the reflecting sub-mirrors by the detection system for the splicing angle of the reflecting sub-mirrors provided by the embodiments of the present application. As Figure 2 shown, the laser beam emitted by the laser enters a support point of the trough concentrator 10 along the third direction Z. After being reflected by this support point, it is projected onto the ground glass 32 to form a light spot. If the splicing angle of this support point is appropriate, the normal line of this support point is the ideal normal line, and the light beam reflected by this support point is also the ideal light beam. The ideal light beam is focused on the ideal focal line of the trough concentrator 10. If the splicing angle of this support point is inappropriate, the normal line of this support point is the actual normal line, and the light beam reflected by this support point is the actual light beam. The light spot projected by the actual light beam on the ground glass 32 has a certain distance from the light spot projected by the ideal light beam on the ground glass 32. Based on the light spot image on the ground glass 32 collected by the camera 33, the processor 41 can calculate the deviation angle θ between the actual normal line and the ideal normal line of this support point, and then quantify the deviation angle θ into the height that this support point needs to be adjusted. By adjusting the height of this support point, the splicing angle of this support point is adjusted so that the actual normal line of this support point coincides with the ideal normal line, and the actual light beam coincides with the ideal light beam.

[0066] It should be noted that the present application does not limit the order of detecting the splicing angles and guiding the alignment of the respective reflecting sub-mirrors 11 in the trough concentrator 10. That is to say, the splicing angles of the respective reflecting sub-mirrors 11 in the trough concentrator 10 can be detected and the alignment can be guided one by one for each reflecting sub-mirror 11, and the order of each reflecting sub-mirror 11 is not limited. At this time, at least one set of laser groups 31 in the image acquisition device 30 is sufficient; it is also possible to detect and guide the alignment of the splicing angles of the rows of reflecting sub-mirrors 11 arranged along the second direction Y in the trough concentrator 10 one by one for each row of reflecting sub-mirrors 11, and the order of each row of reflecting sub-mirrors 11 is not limited; it is also possible to detect and guide the alignment of the splicing angles of the columns of reflecting sub-mirrors 11 arranged along the first direction X in the trough concentrator 10 one by one for each column of reflecting sub-mirrors 11, and the order of each column of reflecting sub-mirrors 11 is not limited; it is also possible to detect and guide the alignment of the splicing angles of some or all of the reflecting sub-mirrors 11 in the trough concentrator 10 simultaneously, depending on the specific situation.

[0067] Optionally, in some embodiments of the present application, the ideal focal line of the trough concentrator 10 extends along the first direction X. In order to improve the detection and alignment efficiency, as Figure 1 shown, the detection system for the splicing angle of the reflecting sub-mirrors of the trough concentrator provided by the embodiments of the present application further includes a mechanical device 50. The mechanical device 50 includes a gantry group 51, a guide rail group 52, and a cross beam frame 53.

[0068] Among them, the gantry group 51 includes a first gantry 511 and a second gantry 512 with adjustable heights.

[0069] The guide rail group 52 includes a first guide rail 521 located on the first gantry 511 and a second guide rail 522 located on the second gantry 512. The first guide rail 521 and the second guide rail 522 are arranged parallel and at the same height along the first direction X. A support and adjustment device 20 and a trough-shaped concentrator 10 are placed between the first guide rail 521 and the second guide rail 522.

[0070] Specifically, the first guide rail 521 and the second guide rail 522 can be adjusted to be parallel along the first direction X by a spirit level and the first gantry 511 and the second gantry 512 with adjustable height, and the first guide rail 521 and the second guide rail 522 are arranged at the same height.

[0071] The crossbeam frame 53 spans across the first guide rail 521 and the second guide rail 522 along the second direction Y.

[0072] In this embodiment, the image acquisition device 30 includes multiple laser groups 31, and the laser groups 31 are installed on the crossbeam frame 53; when the crossbeam frame 53 is located above a row of reflecting mirrors 11 arranged along the second direction Y in the trough-shaped concentrator 10, the laser groups 31 correspond to the reflecting mirrors 11 one by one; moreover, each laser 310 in each laser group 31 corresponds to each support point of the reflecting mirror 11 corresponding to this laser group 31 one by one.

[0073] For example, if a row of reflecting mirrors 11 arranged along the second direction Y in the trough-shaped concentrator 10 includes 4 reflecting mirrors, then 4 laser groups 31 are installed on the crossbeam frame 53. When the crossbeam frame 53 is located above a row of reflecting mirrors 11 arranged along the second direction Y in the trough-shaped concentrator 10, the laser groups 31 correspond to the reflecting mirrors 11 one by one, and moreover, each laser 310 in each laser group 31 corresponds to each support point of the reflecting mirror 11 corresponding to this laser group 31 one by one.

[0074] In this embodiment, the ground glass 32 and the camera 33 are suspended on the crossbeam frame 53. Among them, the camera 33 can be fixed to the crossbeam frame 53 by a camera fixing rod 331. The position and posture of the camera 33 can clearly capture a clear image of the light spot on the ground glass 32.

[0075] With the above settings, multiple laser groups 31, the ground glass 32 and the camera 33 installed on the crossbeam frame 53 form a set of image acquisition devices. This set of image acquisition devices can simultaneously detect and guide the assembly and adjustment of the splicing angles of a row of reflecting mirrors 11 arranged along the second direction Y in the trough-shaped concentrator 10. Compared with detecting and guiding the assembly and adjustment of the splicing angles of each reflecting mirror 11 in the trough-shaped concentrator 10 one by one, the detection and assembly and adjustment efficiency are greatly improved.

[0076] Based on the above embodiment, optionally, in some embodiments of the present application, such asFigure 1 As shown, there is one crossbeam frame 53, and this one crossbeam frame 53 is movable along the first direction X on the first guide rail 521 and the second guide rail 522. In this way, it is possible to detect the splicing angles of the respective reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10 and guide the alignment and adjustment.

[0077] Optionally, in some other embodiments of the present application, there are two or more crossbeam frames 53, such as Figure 3 As shown, in this way, it is possible to simultaneously detect the splicing angles of two or more rows of reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10 and guide the alignment and adjustment.

[0078] In the above two embodiments, one or more crossbeam frames 53 are movable along the first direction X on the first guide rail 521 and the second guide rail 522 to complete the detection of the splicing angles of the respective reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10 and guide the alignment and adjustment.

[0079] Optionally, in still some other embodiments of the present application, there are multiple crossbeam frames 53, and the crossbeam frames 53 correspond one by one to the respective rows of reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10.

[0080] It can be understood that the respective rows of reflecting sub-mirrors 11 in the trough-shaped concentrator 10 extend in the second direction Y and are arranged in the first direction X, and the respective reflecting sub-mirrors 11 in each row of reflecting sub-mirrors 11 are arranged in the second direction Y. In this embodiment, the crossbeam frames 53 correspond one by one to the respective rows of reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10. That is to say, one row of reflecting sub-mirrors 11 in the trough-shaped concentrator 10 corresponds to one crossbeam frame 53, and the number of crossbeam frames 53 corresponds to the number of rows of the respective rows of reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10.

[0081] The above setting can simultaneously detect the splicing angles of the respective rows of reflecting sub-mirrors 11 arranged in the second direction Y in the trough-shaped concentrator 10 and guide the alignment and adjustment, and the crossbeam frames 53 do not need to move, reducing the adjustment of the laser group 31 caused by the movement of the crossbeam frames 53.

[0082] However, as the number of crossbeam frames 53 increases, the number of laser groups 31 also doubles, and the cost of the detection system will inevitably increase relatively.

[0083] It should be noted that the present application does not limit the shape of the crossbeam frames 53, and it can be, for example, Figure 1 and Figure 3 the three-crossbeam frame shown, or it can be other shapes, depending on the specific situation.

[0084] Figure 4 shows Figure 1 andFigure 2 The schematic cross-sectional view of the detection system shown along the second direction Y. It can be seen that for a row of reflecting sub-mirrors 11 arranged along the second direction Y in the trough-shaped concentrator 10, the lasers 310 in each group of laser groups 31 installed on the corresponding crossbeam frame 53 can simultaneously project laser light rays transmitted along the third direction Z towards their corresponding reflecting sub-mirrors. After being reflected by their corresponding reflecting sub-mirrors, spot images are formed on the ground glass 32, and the spot images are then collected by the camera 33.

[0085] Optionally, in some embodiments of the present application, as Figure 4 shown, the laser light rays emitted by each laser 310 have different colors. At this time, the camera 33 is a color camera to facilitate the collection of spot images of different colors, so as to distinguish the spots formed by the reflection of different support points of the reflecting sub-mirror 11.

[0086] Optionally, in other embodiments of the present application, the laser light rays emitted by each laser 310 can also have the same color. At this time, the emission time of the laser of each laser 310 can be controlled differently, so as to distinguish the spots formed by the reflection of different support points of the reflecting sub-mirror 11.

[0087] Optionally, in some embodiments of the present application, as Figure 1 and Figure 3 shown, the image acquisition device 30 further includes a data line 34, and the data line 34 is used to transmit the spot image collected by the camera 33 to the processor 41 of the image processing device 40.

[0088] Optionally, in other embodiments of the present application, the camera 33 can also use a wireless transmission method such as Bluetooth to transmit the collected spot image to the processor 41 of the image processing device 40.

[0089] Optionally, in some embodiments of the present application, as Figure 1 and Figure 3 shown, the image processing device 40 further includes a display screen 42, and the display screen 42 is used to display the indication information for adjusting the support points of each reflecting sub-mirror 11. It can be understood that the indication information for adjusting the support points of each reflecting sub-mirror 11 can be the height that the support point needs to be adjusted, or the direction and number of turns that the knob corresponding to the support point needs to be twisted.

[0090] Optionally, in some embodiments of the present application, as Figure 1 and Figure 3As shown, the support points of each reflecting sub - mirror 11 in the trough - type concentrator 10 are arranged along the first direction X and the second direction Y. Correspondingly, each laser 310 is also arranged along the first direction X and the second direction Y. As known from the foregoing, it is necessary to pre - adjust the postures of the lasers 310 in the laser group 31 so that the light rays emitted by the lasers 310 in the laser group 31 are transmitted along the third direction Z and projected onto the reflecting sub - mirror 11. On this basis, as Figure 5 shown, the detection system for the splicing angle of the reflecting sub - mirror of the trough - type concentrator provided in the embodiment of the present application may further include a debugging device 60. The debugging device 60 is used to debug the light rays emitted by the multiple lasers 310 arranged along the first direction X to be transmitted along the third direction Z, and / or debug the light rays emitted by the multiple lasers 310 arranged along the second direction Y to be transmitted along the third direction Z. Thus, the debugging device 60 can debug the light rays emitted by each laser 310 to be transmitted along the third direction Z.

[0091] Optionally, in some embodiments of the present application, as Figure 5 shown, the debugging device 60 includes an optical platform 61, multiple semi - transparent and semi - reflective right - angled prisms 62, a convex lens 63, and a light screen 64.

[0092] As Figure 5 shown, when debugging the light rays emitted by the multiple lasers 310 arranged along the first direction X or the second direction Y, the optical platform 61 is placed below each laser 310 to be debugged, and the optical platform 61 is perpendicular to the third direction Z, that is, the optical platform 61 is parallel to the first direction X and parallel to the second direction Y. Specifically, adjustment knobs 610 may be provided on the optical platform 61, and the optical platform 61 is adjusted to be perpendicular to the third direction Z through the adjustment knobs 610.

[0093] As Figure 5 shown, the semi - transparent and semi - reflective right - angled prism 62 is located on the optical platform 61, and the semi - transparent and semi - reflective right - angled prism 62 corresponds to each laser 310 to be debugged; and, the inclined surface of the semi - transparent and semi - reflective right - angled prism 62 corresponds to the laser 310. Thus, the light rays emitted by each laser 310 arranged along the first direction X or the second direction Y to be debugged are projected onto the inclined surface of the semi - transparent and semi - reflective right - angled prism 62, reflected by the inclined surface of the semi - transparent and semi - reflective right - angled prism 62 and then projected onto the convex lens 63, and then pass through the convex lens 63 and hit the light screen 64, and the light screen 64 is located at the focal point of the convex lens 63.

[0094] Since the semi-transmissive semi-reflective right-angle prism 62 corresponds to each laser 310 to be debugged one by one, if each laser 310 to be debugged is arranged along the first direction X, then multiple semi-transmissive semi-reflective right-angle prisms 62 are also arranged along the first direction X. At this time, the convex lens 63 and the light screen 64 are located on one side of the multiple semi-transmissive semi-reflective right-angle prisms 62 along the first direction X, so that the light emitted by each laser 310 to be debugged can pass through the convex lens 63 and hit the light screen 64 after passing through the inclined surface of its corresponding semi-transmissive semi-reflective right-angle prism 62.

[0095] Similarly, if each laser 310 to be debugged is arranged along the second direction Y, then multiple semi-transmissive semi-reflective right-angle prisms 62 are also arranged along the second direction Y. At this time, the convex lens 63 and the light screen 64 are located on one side of the multiple semi-transmissive semi-reflective right-angle prisms 62 along the second direction Y, so that the light emitted by each laser 310 to be debugged can pass through the convex lens 63 and hit the light screen 64 after being reflected by the inclined surface of its corresponding semi-transmissive semi-reflective right-angle prism 62.

[0096] Moreover, the right-angle prism is set as a semi-lens semi-reflective prism because the light emitted by a laser 310 to be debugged may pass through the inclined surface of its corresponding semi-transmissive semi-reflective right-angle prism 62 and then reach the convex lens 63 after being reflected and then pass through other semi-transmissive semi-reflective right-angle prisms 62.

[0097] It can be understood that if the light emitted by each laser 310 to be debugged is transmitted along the third direction Z, since the optical platform 61 is perpendicular to the third direction Z, the light emitted by each laser 310 to be debugged will be parallel light after being reflected by the inclined surface of its corresponding semi-transmissive semi-reflective right-angle prism 62. These parallel lights are incident on the convex lens 63. Since the light screen 64 is located at the focal point of the convex lens 63, these parallel lights will finally converge at a point.

[0098] From this, it can be understood that by adjusting the postures of the lasers 310, the light emitted by each laser 310 is reflected by the inclined surface of the corresponding semi-transmissive semi-reflective right-angle prism 62 and then converges at the same point on the light screen 64 through the convex lens 63, so that the light emitted by the laser 310 to be debugged is transmitted along the third direction Z and the light emitted by each laser 310 to be debugged is parallel.

[0099] In other embodiments of the present application, other debugging devices can also be used to pre-adjust the light emitted by each laser 310 to be transmitted along the third direction Z, so as to simulate the incident of parallel sunlight on each reflecting sub-mirror of the trough-shaped condenser.

[0100] Accordingly, an embodiment of the present application further provides a method for detecting the splicing angle of the reflecting sub-mirrors of a trough concentrator, which is applied to the detection system for the splicing angle of the reflecting sub-mirrors of a trough concentrator provided in any of the above embodiments. Refer to Figure 1 and Figure 3 As shown, the trough concentrator 10 is formed by splicing a plurality of reflecting sub-mirrors 11 arranged in an array along a first direction X and a second direction Y. The first direction X and the second direction Y are perpendicular. The method for detecting the splicing angle of the reflecting sub-mirrors of a trough concentrator provided in an embodiment of the present application includes:

[0101] S10: Use the support and adjustment device 20 to support each reflecting sub-mirror 11 of the trough concentrator 10. Each reflecting sub-mirror 11 has n support points, and the height of the corresponding position of the reflecting sub-mirror 11 can be adjusted at each support point;

[0102] S20: Place the laser group 31 of the image acquisition device 30 above one reflecting sub-mirror, and place the ground glass 32 of the image acquisition device 30 on the ideal focal line of the trough concentrator 10. Use the light rays emitted by each laser 310 in the laser group 31 to project along a third direction Z onto the reflecting sub-mirror 11. After being reflected by the reflecting sub-mirror 11, a spot image is formed on the ground glass 32. The third direction Z is perpendicular to the first direction X and perpendicular to the second direction Y, and use the camera 33 of the image acquisition device 30 to collect the spot image;

[0103] S30: Use the processor 41 of the image processing device 40 to receive the spot image collected by the camera, and based on the spot image, determine whether the light rays emitted by each laser 310 in the laser group 31 form spots on the ground glass 32 after being reflected by the reflecting sub-mirror 11, and whether the spots coincide. If not, instruct the support and adjustment device 20 to adjust the height of the support points of the reflecting sub-mirror 11 until the light rays emitted by each laser 310 in the laser group 31 form spots on the ground glass 32 after being reflected by the reflecting sub-mirror 11, and the spots coincide.

[0104] It can be understood that when the laser group 31 is placed above a reflecting sub-mirror 11, each laser 310 in the laser group 31 corresponds to a support point of the reflecting sub-mirror 11 one by one, and the light rays emitted by each laser 310 are transmitted along the third direction Z. As a result, the projection points of the light rays emitted by each laser 310 in the laser group 31 on the reflecting sub-mirror 11 correspond to the support points of the reflecting sub-mirror 11 one by one. Thus, the light rays emitted by each laser 310 in the laser group 31 are projected onto the reflecting sub-mirror 11 along the third direction Z. After being reflected by the reflecting sub-mirror 11, a spot image is formed on the ground glass 32, simulating the parallel sunlight incident on the reflecting sub-mirror 11. The spot image on the ground glass 32 is collected by the camera 33 and transmitted to the processor 41, enabling the processor 41 to determine, based on the spot image, whether the light rays emitted by each laser 310 in the laser group 31 form spots on the ground glass 32 after being reflected by the reflecting sub-mirror 11, and whether the spots formed by the light rays emitted by each laser 310 in the laser group 31 on the ground glass 32 after being reflected by the reflecting sub-mirror 11 coincide. If not, it is indicated to adjust the height of the support point of the reflecting sub-mirror 11 until the light rays emitted by each laser 310 in the laser group 31 form spots on the ground glass 32 after being reflected by the reflecting sub-mirror 11, and the spots formed by the light rays emitted by each laser 310 in the laser group 31 on the ground glass 32 after being reflected by the reflecting sub-mirror 11 coincide, that is, the spots reflected by the same reflecting sub-mirror 11 coincide on the ground glass 32, indicating that the focus of the reflecting sub-mirror 11 is located on the ideal focal line of the trough concentrator 10. By analogy, the quick detection of the splicing angles of each reflecting sub-mirror 11 of the trough concentrator 10 and the guidance for installation and adjustment can be completed. It not only has a fast detection speed and high detection accuracy, but also has simple system calibration and image processing and is easy to operate.

[0105] It should be noted that the present application does not limit the order of detecting the splicing angles of each reflecting sub-mirror 11 in the trough concentrator 10 and guiding the installation and adjustment. That is to say, it is possible to detect the splicing angles of each reflecting sub-mirror 11 in the trough concentrator 10 one by one and guide the installation and adjustment, and the order of each reflecting sub-mirror 11 is not limited. At this time, at least one set of laser groups 31 in the image acquisition device 30 is sufficient; it is also possible to detect the splicing angles of each row of reflecting sub-mirrors 11 arranged along the second direction Y in the trough concentrator 10 one by one and guide the installation and adjustment, and the order of each row of reflecting sub-mirrors 11 is not limited; it is also possible to detect the splicing angles of each column of reflecting sub-mirrors 11 arranged along the first direction X in the trough concentrator 10 one by one and guide the installation and adjustment, and the order of each column of reflecting sub-mirrors 11 is not limited; it is also possible to detect the splicing angles of some or all of the reflecting sub-mirrors 11 in the trough concentrator 10 simultaneously and guide the installation and adjustment, depending on the specific situation.

[0106] Based on the above embodiments, optionally, in some embodiments of the present application, such asFigure 5 As shown, the detection system for the splicing angle of the reflecting sub - mirrors of the trough - type concentrator further includes a debugging device 60. Before detecting and guiding the alignment of the splicing angles of some or all of the reflecting sub - mirrors 11 in the trough - type concentrator 10, the method for detecting the splicing angle of the reflecting sub - mirrors of the trough - type concentrator provided by the embodiments of the present application may further include:

[0107] S40: Use the debugging device 60 to debug the light emitted by a plurality of lasers 310 arranged along the first direction X to transmit along the third direction Z, and / or debug the light emitted by a plurality of lasers 310 arranged along the second direction Y to transmit along the third direction Z, so that the light emitted by each laser 310 transmits along the third direction Z, facilitating the simulation of parallel sunlight incident on each reflecting sub - mirror of the trough - type concentrator mirror.

[0108] In this specification, each part is described in a combination of parallel and progressive manners. The key point of each part is to illustrate the differences from other parts. For the same or similar parts among each part, reference can be made to each other.

[0109] Regarding the above description of the disclosed embodiments, the features recorded in each embodiment in this specification can be replaced or combined with each other, enabling those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A detection system for the splicing angle of a trough-type concentrator reflector sub-mirror, characterized in that: The trough concentrator is composed of a plurality of reflective sub-mirrors arranged in an array along a first direction and a second direction, wherein the first direction is perpendicular to the second direction, and a detection system for the splicing angle of the reflective sub-mirrors of the trough concentrator comprises: A supporting and adjusting device, used for supporting and adjusting each of the reflecting sub-mirrors of the trough concentrator, each of which has n supporting points, and the height of the corresponding position of the reflecting sub-mirror can be adjusted at each supporting point, where n≥2, and n is an integer; An image acquisition device, comprising a laser group, frosted glass and a camera; the frosted glass is located on the ideal focal line of the trough concentrator; the laser group comprises n lasers, when the laser group is placed above one of the reflective sub-mirrors, the light emitted by each of the lasers in the laser group is projected onto the reflective sub-mirror along a third direction, and a light spot image is formed on the frosted glass after being reflected by the reflective sub-mirror, the projection points of the light emitted by each of the lasers in the laser group on the reflective sub-mirror correspond to the supporting points of the reflective sub-mirror one by one, the third direction is perpendicular to the first direction and perpendicular to the second direction; the camera acquires the light spot image; The image processing device includes a processor, which receives the light spot image captured by the camera, and based on the light spot image, determines whether the light emitted by each laser in the laser group forms a light spot on the frosted glass after being reflected by the reflecting sub-mirror, and whether the light spots overlap. If not, it indicates to adjust the height of the supporting point of the reflecting sub-mirror until the light emitted by each laser in the laser group forms a light spot on the frosted glass after being reflected by the reflecting sub-mirror, and the light spots overlap.

2. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirrors according to claim 1 is characterized in that: The ideal focal line of the trough concentrator extends along the first direction, and the detection system of the splicing angle of the reflecting sub-mirrors of the trough concentrator further includes a mechanical device, and the mechanical device includes: A gantry set, comprising a first gantry and a second gantry with adjustable heights; A guide rail group, comprising a first guide rail located on the first gantry and a second guide rail located on the second gantry, the first guide rail and the second guide rail are arranged parallel to each other in the first direction and at the same height, and the supporting and adjusting device and the trough concentrator are placed between the first guide rail and the second guide rail; a crossbeam frame, the crossbeam frame spanning the first guide rail and the second guide rail along the second direction; The image acquisition device includes a plurality of laser groups, and the laser groups are mounted on the crossbeam frame; when the crossbeam frame is located above a row of reflective sub-mirrors arranged along the second direction in the trough concentrator, the laser groups correspond one-to-one to the reflective sub-mirrors; the frosted glass and the camera are suspended on the crossbeam frame.

3. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirror according to claim 2 is characterized in that: There is one crossbeam frame, and the one crossbeam frame is movable along the first direction on the first guide rail and the second guide rail.

4. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirrors according to claim 2 is characterized in that: There are multiple cross beam frames, and each of the cross beam frames corresponds one-to-one to each row of the reflective sub-mirrors arranged along the second direction in the trough concentrator.

5. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirrors according to claim 2 is characterized in that: The lasers are arranged along the first direction and the second direction; The detection system for the splicing angle of the trough-type concentrator reflecting sub-mirrors also includes a debugging device for debugging the transmission of light emitted by the multiple lasers arranged along the first direction along the third direction, and / or debugging the transmission of light emitted by the multiple lasers arranged along the second direction along the third direction.

6. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirrors according to claim 5 is characterized in that: The debugging device comprises: an optical platform, when debugging the light emitted by the plurality of lasers arranged along the first direction or along the second direction, the optical platform is placed below each of the lasers to be debugged, and the optical platform is perpendicular to the third direction; A plurality of semi-transmissive and semi-reflective right-angle prisms, wherein the semi-transmissive and semi-reflective right-angle prisms are located on the optical platform, and the semi-transmissive and semi-reflective right-angle prisms correspond one by one to the laser to be debugged; Convex lens and light screen, the light emitted by each of the lasers arranged along the first direction or along the second direction to be debugged is projected onto the inclined surface of the semi-transmissive and semi-reflective right-angle prism, and then projected onto the convex lens after being reflected by the inclined surface of the right-angle prism, and then passes through the convex lens and hits the light screen, and the light screen is located at the focus of the convex lens; By adjusting the posture of each laser, the light emitted by each laser is reflected by the corresponding inclined surface of the semi-transmissive and semi-reflective right-angle prism, and then converged at the same point on the light screen through the convex lens, so that the light emitted by the adjusted laser is transmitted along the third direction.

7. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirrors according to any one of claims 1 to 6, characterized in that: The image acquisition device also includes: A data line is used to transmit the light spot image captured by the camera to the processor.

8. The detection system for the splicing angle of the trough-type concentrator reflector sub-mirrors according to any one of claims 1 to 6, characterized in that: The image processing device further comprises: A display screen is used to display instruction information for adjusting the supporting points of each of the reflecting sub-mirrors.

9. The detection system for the splicing angle of the trough concentrator reflector sub-mirrors according to any one of claims 1 to 6, characterized in that: The light emitted by each of the lasers has a different color, and the camera is a color camera.

10. A method for detecting the splicing angle of a trough-type concentrator reflector sub-mirror, characterized in that: A detection system for the splicing angle of a reflecting sub-mirror of a trough concentrator applied to any one of claims 1 to 9, wherein the trough concentrator is composed of a plurality of reflecting sub-mirrors arranged in an array along a first direction and a second direction, wherein the first direction is perpendicular to the second direction, and a method for detecting the splicing angle of the reflecting sub-mirrors of the trough concentrator comprises: The reflective sub-mirrors of the trough concentrator are supported by a support and adjustment device, each of which has n support points, and the height of the corresponding position of the reflective sub-mirror can be adjusted at each support point, where n≥2, and n is an integer; The laser group of the image acquisition device is placed above one of the reflective sub-mirrors, and the frosted glass of the image acquisition device is placed on the ideal focal line of the trough-type concentrator, and the light emitted by each of the lasers in the laser group is projected onto the reflective sub-mirror along a third direction, and a light spot image is formed on the frosted glass after being reflected by the reflective sub-mirror, wherein the third direction is perpendicular to the first direction and the second direction, and the light spot image is acquired by the camera of the image acquisition device; The processor of the image processing device is used to receive the light spot image captured by the camera, and based on the light spot image, it is determined whether the light emitted by each laser in the laser group forms a light spot on the frosted glass after being reflected by the reflecting sub-mirror, and whether the light spots overlap. If not, the supporting and adjusting device is instructed to adjust the height of the supporting point of the reflecting sub-mirror until the light emitted by each laser in the laser group forms a light spot on the frosted glass after being reflected by the reflecting sub-mirror, and the light spots overlap.

Images