An independently adjustable optical fiber sunlight lighting module, system and trajectory method

Abstract

The present invention discloses an independently adjustable optical fiber sunlight lighting module, including a lens barrel, an optical fiber is arranged at the bottom of the lens barrel, a lens is arranged at the top of the lens barrel, a sun tracking sensor is arranged on the outer periphery of the lens barrel, and the lens barrel is fixed on an electric pan-tilt platform. A lighting system is also disclosed, which adopts the lighting module; and a trajectory method is also disclosed, which can be closed-loop tracked and adjusted. The present invention is not limited to the use of the site, and the collection efficiency can also be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of sunlight lighting technology, and in particular to an independently adjustable optical fiber sunlight lighting module, system and trajectory method. Background Art

[0002] Fiber optic solar lighting is a technology that uses solar energy as energy to directly introduce sunlight into the room for lighting. It requires a fiber optic system for light splitting. Since it is a clean energy, this lighting method is worth promoting.

[0003] Existing lighting devices can all achieve good lighting collection functions, but through technical research, it is found that the existing technical solutions have at least the following problems:

[0004] 1. In some special installation locations, the overall machine swing may be limited and cannot fully track the sun's trajectory throughout the day. For example, the wall-mounted solar tracking device hung on the wall sometimes cannot swing too much left and right and up and down, which greatly reduces the use period of the existing structure.

[0005] Second, due to the optical accumulation error caused by mechanical processing, under the traditional solution, it is impossible to ensure that the convergent light spot of each lens can be coupled into each optical fiber, which greatly reduces the collection efficiency of the existing structure. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an independently adjustable fiber optic solar lighting module, system and trajectory method, which are not restricted in the use of the site and can effectively improve the collection efficiency.

[0007] In order to solve the above technical problems, the present invention provides an independently adjustable fiber optic solar lighting module, including a lens barrel, an optical fiber is arranged at the bottom of the lens barrel, a lens is arranged at the top of the lens barrel, a sun tracking sensor is arranged on the outer periphery of the lens barrel, and the lens barrel is fixed on an electric pan head.

[0008] Furthermore, a boss is provided on the inner wall of the lens barrel, and the boss cooperates with the inner wall of the lens barrel to form a support and installation platform, and the periphery of the lens is erected and fixed on the support and installation platform.

[0009] Furthermore, a mounting protrusion is provided on the periphery of the lens, and the mounting protrusion is constructed and fixed on the supporting mounting platform.

[0010] Furthermore, the solar tracking sensor is fixed on a mounting frame, a spherical protrusion is provided on the surface of the mounting frame, a spherical concave portion is provided on the surface of the lens barrel corresponding to the spherical protrusion, the spherical protrusion and the spherical concave portion are positioned in coordination and fixed by welding, and the radius of the spherical protrusion is smaller than the radius of the spherical concave portion.

[0011] Furthermore, a weight-reducing hole is provided on the lens barrel.

[0012] A lighting system comprises a sun tracking device and a collection device arranged on the sun tracking device, wherein a plurality of the lighting modules described above are arranged in the collection device.

[0013] Furthermore, it also includes a mounting base plate, which is provided with adjustment avoidance holes, the electric pan / tilt head of the lighting module is fixed to the back of the mounting base plate, and the lens barrel of the lighting module passes through the adjustment avoidance holes to one side of the mounting base plate surface.

[0014] A trajectory method, based on the above lighting system, comprises the following steps:

[0015] Step 1) Initialize the system;

[0016] Step 2) determine whether the GPS or Beidou signal is received normally. If the GPS or Beidou signal is not received, continue to determine until the GPS or Beidou signal is received normally;

[0017] Step 3) determining whether it is working time, if not, continue to determine and remain silent until it is determined to be working time, and then proceed to the next step;

[0018] Step 4) determining whether the direction of the acquisition device is within a set cone angle range of the sun's position;

[0019] If it is not within the set cone angle range, the sun tracking device is controlled according to the GPS or Beidou signal to adjust the direction of the collection device once, and jump to step 3);

[0020] When the cone angle is within the setting range, proceed to the next step:

[0021] Step 5) determining whether each lens barrel has reached the four-quadrant working threshold;

[0022] When the lens barrel does not reach the four-quadrant working threshold, an adjustment instruction is output according to the deviation direction of the lens barrel attitude data and the actual sun position, and a rough adjustment is performed on the lens barrel so that the lens barrel reaches the four-quadrant working threshold;

[0023] When the lens barrel reaches the four-quadrant working threshold, a position fine-tuning is performed according to the four-quadrant working threshold;

[0024] After adjustment, jump to step 3).

[0025] Beneficial effects of the present invention:

[0026] 1. Through the cooperation of the electric pan / tilt, a single lens barrel can be adjusted independently, and each lens barrel can focus on the sunlight by itself, solving the focusing problem caused by optical accumulation error and ensuring that the convergent light spot of each lens can be coupled into each optical fiber.

[0027] 2. After a single lens barrel can be adjusted independently, it can share the overall operation action to the greatest extent, and can better collect sunlight without large floating swing tracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the lighting module structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the sensor assembly matching structure of the present invention;

[0030] Figure 3 is a schematic diagram of the lighting system structure of the present invention;

[0031] Figure 4 yes Figure 3 The middle part of the structure is enlarged schematic diagram;

[0032] Figure 5 It is a flow chart of the trajectory method of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0034] Reference Figure 1 As shown, an embodiment of the independently adjustable optical fiber sunlight illumination module of the present invention comprises a lens barrel 1, an optical fiber is arranged at the bottom of the lens barrel, a lens 2 is arranged at the top of the lens barrel, a sun tracking sensor 3 is arranged on the outer periphery of the lens barrel, and the lens barrel is fixed on an electric pan-tilt head 4. The lens focuses sunlight to the end of the optical fiber and can couple into the optical fiber, the sun tracking sensor detects the position of the sun, and controls the posture of the lens barrel through the electric pan-tilt head, so that the focus position of the lens always maintains a good focus coupling effect.

[0035] A boss 5 is provided on the inner wall of the lens barrel, and the boss cooperates with the inner wall of the lens barrel to form a support and installation platform. The periphery of the lens is set up and fixed on the support and installation platform, and the fixing adopts self-tapping screws to directly lock, and the self-tapping screws pass through the lens and are threadedly connected to the support and installation platform, which is convenient for installation. In addition, a mounting convex part 6 is provided on the outer periphery of the lens, and the mounting convex part is set up and fixed on the support and installation platform. Through the design of the mounting convex part, the focusing part of the lens is not damaged during locking. A weight reduction hole 10 is opened on the lens barrel to reduce the weight of the lens barrel, reduce the load of the electric pan / tilt head, and run more stably.

[0036] Reference Figure 1 and Figure 2 As shown, in order to ensure the relative position of lens focusing and solar tracking sensor detection, the solar tracking sensor is fixed on the mounting frame 7, and a spherical convex portion 8 is provided on the surface of the mounting frame, and a spherical concave portion 9 is provided on the surface of the lens barrel corresponding to the spherical convex portion. The spherical convex portion and the spherical concave portion are positioned in coordination with each other and fixed by welding. The radius of the spherical convex portion is smaller than the radius of the spherical concave portion. During installation, the lens barrel is first fixed by a fixing device, and then the sunlight simulation device is turned on, and the fixing device is adjusted so that the lens focuses the optical fiber to the end of the optical fiber. Subsequently, the mounting frame fixed with the solar tracking sensor is attached to the surface of the lens barrel by a manipulator. Specifically, the spherical convex portion and the spherical concave portion are abutted together. According to the signal collected by the solar tracking sensor, the position of the mounting frame is adjusted. Here, it is adjusted to be 360-degree adjustable, and the double spherical surfaces are abutted, so that the adjustment is smoother, so that the simulated solar beam spot is located in the center of the four quadrants. At this time, the mounting frame and the lens barrel are fixed by welding.

[0037] Reference Figure 4 and Figure 5 As shown, the present invention further discloses a lighting system, including a solar tracking device 11 and a collection device 12 arranged on the solar tracking device, wherein a plurality of the above-mentioned lighting modules 15 are arranged in the collection device. Since each lighting module is provided with an independent electric pan / tilt head, each lighting module can be independently adjusted, and the adjustment has a certain range of angles, so that the overall operation action can be shared to the greatest extent, and sunlight can be better collected without large floating swing tracking, so it can be applicable to occasions with limited rotation.

[0038] In order to meet the needs of independent adjustment, a mounting base plate 13 is also designed, on which adjustment avoidance holes 14 are provided. The electric pan / tilt head of the lighting module is fixed to the back of the mounting base plate, and the lens barrel of the lighting module passes through the adjustment avoidance holes to one side of the surface of the mounting base plate. During assembly, the electric pan / tilt head of the lighting module passes through the adjustment avoidance holes from the front of the mounting base plate to the back and then is fixed, which makes assembly convenient.

[0039] Based on the above lighting system, the present invention also discloses a tracking method. The specific workflow of sunlight tracking is as follows: Figure 5As shown in the figure, the algorithm is a closed-loop control structure. First, the control system goes through an initialization self-check process, and then determines whether the current environment is day or night. If it is at night, it enters a silent state, and if it is during the day, it enters a tracking process. In addition, the system initialization must also complete the system resource configuration and the search for the reference position of the mechanical structure. It is very necessary to determine the reference position of the mechanical mechanism. During the operation of the system, occasional power failures are possible. It is necessary to prevent serious errors when the system is powered on again due to the inability to determine the current mechanical position; in addition, after sunset, the system needs to return to the reference position along the original route to avoid entanglement of optical fibers and cables. This also requires the system to have a definite reference position. This process is achieved through an angle sensor.

[0040] The specific trajectory method is as follows:

[0041] Initialize the system first; determine whether the GPS or Beidou signal is received normally. If the GPS or Beidou signal is not received, continue to determine until the GPS or Beidou signal is received normally;

[0042] Then, it is determined whether it is working time. If it is not working time, it is night time, then it continues to determine and remain silent until it is determined to be working time, it is day time, then it is determined whether the direction of the collection device is within the set cone angle range of the sun position;

[0043] There are two logics in the judgment process. First, when the direction of the acquisition device is not within the set cone angle range, the sun tracking device is controlled according to the GPS or Beidou signal to adjust the direction of the acquisition device once, so that the direction of the acquisition device is more aligned with the sun and within the set cone angle range. Then, the working time needs to be judged again, and the direction of the acquisition device is repeatedly judged according to the judged working time; second, when the direction of the acquisition device is within the set cone angle range, it continues to judge whether each lens barrel has reached the four-quadrant working threshold;

[0044] There are also two logics for judging whether the four-quadrant working threshold is reached. One is that when the lens barrel has not reached the four-quadrant working threshold, an adjustment instruction is output according to the deviation direction of the lens barrel attitude data and the actual sun position, and a coarse adjustment is performed on the lens barrel so that the lens barrel reaches the four-quadrant working threshold; the second is that when the lens barrel reaches the four-quadrant working threshold, a position fine-tuning is performed according to the four-quadrant working threshold, so that the alignment accuracy is further improved, and no matter whether the lens barrel directly judges that the four-quadrant working threshold is reached or reaches the four-quadrant working threshold after coarse adjustment, a fine-tuning is required to ensure the alignment accuracy; after the adjustment is completed, the judgment is re-made from the step of judging the working time, and the judgment is repeated in a cycle to achieve a closed-loop effect.

[0045] When judging whether the orientation of the collecting device is within the set cone angle range of the sun's position, if the orientation of the collecting device is not within the set cone angle range and the sun tracking device is restricted and cannot move any further, this situation is defined as being within the set cone angle range of the sun's position, and the position of a single tube lens is directly adjusted to continue and effectively collect sunlight.

[0046] When it is cloudy, the solar irradiance is weak and the scattered light is relatively strong. It is difficult for the four-quadrant detector to respond to changes in light. After the lens barrel is reset, no action is taken and the system switches to the solar trajectory tracking method based on GPS or Beidou for collection. Specifically, it is determined whether the current ambient light reaches the working threshold of the high-precision solar alignment system (four-quadrant detector). If it is lower than the threshold, it is determined that it is rainy or cloudy at this time, and the system immediately enters the tracking mode based on GPS or Beidou. Otherwise, it enters the photoelectric, GPS or Beidou dual detection and tracking mode.

[0047] Among them, when the lens barrel is reset, a preset angle is set. This angle is mainly set based on the installation base plate, and the acquisition device is facing the sun during GPS or Beidou tracking, and each lens barrel is also in the position after mobile calibration. The adjustment parameters of the position at this time are recorded. In the tracking mode based on GPS or Beidou, this adjustment parameter is the reset parameter.

[0048] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An independently adjustable optical fiber sunlight lighting method, characterized in that: The lighting system includes a sun tracking device and a collection device arranged on the sun tracking device, wherein a plurality of lighting modules are arranged in the collection device, wherein the lighting module includes a lens barrel, an optical fiber is arranged at the bottom of the lens barrel, a lens is arranged at the top of the lens barrel, a sun tracking sensor is arranged on the outer periphery of the lens barrel, and the lens barrel is fixed on an electric pan-tilt platform; The lighting method includes the following steps: Step 1) Initialize the system; Step 2) Determine whether the GPS or Beidou signal is received normally. If the GPS or Beidou signal is not received, continue to determine until the GPS or Beidou signal is received normally; Step 3) Determine whether it is working time. If it is not working time, continue to determine and remain silent until it is determined to be working time, and then proceed to the next step; Step 4) determining whether the direction of the acquisition device is within the set cone angle range of the sun's position; If it is not within the set cone angle range, the sun tracking device is controlled according to the GPS or Beidou signal to adjust the direction of the collection device once, and jump to step 3); When the cone angle is within the set range, proceed to the next step; Step 5) determining whether each lens barrel has reached the four-quadrant working threshold; When the lens barrel does not reach the four-quadrant working threshold, an adjustment instruction is output according to the deviation direction of the lens barrel attitude data and the actual sun position, and a rough adjustment is performed on the lens barrel so that the lens barrel reaches the four-quadrant working threshold; When the lens barrel reaches the four-quadrant working threshold, a position fine-tuning is performed according to the four-quadrant working threshold; After adjustment, jump to step 3).

2. The independently adjustable optical fiber sunlight lighting method according to claim 1, characterized in that: A boss is arranged on the inner wall of the lens barrel, and the boss cooperates with the inner wall of the lens barrel to form a support and installation platform, and the periphery of the lens is set up and fixed on the support and installation platform.

3. The independently adjustable optical fiber sunlight lighting method according to claim 2, characterized in that: A mounting convex portion is arranged on the outer periphery of the lens, and the mounting convex portion is built and fixed on the supporting mounting platform.

4. The independently adjustable optical fiber sunlight lighting method according to claim 1, characterized in that: The solar tracking sensor is fixed on a mounting frame, a spherical convex portion is provided on the surface of the mounting frame, a spherical concave portion is provided on the surface of the lens barrel corresponding to the spherical convex portion, the spherical convex portion and the spherical concave portion are positioned in cooperation with each other and fixed by welding, and the radius of the spherical convex portion is smaller than the radius of the spherical concave portion.

5. The independently adjustable optical fiber sunlight lighting method according to claim 1, characterized in that: The lens barrel is provided with a weight-reducing hole.

6. The independently adjustable optical fiber sunlight lighting method according to claim 1, characterized in that: It also includes a mounting base plate, which is provided with adjustment avoidance holes, the electric pan / tilt of the lighting module is fixed to the back of the mounting base plate, and the lens barrel of the lighting module passes through the adjustment avoidance holes to one side of the mounting base plate surface.

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