A light focusing self-tracking optical fiber light guide system

Abstract

The application discloses a light-gathering self-tracking optical fiber light guide system, and relates to the technical field of optical fiber application. The light-gathering self-tracking optical fiber light guide system comprises a support, a plurality of light collecting tubes, an optical fiber assembly, a lighting lamp, a driving device in transmission connection with the light collecting tubes, an energy storage control system in communication connection with the driving device, and a photovoltaic cell panel fixedly arranged on the support and electrically connected with the energy storage control system. A linear strip Fresnel thread is engraved on the inner surface of the light collecting tube to first concentrate sunlight, and an eccentric reflector is lined to secondly concentrate sunlight. Light is transmitted through a plurality of light absorbers fixedly arranged in the light collecting tube, and the transmission sunlight intensity is thirdly improved through a beam combiner. The photovoltaic power drives the driving device to move, and each light collecting tube rotates around its own axis according to time as a control element. The photovoltaic cell panel has the same inclination angle as each light collecting tube. The light-gathering self-tracking optical fiber light guide system can automatically track sunlight, has high light-gathering, can transmit full-spectrum sunlight, and can reduce the temperature of a light collecting body to effectively prolong the service life of the device.

Description

Technical Field

[0001] This invention relates to the field of optical fiber application technology, and in particular to a focusing self-tracking optical fiber guiding system. Background Technology

[0002] In recent years, due to the continuous development of economic construction, energy conservation and environmental protection have become major themes in today's society. Fiber optic lighting systems are green lighting devices that utilize solar energy. The principle is to collect natural light through a light-collecting dome, redistribute it within the system, and then transmit and intensify it through specially made light guides before a diffuser evenly and efficiently illuminates any location requiring light, achieving a unique lighting effect from natural light.

[0003] Existing fiber optic light guiding systems have the following problems, which affect the promotion of the technology: the intensity of sunlight collected is limited, which is usually compensated for by using a focusing lens, but high-concentration light leads to excessively high temperatures, thus affecting the lifespan of the fiber; conventional sunlight tracking systems mainly use photosensitive sensors for control, but photosensitive sensors are greatly affected by the external environment, and bright spots in the clouds can cause disturbances to the tracker device, seriously affecting normal operation. Summary of the Invention

[0004] The purpose of this invention is to provide a focusing self-tracking fiber optic light guiding system to solve the problems existing in the prior art, which can automatically track sunlight, transmit sunlight across the full spectrum, and improve the service life of the device.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a focusing self-tracking fiber optic light guiding system, comprising an inclined support, a plurality of light-collecting tubes sequentially movably arranged on the support, an optical fiber assembly connected to the light absorbers, a lighting lamp connected to the optical fiber assembly, a driving device driven by the light-collecting tubes, an energy storage control system communicatively connected to the driving device, and a photovoltaic panel fixedly arranged on the support and electrically connected to the energy storage control system; a plurality of light absorbers are fixedly arranged inside the light-collecting tubes; the driving device can drive each light-collecting tube to rotate around its own axis; the photovoltaic panel has the same tilt angle as each light-collecting tube.

[0007] Preferably, a bushing and a transmission belt are movably mounted on the bracket. Each light-collecting tube is fixedly connected at one end to the bushing and at the other end to the transmission belt. The driving device is connected to the transmission belt and can drive the transmission belt to rotate so that each light-collecting tube rotates around its own axis.

[0008] Preferably, the energy storage control system consists of photovoltaic power generation and energy storage control unit. The photovoltaic energy storage control unit has a built-in control logic database, and the control drive device drives the light-collecting tube to rotate at different angles along its own axis.

[0009] Preferably, the drive device includes a DC reciprocating motor and a connector fixedly mounted on the output shaft of the DC reciprocating motor. The transmission belt has a sleeve hole into which the connector can extend. The DC reciprocating motor can drive the connector to rotate, thereby moving the transmission belt.

[0010] Preferably, the light-collecting tube is circular, and an eccentric reflector is fixedly installed inside the light-collecting tube so that sunlight entering the light-collecting tube can be focused onto the light absorber by the eccentric reflector.

[0011] Preferably, the reflector has a cross-sectional shape that is an eccentric involute of the glass tube. According to the light concentration ratio requirement, the diameter of the glass tube is R, and the radius of the involute r is calculated as (1 / 5-1 / 2)R.

[0012] Preferably, a strip-shaped linear Fresnel thread is formed on the inner wall surface of the sunlight-receiving tube on the side where sunlight is incident, and the teeth of the strip-shaped linear Fresnel thread face the light absorber.

[0013] Preferably, the tooth height of the strip-shaped linear Fresnel thread is 1 / 4 to 1 / 2 of the wall thickness of the light-collecting tube.

[0014] Preferably, one end of the light-collecting tube is open, and a sealing plug is fixedly installed at one end of the light-collecting tube opening, and the sealing plug has heat dissipation holes.

[0015] Preferably, the optical fiber assembly includes a plurality of linear optical fibers that can extend into the light-collecting tube and be connected to the light absorber, a light-guiding optical fiber, and an optical fiber combiner with one end connected to the plurality of linear optical fibers and the other end connected to the light-guiding optical fiber. The end of the light-guiding optical fiber away from the optical fiber combiner is connected to the lighting lamp.

[0016] Preferably, the light absorber is a lens cylinder composed of multiple spherical convex lens cylinders evenly distributed around an axis, with an aluminum foil disposed between any two adjacent spherical convex lens cylinders, and a linear optical fiber disposed within each of the spherical convex lens cylinders.

[0017] Preferably, the optical fiber includes a sheath, a non-woven fabric, a water-blocking layer, and a GFRP extrusion layer coaxially arranged from the outside to the inside. One end of the optical fiber combiner can extend into the GFRP extrusion layer. The water-blocking layer is uniformly distributed with multiple tear-resistant ropes and optical cable units. The optical cable unit includes an outer aramid layer, a full-color sub-cable, an inner aramid layer, and a quartz optical cable coaxially arranged from the outside to the inside.

[0018] Preferably, the energy storage control system has a built-in control logic database, which is based on the correspondence between solar altitude angle and time for different latitudes and longitudes and different seasons, with time as the main element, and is established by linking photovoltaic output to control the rotation angle of the reciprocating motor.

[0019] The present invention achieves the following technical effects compared to the prior art:

[0020] The self-tracking concentrated fiber optic light guide system provided by this invention uses an energy storage control system to control a drive device that rotates a light-collecting tube to directionally track sunlight. Based on local latitude and longitude, solar altitude angles in different seasons, and other data, a database of the correspondence between solar azimuth angles and time at different locations is established. This database is embedded in the energy storage control system. Using time as the primary factor and linked to photovoltaic output voltage parameters, the rotation angle of the drive device is controlled. This, in turn, drives the light-collecting tube to rotate at different angles via a transmission belt, achieving efficient sunlight collection.

[0021] The focusing self-tracking fiber optic light guiding system provided by this invention focuses sunlight for the first time through the strip-shaped linear Fresnel thread on the inner surface of the light-collecting tube. Sunlight from all directions entering the light-collecting tube is then incident on the curved surface of the eccentric reflector, and focused a second time onto the light absorber. The light absorber is connected to a linear fiber optic cable for light guiding. Multiple linear fibers are focused a third time through a fiber optic combiner for light guiding and transmission. After the sunlight is transmitted to the target location through the light guiding fiber, it is released through a sunlight lighting lamp, achieving the purpose of full-spectrum sunlight transmission.

[0022] The focusing self-tracking fiber optic light guide system provided by this invention retains the high temperature generated after the sun is focused on the eccentric reflector, effectively reducing the temperature of the light absorber and thus improving the service life of the device.

[0023] The focusing self-tracking fiber optic light guide system provided by the present invention has heat dissipation holes in the sealing plug at the opening end of the light-collecting tube to reduce the temperature inside the light-collecting tube.

[0024] The self-tracking optical fiber light guide system provided by this invention establishes a time-based control system by utilizing the corresponding relationship between solar altitude angles at different latitudes, seasons, and times. This system replaces photosensitive sensor control and overcomes the problem that photosensitive sensors are greatly affected by external environmental disturbances. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the focusing self-tracking optical fiber light guide system provided by the present invention.

[0027] Figure 2 A side view of the focusing self-tracking fiber optic light guide system provided by the present invention;

[0028] Figure 3 A top view of the light-collecting tube provided by the present invention;

[0029] Figure 4 A cross-sectional view of the light-collecting tube provided for this invention;

[0030] Figure 5 A schematic diagram of the light-collecting tube focusing principle provided by the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the light absorber provided by the present invention;

[0032] Figure 7 This is a schematic diagram of the light-absorbing optical guide transmission principle provided by the present invention;

[0033] Figure 8 The optical fiber guiding principle diagram provided for this invention;

[0034] Figure 9 A schematic diagram of the optical fiber bundling principle provided for this invention;

[0035] Figure 10 A cross-sectional view of the optical fiber provided by the present invention;

[0036] Figure 11 A schematic diagram of a driving device provided by the present invention;

[0037] Figure 12 Another schematic diagram of the driving device provided by the present invention;

[0038] Figure 13 for Figure 11 Transmission principle diagram of the drive unit;

[0039] Figure 14 for Figure 12 Transmission principle diagram of the drive unit;

[0040] Figure 15 This is a schematic diagram of the structure of the bushing provided by the present invention;

[0041] Figure 16 The control logic diagram of the energy storage control system provided by the present invention;

[0042] In the diagram: 1-Light-collecting tube; 11-Strip linear Fresnel thread; 12-Eccentric reflector; 13-Clamp; 14-Light absorber; 15-Spherical convex lens cylinder; 16-Aluminum foil; 17-Fixing clip; 18-Sealing plug; 19-Heat dissipation hole; 2-Drive belt; 21-Sleeve hole; 3-Shaft sleeve; 4-Drive device; 41-DC reciprocating motor; 42-Connector; 43-Blocking position; 5-Photovoltaic panel; 6-Energy storage control system; 7-Bracket; 8-Fiber optic assembly; 81-Light guiding fiber; 82-Linear fiber; 83-Fiber optic combiner; 811-Quartz optical cable; 812-Full spectrum sub-cable; 813-GFRP extruded pad layer; 814-Tear-resistant rope; 815-Aramid fiber; 816-Sheath; 817-Non-woven fabric; 818-Water-blocking layer; 9-Lighting lamp. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The purpose of this invention is to provide a focusing self-tracking fiber optic light guiding system to solve the problems existing in the prior art, which can automatically track sunlight, transmit sunlight across the full spectrum, and improve the service life of the device.

[0045] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] This invention provides a focusing self-tracking fiber optic light guiding system, such as... Figures 1-16As shown, in this embodiment, the system includes an inclined support 7, multiple light-collecting tubes 1 sequentially movably mounted on the support 7, an optical fiber assembly 8 connected to a light absorber 14, a lighting lamp 9 connected to the optical fiber assembly, a drive device 4 connected to the light-collecting tubes 1, an energy storage control system 6 communicatively connected to the drive device 4 via cables and signal control lines, and a photovoltaic panel 5 fixedly mounted on the support 7 and electrically connected to the energy storage control system 6. Multiple light absorbers 14 are fixedly mounted inside the light-collecting tubes 1 by clamps 13. The drive device 4 can drive each light-collecting tube 1 to rotate around its own axis. The sun shines on the light-collecting tubes every day and every hour. The azimuth angle is related to the local latitude and longitude and the solar altitude angle of the season. A database of the correspondence between the solar azimuth angle and time can be established and placed in the energy storage control system 6. When the light-collecting tube 1 performs sun-tracking movement, time is the main control factor. Combined with the power generation voltage of the photovoltaic panel 5, the solar irradiance intensity is judged, and the DC reciprocating motor 41 is linked to control whether it operates and the angle of operation, thereby determining the sun-tracking angle of the light-collecting tube 1. The photovoltaic panel 5 and each light-collecting tube 1 have the same tilt angle to ensure that the photovoltaic panel 5 and the light-collecting tube 1 receive sunlight at the same angle, thereby improving the accuracy of the sun-tracking of the light-collecting tube 1.

[0047] A bushing 3 and a transmission belt 2 are movably mounted on the bracket 7. The movement mode of the bushing 3 and the transmission belt 2 is similar to that of a conveyor belt. Both ends of the light-collecting tube 1 are provided with fixing clips 17. One end of each light-collecting tube 1 is fixedly connected to the bushing 3 through the fixing clip 17, and the other end is fixedly connected to the transmission belt 2 through the fixing clip 17. The driving device 4 is connected to the transmission belt 2. The driving device 4 can drive the transmission belt 2 to move so as to drive each light-collecting tube 1 to rotate around its own axis.

[0048] The drive device 4 includes a DC reciprocating motor 41 and a connector 42 fixedly mounted on the output shaft of the DC reciprocating motor 41. The connector 42 is a straight rod or a U-shaped rod. The connector 42 has blocking positions 43 at both ends. The straight rod forms a middle insertion locking position, and the U-shaped rod forms a bag-shaped locking position. The transmission belt 2 has a sleeve hole 21. The blocking position 43 of the connector 42 can extend into the sleeve hole 21 to realize the connection between the connector 42 and the transmission belt 2. The output shaft of the DC reciprocating motor 41 can rotate 90° clockwise and counterclockwise, thereby driving the transmission belt 2 to move through the connector 42, and further driving the light-collecting tube 1 to perform a 90° left and right solar self-tracking movement.

[0049] The light-collecting tube 1 is circular and preferably made of a high-transmittance material such as glass or acrylic. An eccentric reflector 12 is fixedly installed inside the light-collecting tube. Sunlight entering the light-collecting tube 1 can be focused by the eccentric reflector 12 onto the light absorber 14. The eccentric reflector 12 is made of thin metal plate and has a reflective film on the side facing the sunlight. The cross-sectional shape of the eccentric reflector 12 is an eccentric involute of the cross-section of the light-collecting tube 1. The radius of the involute is 1 / 5 to 1 / 2 of the radius of the light-collecting tube 1, and the light concentration ratio can reach 1 to 10 times.

[0050] A strip-shaped linear Fresnel thread 11 is formed on the inner wall surface of the sunlight-receiving tube 1 at 1 / 3 to 1 / 2 of its side. The teeth of the strip-shaped linear Fresnel thread 11 are symmetrically oriented towards the light absorber 14 with the central axis of the light-receiving tube 1 as the center. Sunlight is focused by the strip-shaped linear Fresnel thread 11 on the inner surface of the light-receiving tube 1. Sunlight from all directions entering the light-receiving tube 1 is incident on the curved surface of the eccentric reflector 12 and focused a second time onto the light absorber 14. The light absorber 14 is connected to a linear optical fiber 82 for light guiding. Multiple linear optical fibers 82 are focused a third time by an optical fiber combiner 83 for light guiding and transmission. After the sunlight is transmitted to the target location through the light guiding fiber 81, it is released through the sunlight lighting lamp 9 to achieve the purpose of full-spectrum sunlight transmission.

[0051] The tooth height of the strip-shaped linear Fresnel thread 11 is 1 / 4 to 1 / 2 of the wall thickness of the light-collecting tube 1. The strip-shaped linear Fresnel thread 11 is engraved on the inner surface of the light-collecting tube 1 to reduce the impact of solar radiation on the interference angle and to prevent dust accumulation on the surface of the light-collecting tube 1 from affecting sunlight transmission. The strip-shaped linear Fresnel thread 11 can achieve the purpose of light concentration by changing the tooth height and the radius of curvature. After the sunlight is concentrated by the strip-shaped linear Fresnel thread 11, it is transmitted into the light-collecting tube 1. When sunlight at any angle above the involute is incident on the reflective surface of the eccentric reflector 12, its reflected light will be concentrated on the involute focal axis. The light absorber 14 is located on the involute focal axis.

[0052] One end of the light-collecting tube 1 is open, and a sealing plug 18 is fixedly installed at the open end of the light-collecting tube 1. A heat dissipation hole 19 is provided on the sealing plug 18.

[0053] The fiber optic assembly 8 includes multiple linear optical fibers 82 that can extend into the light-collecting tube 1 and be connected to the light absorber 14, a light-guiding optical fiber 81, and an optical fiber combiner connected at one end to the multiple linear optical fibers 82 and at the other end to the light-guiding optical fiber 81. The end of the light-guiding optical fiber 81 away from the optical fiber combiner 83 is connected to the lighting lamp 9. After the multiple linear optical fibers 82 pass through the optical fiber combiner 83, the light source frequency remains unchanged and the light guiding intensity is increased. The optical fiber combiner is formed by fusion tapering and cutting of multiple linear optical fibers 82, and then fusion splicing them with a multimode optical fiber or a double-clad optical fiber to form an optical fiber bundle, thereby improving the light guiding intensity.

[0054] The light absorber 14 is a lens cylinder composed of multiple spherical convex lens cylinders 15 evenly distributed around an axis. Preferably, there are four lens cylinders. The light absorber 14 is located on the focal axis of the eccentric reflector 12. Depending on the diameter of the light collecting tube 1, one to three rows of light absorbers 14 can be arranged inside the light collecting tube 1. An aluminum foil 16 is arranged between any two adjacent spherical convex lens cylinders 15. A linear optical fiber 82 is arranged inside each spherical convex lens cylinder 15. The linear optical fiber 82 is embedded on the side close to the aluminum foil 16. Through the spherical convex lens cylinder 15, the focused incident light can be turned into a small light spot and transmitted into the linear optical fiber 82 for transmission.

[0055] The optical fiber 81 is a light transmission tool that utilizes the principle of total internal reflection of light in a fiber made of glass or plastic. Since it is used in the outdoor-to-indoor section, it is necessary to comprehensively consider high temperature resistance and waterproof characteristics. The optical fiber 81 includes a sheath 816, a non-woven fabric 817, a water-blocking layer 818, and a GFRP extrusion layer 813, which are coaxially sleeved from the outside to the inside. A multimode optical fiber is inserted into the GFRP extrusion layer 813. Multiple tear-resistant ropes 814 and optical cable units are evenly distributed in the water-blocking layer 818. The optical cable unit includes an outer aramid fiber 815, a full-color sub-cable 812, an inner aramid fiber 815, and a quartz optical cable 811, which are coaxially sleeved from the outside to the inside.

[0056] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A focusing self-tracking fiber optic light guiding system, characterized in that: include: An inclined bracket, on which a bushing and a transmission belt are movably mounted; Multiple light-collecting tubes are sequentially and movably mounted on a support frame. Each light-collecting tube is fixedly connected at one end to a bushing and at the other end to a transmission belt. Multiple light-absorbing elements are fixedly installed inside the light-collecting tube. A strip-shaped linear Fresnel thread is formed on the inner wall of the light-collecting tube on the side where sunlight is incident, with the teeth of the strip-shaped linear Fresnel thread facing the light-absorbing element. The optical fiber assembly connected to the light absorber includes multiple linear optical fibers that can extend into the light-collecting tube and are connected to the light absorber; the light absorber is a lens cylinder composed of multiple spherical convex lens cylinders evenly distributed around an axis, and an aluminum foil is provided between any two adjacent spherical convex lens cylinders, and a linear optical fiber is provided in each of the spherical convex lens cylinders. Lighting fixtures connected to fiber optic components; A drive device connected to a transmission belt includes a DC reciprocating motor and a connector fixedly mounted on the output shaft of the DC reciprocating motor. The transmission belt has a sleeve hole, and the connector can extend into the sleeve hole. The DC reciprocating motor can drive the connector to rotate, thereby driving the transmission belt to reciprocate, so as to drive each light-collecting tube to reciprocate 90 degrees left and right around its own axis. The energy storage control system is connected in communication with the drive unit. The energy storage control system stores a database of the correspondence between solar azimuth and time. And a photovoltaic panel fixedly installed on the bracket and electrically connected to the energy storage control system, wherein the photovoltaic panel and each of the light-collecting tubes are tilted at the same angle; when the light-collecting tubes perform sun-tracking movement, time is used as the control element, and the solar irradiance intensity is determined by combining the photovoltaic panel's power generation voltage, and the linkage control drive device is used to determine whether the drive device operates and the angle of operation. The light-collecting tube is circular, and an eccentric reflector is fixedly installed inside it. The cross-sectional shape of the eccentric reflector is an eccentric involute of the cross-section of the light-collecting tube, and the radius of the involute is 1 / 5 to 1 / 2 of the radius of the light-collecting tube. The high temperature generated after the sun is concentrated remains on the eccentric reflector. The eccentric reflector is made of metal, and the sunlight entering the light-collecting tube can be concentrated by the eccentric reflector onto the light absorber. One end of the light-collecting tube is open, and a sealing plug is fixedly installed at one end of the opening of the light-collecting tube. The sealing plug has heat dissipation holes.

2. The focusing self-tracking fiber optic light guiding system according to claim 1, characterized in that: The tooth height of the strip-shaped linear Fresnel thread is 1 / 4 to 1 / 2 of the wall thickness of the light-collecting tube.

3. The focusing self-tracking fiber optic light guiding system according to claim 1, characterized in that: The optical fiber assembly further includes a light guide fiber and an optical fiber combiner connected at one end to the plurality of linear optical fibers and at the other end to the light guide fiber. The end of the light guide fiber away from the optical fiber combiner is connected to the lighting lamp.

4. A focusing self-tracking fiber optic light guiding system according to claim 3, characterized in that: The optical fiber includes a sheath, a non-woven fabric, a water-blocking layer, and a GFRP extrusion layer, which are coaxially arranged from the outside to the inside. One end of the optical fiber combiner can extend into the GFRP extrusion layer. The water-blocking layer is uniformly distributed with multiple tear-resistant ropes and optical cable units. The optical cable unit includes an outer aramid layer, a full-color sub-cable, an inner aramid layer, and a quartz optical cable, which are coaxially arranged from the outside to the inside.

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