CN104881047A - Sunlight tracking device for solar panel - Google Patents
Sunlight tracking device for solar panel Download PDFInfo
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- CN104881047A CN104881047A CN201510153398.7A CN201510153398A CN104881047A CN 104881047 A CN104881047 A CN 104881047A CN 201510153398 A CN201510153398 A CN 201510153398A CN 104881047 A CN104881047 A CN 104881047A
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- solar panel
- stepper motor
- sunshine
- solar
- photoelectric sensor
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Abstract
The invention relates to the field of optical tracking and solar panels, and a sensor box installed on a light receiving surface of a solar panel is used for monitoring the change in the orientation of the sunlight. The sensor box is mainly provided internally with an elongated columnar whole pipette perpendicular to the solar panel and a photoelectric sensor. The whole pipette is used for selecting the angle of incidence of the sunlight, so that only the incident sunlight approximately perpendicular to the solar panel can arrive into the photoelectric sensor at the bottom. Through the determination of the magnitude of an output current of the photoelectric sensor, stepper motors are selectively driven to work, and the two stepper motors drive the solar panel to rotate through gear transmission and worm gear transmission, so as to ensure that the light receiving surface of the solar panel is always perpendicular to the incidence direction of the sunlight. According to the invention, the sunlight tracking device for the solar panel is highly cost-effective, the solar utilization efficiency of a fixed panel is improved, and the economic requirements of equipment, such as solar air conditioning, solar street lights and the like are met.
Description
Technical field
The present invention relates to a kind of sunshine follow-up mechanism for solar panel, be mainly used in solar panel.
Background technology
Sun power, as a kind of green energy resource of non-polluting renewable, has advantageous advantage compared to coal, oil, also therefore gains great popularity.Since 20 century 70s, sun power science and technology is advanced by leaps and bounds, and the application of sun power is also constantly expanded, and the heliotechnics that China is relatively ripe comprises solar-photovoltaic technology and solar water heating system.In recent years, the clean energy resource such as solar airconditioning, solar street light device steps into the life of people gradually, and first tool advantage in serviceability, production scale is expanding day also.On this basis, in order to improve the utilization ratio of sun power, various sunshine tracing system comes one after another, but should not promote due to system complex or each side such as equipment is simple, does not up to the present all have the system being easy to promote that ripe.
In order to realize complete real-time tracing, a lot of twin shaft tracing system all have employed by single-chip microcomputer process trace signals, and combine the tracing scheme that local solar azimuth carries out angular setting, this thinking has just been used in long " solar energy tracking device and the technology " book of teaching of marquis as Liaoning Institute of Science and Technology, although this method greatly improves Solar use efficiency, but make system too complicated, not easily promote; Some scholars are also had to adopt mechanical track mode, comparatively typically as " a kind of automatic solar energy tracking device of intelligence " that the patent No. is CN203630629U, be exactly by the photoresistance in design particular orientation and photodiode, record solar azimuth and make rotation, this method is comparatively simple, but need by more photovalve, and require higher to component locations, although therefore these trace modes can realize efficient tracking, but considering the reason of the aspect such as production technology, cost, also there is many deficiencies for applying.
Summary of the invention
In order to overcome the deficiency that conventional fixed-type solar panel multi-angle apparatus for real time tracking that is inefficient and CPU control is difficult to promote, the invention provides a kind of easy, the real-time tracing device of the sunray direction change of automatic tracing, this device absorbs sunshine by utilizing a full suction pipe of elongated column, the carrying out of angle of incidence of sunlight degree is monitored, the company's of utilization stepper motor driven gear transmission and Worm Wheel System respectively, control solar panel towards, solar panel operationally can be made a response according to the change of angle of incidence of sunlight degree in real time, make its sensitive surface all the time approximately perpendicular to incident light, improve the efficiency of light energy utilization.
The technical solution adopted for the present invention to solve the technical problems is: on the sensitive surface of solar panel, install an induction box, the existence of sunshine and the change of angle in sensed orientation, pitch orientation, an elongated full suction pipe is utilized to absorb sunshine selectively, make only could arrive the photoelectric sensor bottom full suction pipe approximately perpendicular to the light of solar panel, according to the working method of the size control step motor of photoelectric sensor output current, utilize stepper motor by worm and gear and gear drive, control the rotation of solar panel.When entering the full suction pipe in induction box when sunshine direct projection, the electric current that the sensor bottom full suction pipe exports is comparatively large, and stepper motor does not work; When sunshine angle changes (sunshine can not impinge perpendicularly on solar panel), light in full suction pipe dies down, current output sensor diminishes, now stepper motor is started working, respectively by gear drive and Worm Wheel System, drive solar panel rotates, to reach the effect of sunshine direct projection cell panel again.When sunshine very weak (as rainy weather, or after the sun falls at dusk) induction box is almost responded to less than sunshine, rotational support system auto zero, makes solar panel sensitive surface go to direction, due east, quits work subsequently.Sunshine follow-up mechanism will keep the state of quitting work, until there is stronger sunlight, sunshine follow-up mechanism just can restart.
For a sunshine follow-up mechanism for solar panel, comprise solar panel, induction box, rotating supporting device, drive unit; Described rotating supporting device comprises support bar, rotating base, back up pad, ring support, central shaft, U-shaped support; Described drive unit comprises stepper motor I, stepper motor II; Described induction box is arranged on the sensitive surface of solar panel, whether accepts sun direct projection in order to respond to solar panel; Described solar panel is fixed in described back up pad by described support bar, described back up pad is arranged on described rotating base, described rotating base is arranged on described ring support by central shaft, described ring support is arranged on described U-shaped support by connecting rod, and described U-shaped support is fixed on wall; Described induction box is connected with stepper motor I and stepper motor II respectively, and described stepper motor I is connected by Worm Wheel System with described rotating base; Described stepper motor II is connected by gear drive with described ring support.
In such scheme, described connecting rod one end is fixedly connected with ring support, and the described connecting rod other end and described U-shaped support are rotationally connected by bearing.
In such scheme, two ends and the ring support of described central shaft are threaded connection.
In such scheme, the output shaft of described stepper motor II is provided with pinion wheel, and described pinion wheel engagement gear wheel, gear wheel is coaxially fixed on connecting rod by key.
In such scheme, the output shaft of described stepper motor I and worm screw interference fit, described worm screw engages with turbine, and described turbine is coaxially arranged on described central shaft.
In such scheme, described induction box comprises full suction pipe, photoelectric sensor and substrate; The height H of described full suction pipe is 5cm, and radius R is 0.2 ~ 1cm, incides the azimuthal maximum changes values θ of sunshine of photoelectric sensor (13) and the pass between the height H of full suction pipe and radius R is: θ=2arctan (R/H).
The invention has the beneficial effects as follows, by utilizing induction box to the monitoring of sunray, make two stepper motors respectively by worm and gear and gear drive, drive solar panel automatically day by day, significantly improve relative to the semi-fixed type plant efficiency of artificial adjustment, and simpler than the complicated tracker equipment of Single-chip Controlling twin shaft real-time follow-up, be the optimum choice of a kind of efficiency and cost.
Accompanying drawing explanation
Fig. 1 is the one-piece construction figure of sunshine follow-up mechanism;
Fig. 2 is drive part sectional view;
Fig. 3 is structure principle chart of the present invention;
Fig. 4 is full duct size and angular relationship figure.
In figure: 1. solar panel 2. induction box 3. support bar 4. rotating base 5. back up pad 6. ring support 7. central shaft 8. stepper motor I 9.U type support 10. wall 11. sunshine 12. full suction pipe 13. photoelectric sensor 14. substrate 15. gear wheel 16. pinion wheel 17. stepper motor II 18. turbine 19. worm screw 20. connecting rod.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
In Fig. 1, the sensitive surface of solar panel 1 installs induction box 2, whether accept sun direct projection in order to respond to solar panel.Solar panel 1 is fixed in back up pad 5 by four support bars 3, back up pad 5 is arranged on coaxial rotating seat 4, ring support 6 is associated with U-shaped support 9 by connecting rod 20, connecting rod 20 is fixedly connected with ring support 6, be rotationally connected with U-shaped support 9, U-shaped support 9 is inclined and mounted on wall 10, meets connecting rod 20 parallel with earth pole axis, ring support 6 is rotated around connecting rod 20, and rotating base 4 moves in ring support 6 around central shaft 7.When two stepper motors receive working signal, stepper motor I8 is by worm and gear 19 transmission, driven rotary base 4 moves, stepper motor II 17 passes through gear drive, ring support 6 is driven to rotate, thus drive fagging 5 and support bar 3 to move, make solar panel 1 operationally its sensitive surface turn to sunshine direct projection direction all the time.
In fig. 2, the output shaft of stepper motor II17 is provided with pinion wheel 16, and pinion wheel 16 engages gear wheel 15, and the center of gear wheel 15 is by the coaxial stationary links 20 of key, and the other end of described connecting rod 20 is fixedly connected with by screw thread rotation with ring support 6.U-shaped support 9 opposite side is connected with connecting rod 20 by bearing, and connecting rod 20 and ring support 6 are revolved by screw thread and be fixedly connected with.The output shaft of stepper motor I8 and worm screw 19 interference fit, worm screw 19 engages with turbine 18, and turbine 18 is coaxially arranged on central shaft 7, and two ends and ring support 6 both sides of central shaft 7 are threaded connection.
When stepper motor I (8) receives the working signal that induction box (2) sends, described stepper motor I (8) is rotated by worm and gear driven rotary base (4), when described stepper motor II (17) receives the working signal that induction box (2) sends, described stepper motor II (17) drives described ring support (6) to rotate by gear drive, described ring support (6) can rotate on U-shaped support 9, described rotating base (4) can in the upper rotation of described ring support (6), thus drive fagging 5 and support bar 3 to move, make the rotation of solar panel 1 in two orientation.
In figure 3, induction box 2 is in order to encapsulate full suction pipe 12 and the photoelectric sensor 13 of its inside, and substrate 14 is for supporting and protection photoelectric sensor.The electric signal that photoelectric sensor 13 produces, after electrical amplifier amplifies, is worked by threshold current decision circuit.I
0the minimum electric signal that when expression can make sunshine tracing system work, in induction box, photoelectric sensor exports, I
1when representing that sunshine has just been similar to normal incidence solar panel, the minimum electric signal that in induction box, photoelectric sensor exports.In morning, when sunshine direct projection is towards the solar panel in direction, due east, the current value I exported in induction box 2 meets I
1>I>I
0, now to stepper motor I8 and stepper motor II17 send pacing inlet signal, stepper motor is started working, and namely sunlight tracking system starts, and induction box 2 starts the change of Real-Time Monitoring sunshine angle.Arrived the dusk, when the sun is about to fall, or when rainy weather, sunray is more weak, the current signal I<I that on solar panel, in induction box 2, photoelectric sensor records
0, now send rz signal to stepper motor I8 and stepper motor II17, solar tracking device zero (going to towards direction, due east) also quits work.During fair weather, during sunray direct projection solar panel 1, the current signal I>I that photoelectric sensor 13 exports
1, now send stop signal to stepper motor I8 and stepper motor II17, solar tracking device does not work.And after the sun turns over certain angle, in full suction pipe 12, light dies down, the electric signal spread out of is less, now I
0<I<I
1, stepper motor I8 and stepper motor II17 drives solar panel 1 to rotate, and makes the sunshine full suction pipe 12 of direct projection again, and the step-length that stepper motor advances is determined by the size of full suction pipe 12.For eliminating seasonal variations to the impact of sun light intensity, and the impact of the fluctuation of each moment sun light intensity in a day, must ensure that the output electric signal of photoelectric sensor 13 is similar to only relevant with the incident angle of sunshine, the reflectivity of this suction pipe 12 sidewall of will demanding perfection low as much as possible (guaranteeing greatly to absorb the light that other angles are injected), and the diameter of full suction pipe 12 is little as far as possible under the satisfied prerequisite having enough light to make photoelectric sensor 13 normally work, the signal approximation that photoelectric sensor 13 is detected is only relevant with the incident angle of sunshine.
In the diagram, the straight fluidic time of sunshine in the full suction pipe 12 of slender type, be approximately incident ray moves to full suction pipe 12 opposite side edge mistiming from full suction pipe 12 1 lateral edges, the azimuthal maximum changes values θ of interior sunshine 11 is two times of full suction pipe radius R and height H tangent angle during this period of time, i.e. θ=2arctan (RH), the height H of full suction pipe 12 is 5cm, the technical parameter of the photoelectric sensor that the radius R of full suction pipe can adopt according to the intensity of local sunshine and system is finely tuned, general interval is 0.2 ~ 1cm, if the radius R getting full suction pipe 12 is 0.44cm, when then sunshine 11 incides bottom full suction pipe, its azimuthal maximum changes values θ is 10 °.
Described embodiment is the preferred embodiment of the present invention; but the present invention is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.
Claims (5)
1. for a sunshine follow-up mechanism for solar panel, it is characterized in that, comprise solar panel (1), induction box (2), rotating supporting device, drive unit;
Described rotating supporting device comprises support bar (3), rotating base (4), back up pad (5), ring support (6), central shaft (7), U-shaped support (9);
Described drive unit comprises stepper motor I (8), stepper motor II (17);
Described induction box (2) is arranged on the sensitive surface of solar panel (1), whether accepts sun direct projection in order to respond to solar panel (1);
Described solar panel (1) is fixed in described back up pad (5) by described support bar (3), described back up pad (5) is arranged on described rotating base (4), described rotating base (4) is fixed on described central shaft (7), described central shaft (7) is arranged on described ring support (6), described ring support (6) is arranged on described U-shaped support (9) by connecting rod (20), and described U-shaped support (9) is fixed on wall (10);
Described induction box (2) is connected with stepper motor I (8) and stepper motor II (17) respectively, and described stepper motor I (8) is connected by Worm Wheel System with described rotating base (4); Described stepper motor II (17) is connected by gear drive with described ring support (6);
Described induction box (2) comprises full suction pipe (12), photoelectric sensor (13) and substrate (14); The height H of described full suction pipe (12) is 5cm, radius R is 0.2 ~ 1cm, incides the azimuthal maximum changes values θ of sunshine (11) of photoelectric sensor (13) and the pass between the height H of full suction pipe and radius R is: θ=2arctan (R/H).
2. a kind of sunshine follow-up mechanism for solar panel according to claim 1, it is characterized in that, described connecting rod (20) one end is fixedly connected with ring support (6), and described connecting rod (20) other end and described U-shaped support (9) are rotationally connected by bearing.
3. a kind of sunshine follow-up mechanism for solar panel according to claim 1, is characterized in that, two ends and the ring support (6) of described central shaft (7) are threaded connection.
4. a kind of sunshine follow-up mechanism for solar panel according to claim 1, it is characterized in that, the output shaft of described stepper motor II (17) is provided with pinion wheel (16), described pinion wheel (16) engagement gear wheel (15), gear wheel (15) is coaxially fixed on connecting rod (20) by key.
5. a kind of sunshine follow-up mechanism for solar panel according to claim 1, it is characterized in that, the output shaft of described stepper motor I (8) and worm screw (19) interference fit, described worm screw (19) engages with turbine (18), and described turbine (18) is coaxially arranged on described central shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153398.7A CN104881047A (en) | 2015-04-01 | 2015-04-01 | Sunlight tracking device for solar panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153398.7A CN104881047A (en) | 2015-04-01 | 2015-04-01 | Sunlight tracking device for solar panel |
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| Publication Number | Publication Date |
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| CN104881047A true CN104881047A (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510153398.7A Pending CN104881047A (en) | 2015-04-01 | 2015-04-01 | Sunlight tracking device for solar panel |
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| CN (1) | CN104881047A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107450598A (en) * | 2017-05-18 | 2017-12-08 | 北京大学深圳研究生院 | A kind of one side level crossing daylight tracing system |
| CN107491095A (en) * | 2017-08-04 | 2017-12-19 | 合肥千聚环保科技有限公司 | A kind of sunray follow-up mechanism based on solar panel installation |
| CN107918404A (en) * | 2017-11-30 | 2018-04-17 | 江苏永尚能源科技有限公司 | A kind of solar energy tracking device |
Citations (6)
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|---|---|---|---|---|
| US4215410A (en) * | 1979-02-09 | 1980-07-29 | Jerome H. Weslow | Solar tracker |
| CN101662241A (en) * | 2009-09-18 | 2010-03-03 | 杭州电子科技大学 | Sun orientation automatic tracking method and device used for photovoltaic power generation |
| CN101788824A (en) * | 2009-12-29 | 2010-07-28 | 天津大学 | Device for automatically tracing sun by solar cell panel based on geomagnetic field and control method |
| CN101943917A (en) * | 2010-09-08 | 2011-01-12 | 上海理工大学 | Light ray automatic-tracking device |
| CN202172075U (en) * | 2011-12-09 | 2012-03-21 | 卢序 | Mechanical type double-shaft solar tracker mounting |
| CN203606699U (en) * | 2013-08-21 | 2014-05-21 | 哈尔滨理工大学 | Diffuse-scattering sunlight tracing sensor |
-
2015
- 2015-04-01 CN CN201510153398.7A patent/CN104881047A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4215410A (en) * | 1979-02-09 | 1980-07-29 | Jerome H. Weslow | Solar tracker |
| CN101662241A (en) * | 2009-09-18 | 2010-03-03 | 杭州电子科技大学 | Sun orientation automatic tracking method and device used for photovoltaic power generation |
| CN101788824A (en) * | 2009-12-29 | 2010-07-28 | 天津大学 | Device for automatically tracing sun by solar cell panel based on geomagnetic field and control method |
| CN101943917A (en) * | 2010-09-08 | 2011-01-12 | 上海理工大学 | Light ray automatic-tracking device |
| CN202172075U (en) * | 2011-12-09 | 2012-03-21 | 卢序 | Mechanical type double-shaft solar tracker mounting |
| CN203606699U (en) * | 2013-08-21 | 2014-05-21 | 哈尔滨理工大学 | Diffuse-scattering sunlight tracing sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107450598A (en) * | 2017-05-18 | 2017-12-08 | 北京大学深圳研究生院 | A kind of one side level crossing daylight tracing system |
| CN107491095A (en) * | 2017-08-04 | 2017-12-19 | 合肥千聚环保科技有限公司 | A kind of sunray follow-up mechanism based on solar panel installation |
| CN107918404A (en) * | 2017-11-30 | 2018-04-17 | 江苏永尚能源科技有限公司 | A kind of solar energy tracking device |
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Application publication date: 20150902 |