CN104865974A - FPGA-based sunlight real-time tracking device and method - Google Patents
FPGA-based sunlight real-time tracking device and method Download PDFInfo
- Publication number
- CN104865974A CN104865974A CN201510129160.0A CN201510129160A CN104865974A CN 104865974 A CN104865974 A CN 104865974A CN 201510129160 A CN201510129160 A CN 201510129160A CN 104865974 A CN104865974 A CN 104865974A
- Authority
- CN
- China
- Prior art keywords
- sunshine
- fpga
- chip
- time tracking
- sunlight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses an FPGA-based sunlight real-time tracking device and method. The device includes a sunlight positioning system, an actuator and a power source module; the sunlight positioning system is in drive connection with an FPGA main control system through a signal conditioning circuit; the FPGA main control system is connected with the actuator and a computer terminal management system respectively; and the sunlight positioning system, the actuator and the computer terminal management system are respectively connected with the power source module. The method includes the following steps of: step 1, power source module switching on; step 2, preliminary positioning; step 3, accurate positioning; and step 4, system check and control. With the FPGA-based sunlight real-time tracking device and method of the invention adopted, a maximum contact surface between a solar panel and sunlight can be maintained, and highest generating efficiency of the solar panel can be maintained. The FPGA-based sunlight real-time tracking device has strong interference-resisting ability and can respond to emergencies quickly. The FPGA-based sunlight real-time tracking device is not only suitable for large-scale solar power generation and but also suitable for equipment using solar energy such as domestic solar water heaters.
Description
Technical field
The present invention relates to a kind of solar collecting device and method, particularly relate to a kind of sunshine apparatus for real time tracking based on FPGA and method.
Background technology
since entering 21st century, green become with sustainable development the problem that All Around The World is all paid close attention to, accomplished sustainable development by limited resource, become the significant obstacle of Development of Human Civilization, and this wherein energy problem just seem particularly outstanding.Outstanding equally in energy problem of China, the contradiction of energy demand and energy supply is more and more obvious.And sun power is as a kind of novel green regenerative energy sources, have reserves large, utilize the advantage such as economy, clean environment firendly.Therefore, sun power probably becomes the leading energy of following a period of time, replaces the fossil fuels such as original such as coal, oil, rock gas, breaks its monopolization in energy structure.
human use's sun power is mainly at opto-electronic conversion, photochemical conversion, photothermal deformation and optical storage technology etc.; And present stage, solar energy photoelectric conversion is Application of Solar Energy Main way, as each corner of the electricity generation systems such as solar energy garden lamp, user's electricity generation system, autonomous power supply system widespread use people life.The numerous areas such as this external communication, agricultural, industry, traffic, sun power is almost ubiquitous.Meanwhile, the matter of utmost importance that Solar use efficiency has become Application of Solar Energy field how is improved.
Now, European Countries and the national government promotion and implementation optical energy power engineering project such as Japan, the U.S., popularize solar house district energetically, the roof of house fill solar panel and generating set.Simultaneously, European and American countries scientific research institution is also at the solar tracking device that design is more outstanding, as Arizona, USA university is proposed the new type solar energy tracking means utilizing and control motor, this kind of device adopts aluminium type material, structure is simple, volume is light and handy, greatly enhances the application technology of tracker; In addition, in the last few years, China also obtained develop rapidly in heliotechnics.Wherein, China have developed sunshine single shaft hydraulic pressure autotracker, ZTK type high-precision full-automatic solar tracking control system etc.But it is high that these present ubiquities price, uses inconvenience; Solar facilities sunshine utilization ratio is low; Existing dynamic tracking sunshine system rejection to disturbance ability, can not accurate tracking sunshine and reduce sunshine and utilize, and to be unwell in complex environment practical; Maintenance cost is high; The shortcomings such as operation troubles rate is high.
Summary of the invention
the invention provides a kind of sunshine apparatus for real time tracking based on FPGA and method energy accurate tracking sunshine for solving the problem, improve sunshine utilization ratio; Antijamming capability is strong, and can adapt to complex environment, maintenance cost is low, and operation troubles rate is low.
For achieving the above object, technical scheme of the present invention is as follows:
Based on a sunshine apparatus for real time tracking of FPGA, comprise sunshine positioning system, topworks and power module, described sunshine positioning system to be passed with FPGA master control system by signal conditioning circuit and is connected; Described FPGA master control system connects topworks and terminal management system respectively; Described sunshine positioning system, topworks are all connected with power module with terminal management system; Described FPGA master control system comprises FPGA main control chip, and described FPGA main control chip is connected with crystal oscillator, JTAG download interface, FLASH chip, SDRAM chip, E2PROM chip, USB interface and display interface respectively; Described signal conditioning circuit comprises the filtering circuit of the influence factors such as the thermonoise of clutter in filtering bad border and system self, operational amplification circuit and binarization circuit topological structure, and described filtering circuit comprises low pass Ba Er Butterworth wave filter and high pass Chebyshev filter; Described terminal management system comprises wireless communication module and host computer, and terminal management system is connected with terminal by wireless communication module; Described sunshine positioning system comprises the translucent cover throwing sunlight, described translucent cover is positioned on platform, is convex lens in the middle part of described platform, and the convex lens periphery of described platform is provided with some photodiodes, described convex lens bottom is lens barrel, is provided with four-quadrant photo detector bottom described lens barrel; Described topworks comprises the mechanical transmission mechanism being carried out deceleration adjustment by multiple gear, described mechanical transmission mechanism is provided with the decelerating step motor one of the horizontal direction controlling solar panel, the decelerating step motor two controlling the vertical direction of solar panel and solar panel.
Further improvement, described FPGA main control chip is the EP4CE15F17C8 chip of Cyclone IV series; Described crystal oscillator is the active crystal oscillator of 50MHz; Described FLASH chip is formed by walk abreast FLASH chip and M25P64 serial FLASH chip set of AM29LV320; Described SDRAM chip is the SDRAM chip of IS61LV25616; Described E2PROM chip is the E2PROM chip of 24L04; Described USB interface is the USB interface that CH376 supports usb host pattern and USB slave mode.
Further improvement, described photodiode is 4, and distance between adjacent photodiode is equal.
Further improvement, be provided with in described host computer by gui tool design visual good, operate succinct operation control inerface.
Based on a sunshine method for real time tracking of FPGA, comprise the steps:
Step one) opening power module;
Step 2) Primary Location: the photodiode in sunshine positioning system accepts sunshine and produces voltage differences signal, described difference signal is by forming Primary Location signal input FPGA master control system after signal conditioning circuit amplification, filtering and binaryzation, FPGA master control system controls according to the Primary Location signal received the direction that decelerating step motor regulates sunshine positioning system, makes solar irradiation be mapped on four-quadrant photo detector;
Step 3) accurately to locate: four-quadrant photo detector produces photosignal after accepting sunshine, described photosignal is by forming accurate positioning signal input FPGA master control system after signal conditioning circuit amplification, filtering and binaryzation, FPGA master control system controls decelerating step motor one according to accurate positioning signal and decelerating step motor two regulates the direction of solar panel by mechanical transmission mechanism, makes the surface of contact that solar panel and sunshine keep maximum;
Step 4) systems inspection and control: by the wireless communication module in terminal management system, terminal or host computer being checked, sunshine implements the state of tracker internal operation, when sunshine implements tracker inside appearance mistake, correct.
Feature of the present invention and beneficial effect: the occasion being applicable to needs real-time automatic tracking solar irradiation, make the surface of contact that solar facilities and sunshine keep maximum, can realize the work efficiency that solar facilities keeps the highest, meanwhile, antijamming capability is strong, response speed for accident is faster, have and install simply, stable, efficiency is high, cost is low, is easy to the features such as maintenance.System is not only applicable to larger solar electrical energy generation, is suitable for household solar energy water heater etc. yet and utilizes solar facilities.
accompanying drawing illustrates:
a kind of sunshine method for real time tracking structural representation based on FPGA of Fig. 1 embodiment 1.
The structural representation of the sunshine positioning system of Fig. 2 embodiment 1;
Fig. 3 embodiment 1 take FPGA as the master control system structural representation of main control chip;
Topworks's schematic diagram of Fig. 4 embodiment 1.
Wherein: 1, sunshine positioning system; 2, signal conditioning circuit; 3, FPGA master control system; 4, topworks; 5, terminal management system; 6, power module; 7 terminals; 11, translucent cover; 12, photodiode; 13, convex lens; 14, lens barrel; 15, four-quadrant photo detector; 41, mechanical transmission mechanism; 42, decelerating step motor one; 43, decelerating step motor two; 44, solar panel.
specific implementation method
below in conjunction with accompanying drawing and example, the present invention is described in further details.
Embodiment 1
A kind of sunshine apparatus for real time tracking based on FPGA as Figure 1-4, comprises sunshine positioning system 1, topworks 4 and power module 6, and described sunshine positioning system 1 is passed with FPGA master control system 3 by signal conditioning circuit 2 and is connected; Described FPGA master control system 3 connects topworks 4 and terminal management system 5 respectively; Described sunshine positioning system 1, topworks 4 are all connected with power module 6 with terminal management system 5; Described FPGA master control system 3 comprises FPGA main control chip, and described FPGA main control chip is connected with crystal oscillator, JTAG download interface, FLASH chip, SDRAM chip, E2PROM chip, USB interface and display interface respectively; Described signal conditioning circuit 2 comprises the filtering circuit of the influence factors such as the thermonoise of clutter in filtering bad border and system self, operational amplification circuit and binarization circuit topological structure, and described filtering circuit comprises low pass Ba Er Butterworth wave filter and high pass Chebyshev filter; Described terminal management system 5 comprises wireless communication module and host computer, and terminal management system 5 is connected with terminal 7 by wireless communication module; Described sunshine positioning system 1 comprises the translucent cover 11 throwing sunlight, described translucent cover 11 is positioned on platform, be convex lens 13 in the middle part of described platform, convex lens 13 periphery of described platform is provided with 4 photodiodes 12, and distance between adjacent photodiode 12 is equal, described convex lens 13 bottom is lens barrel 14, is provided with four-quadrant photo detector 15 bottom described lens barrel 14; Described topworks 4 comprises the mechanical transmission mechanism 41 being carried out deceleration adjustment by multiple gear, described mechanical transmission mechanism 41 is provided with the decelerating step motor 1 of the horizontal direction controlling solar panel 44, the decelerating step motor 2 43 controlling the vertical direction of solar panel 44 and solar panel 44.Described FPGA main control chip is the EP4CE15F17C8 chip of Cyclone IV series; Described crystal oscillator is the active crystal oscillator of 50MHz; Described FLASH chip is formed by walk abreast FLASH chip and M25P64 serial FLASH chip set of AM29LV320; Described SDRAM chip is the SDRAM chip of IS61LV25616; Described E2PROM chip is the E2PROM chip of 24L04; Described USB interface is the USB interface that CH376 supports usb host pattern and USB slave mode.Be provided with in described host computer by gui tool design visual good, operate succinct operation control inerface.
System accepts sunshine according to the Primary Location device be made up of multiple photodiode 12 and produces voltage difference, by voltage difference, master control system controls decelerating step motor coarse azimuth, makes solar irradiation be mapped to based on the accurate positioning device of four-quadrant photo detector 15; The light intensity being mapped to detector four quadrants due to the highly sensitive of four-quadrant photo detector 15 and solar irradiation is different, thus detector will produce four different magnitudes of voltage of intensity, system controls decelerating step motor according to these magnitudes of voltage and mechanical transmission structure carries out fine adjustment, guarantees that solar panel 44 and sunshine keep maximum surface of contact.
In signal conditioning circuit 2, the filtering circuit that analog signal conditioner circuit 2 is combined with high pass Chebyshev filter by low pass Ba Er Butterworth wave filter and operational amplification circuit form, the influence factors such as the thermonoise that the clutter existed in wave filter filtering bad border and system self exist, simultaneously, the effective value that sunshine positioning system 1 produces is the requirement that mV step voltage can not meet follow-up signal process, then need to carry out signal and be enlarged into V step voltage.The binarization circuit topological structure that to enter with 16 high precision analogue conversion chip AD7606 by the voltage signal through analog circuitry processes be core, high-precision digital signal is the foundation that follow-up governor circuit controls whole system.
The core processor of whole system that to take FPGA as the master control system of main control chip be, the digital signal processing in sunshine real-time tracking system, PWM ripple produce and modulation, to store with host computer radio communication, solar panel 44 angular adjustment, data and transmission, JTAG download program etc. all based on master control system process.Master control system exports PWM ripple according to sensor input through the digital signal that high-precision signal modulate circuit 2 processes and carries out regulating in real time online to decelerating step motor, simultaneously, mechanical driving device is regulated by multiple gear reduction, reduces the error of adjustment process, realizes high precision and regulates.
Embodiment 2
Based on a sunshine method for real time tracking of FPGA, comprise the steps:
Step one) opening power module 6;
Step 2) Primary Location: the photodiode 12 in sunshine positioning system 1 accepts sunshine and produces voltage differences signal, described difference signal is amplified by signal conditioning circuit 2, form Primary Location signal input FPGA master control system 3 after filtering and binaryzation, FPGA master control system 3 controls according to the Primary Location signal received the direction that decelerating step motor regulates sunshine positioning system 1, makes solar irradiation be mapped on four-quadrant photo detector 15;
Step 3) accurately to locate: four-quadrant photo detector 15 produces photosignal after accepting sunshine, described photosignal is amplified by signal conditioning circuit 2, form accurate positioning signal input FPGA master control system 3 after filtering and binaryzation, FPGA master control system 3 controls decelerating step motor 1 according to accurate positioning signal and decelerating step motor 2 43 regulates the direction of solar panel 44 by mechanical transmission mechanism 41, makes solar panel 44 and sunshine keep maximum surface of contact;
Step 4) systems inspection and control: by the wireless communication module in terminal management system 5, terminal 7 or host computer being checked, sunshine implements the state of tracker internal operation, when sunshine implements tracker inside appearance mistake, correct.
The above embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (5)
1. based on a sunshine apparatus for real time tracking of FPGA, comprise sunshine positioning system, topworks and power module, it is characterized in that, described sunshine positioning system to be passed with FPGA master control system by signal conditioning circuit and is connected; Described FPGA master control system connects topworks and terminal management system respectively; Described sunshine positioning system, topworks are all connected with power module with terminal management system; Described FPGA master control system comprises FPGA main control chip, and described FPGA main control chip is connected with crystal oscillator, JTAG download interface, FLASH chip, SDRAM chip, E2PROM chip, USB interface and display interface respectively; Described signal conditioning circuit comprises the filtering circuit of the influence factors such as the thermonoise of clutter in filtering bad border and system self, operational amplification circuit and binarization circuit topological structure, and described filtering circuit comprises low pass Ba Er Butterworth wave filter and high pass Chebyshev filter; Described terminal management system comprises wireless communication module and host computer, and terminal management system is connected with terminal by wireless communication module; Described sunshine positioning system comprises the translucent cover throwing sunlight, described translucent cover is positioned on platform, is convex lens in the middle part of described platform, and the convex lens periphery of described platform is provided with some photodiodes, described convex lens bottom is lens barrel, is provided with four-quadrant photo detector bottom described lens barrel; Described topworks comprises the mechanical transmission mechanism being carried out deceleration adjustment by multiple gear, described mechanical transmission mechanism is provided with the decelerating step motor one of the horizontal direction controlling solar panel, the decelerating step motor two controlling the vertical direction of solar panel and solar panel.
2., as claimed in claim 1 based on the sunshine apparatus for real time tracking of FPGA, it is characterized in that, described FPGA main control chip is the EP4CE15F17C8 chip of Cyclone IV series; Described crystal oscillator is the active crystal oscillator of 50MHz; Described FLASH chip is formed by walk abreast FLASH chip and M25P64 serial FLASH chip set of AM29LV320; Described SDRAM chip is the SDRAM chip of IS61LV25616; Described E2PROM chip is the E2PROM chip of 24L04; Described USB interface is the USB interface that CH376 supports usb host pattern and USB slave mode.
3. as claimed in claim 1 based on the sunshine apparatus for real time tracking of FPGA, it is characterized in that, described photodiode is 4, and distance between adjacent photodiode is equal.
4., as claimed in claim 1 based on the sunshine apparatus for real time tracking of FPGA, it is characterized in that, be provided with in described host computer by gui tool design visual good, operate succinct operation control inerface.
5., based on a sunshine method for real time tracking of FPGA, it is characterized in that, comprise the steps:
Step one) opening power module;
Step 2) Primary Location: the photodiode in sunshine positioning system accepts sunshine and produces voltage differences signal, described difference signal is by forming Primary Location signal input FPGA master control system after signal conditioning circuit amplification, filtering and binaryzation, FPGA master control system controls according to the Primary Location signal received the direction that decelerating step motor regulates sunshine positioning system, makes solar irradiation be mapped on four-quadrant photo detector;
Step 3) accurately to locate: four-quadrant photo detector produces photosignal after accepting sunshine, described photosignal is by forming accurate positioning signal input FPGA master control system after signal conditioning circuit amplification, filtering and binaryzation, FPGA master control system controls decelerating step motor one according to accurate positioning signal and decelerating step motor two regulates the direction of solar panel by mechanical transmission mechanism, makes the surface of contact that solar panel and sunshine keep maximum;
Step 4) systems inspection and control: by the wireless communication module in terminal management system, terminal or host computer being checked, sunshine implements the state of tracker internal operation, when sunshine implements tracker inside appearance mistake, correct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129160.0A CN104865974A (en) | 2015-03-24 | 2015-03-24 | FPGA-based sunlight real-time tracking device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129160.0A CN104865974A (en) | 2015-03-24 | 2015-03-24 | FPGA-based sunlight real-time tracking device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104865974A true CN104865974A (en) | 2015-08-26 |
Family
ID=53911873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510129160.0A Pending CN104865974A (en) | 2015-03-24 | 2015-03-24 | FPGA-based sunlight real-time tracking device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104865974A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425676A (en) * | 2015-12-11 | 2016-03-23 | 浙江师范大学 | Embedded photoelectric signal processing and control system and usage method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794155A (en) * | 2009-12-31 | 2010-08-04 | 陕西科技大学 | Sunlight signal acquiring devices in high-precision tracking system |
| CN102150282A (en) * | 2008-07-03 | 2011-08-10 | 葛瑞佛德太阳能股份有限公司 | Solar collector assembly |
| CN202171748U (en) * | 2011-08-05 | 2012-03-21 | 上海理工大学 | Intelligent type solar tracking system |
| CN103034248A (en) * | 2012-12-14 | 2013-04-10 | 长安大学 | Sun tracking detection device made of compound convex lens combined with four-quadrant photoreceptor |
| CN202978772U (en) * | 2012-12-14 | 2013-06-05 | 长安大学 | Solar power generation device capable of automatically tracking sunlight |
| CN103151962A (en) * | 2013-03-22 | 2013-06-12 | 哈尔滨工业大学 | Solar power system with light-tracking sensor |
| CN103345263A (en) * | 2013-05-17 | 2013-10-09 | 湖南大学 | Sun position tracking sensor |
| US20140090691A1 (en) * | 2010-07-01 | 2014-04-03 | Sunpower Corporation | Thermal tracking for solar systems |
| CN103852158A (en) * | 2012-11-29 | 2014-06-11 | 西安大昱光电科技有限公司 | Solar light measurement apparatus for disk solar thermal generating tracking mechanism |
| CN204536917U (en) * | 2015-03-24 | 2015-08-05 | 浙江师范大学 | A kind of sunshine apparatus for real time tracking based on FPGA |
-
2015
- 2015-03-24 CN CN201510129160.0A patent/CN104865974A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102150282A (en) * | 2008-07-03 | 2011-08-10 | 葛瑞佛德太阳能股份有限公司 | Solar collector assembly |
| CN101794155A (en) * | 2009-12-31 | 2010-08-04 | 陕西科技大学 | Sunlight signal acquiring devices in high-precision tracking system |
| US20140090691A1 (en) * | 2010-07-01 | 2014-04-03 | Sunpower Corporation | Thermal tracking for solar systems |
| CN202171748U (en) * | 2011-08-05 | 2012-03-21 | 上海理工大学 | Intelligent type solar tracking system |
| CN103852158A (en) * | 2012-11-29 | 2014-06-11 | 西安大昱光电科技有限公司 | Solar light measurement apparatus for disk solar thermal generating tracking mechanism |
| CN103034248A (en) * | 2012-12-14 | 2013-04-10 | 长安大学 | Sun tracking detection device made of compound convex lens combined with four-quadrant photoreceptor |
| CN202978772U (en) * | 2012-12-14 | 2013-06-05 | 长安大学 | Solar power generation device capable of automatically tracking sunlight |
| CN103151962A (en) * | 2013-03-22 | 2013-06-12 | 哈尔滨工业大学 | Solar power system with light-tracking sensor |
| CN103345263A (en) * | 2013-05-17 | 2013-10-09 | 湖南大学 | Sun position tracking sensor |
| CN204536917U (en) * | 2015-03-24 | 2015-08-05 | 浙江师范大学 | A kind of sunshine apparatus for real time tracking based on FPGA |
Non-Patent Citations (4)
| Title |
|---|
| 侯长来: "《太阳跟踪装置与技术》", 30 April 2012 * |
| 周鹏，等: "《精通LabVIEW信号处理》", 31 July 2013, 北京：清华大学出版社 * |
| 林秩盛: "《信号与线性系统》", 31 August 2008, 北京：清华大学出版社 * |
| 韩丽英,崔海霞: "《光电变换与检测技术》", 30 November 2010 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425676A (en) * | 2015-12-11 | 2016-03-23 | 浙江师范大学 | Embedded photoelectric signal processing and control system and usage method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101661295B (en) | Solar automatic tracking and positioning device | |
| CN101662241B (en) | Sun orientation automatic tracking method and device used for photovoltaic power generation | |
| CN202548648U (en) | Solar automatic tracking system | |
| CN103901900B (en) | A kind of comprehensive autotracking unit of solar energy | |
| CN102591359B (en) | Solar tracking controller | |
| CN103151962A (en) | Solar power system with light-tracking sensor | |
| CN206557616U (en) | A kind of photovoltaic autotracking power generation monitoring system of Internet of Things framework | |
| CN103472856B (en) | A kind of three-dimensional photovoltaic screen energy battery solar automatic tracking system | |
| CN102566601B (en) | Sun tracking sensor | |
| CN204536917U (en) | A kind of sunshine apparatus for real time tracking based on FPGA | |
| CN205986745U (en) | Solar cell panel catches light and automatic dust pelletizing system | |
| CN101290523A (en) | Sun tracking system | |
| CN111833212B (en) | Operation and maintenance management system and method for solar photovoltaic power station | |
| CN104865974A (en) | FPGA-based sunlight real-time tracking device and method | |
| CN101777856A (en) | Photovoltaic tracking device using photosensitive difference and network-based monitoring method | |
| CN103135600A (en) | Control system of heliostat | |
| CN203782788U (en) | Water collecting device for solar power station | |
| CN207399140U (en) | A kind of reflection-type slot light collection cogeneration system | |
| CN105022415A (en) | Intelligent sun tracking system | |
| CN103197690B (en) | A kind of solar electrical energy generation sensor of following spot | |
| CN203054617U (en) | Solar panel automatic control steering device | |
| CN104679036A (en) | Solar tracking device based on single chip microcomputer | |
| CN102183965B (en) | Solar tracking and positioning device and method based on spherical sensor | |
| CN206178483U (en) | A automatic tracking system for sun orbit | |
| CN205080440U (en) | Automatic sun -tracking system based on optical image processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |