CN106642749A - Trough type solar heat collector based on grid photoelectric sensing effect and position sensor thereof - Google Patents
Trough type solar heat collector based on grid photoelectric sensing effect and position sensor thereof Download PDFInfo
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- CN106642749A CN106642749A CN201710022907.1A CN201710022907A CN106642749A CN 106642749 A CN106642749 A CN 106642749A CN 201710022907 A CN201710022907 A CN 201710022907A CN 106642749 A CN106642749 A CN 106642749A
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- grid
- optoelectronic induction
- solar heat
- collector
- position sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/20—Arrangements for controlling solar heat collectors for tracking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention belongs to the technical field of position sensors, in particular to a position sensor of a trough type solar heat collector based on a grid photoelectric sensing effect. The position sensor comprises a double-sided grid photoelectric sensor, a current/voltage amplifier, a data acquisition processor, a microcontroller and an external plug. The double-sided grid photoelectric sensor is connected to the current/voltage amplifier through the microcontroller, and the current/voltage amplifier is connected to the external plug through the data acquisition processor. Compared with the prior art, based on the grid photoelectric sensing effect, measurement and inverse analysis are directly performed on a spot distributing characteristic of a focal plane in real time and comparative analysis and calculation are performed on a theoretical spot, and real time positional deviation is calculated to obtain a tracking strategy of the heat collector, so that influence on the tracking precision by outside factors is avoided, and the tracking precision of the system is improved.
Description
Technical field
The invention belongs to position sensor technical field, more particularly to a kind of slot type based on grid optoelectronic induction effect is too
Positive energy heat collector and its position sensor.
Background technology
At present, the position sensing of slot light collection heat collector, is mainly included using obliquity sensor, is turned using pulse or motor
The method such as momentum is accumulative.The position sensor can provide control signal for the tracing control of groove type heat collector transmission system.Its
In the angle of inclination of heat collector is measured based on the obliquity sensor of capacitive technologies, and while by position of sun to mesh
Mark angle is calculated, and the direction of motion and the motion of driver are contrasted and determined by the difference of current location and angle on target
Amount, to realize tracking of the concentrator to the sun, the obliquity sensor that the method is used by system periphery electromagnetic environmental impact compared with
Greatly, therefore heat collector tracking accuracy can be affected.Based on the accumulative heat collector tracking mode of pulse and amount of motor rotation, then exist
The problems such as electricity memory loss, accumulated error, tracking accuracy is not high.
In view of this, it is necessory to provide a kind of trough type solar heat-collector based on grid optoelectronic induction effect and its position
Sensor is put, it is based on grid optoelectronic induction effect, the real-time hot spot distribution character of direct focal plane is measured and inverting point
Analysis, and calculating is analyzed with theoretical hot spot, real time position deviation is calculated, obtain the tracking strategy of heat collector, it is to avoid
Impact of the extraneous factor to tracking accuracy, improves systematic tracking accuracy.
The content of the invention
An object of the present invention is：For the deficiencies in the prior art, and propose a kind of based on grid optoelectronic induction effect
The trough type solar heat-collector position sensor answered, it is based on grid optoelectronic induction effect, the real-time hot spot point of direct focal plane
Cloth characteristic is measured and back analysis, and is analyzed calculating with theoretical hot spot, calculates real time position deviation, is collected
The tracking strategy of hot device, it is to avoid impact of the extraneous factor to tracking accuracy, improves systematic tracking accuracy.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
A kind of trough type solar heat-collector position sensor based on grid optoelectronic induction effect, including two-sided grid photoelectricity
Inductor, current/voltage amplifier, data acquisition and procession device, microcontroller and external plug, the two-sided grid light inductance
Device is answered to be connected with the current/voltage amplifier by the microcontroller, the current/voltage amplifier is by the data
Collection is connected with processor with the external plug.
Improved based on a kind of of the trough type solar heat-collector position sensor of grid optoelectronic induction effect as the present invention,
The two-sided grid photoelectric sensor includes upper strata optoelectronic induction face, lower floor's optoelectronic induction face and is arranged at the upper strata light inductance
Answer the insulated thermal insulating layer between face and lower floor's optoelectronic induction face, the upper strata optoelectronic induction face and lower floor's optoelectronic induction
Face is formed by the arrangement of several grid points, and each described grid point is independently by microcontroller connecting wire beam and described micro-
Controller is connected with the current/voltage amplifier, and for the data acquisition and procession device voltage x current array signal is provided.
Improved based on a kind of of the trough type solar heat-collector position sensor of grid optoelectronic induction effect as the present invention,
The grid point at the point midway of the two-sided grid photoelectric sensor is zero-bit grid, centered on the zero-bit grid
Width form hot spot core space for the grid region of D, the both sides of the hot spot core space formed respectively left hot spot epitaxial region and
Right hot spot epitaxial region.
Improved based on a kind of of the trough type solar heat-collector position sensor of grid optoelectronic induction effect as the present invention,
The width of the left hot spot epitaxial region and the right hot spot epitaxial region is all higher than D.
Improved based on a kind of of the trough type solar heat-collector position sensor of grid optoelectronic induction effect as the present invention,
Model C8051FO2O of the microcontroller.
Improved based on a kind of of the trough type solar heat-collector position sensor of grid optoelectronic induction effect as the present invention,
The material of the insulated thermal insulating layer is ceramic fibre, glass fibre, asbestos or rock wool.
Relative to prior art, in the present invention, two-sided grid photoelectric sensor sensing is incident upon the light intensity on its surface, and leads to
Cross photoelectric effect and be converted into electric current (voltage) signal, be transferred to current/voltage from the current and voltage signals of each grid point and put
Big device, and through the process of data acquisition and procession device, simultaneously inverting obtains hot spot distribution situation, the hot spot distribution according to obtained by calculating
Feature and the deviation of hot spot distribution characteristics under accurate tracking, calculate the direction of motion and motion compensation quantity of transmission system, and defeated
Go out to control model to drive apparatus, drive heat collector to target location.That is, the present invention is real-time by direct focal plane
Hot spot distribution character is measured and back analysis, and is analyzed calculating with theoretical hot spot, calculates real time position deviation,
Obtain the tracking strategy of heat collector, it is to avoid impact of the extraneous factor to tracking accuracy, improve systematic tracking accuracy.
Further object is that a kind of trough type solar heat-collector based on grid optoelectronic induction effect is provided,
Including slot-type optical collector main body and the position sensor being installed in the slot-type optical collector main body, the position sensor is this
The described trough type solar heat-collector position sensor based on grid optoelectronic induction effect of invention, and the two-sided grid light
Electric inductor is installed on the focal plane of the slot-type optical collector main body and puts down with the plane of the opening of the slot-type optical collector main body
OK.
Improved based on a kind of of the trough type solar heat-collector of grid optoelectronic induction effect as the present invention, the two-sided grid
The upper strata optoelectronic induction of lattice photoelectric sensor is faced outwardly, and lower floor's optoelectronic induction of the two-sided grid photoelectric sensor is facing to institute
State the reflecting surface of slot-type optical collector main body.
Improved based on a kind of of the trough type solar heat-collector of grid optoelectronic induction effect as the present invention, the zero-bit grid
The dead in line of the installation site of lattice and the slot-type optical collector main body, the hot spot core space is also associated with endothermic tube.
The heat collector of the present invention can avoid extraneous factor to tracking as a result of position sensor of the present invention
The impact of precision, improves systematic tracking accuracy, improves the accuracy of concentrator tracking, and reduces angular surveying class sensor
Caused tracking accuracy not high by external environmental interference and the problems such as signal fluctuation.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structure principle chart of two-sided grid photoelectric sensor in the embodiment of the present invention 1.
Fig. 3 is the top view of the schematic diagram of two-sided grid photoelectric sensor in the embodiment of the present invention 1.
Fig. 4 is the structural representation of the embodiment of the present invention 2.
Specific embodiment
The present invention and its advantage are described in further detail below with reference to specific embodiment, but, this
Bright specific embodiment is not limited to this.
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of trough type solar heat-collector based on grid optoelectronic induction effect that the present invention is provided
Position sensor, including two-sided grid photoelectric sensor 1, current/voltage amplifier 4, data acquisition and procession device 3, microcontroller
Device 5 and external plug 2, two-sided grid photoelectric sensor 1 is connected by microcontroller 5 with current/voltage amplifier 4, electric current/electricity
Pressure amplifier 4 is connected by data acquisition and procession device 3 with external plug 2.
The two-sided sensing of grid photoelectric sensor 1 is incident upon the light intensity on its surface, and is converted into electric current (electricity by photoelectric effect
Pressure) signal, be transferred to current/voltage amplifier 4 from the current and voltage signals of each grid point 11, and through data acquisition with
The process of processor 3 and inverting acquisition hot spot distribution situation, for drive system control strategy is provided.External plug 2 is data acquisition
Jointing with processing module 3 and driving control system carry out signal transmission, is designed according to communication protocol with mode.Number
According to collection and model TMS320 of processing module 3.
Two-sided grid photoelectric sensor 1 includes upper strata optoelectronic induction face 6, lower floor's optoelectronic induction face 9 and is arranged at upper strata light
Insulated thermal insulating layer 7 between electric induction face 6 and lower floor's optoelectronic induction face 9, i.e., two-sided grid photoelectric sensor 1 is tied with sandwich
Structure, insulated thermal insulating layer 7 can avoid the electric current (voltage) of two interlayers from disturbing, upper strata optoelectronic induction face 6 and lower floor's optoelectronic induction face 9
Formed by several arrangements of grid point 11, each grid point 11 can sense irradiation light intensity thereon, and be converted to electric current (electricity
Pressure) signal, each grid point 11 is independently by microcontroller connecting wire beam 8 and microcontroller 5 and current/voltage amplifier
4 are connected, and are that data acquisition and procession device 3 provides voltage x current array signal.Upper strata optoelectronic induction face 6, lower floor's optoelectronic induction face 9
It is shaped like narrow grid type optoelectronic induction material (such as polypyrrole, polyphenylene sulfide, polyaniline, polythiophene), upper strata optoelectronic induction face 6
Region be directly facing the sun, solar irradiation situation under the conditions of test non-concentrating, reflection of the lower floor's optoelectronic induction face 9 towards slot-type optical collector
Face, launches concentrator distribution characteristics of the light on diverse location and tests by grid photoelectric sensor 1.Each grid point
11 width is required according to measuring accuracy and processing technology is determined, and reduces raster width, can lift the discretization of hot spot
Quantity, and improving measurement accuracy.
Grid point at the point midway of two-sided grid photoelectric sensor 1 is zero-bit grid 10, in being with zero-bit grid 10
The width of the heart forms hot spot core space 13 for the grid region of D, and the both sides of hot spot core space 13 form respectively left hot spot epitaxial region
12 and right hot spot epitaxial region 14.Left hot spot epitaxial region 12 and right hot spot epitaxial region 14 are used to judge that actual hot spot deviates core space 13
Calculating check area.
The width of left hot spot epitaxial region 12 and right hot spot epitaxial region 14 is all higher than D, to meet two-sided grid photoelectric sensor 1
Seizure and the judgement to beam pattern and position to hot spot.
Model C8051FO2O of microcontroller.The microcontroller of the model has the following advantages：64 I/O mouths, at a high speed,
Pipeline organization, full speed, the system debug interface of non-intrusion type, 88 passage ADC, band PGA and analog multichannel switch, two 12
Position DAC, with programmable data update mode, the external data memory interface in addressable 64K byte addresses space, 5 lead to
16 is locator, the programmable counter/Timer Array with 5 seizures/comparison modules, and it is fixed to be provided with house dog
When device, VDD monitors and temperature sensor.
The material of insulated thermal insulating layer 7 is ceramic fibre, glass fibre, asbestos or rock wool.
Current/voltage amplifier 4 is amplified the current signal of acquisition, passes to data acquisition and procession device 3, data
Collection is calculated the CURRENT DISTRIBUTION of each grid point 11 on two-sided grid photoelectric sensor 1 with processor 3, and by integration
Calculate, inverting is carried out to hot spot distribution and the position on the two-sided surface of grid photoelectric sensor 1, analyze current hot spot and current theory
The difference in distribution of hot spot, and hot spot core space 13 can flow accounting etc., and for transmission system pursuit movement strategy is provided.It is of the invention straight
Connect hot spot distributional analysis and obtained heat collector tracking strategy, improve the accuracy of concentrator tracking, and reduce angle survey
Amount class sensor is caused tracking accuracy not high and the problems such as signal fluctuation by external environmental interference.
Embodiment 2
Present embodiments provide a kind of trough type solar heat-collector based on grid optoelectronic induction effect, including slot light collection
Device main body 17 and the position sensor being installed in slot-type optical collector main body 17, position sensor is the present invention based on grid light
The trough type solar heat-collector position sensor of electric induction effect, and two-sided grid photoelectric sensor 1 is installed on slot light collection
It is on the focal plane of device main body 17 and parallel with the plane of the opening 18 of slot-type optical collector main body 17.
The upper strata optoelectronic induction face 6 of two-sided grid photoelectric sensor 1 outwardly, faces the sun, obtains real-time surface sun spoke
According to amount, for testing the solar irradiation of current tilt angle bottom incline, it can be estimated to current solar irradiation situation,
And the reference criterion with the hot spot distributional analysis of lower floor's optoelectronic induction face 9 is formulated as heat collector tracking strategy, its parameter can be used
Can be checked and corrected in the concentrator flare distribution characteristics that lower floor's optoelectronic induction face 9 obtains is calculated, improves
Sensor accuracy.It is also possible to according to the power of lateral surface inductor overall signal, judge when light condenser position and target position
Offset direction when deviateing farther out is put, the gap and moving direction of current heat collector tracing positional and target location is judged.It is two-sided
Reflecting surface of the lower floor's optoelectronic induction face 9 of grid photoelectric sensor 1 towards slot-type optical collector main body 17.Lower floor's optoelectronic induction face 9
Concentrator reflection light is intercepted and captured, the reflection light of the reflecting surface from slot-type optical collector main body 17, slot-type optical collector main body is received
The reflection light of 17 reflecting surface forms hot spot, the electricity of each grid point 11 in lower floor's optoelectronic induction face 9 in lower floor's optoelectronic induction face 9
Light intensity situation at the stream voltage signal direct reaction node, data acquisition and procession device 3 is received from lower floor's optoelectronic induction
The current and voltage signals of the discretization of face 9, with inverting when the light distribution situation on front focal plane and position, and can combine current reason
By the feature of hot spot, the gap of heat collector current location and ideal position is calculated, and tracking action signal is sent to transmission system,
Adjustment heat collector to target location rotates.
The installation site of zero-bit grid 10 and the dead in line of slot-type optical collector main body 17, hot spot core space 13 is also associated with
Endothermic tube 15.
Under photoelectric action, each grid point 11 realizes that electric current (voltage) is exported, and by electric current (voltage) amplifier
Data acquisition and procession device 3 is conveyed to, data acquisition and procession device 3 obtains electric current (voltage) signal of the position of each grid 11, and
The hot spot distribution characteristics being finally inversed by focal plane, the hot spot distribution characteristics according to obtained by calculating is special with hot spot distribution under accurate tracking
The deviation levied, calculates the direction of motion and motion compensation quantity of transmission system, and output control model to drive apparatus, drives collection
Hot device is to target location.
The heat collector of the present invention can avoid extraneous factor to tracking accuracy as a result of the position sensor of the present invention
Impact, improve systematic tracking accuracy, improve the accuracy of concentrator tracking, and reduce angular surveying class sensor by outer
Boundary's environmental disturbances and cause tracking accuracy not high and the problems such as signal fluctuation.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, specific embodiment disclosed and described above is the invention is not limited in, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.Although additionally, this specification
Used in some specific terms, but these terms are merely for convenience of description, do not constitute any restriction to the present invention.
Claims (9)
1. a kind of trough type solar heat-collector position sensor based on grid optoelectronic induction effect, it is characterised in that including double
Face grid photoelectric sensor, current/voltage amplifier, data acquisition and procession device, microcontroller and external plug, it is described two-sided
Grid photoelectric sensor is connected by the microcontroller with the current/voltage amplifier, and the current/voltage amplifier leads to
Cross the data acquisition and procession device to be connected with the external plug.
2. the trough type solar heat-collector position sensor based on grid optoelectronic induction effect according to claim 1, its
It is characterised by, the two-sided grid photoelectric sensor includes upper strata optoelectronic induction face, lower floor's optoelectronic induction face and is arranged at described
Insulated thermal insulating layer between upper strata optoelectronic induction face and lower floor's optoelectronic induction face, the upper strata optoelectronic induction face with it is described under
Layer optoelectronic induction face is formed by several grid point arrangements, and each described grid point is independently by microcontroller connecting wire
Beam and the microcontroller are connected with the current/voltage amplifier, and for the data acquisition and procession device voltage x current is provided
Array signal.
3. the trough type solar heat-collector position sensor based on grid optoelectronic induction effect according to claim 2, its
It is characterised by, the grid point at the point midway of the two-sided grid photoelectric sensor is zero-bit grid, with the zero-bit
Width centered on grid forms hot spot core space for the grid region of D, and the both sides of the hot spot core space form respectively left light
Spot epitaxial region and right hot spot epitaxial region.
4. the trough type solar heat-collector position sensor based on grid optoelectronic induction effect according to claim 3, its
It is characterised by, the width of the left hot spot epitaxial region and the right hot spot epitaxial region is all higher than D.
5. the trough type solar heat-collector position sensor based on grid optoelectronic induction effect according to claim 1, its
It is characterised by, model C8051FO2O of the microcontroller.
6. the trough type solar heat-collector position sensor based on grid optoelectronic induction effect according to claim 2, its
It is characterised by, the material of the insulated thermal insulating layer is ceramic fibre, glass fibre, asbestos or rock wool.
7. a kind of trough type solar heat-collector based on grid optoelectronic induction effect, it is characterised in that including slot-type optical collector master
Body and the position sensor being installed in the slot-type optical collector main body, the position sensor is any one of claim 1 to 6
The described trough type solar heat-collector position sensor based on grid optoelectronic induction effect, and the two-sided grid light inductance
Device is answered to be installed on the focal plane of the slot-type optical collector main body and parallel with the plane of the opening of the slot-type optical collector main body.
8. the trough type solar heat-collector based on grid optoelectronic induction effect according to claim 7, it is characterised in that institute
The upper strata optoelectronic induction for stating two-sided grid photoelectric sensor is faced outwardly, lower floor's optoelectronic induction of the two-sided grid photoelectric sensor
Facing to the reflecting surface of the slot-type optical collector main body.
9. the trough type solar heat-collector based on grid optoelectronic induction effect according to claim 7, it is characterised in that institute
The installation site of zero-bit grid and the dead in line of the slot-type optical collector main body are stated, the hot spot core space is also associated with heat absorption
Pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022907.1A CN106642749B (en) | 2017-01-12 | 2017-01-12 | A kind of trough type solar heat-collector and its position sensor based on grid optoelectronic induction effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022907.1A CN106642749B (en) | 2017-01-12 | 2017-01-12 | A kind of trough type solar heat-collector and its position sensor based on grid optoelectronic induction effect |
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| CN106642749A true CN106642749A (en) | 2017-05-10 |
| CN106642749B CN106642749B (en) | 2018-09-14 |
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| CN201710022907.1A Expired - Fee Related CN106642749B (en) | 2017-01-12 | 2017-01-12 | A kind of trough type solar heat-collector and its position sensor based on grid optoelectronic induction effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113298762A (en) * | 2021-05-07 | 2021-08-24 | 威海世高光电子有限公司 | flare detection method |
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| CN2205525Y (en) * | 1994-02-25 | 1995-08-16 | 北京有色金属研究总院 | Automatic tracing device for solar energy collector |
| CN1335471A (en) * | 2000-07-26 | 2002-02-13 | 青岛大学 | Automatic sun tracking method for heat collector in solar water heater |
| CN102968130A (en) * | 2012-11-22 | 2013-03-13 | 宁夏光合能源科技有限公司 | Opened/closed-loop control heliostat with real-time reflected light spot position adjusting function |
| WO2013057333A1 (en) * | 2011-10-18 | 2013-04-25 | Soltec Energías Renovables, Sl | Method for orienting solar collectors having a non-vertical rotary axle |
| CN206504490U (en) * | 2017-01-12 | 2017-09-19 | 广东五星太阳能股份有限公司 | A kind of trough type solar heat-collector and its position sensor based on grid optoelectronic induction effect |
-
2017
- 2017-01-12 CN CN201710022907.1A patent/CN106642749B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205525Y (en) * | 1994-02-25 | 1995-08-16 | 北京有色金属研究总院 | Automatic tracing device for solar energy collector |
| CN1335471A (en) * | 2000-07-26 | 2002-02-13 | 青岛大学 | Automatic sun tracking method for heat collector in solar water heater |
| WO2013057333A1 (en) * | 2011-10-18 | 2013-04-25 | Soltec Energías Renovables, Sl | Method for orienting solar collectors having a non-vertical rotary axle |
| CN102968130A (en) * | 2012-11-22 | 2013-03-13 | 宁夏光合能源科技有限公司 | Opened/closed-loop control heliostat with real-time reflected light spot position adjusting function |
| CN206504490U (en) * | 2017-01-12 | 2017-09-19 | 广东五星太阳能股份有限公司 | A kind of trough type solar heat-collector and its position sensor based on grid optoelectronic induction effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113298762A (en) * | 2021-05-07 | 2021-08-24 | 威海世高光电子有限公司 | flare detection method |
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