CN106444866A - Automatic tracking system of solar collector based on Bridge - Google Patents
Automatic tracking system of solar collector based on Bridge Download PDFInfo
- Publication number
- CN106444866A CN106444866A CN201611114833.6A CN201611114833A CN106444866A CN 106444866 A CN106444866 A CN 106444866A CN 201611114833 A CN201611114833 A CN 201611114833A CN 106444866 A CN106444866 A CN 106444866A
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- Prior art keywords
- photoconductive resistance
- resistance
- solar thermal
- thermal collector
- diode
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- 230000003068 static effect Effects 0.000 claims abstract 3
- 230000005611 electricity Effects 0.000 claims description 8
- 108091007548 scavenger receptor class K Proteins 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
Abstract
The invention discloses an automatic tracking system of a solar collector based on a bridge, which comprises a photosensitive resistor R1, a photosensitive resistor R2, a photosensitive resistor R3, a photosensitive resistor R4, an intermediate relay KA1, an intermediate relay KA2, a single chip AT89C51, a chip ULN2003A, a stepper motor with M. The photosensitive resistor R1 and the photosensitive resistor R3 are installed at the same end of the solar collector, and the photosensitive resistor R2 and the photosensitive resistor R4 are installed at the other end of the solar collector and compose the bridge with the photosensitive resistor R1 and the photosensitive resistor R3. The output voltages of the bridge are added at both ends of the intermediate relay KA1 and the intermediate relay KA2. The single-chip AT89C51 and the chip ULN2003A jointly control the rotation and static of the stepper motor. As the system can control the state of the normally open contact of the intermediate relay KA1 and the intermediate relay KA2 according to the polarity of the bridge output voltage, so as to control the positive and negative rotation, stall, static of the stepper motor M, so the control of the system to the solar collector has better stability and high sensitivity.
Description
Technical field
The present invention relates to a kind of solar thermal collector automatic tracking system is and in particular to a kind of solar energy collection based on electric bridge
Hot device automatic tracking system.
Background technology
Existing solar thermal collector is flat-plate collector and fixing vacuum tube collector；Both solar thermal collectors
It is difficult to make full use of the sunlight being continually changing angle, if adding automatic tracking system, solar energy to solar thermal collector
Heat collector just can be carried out from motion tracking according to the height of the sun or thing orientation, so that solar thermal collector acquisition is continued higher
Heat-collecting effect；In consideration of it, at present in the urgent need to developing a kind of solar thermal collector automatic tracking system.
Content of the invention
For above-mentioned problems of the prior art and defect, it is an object of the invention to provide a kind of solar energy heating
Device automatic tracking system, to improve the Heat-collecting effect of solar thermal collector.
The technical solution adopted for the present invention to solve the technical problems is that a kind of solar thermal collector based on electric bridge is automatic
Tracking system, including DC source VCC, photoconductive resistance R1, photoconductive resistance R2, photoconductive resistance R3, photoconductive resistance R4, fixed value resistance
R5, fixed value resistance R6, auxiliary reclay KA1, auxiliary reclay KA2, diode D1, diode D2, SR K, single-chip microcomputer
AT89C51, chip ULN2003A, motor M；
It is characterized in that, described photoconductive resistance R1 and photoconductive resistance R3 is installed on same one end of solar thermal collector, photoconductive resistance
R2 and photoconductive resistance R4 is installed on the other end of solar thermal collector and constitutes electric bridge, electricity with photoconductive resistance R1 and photoconductive resistance R3
The output voltage of bridge is added in auxiliary reclay KA1 and the two ends of auxiliary reclay KA2 respectively, and is respectively provided with output circuit
There is diode D1 and D2, AT89C51 system sends rotating pulse signal according to program, chip ULN2003A accepts pulse letter
Number and be directly output to motor after signal is amplified, motor is carried out according to the sequencing accepting pulse signal arrival
Forward or reverse, thus adjust the orientation of solar thermal collector.
A kind of operation principle of the solar thermal collector automatic tracking system based on electric bridge of the present invention is：
The light intensity being subject to when one end of photoconductive resistance R1 and photoconductive resistance R3 place solar thermal collector be more than photoconductive resistance R2 and
During the light intensity that one end of photoconductive resistance R4 place solar thermal collector is subject to, bridge output voltage conducting diode D1, diode
D2 ends, and auxiliary reclay KA1 is energized, the normally open contact closure of auxiliary reclay KA1, the P0.0/AD0 of AT89C51 system
It is in low level, thus AT89C51 system outfan P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 send out according to program
Go out and rotate forward pulse signal, rotate forward pulse signal and be sent to motor through chip ULN2003A, motor is according to pulse signal
Solar thermal collector is driven to be rotated forward, the orientation of adjustment solar thermal collector makes the photoconductive resistance of solar thermal collector two ends be subject to
Light intensity identical；With the light intensity that is subject to of one end of photoconductive resistance R1 and photoconductive resistance R3 place solar thermal collector light should be less than
During the light intensity that one end of quick resistance R2 and photoconductive resistance R4 place solar thermal collector is subject to, bridge output voltage conducting diode
D2, diode D1 end, and auxiliary reclay KA2 is energized, the normally open contact closure of auxiliary reclay KA2, AT89C51 system
P0.1/AD1 is in low level, thus AT89C51 system outfan P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 root
Send inversion pulse signal according to program, inversion pulse signal is sent to motor through chip ULN2003A, motor according to
Pulse signal is inverted, and the orientation of adjustment solar thermal collector makes the light intensity phase that the photoconductive resistance of solar thermal collector two ends is subject to
With；When the light intensity that one end of photoconductive resistance R1 and photoconductive resistance R3 place solar thermal collector is subject to is equal to photoconductive resistance R2 and light
During the light intensity that one end of quick resistance R4 place solar thermal collector is subject to, bridge output voltage is zero, diode D1 and diode
D2 can not turn on, and the P0.0/AD0 port of AT89C51 system and P0.1/AD1 port are all in high level state, single-chip microcomputer
AT89C51 outfan P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 no longer send pulse signal, stepping electricity according to program
Machine stops or remains stationary state；
The invention has the beneficial effects as follows, the solar thermal collector equipped with the present invention can deviate solar thermal collector in the sun
Its orientation of adjust automatically during illuminator, the illuminator making solar thermal collector, all the time just to the sun, effectively improves solar energy heating
The collecting efficiency of device.
Brief description
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is a kind of solar thermal collector automatic tracking system schematic diagram based on electric bridge of the present invention.
Fig. 2 is a kind of solar thermal collector automatic tracking system based on electric bridge of the present invention in the paraboloid trough type vertical shaft sun
Application schematic diagram in energy heat collector.
Specific embodiment
In order to better understand the technological means of the present invention, and can be practiced according to the content of description, and
In order to the above and other objects, features and advantages of the present invention can be become apparent, below especially exemplified by preferred embodiment, and join
Close accompanying drawing, describe in detail as follows.
Fig. 2 is a kind of solar thermal collector automatic tracking system based on electric bridge of the present invention in the paraboloid trough type vertical shaft sun
Application schematic diagram in energy heat collector, including photoconductive resistance R2（1）, reflecting mirror（2）, vacuum tube（3）, photoconductive resistance R4（4）, after
Fixed support（5）, vacuum pipe holder II（6）, cold water pipe（7）, live spindle（8）, photoconductive resistance R3（9）, front fixed support
（10）, photoconductive resistance R1（11）, hot-water line（12）, vacuum pipe holder I（13）, shaft coupling（14）, control unit（15）, stepping electricity
Machine（16）；Described hot-water line（12）And cold water pipe（7）It is respectively arranged in vacuum tube（3）Left and right two ends, described vacuum tube（3）Peace
It is contained in vacuum pipe holder I（13）With vacuum pipe holder II（6）On, described vacuum pipe holder I（13）With vacuum pipe holder II（6）Peace
It is contained in live spindle（8）On, described photoconductive resistance R2（1）With photoconductive resistance R4（4）It is installed on reflecting mirror（2）Left end, described
Photoconductive resistance R1（11）With photoconductive resistance R3（9）It is installed on reflecting mirror（2）Right-hand member, described reflecting mirror（2）It is arranged on rotation master
Axle（8）On, described live spindle（8）It is arranged on front fixed support（10）With rear fixed support（5）On, described control unit
（15）, motor（16）It is arranged on reflecting mirror（2）Front end；Described shaft coupling（14）For connecting live spindle（8）And step
Stepper motor（16）Output shaft.
Fig. 1 is a kind of solar thermal collector automatic tracking system schematic diagram based on electric bridge of the present invention, photosensitive described in Fig. 2
Resistance R1（11）, photoconductive resistance R2（1）, photoconductive resistance R3（9）, photoconductive resistance R4（4）Constitute the electric bridge of automatic tracking system, and
And photoconductive resistance R1（11）, photoconductive resistance R2（1）, photoconductive resistance R3（9）, photoconductive resistance R4（4）Specification identical and first
Beginning resistance is R, control unit described in Fig. 2（15）Including DC source VCC, AT89C51 system, fixed value resistance R5, definite value
Resistance R6, auxiliary reclay KA1, auxiliary reclay KA2, diode D1, diode D2 and SR K；
If the voltage swing of DC source VCC is in electric bridge, photoconductive resistance R1（11）, photoconductive resistance R2（1）, photoconductive resistance
R3（9）, photoconductive resistance R4（4）Change in resistance amount under light illumination is respectively, and, then：；
As photoconductive resistance R1（11）With photoconductive resistance R3（9）The light intensity that is subject to of one end be more than photoconductive resistance R2（1）With photosensitive electricity
Resistance R4（4）One end be subject to light intensity when,, from the unidirectional general character of diode, diode
D1 conducting and diode D2 cut-off, auxiliary reclay KA1 is energized and so that its normally open contact is closed, the P0.0/ of AT89C51 system
AD0 is in low level, thus AT89C51 system outfan P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 are according to journey
Sequence sends rotating forward pulse signal, rotates forward pulse signal and is sent to motor through chip ULN2003A（16）, motor（16）
Live spindle is driven according to pulse signal（8）Rotate forward, work as live spindle（8）Rotate to the sun in illuminator（2）The plane of symmetry on
When, illuminator（2）The light intensity that two ends photoconductive resistance is subject to is identical,, diode D1 and diode D2
All end, the P0.0/AD0 port of AT89C51 system and P0.1/AD1 port are all in high level state, single-chip microcomputer
AT89C51 outfan P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 no longer send pulse signal, stepping electricity according to program
Machine（16）Stall；Together should photoconductive resistance R1（11）With photoconductive resistance R3（9）The light intensity that is subject to of one end be less than photoconductive resistance R2
（1）With photoconductive resistance R4（4）One end be subject to light intensity when,, motor（16）According to pulse
Signal drives live spindle（8）Reversion, works as live spindle（8）Rotate to the sun in illuminator（2）The plane of symmetry on when, stepping electricity
Machine（16）Stall；As photoconductive resistance R1（11）With photoconductive resistance R3（9）The light intensity that is subject to of one end be equal to photoconductive resistance R2（1）With
Photoconductive resistance R4（4）One end be subject to light intensity when, the sun is in illuminator（2）The plane of symmetry on, motor（16）Keep quiet
Only state.
It should be noted that：1）The present invention is a kind of to be using four light based on the solar thermal collector automatic tracking system of electric bridge
Quick resistance carries out full-bridge arrangement to realize to automatic sun tracking, it is also possible to carry out half-bridge arrangement using two photoconductive resistance
Realize to automatic sun tracking etc.；2）The invention is not limited in above example, the present invention for flat type solar heat collector,
The solar tracking tracks of device such as solar cooker is equally applicable, and two above aspect should be included within the scope of the present invention.
Claims (2)
1. a kind of solar thermal collector automatic tracking system based on electric bridge is it is characterised in that this system includes DC source
Continue in VCC, photoconductive resistance R1, photoconductive resistance R2, photoconductive resistance R3, photoconductive resistance R4, fixed value resistance R5, fixed value resistance R6, centre
Electrical equipment KA1, auxiliary reclay KA2, diode D1, diode D2, SR K, AT89C51 system, chip ULN2003A,
Motor M.
2. the following principle of the solar thermal collector automatic tracking system based on electric bridge according to claim 1, its feature
It is, described photoconductive resistance R1 and photoconductive resistance R3 is installed on same one end of solar thermal collector, photoconductive resistance R2 and photosensitive electricity
Resistance R4 is installed on the other end of solar thermal collector and constitutes electric bridge, the output electricity of electric bridge with photoconductive resistance R1 and photoconductive resistance R3
Pressure is added in auxiliary reclay KA1 and the two ends of auxiliary reclay KA2 respectively, and is respectively arranged with diode D1 on output circuit
And D2, the rotation of AT89C51 system and chip ULN2003A co- controlling motor and static；When photoconductive resistance R1 and light
The light intensity that one end of quick resistance R3 place solar thermal collector is subject to is more than photoconductive resistance R2 and photoconductive resistance R4 place solar energy
During the light intensity that one end of heat collector is subject to, bridge output voltage conducting diode D1, diode D2 end, auxiliary reclay KA1
It is energized and make its normally open contact to close, the P0.0/AD0 of AT89C51 system is in low level, thus single-chip microcomputer output
P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 send rotating forward pulse signal according to program, rotate forward pulse signal through chip
Motor is made to drive solar thermal collector to rotate forward after ULN2003A；Together should photoconductive resistance R1 and the photoconductive resistance R3 place sun
The light intensity that one end of energy heat collector is subject to is less than photoconductive resistance R2 and one end of photoconductive resistance R4 place solar thermal collector is subject to
Light intensity when, bridge output voltage conducting diode D2, diode D1 end, auxiliary reclay KA2 be energized and make its normally opened touch
Head closure, the P0.1/AD1 of AT89C51 system is in low level, thus single-chip microcomputer output P2.0/A8, P2.1/A9,
P2.2/A10, P2.3/A11 send inversion pulse signal according to program, and inversion pulse signal makes stepping after chip ULN2003A
Motor drives solar thermal collector reversion；When one end of photoconductive resistance R1 and photoconductive resistance R3 place solar thermal collector is subject to
During the light intensity that light intensity one end equal to photoconductive resistance R2 and photoconductive resistance R4 place solar thermal collector is subject to, bridge output voltage
It is zero, diode D1 and diode D2 cannot turn on, the P0.0/AD0 port of AT89C51 system and P0.1/AD1 port are all
It is in high level state, single-chip microcomputer output P2.0/A8, P2.1/A9, P2.2/A10, P2.3/A11 no longer send according to program
Pulse signal, step motor stop or remains stationary state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114833.6A CN106444866A (en) | 2016-12-07 | 2016-12-07 | Automatic tracking system of solar collector based on Bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114833.6A CN106444866A (en) | 2016-12-07 | 2016-12-07 | Automatic tracking system of solar collector based on Bridge |
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| Publication Number | Publication Date |
|---|---|
| CN106444866A true CN106444866A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114833.6A Pending CN106444866A (en) | 2016-12-07 | 2016-12-07 | Automatic tracking system of solar collector based on Bridge |
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| CN (1) | CN106444866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620624A (en) * | 2018-12-14 | 2019-04-16 | 重庆迈登医疗器械有限公司 | Tooth chair control circuit and its tooth chair control system based on MMA7361 |
| CN109838929A (en) * | 2017-09-17 | 2019-06-04 | 西北农林科技大学 | A kind of flat omnidirectional tracking solar thermal collector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440526A1 (en) * | 1978-11-03 | 1980-05-30 | Parabolique Systeme Ind Sa | Solar energy collector with pivoting mirror - has hydraulic driving system with reservoir(s) which allows positioning of mirror when power fails |
| CN2498549Y (en) * | 2001-08-20 | 2002-07-03 | 于元亮 | Solar water heater with photoelectric controlled automatic tracker |
| CN202512442U (en) * | 2011-12-08 | 2012-10-31 | 嘉兴学院 | Sun direction automatic tracking device for photovoltaic power generation |
| CN103090563A (en) * | 2013-02-26 | 2013-05-08 | 秦皇岛市北戴河兰德科技有限责任公司 | Multistage mini-type slot-type automatic tracking solar heat collector |
| CN203012517U (en) * | 2013-01-17 | 2013-06-19 | 龚浩岳 | Automatic tracking and positioning system used for solar cell panel |
-
2016
- 2016-12-07 CN CN201611114833.6A patent/CN106444866A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440526A1 (en) * | 1978-11-03 | 1980-05-30 | Parabolique Systeme Ind Sa | Solar energy collector with pivoting mirror - has hydraulic driving system with reservoir(s) which allows positioning of mirror when power fails |
| CN2498549Y (en) * | 2001-08-20 | 2002-07-03 | 于元亮 | Solar water heater with photoelectric controlled automatic tracker |
| CN202512442U (en) * | 2011-12-08 | 2012-10-31 | 嘉兴学院 | Sun direction automatic tracking device for photovoltaic power generation |
| CN203012517U (en) * | 2013-01-17 | 2013-06-19 | 龚浩岳 | Automatic tracking and positioning system used for solar cell panel |
| CN103090563A (en) * | 2013-02-26 | 2013-05-08 | 秦皇岛市北戴河兰德科技有限责任公司 | Multistage mini-type slot-type automatic tracking solar heat collector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838929A (en) * | 2017-09-17 | 2019-06-04 | 西北农林科技大学 | A kind of flat omnidirectional tracking solar thermal collector |
| CN109620624A (en) * | 2018-12-14 | 2019-04-16 | 重庆迈登医疗器械有限公司 | Tooth chair control circuit and its tooth chair control system based on MMA7361 |
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Application publication date: 20170222 |