CN113126661A - Low-power-consumption photovoltaic sun tracking circuit - Google Patents
Low-power-consumption photovoltaic sun tracking circuit Download PDFInfo
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- CN113126661A CN113126661A CN202110436310.8A CN202110436310A CN113126661A CN 113126661 A CN113126661 A CN 113126661A CN 202110436310 A CN202110436310 A CN 202110436310A CN 113126661 A CN113126661 A CN 113126661A
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- mcu
- subtracter
- triode
- relay
- photosensitive sensor
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- 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
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- 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
- Y02E10/50—Photovoltaic [PV] energy
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention relates to a low-power-consumption photovoltaic sun tracking circuit. The invention comprises a first photosensitive sensor, a second photosensitive sensor, a forward rotation control circuit, a reverse rotation control circuit and a steering motor; the first photosensitive sensor and the second photosensitive sensor are respectively fixed at two ends of the photovoltaic panel; the forward rotation control circuit comprises a first subtracter, a first relay, a first MCU and a first triode; the positive input end of the first subtracter is connected with the first photosensitive sensor, the reverse input end of the first subtracter is connected with the second photosensitive sensor, the output end of the first subtracter is connected with the first relay, the first relay is connected with the first MCU awakening pin, the reset pin of the first MCU is connected with the positive rotation terminal of the steering motor, and the general input and output pin of the first MCU is connected with the positive rotation terminal of the steering motor through the first triode. The solar tracking control circuit can effectively adjust the circuit driving motor to track the sun, and greatly reduces the power consumption.
Description
Technical Field
The invention relates to the technical field of photovoltaic sun tracking control, in particular to a low-power-consumption photovoltaic sun tracking circuit.
Background
At present, the existing sun tracking circuit is complex, a large number of electronic elements are needed, a main control unit is in a working state for a long time, and when the photovoltaic panel is controlled to turn to obtain more solar energy, more electric energy is consumed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a low-power-consumption photovoltaic sun tracking circuit.
The technical scheme adopted by the invention for realizing the purpose is as follows: a low-power-consumption photovoltaic sun tracking circuit comprises a first photosensitive sensor, a second photosensitive sensor, a forward rotation control circuit, a reverse rotation control circuit and a steering motor; the first photosensitive sensor and the second photosensitive sensor are respectively fixed at two ends of the photovoltaic panel;
the forward rotation control circuit comprises a first subtracter, a first relay, a first MCU and a first triode; the positive input end of the first subtracter is connected with the first photosensitive sensor, the reverse input end of the first subtracter is connected with the second photosensitive sensor, the output end of the first subtracter is connected with the first relay, the first relay is connected with the first MCU awakening pin, the reset pin of the first MCU is connected with the positive rotation terminal of the steering motor, and the general input and output pin of the first MCU is connected with the positive rotation terminal of the steering motor through the first triode;
the inversion control circuit comprises a second subtracter, a second relay, a second MCU and a second triode; the positive input end of the second subtracter is connected with the second photosensitive sensor, the negative input end of the second subtracter is connected with the first photosensitive sensor, the output end of the second subtracter is connected with the second relay, the second relay is connected with the awakening pin of the second MCU, and the universal input and output pin of the second MCU is connected with the reversing terminal of the steering motor through the second triode.
The steering motor is characterized by further comprising a power module, a first resistor and a second resistor, wherein the forward output end of the power module is connected with a forward rotation terminal of the steering motor, the first subtractor and the second subtractor, the power module is also connected with a reset pin of the first MCU through the first resistor, and the power module is connected with a reset pin of the second MCU through the second resistor; and the negative output end of the power supply module is connected with the first triode, the second triode, the first subtracter, the second subtracter, the first MCU and the second MCU and is used for providing working voltage.
The power module adopts a 3V button battery.
The first triode is an NPN triode, the base electrode of the first triode is connected with the universal input and output pin of the first MCU, the emitting electrode of the first triode is connected with the negative phase output end of the power supply module, and the collecting electrode of the first triode is connected with the positive rotation terminal of the steering motor.
The second triode is an NPN triode, the base electrode of the second triode is connected with the universal input and output pin of the second MCU, the emitter electrode of the second triode is connected with the negative phase output end of the power supply module, and the collector electrode of the second triode is connected with the reverse terminal of the steering motor.
The positive pole of the coil of the first relay is connected with the output end of the first subtracter, the negative pole of the coil is connected with the negative phase output end of the power module, the positive pole of the coil is further connected with the awakening pin of the first MCU, and the normally closed contact is connected with the reset pin of the first MCU and the negative output end of the power module.
The positive pole of the coil of the second relay is connected with the output end of the second subtracter, the negative pole of the coil is connected with the positive output end of the power module, the positive pole of the coil is also connected with the awakening pin of the first MCU, and the normally closed contact is connected with the reset pin of the second MCU and the negative output end of the power module through a resistor.
The invention has the following advantages and beneficial effects:
1. the invention can effectively adjust the circuit to drive the motor to track the sun, and greatly reduces the power consumption of the sun tracking system by combining the wake-up mode and the standby mode.
2. According to the invention, the MCU is woken up ingeniously by means of the standby mode in the low power consumption mode of the MCU singlechip and the comparison of the light intensity of photosensitive components on two sides of the external photovoltaic panel, so that the driving motor rotates forwards and backwards.
3. The photovoltaic panel is easy to realize, does not need to be additionally provided with additional structure change of the existing photovoltaic panel, and has good market applicability and high degree of combination with the prior art.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a low-power-consumption photovoltaic sun tracking circuit includes a first photosensor (photosensor 1), a second photosensor (photosensor 2), a forward rotation control circuit, a reverse rotation control circuit, and a steering motor M; the first photosensitive sensor and the second photosensitive sensor are respectively fixed at two ends of the photovoltaic panel; the forward rotation control circuit comprises a first subtracter, a first relay, a first MCU (MCU1) and a first triode; the positive input end of the first subtracter is connected with the first photosensitive sensor through a 10k resistor, the reverse input end of the first subtracter is connected with the second photosensitive sensor through another 10k resistor, the output end of the first subtracter is connected with the first relay, the first relay is connected with the first MCU awakening pin WKUP, the reset pin of the first MCU is connected with the positive rotation terminal of the steering motor, and the general input and output pin of the first MCU is connected with the positive rotation terminal of the steering motor through the first triode; the inversion control circuit comprises a second subtracter, a second relay, a second MCU (MCU2) and a second triode; the positive input end of the second subtracter is connected with the second photosensitive sensor through a 10k resistor, the reverse input end of the second subtracter is connected with the first photosensitive sensor through another 10k resistor, the output end of the first photosensitive sensor is connected with the second relay, the second relay is connected with the awakening pin of the second MCU, and the universal input and output pin of the second MCU is connected with the reverse terminal of the steering motor through the second triode.
The steering motor further comprises a power module, a first resistor (10k) and a second resistor (10k), wherein the forward output end of the power module is connected with a forward rotation terminal of the steering motor, a first subtracter and a second subtracter, the power module is also connected with a reset pin of the first MCU through the first resistor, and the power module is connected with a reset pin of the second MCU through the second resistor; and the negative output end of the power supply module is connected with the first triode, the second triode, the first subtracter, the second subtracter, the first MCU and the second MCU and is used for providing working voltage. The power module adopts 3V button cell, and 3V is MCU power supply, optional components and parts cr1220 or other.
The first triode is an NPN triode, and can be selected from an S8050 component or other components, the base electrode of the first triode is connected with a universal input/output pin of the first MCU, the emitter electrode of the first triode is connected with the negative phase output end of the power supply module, and the collector electrode of the first triode is connected with the positive rotation terminal of the steering motor. The second triode is an NPN triode and can be selected from an S8050 component or other components, the base electrode of the second triode is connected with a universal input/output pin of the second MCU, the emitter electrode of the second triode is connected with the negative phase output end of the power supply module, and the collector electrode of the second triode is connected with the reverse terminal of the steering motor.
The positive pole of the coil of the first relay is connected with the output end of the first subtracter, the negative pole of the coil is connected with the negative phase output end of the power module, the positive pole of the coil is further connected with the awakening pin of the first MCU, and the normally closed contact is connected with the reset pin of the first MCU and the negative output end of the power module. The positive pole of the coil of the second relay is connected with the output end of the second subtracter, the negative pole of the coil is connected with the positive output end of the power module, the positive pole of the coil is also connected with the awakening pin of the first MCU, and the normally closed contact is connected with the reset pin of the second MCU and the negative output end of the power module through a resistor. The coil DC3V is powered by a selected component HK4100F-DC 3V-SHG/SRD-03VDC-SL-C or other components.
MCU: a standard 3.3V power supply single chip microcomputer can select an STM32 component or other components.
The working principle is as follows: the whole circuit comprises two MCUs, wherein one MCU controls the steering motor to rotate forwards, and the other MCU controls the steering motor to rotate backwards. When the difference value of the comparison between the first photosensitive sensor and the second photosensitive sensor is larger than 0, the fact that the light intensity of the first photosensitive sensor is strong is indicated, the first subtracter outputs high level to awaken the first MCU, and then the steering motor is driven to rotate forwards, so that the photovoltaic panel deflects towards the side with the strong light intensity.
In two contacts of a relay coil, a negative electrode is connected with a negative electrode of the whole circuit, a positive electrode is connected into a circuit of a subtracter and an MCU (any MCU) in series, when the first subtracter outputs a high level, the output of the first photosensitive sensor is larger than the output of the second photosensitive sensor, the coil of the first relay is electrified, a normally closed switch of the relay is turned on and off at the moment, a RESET pin (the RESET pin is effective in a low level) of the MCU is turned into a low level, and the MCU is RESET at the moment. If the RESET pin is in a high level, the MCU does not RESET.
Claims (7)
1. A low-power-consumption photovoltaic sun tracking circuit is characterized by comprising a first photosensitive sensor, a second photosensitive sensor, a forward rotation control circuit, a reverse rotation control circuit and a steering motor; the first photosensitive sensor and the second photosensitive sensor are respectively fixed at two ends of the photovoltaic panel;
the forward rotation control circuit comprises a first subtracter, a first relay, a first MCU and a first triode; the positive input end of the first subtracter is connected with the first photosensitive sensor, the reverse input end of the first subtracter is connected with the second photosensitive sensor, the output end of the first subtracter is connected with the first relay, the first relay is connected with the first MCU awakening pin, the reset pin of the first MCU is connected with the positive rotation terminal of the steering motor, and the general input and output pin of the first MCU is connected with the positive rotation terminal of the steering motor through the first triode;
the inversion control circuit comprises a second subtracter, a second relay, a second MCU and a second triode; the positive input end of the second subtracter is connected with the second photosensitive sensor, the negative input end of the second subtracter is connected with the first photosensitive sensor, the output end of the second subtracter is connected with the second relay, the second relay is connected with the awakening pin of the second MCU, and the universal input and output pin of the second MCU is connected with the reversing terminal of the steering motor through the second triode.
2. The low-power-consumption photovoltaic sun tracking circuit according to claim 1, further comprising a power module, a first resistor and a second resistor, wherein a forward output end of the power module is connected with a forward terminal of the steering motor, the first subtractor and the second subtractor, the power module is further connected with a reset pin of the first MCU through the first resistor, and the power module is further connected with a reset pin of the second MCU through the second resistor; and the negative output end of the power supply module is connected with the first triode, the second triode, the first subtracter, the second subtracter, the first MCU and the second MCU and is used for providing working voltage.
3. The low-power-consumption photovoltaic sun tracking circuit according to claim 2, wherein the power module is a 3V button cell.
4. The low-power-consumption photovoltaic sun tracking circuit according to claim 2, wherein the first triode is an NPN-type triode, a base of the NPN-type triode is connected to the general input/output pin of the first MCU, an emitter of the NPN-type triode is connected to the negative phase output terminal of the power module, and a collector of the NPN-type triode is connected to the positive rotation terminal of the steering motor.
5. The photovoltaic solar tracking circuit with low power consumption as claimed in claim 2, wherein the second triode is an NPN-type triode, a base is connected to the general input/output pin of the second MCU, an emitter is connected to the negative phase output terminal of the power module, and a collector is connected to the reverse terminal of the steering motor.
6. The low-power-consumption photovoltaic sun tracking circuit according to claim 2, wherein a coil anode of the first relay is connected to an output end of the first subtractor, a coil cathode of the first relay is connected to a negative phase output end of the power module, a coil anode of the first relay is further connected to a wake-up pin of the first MCU, and a normally closed contact is connected to a reset pin of the first MCU and a negative output end of the power module.
7. The photovoltaic solar tracking circuit with low power consumption as claimed in claim 2, wherein a coil anode of the second relay is connected with an output end of the second subtractor, a coil cathode is connected with a positive output end of the power module, a coil anode is further connected with a wake-up pin of the first MCU, and a normally closed contact is connected with a reset pin of the second MCU and a negative output end of the power module through a resistor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110436310.8A CN113126661B (en) | 2021-04-22 | 2021-04-22 | Low-power consumption photovoltaic sun tracking circuit |
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| CN202110436310.8A CN113126661B (en) | 2021-04-22 | 2021-04-22 | Low-power consumption photovoltaic sun tracking circuit |
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| CN113126661A true CN113126661A (en) | 2021-07-16 |
| CN113126661B CN113126661B (en) | 2023-06-30 |
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2021
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| US20100067422A1 (en) * | 2008-09-12 | 2010-03-18 | Qualcomm Incorporated | Apparatus and methods for controlling a sleep mode in a wireless device |
| CN202939434U (en) * | 2012-10-31 | 2013-05-15 | 华立仪表集团股份有限公司 | Infrared wake-up receiving circuit |
| CN203287781U (en) * | 2013-04-16 | 2013-11-13 | 成都天宇创新科技有限公司 | Solar energy receiver controller capable of automatic light-tracking |
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| CN113126661B (en) | 2023-06-30 |
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