Heliostat light following posture adjusting device based on photovoltaic panel

Abstract

The utility model discloses a photovoltaic panel-based heliostat light following attitude adjusting device, which relates to the technical field of photo-thermal power generation and comprises a photovoltaic panel, a heliostat support, an operational amplifier, a pitching motor, a horizontal motor, a single chip microcomputer module and a heliostat. Every two photovoltaic panels are spliced at a certain included angle to form two photovoltaic folded plates, the two photovoltaic folded plates are installed on the upper surface of the heliostat, one photovoltaic folded plate is installed in the east-west direction, and the other photovoltaic folded plate is installed in the north-south direction; the bottom of the heliostat is connected with a heliostat support, the bottom of the heliostat support is connected to a pitching motor, and a horizontal motor is arranged below the pitching motor; the output end of the photovoltaic panel is connected to the operational amplifier through a wire, the operational amplifier outputs logic signals to the single-chip microcomputer module, and the single-chip microcomputer module sends driving commands to the pitching motor and the horizontal motor to adjust the posture of the heliostat.

Description

Technical Field

[0001] The utility model relates to the technical field of photothermal power generation, and in particular to a heliostat light-chasing posture adjustment device based on a photovoltaic panel. Background Art

[0002] Solar thermal power generation (also known as concentrated solar power generation) is a method of generating electricity using solar energy. It collects solar thermal energy by concentrating it on a collector through a large-scale array of heliostats. The collected heat energy is converted into steam through a heat exchange device, and then combined with the process of traditional steam turbine generators to generate electricity. The operating efficiency of this technology depends on the focusing and heat collection ability of the heliostat, and the heliostat needs to be adjusted to a suitable posture to enhance the ability to focus sunlight. In other words, the ability of the heliostat to match the light-chasing system has an important impact on the efficiency of solar thermal power generation.

[0003] The current photovoltaic panel tracking system, such as the closed-loop control system that monitors the sun's position in real time through sensors, the model prediction control system that predicts the sun's position through the sun's trajectory mathematical model, and the infrared camera system that uses infrared technology to monitor solar radiation and track the sun's position, are relatively complex in their specific implementation and application, involving sophisticated hardware equipment and advanced software algorithms. In addition, the design and implementation of these systems require comprehensive consideration of multiple factors to ensure tracking of the sun's movement and collection and utilization of solar energy. Utility Model Content

[0004] The utility model aims to provide a simple and low-cost heliostat light-chasing device.

[0005] The technical solution of the utility model is: to provide a heliostat light-chasing attitude adjustment device based on a photovoltaic panel, the device comprising: a photovoltaic panel, a heliostat bracket, an operational amplifier, a pitch motor, a horizontal motor, a single-chip microcomputer module and a heliostat;

[0006] The photovoltaic panels are spliced ​​at a certain angle to form two photovoltaic folding plates, and the two photovoltaic folding plates are installed in the slots on the upper surface of the heliostat, one photovoltaic folding plate is installed in the east-west direction, and the other photovoltaic folding plate is installed in the north-south direction; the heliostat bracket is supported at the bottom of the heliostat, the pitch motor is arranged at the bottom of the heliostat bracket, and the horizontal motor is arranged below the pitch motor;

[0007] The output end of the photovoltaic panel is connected to the operational amplifier through a wire. The operational amplifier compares the voltages output by the two photovoltaic panels from the photovoltaic folding plate and outputs the comparison result to the single-chip microcomputer module. Based on the comparison result, the single-chip microcomputer module sends drive commands to the pitch motor and the horizontal motor to adjust the posture of the heliostat.

[0008] In any of the above technical solutions, further, the device also includes: a connecting member;

[0009] The connector is used to connect two photovoltaic panels, and the two photovoltaic panels are respectively inserted into the sockets on both sides of the connector.

[0010] In any of the above technical solutions, further, the pitch motor drives the heliostat bracket to tilt south or north according to the received signal; the horizontal motor drives the upper pitch motor and the heliostat bracket to tilt east or west according to the received signal.

[0011] In any of the above technical solutions, further, the positive pole of the output end of the east-facing photovoltaic panel is respectively connected to the inverting input end of the first operational amplifier and the non-inverting input end of the second operational amplifier, and the positive pole of the output end of the west-facing photovoltaic panel is respectively connected to the non-inverting input end of the first operational amplifier and the inverting input end of the second operational amplifier; the positive pole of the output end of the south-facing photovoltaic panel is respectively connected to the inverting input end of the third operational amplifier and the non-inverting input end of the fourth operational amplifier, and the positive pole of the output end of the north-facing photovoltaic panel is respectively connected to the non-inverting input end of the third operational amplifier and the inverting input end of the fourth operational amplifier.

[0012] In any of the above technical solutions, further, the operational amplifier amplifies the voltage difference between the inverting input terminal and the non-inverting input terminal and outputs it to the single-chip microcomputer module through the output terminal. When the voltage of the inverting input terminal is higher than the voltage of the non-inverting input terminal, the operational amplifier outputs a positive voltage, otherwise it outputs a negative voltage.

[0013] The single-chip microcomputer module sends a driving command to the horizontal motor according to the output of the first operational amplifier and the second operational amplifier and the preset logical judgment, and the single-chip microcomputer module sends a driving command to the pitch motor according to the output of the third operational amplifier and the fourth operational amplifier and the preset logical judgment.

[0014] In any of the above technical solutions, further, the output end of the first operational amplifier is connected to the forward logic channel of the horizontal motor of the single-chip module, the output end of the second operational amplifier is connected to the reverse logic channel of the horizontal motor of the single-chip module, the output end of the third operational amplifier is connected to the forward logic channel of the pitch motor of the single-chip module, and the output end of the fourth operational amplifier is connected to the reverse logic channel of the pitch motor of the single-chip module;

[0015] When the output voltage of the east-facing photovoltaic panel is greater than the output voltage of the west-facing photovoltaic panel, the first operational amplifier outputs a positive voltage, the second operational amplifier outputs a negative voltage, the single-chip microcomputer module drives the horizontal motor to rotate forward, and the horizontal motor rotates forward to drive the upper device to tilt eastward;

[0016] When the output voltage of the south-facing photovoltaic panel is greater than the output voltage of the north-facing photovoltaic panel, the third operational amplifier outputs a positive voltage, the fourth operational amplifier outputs a negative voltage, the single-chip microcomputer module drives the pitch motor to rotate forward, and the pitch motor rotates forward to drive the upper device to tilt southward.

[0017] The beneficial effects of the utility model are:

[0018] The technical solution in the utility model determines the position of the sun by the output voltage of the spliced ​​photovoltaic panels, and drives the pitch and horizontal direction motors through the simple logic of the single-chip microcomputer to change the posture of the heliostat connected to the photovoltaic panels. The utility model has a simple hardware structure, does not require complex software support, is cheap, and greatly reduces the cost of the light-chasing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The advantages of the above and additional aspects of the present invention will become apparent and easily understood in the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a circuit diagram of a heliostat tracking posture adjustment device based on a photovoltaic panel according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a heliostat light-chasing posture adjustment device based on a photovoltaic panel according to an embodiment of the utility model;

[0022] Figure 3 The present invention is a schematic diagram of an operational amplifier connection of a photovoltaic panel-based heliostat light-chasing attitude adjustment device according to an embodiment of the present invention.

[0023] Among them, 1-photovoltaic panel, 2-heliostat bracket, 3-connector, 4-operational amplifier, 5-pitch motor, 6-horizontal motor, 7-single chip module, 8-heliostat, 41-first operational amplifier, 42-second operational amplifier, 43-third operational amplifier, 44-fourth operational amplifier.

[0024] in addition, Figure 2 The heliostat 8 is reduced in size for schematic illustration, and the actual heliostat 8 is more than 10 times larger than the photovoltaic panel 1 . DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are elaborated to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides a heliostat tracking posture adjustment device based on a photovoltaic panel, and the device includes: a photovoltaic panel 1, a heliostat bracket 2, an operational amplifier 4, a pitch motor 5, a horizontal motor 6, and a single-chip computer module 7.

[0028] The photovoltaic panels 1 are spliced ​​in pairs at a certain angle to form two photovoltaic folding plates, one photovoltaic folding plate is placed in the east-west direction, and the other photovoltaic folding plate is placed in the north-south direction; in addition, the two photovoltaic panels 1 can be connected with a connector 3, and the two photovoltaic panels 1 are respectively inserted into the sockets on both sides of the connector 3. The connector 3 can play a buffering role to prevent the photovoltaic panels 1 from wearing each other. In this embodiment, the connector 3 is made of rubber material.

[0029] The two photovoltaic folding plates are both installed in a slot on the upper surface of a heliostat 8 . The bottom of the heliostat 8 is fixed with a heliostat bracket 2 . The bottom of the heliostat bracket 2 is connected to a pitch motor 5 . A horizontal motor 6 is arranged below the pitch motor 5 .

[0030] The pitch motor 5 drives the heliostat support 2 to tilt toward the south or north according to the received signal; the horizontal motor 6 drives the upper pitch motor 5 and the heliostat support 2 to tilt toward the east or west according to the received signal.

[0031] The output end of the photovoltaic panel 1 is connected to the operational amplifier 4 through a wire, the operational amplifier 4 outputs a logic signal to the single-chip microcomputer module 7, and the single-chip microcomputer module 7 sends a driving command to the pitch motor 5 and the horizontal motor 6.

[0032] like Figure 3 As shown, two photovoltaic folding panels facing east-west and north-south are arranged in close positions, the positive pole of the output end of the east photovoltaic panel (the blue line in the figure) is respectively connected to the inverting input end (marked as -) of the first operational amplifier 41 and the non-inverting input end (marked as +) of the second operational amplifier 42, and the positive pole of the output end of the west photovoltaic panel is respectively connected to the non-inverting input end of the first operational amplifier 41 and the inverting input end of the second operational amplifier 42; similarly, the positive pole of the output end of the south photovoltaic panel is respectively connected to the inverting input end of the third operational amplifier 43 and the non-inverting input end of the fourth operational amplifier 44, and the positive pole of the output end of the north photovoltaic panel is respectively connected to the non-inverting input end of the third operational amplifier 43 and the inverting input end of the fourth operational amplifier 44.

[0033] The operational amplifier 4 will amplify the voltage difference between the inverting input terminal and the non-inverting input terminal and output it to the single-chip microcomputer module 7 through the output terminal. When the voltage of the inverting input terminal is higher than the voltage of the non-inverting input terminal, the operational amplifier 4 outputs a positive voltage, otherwise it outputs a negative voltage. The single-chip microcomputer module 7 sends a driving command to the horizontal motor 6 according to the output of the first operational amplifier 41 and the second operational amplifier 42 and the preset logical judgment. Similarly, the single-chip microcomputer module 7 sends a driving command to the pitch motor 5 according to the output of the third operational amplifier 43 and the fourth operational amplifier 44 and the preset logical judgment.

[0034] The output end of the first operational amplifier 41 is connected to the forward rotation logic channel of the horizontal motor of the single-chip module 7, the output end of the second operational amplifier 42 is connected to the reverse rotation logic channel of the horizontal motor of the single-chip module 7, the output end of the third operational amplifier 43 is connected to the forward rotation logic channel of the pitch motor of the single-chip module 7, and the output end of the fourth operational amplifier 44 is connected to the reverse rotation logic channel of the pitch motor of the single-chip module 7.

[0035] Specifically, when the output voltage of the east-facing photovoltaic panel is greater than the output voltage of the west-facing photovoltaic panel, the first operational amplifier 41 outputs a positive voltage, the second operational amplifier 42 outputs a negative voltage, and the single-chip computer module 7 drives the horizontal motor 6 to rotate forward. The forward rotation direction of the horizontal motor 6 will drive the upper device to tilt eastward.

[0036] When the output voltage of the south-facing photovoltaic panel is greater than the output voltage of the north-facing photovoltaic panel, the third operational amplifier 43 outputs a positive voltage, the fourth operational amplifier 44 outputs a negative voltage, and the single-chip computer module 7 drives the pitch motor 5 to rotate forward. The forward rotation direction of the pitch motor 5 will drive the upper device to tilt southward.

[0037] When the output voltages of the two photovoltaic panels 1 of the east-west / north-south photovoltaic folding plate are equal, the horizontal motor 6 / the pitch motor 5 stops. At this time, the posture of the heliostat 8 is most suitable, achieving the purpose of precise light tracking.

[0038] In summary, the utility model proposes a heliostat light-chasing attitude adjustment device based on a photovoltaic panel, comprising: a photovoltaic panel 1, a heliostat bracket 2, a connector 3, an operational amplifier 4, a pitch motor 5, a horizontal motor 6, a single-chip microcomputer module 7 and a heliostat 8.

[0039] The photovoltaic panels 1 are spliced ​​in pairs at a certain angle to form two photovoltaic folding plates, and the two photovoltaic folding plates are both installed in the slots on the upper surface of the heliostat 8, one photovoltaic folding plate is installed in the east-west direction, and the other photovoltaic folding plate is installed in the north-south direction; the heliostat bracket 2 is supported at the bottom of the heliostat 8, and the bottom of the heliostat bracket 2 is connected to the pitch motor 5, and a horizontal motor 6 is arranged below the pitch motor 5.

[0040] The connector 3 is used to connect two photovoltaic panels 1 , and the two photovoltaic panels 1 are respectively inserted into the sockets on both sides of the connector 3 .

[0041] The output end of the photovoltaic panel 1 is connected to the operational amplifier 4 through a wire, and the operational amplifier 4 outputs a logic signal to the single-chip microcomputer module 7, and the single-chip microcomputer module 7 sends a driving command to the pitch motor 5 and the horizontal motor 6 to adjust the posture of the heliostat 8.

[0042] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The shapes of the various components in the drawings are schematic, and certain differences from their actual shapes are not excluded. The drawings are only used to illustrate the principles of the present invention and are not intended to limit the present invention.

[0044] Although the utility model is disclosed in detail with reference to the accompanying drawings, it should be understood that these descriptions are merely exemplary and are not intended to limit the application of the utility model. The protection scope of the utility model is defined by the appended claims and may include various modifications, alterations and equivalents made to the utility model without departing from the protection scope and spirit of the utility model.

Claims

1. A heliostat tracking attitude adjustment device based on photovoltaic panels, characterized in that: The device comprises: a photovoltaic panel (1), a heliostat support (2), an operational amplifier (4), a pitch motor (5), a horizontal motor (6), a single-chip microcomputer module (7) and a heliostat (8); The photovoltaic panels (1) are spliced ​​in pairs at a certain angle to form two photovoltaic folding plates, and the two photovoltaic folding plates are both installed in the slots on the upper surface of the heliostat (8), one photovoltaic folding plate is installed in an east-west direction, and the other photovoltaic folding plate is installed in a north-south direction; the heliostat bracket (2) is supported at the bottom of the heliostat (8), the pitch motor (5) is arranged at the bottom of the heliostat bracket (2), and the horizontal motor (6) is arranged below the pitch motor (5); The output end of the photovoltaic panel (1) is connected to the operational amplifier (4) via a wire; the operational amplifier (4) compares the voltages outputted from the two photovoltaic panels (1) of the photovoltaic folding plate and outputs the comparison result to the single-chip computer module (7); the single-chip computer module (7) sends a drive command to the pitch motor (5) and the horizontal motor (6) based on the comparison result to adjust the posture of the heliostat (8).

2. The photovoltaic panel-based heliostat tracking attitude adjustment device according to claim 1, characterized in that: The device further comprises: a connecting member (3); The connecting piece (3) is used to connect two photovoltaic panels (1), and the two photovoltaic panels (1) are respectively inserted into the sockets on both sides of the connecting piece (3).

3. The photovoltaic panel-based heliostat tracking attitude adjustment device according to claim 1, characterized in that: The pitch motor (5) drives the heliostat support (2) to tilt toward the south or north according to the received signal; and the horizontal motor (6) drives the pitch motor (5) and the heliostat support (2) above to tilt toward the east or west according to the received signal.

4. The photovoltaic panel-based heliostat tracking attitude adjustment device according to claim 1, characterized in that: The positive pole of the output end of the east-facing photovoltaic panel is respectively connected to the inverting input end of the first operational amplifier (41) and the non-inverting input end of the second operational amplifier (42), and the positive pole of the output end of the west-facing photovoltaic panel is respectively connected to the non-inverting input end of the first operational amplifier (41) and the inverting input end of the second operational amplifier (42); the positive pole of the output end of the south-facing photovoltaic panel is respectively connected to the inverting input end of the third operational amplifier (43) and the non-inverting input end of the fourth operational amplifier (44), and the positive pole of the output end of the north-facing photovoltaic panel is respectively connected to the non-inverting input end of the third operational amplifier (43) and the inverting input end of the fourth operational amplifier (44).

5. The photovoltaic panel-based heliostat tracking attitude adjustment device according to claim 4, characterized in that: The operational amplifier (4) amplifies the voltage difference between the inverting input terminal and the non-inverting input terminal and outputs the voltage difference to the single-chip microcomputer module (7) through the output terminal. When the voltage of the inverting input terminal is higher than the voltage of the non-inverting input terminal, the operational amplifier (4) outputs a positive voltage, otherwise it outputs a negative voltage. The single-chip computer module (7) sends a driving command to the horizontal motor (6) according to the output of the first operational amplifier (41) and the second operational amplifier (42) and a preset logical judgment, and the single-chip computer module (7) sends a driving command to the pitch motor (5) according to the output of the third operational amplifier (43) and the fourth operational amplifier (44) and a preset logical judgment.

6. The photovoltaic panel-based heliostat tracking attitude adjustment device according to claim 5, characterized in that: The output end of the first operational amplifier (41) is connected to the horizontal motor forward logic channel of the single-chip microcomputer module (7), the output end of the second operational amplifier (42) is connected to the horizontal motor reverse logic channel of the single-chip microcomputer module (7), the output end of the third operational amplifier (43) is connected to the pitch motor forward logic channel of the single-chip microcomputer module (7), and the output end of the fourth operational amplifier (44) is connected to the pitch motor reverse logic channel of the single-chip microcomputer module (7); When the output voltage of the east-facing photovoltaic panel is greater than the output voltage of the west-facing photovoltaic panel, the first operational amplifier (41) outputs a positive voltage, the second operational amplifier (42) outputs a negative voltage, the single-chip computer module (7) drives the horizontal motor (6) to rotate forward, and the horizontal motor (6) rotates forward to drive the upper device to tilt eastward; When the output voltage of the south-facing photovoltaic panel is greater than the output voltage of the north-facing photovoltaic panel, the third operational amplifier (43) outputs a positive voltage, the fourth operational amplifier (44) outputs a negative voltage, the single-chip computer module (7) drives the pitch motor (5) to rotate forward, and the pitch motor (5) rotates forward to drive the upper device to tilt southward.

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