CN208432909U

CN208432909U - A kind of solar photovoltaic bracket automatic sun-tracing system

Info

Publication number: CN208432909U
Application number: CN201821118201.1U
Authority: CN
Inventors: 行鸿彦; 阎妍
Original assignee: Nanjing University of Information Science and Technology
Current assignee: Nanjing University of Information Science and Technology
Priority date: 2018-07-16
Filing date: 2018-07-16
Publication date: 2019-01-25
Anticipated expiration: 2028-07-16

Abstract

The utility model discloses a kind of solar photovoltaic bracket automatic sun-tracing systems, the system mainly includes central control module, stepper motor drive module, light intensity data-converting block and clock module, wherein central control module output connection stepper motor drive module, it controls stepper motor and rotates angle, central control module input connection light intensity data-converting block and clock module.The light intensity data-converting block of this system, which directly acquires intensity of illumination signal and is converted into electric signal, feeds back to central control module to adjust the rotation angle of stepper motor, forms closed-loop control.Central control module uses STM32 singlechip chip, and integrated level is high, and stability is good；Light intensity data-converting block uses TSL2561 light intensity number conversion chip, low in energy consumption, broad quantum, strong antijamming capability.The utility model realizes the photovoltaic generating system tracking more accurate to the sun, further improves the generated energy of photovoltaic generating system.

Description

A kind of solar photovoltaic bracket automatic sun-tracing system

Technical field

The utility model relates to a kind of control systems for realizing solar panel double-shaft auto-tracking, are used for solar-electricity The orientation of pond plate automatic sun-tracking.

Background technique

China has become universally acknowledged Solar use industry and market big country.As solar energy power generating is in new energy Shared ratio increases year by year in the market of source, and relevant technical research becomes to be even more important.Solar energy be a kind of total amount it is huge, The widely distributed energy, but it is distributed across that the energy density on unit area is lower, therefore to promote the utilization of solar energy Efficiency improves the generated energy of photovoltaic system, on the one hand to improve the photoelectric conversion efficiency of solar power generation component itself, another party Face needs to improve the solar energy density that electrification component unit area receives as far as possible, i.e. holding photovoltaic electrification component begins Eventually perpendicular to the direct projection direction of sunlight, solve the problems, such as that this feasible program is photovoltaic automatic sun-tracing system.

Automatic tracking method used by current existing sun tracking system is mainly photodetection tracing and view day operation The combination of track following method or the two.Depending on the location parameter that day operation track is according to photovoltaic system, pass through calculation procedure meter The corresponding relationship of obtained time and sun direction, height, and then motor rotation is controlled, reach tracking purpose；Photoelectricity Detection tracing is the voltage signal for detecting to obtain the deflection of sunlight incident orientation by a four-quadrant photo detector, is calculated Motor defection signal is converted to, makes photovoltaic panel always perpendicular to incident light so as to adjust motor rotation angle.Above method point Not Cai Yongliao direction calculating and direction tracking, the intensity of illumination variable most directly changed caused by direction change is not included in system The rotation angle of motor is controlled in control parameter.

Summary of the invention

Goal of the invention: the utility model proposes a kind of control systems for realizing solar panel double-shaft auto-tracking, directly Acquisition intensity of illumination signal feedback is connect to control system, photovoltaic battery panel is made to be in optimum bit with the variation moment of position of sun It sets, realizes the photovoltaic generating system tracking more accurate to the sun, improve the generated energy of photovoltaic generating system.

Technical solution: to achieve the purpose of the present invention, the technical scheme adopted by the invention is that:

A kind of solar photovoltaic bracket automatic sun-tracing system, including central control module, stepper motor drive module, light intensity Data-converting block and clock module, wherein the central control module output connection stepper motor drive module, control step Angle, central control module input connection light intensity data-converting block and clock module are rotated into motor, forms closed-loop control.

Optionally, the central control module is made of STM32 singlechip chip, crystal oscillating circuit and reset circuit, brilliant Vibration circuit and reset circuit are connected with single-chip microcontroller respectively.

Optionally, the stepper motor drive module uses PMM8713 driving chip and ULN2803 drives relay Device.

Optionally, the light intensity data-converting block uses TSL2561 light intensity number conversion chip.

Optionally, the clock module uses SLM1302 chip.

The utility model has the advantages that the utility model is compared with prior art, illumination is directly acquired using light intensity data-converting block Strength signal is converted into electric signal and feeds back to central control module to adjust the rotation angle of stepper motor, forms closed-loop control, The photovoltaic generating system tracking more accurate to the sun is realized, the generated energy of photovoltaic generating system is further improved.System Using TSL2561 light intensity number conversion chip and STM32 singlechip chip, there is low in energy consumption, strong antijamming capability integrated level High advantage.

Detailed description of the invention

Fig. 1 is the design principle block diagram of the utility model；

Fig. 2 is the central control module circuit diagram of the utility model；

Fig. 3 is the stepper motor driving circuit figure of the utility model；

Fig. 4 is the light intensity data-converting block circuit diagram of the utility model；

Fig. 5 is the clock module circuit diagram of the utility model.

Specific embodiment

The technical solution of the utility model is further described with reference to the accompanying drawings and examples.

As shown in Figure 1, a kind of solar photovoltaic bracket automatic sun-tracing system, the solar photovoltaic bracket automatic sun-tracing System includes central control module, stepper motor drive module, light intensity data-converting block and clock module, wherein in described Control module output connection stepper motor drive module is entreated, control stepper motor rotates angle, central control module input connection Light intensity data-converting block and clock module form closed-loop control.

As shown in Fig. 2, the central control module is made of STM32 singlechip chip, crystal oscillating circuit and reset circuit, Crystal oscillating circuit and reset circuit are connected with single-chip microcontroller respectively.Crystal oscillating circuit by a 1MHz crystal oscillator X1, one big Resistance R1 and 2 capacitor C1, C2 compositions.The pin 5 of single-chip microcontroller connects one end of crystal oscillator X1, one end of big resistance R1 and electricity Hold one end of C2, the other end ground connection of capacitor C2；The pin 6 of the single-chip microcontroller connects the other end of crystal oscillator X1, big resistance The other end of R1 and one end of capacitor C2, the other end ground connection of capacitor C2.Reset circuit by a resistance R2, a capacitor C3 and One key RESET composition, one end of 7 connecting resistance R2 of pin of the single-chip microcontroller, one end of capacitor C3, key RESET one The other end ground connection of end, another termination high level of resistance R2, capacitor C3 and key RESET.

As shown in figure 3, the stepper motor drive module by PMM8713 driving chip, ULN2803 driving relay and Several capacitors, resistance composition.PMM8713 driving chip pin 5, pin 6 and pin 7 connect high level, pin 1, pin 2 and pin 8 connect low level, 3 order piece power traction foot PC7 of pin, 4 order piece power traction foot PC6 of pin, one end of 9 connecting resistance R12 of pin, pin 14 and pin 16 connect one end of high level and resistance R13, one end of another termination capacitor C11 of resistance R12 and resistance R13, electricity Hold the other end ground connection of C11.Input pin 4, pin 3, pin 2 and the pin 1 of ULN2803 driving relay connect respectively PMM8713 driving chip output pin 10, pin 11, pin 12 and pin 13, ULN2803 driving relay output pin 15, Pin 16, pin 17 and pin 18 are separately connected pin 1, pin 2, pin 3 and the pin 4 of interface socket CON6, and ULN2803 drives Motor type relay pin 9 is grounded, and pin 5, the pin 6 of pin 10 and interface socket CON6. connect high level.

As shown in figure 4, the light intensity data-converting block uses TSL2561 light intensity number conversion chip.TSL2561 core Piece SDA data line is connected with STM32 single-chip microcontroller SDA data line, when TSL2561 chip SCL clock line is with STM32 single-chip microcontroller SCL Clock line is connected, and TSL2561 chip I NT input is connected with STM32 single-chip microcontroller SMB System Management Bus, and ADD pin connects high level, ASEL pin and GND pin ground connection.

As shown in figure 5, the clock module uses SLM1302 chip.SLM1302 chip pin 1 connects lithium battery power supply, Pin 8 connects one end of high level and capacitor C, the other end ground connection of capacitor C, and pin 2 meets crystal oscillator input XT2IN, and pin 3 connects crystal oscillator XT2OUT, 6 order piece power traction foot PC5 of pin, 7 order piece power traction foot PC4 of pin are exported, pin 4 is grounded.

Claims

1. a kind of solar photovoltaic bracket automatic sun-tracing system, it is characterised in that: the solar photovoltaic bracket automatic sun-tracing System includes central control module, stepper motor drive module, light intensity data-converting block and clock module, wherein in described Control module output connection stepper motor drive module is entreated, control stepper motor rotates angle, central control module input connection Light intensity data-converting block and clock module, wherein light intensity data-converting block directly acquires intensity of illumination signal and is converted into telecommunications Number central control module is fed back to adjust the rotation angle of stepper motor, forms closed-loop control.

2. solar photovoltaic bracket automatic sun-tracing system according to claim 1, it is characterised in that: the center control Module is made of STM32 singlechip chip, crystal oscillating circuit and reset circuit, crystal oscillating circuit and reset circuit respectively with single-chip microcontroller phase Connection.

3. solar photovoltaic bracket automatic sun-tracing system according to claim 1, it is characterised in that: the stepper motor Drive module uses PMM8713 driving chip and ULN2803 drives relay.

4. solar photovoltaic bracket automatic sun-tracing system according to claim 1, it is characterised in that: the light intensity number Conversion module uses TSL2561 light intensity number conversion chip.

5. solar photovoltaic bracket automatic sun-tracing system according to claim 1, it is characterised in that: the clock module Using SLM1302 chip.