Automatic light tracking control circuit for photovoltaic panel

Abstract

The utility model discloses a kind of photovoltaic panel automatic light chasing control circuit, including voltage conversion module, signal acquisition module, signal comparison module and motor drive module, voltage conversion module is converted into VCC low voltage signal by DC-DC voltage reduction circuit to the voltage signal of energy storage battery, signal acquisition module is powered by the VCC output by voltage conversion module, VCC respectively connects photosensitive resistance R1, R2 and resistance R3, R4 to GND, photosensitive resistance R1 and R2 are respectively installed on photovoltaic panel left and right or upper and lower symmetrical position, signal comparison module is powered by the VCC output by voltage conversion module, motor drive module is powered by photovoltaic panel energy storage battery VBAT, the utility model is built using circuit to realize automatic light chasing, pure hardware circuit construction, lower in cost, more stable in performance, without program controller, stronger in real time, lower in failure rate, with wide application prospect, conducive to popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to an automatic light-following control circuit for photovoltaic panels. Background Technology

[0002] Currently, existing technologies all rely on sensors to collect light intensity and transmit the signals to a processor. The processor then analyzes and calculates the signals or directly controls the movement of the photovoltaic panels via a timed program. However, traditional solar panels are fixed in position and angle, unable to adjust their angle to follow the sun's position, resulting in low light-gathering efficiency. Some automatic tracking photovoltaic systems use programmable controllers, which are not only costly but also have a high failure rate. Therefore, there is an urgent need to develop an automatic tracking control circuit for photovoltaic panels to solve the aforementioned technical problems.

[0003] In view of the above, this utility model is hereby proposed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic light-tracking control circuit for photovoltaic panels. It achieves automatic light tracking through circuit construction, is built entirely with hardware, has lower cost and more stable performance, does not require a programmable controller, has stronger real-time performance and a lower failure rate, has broad application prospects, and is conducive to its widespread application.

[0005] To achieve the above objectives, this utility model provides an automatic photovoltaic panel tracking control circuit, comprising a voltage conversion module, a signal acquisition module, a signal comparison module, and a motor drive module. The voltage conversion module converts the voltage signal from the energy storage battery into a low-voltage signal (VCC) via a DC-DC step-down circuit. The signal acquisition module is powered by the VCC output from the voltage conversion module. VCC is connected to photoresistors R1 and R2 and resistors R3 and R4 to GND. Photoresistors R1 and R2 are respectively installed symmetrically on the left and right or top and bottom of the photovoltaic panel. The signal comparison module is powered by the VCC output from the voltage conversion module. VCC is connected to the power supply pin (VCC) of voltage comparator U1 via energy storage capacitor C1 and decoupling capacitor C2. The GND pin of voltage comparator U1 is connected to ground. The photoresistors R1 and R2... The intermediate connection points of resistors R3 and R4 are respectively connected to the non-inverting input terminal IN1+ of channel one and the inverting input terminal IN2- of channel two of voltage comparator U1. The intermediate connection points of resistors R3 and R4 are respectively connected to the inverting input terminal IN1- of channel one and the non-inverting input terminal IN2+ of channel two of voltage comparator U1. The two output channels OUT1 and OUT2 of voltage comparator U1 are respectively connected to the two input control channels IN1 and IN2 of motor driver U2. The motor drive module is powered by photovoltaic energy storage battery VBAT. VBAT is connected to the power supply pin VM of motor driver U2 through energy storage capacitor C3 and decoupling capacitor C4. The GND pin of motor driver U2 is connected to ground. The two output channels OUT1 and OUT2 of motor driver U2 are respectively connected to the two ends of high-power DC speed reducer M1.

[0006] Preferably, the VCC voltage does not exceed the smaller of the maximum supply voltage of the voltage comparator U1 and the maximum logic voltage of the motor driver U2.

[0007] Preferably, the photoresistors R1 and R2 have the same specifications and model.

[0008] Preferably, the resistors R3 and R4 have the same specifications.

[0009] The automatic light-following control circuit for photovoltaic panels provided by this utility model has the following beneficial effects.

[0010] 1. This utility model achieves automatic light tracking entirely through circuit construction. By installing two photoresistors on the left and right or top and bottom symmetrical positions of the solar panel, the motor can automatically rotate towards the side with stronger sunlight.

[0011] 2. This utility model is constructed using pure hardware circuitry, resulting in lower cost, more stable performance, no need for a program controller, stronger real-time performance, and lower failure rate. Attached Figure Description

[0012] Figure 1 The present invention provides a circuit diagram of an automatic light-tracking control circuit for photovoltaic panels.

[0013] In the picture:

[0014] 1. Voltage conversion module 2. Signal acquisition module 3. Signal comparison module 4. Motor drive module 5. DC-DC step-down circuit. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments and accompanying drawings to help understand the content of the present invention.

[0016] like Figure 1 The diagram shown is a circuit schematic of an automatic solar tracking control circuit for a photovoltaic panel provided by this utility model. This automatic solar tracking control circuit includes a voltage conversion module 1, a signal acquisition module 2, a signal comparison module 3, and a motor drive module 4. The voltage conversion module 1 converts the voltage signal from the energy storage battery into a low-voltage signal (VCC) via a DC-DC step-down circuit 5. The signal acquisition module 2 is powered by the VCC output from the voltage conversion module 1. VCC is connected to photoresistors R1 and R2 and resistors R3 and R4 to GND. The photoresistors R1 and R2 are installed symmetrically on the left and right or top and bottom of the photovoltaic panel. The signal comparison module 3 is powered by the VCC output from the voltage conversion module 1. VCC is connected to the power supply pin (VCC) of the voltage comparator U1 via an energy storage capacitor C1 and a decoupling capacitor C2. The GND pin of the voltage comparator U1 is connected to ground. The intermediate connection between the photoresistors R1 and R2 is... The points are respectively connected to the non-inverting input terminal IN1+ of channel one and the inverting input terminal IN2- of channel two of voltage comparator U1. The intermediate connection point of resistors R3 and R4 is respectively connected to the inverting input terminal IN1- of channel one and the non-inverting input terminal IN2+ of channel two of voltage comparator U1. The two output channels OUT1 and OUT2 of voltage comparator U1 are respectively connected to the two input control channels IN1 and IN2 of motor driver U2. The motor drive module 4 is powered by the photovoltaic energy storage battery VBAT. VBAT is connected to the power supply pin VM of motor driver U2 through energy storage capacitor C3 and decoupling capacitor C4. The GND pin of motor driver U2 is connected to ground. The two output channels OUT1 and OUT2 of motor driver U2 are respectively connected to the two ends of high-power DC speed reducer M1. The VCC voltage does not exceed the smaller value between the maximum supply voltage of voltage comparator U1 and the maximum logic voltage of motor driver U2. The photoresistors R1 and R2 have the same specifications. The resistors R3 and R4 have the same specifications.

[0017] This invention achieves automatic light tracking entirely through circuit construction. Two photoresistors are installed symmetrically on the left and right or top and bottom of the solar panel, respectively, causing the motor to automatically rotate towards the side with stronger sunlight. This invention uses a purely hardware circuit construction, resulting in lower cost, more stable performance, no need for a programmable controller, enhanced real-time performance, and a lower failure rate.

[0018] This article uses specific examples to illustrate the inventive concept in detail. The description of the above embodiments is only for the purpose of helping to understand the core idea of ​​this utility model. It should be noted that any obvious modifications, equivalent substitutions or other improvements made by those skilled in the art without departing from the inventive concept should be included within the protection scope of this utility model.

Claims

1. An automatic light-tracking control circuit for photovoltaic panels, characterized in that, The system includes a voltage conversion module, a signal acquisition module, a signal comparison module, and a motor drive module. The voltage conversion module converts the voltage signal from the energy storage battery into a low-voltage signal (VCC) via a DC-DC step-down circuit. The signal acquisition module is powered by the VCC output from the voltage conversion module. VCC is connected to photoresistors R1 and R2 and resistors R3 and R4 to GND. Photoresistors R1 and R2 are mounted symmetrically on the left and right or top and bottom of the photovoltaic panel. The signal comparison module is powered by the VCC output from the voltage conversion module. VCC is connected to the power supply pin (VCC) of voltage comparator U1 via energy storage capacitor C1 and decoupling capacitor C2. The GND pin of voltage comparator U1 is connected to ground. The midpoints of photoresistors R1 and R2 are connected to the voltage comparator... The non-inverting input terminal IN1+ of channel one and the inverting input terminal IN2- of channel two of voltage comparator U1 are connected to the inverting input terminal IN1- of channel one and the non-inverting input terminal IN2+ of channel two of voltage comparator U1, respectively. The two output channels OUT1 and OUT2 of voltage comparator U1 are connected to the two input control channels IN1 and IN2 of motor driver U2, respectively. The motor drive module is powered by photovoltaic energy storage battery VBAT. VBAT is connected to the power supply pin VM of motor driver U2 through energy storage capacitor C3 and decoupling capacitor C4. The GND pin of motor driver U2 is connected to ground. The two output channels OUT1 and OUT2 of motor driver U2 are connected to the two ends of high-power DC gear reducer M1, respectively.

2. The photovoltaic panel automatic light tracking control circuit according to claim 1, characterized in that, The VCC voltage does not exceed the smaller of the maximum supply voltage of voltage comparator U1 and the maximum logic voltage of motor driver U2.

3. The photovoltaic panel automatic light tracking control circuit according to claim 2, characterized in that, The photoresistors R1 and R2 have the same specifications and models.

4. The photovoltaic panel automatic light tracking control circuit according to claim 3, characterized in that, The resistors R3 and R4 have the same specifications.

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