Intelligent solar cell panel volt-ampere tester based on Internet of Things

Abstract

The utility model provides an intelligent solar cell panel volt-ampere tester based on Internet of Things, which comprises a main board, a measuring module, a downloading module, a communication module and a voltage conversion module, compared with a photovoltaic IV tester, the volt-ampere tester has the advantages that the whole circuit is greatly simplified, the use cost is reduced, the communication module is used for wireless communication, and the intelligent solar cell panel volt-ampere tester is convenient to use. Data can be transmitted and recorded in real time by connecting an upper computer, the data can be safely stored, convenience is improved, remote monitoring and management are achieved, meanwhile, a voltage sampling circuit is designed in the measuring module, gears of measuring ranges are increased, and therefore measurement under different measuring ranges and precision requirements can be conveniently carried out; and the measurement adaptability of the volt-ampere tester is improved.

Description

Technical Field

[0001] The utility model belongs to the field of electronic technology, and in particular relates to an intelligent solar cell panel volt-ampere tester based on the Internet of Things. Background Art

[0002] Photovoltaic IV tester is a device that uses light energy to directly convert into electrical energy. Its function is to detect and evaluate the performance of the battery. It mainly evaluates the performance of solar cells by measuring their current and voltage characteristics. During the test, the solar cell will be exposed to sunlight, and the light energy will be converted into electrical energy and generate current through the battery. The tester will measure the current and voltage at the same time, and calculate the battery's power, efficiency and other parameters based on these data.

[0003] The existing photovoltaic IV tester has the following problems:

[0004] 1. Since photovoltaic IV testers usually require the use of high-precision measurement equipment and technology, the cost of the equipment is relatively high. This is a big burden for some small photovoltaic systems or users with limited budgets.

[0005] 2. The lack of automation and remote monitoring makes the testing efficiency and convenience of the smart solar panel volt-ampere tester relatively low. Utility Model Content

[0006] The purpose of the utility model is to solve the problems of the background technology and increase the gear selection of the range, and to provide an intelligent solar panel volt-ampere tester based on the Internet of Things;

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an intelligent solar panel volt-ampere tester based on the Internet of Things, comprising: a mainboard, a measuring module, a downloading module, a communication module and a voltage conversion module;

[0008] The mainboard is electrically connected to the measuring module, the downloading module, the communication module and the voltage conversion module respectively, and the voltage conversion module is electrically connected to the measuring module and the communication module respectively;

[0009] The measurement module includes an INA219 measurement circuit and a voltage sampling circuit, and the INA219 measurement circuit is electrically connected to the voltage sampling circuit.

[0010] Furthermore, the voltage sampling circuit includes: an adjustment switch, a first sliding rheostat, a second sliding rheostat, a capacitor, an LED lamp and a resistor;

[0011] The first interface of the adjustment switch is electrically connected to the first sliding rheostat, the third interface of the adjustment switch is electrically connected to the second sliding rheostat, and the second interface of the adjustment switch is electrically connected to one end of the capacitor and the pin VIN+ of the INA219 measurement circuit respectively;

[0012] One end of the first sliding rheostat is grounded, the other end of the first sliding rheostat is electrically connected to the second sliding rheostat, the second sliding rheostat is electrically connected to the negative pole of the LED lamp, the positive pole of the LED lamp is electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the measurement port VIN++.

[0013] Furthermore, the main board adopts a system board with ATMEGA328P minimum system as the core.

[0014] Furthermore, the download module includes a USB to serial port circuit, and the USB to serial port circuit adopts a download circuit with CH340G as the core.

[0015] Furthermore, the communication module is an esp01sWiFi module.

[0016] Furthermore, the voltage conversion module includes a 5V to 3.3 circuit, and the 5V to 3.3 circuit adopts a voltage conversion circuit with AMS1117-3.3 as the core.

[0017] Beneficial effects:

[0018] 1. Use the communication module for wireless communication, and connect to the host computer to enable real-time data transmission and recording, so that the data can be safely stored, improve convenience, and realize remote monitoring and management.

[0019] 2. A volt-ampere tester consisting of a mainboard, a measurement module, a download module, a communication module and a voltage conversion module is designed. Compared with a photovoltaic IV tester, the overall circuit of this volt-ampere tester is greatly simplified, thereby reducing the cost of use.

[0020] 3. A voltage sampling circuit is designed in the measurement module, and the range gears are increased to facilitate measurements under different ranges and accuracy requirements, thereby improving the adaptability of the volt-ampere tester measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the overall structural diagram of the utility model.

[0022] Figure 2 This is a circuit schematic diagram of the voltage sampling circuit in the utility model.

[0023] In the figure: 1. Main board, 2. Measurement module, 3. Download module, 4. Communication module, 5. Voltage conversion module. DETAILED DESCRIPTION

[0024] The utility model is further explained below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the utility model provides an intelligent solar panel volt-ampere tester based on the Internet of Things, including: a mainboard 1, a measurement module 2, a download module 3, a communication module 4 and a voltage conversion module 5.

[0026] The mainboard 1 is electrically connected to the measuring module 2, the downloading module 3, the communication module 4 and the voltage conversion module 5, respectively, and the voltage conversion module 5 is electrically connected to the measuring module 2 and the communication module 4, respectively. The mainboard 1 is used to supply power to the downloading module 3 and the voltage conversion module 5, and at the same time receive the current, voltage and power obtained by the measuring module 2, and send them to the communication module 4. The communication module 4 is used to receive the information sent by the mainboard 1 and send it to the host through the network. The downloading module 3 is used to download programs to the mainboard 1.

[0027] The measurement module 2 includes an INA219 measurement circuit and a voltage sampling circuit. The INA219 measurement circuit is electrically connected to the voltage sampling circuit and is used to measure the acquired current, voltage and power.

[0028] In this embodiment, the mainboard 1 adopts a system board with ATMEGA328P minimum system as the core, the download module 3 includes a USB to serial port circuit, the USB to serial port circuit adopts a download circuit with CH340G as the core, the communication module 4 is an esp01sWiFi module, and the voltage conversion module 5 includes a 5V to 3.3 circuit, and the 5V to 3.3 circuit adopts a voltage conversion circuit with AMS1117-3.3 as the core, wherein the INA219 circuit and the 3V3 pin of the ESP-01S module are connected to the INA219 circuit and the 3V3 pin of the ESP-01S module The SCL pin of the INA219 circuit is connected to the SCL pin of the system board with the ATMEGA328P minimum system as the core, the SDA pin of the INA219 circuit is connected to the SDA pin of the system board with the ATMEGA328P minimum system as the core, the TX pin of the esp01sWiFi module is connected to the PD6 pin of the system board with the ATMEGA328P minimum system as the core, and the RX pin of the sp01sWiFi module is connected to the PD7 pin of the system board with the ATMEGA328P minimum system as the core.

[0029] like Figure 2 As shown, the voltage sampling circuit includes: an adjustment switch, a first sliding rheostat, a second sliding rheostat, a capacitor, an LED lamp and a resistor.

[0030] The first interface of the adjustment switch is electrically connected to the first sliding rheostat, the third interface of the adjustment switch is electrically connected to the second sliding rheostat, and the second interface of the adjustment switch is electrically connected to one end of the capacitor and the pin VIN+ of the INA219 measurement circuit respectively.

[0031] One end of the first sliding rheostat is grounded, the other end of the first sliding rheostat is electrically connected to the second sliding rheostat, the second sliding rheostat is electrically connected to the negative pole of the LED lamp, the positive pole of the LED lamp is electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the measurement port VIN++.

[0032] in, Figure 2 The first interface is represented by 1, the second interface is represented by 2, and the third interface is represented by 3. When in use, the measurement information flows from the measurement port VIN++, passes through the voltage sampling circuit, and enters the pin VIN+ of the INA219 measurement circuit. In this process, according to the range and accuracy requirements, adjust the adjustment switch SW2. When the switch positions 2 and 1 inside SW2 are connected, the measurement range is 0-25V. When the switch positions 2 and 3 inside SW2 are connected, the measurement range is 0-500V. A 200Ω resistor R14 is connected in series to protect the circuit, and an LED light is used to display whether the circuit is connected normally. A capacitor of 0.047uf is used for filtering the voltage sampling circuit.

[0033] The utility model designs a volt-ampere tester consisting of a mainboard, a measuring module, a downloading module, a communication module and a voltage conversion module. Compared with a photovoltaic IV tester, the overall circuit of the volt-ampere tester is greatly simplified, reducing the use cost, and utilizing the communication module for wireless communication, and by connecting to a host computer, its data can be transmitted and recorded in real time, so that the data can be safely stored, improving convenience, and realizing remote monitoring and management. At the same time, a voltage sampling circuit is designed in the measuring module, and the range of gears is increased, thereby facilitating measurements under different ranges and accuracy requirements, and improving the adaptability of the volt-ampere tester for measurement.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Intelligent solar panel volt-ampere tester based on the Internet of Things, characterized by: include: Main board (1), measurement module (2), download module (3), communication module (4) and voltage conversion module (5); The mainboard (1) is electrically connected to the measuring module (2), the downloading module (3), the communication module (4) and the voltage conversion module (5), respectively, and the voltage conversion module (5) is electrically connected to the measuring module (2) and the communication module (4), respectively; The measurement module (2) comprises an INA219 measurement circuit and a voltage sampling circuit, and the INA219 measurement circuit is electrically connected to the voltage sampling circuit.

2. The intelligent solar panel volt-ampere tester based on the Internet of Things according to claim 1 is characterized in that: The voltage sampling circuit includes: an adjustment switch, a first sliding rheostat, a second sliding rheostat, a capacitor, an LED lamp and a resistor; The first interface of the adjustment switch is electrically connected to the first sliding rheostat, the third interface of the adjustment switch is electrically connected to the second sliding rheostat, and the second interface of the adjustment switch is electrically connected to one end of the capacitor and the pin VIN+ of the INA219 measurement circuit respectively; One end of the first sliding rheostat is grounded, the other end of the first sliding rheostat is electrically connected to the second sliding rheostat, the second sliding rheostat is electrically connected to the negative pole of the LED lamp, the positive pole of the LED lamp is electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the measurement port VIN++.

3. The intelligent solar panel volt-ampere tester based on the Internet of Things according to claim 1 is characterized in that: The main board (1) adopts a system board with the ATMEGA328P minimum system as the core.

4. The intelligent solar panel volt-ampere tester based on the Internet of Things according to claim 1 is characterized in that: The download module (3) comprises a USB to serial port circuit, and the USB to serial port circuit adopts a download circuit with CH340G as the core.

5. The intelligent solar panel volt-ampere tester based on the Internet of Things according to claim 1 is characterized in that: The communication module (4) is an esp01sWiFi module.

6. The intelligent solar panel volt-ampere tester based on the Internet of Things according to claim 1, characterized in that: The voltage conversion module (5) comprises a 5V to 3.3V circuit, and the 5V to 3.3V circuit adopts a voltage conversion circuit with AMS1117-3.3 as the core.

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