A photovoltaic protocol converter test device

Abstract

The application provides a photovoltaic protocol converter testing device, comprising a storage chip, a controller, an expansion conversion board, an interface conversion board and a photovoltaic protocol converter testing station; wherein the storage chip is in communication connection with the first end of the controller; the second end of the controller is in communication connection with the first end of the expansion conversion board; the second end of the expansion conversion board is in communication connection with the first end of the interface conversion board; and the second end of the interface conversion board is in communication connection with the photovoltaic protocol converter testing station. The photovoltaic protocol converter testing device provided by the application can simulate the sending instruction of the marketing master station and the receiving data of various inverters through the controller, and can test the photovoltaic protocol converter on the photovoltaic protocol converter testing station through the transmission of data by the expansion conversion board and the interface conversion board, thereby improving the testing efficiency of the photovoltaic protocol converter.

Description

Technical Field

[0001] This utility model relates to the field of automated testing technology, and more specifically, to a photovoltaic protocol converter testing device. Background Technology

[0002] my country's traditional power grid has a radial structure, and distribution network protection is designed according to a single flow direction. The integration of distributed generation has significantly altered the power flow distribution in the distribution network, leading to problems such as malfunctions in distribution network protection. Currently, protection devices for distributed generation mainly focus on switching functions, but flexible control functions are being gradually added. Because different inverters have different communication interfaces and protocols than the State Grid marketing main station's 698.45 protocol, a photovoltaic protocol converter is needed to convert the inverter's protocol when performing flexible control via the inverter. Since there are many inverter manufacturers and models on the market, each with different protocols, the photovoltaic protocol converter needs to be tested before being put into use to determine its compatibility with the corresponding inverter's communication protocol.

[0003] The existing photovoltaic protocol converter testing technology involves first identifying the inverter model that needs protocol conversion, then purchasing the inverter, obtaining the communication protocol, performing preliminary debugging before leaving the factory, and then conducting actual joint debugging on-site. This process consumes a lot of time and resources. Moreover, as the number of inverters requiring protocol conversion increases, the number of inverters that need to be purchased also increases. After the protocol debugging is completed, the inverters have no other use, resulting in a large waste of resources and low testing efficiency for photovoltaic protocol converters. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a photovoltaic protocol converter testing device, which can simulate the sending instructions of the marketing master station and the receiving data of various inverters through the controller, and transmit data through the expansion conversion board and the interface conversion board to test the photovoltaic protocol converter at the photovoltaic protocol converter testing station, thereby improving the testing efficiency of the photovoltaic protocol converter.

[0005] In a first aspect, embodiments of this application provide a photovoltaic protocol converter testing device, which includes: a memory chip, a controller, an expansion conversion board, an interface conversion board, and a photovoltaic protocol converter testing station; The memory chip is communicatively connected to the first end of the controller; the second end of the controller is communicatively connected to the first end of the expansion conversion board; the second end of the expansion conversion board is communicatively connected to the first end of the interface conversion board; and the second end of the interface conversion board is communicatively connected to the photovoltaic protocol converter test station.

[0006] Further, the second end of the controller includes a first USB interface and a second USB interface; the first end of the expansion conversion board includes a third USB interface and a fourth USB interface, and the second end of the expansion conversion board includes a first UART interface, a second UART interface, a third UART interface, and a fourth UART interface; the first end of the interface conversion board includes a fifth UART interface, a sixth UART interface, a seventh UART interface, and an eighth UART interface, and the second end of the interface conversion board includes a first RS485 interface, a second RS485 interface, a third RS485 interface, and a fourth RS485 interface; wherein, the first USB interface and the third USB interface are communicatively connected, and the second USB interface and the fourth USB interface are communicatively connected. The system includes: SB interface communication connection; communication connections between the first UART interface and the fifth UART interface, the second UART interface and the sixth UART interface, the third UART interface and the seventh UART interface, and the fourth UART interface and the eighth UART interface; communication connections between the first RS485 interface and the input terminal of the photovoltaic protocol converter test station, the second RS485 interface and the first output terminal of the photovoltaic protocol converter test station, the third RS485 interface and the second output terminal of the photovoltaic protocol converter test station, and the fourth RS485 interface and the third output terminal of the photovoltaic protocol converter test station.

[0007] Furthermore, the photovoltaic protocol converter testing device also includes a photovoltaic protocol converter detection module and a power supply switch module; wherein, the first end of the photovoltaic protocol converter detection module is communicatively connected to the controller, and the second end of the photovoltaic protocol converter detection module is communicatively connected to the photovoltaic protocol converter testing station; the power supply switch module is electrically connected to the controller, the photovoltaic protocol converter testing station, and the photovoltaic protocol converter detection module respectively, and the power supply switch module is communicatively connected to the controller.

[0008] Furthermore, the photovoltaic protocol converter detection module includes an infrared transmitting module and an infrared receiving module; wherein, the input terminal of the infrared transmitting module and the output terminal of the infrared receiving module are respectively communicatively connected to the controller; the output terminal of the infrared transmitting module is communicatively connected to the input terminal of the infrared receiving module through the photovoltaic protocol converter test station; the power supply switch module is electrically connected to the infrared transmitting module and the infrared receiving module respectively.

[0009] Furthermore, the infrared transmitting module includes a first resistor, a transistor, a second resistor, an infrared driver chip, an infrared emitting diode, and a third resistor; wherein, the first end of the first resistor is communicatively connected to the controller, and the second ends of the first resistor and the first ends of the second resistor are connected to the base of the transistor; the second end of the second resistor and the power supply switch module are connected to the emitter of the transistor; the collector of the transistor is connected to the first input terminal of the infrared driver chip; the second input terminal of the infrared driver chip is connected to the power supply switch module, and the output terminal of the infrared driver chip is connected to the input terminal of the infrared emitting diode; the output terminal of the infrared emitting diode is connected to the first end of the third resistor; and the second end of the third resistor is grounded.

[0010] Furthermore, the infrared receiving module includes a fourth resistor, a fifth resistor, a first capacitor, and an infrared receiving chip; wherein, the first end of the fourth resistor is connected to the power supply switch module, the second end of the fourth resistor is connected to the first end of the fifth resistor and the output end of the infrared receiving chip; the second end of the fifth resistor is communicatively connected to the controller; the first end of the first capacitor is connected to the second end of the fifth resistor, and the second end of the first capacitor is grounded; the input end of the infrared receiving chip is communicatively connected to the infrared emitting diode through the photovoltaic protocol converter test station, and the second input end of the infrared receiving chip is connected to the power supply switch module.

[0011] Furthermore, the photovoltaic protocol converter testing device also includes a display module; wherein the display module is communicatively connected to the controller via an HDMI interface.

[0012] Optionally, the controller is a motherboard with model number RK3568.

[0013] Optionally, the expansion conversion board is an expansion conversion board with model number EX-board-V1.0.

[0014] Optionally, the interface conversion board is an interface conversion board with model number INTER-board-V1.0.

[0015] This application provides a photovoltaic protocol converter testing device, including a memory chip, a controller, an expansion conversion board, an interface conversion board, and a photovoltaic protocol converter testing station. The memory chip is communicatively connected to a first terminal of the controller; a second terminal of the controller is communicatively connected to a first terminal of the expansion conversion board; a second terminal of the expansion conversion board is communicatively connected to a first terminal of the interface conversion board; and a second terminal of the interface conversion board is communicatively connected to the photovoltaic protocol converter testing station. The photovoltaic protocol converter testing device provided by this application can simulate the sending commands of a marketing master station and the receiving data of various inverters through the controller, and transmit data through the expansion conversion board and the interface conversion board to test the photovoltaic protocol converter at the testing station, thereby improving the testing efficiency of the photovoltaic protocol converter.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This illustration shows one of the structural schematic diagrams of a photovoltaic protocol converter testing device provided in an embodiment of this application; Figure 2 This is a second schematic diagram of the structure of a photovoltaic protocol converter test device provided in an embodiment of this application; Figure 3 A circuit diagram of the infrared emitting module in an embodiment of this application is shown; Figure 4 A circuit diagram of the infrared receiving module in an embodiment of this application is shown.

[0019] Reference numerals: 100-Photovoltaic protocol converter test device; 110-Memory chip; 120-Controller; 130-Expansion conversion board; 140-Interface conversion board; 150-Photovoltaic protocol converter test station; 160-Photovoltaic protocol converter detection module; 170-Power supply switch module; 161-Infrared transmitting module; 162-Infrared receiving module; 180-Display module; R1-First resistor; P1-Transistor; R2-Second resistor; U1-Infrared driver chip; D1-Infrared emitting diode; R3-Third resistor; R4-Fourth resistor; R5-Fifth resistor; C1-First capacitor; U2-Infrared receiving chip. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] To enable those skilled in the art to utilize the content of this application, and in conjunction with the specific application scenario of "photovoltaic protocol converter testing," the following implementation method is provided. For those skilled in the art, the general principles defined herein can be applied to other embodiments and application scenarios without departing from the spirit and scope of this application. Although this application primarily describes "photovoltaic protocol converter testing," it should be understood that this is merely an exemplary embodiment.

[0025] The existing photovoltaic protocol converter testing technology involves first identifying the inverter model that needs protocol conversion, then purchasing the inverter, obtaining the communication protocol, performing preliminary debugging before leaving the factory, and then conducting actual joint debugging on-site. This process consumes a lot of time and resources. Moreover, as the number of inverters requiring protocol conversion increases, the number of inverters that need to be purchased also increases. After the protocol debugging is completed, the inverters have no other use, resulting in a large waste of resources and low testing efficiency for photovoltaic protocol converters.

[0026] To overcome the above-mentioned defects, this application provides a photovoltaic protocol converter testing device, which can simulate the sending instructions of the marketing master station and the receiving data of various inverters through the controller, and test the photovoltaic protocol converter at the photovoltaic protocol converter testing station by transmitting data through the expansion conversion board and the interface conversion board, thereby improving the testing efficiency of the photovoltaic protocol converter.

[0027] Please see Figure 1 , Figure 1 This is one of the structural schematic diagrams of a photovoltaic protocol converter testing device provided in an embodiment of this application. Figure 1 The photovoltaic protocol converter testing device 100 provided in this application embodiment includes: a memory chip 110, a controller 120, an expansion conversion board 130, an interface conversion board 140, and a photovoltaic protocol converter testing station 150; Among them, the memory chip 110 is communicatively connected to the first end of the controller 120; the second end of the controller 120 is communicatively connected to the first end of the expansion conversion board 130; the second end of the expansion conversion board 130 is communicatively connected to the first end of the interface conversion board 140; and the second end of the interface conversion board 140 is communicatively connected to the photovoltaic protocol converter test station 150.

[0028] In this embodiment, the storage chip 110 is used to store the sending instructions of the simulated marketing master station and the receiving data of the simulated inverters from different manufacturers and models. Specifically, the storage chip 110 can be a non-volatile memory, such as flash memory or EEPROM, used to store test results and system configuration information for a long time.

[0029] During testing, the controller 120 sends the simulated marketing master station's sending instructions (698.45 protocol instructions) stored in the storage chip 110 to the photovoltaic protocol test converter installed on the photovoltaic protocol converter test station 150 via the expansion conversion board 130 and the interface conversion board 140. It receives the corresponding inverter protocol data returned by the photovoltaic protocol test converter through the interface conversion board 140 and the expansion conversion board 130, and judges whether the photovoltaic protocol inverter under test has correctly returned the corresponding inverter protocol data by comparing the received data of simulated inverters of different manufacturers and models stored in the storage chip 110. Alternatively, during testing, the storage chip 110 can store data from simulated inverters of different manufacturers and models, which is transmitted via expansion conversion board 130 and interface conversion board 140 to the photovoltaic protocol test converter installed at the photovoltaic protocol converter test station 150. The test converter receives instructions from the marketing master station protocol returned by the photovoltaic protocol test converter through interface conversion board 140 and expansion conversion board 130, and uses the simulated marketing master station transmission instructions (698.45 protocol instructions) stored in the storage chip 110 to determine whether the tested photovoltaic protocol inverter correctly returned the 698.45 protocol instructions. Furthermore, the test results are stored in the storage chip 110 or in the FLASH memory of the controller 120 for review by test personnel.

[0030] The expansion conversion board 130 is used to convert the sending instructions (698 protocol instructions) of the marketing master station simulated by the control module 120 or the instructions of the inverter protocol simulated by the control module 120 of different manufacturers and models into serial port signals, and to convert the serial port signals returned by the photovoltaic protocol converter through the interface conversion board 140 into the corresponding inverter protocol instructions or marketing master station protocol instructions.

[0031] The interface conversion board 140 is used to convert serial port signals into RS485 signals that can be recognized by the photovoltaic protocol converter, and to convert the RS485 signals returned by the photovoltaic protocol converter into serial port signals.

[0032] The photovoltaic protocol converter test station 150 is used to place and test the photovoltaic protocol converter. Specifically, the test station 150 provides a test environment that allows the photovoltaic protocol converter to be connected to the second end of the interface conversion board 140 when placed in the photovoltaic protocol converter test station 150, thereby simulating the communication protocol conversion process under actual working conditions.

[0033] Further, please refer to Figure 2 , Figure 2 This is a second functional block diagram of a photovoltaic protocol converter testing device provided in an embodiment of this application. Figure 2As shown, the second end of the controller 120 includes a first USB interface and a second USB interface; the first end of the expansion conversion board 130 includes a third USB interface and a fourth USB interface, and the second end of the expansion conversion board 130 includes a first UART interface, a second UART interface, a third UART interface, and a fourth UART interface; the first end of the interface conversion board 140 includes a fifth UART interface, a sixth UART interface, a seventh UART interface, and an eighth UART interface, and the second end of the interface conversion board 140 includes a first RS484 interface, a second RS485 interface, a third RS485 interface, and a fourth RS485 interface; wherein, the first USB interface and the third USB interface are communicatively connected. The second USB interface and the fourth USB interface are connected for communication; the first UART interface and the fifth UART interface are connected for communication, the second UART interface and the sixth UART interface are connected for communication, the third UART interface and the seventh UART interface are connected for communication, and the fourth UART interface and the eighth UART interface are connected for communication; the first RS485 interface is connected for communication with the input terminal of the protocol converter test station 150, the second RS485 interface is connected for communication with the first output terminal of the protocol converter test station 150, the third RS485 interface is connected for communication with the second output terminal of the protocol converter test station 150, and the fourth RS485 interface is connected for communication with the third output terminal of the protocol converter test station 150.

[0034] In this embodiment, the expansion conversion board 130 expands the two USB signals of the controller 120 into four UART signals; the interface conversion board 140 converts the four UART signals into RS485 signals respectively, and connects them to the input terminal, first output terminal, second output terminal and third output terminal of the photovoltaic protocol converter test station 150, respectively, to correspond to the one-input three-output structure of the photovoltaic protocol converter.

[0035] Furthermore, the photovoltaic protocol converter testing device 100 also includes a photovoltaic protocol converter detection module 160 and a power supply switch module 170; wherein, the first end of the photovoltaic protocol converter detection module 160 is communicatively connected to the controller 120, and the second end of the photovoltaic protocol converter detection module 160 is communicatively connected to the photovoltaic protocol converter testing station 150; the power supply switch module 170 is electrically connected to the controller 120, the photovoltaic protocol converter testing station 150 and the photovoltaic protocol converter detection module 160 respectively, and the power supply switch module is communicatively connected to the controller 120.

[0036] In this embodiment, the photovoltaic protocol converter detection module 160 is used to detect whether a photovoltaic protocol converter for testing is placed in the photovoltaic protocol converter test station 150. Specifically, if a photovoltaic protocol converter for testing is detected in the photovoltaic protocol converter test station 150, the photovoltaic protocol converter detection module 160 sends a trigger signal to the controller 120 via GPIO. After receiving the trigger signal, the controller 120 sends a power supply signal to the power supply switch module 170 via another GPIO. After receiving the power supply signal, the power supply switch module 170 supplies 220V power to the photovoltaic protocol converter for testing in the photovoltaic protocol converter test station 150. The controller 120 starts testing after the power supply switch module 170 supplies power to the photovoltaic protocol converter for testing for a preset time. In this embodiment, the preset time is set to 1 second.

[0037] The power supply switch module 170 is used to supply power to the control module 120, the photovoltaic protocol converter detection module 160, and the photovoltaic protocol converter test station 150 for testing.

[0038] Furthermore, such as Figure 2 As shown, the photovoltaic protocol converter detection module 160 includes an infrared transmitting module 161 and an infrared receiving module 162; wherein, the input terminal of the infrared transmitting module 161 and the output terminal of the infrared receiving module 162 are respectively communicatively connected to the controller 120; the output terminal of the infrared transmitting module 161 is communicatively connected to the input terminal of the infrared receiving module 162 through the photovoltaic protocol converter test station 150; the power supply switch module 170 is electrically connected to the infrared transmitting module 161 and the infrared receiving module 162 respectively.

[0039] In this embodiment, during the operation of the photovoltaic protocol converter testing device 100, the power supply switch module 170 supplies power to the infrared transmitting module 161 and the infrared receiving module 162 respectively; the controller 120 controls the infrared transmitting module 161 to continuously transmit infrared signals to the photovoltaic protocol converter testing station 150. When a photovoltaic protocol converter is placed in the photovoltaic protocol converter testing station 150, the infrared receiving module 162 can receive the infrared signal transmitted by the infrared transmitting module 161 through the reflection of the photovoltaic protocol converter, and send a feedback signal to the controller 120; the controller 120 controls the power supply switch module 170 to supply power to the photovoltaic protocol converter in the photovoltaic protocol converter testing station 150 according to the feedback signal of the infrared receiving module 162.

[0040] Further, please refer to Figure 3 , Figure 3 This is a circuit diagram of the infrared emitting module in an embodiment of this application. Figure 3As shown, the infrared transmitting module 161 includes a first resistor R1, a transistor P1, a second resistor R2, an infrared driver chip U1, an infrared emitting diode D1, and a third resistor R3. The first terminal of the first resistor R1 is communicatively connected to the controller 120; the second terminal of the first resistor R1 and the first terminal of the second resistor R2 are connected to the base of the transistor P1; the second terminal of the second resistor R2 and the power supply switch module 170 are connected to the emitter of the transistor P1; the collector of the transistor P1 is connected to the first input terminal of the infrared driver chip U1; the second input terminal of the infrared driver chip U1 is connected to the power supply switch module 170; the output terminal of the infrared driver chip U1 is connected to the input terminal of the infrared emitting diode D1; the output terminal of the infrared emitting diode D1 is connected to the first terminal of the third resistor R3; and the second terminal of the third resistor R3 is grounded.

[0041] In this embodiment, the first resistor R1 is a current-limiting resistor used to control the current flowing through the transistor P1; the transistor P1 is an NPN transistor used to control the switching of the infrared driver chip U1 according to the control instructions of the controller 120; the infrared driver chip U1 is used to control the switching state of the infrared emitting diode to achieve infrared signal modulation; the power supply switch module 170 is used to supply power to the infrared driver chip U1; the infrared emitting diode D1 is used to convert the electrical signal into an infrared light signal and emit it; the second resistor R2 and the third resistor R3 are current-limiting resistors used to control the current flowing through the infrared emitting diode D1 to ensure its stable operation. In a preferred embodiment of this application, the transistor P1 is a transistor of model MMBT3906LT1G, the infrared driver chip U1 is an infrared driver chip of model SN74LVC1G3157DBVR, and the infrared emitting diode D1 is an infrared diode of model TEAL6200.

[0042] Further, please refer to Figure 4 , Figure 4 This is a circuit diagram of the infrared receiving module in an embodiment of this application. Figure 4 As shown, the infrared receiving module 162 includes a fourth resistor R4, a fifth resistor R5, a first capacitor C1, and an infrared receiving chip U2. The first end of the fourth resistor R4 is connected to the power supply switch module 170, and the second end of the fourth resistor R4 is connected to the first end of the fifth resistor R5 and the output terminal of the infrared receiving chip U2. The second end of the fifth resistor R5 is communicatively connected to the controller 120. The first end of the first capacitor C1 is connected to the second end of the fifth resistor R5, and the second end of the first capacitor C1 is grounded. The first input terminal of the infrared receiving chip U2 is communicatively connected to the infrared emitting diode D1 through the photovoltaic protocol converter test station 150, and the second input terminal of the infrared receiving chip U2 is connected to the power supply switch module 170. In a preferred embodiment of this application, the infrared receiving chip U2 is a TSOP34138 infrared receiving chip.

[0043] In this embodiment, the fifth resistor R5 and the first capacitor C1 together form an RC circuit to filter out high-frequency noise on the power line and protect the circuit for stable operation; the fourth resistor R4 acts as a pull-up resistor, keeping the signal connected to the controller 120 at a high level when the infrared receiver chip U2 does not receive an infrared signal; when the infrared receiver chip U2 receives an infrared signal sent by the infrared emitting diode D1, the output terminal of the infrared receiver chip U2 outputs a low-level signal to the controller 120 as a feedback signal to confirm that a photovoltaic protocol converter for testing is placed in the photovoltaic protocol converter test station 150; the power supply switch module 170 is also used to provide a pull-up voltage for the fifth resistor R5 and to power the infrared receiver chip U2.

[0044] Furthermore, such as Figure 2 As shown, the photovoltaic protocol converter test device 100 also includes a display module 180; wherein the display module 180 is connected to the controller 120 via an HDMI interface.

[0045] In this embodiment, the display module 180 is used to display or store the test results stored in the chip 110 or controller 120 to determine whether the photovoltaic protocol converter being tested can match various inverter protocols.

[0046] Furthermore, the controller 120 is also connected to a cloud server via an Ethernet interface; the controller 120 is also used to update the inverter protocol stored in the storage chip 110 in real time via the cloud server, and to upload the test results stored in the storage chip 110 or the controller 120 to the cloud server for storage or further analysis.

[0047] Furthermore, after the test is completed, the controller 120 controls the power supply switch module 170 via GPIO to stop supplying power to the photovoltaic protocol converter placed in the photovoltaic protocol converter test station 150, so as to ensure the safety of the test personnel when removing the photovoltaic protocol converter from the photovoltaic protocol converter test station 150.

[0048] In a preferred embodiment of this application, the controller 120 is a motherboard with model number RK3568.

[0049] In a preferred embodiment of this application, the expansion conversion board 130 is an expansion conversion board with model number EX-board-V1.0.

[0050] In a preferred embodiment of this application, the interface conversion board 140 is an interface conversion board with model number INTER-board-V1.0.

[0051] This application provides a photovoltaic protocol converter testing device, including a memory chip, a controller, an expansion conversion board, an interface conversion board, and a photovoltaic protocol converter testing station. The memory chip is communicatively connected to a first terminal of the controller; a second terminal of the controller is communicatively connected to a first terminal of the expansion conversion board; a second terminal of the expansion conversion board is communicatively connected to a first terminal of the interface conversion board; and a second terminal of the interface conversion board is communicatively connected to the photovoltaic protocol converter testing station. The photovoltaic protocol converter testing device provided by this application can simulate the sending commands of a marketing master station and the receiving data of various inverters through the controller, and transmit data through the expansion conversion board and the interface conversion board to test the photovoltaic protocol converter at the testing station, thereby improving the testing efficiency of the photovoltaic protocol converter.

[0052] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A photovoltaic protocol converter testing device, characterized in that, The photovoltaic protocol converter testing device includes: a memory chip, a controller, an expansion conversion board, an interface conversion board, and a photovoltaic protocol converter testing station; The memory chip is communicatively connected to the first end of the controller; the second end of the controller is communicatively connected to the first end of the expansion conversion board; the second end of the expansion conversion board is communicatively connected to the first end of the interface conversion board; and the second end of the interface conversion board is communicatively connected to the photovoltaic protocol converter test station.

2. The photovoltaic protocol converter testing device according to claim 1, characterized in that, The controller's second end includes a first USB interface and a second USB interface; the expansion conversion board's first end includes a third USB interface and a fourth USB interface, and the expansion conversion board's second end includes a first UART interface, a second UART interface, a third UART interface, and a fourth UART interface; the interface conversion board's first end includes a fifth UART interface, a sixth UART interface, a seventh UART interface, and an eighth UART interface, and the interface conversion board's second end includes a first RS485 interface, a second RS485 interface, a third RS485 interface, and a fourth RS485 interface; wherein, the first USB interface and the third USB interface are communicatively connected, and the second USB interface and the fourth USB interface are communicatively connected. The system includes the following communication connections: the first UART interface is connected to the fifth UART interface, the second UART interface is connected to the sixth UART interface, the third UART interface is connected to the seventh UART interface, and the fourth UART interface is connected to the eighth UART interface; the first RS485 interface is connected to the input terminal of the photovoltaic protocol converter test station, the second RS485 interface is connected to the first output terminal of the photovoltaic protocol converter test station, the third RS485 interface is connected to the second output terminal of the photovoltaic protocol converter test station, and the fourth RS485 interface is connected to the third output terminal of the photovoltaic protocol converter test station.

3. The photovoltaic protocol converter testing device according to claim 1, characterized in that, The photovoltaic protocol converter testing device further includes a photovoltaic protocol converter detection module and a power supply switch module; wherein, the first end of the photovoltaic protocol converter detection module is communicatively connected to the controller, and the second end of the photovoltaic protocol converter detection module is communicatively connected to the photovoltaic protocol converter testing station; the power supply switch module is electrically connected to the controller, the photovoltaic protocol converter testing station, and the photovoltaic protocol converter detection module respectively, and the power supply switch module is communicatively connected to the controller.

4. The photovoltaic protocol converter testing device according to claim 3, characterized in that, The photovoltaic protocol converter testing module includes an infrared transmitting module and an infrared receiving module; wherein, the input terminal of the infrared transmitting module and the output terminal of the infrared receiving module are respectively communicatively connected to the controller; the output terminal of the infrared transmitting module is communicatively connected to the input terminal of the infrared receiving module through the photovoltaic protocol converter test station; the power supply switch module is electrically connected to the infrared transmitting module and the infrared receiving module respectively.

5. The photovoltaic protocol converter testing device according to claim 4, characterized in that, The infrared transmitting module includes a first resistor, a transistor, a second resistor, an infrared driver chip, an infrared emitting diode, and a third resistor. The first terminal of the first resistor is communicatively connected to the controller; the second terminals of the first and second resistors are connected to the base of the transistor; the second terminal of the second resistor and the power supply switch module are connected to the emitter of the transistor; the collector of the transistor is connected to the first input terminal of the infrared driver chip; the second input terminal of the infrared driver chip is connected to the power supply switch module; the output terminal of the infrared driver chip is connected to the input terminal of the infrared emitting diode; the output terminal of the infrared emitting diode is connected to the first terminal of the third resistor; and the second terminal of the third resistor is grounded.

6. The photovoltaic protocol converter testing device according to claim 5, characterized in that, The infrared receiving module includes a fourth resistor, a fifth resistor, a first capacitor, and an infrared receiving chip. The first end of the fourth resistor is connected to the power supply switch module, and the second end of the fourth resistor is connected to the first end of the fifth resistor and the output terminal of the infrared receiving chip. The second end of the fifth resistor is communicatively connected to the controller. The first end of the first capacitor is connected to the second end of the fifth resistor, and the second end of the first capacitor is grounded. The input terminal of the infrared receiving chip is communicatively connected to the infrared emitting diode through the photovoltaic protocol converter test station, and the second input terminal of the infrared receiving chip is connected to the power supply switch module.

7. The photovoltaic protocol converter testing device according to claim 1, characterized in that, The photovoltaic protocol converter testing device also includes a display module; wherein the display module is connected to the controller via an HDMI interface.

8. The photovoltaic protocol converter testing device according to claim 1, characterized in that, The controller is a motherboard with model number RK3568.

9. The photovoltaic protocol converter testing device according to claim 1, characterized in that, The expansion conversion board is model EX-board-V1.

0.

10. The photovoltaic protocol converter testing device according to claim 1, characterized in that, The interface conversion board is model number INTER-board-V1.0.

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