A photovoltaic inverter blockchain reconstruction device based on RTU / DTU equipment

Abstract

The application discloses a photovoltaic inverter blockchain transformation device based on an RTU / DTU device, relates to the technical field of photovoltaic inverter blockchain transformation, and comprises an RTU / DTU device, a blockchain data chaining module and a data security and tamper-proof module. The photovoltaic inverter and the intelligent gateway are connected through the 485 aviation plug, the safety of data and the accuracy of collection are enhanced by using the innovative data packet multi-address asymmetric mapping technology, the device comprises the blockchain data chaining module, the data is encrypted by using the blockchain algorithm provided by the Ant Group and is uploaded to the Ant Group blockchain server, the safety of data is ensured, the data security and tamper-proof module protects the photovoltaic asset data by using the tamper-proof technology of the blockchain, the data buffer and the network interruption and retransmission mechanism of the RTU / DTU device are combined, the integrity and reliability of data are ensured, and therefore the data management and safety protection level of the photovoltaic system are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic inverter blockchain transformation technology, specifically a photovoltaic inverter blockchain transformation device based on RTU / DTU equipment. Background Technology

[0002] Blockchain is a new application model of computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanism, and encryption algorithm. This transformation device aims to upgrade photovoltaic inverters intelligently by integrating RTU (Remote Terminal Unit) / DTU (Data Transmission Unit) equipment with blockchain technology. This upgrade not only improves the remote monitoring and management capabilities of photovoltaic inverters, but also enhances the security and transparency of data through blockchain technology.

[0003] The shortcomings of existing blockchain transformation devices are:

[0004] 1. Patent document CN113064675B discloses an inheritable lossless blockchain transformation method. "This invention provides an inheritable lossless blockchain transformation method. Based on a consortium blockchain, this invention performs inheritance-based transformation, reusing open-source code (including but not limited to node code and fully functional software development kits) as much as possible, reducing development costs; simultaneously, all runnable smart contracts on the consortium blockchain can run on this system; furthermore, due to the decentralized user authentication system based on elliptic curve algorithms, users can easily use the system." However, existing lossless blockchain transformation methods suffer from technical problems such as low reliability of data acquisition processes and low data management security protection.

[0005] 2. Patent document CN113888165A discloses a method, device, and storage medium for address modification and identity authentication in blockchain. "This invention belongs to the field of computer technology, and particularly relates to a method, device, and storage medium for address modification and identity authentication in blockchain. The advantage of this invention is that it ensures that users do not reveal their personal information when registering an address, and only provides ID card information when identity verification is required (such as asset retrieval), thus ensuring user privacy and security. On the other hand, the identity hash is obtained by performing N hash operations on the first random string, identity information, and private information, instead of the conventional method of directly using the ID card number for hash operations. This avoids hackers from using the encoding rules of ID cards or collecting a large amount of ID card information to perform brute-force attacks and correspond them with account addresses to obtain user identity information. The hashN operation is used to increase the cost of address information cracking and increase the cracking time. The time to obtain the identity hash is set by setting N, making it impossible for hackers to try various combinations multiple times in a short period of time to form a brute-force attack." However, the existing blockchain address modification and identity authentication methods have technical problems such as poor environmental adaptability and the inability to maintain stable data transmission over a long period of time.

[0006] 3. Patent document CN117640093A discloses a method, system, storage medium, and computing device for blockchain digital signature modification. The invention discloses a method, system, storage medium, and computing device for blockchain digital signature modification, including: a server counting on-chain nodes and collecting the public keys P of each node; the server issuing a data upload request and generating a message push list M; the node signing the upload message using its public key to generate signature information S; the server using an algorithm to generate an aggregate signature AggS from the signature information S, the public key information P, and the message list M; and the server directly verifying the aggregate signature AggS to ensure the authenticity of the upload data. The invention directly generates aggregate signature information by halving the public keys P of multiple nodes, the message push list M of node transactions, and the signature information S, thereby improving the verification speed between nodes and increasing on-chain storage space. However, existing blockchain digital signature modification methods suffer from the technical problem of easily causing excessively high temperatures during use, leading to reduced device operating efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide a photovoltaic inverter blockchain transformation device based on RTU / DTU equipment to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic inverter blockchain transformation device based on RTU / DTU equipment, comprising an RTU / DTU device, a blockchain data uploading module, and a data security and immutability module. The RTU / DTU device is connected to the photovoltaic inverter and the smart gateway via a 485 aviation connector and uses Modbus or MQTT communication protocols for data interaction.

[0009] The RTU / DTU device employs an innovative data packet multi-address asymmetric mapping technology to collect raw data from photovoltaic inverters and smart gateways. The principle of this technology is as follows: multiple address information in the data packets sent by the photovoltaic inverters and smart gateways are converted through asymmetric mapping rules, making the data corresponding to each address unique and unpredictable during the collection process, thereby enhancing data security and collection accuracy.

[0010] The blockchain data upload module is used to encrypt the data collected by RTU / DTU devices using the blockchain algorithm provided by Ant Financial and upload it to the Ant Financial blockchain server. The encryption process includes using Ant Financial's unique encryption and signature methods. The execution process is as follows: First, the data is hashed to generate a data digest. Then, the data digest is signed using a private key. Finally, the signature, the original data, and the public key are uploaded to the blockchain to ensure data security.

[0011] The data security and immutability module is used to ensure that photovoltaic asset data cannot be maliciously modified or deleted once it is uploaded to the blockchain through blockchain immutability technology, and combined with the data caching and retransmission mechanism of RTU / DTU equipment, it ensures the integrity of the data.

[0012] Preferably, the device is installed manually, which does not damage the original hardware structure of the photovoltaic inverter and smart gateway. It is suitable for photovoltaic inverters and smart gateway devices with reserved interfaces and does not require modification of the original firmware.

[0013] Preferably, the RTU / DTU device, the photovoltaic inverter, and the smart gateway are all equipped with a sealed interface assembly, which is used to seal and protect the 485 aviation plug.

[0014] Preferably, the sealed interface assembly includes a 485 aviation interface, and the 485 aviation interface is respectively disposed on the outer wall of the RTU / DTU equipment, the photovoltaic inverter and the smart gateway. The inner wall of the 485 aviation interface is covered with a rubber sealing gasket, and the other side of the rubber sealing gasket is in close contact with the outer wall of the 485 aviation connector.

[0015] Preferably, a protective sleeve is fixedly connected to the tail end of the outer wall of the 485 aviation interface. A set of arc-shaped grooves is opened at the tail end of the outer wall of the protective sleeve. A first pressure spring is installed inside the arc-shaped grooves. A first moving block is movably connected to the inner wall of the arc-shaped grooves. One end of the first moving block is set at the other end of the first pressure spring. A rotating ring is provided at the tail end of the outer wall of the protective sleeve. The inner wall of the rotating ring is installed on the outer wall of the first moving block. Several ropes are fixedly connected to the tail end of the rotating ring.

[0016] Preferably, a waterproof cover is installed at the tail end of the inner wall of the protective sleeve, an elastic sealing ring is installed at one end of the waterproof cover, a plurality of fixing blocks are fixedly connected to one side of the elastic sealing ring, and the outer wall of the fixing blocks is fixedly connected to the other end of the rope. A plurality of limiting rings are installed at the tail end of the protective sleeve, and the inner wall of the limiting rings is movably connected to the outer wall of the rope.

[0017] Preferably, the outer walls of the RTU / DTU device, photovoltaic inverter, and smart gateway are all movably connected to a detachable heat dissipation box. A cooling fin is installed on one side of the heat dissipation box, and the cooling fin is in close contact with the surface of the RTU / DTU device, photovoltaic inverter, and smart gateway. Several ventilation openings are provided on the outer wall of the heat dissipation box, and a fan is integrated on the other side of the heat dissipation box.

[0018] Preferably, the front and rear ends of both sides of the heat sink are provided with limiting grooves. A second pressure spring is movably connected inside the limiting groove, and a second moving block is movably connected to one end of the second pressure spring. The second moving block is movably connected inside the limiting groove. A moving rod is installed in the middle of one end of the second moving block, and the outer wall of the moving rod is movably connected to the inner wall of the second pressure spring. A clamping plate is installed at the other end of the moving rod. A clamping pad is installed on one side of the clamping plate, and one side of the clamping pad is movably connected to the surface of the RTU / DTU equipment, the photovoltaic inverter, and the smart gateway. Several support frames are installed on the outer side of one side of the heat sink.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention connects a photovoltaic inverter and a smart gateway via a 485 aviation connector, uses Modbus or MQTT protocols for data exchange, and utilizes innovative data packet multi-address asymmetric mapping technology to enhance data security and collection accuracy. The device includes a blockchain data uploading module, which uses blockchain algorithms provided by Ant Financial to encrypt data and upload it to Ant Financial's blockchain server to ensure data security. At the same time, the data security and immutability module uses blockchain immutability technology to protect photovoltaic asset data, combined with data caching and network disconnection retransmission mechanisms of RTU / DTU equipment, to ensure data integrity and reliability, thereby effectively improving the data management and security protection level of the photovoltaic system.

[0021] 2. This invention equips RTU / DTU devices, photovoltaic inverters, and smart gateways with advanced sealed interface components. These components, through the 485 aviation interface and its built-in rubber sealing gasket, provide robust waterproof and dustproof protection for the 485 aviation plug. The interface component's protective sleeve has a unique design; its tail end not only features an arc-shaped groove and a first pressure spring to drive the first moving block and rotating ring to rotate flexibly, but also connects to a waterproof cover and elastic sealing ring via a rope, forming an additional protective barrier to prevent moisture intrusion. The rope, through the cooperation of a fixing block and a limiting ring, adjusts the diameter of the elastic sealing ring by rotating the rotating ring, facilitating the insertion of the 485 aviation plug. This not only enhances the equipment's environmental adaptability but also significantly improves the reliability of data transmission and the stability of long-term operation.

[0022] 3. This invention features a detachable heat sink with built-in cooling fins that fit snugly against the equipment surface for effective heat conduction and cooling. Ventilation openings on the outer wall of the heat sink, working in conjunction with an integrated fan, accelerate airflow and further enhance heat dissipation efficiency. Limiting grooves are designed on both sides of the heat sink, housing a second pressure spring and a second moving block. A moving rod connects to a clamping plate and clamping pad, ensuring stable clamping of the equipment. This facilitates installation and disassembly while maintaining effective heat dissipation. Furthermore, a support frame is mounted on the outer side of one side of the heat sink, enhancing its stability and thus improving the equipment's thermal management capabilities, ensuring efficient and stable operation of the device. Attached Figure Description

[0023] Figure 1 This is a flowchart illustrating the data acquisition, encryption, and uploading to the blockchain according to the present invention.

[0024] Figure 2 This is a schematic diagram showing the connection between the RTU / DTU device of the present invention and the photovoltaic inverter and smart gateway;

[0025] Figure 3 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the 485 aviation interface of the present invention;

[0027] Figure 5 This is a three-dimensional exploded view of the 485 aviation interface of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the 485 aviation interface structure of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the heat sink of the present invention;

[0030] Figure 8 This is a cross-sectional view of the heat sink structure of the present invention.

[0031] In the diagram: 1. RTU / DTU device; 2. Blockchain data upload module; 4. 485 aviation interface; 5. 485 aviation plug; 6. Photovoltaic inverter; 7. Smart gateway; 8. Rubber sealing gasket; 9. Protective sleeve; 10. Arc groove; 11. First pressure spring; 12. First moving block; 13. Rotating ring; 14. Rope; 15. Waterproof cover; 16. Elastic sealing ring; 17. Fixing block; 18. Restricting ring; 19. Heat sink; 20. Cooling element; 21. Vent; 22. Fan; 23. Restricting groove; 24. Second pressure spring; 25. Second moving block; 26. Moving rod; 27. Clamping plate; 28. Clamping pad; 29. ​​Support frame. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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 this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example 1: Please refer to Figure 1 and Figure 2 The present invention provides an embodiment of a photovoltaic inverter blockchain transformation device based on RTU / DTU equipment, including RTU / DTU equipment 1, blockchain data uploading module 2 and data security and immutability module. RTU / DTU equipment 1 is connected to photovoltaic inverter 6 and smart gateway 7 through 485 aviation plug 5 and uses Modbus or MQTT communication protocol for data interaction.

[0036] RTU / DTU device 1 employs an innovative data packet multi-address asymmetric mapping technology to collect raw data from photovoltaic inverter 6 and smart gateway 7. The principle of the data packet multi-address asymmetric mapping technology is as follows: multiple address information in the data packets sent by photovoltaic inverter 6 and smart gateway 7 are converted through asymmetric mapping rules, so that the data corresponding to each address has uniqueness and unpredictability during the collection process, thereby enhancing data security and collection accuracy.

[0037] Blockchain data upload module 2 is used to encrypt the data collected by RTU / DTU device 1 using the blockchain algorithm provided by Ant Financial and upload it to the Ant Financial blockchain server. The encryption process includes Ant Financial's unique encryption and signature methods. The execution process is as follows: First, the data is hashed to generate a data digest. Then, the data digest is signed using a private key. Finally, the signature, the original data, and the public key are uploaded to the blockchain to ensure data security.

[0038] The data security and immutability module is used to ensure that photovoltaic asset data cannot be maliciously modified or deleted once it is uploaded to the chain through blockchain immutability technology, and combined with the data caching and network disconnection retransmission mechanism of RTU / DTU device 1, it ensures the integrity of the data.

[0039] The device is installed manually without damaging the original hardware structure of the photovoltaic inverter 6 and smart gateway 7. It is suitable for photovoltaic inverter 6 and smart gateway 7 devices with reserved interfaces and does not require modification of the original firmware.

[0040] Furthermore, the photovoltaic inverter 6 and smart gateway 7 are connected via a 485 aviation connector 5, and data is exchanged using Modbus or MQTT protocols. Innovative data packet multi-address asymmetric mapping technology is used to enhance data security and collection accuracy. The device includes a blockchain data uploading module 2, which uses blockchain algorithms provided by Ant Financial to encrypt data and upload it to Ant Financial's blockchain server to ensure data security. At the same time, the data security and immutability module uses blockchain immutability technology to protect photovoltaic asset data. Combined with the data caching and network disconnection retransmission mechanism of RTU / DTU device 1, the integrity and reliability of data are ensured, thereby effectively improving the data management and security protection level of the photovoltaic system.

[0041] The photovoltaic inverter 6 blockchain upgrade device is installed manually without damaging the original hardware structure of the photovoltaic inverter 6 and smart gateway 7. It is compatible with devices with reserved interfaces and does not require any modification to the original firmware. It retains the original performance of the device and realizes secure data collection and blockchain on-chain, which greatly improves the efficiency of data management and security protection, and provides users with a convenient and efficient upgrade path.

[0042] Example 2: Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 In one embodiment of the present invention, the RTU / DTU device 1, the photovoltaic inverter 6, and the smart gateway 7 are all provided with a sealed interface assembly, which is used to seal and protect the 485 aviation plug 5.

[0043] The sealed interface assembly includes a 485 aviation interface 4, and the 485 aviation interface 4 is respectively disposed on the outer wall of the RTU / DTU device 1, the photovoltaic inverter 6 and the smart gateway 7. The inner wall of the 485 aviation interface 4 is covered with a rubber sealing gasket 8, and the other side of the rubber sealing gasket 8 is in close contact with the outer wall of the 485 aviation plug 5.

[0044] A protective sleeve 9 is fixedly connected to the tail end of the outer wall of the 485 aviation interface 4. A set of arc-shaped grooves 10 are opened at the tail end of the outer wall of the protective sleeve 9. A first pressure spring 11 is installed inside the arc-shaped grooves 10. A first moving block 12 is movably connected to the inner wall of the arc-shaped grooves 10, and one end of the first moving block 12 is set at the other end of the first pressure spring 11. A rotating ring 13 is set at the tail end of the outer wall of the protective sleeve 9, and the inner wall of the rotating ring 13 is installed on the outer wall of the first moving block 12. Several ropes 14 are fixedly connected to the tail end of the rotating ring 13.

[0045] A waterproof cover 15 is installed at the tail end of the inner wall of the protective sleeve 9. An elastic sealing ring 16 is installed at one end of the waterproof cover 15. Several fixing blocks 17 are fixedly connected to one side of the elastic sealing ring 16, and the outer wall of the fixing block 17 is fixedly connected to the other end of the rope 14. Several limiting rings 18 are installed at the tail end of the protective sleeve 9, and the inner wall of the limiting ring 18 is movably connected to the outer wall of the rope 14.

[0046] Furthermore, by equipping the RTU / DTU device 1, photovoltaic inverter 6, and smart gateway 7 with advanced sealed interface components, this component provides robust waterproof and dustproof protection for the 485 aviation connector 5 through the 485 aviation interface 4 and its built-in rubber sealing gasket 8. Simultaneously, the protective sleeve 9 of the interface component features a unique design. Its tail end not only has an arc-shaped groove 10 and a first pressure spring 11 to drive the first moving block 12 and rotating ring 13 to rotate flexibly, but also connects to the waterproof cover 15 and elastic sealing ring 16 via a rope 14, forming an additional protective barrier to prevent moisture intrusion. The rope 14, through the cooperation of the fixing block 17 and the limiting ring 18, adjusts the diameter of the elastic sealing ring 16 by rotating the rotating ring 13, facilitating the insertion of the 485 aviation connector 5. This not only enhances the environmental adaptability of the equipment but also significantly improves the reliability of data transmission and the stability of long-term operation.

[0047] Example 3: Please refer to Figure 7 and Figure 8 In one embodiment of the present invention: the outer walls of the RTU / DTU device 1, the photovoltaic inverter 6 and the smart gateway 7 are all movably connected to a detachable heat sink 19. A cooling fin 20 is installed on one side of the heat sink 19, and one side of the cooling fin 20 is in close contact with the surface of the RTU / DTU device 1, the photovoltaic inverter 6 and the smart gateway 7. A plurality of ventilation openings 21 are provided on the outer wall of the heat sink 19, and a fan 22 is integrated on the other side of the heat sink 19.

[0048] Limiting grooves 23 are provided at the front and rear ends of both sides of the heat sink 19. A second pressure spring 24 is movably connected inside the limiting groove 23. A second moving block 25 is movably connected to one end of the second pressure spring 24. The second moving block 25 is movably connected inside the limiting groove 23. A moving rod 26 is installed in the middle of one end of the second moving block 25. The outer wall of the moving rod 26 is movably connected to the inner wall of the second pressure spring 24. A clamping plate 27 is installed at the other end of the moving rod 26. A clamping pad 28 is installed on one side of the clamping plate 27. One side of the clamping pad 28 is movably connected to the surface of the RTU / DTU device 1, the photovoltaic inverter 6, and the smart gateway 7. Several support frames 29 are installed on the outer side of one side of the heat sink 19.

[0049] Furthermore, by equipping a detachable heat sink 19, with built-in cooling fins 20 closely attached to the equipment surface, heat conduction and cooling are effectively carried out. The ventilation openings 21 on the outer wall of the heat sink 19 work in conjunction with the integrated fan 22 to accelerate air circulation and further improve heat dissipation efficiency. The heat sink 19 is designed with limiting grooves 23 on both sides, with built-in second pressure springs 24 and second moving blocks 25. The clamping plate 27 and clamping pads 28 are connected by a moving rod 26 to achieve stable clamping of the equipment, which facilitates installation and disassembly while ensuring heat dissipation effect. In addition, a support frame 29 is installed on the outer side of one side of the heat sink 19 to enhance the stability of the heat sink 19, thereby improving the thermal management capability of the equipment and ensuring efficient and stable operation of the device.

[0050] Working principle: The photovoltaic inverter (6) and smart gateway (7) are connected via a 485 aviation connector (5). Data exchange is conducted using Modbus or MQTT protocols. Innovative data packet multi-address asymmetric mapping technology enhances data security and collection accuracy. The device includes a blockchain data uploading module (2), which uses blockchain algorithms provided by Ant Financial to encrypt data before uploading it to Ant Financial's blockchain server, ensuring data security. Simultaneously, a data security and immutability module utilizes blockchain immutability technology to protect photovoltaic asset data. Combined with data caching and retransmission mechanisms for RTU / DTU devices (1), data integrity and reliability are ensured, thereby effectively improving the photovoltaic system. Regarding data management and security, this photovoltaic inverter 6 blockchain upgrade device is installed manually without damaging the original hardware structure of the photovoltaic inverter 6 and smart gateway 7. It perfectly adapts to devices with a reserved 485 aviation interface 4, requiring no modifications to the original firmware. This preserves the original performance of the devices while achieving secure data collection and blockchain uploading, significantly improving data management and security efficiency. It provides users with a convenient and efficient upgrade path. The RTU / DTU device 1, photovoltaic inverter 6, and smart gateway 7 are all equipped with advanced sealed interface components. These components, through the 485 aviation interface 4 and its built-in rubber sealing gasket 8, provide secure connection for the 485 aviation interface. The plug 5 provides robust waterproof and dustproof protection. Meanwhile, the protective sleeve 9 of the interface assembly features a unique design. Its tail end not only has an arc-shaped groove 10 and a first pressure spring 11 to drive the first moving block 12 and rotating ring 13 to rotate flexibly, but also connects to the waterproof cover 15 and elastic sealing ring 16 via a rope 14, forming an additional protective barrier to prevent moisture intrusion. The rope 14, through the cooperation of the fixing block 17 and the limiting ring 18, adjusts the diameter of the elastic sealing ring 16 by rotating the rotating ring 13, facilitating the insertion of the 485 aviation plug 5. This not only enhances the environmental adaptability of the equipment but also significantly improves the reliability of data transmission and the stability of long-term operation. The device is equipped with a detachable heat sink 19. The heat sink 19 has built-in cooling fins 20 that are in close contact with the surface of the equipment for effective heat conduction and cooling. The ventilation openings 21 on the outer wall of the heat sink 19 work in conjunction with the integrated fan 22 to accelerate air circulation and further improve heat dissipation efficiency. The heat sink 19 has limiting grooves 23 on both sides, with built-in second pressure springs 24 and second moving blocks 25. The clamping plate 27 and clamping pads 28 are connected by a moving rod 26 to achieve stable clamping of the equipment, which facilitates installation and disassembly and ensures heat dissipation effect. In addition, a support frame 29 is installed on the outer side of one side of the heat sink 19 to enhance the stability of the heat sink 19, thereby improving the thermal management capability of the equipment and ensuring efficient and stable operation of the device.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A photovoltaic inverter blockchain retrofit device based on RTU / DTU equipment, comprising an RTU / DTU equipment (1), a blockchain data chaining module (2) and a data security and tamper-proof module, characterized in that: The RTU / DTU device (1) is connected with the photovoltaic inverter (6) and the intelligent gateway (7) through the 485 aviation plug (5), and data interaction is carried out by using a Modbus or MQTT communication protocol; The RTU / DTU device (1) adopts an innovative data packet multi-address asymmetric mapping technology to collect original data from the photovoltaic inverter (6) and the intelligent gateway (7), wherein the principle of the data packet multi-address asymmetric mapping technology is that multiple address information in data packets sent by the photovoltaic inverter (6) and the intelligent gateway (7) is converted through an asymmetric mapping rule, so that the data corresponding to each address has uniqueness and unpredictability in the collection process, thereby enhancing the security of the data and the accuracy of the collection; The blockchain data chaining module (2) is used for uploading data collected by the RTU / DTU device (1) to an Ant Group blockchain server after encryption processing by using a blockchain algorithm provided by the Ant Group, and the encryption processing includes using an encryption and signature method unique to the Ant Group, and the execution process is as follows: first, data is hashed to generate a data digest, then the data digest is signed using a private key, and finally the signature, the original data and the public key are uploaded to the blockchain to ensure the security of the data; The data security and tamper-proofing module is used for ensuring that photovoltaic asset data cannot be maliciously modified or deleted once it is chained by using a blockchain tamper-proofing technology, and ensuring the integrity of the data in combination with the data caching and off-network retransmission mechanism of the RTU / DTU device (1); The RTU / DTU device (1), the photovoltaic inverter (6) and the intelligent gateway (7) are each provided with a sealing interface assembly for sealing and protecting the 485 aviation plug (5); The sealing interface assembly includes a 485 aviation interface (4), and the 485 aviation interface (4) is arranged on the outer wall of the RTU / DTU device (1), the photovoltaic inverter (6) and the intelligent gateway (7), respectively, and a rubber sealing pad (8) is arranged on the inner wall of the 485 aviation interface (4), and the other side of the rubber sealing pad (8) is tightly attached to the outer wall of the 485 aviation plug (5); The tail end of the outer wall of the 485 aviation interface (4) is fixedly connected with a protective sleeve (9), a group of arc-shaped grooves (10) are formed in the tail end of the outer wall of the protective sleeve (9), a first pressure spring (11) is installed in the arc-shaped grooves (10), a first moving block (12) is movably connected to the inner wall of the arc-shaped grooves (10), one end of the first moving block (12) is arranged at the other end of the first pressure spring (11), a rotating ring (13) is arranged at the tail end of the outer wall of the protective sleeve (9), the inner wall of the rotating ring (13) is installed on the outer wall of the first moving block (12), and a plurality of ropes (14) are fixedly connected to the tail end of the rotating ring (13).

2. The RTU / DTU device based photovoltaic inverter retrofit device of claim 1, wherein: The device adopts a manual installation method without damaging the hardware structure of the original photovoltaic inverter (6) and the intelligent gateway (7), and is suitable for photovoltaic inverters (6) and intelligent gateway (7) devices with reserved interfaces without the need to modify the original factory firmware.

3. The RTU / DTU device based photovoltaic inverter retrofit device of claim 1, wherein: The tail end of the inner wall of the protective sleeve (9) is provided with a waterproof cover (15), one end of the waterproof cover (15) is provided with an elastic sealing ring (16), one side of the elastic sealing ring (16) is fixedly connected with a plurality of fixed blocks (17), the outer wall of the fixed block (17) is fixedly connected with the other end of the rope (14), the tail end of the protective sleeve (9) is provided with a limiting ring (18), and the inner wall of the limiting ring (18) is movably connected with the outer wall of the rope (14).

4. The RTU / DTU device based photovoltaic inverter retrofit device of claim 1, wherein: The outer wall of the RTU / DTU device (1), the photovoltaic inverter (6) and the intelligent gateway (7) is movably connected with a detachable heat dissipation box (19), one side of the heat dissipation box (19) is provided with a refrigeration fin (20), one side of the refrigeration fin (20) is closely attached to the surface of the RTU / DTU device (1), the photovoltaic inverter (6) and the intelligent gateway (7), a plurality of ventilation openings (21) are formed in the outer wall of the heat dissipation box (19), and the other side of the heat dissipation box (19) is integrated with a fan (22).

5. The RTU / DTU device based photovoltaic inverter retrofit device of claim 4, wherein: The front end and the tail end of the two sides of the heat dissipation box (19) are provided with limiting grooves (23), the second pressure spring (24) is movably connected in the limiting groove (23), one end of the second pressure spring (24) is movably connected with the second moving block (25), the second moving block (25) is movably connected in the limiting groove (23), the middle of one end of the second moving block (25) is provided with a moving rod (26), the outer wall of the moving rod (26) is movably connected with the inner wall of the second pressure spring (24), the other end of the moving rod (26) is provided with a clamping plate (27), one side of the clamping plate (27) is provided with a clamping soft pad (28), one side of the clamping soft pad (28) is movably connected with the surface of the RTU / DTU device (1), the photovoltaic inverter (6) and the intelligent gateway (7), and a plurality of supporting frames (29) are installed on one side of the heat dissipation box (19).

Images