Wireless operation and maintenance method and system for distribution automation terminal

Abstract

The invention relates to the technical field of power distribution automation, and discloses a power distribution automation terminal wireless operation and maintenance method and system, and the method comprises the steps: building the communication with an automation terminal through wireless connection; a data processing unit is used for data processing and control; wireless receiving and transmitting of data are achieved through the wireless transceiver, reverse processing of the data is achieved through the data processing unit, data generation is controlled, and a virtual communication interface is provided for third-party software to call. According to the method, the problem of traditional wired connection of maintenance and debugging of the automatic terminal can be solved, and non-contact rapid equipment state evaluation is realized. Safety risks of pole / tower operation and machine room operation are reduced, cable disorder and plugging errors are avoided, and maintenance efficiency is improved. And wireless debugging allows simultaneous operation of various devices, so that the labor intensity of maintenance personnel is reduced, and the operation and maintenance efficiency and the reliability of device management are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution automation, and in particular to a method and system for wireless operation and maintenance of power distribution automation terminals. Background Art

[0002] At present, the requirements for power supply reliability are gradually increasing, a large number of line distribution automation terminals have been put into use, the power grid fault location and rapid isolation and power restoration capabilities have been further enhanced, and the level of distribution network automation has been significantly improved, but there are also higher requirements for the operation and maintenance of distribution network automation terminals. The timeliness requirements for the operation and maintenance of distribution network automation terminals are becoming increasingly stringent, and the time limit for handling disconnections and other defects has been further compressed.

[0003] In actual production work, the equipment is not very streamlined. The maintenance terminal needs to use about 5 different types of wiring for debugging. Debugging a device often requires multiple different types of secondary lines. Some distribution points are installed higher than two meters. The secondary wiring falls seriously during the debugging process, which often causes terminal debugging failure due to poor wiring contact and damages the terminal body program. In addition, each time the terminal is debugged, the operator needs to climb up to connect and remove the wires. The operation time on the pole is long and manpower-consuming. In the debugging work, it is sometimes necessary to disassemble and analyze the lines connected to the distribution automation terminal during normal operation. During the on-site restoration process, there is also the possibility that the wiring is loose and affects the safe operation of the terminal. The traditional distribution switch operation and maintenance method has both the risk of operators falling from heights and electric shock, and the risk of damage to power grid equipment.

[0004] In order to further improve the operation and maintenance efficiency of distribution terminals and reduce the workload of personnel, it is urgent to further transform and innovate the existing operation and maintenance methods of distribution terminals. In view of the safety and efficiency problems existing in the current distribution and maintenance process, we promote the integration of modern information and communication technology with traditional operation and inspection technology as the main line, develop wireless operation and maintenance tools for distribution automation terminals, and innovate the operation and maintenance technology of distribution automation terminals, so as to achieve the purpose of greatly improving the operation and maintenance efficiency of distribution terminals and ensuring the safety of operation and maintenance of operators.

[0005] The existing method often requires climbing and working close to high voltage when debugging and maintaining terminals such as pole-mounted FTUs and fault indicators installed on poles / towers. When debugging and maintaining terminals such as line DTUs, area TTUs, and station communication devices, it is necessary to open the cabinet door and work close to high voltage, and use cables to connect the debugged terminals. Frontline technicians often need to carry a variety of debugging cables, and sometimes need to repeatedly replace debugging cables during the debugging process. In particular, when working on poles / towers, it is necessary to repeatedly go up and down the pole tower to replace the debugging cables. Sometimes maintenance work requires the use of multiple debugging cables at the same time. This traditional debugging and maintenance operation method has the following difficulties:

[0006] Risk of falling from height: Sometimes during debugging and maintenance, it is necessary to repeatedly replace debugging cables (such as serial cables, network cables, etc.). When working on poles / towers, it is necessary to repeatedly go up and down the poles to replace the debugging cables, which increases the risk of people falling from height.

[0007] Risk of electric shock: During the debugging process, the cabinet is connected to the debugged terminal through metal cables, and the cabinet door needs to be opened to approach dangerous voltage during the process of plugging, unplugging and replacing the debugging cables. Technicians have a relatively high risk of electric shock.

[0008] Equipment risks: When working in a computer room with dense equipment and cables, the cables used for debugging are complicated and may need to be replaced and plugged in repeatedly, which increases the probability of error and increases the safety risks of the equipment.

[0009] Inefficiency: Sometimes during the debugging and maintenance process, it is necessary to repeatedly go up and down the pole / tower, which increases the operating time of a single device and leads to low operating efficiency. Summary of the invention

[0010] In view of the above existing problems, the present invention is proposed.

[0011] Therefore, the present invention provides a wireless operation and maintenance method for distribution automation terminals, which can solve the traditional wired connection problem of automation terminal maintenance and debugging, and realize contactless rapid equipment status assessment. It reduces the safety risks of pole / tower operations and machine room operations, avoids cable clutter and plugging errors, and improves maintenance efficiency. Wireless debugging allows multiple devices to be operated at the same time, reduces the labor intensity of maintenance personnel, and significantly improves operation and maintenance efficiency and the reliability of equipment management.

[0012] In order to solve the above technical problems, the present invention provides the following technical solutions, a wireless operation and maintenance method for distribution automation terminals, comprising: establishing communication with the automation terminal through a wireless connection; using a data processing unit to perform data processing and control; realizing wireless transmission and reception of data through a wireless transceiver, reversely processing data through a data processing unit, controlling data generation, and providing a virtual communication interface for third-party software to call.

[0013] As a preferred solution of the wireless operation and maintenance method of a distribution automation terminal described in the present invention, wherein: the establishment of communication with the automation terminal includes starting the communication conversion and interface of the automation terminal, and entering the initialization mode, and receiving the communication signal from the automation terminal through a preset initialization signal;

[0014] The data processing and control unit transmits a specific synchronization signal to the automation terminal. After receiving the synchronization signal, the automation terminal feeds back a confirmation signal to ensure that the communication frequency and protocol of both parties are consistent;

[0015] The automation terminal forwards the data to the data processing and control unit and encapsulates the data and sends it in the form of wireless signals.

[0016] As a preferred solution of the wireless operation and maintenance method of a distribution automation terminal described in the present invention, wherein: the data processing and control includes processing input and output communication data and controlling the operation of the wireless transceiver unit;

[0017] Wireless communication technology is used. The wireless communication protocol supports point-to-point connection. It can directly establish connections between devices without external network infrastructure, and instantly receive feedback information from device terminals through real-time data feedback models:

[0018] R f =F sync (D in ,T t )

[0019] Among them, F sync Is a synchronous function responsible for processing input data D in and the corresponding timestamp T t , generate real-time feedback results R f ,The mechanism allows operators to monitor the equipment status in real time and adjust the ,maintenance strategy in a timely manner.

[0020] As a preferred solution of the wireless operation and maintenance method of a distribution automation terminal described in the present invention, the wireless transceiver includes: using adaptive frequency tuning technology to dynamically adjust the receiving frequency to match the transmitting frequency of the automation terminal:

[0021] f t =f base +Δf a (I n ,P)

[0022] Among them, f base is the fundamental frequency, Δf a is the adaptive frequency adjustment function, I n is the noise interference level, P is the signal power;

[0023] The user data is encapsulated into a specific format, including a data header, a data body, and a check code. An improved QAM modulation technique is used to increase the modulation order variable M, and the modulated signal is transmitted through the antenna.

[0024] As a preferred solution of the wireless operation and maintenance method of a distribution automation terminal described in the present invention, the wireless transceiver also includes receiving the data encapsulated by the automation terminal, unpacking and extracting the user data, identifying the data header in the data packet, determining the data packet type and length, splitting the data packet into a data body and a check code according to the data header information, extracting the user data from the data body, using an improved CRC check formula for data verification, and increasing the check polynomial order:

[0025] CRC(x)=x n mod G(x)

[0026] Wherein, CRC(x) is a function of the cyclic redundancy check value, x represents a single bit in the data body, n represents the power of x, and G(x) is the generating polynomial;

[0027] Whether the data needs to be resent is determined based on whether the verification result passes.

[0028] As a preferred solution of the wireless operation and maintenance method of a distribution automation terminal described in the present invention, the reverse processing of data includes restoring the data source code and providing a virtual serial data interface for debugging by third-party software, using a reverse engineering algorithm to convert the original sensor data into a source data format, and introducing a loss function to disassemble the data source;

[0029] The third-party software can access the restored data by reading the virtual serial port. The data processing efficiency of the third-party software is set to E, which is expressed as:

[0030]

[0031] Among them, D size is the amount of data, L is the delay, and C is the fixed computational overhead;

[0032] Install remote monitoring tools, view virtual serial port data in real time, dynamically analyze and adjust the data, establish a feedback mechanism, adjust sensor acquisition parameters by judging data differences, and improve the accuracy of data source restoration.

[0033] As a preferred solution of the wireless operation and maintenance method for a distribution automation terminal described in the present invention, wherein: the provision of a virtual communication interface includes configuring a distribution automation wireless operation and maintenance module, the system performs a data validity check after the user inputs, and ensures that the parameter value is within a reasonable range. After the user passes the verification, the system saves the configuration parameters to the local storage or cloud, and pushes them to the wireless operation and maintenance module. After the configuration is completed, the wireless operation and maintenance module can choose to automatically restart to load the new configuration, provide a test connection function, confirm that the wireless operation and maintenance module can be stably connected to the distribution network, and verify whether the setting is successful;

[0034] The user selects the corresponding operation and maintenance module through the distribution automation management software, and establishes a connection through the configured wireless communication protocol. Identity authentication is performed during the connection process to ensure that only authorized users can access the work log. After receiving the work log, the user software parses the data packet, extracts key information, and provides a visual interface on the user side to display the log information. Users can sort by time, filter specific information, and generate an operation status report.

[0035] Another object of the present invention is to provide a wireless operation and maintenance system for distribution automation terminals, which can ensure the reliability and flexibility of the distribution system during operation through efficient data interaction and control.

[0036] As a preferred solution of the wireless operation and maintenance system for distribution automation terminals described in the present invention, it includes: a communication conversion and interface module, a data controller, a wireless transceiver, a data processing unit, and a distribution automation wireless operation and maintenance module;

[0037] The communication conversion and interface module is responsible for the input and output of various communication data, supports serial data interface and Ethernet data interface, and provides a reliable communication bridge between the wireless operation and maintenance module and other devices;

[0038] The data controller includes a data processing and control unit and a wireless transceiver unit. The data processing and control unit is responsible for processing the data from the communication interface module, performing data parsing, packaging and forwarding, and controlling the work of the wireless transceiver unit to achieve real-time feedback and monitoring of data, analyze the device status and make timely adjustments;

[0039] The wireless transceiver unit realizes the wireless transmission and reception of data, processes the sending and receiving of wireless signals, and dynamically adjusts the operating frequency and communication power according to the user-configured parameters and real-time network conditions;

[0040] The wireless transceiver is specifically responsible for sending and receiving wireless signals and supports adaptive frequency tuning technology to match the frequency transmitted by the automation terminal;

[0041] The data processing unit is responsible for reverse processing and restoring the data source code, and provides a virtual function corresponding to the communication interface, so that the third-party software can call this interface for data interaction and debugging;

[0042] The distribution automation wireless operation and maintenance module coordinates the interaction with the automation terminal as a whole and supports wireless configuration and maintenance operations.

[0043] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, steps of a wireless operation and maintenance method for a distribution automation terminal are implemented.

[0044] A computer-readable storage medium stores a computer program thereon, characterized in that when the computer program is executed by a processor, the steps of a wireless operation and maintenance method for a distribution automation terminal are implemented.

[0045] The beneficial effects of the present invention are as follows: compared with the traditional maintenance and debugging of automation terminals that require the use of wired connections, wireless connections are used instead; at the same time, wireless connections are also implemented for the maintenance configuration of the patented product itself; on-site, wireless connections are used to quickly and easily determine the online status of equipment communication, providing reliable data for operation and maintenance, regular inspections of equipment operating status, and equipment evaluation; wireless maintenance and debugging (no direct contact) reduces the risks of falling and electric shock caused by maintenance operations on poles / towers and operations near dangerous voltages; wireless maintenance and debugging reduces the probability of errors caused by complex cables used for debugging and the need for repeated replacement and plugging when working in a machine room with dense equipment and cables, thereby reducing the potential risks of the equipment itself during maintenance and debugging; wireless maintenance and debugging enables simultaneous debugging of multiple equipment terminals, eliminates the need for complex debugging cables, and maintenance personnel do not need to repeatedly go up and down poles / towers, which improves the operating efficiency of a single maintenance and debugging operation, thereby achieving further overall service efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0047] Figure 1 A schematic flow chart of a method for wireless operation and maintenance of a distribution automation terminal is provided for one embodiment of the present invention.

[0048] Figure 2 A schematic diagram of an overall technical solution of a wireless operation and maintenance method for a distribution automation terminal provided by an embodiment of the present invention.

[0049] Figure 3 A TCP / IP protocol schematic diagram of a distribution automation terminal wireless operation and maintenance method provided by an embodiment of the present invention.

[0050] Figure 4 A driving service program workflow diagram of a distribution automation terminal wireless operation and maintenance method provided by an embodiment of the present invention.

[0051] Figure 5 A schematic diagram of working modules of a wireless operation and maintenance system for distribution automation terminals provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0054] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0055] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0056] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Example 1, reference Figure 1, which is the first embodiment of the present invention, and provides a wireless operation and maintenance method for a distribution automation terminal, comprising:

[0059] S1: Establish communication with the automation terminal via wireless connection.

[0060] Furthermore, the communication conversion and interface of the automation terminal are started, and the initialization mode is entered to receive the communication signal from the automation terminal through the preset initialization signal;

[0061] The data processing and control unit transmits a specific synchronization signal to the automation terminal. After receiving the synchronization signal, the automation terminal feeds back a confirmation signal to ensure that the communication frequency and protocol of both parties are consistent;

[0062] The automation terminal forwards the data to the data processing and control unit and encapsulates the data and sends it in the form of wireless signals.

[0063] S2: Use the data processing unit for data processing and control.

[0064] Furthermore, it processes the input and output communication data and controls the operation of the wireless transceiver unit;

[0065] Wireless communication technology is used. The wireless communication protocol supports point-to-point connection. It can directly establish connections between devices without external network infrastructure, and instantly receive feedback information from device terminals through real-time data feedback models:

[0066] R f =F sybc (D in ,T t )

[0067] Among them, F sync Is a synchronous function responsible for processing input data D in and the corresponding timestamp T t , generate real-time feedback results R f ,The mechanism allows operators to monitor the equipment status in real time and adjust the ,maintenance strategy in a timely manner.

[0068] S3: Wireless data transmission and reception are realized through the wireless transceiver, reverse data processing is performed through the data processing unit, data generation is controlled, and a virtual communication interface is provided for third-party software to call.

[0069] Furthermore, adaptive frequency tuning technology is used to dynamically adjust the receiving frequency to match the transmitting frequency of the automation terminal:

[0070] f t =f base +Δf a (I n,P)

[0071] Among them, f base is the fundamental frequency, Δf a is the adaptive frequency adjustment function, I n is the noise interference level, P is the signal power;

[0072] The user data is encapsulated into a specific format, including a data header, a data body, and a check code. An improved QAM modulation technique is used to increase the modulation order variable M, and the modulated signal is transmitted through the antenna.

[0073] Furthermore, the data encapsulated by the automated terminal is received, and the user data is extracted by unpacking, the data header in the data packet is identified, the data packet type and length are determined, the data packet is split into a data body and a check code according to the data header information, the user data is extracted from the data body, and the improved CRC check formula is used for data verification, and the check polynomial order is increased:

[0074] CRC(x)=x n mod G(x)

[0075] Wherein, CRC(x) is a function of the cyclic redundancy check value, x represents a single bit in the data body, n represents the power of x, and G(x) is the generating polynomial;

[0076] Whether the data needs to be resent is determined based on whether the verification result passes.

[0077] Furthermore, the data source code is restored, and a virtual serial data interface is provided for third-party software to debug. The reverse engineering algorithm is used to convert the original sensor data into the source data format, and the loss function is introduced to disassemble the data source:

[0078]

[0079] Among them, D source is the i-th data point in the source data, D sensor为 The i-th data point in the sensor data, m is the total number of data points, λ is the regularization coefficient, R(D source ) is a measure of the complexity of the source data.

[0080] Output the restored data through a virtual serial port (such as a COM port). Use the API of different operating systems (for example, tty under Linux or CreateFile function under Windows) to create a serial interface; define the data packet structure, including header information, payload, and check bits to improve data transmission stability, expressed as:

[0081] D packet =[S header ,Dsource ,S checksum ]

[0082] Furthermore, the third-party software can access the restored data by reading the virtual serial port. The data processing efficiency of the third-party software is set to E, which is expressed as:

[0083]

[0084] Among them, D size is the amount of data, L is the delay, and C is the fixed computational overhead;

[0085] Install remote monitoring tools, view virtual serial port data in real time, dynamically analyze and adjust the data, establish a feedback mechanism, adjust sensor acquisition parameters by judging data differences, and improve the accuracy of data source restoration.

[0086] It should be noted that when configuring the distribution automation wireless operation and maintenance module, the system performs a data validity check after the user inputs to ensure that the parameter value is within a reasonable range. After the user passes the verification, the system saves the configuration parameters to the local storage or cloud and pushes them to the wireless operation and maintenance module. After the configuration is completed, the wireless operation and maintenance module can choose to automatically restart to load the new configuration, provide a test connection function, confirm that the wireless operation and maintenance module can be stably connected to the distribution network, and verify whether the setting is successful;

[0087] The user selects the corresponding operation and maintenance module through the distribution automation management software, and establishes a connection through the configured wireless communication protocol. Identity authentication is performed during the connection process to ensure that only authorized users can access the work log. After receiving the work log, the user software parses the data packet, extracts key information, and provides a visual interface on the user side to display the log information. Users can sort by time, filter specific information, and generate an operation status report.

[0088] Specific interaction process example

[0089] Step 1: Wireless operation and maintenance module configuration. The user logs in to the distribution automation management system and performs the following operations: Enter the device ID, and the system prompts the device status.

[0090] Enter the wireless signal parameters and data acquisition parameters in the parameter configuration interface.

[0091] The system performs data verification and if valid, it prompts "Configuration successful".

[0092] Step 2: Activation and confirmation. After the configuration takes effect, the user sees the "Test Connection" button. After clicking it, the system displays "Connection test in progress..." and finally displays "Connection successful", indicating that the wireless operation and maintenance module has been activated.

[0093] Step 3: Read the work log. The user selects "Read work log" and the system will send the command:

[0094] "Request status information", the module returns the operating status.

[0095] "Request to get log", the module returns a data packet containing log entries.

[0096] Step 4: Display the log. After the system parses the data packet, it displays the information. The user can choose to download the data or generate a report.

[0097] Example 2, reference Figure 2 - Figure 4 , which is an embodiment of the present invention, provides a wireless operation and maintenance method for distribution automation terminals. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through experiments.

[0098] When the debug communication interface of the 4G communication module and FTU terminal is an Ethernet port, it is connected to the LAN Ethernet port of the WIFI router wireless module; if the debug communication interface of the 4G communication module and FTU terminal is a serial port, it is connected to the Ethernet to serial port function module of the controller MCU; the Ethernet port of the controller MCU is connected to the LAN Ethernet port of the WIFI router wireless module; the Bluetooth wireless module is connected to the WIFI on / off control module; the WIFI on / off control module is connected to the WIFI router wireless module through the control line; the WIFI router wireless module and the Bluetooth wireless module are wirelessly connected to the ground PC or PDA. The Ethernet to serial port module, the Bluetooth wireless module, and the WIFI on / off control module are integrated in the controller MCU.

[0099] Ground PC or PDA part:

[0100] The ground PC or PDA part is connected via Bluetooth wireless and WIFI wireless. Bluetooth wireless (normally open) does not participate in any debugging data communication and is only used for password verification and control of turning on / off WIFI; WIFI wireless (normally closed) is used for debugging data transmission; Bluetooth wireless and WIFI wireless are connected to the driver service program through wireless; the driver service program connects to WIFI wireless after turning on WIFI via Bluetooth wireless, and creates a virtual serial port for third-party debugging software to call serial port communication. If the third-party debugging software supports network connection, it can be directly connected through the WIFI network.

[0101] The overall technical solution for wireless operation and maintenance of distribution automation is as follows:

[0102] 1. Standby state (no debugging required)

[0103] The WIFI router is in wireless off state and Bluetooth is on state. No external device can connect to the 4G communication module and FTU terminal to ensure the safety of the device.

[0104] 2. Working status

[0105] When debugging the 4G communication module or FTU terminal is required, first the ground PC or PDA device searches and connects to Bluetooth through the authorized driver service program, and uses the Bluetooth wireless verification to open the WIFI password. After the password verification is passed, WIFI is turned on (if the password verification fails, the WIFI opening fails). The ground device PC or PDA then connects to WIFI, and the driver service program virtual serial port is called by the third-party debugging software. The third-party debugging software can also be directly connected via WIFI (if supported), and wireless debugging and configuration of the 4G communication module and FTU terminal can begin.

[0106] Note: ①TCP / IP protocol unpacking and packaging, Ethernet to serial port:

[0107] TCP / IP protocol unpacking and encapsulation:

[0108] The TCP / IP protocol family is packaged layer by layer from top to bottom. The top layer is the application layer, the second layer is the transport layer, the third layer is the network layer, and the fourth layer is the data link layer. This layer adds an Ethernet protocol header to the data to be transmitted and performs CRC encoding to prepare for the final data transmission.

[0109] As shown in the figure, the debugging, maintenance and configuration communication data are encapsulated in the "user data" segment and transmitted on the Ethernet. The Ethernet / serial port bidirectional conversion is to unpack and encapsulate the user data in the controller MCU; the data sent from the Ethernet to the serial port is unpacked in the controller MCU to extract the user data and transmitted on the serial port; the data sent from the serial port to the Ethernet is encapsulated into Ethernet frames in the controller MCU and transmitted on the Ethernet and WIFI wireless network.

[0110] Ethernet to serial port addressing:

[0111] The IP address + port number method is used for addressing. The same Ethernet in the controller MCU performs multiple Ethernet / serial port conversions. The IP address is the address of the controller MCU element, and the port number corresponds to different serial ports. That is, the controller MCU receives the Ethernet data frame, unpacks it to extract the user data, and decides to send it to the corresponding serial port based on the target port number. The controller MCU receives the serial port data, and encapsulates the port number as the source port in the Ethernet frame according to the port number corresponding to the serial port where the data is received, and transmits it on the Ethernet and WIFI. The service driver on the ground PC or PDA receives the data from the WIFI wireless network and performs reverse operations to provide it to the third-party debugging software.

[0112] ②Driver service program TCP / IP protocol unpacking and packaging (TCP / IP wireless network virtual serial port)

[0113] a. Responsible for searching and connecting to low-power Bluetooth and generating a verification password using time + random code + private key + public key, sending it to the controller MCU to verify whether the password is correct, and then turning on / off the WIFI wireless network.

[0114] b. Responsible for the Ethernet virtual serial port for third-party debugging software to call the serial port, and read the serial port parameters set by the third-party debugging software when calling the serial port, and encapsulate the serial port parameters and serial port debugging communication data into the "user data" of the IP data message (the encapsulation rules are introduced in the "Dynamic Adaptation of Serial Port Parameters" column above), and send it to the controller MCU via WIFI wirelessly. The controller MCU then unpacks and extracts the user data and sends it to the target debugging device at the corresponding serial port;

[0115] c. Responsible for unpacking the data encapsulated by the debugged device and replying via WIFI wirelessly to extract user data, and send it to the third-party debugging software through the virtual serial port (the unpacking rules are introduced above).

[0116] d. Responsible for debugging and configuring the distribution automation wireless operation and maintenance module and reading the work log.

[0117] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0118] Embodiment 3, the third embodiment of the present invention, is different from the first two embodiments in that:

[0119] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0120] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0121] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0122] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0123] Example 4, reference Figure 5 , which is an embodiment of the present invention, provides a distribution automation terminal wireless operation and maintenance system, characterized in that it includes a communication conversion and interface module 101, a data controller 102, a wireless transceiver 103, a data processing unit 201, and a distribution automation wireless operation and maintenance module 202;

[0124] The communication conversion and interface module 101 is responsible for the input and output of various communication data, supports serial data interface and Ethernet data interface, and provides a reliable communication bridge between the wireless operation and maintenance module and other devices;

[0125] The data controller 102 includes a data processing and control unit 102A and a wireless transceiver unit 102B. The data processing and control unit is responsible for processing data from the communication interface module, parsing, encapsulating and forwarding data, and controlling the work of the wireless transceiver unit to achieve real-time feedback and monitoring of data, analyze the device status and make timely adjustments;

[0126] The wireless transceiver unit 102B implements wireless data transmission and reception, processes the transmission and reception of wireless signals, and dynamically adjusts the operating frequency and communication power according to the user-configured parameters and real-time network conditions;

[0127] The wireless transceiver 103 is specifically responsible for sending and receiving wireless signals and supports adaptive frequency tuning technology to match the frequency transmitted by the automation terminal;

[0128] The data processing unit 201 is responsible for reverse processing and restoring the data source code, and provides a virtual corresponding communication interface function so that the third-party software can call this interface for data interaction and debugging;

[0129] The distribution automation wireless operation and maintenance module 202 coordinates the interaction with the automation terminal as a whole and supports wireless configuration and maintenance operations.

[0130] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wireless operation and maintenance method for distribution automation terminals, characterized in that: include, Establishing communication with automation terminals via wireless connection; Using a data processing unit for data processing and control; Wireless data transmission and reception are achieved through wireless transceivers, data is reversely processed through data processing units, data generation is controlled, and a virtual communication interface is provided for third-party software to call.

2. A distribution automation terminal wireless operation and maintenance method according to claim 1, characterized in that: The establishing of communication with the automation terminal includes starting the communication conversion and interface of the automation terminal and entering the initialization mode, and receiving the communication signal from the automation terminal through the preset initialization signal; The data processing and control unit transmits a specific synchronization signal to the automation terminal. After receiving the synchronization signal, the automation terminal feeds back a confirmation signal to ensure that the communication frequency and protocol of both parties are consistent; The automation terminal forwards the data to the data processing and control unit and encapsulates the data and sends it in the form of wireless signals.

3. A distribution automation terminal wireless operation and maintenance method as claimed in claim 2, characterized in that: The data processing and control includes processing input and output communication data and controlling the operation of the wireless transceiver unit; Wireless communication technology is used. The wireless communication protocol supports point-to-point connection. It can directly establish connections between devices without external network infrastructure, and instantly receive feedback information from device terminals through real-time data feedback models: R f =F sync (D in ,T t ) Among them, F sync Is a synchronous function responsible for processing input data D in and the corresponding timestamp T t , generate real-time feedback results R f ,The mechanism allows operators to monitor the equipment status in real time and adjust the ,maintenance strategy in a timely manner.

4. A distribution automation terminal wireless operation and maintenance method as claimed in claim 3, characterized in that: The wireless transceiver includes, using adaptive frequency tuning technology to dynamically adjust the receiving frequency to match the transmitting frequency of the automation terminal: f t =f base +Δf a (I n ,P) Among them, f base is the fundamental frequency, Δf a is the adaptive frequency adjustment function, I n is the noise interference level, P is the signal power; The user data is encapsulated into a specific format, including a data header, a data body, and a check code. An improved QAM modulation technique is used to increase the modulation order variable M, and the modulated signal is transmitted through the antenna.

5. A distribution automation terminal wireless operation and maintenance method as claimed in claim 4, characterized in that: The wireless transceiver also includes receiving data encapsulated by the automation terminal, unpacking and extracting user data, identifying the data header in the data packet, determining the type and length of the data packet, splitting the data packet into a data body and a check code according to the data header information, extracting user data from the data body, using an improved CRC check formula to perform data check, and increasing the check polynomial order: CRC(x)=x n mod G(x) Wherein, CRC(x) is a function of the cyclic redundancy check value, x represents a single bit in the data body, n represents the power of x, and G(x) is the generating polynomial; Whether the data needs to be resent is determined based on whether the verification result passes.

6. A distribution automation terminal wireless operation and maintenance method as claimed in claim 5, characterized in that: The reverse processing of data includes restoring the data source code and providing a virtual serial data interface for third-party software to debug, using a reverse engineering algorithm to convert the original sensor data into a source data format, and introducing a loss function to disassemble the data source; The third-party software can access the restored data by reading the virtual serial port. The data processing efficiency of the third-party software is set to E, which is expressed as: Among them, D size is the amount of data, L is the delay, and C is the fixed computational overhead; Install remote monitoring tools, view virtual serial port data in real time, dynamically analyze and adjust the data, establish a feedback mechanism, adjust sensor acquisition parameters by judging data differences, and improve the accuracy of data source restoration.

7. A distribution automation terminal wireless operation and maintenance method as claimed in claim 6, characterized in that: The provision of the virtual communication interface includes configuring the distribution automation wireless operation and maintenance module. The system performs a data validity check after the user inputs to ensure that the parameter value is within a reasonable range. After the user passes the verification, the system saves the configuration parameters to the local storage or cloud, and pushes them to the wireless operation and maintenance module. After the configuration is completed, the wireless operation and maintenance module can choose to automatically restart to load the new configuration, provide a test connection function, confirm that the wireless operation and maintenance module can be stably connected to the distribution network, and verify whether the setting is successful; The user selects the corresponding operation and maintenance module through the distribution automation management software, and establishes a connection through the configured wireless communication protocol. Identity authentication is performed during the connection process to ensure that only authorized users can access the work log. After receiving the work log, the user software parses the data packet, extracts key information, and provides a visual interface on the user side to display the log information. Users can sort by time, filter specific information, and generate an operation status report.

8. A system using a distribution automation terminal wireless operation and maintenance method as claimed in any one of claims 1 to 7, characterized in that: It includes communication conversion and interface module, data controller, wireless transceiver, data processing unit, and distribution automation wireless operation and maintenance module; The communication conversion and interface module is responsible for the input and output of various communication data, supports serial data interface and Ethernet data interface, and provides a reliable communication bridge between the wireless operation and maintenance module and other devices; The data controller includes a data processing and control unit and a wireless transceiver unit. The data processing and control unit is responsible for processing the data from the communication interface module, performing data parsing, packaging and forwarding, and controlling the work of the wireless transceiver unit to achieve real-time feedback and monitoring of data, analyze the device status and make timely adjustments; The wireless transceiver unit realizes the wireless transmission and reception of data, processes the sending and receiving of wireless signals, and dynamically adjusts the operating frequency and communication power according to the user-configured parameters and real-time network conditions; The wireless transceiver is specifically responsible for sending and receiving wireless signals and supports adaptive frequency tuning technology to match the frequency transmitted by the automation terminal; The data processing unit is responsible for reverse processing and restoring the data source code, and provides a virtual function corresponding to the communication interface, so that the third-party software can call this interface for data interaction and debugging; The distribution automation wireless operation and maintenance module coordinates the interaction with the automation terminal as a whole and supports wireless configuration and maintenance operations.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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