Data transmission system, method and device applied to digital VBE and medium

Abstract

A data transmission system, method, device and medium applied to digital VBE, the system is connected with a TTM through an optical fiber, is connected with a background monitoring system through a network cable, and is used for real-time transmission and analysis of converter valve monitoring data and issuing of a control command; the system comprises a data transmission module, a data acquisition module and a data processing module which are connected in sequence, the data transmission module receives converter valve monitoring data or issues a control command through an optical fiber; the data acquisition module carries out digital analysis on converter valve monitoring data and stores the data to an RAM or reads a control command and sends the control command to the data transmission module; the data processing module reads and processes converter valve monitoring data by using a DSP (Digital Signal Processor) and generates a control command; the data transmission module improves the data transmission rate; the data acquisition module performs digital analysis on the data, so that higher real-time performance and higher response speed are achieved, and the reliability of the data is improved; and the data processing module improves the data real-time output capability.

Description

Technical Field

[0001] The present application relates to a data transmission system, and particularly to a data transmission system, method, device and medium applied to digital VBE. Background Art

[0002] Valve Base Electronics (VBE) is an important device for realizing the triggering and monitoring of thyristor valves and is an interface device between the converter valve and the control and protection system in a high-voltage DC transmission project. Digital VBE realizes digital monitoring and control methods on the premise of ensuring the original triggering, monitoring and control functions of the converter valve, comprehensively improves the state perception ability and operation reliability of conventional DC converter valves, and effectively supports the intelligent operation of a new power system.

[0003] In order to ensure the stable and reliable operation of the converter valve, the types and amounts of data for on-line monitoring of the converter valve are increasing, and the amount of data exchanged between VBE and TTM is also increasing. The traditional three-pulse and five-pulse technologies are far from meeting such a large amount of data, and new data transmission methods must be adopted. The digital transmission technology based on protocols has emerged. This method can effectively solve problems such as the high-speed transmission and processing of a large amount of data. Digital VBE is superior to traditional VBE in both function and performance and can meet the technical requirements after digital upgrade.

[0004] In the process of high-speed transmission and processing of a large amount of data, low latency of the transmission link and real-time processing of data are key issues. Since the amount of data exchanged between traditional VBE and TTM is small, the requirement for the latency of the communication link is not high. However, when a large amount of data is rapidly transmitted between chips or between a chip and an interface, the transmission rate is restricted to a certain extent, and the number of bits of data parallel processing, the processing method, and the memory capacity also affect the efficiency of data processing.

[0005] The main disadvantages of the existing technology lie in the insufficient low latency of the transmission link and the real-time data processing ability, which are problems that need to be solved urgently at present. Summary of the Invention

[0006] In order to solve the problems of insufficient low latency of the transmission link and real-time data processing ability in the existing technology, the present application proposes a data transmission system applied to digital VBE. The system is connected to TTM through an optical fiber and to a background monitoring system through a network cable, and is used for real-time transmission, parsing of converter valve monitoring data and issuing of control commands. The system includes: a data transmission module, a data acquisition module and a data processing module connected in sequence;

[0007] The data transmission module is used to receive converter valve monitoring data sent by TTM through an optical fiber or issue control commands to TTM;

[0008] The data acquisition module is used to digitally analyze the converter valve monitoring data by using FPGA and store it in the RAM, or read the control command in the RAM and send it to the data transmission module;

[0009] The data processing module is used to read the converter valve monitoring data stored in the RAM by using DSP, process it, and generate a control command to store it in the RAM.

[0010] Preferably, the data transmission module includes: an optoelectronic conversion circuit and a driving circuit connected in sequence;

[0011] The optoelectronic conversion circuit is connected to the TTM one-to-one through an optical fiber and is used to convert an optical signal into an electrical signal;

[0012] The driving circuit is connected to the data acquisition module by using a Schmitt trigger circuit and is used to perform waveform shaping on the electrical signal.

[0013] Preferably, the core device of the data acquisition module is FPGA, including: a CRC check sub-module, a protocol transceiver sub-module, a dual-port RAM sub-module, and an interface sub-module connected in sequence; the protocol transceiver sub-module is connected to the data transmission module and is used to identify and add a flag word;

[0014] The CRC check sub-module is used to perform data integrity check or add a calculated value;

[0015] The dual-port RAM sub-module is provided with two sets of independent data lines, address lines, and control lines and is used for bidirectional communication between FPGA and DSP;

[0016] The interface sub-module is connected to the data processing module.

[0017] Based on the same application concept, the present application also proposes a data transmission method applied to digital VBE, which is implemented based on a data transmission system. The method includes:

[0018] When receiving the converter valve monitoring data sent by the TTM, use the data acquisition module to perform data analysis on the converter valve monitoring data and store it in the RAM;

[0019] Use the data processing module to read the converter valve monitoring data in the RAM, process it, and generate a control command to store it in the RAM;

[0020] When sending a control command to the TTM, use the data processing module to read the control command to be sent in the RAM, analyze it, and send it to the data transmission module;

[0021] Use the data transmission module to perform electro-optical conversion on the control command and then send it to the TTM.

[0022] Preferably, the data acquisition module parses the monitoring data of the converter valve and stores it in the RAM, including:

[0023] The protocol transceiver sub-module is used to identify the flag word of the converter valve monitoring data. If the flag word is correctly identified, it enters the data parsing process; otherwise, the data is discarded.

[0024] The CRC check sub-module calculates a calculated value for the converter valve monitoring data and compares it with the calculated value at the end of the converter valve monitoring data. If they are the same, the data is stored in the RAM; otherwise, the data is discarded.

[0025] The converter valve monitoring data stored in the RAM is transmitted to the data processing module, and an interrupt signal is sent to the DSP through the FPGA.

[0026] Preferably, the data processing module reads the monitoring data of the converter valve in the RAM, processes it, and generates a control command to be stored in the RAM, including:

[0027] The DSP is used to perform interrupt processing on the converter valve monitoring data and perform polling operations at regular intervals to perform secondary verification on the converter valve monitoring data.

[0028] Based on the converter valve monitoring data after secondary verification, a control command is generated and stored in the RAM.

[0029] Preferably, the data processing module reads the control command to be sent in the RAM, parses it, and sends it to the data transmission module, including:

[0030] The protocol transceiver sub-module reads the control command to be sent in the RAM and adds flag words to the head and tail of the control command.

[0031] The CRC check sub-module adds the calculated calculated value to the end of the control command and then sends it to the data transmission module.

[0032] Preferably, the data transmission module performs electro-optical conversion on the control command and then sends it to the TTM, including:

[0033] The drive circuit is used to shape the waveform of the control command.

[0034] The electro-optical conversion circuit performs electro-optical conversion on the control command and then sends it to the TTM through an optical fiber.

[0035] On the other hand, the present application also proposes an electronic device, including: at least one processor and a memory; the memory and the processor are connected by a bus;

[0036] The memory is used to store one or more programs;

[0037] When the one or more programs are executed by the at least one processor, a data transmission method applied to digital VBE as described above is implemented.

[0038] On the other hand, the present application also proposes a readable storage medium with an execution program stored thereon. When the execution program is executed, a data transmission method applied to digital VBE as described above is implemented.

[0039] Compared with the prior art, the beneficial effects of the present application are as follows:

[0040] A data transmission system, method, device and medium applied to digital VBE. The system is connected to the TTM through an optical fiber and to the background monitoring system through a network cable, and is used for real-time transmission, parsing and control command issuance of converter valve monitoring data; the system includes: a data transmission module, a data acquisition module and a data processing module connected in sequence; the data transmission module is used to receive converter valve monitoring data sent by the TTM through the optical fiber or issue control commands to the TTM; the data acquisition module is used to digitally parse the converter valve monitoring data using an FPGA and store it in the RAM or read the control commands in the RAM and send them to the data transmission module; the data processing module is used to read the converter valve monitoring data stored in the RAM using a DSP for processing and generate control commands to be stored in the RAM; the data transmission module of the present application improves the data transmission rate with the TTM; the data acquisition module has higher real-time performance and faster response speed for digital parsing of data, improving the reliability of the data; the data processing module improves the real-time output capacity of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural diagram of a data transmission system applied to digital VBE of the present application;

[0042] Figure 2 It is a structural diagram of the data transmission module of the present application;

[0043] Figure 3 It is a structural diagram of the data acquisition module of the present application;

[0044] Figure 4 It is a structural diagram of the data processing module of the present application;

[0045] Figure 5 It is a flowchart of a data transmission method applied to digital VBE of the present application;

[0046] Figure 6 It is a diagram of an electronic device of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] The purpose of this application is to solve the real-time data transmission and processing technology between traditional VBE and TTM, and provides a data transmission system, method, device and medium applied to digital VBE. By adopting a wider parallel processing bit width, a more reliable transmission method, a lower-latency communication link, and a faster data processing method, it ensures that the technical indicators required for digital transmission are met. Different from traditional VBE, it comprehensively improves the real-time data processing ability and transmission rate, can simultaneously process a large amount of multi-channel and multi-state data, and solves the problems that the existing VBE cannot meet the functions and performances required by the digital communication mechanism. To better understand this application, the content of this application will be further described below in conjunction with the specification drawings and embodiments.

[0048] Embodiment 1:

[0049] A data transmission system applied to digital VBE, as Figure 1 shown, the system is connected to TTM through optical fiber and connected to the background monitoring system through network cable, and is used for real-time transmission, parsing and control command issuance of converter valve monitoring data; the system includes: a data transmission module, a data acquisition module and a data processing module connected in sequence;

[0050] The data transmission module is used to receive converter valve monitoring data sent by TTM through optical fiber or issue control commands to TTM;

[0051] The data acquisition module is used to digitally parse the converter valve monitoring data by using FPGA and store it in RAM or read the control command in RAM and send it to the data transmission module;

[0052] The data processing module is used to read the converter valve monitoring data stored in RAM by using DSP for processing and generate a control command to be stored in RAM.

[0053] The data transmission module includes: an optoelectronic conversion circuit and a drive circuit connected in sequence;

[0054] The optoelectronic conversion circuit is connected to TTM one-to-one through optical fiber and is used to convert optical signals into electrical signals;

[0055] The drive circuit is connected to the data acquisition module by using a Schmidt trigger circuit and is used to perform waveform shaping on the electrical signal.

[0056] The data transmission module is the interface for data interaction between the VBE system and TTM, and receives multi-channel parallel data from TTM through optical fiber; it adopts a high-speed parallel optical communication system, with high bandwidth and data throughput. This module includes an optoelectronic conversion circuit and a drive circuit as Figure 2As shown, it provides up to 18 channels of real-time data for the system, with a delay of ns level. The optoelectronic conversion circuit is connected to the TTM through an optical fiber, and the drive circuit is connected to the FGPA high-speed acquisition module, which is the first stage of the entire communication link.

[0057] The core device of the data acquisition module is the FPGA, including: a CRC check sub-module, a protocol transceiver sub-module, a dual-port RAM sub-module, and an interface sub-module connected in sequence; the protocol transceiver sub-module is connected to the data transmission module for identifying and adding flag words.

[0058] The CRC check sub-module is used to perform data integrity check or add calculated values.

[0059] The dual-port RAM sub-module is provided with two sets of independent data lines, address lines, and control lines for two-way communication between the FPGA and the DSP.

[0060] The interface sub-module is connected to the data processing module.

[0061] The data acquisition module is the core part of the digital VBE, mainly completing the digital parsing of the converter valve monitoring data, which is implemented through the FPGA, as Figure 3 shown. It collects and transmits multiple channels of data in real-time and completes serial-to-parallel conversion, and then transfers the data to the internal RAM of the FPGA; the core device of the data acquisition module uses the cyclone series chips of Altera Corporation, with a maximum clock frequency supporting 472Mhz, and an internal dynamic RAM is designed to enable high-speed continuous acquisition and storage of multiple channels of serial data, which is the intermediate stage of the entire communication link.

[0062] The protocol transceiver sub-module completes the functions of flag word identification and generation, serial-to-parallel conversion of data, data sending and receiving.

[0063] The dual-port RAM sub-module serves as the data buffer between the data acquisition module and the data processing module, ensuring that the core chips FPGA and DSP of the two modules can communicate freely in both directions. Since the dual-port RAM has two sets of completely independent data lines, address lines, and control lines, it allows two independent systems to access it randomly at the same time. Therefore, the read and write operations of the FPGA and the DSP are separated through the dual-port RAM, making their communication method more flexible. By setting the timing parameters, the high-speed communication requirements of the digital VBE can be met, ensuring stable and reliable data transmission between the data acquisition module and the processing module.

[0064] The interface sub-module is the hardware connection part between the data acquisition module and the processing module. In order to meet the characteristics of real-time and high-speed data processing, the system uses a 16-bit bus parallel communication method.

[0065] The data processing module mainly processes the parsed data to complete the functions of algorithms and control, such as Figure 4 shown. The core processor of this module uses a DSP chip. The DSP reads the data in the mapped space through the peripheral interrupt method, and can detect and process the data collected by the FPGA in real time.

[0066] To improve the parallel processing ability, the information interaction with the FPGA adopts a 16-bit parallel bus method. In terms of the application program, the peripheral interrupt and polling methods are adopted. The peripheral interrupt ensures the real-time nature of data processing, and the polling method completes the data reliability verification. This module is at the third level of the communication link.

[0067] The digital VBE adds the functions of monitoring thyristor voltage, damping parameters, equalizing circuit parameters, etc. on the basis of the original monitoring types, and the data types and data volumes that can be processed have been significantly improved.

[0068] The information communication between the VBE and the TTM is based on protocol transmission, and the CRC check is used to ensure the communication reliability. The communication error rate is lower than 10 -11 , and the number of lost pulses is significantly reduced.

[0069] The FPGA internally integrates a multi-channel parallel data processing module and a large-capacity RAM, with higher real-time performance, faster response speed, and trigger synchronization less than 500 ns.

[0070] The entire communication link has extremely low latency. The communication cycle of the transmission module from the TTM to the VBE is no more than 100 us, and the data processing latency from the transmission module to the processing module is no more than 300 us.

[0071] FPGA is Field Programmable Gate Array; DSP is Digital Signal Processor; RAM is Random Access Memory; TTM is Thyristor Monitoring Unit; CRC is Cyclic Redundancy Check.

[0072] Embodiment 2:

[0073] A data transmission method applied to digital VBE is implemented based on a data transmission system. The method flow is as Figure 5 shown, and includes:

[0074] Step 1, when receiving the converter valve monitoring data sent by the TTM, use the data acquisition module to parse and store the converter valve monitoring data in the RAM;

[0075] Step 2, use the data processing module to read the converter valve monitoring data in the RAM for processing and generate a control command to store in the RAM;

[0076] Step 3, when sending a control command to the TTM, the data processing module reads the control command to be sent in the RAM, parses it, and sends it to the data transmission module;

[0077] Step 4, the data transmission module performs electro-optical conversion on the control command and then sends it to the TTM.

[0078] In step 1, when receiving the converter valve monitoring data sent by the TTM, the data acquisition module parses the converter valve monitoring data and stores it in the RAM. Specifically, it includes:

[0079] The data transmission module performs opto-electronic conversion and waveform shaping on the converter valve monitoring data.

[0080] After the protocol receiver of the protocol transceiver sub-module receives the data, it first judges the flag word. If it is correct, the data is stored from the receive shift register into the receive RAM.

[0081] When receiving data, the CRC check sub-module checks the calculated value. If it is correct, it indicates that the received data is consistent with the sent data. If it is incorrect, it means that the data of the receiver and the sender is inconsistent. Finally, the data is discarded, and then it is ready to receive the next data.

[0082] In step 2, the data processing module reads the converter valve monitoring data in the RAM, processes it, and generates a control command to be stored in the RAM. Specifically, it includes:

[0083] When the RAM of the data acquisition module receives data, the FPGA actively sends an interrupt signal to the DSP. The DSP processor then performs interrupt processing. In this way, the real-time nature of data sorting is ensured. After the DSP finishes processing the interrupt process, it will perform a polling operation regularly to verify the reliability of the data, and finally transmit the error-free data to the next level.

[0084] In step 3, when sending a control command to the TTM, the data processing module reads the control command to be sent in the RAM, parses it, and sends it to the data transmission module. Specifically, it includes:

[0085] The CRC check sub-module ensures the reliability of data transmission by increasing the redundancy of the data. When writing data into the RAM, the CRC module adds the calculated value to the end of the data and puts it into the send RAM together to wait for sending.

[0086] When sending data, the protocol transmitter of the protocol transceiver sub-module reads the data to be sent in the RAM, adds flag words at the head and tail of the data, and then puts the parallel data into the output shift register for serial output;

[0087] In step 4, after electro-optic conversion of the control command by the data transmission module, it is sent to the TTM, which specifically includes:

[0088] Use the drive circuit to perform waveform shaping on the control command;

[0089] Use the optoelectronic conversion circuit to perform electro-optic conversion on the control command and send it to the TTM through an optical fiber.

[0090] Embodiment 3:

[0091] As Figure 6 shown, the present invention also provides an electronic device, which may be a computer device, a single-chip microcomputer device, a smart mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, the processor, and the transceiver component are connected by a bus; the memory can be used to store an execution program, and an exemplary execution program may include instructions; the processor is used to execute the instructions stored in the memory. The memory can also be used to store data, and this data can be called and / or modified when the instructions are executed.

[0092] The processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the storage medium to implement the corresponding method flow or corresponding function, so as to implement the steps of a data transmission method applied to digital VBE in the above embodiment.

[0093] Embodiment 4

[0094] Based on the same inventive concept, the present invention also provides a readable storage medium, specifically an electronic device-readable storage medium (Memory). The electronic device-readable storage medium is a memory device in the electronic device and is used to store programs and data. It can be understood that the storage medium here can include both the built-in storage medium in the electronic device and, of course, the extended storage medium supported by the electronic device. The storage medium provides a storage space, and this storage space stores the operating system of the terminal. And, in this storage space, there is also stored one or more instructions suitable for being loaded and executed by the processor. These instructions can be one or more execution programs (including program code). It should be noted that the storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. By the processor loading and executing one or more instructions stored in the storage medium, the steps of a data transmission method applied to digital VBE in the above embodiments can be implemented.

[0095] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code.

[0096] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0097] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0098] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, and thus the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one process or a plurality of processes and / or blocks Figure 1 one process or a plurality of processes and / or blocks Figure 1 or steps for implementing the functions specified in a plurality of blocks.

[0099] The above are only embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application are included within the scope of the claims of the present application pending approval.

Claims

1. A data transmission system applied to a digital VBE (valve base electronic device), characterized in that The system is connected to the TTM (Thyristor Monitoring Unit) via an optical fiber and to the background monitoring system via a network cable, and is used for real-time transmission, parsing, and issuing of control commands for converter valve monitoring data; the system includes: a data transmission module, a data acquisition module, and a data processing module that are connected in sequence; The data transmission module is used to receive the converter valve monitoring data sent by the TTM via an optical fiber or issue a control command to the TTM; The data acquisition module is used to digitally parse the converter valve monitoring data using an FPGA (Field Programmable Gate Array) and store it in a RAM (Random Access Memory), or read the control command in the RAM and send it to the data transmission module; The data processing module is used to read the converter valve monitoring data stored in the RAM using a DSP (Digital Signal Processor) for processing and generate a control command to be stored in the RAM.

2. The system according to claim 1, wherein The data transmission module includes: an optoelectronic conversion circuit and a drive circuit that are connected in sequence; The optoelectronic conversion circuit is connected to the TTM one-to-one via an optical fiber and is used to convert an optical signal into an electrical signal; The drive circuit is connected to the data acquisition module using a Schmidt trigger circuit and is used to shape the waveform of the electrical signal.

3. The system according to claim 1, wherein The core device of the data acquisition module is an FPGA, and includes: a CRC (Cyclic Redundancy Check) check sub-module, a protocol transceiver sub-module, a dual-port RAM sub-module, and an interface sub-module that are connected in sequence; The protocol transceiver sub-module is connected to the data transmission module and is used to identify and add a flag word; The CRC check sub-module is used to perform data integrity check or add a calculated value; The dual-port RAM sub-module is provided with two sets of independent data lines, address lines, and control lines and is used for two-way communication between the FPGA and the DSP; The interface sub-module is connected to the data processing module.

4. A data transmission method applied to digital VBE, characterized in that, Based on the implementation of the data transmission system, the method includes: When receiving the converter valve monitoring data sent by the TTM, use the data acquisition module to parse the converter valve monitoring data and store it in the RAM; Use the data processing module to read the converter valve monitoring data in the RAM for processing and generate a control command to be stored in the RAM; When sending a control command to the TTM, use the data processing module to read the control command to be sent in the RAM for parsing and send it to the data transmission module; Use the data transmission module to perform electro-optical conversion on the control command and send it to the TTM.

5. The method according to claim 4, characterized in that, The use of the data acquisition module to parse the converter valve monitoring data and store it in the RAM includes: Use the protocol transceiver sub-module to identify the flag word of the converter valve monitoring data. If the flag word is correctly identified, enter the data parsing process; otherwise, discard the data; Use the CRC check sub-module to calculate a calculated value for the converter valve monitoring data and compare it with the calculated value at the end of the converter valve monitoring data. If they are consistent, store the data in the RAM; otherwise, discard the data; Transmit the converter valve monitoring data stored in the RAM to the data processing module and send an interrupt signal to the DSP through the FPGA.

6. The method according to claim 4, wherein The data processing module reads the converter valve monitoring data in the RAM, processes it, and generates control commands to be stored in the RAM, including: The DSP interrupts the converter valve monitoring data and polls it at regular intervals for secondary verification. Based on the converter valve monitoring data after secondary verification, control commands are generated and stored in the RAM.

7. The method according to claim 4, characterized in that, The data processing module reads the control commands to be sent in the RAM, parses them, and sends them to the data transmission module, including: The protocol transceiver sub-module reads the control commands to be sent in the RAM and adds flag words to the head and tail of the control commands. The CRC verification sub-module adds the calculated value to the end of the control commands and then sends them to the data transmission module.

8. The method according to claim 4, characterized in that The data transmission module electro-optically converts the control commands and sends them to the TTM, including: The driving circuit shapes the waveforms of the control commands. The electro-optical conversion circuit electro-optically converts the control commands and sends them to the TTM through optical fibers.

9. An electronic device, characterized in that, Including: At least one processor and a memory; The memory and the processor are connected by a bus; The memory is used to store one or more programs; When the one or more programs are executed by the at least one processor, a data transmission method for a digital VBE as described in any one of claims 4 to 8 is implemented.

10. A readable storage medium, characterized in that, There is an execution program stored thereon, and when the execution program is executed, a data transmission method for a digital VBE as described in any one of claims 4 to 8 is implemented.

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