Signal feedback device and data transmission system of power secondary system

Abstract

The utility model discloses a signal feedback device and a data transmission system of a power secondary system, and belongs to the technical field of power systems. According to the signal feedback device, a first control panel is provided with a data input port, the data input port is used for being connected with a management information region of the power secondary system, and the data input port is used for receiving a first feedback signal output by the management information region; the signal generator is connected with the first control panel, and the signal generator is used for sending an isolation signal corresponding to the first feedback signal; the signal receiver is used for receiving the isolation signal sent by the signal generator; the second control panel is connected with the signal receiver, the second control panel is provided with a data output port, the data output port is used for being connected with a production control large area of the power secondary system, and the data output port is used for outputting a second feedback signal corresponding to the isolation signal to the production control large area. The signal feedback device can improve the reliability of one-way data transmission and ensure the data integrity.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power systems, and particularly relates to a signal feedback device and a data transmission system of a power secondary system. BACKGROUND

[0002] The power secondary system refers to various automation systems, devices and their interconnected electrical circuits for monitoring and controlling the production and operation process of the power system, including control appliances, relay protection and automatic devices, measuring instruments, signal appliances and the like. Through the monitoring, control, protection and communication functions of the power secondary system, comprehensive management of the power system can be realized, the operation efficiency and stability of the power system are improved, and the operation cost is reduced.

[0003] The power secondary system is divided into a production control area and a management information area. In order to strengthen the information security management of the power secondary system, prevent attacks and harm of hackers and malicious codes and the like on the system, and ensure the safe and stable operation of the power system, data is transmitted in one direction between the production control area and the management information area. However, the reliability of one-way data transmission is low, and packet loss may occur, and the data integrity cannot be guaranteed. CONTENT OF THE UTILITY MODEL

[0004] The application aims to at least solve one of the technical problems existing in the prior art. To this end, the application provides a signal feedback device and a data transmission system of a power secondary system, which can improve the reliability of one-way data transmission, retransmit in time even if packet loss occurs, and guarantee data integrity.

[0005] In a first aspect, the application provides a signal feedback device of a power secondary system, comprising:

[0006] A first control board is provided with a data input port, the data input port is used to be connected with a management information area of a power secondary system, and the data input port is used to receive a first feedback signal output by the management information area;

[0007] A signal generator is connected with the first control board, and the signal generator is used to send an isolation signal corresponding to the first feedback signal;

[0008] A signal receiver is used to receive the isolation signal sent by the signal generator;

[0009] A second control board is connected with the signal receiver, and the second control board is provided with a data output port, the data output port is used to be connected with a production control area of the power secondary system, and the data output port is used to output a second feedback signal corresponding to the isolation signal to the production control area.

[0010] According to the signal feedback device of the power secondary system of the present application, feedback of the data transmission status is performed through the first control board, the signal generator, the signal receiver and the second control board. The transmission of the isolation signal between the signal generator and the signal receiver is unidirectional. Under the premise of ensuring unidirectional data transmission between the production control area and the management information area, the reliability of unidirectional data transmission in the power secondary system can be improved. Even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0011] According to one embodiment of the present application, the isolation signal includes a data retransmission flag field, and the data retransmission flag field is used to indicate whether the production control area retransmits data to the management information area.

[0012] According to one embodiment of the present application, the isolation signal is an optical signal or an acoustic wave signal.

[0013] According to one embodiment of the present application, the isolation signal is an infrared light signal, the signal generator is an infrared generator, and the signal receiver is an infrared receiver.

[0014] According to one embodiment of the present application, the first control board and the second control board are provided with a power supply interface, and the power supply interface is used to connect to a power supply that is electrically isolated from the power secondary system.

[0015] According to one embodiment of the present application, it further includes:

[0016] The housing defines a receiving space, and the first control board, the signal generator, the signal receiver and the second control board are located in the receiving space.

[0017] In a second aspect, the present application provides a data transmission system for a power secondary system, comprising:

[0018] The signal feedback device for the power secondary system as described in the first aspect above;

[0019] A data transmission medium is connected between the production control area and the management information area of ​​the power secondary system, and is used to realize data transmission from the production control area to the management information area.

[0020] According to the data transmission system of the power secondary system of the present application, unidirectional data transmission is performed through a data transmission medium, and feedback of the data transmission status is performed through a signal feedback device. The transmission of the isolation signal between the signal generator and the signal receiver in the signal feedback device is unidirectional. Under the premise of ensuring unidirectional data transmission between the production control area and the management information area, the reliability of unidirectional data transmission can be improved. Even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0021] According to one embodiment of the present application, the data transmission medium is a video graphics array transmission cable, which can reduce the cost of one-way data transmission.

[0022] In a third aspect, the present application provides a power secondary system, comprising:

[0023] Production control area and management information area;

[0024] As in the data transmission system of the power secondary system described in the second aspect above, the data transmission system is connected to the production control area and the management information area.

[0025] According to the power secondary system of the present application, unidirectional data transmission is carried out between the production control area and the management information area through a data transmission medium, and the data transmission status is fed back through a signal feedback device. The transmission of the isolation signal between the signal generator and the signal receiver in the signal feedback device is unidirectional. Under the premise of ensuring unidirectional data transmission between the production control area and the management information area, the reliability of unidirectional data transmission can be improved. Even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0026] According to one embodiment of the present application, the production control area includes a data acquisition module, a first processing module, a data forwarding module, and a data encoding module connected in sequence, and the management information area includes a data decoding module, a data receiving module, a data parsing module, and a second processing module connected in sequence;

[0027] The data encoding module and the data decoding module are connected via the data transmission medium of the data transmission system, and the data forwarding module and the data parsing module are connected via the signal feedback device of the data transmission system.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 Schematic diagram of the structure of the signal feedback device of the power secondary system provided in an embodiment of the present application;

[0031] Figure 2 This is one of the structural diagrams of the power secondary system provided in the embodiment of the present application;

[0032] Figure 3Fig. 2 is a structural schematic diagram of a power secondary system according to an embodiment of the present application.

[0033] Reference signs:

[0034] The signal feedback device 100, the first control board 110, the data input port 112, the first power interface 113, the second control board 120, the data output port 122, the second power interface 123, the signal generator 130, the signal receiver 140, the shell 150, the data transmission medium 200,

[0035] The production control area 300, the data acquisition module 310, the first processing module 320, the data forwarding module 330, the data encoding module 340,

[0036] The management information area 400, the data decoding module 410, the data receiving module 420, the data analysis module 430, the second processing module 440. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0038] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. Figure 1-Figure 3 The signal feedback device 100 of the power secondary system, the data transmission system of the power secondary system, and the power secondary system according to the embodiments of the present application are described below.

[0039] As shown in Figure 1 The signal feedback device 100 of the power secondary system according to the embodiments of the present application includes the first control board 110, the signal generator 130, the signal receiver 140, and the second control board 120.

[0040] The first control board 110 is provided with the data input port 112, the data input port 112 is used to be connected with the management information area 400 of the power secondary system, and the data input port 112 is used to receive the first feedback signal output by the management information area 400.

[0041] It can be understood that the power secondary system is divided into the production control area 300 and the management information area 400, the production control area 300 transmits data to the management information area 400, and realizes the one-way data transmission from the production control area 300 to the management information area 400.

[0042] The first feedback signal is output by the management information area 400, and is used to represent the data transmission state of the data transmitted from the production control area 300 to the management information area 400.

[0043] In actual implementation, the management information area 400 receives the data packets output by the production control area 300, parses the received data packets, determines whether the received data packets are complete or the format is correct, generates a corresponding first feedback signal, and outputs it to the first control board 110 through the data input port 112.

[0044] In this embodiment, the signal generator 130 is connected to the first control board 110 . The signal generator 130 is used to send an isolation signal corresponding to the first feedback signal. The signal receiver 140 is used to receive the isolation signal sent by the signal generator 130 .

[0045] The first control board 110 may be a circuit board having a control function.

[0046] In actual implementation, the first control board 110 can output corresponding control instructions to the signal generator 130 based on the first feedback signal input by the data input port 112, control the signal generator 130 to generate an isolation signal corresponding to the first feedback signal, and the signal receiver 140 receives the isolation signal generated by the signal generator 130.

[0047] It should be noted that the transmission of the isolated signal between the signal generator 130 and the signal receiver 140 is unidirectional, that is, the signal generator 130 sends the isolated signal and the signal receiver 140 receives the isolated signal.

[0048] It can be understood that the isolation signal is a signal that can reflect the data transmission status of the production control area 300 transmitting data to the management information area 400.

[0049] The second control board 120 is connected to the signal receiver 140. The second control board 120 is provided with a data output port 122. The data output port 122 is used to connect to the production control area 300 of the power secondary system. The data output port 122 is used to output a second feedback signal corresponding to the isolation signal to the production control area 300.

[0050] The second control board 120 may be a circuit board having a control function.

[0051] In actual implementation, the second control board 120 can generate a corresponding second feedback signal according to the isolation signal received by the signal receiver 140 , and feed the second feedback signal back to the production control area 300 through the data output port 122 .

[0052] In this embodiment, the second feedback signal represents the data transmission status of the production control area 300 transmitting data to the management information area 400. The production control area 300 can determine whether the data packet transmitted to the management information area 400 is complete or the format is correct based on the second feedback signal, and determine whether the data packet needs to be resent.

[0053] It should be noted that the first feedback signal, the isolation signal and the second feedback signal can all represent the data transmission status of the production control area 300 transmitting data to the management information area 400. By performing signal conversion and feeding back the data transmission status through the first control board 110, the signal generator 130, the signal receiver 140 and the second control board 120, the management information area 400 can be prevented from outputting data to the production control area 300, thereby ensuring the unidirectionality of data transmission from the production control area 300 to the management information area 400.

[0054] The transmission of the isolation signal between the signal generator 130 and the signal receiver 140 is unidirectional. The signal feedback device 100 can transmit a signal representing the data transmission status and does not transmit other signals. On the premise of ensuring unidirectional transmission of data between the production control area 300 and the management information area 400, the reliability of data transmission is improved. Even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0055] A specific embodiment is described below.

[0056] In the power secondary system, the production control area 300 transmits data packet A to the management information area 400. The management information area 400 receives data packet A and parses it. The management information area 400 determines whether data packet A is complete and whether the format is the preset format agreed upon between the production control area 300 and the management information area 400.

[0057] When the management information area 400 determines that the data packet A is incomplete, it outputs a first feedback signal N to the first control board 110. The first control board 110 controls the signal generator 130 to send an isolation signal N corresponding to the first feedback signal N. The signal receiver 140 receives the isolation signal N sent by the signal generator 130. The second control board 120 outputs a second feedback signal N corresponding to the isolation signal N to the production control area 300.

[0058] In this embodiment, the signal feedback device 100 feeds back the incomplete data transmission status of the data packet A received by the management information area 400 to the production control area 300. The production control area 300 can promptly resend the data packet A to the management information area 400 to ensure data integrity.

[0059] When the management information area 400 determines that the data packet A is complete, it outputs a first feedback signal Y to the first control board 110. The first control board 110 controls the signal generator 130 to send an isolation signal Y corresponding to the first feedback signal Y. The signal receiver 140 receives the isolation signal Y sent by the signal generator 130. The second control board 120 outputs a second feedback signal Y corresponding to the isolation signal Y to the production control area 300.

[0060] In this embodiment, the signal feedback device 100 feeds back the complete data transmission status of the data packet A received by the management information area 400 to the production control area 300. The production control area 300 can then transmit the next data packet B to the management information area 400, thereby improving the data transmission efficiency between the production control area 300 and the management information area 400.

[0061] It should be noted that the signal feedback device 100 can transmit a signal representing the data transmission status, but not other signals. The signal feedback device 100 is not connected to an external network, thereby ensuring the independence and security of the signal feedback device 100.

[0062] According to the signal feedback device 100 of the power secondary system provided in the embodiment of the present application, feedback of the data transmission status is performed through the first control board 110, the signal generator 130, the signal receiver 140 and the second control board 120. The transmission of the isolation signal between the signal generator 130 and the signal receiver 140 is unidirectional. Under the premise of ensuring unidirectional data transmission between the production control area 300 and the management information area 400, the reliability of unidirectional data transmission in the power secondary system can be improved. Even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0063] In some embodiments, the isolation signal includes a data retransmission flag field, and the data retransmission flag field is used to indicate whether the production control area 300 retransmits data to the management information area 400 .

[0064] In this embodiment, the isolation signal transmitted in the signal feedback device 100 has a fixed data format, and there is a data retransmission identification field in the field of the isolation signal. According to different information in the data retransmission identification field, the production control area 300 is instructed to retransmit data to the management information area 400, or the production control area 300 is instructed not to retransmit data.

[0065] In actual implementation, the data retransmission identification field can be in the form of "true / false", "yes / no", etc. "true" means that the data packet currently received by the management information area 400 is correct and complete, "false" means that the data packet currently received by the management information area 400 may be incomplete or the data is incorrect and needs to be retransmitted; "yes" means that the data needs to be retransmitted, and "no" means that the data does not need to be retransmitted.

[0066] The data retransmission identification field can also be in the form of "data packet sequence number / preset code". When the data retransmission identification field is the data packet sequence number, it means that the data packet received by the management information area 400 may be incomplete or the data is incorrect, and the production control area 300 needs to retransmit it according to the data packet sequence number. When the data retransmission identification field is the preset code, it means that the data packet received by the management information area 400 is correct and complete, and the production control area 300 does not need to retransmit the data.

[0067] It can be understood that the data retransmission identification field is a partial field in the isolation signal. The data retransmission identification field represents the data transmission status between the production control area 300 and the management information area 400, indicating whether the production control area 300 retransmits data to the management information area 400. The isolation signal can also include fields representing other information.

[0068] In actual implementation, the isolation signal may further include a sequence number field representing the data packet and a message header field.

[0069] For example, the first feedback signal is transmitted from the management information area 400 to the data input port 112 of the first control board 110. The first control board 110 processes the first feedback signal, and the control signal generator 130 sends an isolation signal corresponding to the first feedback signal. The fields of the isolation signal include "message header + data packet sequence number + true / false".

[0070] The signal receiver 140 receives the isolated signal and transmits it to the second control board 120. The second control board 120 decodes the isolated signal and obtains a second feedback signal which is fed back to the production control area 300 through the data output port 122. The production control area 300 determines whether to retransmit the data to the management information area 400.

[0071] In actual implementation, signals are transmitted in an agreed format between the management information area 400 and the first control board 110, and between the second control board 120 and the production control area 300. When the first control board 110 receives a signal that does not conform to the agreed format sent from the management information area 400, it abandons the signal. When the production control area 300 receives a signal that does not conform to the agreed format output from the second control board 120, it abandons the signal.

[0072] In some embodiments, the isolation signal is an optical signal or an acoustic signal.

[0073] In this embodiment, the signal transmitted by the first control board 110 and the second control board 120 is an electrical signal, which is converted into an optical signal or an acoustic signal for transmission through the signal generator 130 and the signal receiver 140, thereby realizing isolated signal transmission and ensuring the unidirectionality of data transmission between the production control area 300 and the management information area 400.

[0074] In some embodiments, the isolated signal is an infrared light signal, the signal generator 130 is an infrared generator, and the signal receiver 140 is an infrared receiver.

[0075] In this embodiment, the data transmission status is fed back via an infrared light signal. The infrared generator generates the infrared light signal, and the infrared receiver receives the infrared light signal.

[0076] In some embodiments, the first control board 110 and the second control board 120 are provided with a power interface, and the power interface is used to connect a power source that is electrically isolated from the power secondary system.

[0077] like Figure 1 As shown, the first control board 110 is provided with a first power interface 113, and the second control board 120 is provided with a second power interface 123. The first power interface 113 and the second power interface 123 are connected to a power supply electrically isolated from the power secondary system. The signal feedback device 100 is powered by the power supply electrically isolated from the power secondary system, that is, the signal feedback device 100 and the power secondary system are electrically isolated, thereby ensuring the stability of the operation of the signal feedback device 100.

[0078] In some embodiments, the signal feedback device 100 further includes a housing 150 .

[0079] In this embodiment, the housing 150 defines an accommodation space, and the first control board 110 , the signal generator 130 , the signal receiver 140 , and the second control board 120 are located in the accommodation space.

[0080] like Figure 1 As shown, the signal feedback device 100 is a sealed device having a housing 150, wherein a first control board 110, a signal generator 130, a signal receiver 140 and a second control board 120 are arranged inside the housing 150. The housing 150 can ensure the stability of isolated signal transmission such as optical signals and acoustic signals between the signal generator 130 and the signal receiver 140.

[0081] An embodiment of the present application also provides a data transmission system for a power secondary system.

[0082] The data transmission system of the power secondary system includes: the signal feedback device 100 and the data transmission medium 200 as mentioned above. The data transmission medium 200 is connected between the production control area 300 and the management information area 400 of the power secondary system. The data transmission medium 200 is used to realize data transmission from the production control area 300 to the management information area 400.

[0083] Among them, the data transmission medium 200 is a medium for realizing unidirectional data transmission, supporting data transmission from the production control area 300 to the management information area 400, and the signal feedback device 100 is a device for feedback of data transmission status, which feeds back the data transmission status between the production control area 300 and the management information area 400 to the production control area 300.

[0084] According to the data transmission system of the power secondary system provided in the embodiment of the present application, unidirectional data transmission is performed through the data transmission medium 200, and feedback of the data transmission status is performed through the signal feedback device 100. The transmission of the isolation signal between the signal generator 130 and the signal receiver 140 in the signal feedback device 100 is unidirectional. Under the premise of ensuring unidirectional data transmission between the production control area 300 and the management information area 400, the reliability of unidirectional data transmission can be improved. Even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0085] In some embodiments, the data transmission medium 200 is a video graphics array transmission cable.

[0086] Among them, Video Graphics Array (VGA) is a video transmission standard, and a VGA transmission cable is a cable that realizes data transmission based on the VGA video transmission standard.

[0087] The video graphics array transmission cable can transmit analog signals and has a significant unidirectional characteristic. It can realize unidirectional data transmission from the production control area 300 to the management information area 400, ensuring the stability and reliability of the data transmission process. Compared with the network switch or other unidirectional transmission systems used in the power secondary system in related technologies, it has lower costs.

[0088] An embodiment of the present application also provides a power secondary system.

[0089] like Figure 2 As shown, the power secondary system includes a production control area 300, a management information area 400 and a data transmission system of the power secondary system as described above, and the data transmission system is connected to the production control area 300 and the management information area 400.

[0090] In actual implementation, the production control area 300 can be divided into a control area (safety zone I) and a non-control area (safety zone II), and the management information area 400 can be divided into a production management area (safety zone III) and a management information area (safety zone IV). Different safety zones correspond to different safety protection requirements. Among them, safety zone I has the highest safety level, followed by safety zone II, and so on.

[0091] In this embodiment, the data transmission system can be connected between security zone I and security zone III. The data transmission medium 200 transmits the data from security zone I to security zone III in a unidirectional manner. The signal feedback device 100 feeds back the data transmission status to security zone I, and security zone I determines whether to resend the data.

[0092] According to the power secondary system provided in the embodiment of the present application, unidirectional data transmission is performed between the production control area 300 and the management information area 400 through the data transmission medium 200, and the data transmission status is fed back through the signal feedback device 100. The transmission of the isolation signal between the signal generator 130 and the signal receiver 140 in the signal feedback device 100 is unidirectional. Under the premise of ensuring unidirectional data transmission between the production control area 300 and the management information area 400, the reliability of unidirectional data transmission can be improved, and even if packet loss occurs, it can be retransmitted in time to ensure data integrity.

[0093] In some embodiments, the data transmission medium 200 may be a video graphics array transmission cable, which ensures the stability and reliability of the data transmission process and effectively reduces the data transmission cost.

[0094] In some embodiments, as Figure 3 As shown, the production control area 300 includes a data acquisition module 310, a first processing module 320, a data forwarding module 330 and a data encoding module 340 connected in sequence, and the management information area 400 includes a data decoding module 410, a data receiving module 420, a data parsing module 430 and a second processing module 440 connected in sequence.

[0095] In this embodiment, the data encoding module 340 and the data decoding module 410 are connected via the data transmission medium 200 of the data transmission system, and the data forwarding module 330 and the data parsing module 430 are connected via the signal feedback device 100 of the data transmission system.

[0096] In the production control area 300, the data acquisition module 310 includes various data acquisition devices, which collect digital or analog data from each end. The data acquisition module 310 outputs the collected data to the first processing module 320, and the first processing module 320 performs statistics, verification or other processing on the data.

[0097] The first processing module 320 outputs the processed data to the data forwarding module 330 for data forwarding, and the data encoding module 340 encodes the data, and the data transmission medium 200 transmits the data to the management information area 400.

[0098] In the management information area 400, the data decoding module 410 decodes the data transmitted by the data transmission medium 200, the data receiving module 420 receives the decoded data, the data parsing module 430 parses it to determine whether the current data packet is correct and complete, and the second processing module 440 performs subsequent business processing on the parsed data.

[0099] In this embodiment, the data analysis module 430 performs analysis to determine whether the current data packet is correct and complete, and transmits a first feedback signal reflecting the data transmission status between the production control area 300 and the management information area 400 to the signal feedback device 100.

[0100] The signal feedback device 100 transmits the second feedback signal to the data forwarding module 330 of the production control area 300 through the data output port 122 by isolating the signal transmission, and the data forwarding module 330 determines whether to resend the data.

[0101] In actual implementation, the data encoding module 340 can perform VGA encoding on the data and transmit it through the video graphics array transmission cable. The data decoding module 410 performs VGA decoding to reduce the cost of one-way data transmission between the production control area 300 and the management information area 400.

[0102] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0103] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0104] In the description of this application, “plurality” means two or more.

[0105] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0106] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0107] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0108] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A signal feedback device for a power secondary system, characterized in that: include: a first control board, the first control board being provided with a data input port, the data input port being used to connect to a management information area of ​​the power secondary system, the data input port being used to receive a first feedback signal output by the management information area; a signal generator connected to the first control board, and configured to emit an isolation signal corresponding to the first feedback signal; A signal receiver, configured to receive the isolation signal sent by the signal generator; A second control board, the second control board is connected to the signal receiver, the second control board is provided with a data output port, the data output port is used to connect to the production control area of ​​the power secondary system, and the data output port is used to output a second feedback signal corresponding to the isolation signal to the production control area.

2. The signal feedback device for the power secondary system according to claim 1, characterized in that: The isolation signal includes a data retransmission identification field, and the data retransmission identification field is used to indicate whether the production control area retransmits data to the management information area.

3. The signal feedback device for a power secondary system according to claim 1, characterized in that: The isolated signal is an optical signal or an acoustic signal.

4. The signal feedback device for a power secondary system according to claim 3, characterized in that: The isolation signal is an infrared light signal, the signal generator is an infrared generator, and the signal receiver is an infrared receiver.

5. The signal feedback device for a power secondary system according to any one of claims 1 to 4, characterized in that: The first control board and the second control board are provided with a power supply interface, and the power supply interface is used to connect a power supply electrically isolated from the power secondary system.

6. The signal feedback device for a power secondary system according to any one of claims 1 to 4, characterized in that: Also includes: The housing defines a receiving space, and the first control board, the signal generator, the signal receiver and the second control board are located in the receiving space.

7. A data transmission system for a power secondary system, characterized in that: include: The signal feedback device for a power secondary system according to any one of claims 1 to 6; A data transmission medium is connected between the production control area and the management information area of ​​the power secondary system, and is used to realize data transmission from the production control area to the management information area.

8. The data transmission system of the power secondary system according to claim 7, characterized in that: The data transmission medium is a video graphics array transmission cable.

9. A power secondary system, characterized in that: include: Production control area and management information area; The data transmission system for the power secondary system according to claim 7 or 8, wherein the data transmission system is connected to the production control area and the management information area.

10. The power secondary system according to claim 9, characterized in that: The production control area includes a data acquisition module, a first processing module, a data forwarding module and a data encoding module connected in sequence, and the management information area includes a data decoding module, a data receiving module, a data parsing module and a second processing module connected in sequence; The data encoding module and the data decoding module are connected via the data transmission medium of the data transmission system, and the data forwarding module and the data parsing module are connected via the signal feedback device of the data transmission system.

Images