CN111654401B - Network segment switching method, device, terminal and storage medium of monitoring system - Google Patents

Abstract

This application provides a monitoring system network segment switching method, device, terminal and storage medium; the monitoring system communicates through the first network segment and the second network segment, and the first network segment and the second network segment work alternately; if the first network segment is detected If the communication of the first network segment or the second network segment is abnormal, the data request will be resent after switching from the network segment with abnormal communication to the network segment with normal communication, and the first network segment and the second network segment will alternate from the two network segments Change the work to only one of the network segments; carry out network fault diagnosis on the network segment where the communication is abnormal; if the diagnosis result is abnormal, continue to work with only one network segment; The network segment and the second network segment resume alternate work. The invention does not need to wait, directly switches to the normal communication network segment to resend the request, and realizes the purpose of fast switching; it also analyzes and predicts the past fault record information, adjusts the time ratio, and avoids the faulty network segment in advance through prediction, by This greatly improves the communication quality.

Description

Network segment switching method, device, terminal and storage medium of monitoring system

technical field

The present application relates to the technical field of network segment switching, in particular to a network segment switching method, device, terminal and storage medium of a monitoring system.

Background technique

The existing monitoring system realizes dual-network switching mainly depends on judging the communication status of the current network segment. Once the communication status of the current network segment is interrupted or multiple (including retry) pings of an IP in the LAN fail to ping, the network segment switching will be performed automatically. After switching to the standby network segment, resend the data request. Although the existing technology can realize network segment switching, the waiting time for network segment switching is too long, resulting in communication interruption for a certain period of time, which affects the uploading of key data or the issuance of key operation instructions.

Therefore, there is an urgent need in the art for a technical solution capable of realizing fast network segment switching.

Contents of the invention

In view of the shortcomings of the prior art described above, the purpose of this application is to provide a network segment switching method, device, terminal and storage medium for the monitoring system to solve the problem of very long time required for network segment switching in the prior art.

In order to achieve the above purpose and other related purposes, the first aspect of the present application provides a network segment switching method of a monitoring system, the monitoring system communicates through a first network segment and a second network segment, and the first network segment Work alternately with the second network segment; the network segment switching method includes: detecting whether the communication between the first network segment and the second network segment is abnormal; if it is detected that the communication between the first network segment or the second network segment is abnormal , then resend the data request after switching from the network segment with abnormal communication to the network segment with normal communication, and make the first network segment and the second network segment work alternately from the two network segments to only one of the network segments ; Carry out network fault diagnosis on the network segment with abnormal communication; if the diagnosis result is abnormal, then continue to maintain only one network segment to work; if the diagnosis result is normal, then make the first network segment and the second network segment recover Work alternately.

In some embodiments of the first aspect of the present application, the detecting whether the communication between the first network segment and the second network segment is abnormal includes detecting whether the communication between the first network segment and the second network segment occurs Network delay or communication interruption.

In some embodiments of the first aspect of the present application, the method further includes: recording and storing the abnormal communication information of the first network segment and the second network segment; wherein, the abnormal communication information includes at least Timestamp information, frequency information, fault diagnosis time-consuming information, and communication restoration time-consuming information.

In some embodiments of the first aspect of the present application, the method further includes: analyzing the communication stability of the first network segment and the second network segment according to the abnormal communication information; The communication stability of the second network segment is to adjust the time ratio of the first network segment and the second network segment to work alternately.

In some embodiments of the first aspect of the present application, the method further includes: pre-judging the communication abnormalities of the first network segment and the second network segment according to the abnormal communication information; Switching and network troubleshooting.

In some embodiments of the first aspect of the present application, the monitoring system includes a third network segment; the method further includes: if it is detected that the communication between the first network segment and the second network segment is abnormal, then from the current The network segment is switched to a third network segment; otherwise, the third network segment is kept in an idle state.

In order to achieve the above purpose and other related purposes, the second aspect of the present application provides a network segment switching device of the monitoring system, including: a communication detection module, which is used to detect whether the communication between the first network segment and the second network segment occurs Abnormal; the network segment switching module is used to switch from the network segment with abnormal communication to the network segment with normal communication when detecting that the communication of the first network segment or the second network segment is abnormal, and resend the data request; the fault diagnosis module, It is used to diagnose network faults on the network segment with abnormal communication; the mode setting module is used to make the first network segment or the second network segment communicate abnormally when the communication detection module detects segment and the second network segment are changed from two network segments to work alternately by only one of the network segments; and if the diagnosis result of the network segment with abnormal communication is normal, the first network segment and the second network segment are made to resume alternate work.

In some embodiments of the second aspect of the present application, the device further includes: a record storage module, configured to record and store the abnormal communication information of the first network segment and the second network segment; wherein, the abnormal communication The information at least includes time stamp information, frequency information, fault diagnosis time-consuming information, and communication recovery time-consuming information of abnormal occurrence; the information analysis module is used to analyze the first network segment and the second network segment according to the abnormal communication information. Communication stability; it is also used to predict the failure of the communication abnormality of the first network segment and the second network segment according to the abnormal communication information; the adjustment module is used for communication according to the first network segment and the second network segment Stability, adjusting the time ratio of the first network segment and the second network segment to work alternately; the pre-judgment module is used to perform fault prediction on the communication abnormality of the first network segment and the second network segment according to the abnormal communication information Judgment, and perform frequency band switching and network fault diagnosis in advance according to the prediction result.

To achieve the above object and other related objects, a third aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the network segment switching method is implemented.

To achieve the above object and other related objects, the fourth aspect of the present application provides an electronic terminal, including: a processor and a memory; the memory is used to store computer programs, and the processor is used to execute the computer programs stored in the memory , so that the terminal executes the network segment switching method.

As mentioned above, the network segment switching method, device, terminal and storage medium of the monitoring system of the present application have the following beneficial effects: the present invention has greatly improved the existing technology, and the improved technical solution can directly switch without waiting. Resend the request to the network segment of normal communication to achieve the purpose of fast switching. In addition, the present invention analyzes and predicts past fault record information, assigns less time-consuming ratios to network segments where communication faults often occur, and avoids network segments that are prone to faults during certain specific periods of time through pre-judgment , thereby greatly improving the communication quality.

Description of drawings

FIG. 1 is a schematic flowchart of a network segment switching method of a monitoring system in an embodiment of the present application.

FIG. 2 is a schematic diagram of a network segment switching scenario of a monitoring system in an embodiment of the present application.

FIG. 3 is a schematic flowchart of a network segment switching method of a monitoring system in an embodiment of the present application.

FIG. 4 is a schematic flowchart of a network segment switching method of a monitoring system in an embodiment of the present application.

FIG. 5 is a schematic flowchart of a network segment switching method of a monitoring system in an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a network segment switching device of a monitoring system in an embodiment of the present application.

FIG. 7 is a schematic structural diagram of an electronic terminal in an embodiment of the present application.

Detailed ways

Embodiments of the present application are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

It should be noted that in the following description, reference is made to the accompanying drawings, which describe several embodiments of the present application. It is to be understood that other embodiments may be utilized, and mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for describing particular embodiments only and is not intended to limit the application. Spatially relative terms such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text for ease of explanation The relationship of one element or feature to another element or feature shown in the figures.

In this application, terms such as "installation", "connection", "connection", "fixation" and "holding" should be interpreted in a broad sense, for example, it may be a fixed connection or It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising", "comprising" indicate the presence of stated features, operations, elements, components, items, categories, and/or groups, but do not exclude one or more other features, operations, elements, components, Existence, occurrence, or addition of items, categories, and/or groups. The terms "or" and "and/or" as used herein are to be construed as inclusive, or to mean either one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . Exceptions to this definition will only occur when combinations of elements, functions or operations are inherently mutually exclusive in some way.

SCADA (Supervisory Control And Data Acquisition) monitoring system is a data acquisition and monitoring control system. It is a computer-based generation process control and scheduling automation system, which can monitor and control the operating equipment on site. In the application of the power system, the SCADA system, as the most important subsystem of the energy management system (EMS system), has the advantages of complete information, improved efficiency, correct control of system operating status, and quick diagnosis of system fault status. An indispensable tool for power dispatch.

However, the existing SCADA monitoring system to achieve dual network switching mainly depends on judging the communication status of the current network segment. segment switching. After switching to the standby network segment, resend the data request. Such a network segment switching method needs to wait for too long, causing communication interruption for a certain period of time, affecting the upload of key data or the issuance of key operation instructions.

In view of this, the present invention proposes the network segment switching method, device, terminal and storage medium of the monitoring system, which greatly improves the existing technology. The improved technical solution does not need to wait, and directly switches to the normal communication network segment resend request , to achieve the purpose of fast switching. In addition, the present invention analyzes and predicts past fault record information, assigns less time-consuming ratios to network segments where communication faults often occur, and avoids network segments that are prone to faults during certain specific periods of time through pre-judgment , thereby greatly improving the communication quality.

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be further described in detail through the following embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the invention.

Embodiment one:

As shown in FIG. 1 , it shows a schematic flowchart of a network segment switching method of a monitoring system in an embodiment of the present invention. It should be noted that the network segment switching method of this embodiment can be applied to multiple types of hardware devices; the hardware devices can be controllers, such as ARM (Advanced RISC Machines) controllers, FPGA (Field Programmable GateArray) controllers , SoC (System on Chip) controller, DSP (Digital Signal Processing) controller, or MCU (Micorcontroller Unit) controller, etc.; Personal computers such as TVs and personal digital assistants (Personal Digital Assistant, PDA for short); the hardware device can also be a server, and the server can be arranged on one or more physical servers according to various factors such as functions and loads, or can be It is composed of distributed or centralized server clusters, which is not limited in this embodiment.

In this embodiment, the monitoring system communicates through the first network segment and the second network segment, and the first network segment and the second network segment work alternately. The network segment switching method specifically includes the following steps.

In step S11, it is detected whether the communication between the first network segment and the second network segment is abnormal.

Optionally, the detecting whether the communication between the first network segment and the second network segment is abnormal includes detecting whether there is network delay or communication interruption in the communication between the first network segment and the second network segment. That is, if there is a network delay or a communication interruption in the communication of the network segment, it will be considered that the communication is abnormal.

In step S12, if it is detected that the communication of the first network segment or the second network segment is abnormal, then resend the data request after switching from the network segment with abnormal communication to the network segment with normal communication, and make the first network segment and the second network segment change from two network segments to work alternately by only one of the network segments.

Specifically, in order to balance the load during normal operation, the monitoring system will communicate in two network segments (such as network segment A and network segment B) at the same time, and the two network segments are carried out alternately. If there is an abnormal situation such as network delay or communication interruption in one network segment during work, it will immediately switch to another network segment to resend the data request, without waiting for the communication status of the current network segment to be interrupted or to ping an IP in the LAN multiple times The switch will only be performed when the ping cannot pass, so the rapid switching of the communication network segment is realized, and the upload of key data and the issuance of key operation instructions are ensured.

For example, as shown in Figure 2, the monitoring system uses network segment A and network segment B for data transmission, and each network segment is equipped with routers, switches, PCs and other equipment. Network segment A and network segment B perform data transmission alternately, that is, network segment B is idle when network segment A is working, and network segment A is idle when network segment B is working. And if the network communication of network segment A is interrupted, all communication will be transmitted through network segment B. Therefore, the working mode of the network segment is changed from the original network segment A and network segment B to work alternately by network segment B only.

In step S13, if no abnormality is detected in the communication of the first network segment or the second network segment, return to step S11.

In step S14, a network fault diagnosis is performed on the network segment where communication is abnormal, and whether the network segment is abnormal is judged.

In step S15, if the diagnosis result is abnormal, return to step S12, and keep only one network segment working.

In step S16, if the diagnosis result is normal, the first network segment and the second network segment are resumed to work alternately.

Generally speaking, network fault diagnosis will be performed automatically after network segment A is abnormal; if the diagnosis result is normal, the normal communication of network segment A will continue to be resumed; if the diagnosis result is still not faulty, only network segment B will continue to communicate. Periodically (for example, every 5 minutes or 10 minutes), perform network fault diagnosis again until network segment A is diagnosed as normal, and then resume normal communication of network segment A.

In an optional implementation manner of this embodiment, the network segment switching method further includes steps as shown in FIG. 3 .

In step S31, record and store the abnormal communication information of the first network segment and the second network segment; wherein, the abnormal communication information at least includes timestamp information of abnormal occurrence, frequency information, fault diagnosis time-consuming information, or Restoring communication time-consuming information.

In step S32, analyzing the communication stability of the first network segment and the second network segment according to the abnormal communication information.

Specifically, there is an inverse relationship between the communication stability of the network segment and the frequency of abnormal occurrences, an inverse relationship with the time-consuming fault diagnosis, and an inverse relationship with the time-consuming recovery of communication. According to the frequency of abnormal communication in a certain network segment, the time spent on failure and the time spent on restoring communication, etc., after comprehensive consideration, a score data can be assigned to the network segment. The higher the score, the stronger the communication stability.

In step S33, according to the communication stability of the first network segment and the second network segment, the time ratio of alternate work between the first network segment and the second network segment is adjusted.

Specifically, according to the respective stability of the two network segments, the ratio of the time when the two network segments work alternately can be adjusted. For example, the original time ratio of network segment A and network segment B is 5:5, but after the analysis of communication stability, the stability of network segment A is much higher than that of network segment B, then it can be Tilt the time ratio of alternate work to network segment A, for example, set it to a ratio of 6:4 or even 7:3, so as to ensure that most of the time of the monitoring system is transmitted through a more stable network segment, thereby Improve the stability of the entire network transmission.

In an optional implementation manner of this embodiment, the network segment switching method further includes steps as shown in FIG. 4 .

In step S41, record and store the abnormal communication information of the first network segment and the second network segment; wherein, the abnormal communication information includes at least timestamp information of abnormal occurrence, frequency information, fault diagnosis time-consuming information, or Restoring communication time-consuming information.

In step S42, a fault prediction is performed on the communication abnormality of the first network segment and the second network segment according to the communication abnormality information.

Specifically, fault prediction can be performed on the network segment based on the time stamp information, frequency information, fault diagnosis time-consuming information, and communication recovery time-consuming information of the abnormal network segment. For example, if network segment A has more abnormal occurrences near a certain time stamp, and the frequency of occurrence is close to once a week, then it can be predicted that the probability of abnormal occurrence on network segment A near this time stamp in one week is extremely high; Segment A has a lot of abnormal occurrences near a certain time stamp, and the frequency of occurrence is close to once a week, and it usually takes about 5 minutes to reply to the communication each time, so it can be predicted that the next time when the abnormal occurrence of network segment A occurs, the communication consumption will be restored. about 5 minutes.

In step S43, frequency band switching and network fault diagnosis are performed in advance according to the prediction result.

For example, if it is predicted that network segment A has an extremely high probability of abnormal occurrence at a certain time stamp one week later, then network segment A can be avoided in advance and network segment B can be used to transmit data based on this prediction. For another example, if it is predicted that it will take about 5 minutes to restore communication when the next abnormal occurrence of network segment A occurs, then it can be set to avoid using the network segment within 5 minutes before and after the predicted time stamp of the next abnormal occurrence of network segment A A uses network segment B to transmit data instead. Therefore, network segment switching can be performed in advance through pre-judgment, which further improves network segment switching efficiency.

In an optional implementation manner of this embodiment, the monitoring system includes a third network segment; the network segment switching method further includes various steps as shown in FIG. 5 .

In step S51, it is detected whether the communication between the first network segment and the second network segment is abnormal.

In step S52, if it is detected that the communication between the first network segment and the second network segment is abnormal, switch from the current network segment to the third network segment.

In step S52, otherwise, keep the third network segment in an idle state.

That is to say, during the data transmission process of the monitoring system, in addition to the first network segment and the second network segment, a third network segment as an idle network segment is also set. The third network segment is usually in an idle state, and the first network segment and/or the second network segment are responsible for data transmission. In the extreme case where both the first network segment and the second network segment fail, the third network segment is no longer idle, but is responsible for all data transmission as a backup network segment in an emergency, thus greatly enhancing The network's ability to resist risks.

Embodiment two:

As shown in FIG. 6 , a schematic structural diagram of a network segment switching device of a monitoring system in an embodiment of the present invention is shown. The network segment switching device 60 of this embodiment includes a communication detection module 61 , a network segment switching module 62 , a fault diagnosis module 63 and a mode setting module 64 .

The communication detection module 61 is used to detect whether the communication of the first network segment and the second network segment is abnormal; the network segment switching module 62 is used for detecting that the communication of the first network segment or the second network segment is abnormal. The network segment with abnormal communication is switched to the network segment with normal communication, and the data request is resent; the fault diagnosis module 63 is used for network fault diagnosis for the network segment with abnormal communication; the mode setting module 64 is used for detection in the communication detection module. When the communication to the first network segment or the second network segment is abnormal, make the first network segment and the second network segment work alternately from the two network segments to only one of the network segments; When the diagnostic result of the abnormal network segment of the fault diagnosis module is abnormal, it will continue to work with only one network segment; and if the diagnostic result of the abnormal network segment is normal, the first network segment and the second The two network segments resume alternate work.

Optionally, the network segment switching device 60 further includes a record storage module 65 , an information analysis module 66 , an adjustment module 67 and a prediction module 68 . The record storage module 65 is used to record and store the abnormal communication information of the first network segment and the second network segment; wherein, the abnormal communication information at least includes timestamp information of abnormal occurrence, frequency information, fault diagnosis time-consuming information, Restoring communication time-consuming information. The information analysis module 66 is used for analyzing the communication stability of the first network segment and the second network segment according to the abnormal communication information; it is also used for communicating the first network segment and the second network segment according to the abnormal communication information Abnormal fault prediction. The adjustment module 67 is used to adjust the time ratio of the first network segment and the second network segment to work alternately according to the communication stability of the first network segment and the second network segment. The pre-judgment module 68 is used for predicting the communication abnormality of the first network segment and the second network segment according to the communication abnormality information, and performing frequency band switching and network fault diagnosis in advance according to the pre-judgment result.

It should be noted that the implementation manner of the network segment switching device in this embodiment is similar to the implementation manner of the network segment switching method in the embodiment, so details are not repeated here.

It should be understood that the division of the various modules of the above device is only a division of logical functions, which may be fully or partially integrated into one physical entity or physically separated during actual implementation. And these modules can all be implemented in the form of calling software through processing elements; they can also be implemented in the form of hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware. For example, the network segment switching module can be a separate processing element, and can also be integrated in a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and can be controlled by one of the above-mentioned devices. The processing element invokes and executes the function of the above network segment switching module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element mentioned here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, referred to as ASIC), or, one or more microprocessors ( digital signal processor (DSP for short), or one or more Field Programmable Gate Arrays (Field Programmable Gate Array, FPGA for short), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU for short) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC for short).

Embodiment three:

As shown in FIG. 7 , a schematic structural diagram of an electronic terminal in an embodiment of the present invention is shown. The electronic terminal provided by this example includes: a processor 71, a memory 72, and a communicator 73; the memory 72 is connected to the processor 71 and the communicator 73 through a system bus and completes mutual communication, and the memory 72 is used to store computer programs and communicate The processor 73 is used for communicating with other devices, and the processor 71 is used for running a computer program, so that the electronic terminal executes various steps such as the method for network segment switching.

The system bus mentioned above may be a Peripheral Component Interconnect (PCI for short) bus or an Extended Industry Standard Architecture (EISA for short) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The communication interface is used to realize the communication between the database access device and other devices (such as client, read-write library and read-only library). The memory may include a random access memory (Random Access Memory, RAM for short), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

The above-mentioned processor can be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; it can also be a digital signal processor (Digital Signal Processing, referred to as DSP) , Application Specific Integrated Circuit (ASIC for short), Field Programmable Gate Array (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

Embodiment four:

This embodiment provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the foregoing network segment switching method is implemented.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by hardware related to computer programs. The aforementioned computer program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

To sum up, this application provides a monitoring system network segment switching method, device, terminal and storage medium, which greatly improves the existing technology. The improved technical solution does not need to wait, and directly switches to the normal communication network segment for retransmission request to achieve the purpose of fast switching. In addition, the present invention analyzes and predicts past fault record information, assigns less time-consuming ratios to network segments where communication faults often occur, and avoids network segments that are prone to faults during certain specific periods of time through pre-judgment , thereby greatly improving the communication quality. Therefore, the present application effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments are only illustrative to illustrate the principles and effects of the present application, but are not intended to limit the present application. Any person familiar with the technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the application shall still be covered by the claims of the application.

Claims (6)

1. A network segment switching method of a monitoring system is characterized in that the monitoring system communicates through a first network segment and a second network segment, and the first network segment and the second network segment alternately work; the network segment switching method comprises the following steps:

detecting whether the communication between the first network segment and the second network segment is abnormal or not;

if the communication of the first network segment or the second network segment is detected to be abnormal, the data request is retransmitted after the network segment with abnormal communication is switched to the network segment with normal communication, and the first network segment and the second network segment are enabled to work alternately from two network segments to only one network segment;

network fault diagnosis is carried out on the network segment with communication abnormality;

if the diagnosis result is abnormal, continuously keeping the operation of only one network segment;

if the diagnosis result is that the network segment is recovered to be normal, the first network segment and the second network segment are enabled to recover to work alternately;

recording and storing the communication abnormal information of the first network segment and the second network segment; the communication abnormal information at least comprises timestamp information, frequency information, fault diagnosis time-consuming information and communication recovery time-consuming information of abnormal occurrence; analyzing the communication stability of the first network segment and the second network segment according to the communication abnormal information; adjusting the time ratio of the first network segment and the second network segment to alternately work according to the communication stability of the first network segment and the second network segment; performing fault pre-judgment on communication abnormity of the first network segment and the second network segment according to the communication abnormity information; and carrying out network segment switching and network fault diagnosis in advance according to the pre-judgment result.

2. The method of claim 1, wherein the detecting whether the communication between the first network segment and the second network segment is abnormal comprises detecting whether the communication between the first network segment and the second network segment has network delay or communication interruption.

3. The method of claim 1, wherein the monitoring system comprises a third network segment; the method further comprises the following steps:

if the communication between the first network segment and the second network segment is detected to be abnormal, switching from the current network segment to a third network segment;

otherwise, keeping the third network segment in an idle state.

4. A network segment switching device of a monitoring system is characterized by comprising:

the communication detection module is used for detecting whether the communication between the first network segment and the second network segment is abnormal or not;

the network segment switching module is used for switching from the network segment with abnormal communication to the network segment with normal communication and retransmitting the data request when the communication of the first network segment or the second network segment is detected to be abnormal;

the fault diagnosis module is used for carrying out network fault diagnosis on the network segment with abnormal communication;

the mode setting module is used for enabling the first network segment and the second network segment to be changed from the alternative work of the two network segments into the work of only one network segment when the communication detection module detects that the communication of the first network segment or the second network segment is abnormal; and when the diagnosis result of the fault diagnosis module to the network segment with the abnormal communication is abnormal, the fault diagnosis module continues to work only by one network segment; if the diagnosis result of the network segment with abnormal communication is normal, the first network segment and the second network segment are enabled to resume alternative work;

the recording and storing module is used for recording and storing the communication abnormal information of the first network segment and the second network segment; the communication abnormal information at least comprises timestamp information, frequency information, fault diagnosis time-consuming information and communication recovery time-consuming information of abnormal occurrence;

the information analysis module is used for analyzing the communication stability of the first network segment and the second network segment according to the communication abnormal information; the network node is also used for carrying out fault prejudgment on the communication abnormity of the first network segment and the second network segment according to the communication abnormity information;

the adjusting module is used for adjusting the time ratio of the first network segment and the second network segment which alternately work according to the communication stability of the first network segment and the second network segment;

and the prejudging module is used for prejudging the communication abnormity of the first network segment and the second network segment according to the communication abnormity information, and carrying out network segment switching and network fault diagnosis in advance according to a prejudging result.

5. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the network segment switching method of any one of claims 1 to 3.

6. An electronic terminal, comprising: a processor and a memory;

the memory is used for storing a computer program;

the processor is used for executing the computer program stored in the memory to cause the terminal to execute the network segment switching method according to any one of claims 1 to 3.

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