A video data transmission system and control method suitable for unmanned areas

Abstract

The present invention relates to the technical field of data transmission, and in particular to a video data transmission system suitable for an unmanned area and a control method thereof, comprising a plurality of master node units, the master node unit comprising a plurality of sub-node units, the plurality of sub-node units being communicatively connected together, the sub-node units comprising a main node module, a backup node module, a data temporary storage module, a sub-node control module, an energy supply module, a video acquisition module and a switching module; the present invention can comprehensively monitor the unmanned area through the plurality of sub-node units, and the sub-node units transmit data, the switching module will switch the operating states of the main node module and the backup node module according to the information monitored by the master node unit, when the main node module fails, the backup node module will start to transmit data, effectively solving the problem in the prior art that the transmission system cannot perform data transmission due to hardware failure, network interruption or natural disasters, and can significantly improve the reliability and business continuity of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of data transmission, and in particular to a video data transmission system suitable for unmanned areas and a control method thereof. Background Art

[0002] In China's vast territory, there are extensive uninhabited areas, which can be tens to hundreds of kilometers long. In recent years, due to people's concern about the environment, ecology, geology, and meteorology, as well as the needs of early development and construction of railways and power grids, these areas need to be monitored for a long time and accurately. The types of data monitored include the status data of the area (such as temperature, humidity and meteorology), image and video data (such as terrain and landform images). The data monitoring methods include automatically uploading data to the cloud or manually triggering the collection operation in the cloud at any time. However, due to the large span of these areas, inconvenient transportation, harsh geographical environment, and difficult power and network coverage, data collection and timely transmission have been greatly hindered. Therefore, it is very necessary to build a set of long-distance wireless communication technologies to achieve reliable transmission of various types of data in uninhabited areas.

[0003] For example, a long-distance data transmission system for uninhabited areas with application number CN202311692565.6 and authorization announcement date 20240517 includes a control center server and a left external network node and a right external network node connected to the control center server through 5G Internet, and also includes multiple intermediate transmission nodes connected in series deployed in the uninhabited area. The multiple intermediate transmission nodes establish a communication connection with the control center server through Beidou short messages. The first intermediate transmission node and the last intermediate transmission node of the multiple intermediate transmission nodes are respectively connected to the left external network node and the right external network node through wireless transmission. A communication connection is also established between two adjacent intermediate transmission nodes through Beidou short messages. The present invention realizes scalability in monitoring distance in uninhabited areas and ensures transmission rate through cascaded AP devices, and solves the problem of the 60-second transmission limit of civil Beidou short messages through cascaded Beidou modules. The present invention also discloses a long-distance data transmission method for uninhabited areas.

[0004] In order to realize real-time monitoring of no-man's land, monitoring equipment will be set up in the no-man's land, and data will be transmitted through remote transmission technology. In order to improve the reliability of data transmission, a video data transmission system will be set up to ensure the normal transmission of data. However, the environment in the no-man's land is relatively harsh. The video data transmission system is prone to hardware failure, network interruption or natural disasters. The system cannot be restored quickly and effectively, resulting in data loss, data transmission delay or failure. Therefore, it is urgent to design a video data transmission system suitable for no-man's land and its control method to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a video data transmission system and a control method thereof suitable for unmanned areas, so as to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A video data transmission system suitable for use in an unmanned area, comprising a plurality of master node units, wherein the master node unit comprises a plurality of sub-node units, and the plurality of sub-node units are communicatively connected together;

[0008] The sub-node unit includes a main node module, a backup node module, a data temporary storage module, a sub-node control module, an energy supply module, a video acquisition module and a switching module. The video acquisition module is used to collect video data of the corresponding monitoring position in the unmanned area. The video acquisition module uses a high-definition digital camera. The energy supply module is used to supply power for the operation of the sub-node unit. The energy supply module uses one or more of photovoltaic power generation equipment and wind power generation equipment. The sub-node control module is used to control the operation of the sub-node unit. The sub-node control module uses a multi-core chip. The data temporary storage module is used to temporarily collect data. The data temporary storage module uses NVR storage. The switching module switches the main node module according to the information monitored by the main node unit. , the running state of the backup node module is switched, the main node module and the backup node module are used to process the data collected by the video acquisition module, and the main node module and the backup node module are also used to transmit and process the data collected by the video acquisition module; the main node module and the backup node module both include a data communication submodule, a data processing submodule and a data access submodule, the data access submodule is used to receive the data collected by the video acquisition module and the data temporarily stored by the data temporary storage module, the data processing submodule includes a data judgment module, a data labeling module, and a data compression module, the data judgment module judges the size of the data accessed by the data access submodule through a judgment formula, and the judgment formula is as follows: ;

[0009] in, The maximum transmission rate of the data communication submodule. It is the memory size of the data received by the data access submodule. If S≥0.9, the data compression module will compress the data received by the data access submodule. If S<0.9, the data compression module will not operate. The data compression module is established using data compression technology. The data compression module is used to compress the data received by the data access submodule. The data labeling module adds information tags to the data received by the data access submodule and the data compressed by the data compression module through label generation technology. The data communication submodule transmits the data processed by the data processing submodule and the data accessed by the data access submodule through satellite communication, optical fiber communication, and long wave communication.

[0010] Furthermore, the total node unit includes a communication connection module, a node control module, a data tracing module, a data processing module, a data transmission module, a fault monitoring module and a data backup module. The communication connection module is used to connect the total node unit and the sub-node unit together for communication. The communication connection module is established by using satellite communication, optical fiber communication, and long-wave communication. There is an inter-transmission relationship between the communication connection module and the data communication sub-module. The node control module is used to control the operation of the total node unit. The data processing module is used to classify and summarize the data received by the communication connection module. The data processing module is established using correlation analysis technology. The data transmission module remotely transmits the data processed by the data processing module to the enterprise control center through long-distance communication technology. The data tracing module performs tracing based on the information tags in the data received by the communication connection module. The fault monitoring module is divided into a communication status monitoring sub-module, a transmission rate monitoring sub-module and a feedback sub-module. The communication status monitoring sub-module is used to monitor the communication status between the total node unit and the sub-node unit. The communication status monitoring sub-module is established based on the Phi Accrual Failure algorithm.

[0011] In another embodiment provided by the present invention, the transmission rate monitoring submodule judges the transmission state of the main node unit by a rate judgment formula, and the rate judgment formula is as follows: ;

[0012] in, It is the average transmission speed of the communication connection module and the data transmission module over a period of time. It is the minimum transmission speed of the communication connection module and the data transmission module. If V<1, there is a problem with the communication status of the total node unit, and the node control module controls the communication connection module and the data transmission module to change the communication mode. If V≥1, there is no problem with the communication status of the total node unit. The feedback submodule transmits the monitoring results of the communication status monitoring submodule and the transmission rate monitoring submodule to the child node unit. The switching module in the child node unit switches the operation of the main node module and the backup node module according to the feedback information. The data backup module uses a solid-state hard disk, and the data backup module is used to collect all data generated by the operation of the total node unit.

[0013] A video data transmission system control method applicable to unmanned areas comprises the following steps:

[0014] Step S1. Confirm the video acquisition point: obtain the terrain information of the uninhabited area and divide the video acquisition area;

[0015] Step S2. Constructing a transmission system: installing multiple sub-node units in the divided video acquisition areas and installing a master node unit at a central location to construct a local video data transmission system;

[0016] Step S3. Data collection and transmission: The video collection module in the sub-node unit collects the video data of the corresponding monitoring position in the unmanned area, and identifies and analyzes the video data, and compresses or transmits the video data according to the analysis results. After the sub-node unit completes the analysis, the main node unit receives the data analyzed by the sub-node unit through the communication connection module. The data is processed by the data processing module and stored in the data backup module. The data in the data backup module is transmitted to the enterprise control center through the data transmission module. In the process of transmitting data from the sub-node unit to the main node unit, the sub-node unit will label the data through the data labeling module. The data tracing module in the main node unit will identify the label in the data and determine which sub-node unit transmits the data.

[0017] Step S4. Monitoring and control: During the data transmission from the sub-node unit to the main node unit, the fault monitoring module will calculate and judge the communication status and communication rate between the sub-node unit and the main node unit, and the communication status and communication rate from the main node unit to the enterprise control center. According to the judgment result, the node control module adjusts the communication mode of the communication connection module and the data transmission module. In the data transmission process of the sub-node unit, the switching module will switch the operating status of the main node module and the backup node module according to the information monitored by the main node unit, so that the backup node module participates in the data transmission, thereby ensuring the continuous operation of the business.

[0018] In the above technical solution, the present invention provides a video data transmission system and control method suitable for unmanned areas, and the beneficial effects are:

[0019] (1) The present invention can comprehensively monitor the unmanned area through multiple sub-node units, and the sub-node units transmit data. The switching module will switch the operating status of the main node module and the backup node module according to the information monitored by the main node unit. When the main node module fails, the backup node module will start to transmit data, which effectively solves the problem in the prior art that the transmission system cannot transmit data due to hardware failure, network interruption or natural disasters, can significantly improve the reliability and business continuity of the system, improve the disaster recovery capability of the system, and ensure the high availability of the system.

[0020] (2) The present invention can form a local transmission system through sub-node units and main node units, thereby ensuring the reliability of video data transmission in vast uninhabited areas. At the same time, during the transmission process, the sub-node units will label the data through the data labeling module, and the data tracing module in the main node unit will identify and trace the labels in the data to determine which sub-node unit transmitted the data, so that when problems occur during the transmission process, the problem location can be quickly found. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of a system flow chart of a video data transmission system and a control method thereof applicable to an unmanned area according to an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a summary point unit provided in an embodiment of a video data transmission system and a control method thereof applicable to an unmanned area of ​​the present invention;

[0024] Figure 3 A schematic diagram of a sub-node unit provided in an embodiment of a video data transmission system and a control method thereof applicable to an unmanned area of ​​the present invention;

[0025] Figure 4 The present invention provides a method flow chart of a video data transmission system and a control method embodiment thereof applicable to an unmanned area. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-3As shown, an embodiment of the present invention provides a video data transmission system suitable for an unmanned area, comprising a plurality of master node units, the master node unit comprising a plurality of sub-node units, and the plurality of sub-node units are communicatively connected together;

[0028] The sub-node unit includes a main node module, a backup node module, a data temporary storage module, a sub-node control module, an energy supply module, a video acquisition module and a switching module. The video acquisition module is used to collect video data of the corresponding monitoring position in the unmanned area. The video acquisition module uses a high-definition digital camera. The energy supply module is used to supply power for the operation of the sub-node unit. The energy supply module uses one or more of photovoltaic power generation equipment and wind power generation equipment. The sub-node control module is used to control the operation of the sub-node unit. The sub-node control module uses a multi-core chip. The data temporary storage module is used to temporarily collect data. The data temporary storage module uses NVR storage. The switching module switches the main node module, the backup node module and the switching module according to the information monitored by the main node unit. The running state of the node module is switched. The main node module and the backup node module are used to process the data collected by the video acquisition module. The main node module and the backup node module are also used to transmit and process the data collected by the video acquisition module. The main node module and the backup node module include a data communication submodule, a data processing submodule and a data access submodule. The data access submodule is used to receive the data collected by the video acquisition module and the data temporarily stored by the data storage module. The data processing submodule includes a data judgment module, a data labeling module, and a data compression module. The data judgment module judges the size of the data accessed by the data access submodule through a judgment formula. The judgment formula is as follows: ;

[0029] in, The maximum transmission rate of the data communication submodule. It is the memory size of the data received by the data access submodule. If S≥0.9, the data compression module will compress the data received by the data access submodule. If S<0.9, the data compression module will not operate. The data compression module is established using data compression technology. The data compression module is used to compress the data received by the data access submodule. The data labeling module uses label generation technology to add information tags to the data received by the data access submodule and the data compressed by the data compression module. The data communication submodule transmits the data processed by the data processing submodule and the data accessed by the data access submodule through satellite communication, optical fiber communication, and long wave communication.

[0030] In another embodiment provided by the present invention, the total node unit includes a communication connection module, a node control module, a data tracing module, a data processing module, a data transmission module, a fault monitoring module and a data backup module. The communication connection module is used to connect the total node unit and the sub-node unit together for communication. The communication connection module is established by using satellite communication, optical fiber communication, and long-wave communication. There is a mutual transmission relationship between the communication connection module and the data communication sub-module. The node control module is used to control the operation of the total node unit. The data processing module is used to classify and summarize the data received by the communication connection module. The data processing module is established using correlation analysis technology. The data transmission module remotely transmits the data processed by the data processing module to the enterprise control center through long-distance communication technology. The data tracing module performs tracing based on the information tags in the data received by the communication connection module. The fault monitoring module is divided into a communication status monitoring sub-module, a transmission rate monitoring sub-module and a feedback sub-module. The communication status monitoring sub-module is used to monitor the communication status between the total node unit and the sub-node unit. The communication status monitoring sub-module is established based on the Phi Accrual Failure algorithm.

[0031] It should be noted that Phi Accrual Failure Detector is a fault detection algorithm used in distributed systems. It estimates the probability of node failure by counting the arrival time of heartbeat signals. The core idea of ​​the algorithm is to use exponential distribution to estimate the probability of node failure and decide whether to mark the node as failed based on this probability.

[0032] Rationale

[0033] ‌Phi Accrual Failure Detector uses exponential distribution to estimate the probability of node failure. The algorithm records the time interval of received heartbeat signals through a sliding window and uses this data to generate an exponential distribution to estimate the probability that the next heartbeat should arrive at the current moment. Specifically, the algorithm calculates the average interval time of the heartbeat signal and uses this average value to calculate the probability of node failure‌;

[0034] Algorithm steps:

[0035] ‌ (1) Collecting heartbeat signals: The algorithm continuously collects heartbeat signals from each node and records the arrival time of each heartbeat signal;

[0036] ‌ (2) Calculate the average interval time‌: Using the sliding window technique, the algorithm calculates the average interval time of the heartbeat signal;

[0037] ‌ (3) Estimation of failure probability‌: Based on the average interval time, the probability of node failure is calculated using the exponential distribution formula;

[0038] Decision: Based on the calculated failure probability, the algorithm decides whether to mark the node as failed. If the probability exceeds a certain threshold, the node is considered to have failed.

[0039] In another embodiment provided by the present invention, the transmission rate monitoring submodule judges the transmission state of the main node unit through a rate judgment formula, and the rate judgment formula is as follows: ;

[0040] in, It is the average transmission speed of the communication connection module and the data transmission module over a period of time. It is the minimum transmission speed of the communication connection module and the data transmission module. If V<1, there is a problem with the communication status of the total node unit. The node control module controls the communication connection module and the data transmission module to change the communication mode. If V≥1, there is no problem with the communication status of the total node unit. The feedback submodule transmits the monitoring results of the communication status monitoring submodule and the transmission rate monitoring submodule to the child node unit. The switching module in the child node unit switches the operation of the main node module and the backup node module according to the feedback information. The data backup module uses a solid-state hard disk, and the data backup module is used to collect all data generated by the operation of the total node unit.

[0041] A video data transmission system control method suitable for unmanned areas, such as Figure 4 As shown, the following steps are included:

[0042] Step S1. Confirm the video acquisition point: obtain the terrain information of the uninhabited area and divide the video acquisition area;

[0043] Step S2. Constructing a transmission system: installing multiple sub-node units in the divided video acquisition areas and installing a master node unit at a central location to construct a local video data transmission system;

[0044] Step S3. Data collection and transmission: The video collection module in the sub-node unit collects the video data of the corresponding monitoring position in the unmanned area, and identifies and analyzes the video data, and compresses or transmits the video data according to the analysis results. After the sub-node unit completes the analysis, the main node unit receives the data analyzed by the sub-node unit through the communication connection module. The data is processed by the data processing module and stored in the data backup module. The data in the data backup module is transmitted to the enterprise control center through the data transmission module. In the process of transmitting data from the sub-node unit to the main node unit, the sub-node unit will label the data through the data labeling module. The data tracing module in the main node unit will identify the label in the data and determine which sub-node unit transmits the data.

[0045] Step S4. Monitoring and control: During the data transmission from the sub-node unit to the main node unit, the fault monitoring module will calculate and judge the communication status and communication rate between the sub-node unit and the main node unit, and the communication status and communication rate from the main node unit to the enterprise control center. According to the judgment result, the node control module adjusts the communication mode of the communication connection module and the data transmission module. In the data transmission process of the sub-node unit, the switching module will switch the operating status of the main node module and the backup node module according to the information monitored by the main node unit, so that the backup node module participates in the data transmission, thereby ensuring the continuous operation of the business.

[0046] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A video data transmission system suitable for use in unmanned areas, comprising a plurality of master node units, characterized in that: The main node unit includes a plurality of sub-node units, and the plurality of sub-node units are communicatively connected together; The sub-node unit includes a main node module, a backup node module, a data temporary storage module, a sub-node control module, an energy supply module, a video acquisition module and a switching module. The video acquisition module is used to collect video data of the corresponding monitoring position in the unmanned area. The energy supply module is used to supply power to the sub-node unit. The sub-node control module is used to control the operation of the sub-node unit. The data temporary storage module is used to temporarily collect data. The switching module switches the operating status of the main node module and the backup node module according to the information monitored by the main node unit. The main node module and the backup node module are used to process the data collected by the video acquisition module. The main node module and the backup node module are also used to transmit and process the data collected by the video acquisition module. The master node module and the backup node module both include a data communication submodule, a data processing submodule and a data access submodule. The data access submodule is used to receive data collected by the video acquisition module and data temporarily stored by the data temporary storage module. The data processing submodule includes a data judgment module, a data labeling module and a data compression module. The data judgment module judges the size of the data accessed by the data access submodule through a judgment formula. The judgment formula is as follows: ; in, The maximum transmission rate of the data communication submodule. The memory size of the data access submodule receiving data. If S≥0.9, the data compression module will compress the data received by the data access submodule. If S<0.9, the data compression module will not operate. The data compression module is established using data compression technology. The data compression module is used to compress the data received by the data access submodule. The data labeling module uses label generation technology to add information tags to the data received by the data access submodule and the data compressed by the data compression module. The data communication submodule transmits the data processed by the data processing submodule and the data accessed by the data access submodule through satellite communication, optical fiber communication, and long-wave communication.

2. The video data transmission system suitable for unmanned areas according to claim 1, characterized in that: The video acquisition module uses a high-definition digital camera, and the energy supply module uses one or more of photovoltaic power generation equipment and wind power generation equipment.

3. The video data transmission system suitable for unmanned areas according to claim 1, characterized in that: The subnode control module uses a multi-core chip, and the data temporary storage module uses NVR storage.

4. The video data transmission system suitable for unmanned areas according to claim 1, characterized in that: The main node unit includes a communication connection module, a node control module, a data tracing module, a data processing module, a data transmission module, a fault monitoring module and a data backup module. The communication connection module is used to connect the main node unit and the sub-node unit together for communication. The communication connection module is established using satellite communication, optical fiber communication, and long-wave communication. There is an inter-transmission relationship between the communication connection module and the data communication sub-module.

5. The video data transmission system suitable for unmanned areas according to claim 4, characterized in that: The node control module is used to control the operation of the total node unit, and the data processing module is used to classify and summarize the data received by the communication connection module. The data processing module is established using correlation analysis technology.

6. The video data transmission system suitable for unmanned areas according to claim 4, characterized in that: The data transmission module remotely transmits the data processed by the data processing module to the enterprise control center through long-distance communication technology, and the data tracing module performs tracing based on the information tags in the data received by the communication connection module.

7. The video data transmission system suitable for unmanned areas according to claim 4, characterized in that: The fault monitoring module is divided into a communication status monitoring submodule, a transmission rate monitoring submodule and a feedback submodule. The communication status monitoring submodule is used to monitor the communication status between the main node unit and the sub-node unit. The communication status monitoring submodule is established based on the Phi Accrual Failure algorithm.

8. The video data transmission system suitable for unmanned areas according to claim 7, characterized in that: The transmission rate monitoring submodule judges the transmission status of the master node unit through a rate judgment formula, and the rate judgment formula is as follows: ； in, It is the average transmission speed of the communication connection module and the data transmission module over a period of time. It is the minimum transmission speed of the communication connection module and the data transmission module. If V<1, there is a problem with the communication status of the total node unit, and the node control module controls the communication connection module and the data transmission module to change the communication mode. If V≥1, there is no problem with the communication status of the total node unit. The feedback submodule transmits the monitoring results of the communication status monitoring submodule and the transmission rate monitoring submodule to the subnode unit, and the switching module in the subnode unit switches the operation of the main node module and the backup node module according to the feedback information.

9. The video data transmission system suitable for unmanned areas according to claim 4, characterized in that: The data backup module uses a solid state hard disk, and the data backup module is used to record all data generated by the operation of the main node unit.

10. A video data transmission system control method suitable for unmanned areas, characterized in that: The following steps are involved: Step S1. Confirm the video acquisition point: obtain the terrain information of the uninhabited area and divide the video acquisition area; Step S2. Constructing a transmission system: installing multiple sub-node units in the divided video acquisition areas and installing a master node unit at a central location to construct a local video data transmission system; Step S3. Data collection and transmission: The video collection module in the sub-node unit collects the video data of the corresponding monitoring position in the unmanned area, and identifies and analyzes the video data. The video data is compressed or transmitted according to the analysis results. The communication connection module in the master node unit receives the data. The data is processed by the data processing module and stored in the data backup module. The data is then transmitted to the enterprise control center through the data transmission module. In the process of transmitting data from the sub-node unit to the master node unit, the sub-node unit will label the data through the data labeling module. The data tracing module in the master node unit will identify the label in the data and determine which sub-node unit transmitted the data. Step S4. Monitoring and control: During the data transmission from the sub-node unit to the main node unit, the fault monitoring module will calculate and judge the communication status and communication rate between the sub-node unit and the main node unit, and the communication status and communication rate from the main node unit to the enterprise control center. According to the judgment result, the node control module adjusts the communication mode of the communication connection module and the data transmission module. In the data transmission process of the sub-node unit, the switching module will switch the operating status of the main node module and the backup node module according to the information monitored by the main node unit, so that the backup node module participates in the data transmission, thereby ensuring the continuous operation of the business.

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