Network coverage method and monitoring system based on Mesh networking equipment

Abstract

The invention discloses a network coverage method and a monitoring system based on Mesh networking equipment. The method comprises the following steps: taking single Mesh networking equipment as a networking node; mesh networking sub-links are virtually generated by adjusting a networking node connection mode, a plurality of networking nodes are combined to form a single sub-link unit group, a networking node is selected from each sub-link unit group to serve as a link node, each link node is connected to form the Mesh networking sub-links, and the Mesh networking sub-links are connected to form a plurality of network nodes. The number of the Mesh networking sub-links is not less than the number of networking nodes in a single sub-link unit group, and the Mesh networking sub-links generate wireless coverage layers with the same number as the Mesh networking sub-links; the Mesh networking sub-links are connected with each other through the networking nodes; the transmission data is divided into the same level as the Mesh networking sub-links in number, and the transmission priority is determined according to the level of the transmission data. The monitoring system comprises an acquisition layer, a network layer and an application layer. According to the invention, a wireless transmission network is laid in the cable tunnel with weak communication signals at low cost, and the network transmission efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel construction, and in particular relates to a network coverage method and a monitoring system based on Mesh networking equipment. Background Art

[0002] Cable laying construction and joint production need to be carried out in underground cable tunnels. Since there is no network signal in the cable tunnel during construction, mobile phones, walkie-talkies, etc. cannot be used normally. With the frequent occurrence of confined space operation accidents this year, due to the constraints of the tunnel network environment, the detection data of temperature, humidity, oxygen content, and toxic gas real-time monitoring equipment and the monitoring data of infrared cameras with real-time monitoring functions are difficult to transmit, making the implementation of visual monitoring of tunnel construction a blind spot, and the supervision of its safe operation and construction process has become a prominent problem.

[0003] Cable tunnels are confined space operations. Without effective network signals, modern management and control methods cannot be used normally. If the confined space conditions in the tunnel are not understood in time, dangerous accidents will occur. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, realize data transmission and visual monitoring inside and outside the cable tunnel, and provide a network coverage method and monitoring system for Mesh networking devices.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A network coverage method based on Mesh networking devices, connecting Mesh networking devices to generate a local area network, including the following steps: Use a single Mesh networking device as a networking node; By adjusting the connection mode of networking nodes, the Mesh networking sub-links are generated in a virtualized manner. The Mesh networking sub-links generate the same number of wireless coverage layers as the Mesh networking sub-links. Mesh networking sub-links are connected to each other through networking nodes; The transmission data is divided into levels equal to the number of Mesh networking sub-links, and the transmission priority is determined according to the level of the transmission data.

[0006] Preferably, the method for virtualizing and generating a Mesh networking sub-link by adjusting the connection mode of the networking node device includes: Multiple networking nodes are combined to form a single sub-link unit group, and networking nodes are selected from each sub-link unit group as link nodes. Each link node is connected to form a Mesh networking sub-link, and the number of Mesh networking sub-links is not less than the number of networking nodes in a single sub-link unit group.

[0007] Preferably, the method of connecting Mesh networking sub-links to each other through networking nodes includes: The number of connected link nodes in the sub-link unit group is determined according to the transmission priority. As the transmission priority increases, the number of connected link nodes in the sub-link unit group increases, and the number of other Mesh networking sub-links that the current Mesh networking sub-link can borrow also increases.

[0008] The present invention forms multiple ring networks through Mesh networking sub-links themselves, ensuring that individual link nodes can still transmit data back to the substation when they fail to operate due to failures or even when multiple link nodes are damaged at the same time, thereby ensuring the robustness of the overall chain network. The technical advantages of Mesh self-organizing networks are fully utilized, and wireless transmission networks are deployed at low cost in cable tunnels with no communication signals or weak network signals. According to the characteristics of self-organizing networks, when a certain point device fails, normal communication will be completed by other devices through networking, and the entire network will not be interrupted. Business communications in cable tunnels can be effectively guaranteed.

[0009] A monitoring system based on Mesh networking equipment, comprising: A collection layer, which is used to collect environmental data and personnel activity data in the tunnel and send the collected data to the network layer. The collection layer includes monitoring equipment; The network layer is used to receive the data collected by the collection layer in the tunnel and send it through the wide area network. The network layer includes Mesh networking devices arranged along the tunnel, and a single Mesh networking device is used as a networking node. The Mesh networking sub-links are virtualized and generated by adjusting the connection mode of the networking nodes. The Mesh networking sub-links generate wireless coverage layers with the same number as the Mesh networking sub-links. The Mesh networking sub-links are connected to each other through networking nodes. The Mesh networking devices determine the transmission priority according to the level of the collected data, and transmit the collected data according to the transmission priority. The level of the collected data is the same as the number of Mesh networking sub-links. The communication connection between the Mesh networking devices forms a local area network. The coverage range of the local area network is the entire tunnel. The local area network is connected to the wide area network through the sub-link unit group at the entrance of the tunnel. The sub-link unit group at the entrance of the tunnel is used to send the data collected by the collection layer through the wide area network. The application layer includes a data management unit and an application monitoring platform. The data management unit is used to receive data sent by the network layer from the wide area network and store and process data obtained by the collection layer in the tunnel. The application monitoring platform is used to display the collected data.

[0010] The present invention solves the problem of difficult data transmission for tunnel construction monitoring, realizes visualized monitoring of tunnel construction, and ensures the safety of construction operations.

[0011] Preferably, the monitoring equipment includes one or more of an image acquisition unit, an oxygen content detection unit, a temperature and humidity detection unit, a toxic gas detection unit, and a human sign monitoring unit. The image acquisition unit includes a camera for collecting image data, the oxygen content detection unit is used to collect the oxygen content in the tunnel, and the human sign monitoring unit includes a sign monitoring terminal for detecting the vital signs of construction personnel. The real-time collection and transmission of sensor data information such as temperature, humidity, and toxic gases in the tunnel by the monitoring equipment will ensure the stable and reliable operation of production operations. In addition, it can provide early warnings for sudden emergency accidents and send back real-time data to provide a basis for analysis and judgment for command.

[0012] Preferably, the collection layer also includes a handheld terminal for communication between people inside and outside the tunnel, and the handheld terminal is communicatively connected to the Mesh networking device.

[0013] Preferably, the acquisition layer also includes a human body sensing component, the sensing signal output end of the human body sensing component is connected to the control end of the image acquisition unit, and the human body sensing component is used to sense the activity information of people in the image acquisition area, and control the opening or closing of the image acquisition unit according to the activity information of people. Since each networking node needs to transmit video data, the forwarding amount of the sub-link Mesh networking device connected through multi-hop increases in a step-like manner. As the number of forwarding times increases, the wireless network resource occupancy also increases. By setting a human body sensing component to monitor the personnel environment and then controlling the opening and closing of the camera, the camera can be enabled on demand to save network resources.

[0014] Preferably, it also includes a shell, the Mesh networking device is detachably installed inside the shell, the monitoring device is arranged below the Mesh networking device, an infrared monitoring device is detachably installed at the bottom of the shell, the infrared monitoring device is communicatively connected with the monitoring device and the Mesh subnet device, and the shell is detachably installed in the tunnel. By integrating the real-time gas monitoring instrument, the Mesh networking device and the infrared monitoring device into a set of integrated equipment that is easy to load and unload, not only can the cable tunnel environment be monitored and managed in real time and dynamically, but the shell is also easy to disassemble and install, can be quickly deployed, and the integrated equipment can be reused, thereby improving the utilization efficiency of power grid equipment.

[0015] Preferably, the Mesh networking device completes networking through a Wireless Mesh network.

[0016] The present invention gives full play to the technical advantages of the self-organizing network of Mesh networking equipment, and deploys a wireless transmission network at low cost in a cable tunnel with no communication signal or weak network signal. It can access network cameras and communication equipment to transmit back videos, pictures and other information of the staff's work in real time, maintain real-time communication with the command center, realize undelayed command and sudden processing of emergency situations, have a more obvious and intuitive judgment and assessment of the staff's work efficiency and effectiveness, and can effectively ensure the personal safety of the staff and the compliance of the operating procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings: Figure 1 is a method block diagram of the present invention; Figure 2 is a connection diagram of a single sub-link unit group of the method of the present invention; Figure 3 It is a connection diagram of multiple sub-link unit groups of the method of the present invention; Figure 4 It is a hierarchical schematic diagram of the system of the present invention; Figure 5 It is a distribution diagram of the system of the present invention. DETAILED DESCRIPTION

[0018] like Figures 1 to 3 As shown, the present invention provides a network coverage method based on Mesh networking devices, connecting Mesh networking devices to generate a local area network, including the following steps: using a single Mesh networking device as a networking node; virtualizing and generating Mesh networking sub-links a by adjusting the connection mode of the networking nodes, the Mesh networking sub-links a generating the same number of wireless coverage layers as the Mesh networking sub-links a; the Mesh networking sub-links a are connected to each other through networking nodes; and the transmission data is divided into the same level as the number of the Mesh networking sub-links a, and the transmission priority is determined according to the level of the transmission data.

[0019] In this embodiment, the method for virtualizing and generating a Mesh networking sub-link a by adjusting the connection mode of the networking node devices includes: Combine multiple networking nodes to form a single sub-link unit group, select networking nodes from each sub-link unit group as link nodes, connect each link node to form a Mesh networking sub-link a, and the number of Mesh networking sub-links a is not less than the number of networking nodes in a single sub-link unit group.

[0020] In this embodiment, the method of connecting Mesh networking sub-links a to each other through networking nodes includes: The number of connected link nodes in the sub-link unit group is determined according to the transmission priority. As the transmission priority increases, the number of connected link nodes in the sub-link unit group increases, and the number of other Mesh networking sub-links a that the current Mesh networking sub-link a can borrow also increases.

[0021] The present invention forms multiple ring networks through the Mesh networking sub-link a itself, ensuring that individual link nodes can still transmit data back to the substation when they cannot operate due to a fault or even when multiple link nodes are damaged at the same time, thereby ensuring the robustness of the overall chain network.

[0022] like Figure 4 and Figure 5 As shown, the present invention provides a monitoring system based on Mesh networking devices, including: The collection layer is used to collect the environment data and personnel activity data in the tunnel, and send the collected data to the network layer. The collection layer includes monitoring equipment; Network layer: The network layer is used to receive the data collected by the collection layer in the tunnel and send it through the wide area network. The network layer includes Mesh networking devices set along the tunnel, and a single Mesh networking device serves as a networking node. The Mesh networking sub-link a is virtualized and generated by adjusting the connection mode of the networking nodes. The Mesh networking sub-link a generates the same number of wireless coverage layers as the Mesh networking sub-link a. The Mesh networking sub-links a are connected to each other through networking nodes. The Mesh networking device determines the transmission priority according to the level of the collected data, and transmits the collected data according to the transmission priority. The number of levels of the collected data is the same as the number of Mesh networking sub-links a. The communication connection between the Mesh networking devices forms a local area network. The coverage range of the local area network is the entire tunnel. The local area network is connected to the wide area network through the sub-link unit group at the entrance of the tunnel. The sub-link unit group at the entrance of the tunnel is used to send the data collected by the collection layer through the wide area network. Application layer: The application layer includes a data management unit and an application monitoring platform. The data management unit is used to receive data sent by the network layer from the wide area network, store and process data obtained by the collection layer in the tunnel, and the application monitoring platform is used to display the collected data.

[0023] In this embodiment, the monitoring equipment includes one or more of an image acquisition unit, an oxygen content detection unit, a temperature and humidity detection unit, a toxic gas detection unit, and a human sign monitoring unit. The image acquisition unit includes a camera for collecting image data, the oxygen content detection unit is used to collect the oxygen content in the tunnel, and the human sign monitoring unit includes a sign monitoring terminal for detecting the vital signs of construction personnel. The real-time collection and transmission of sensor data information such as temperature, humidity, and toxic gases in the tunnel by the monitoring equipment will ensure the stable and reliable operation of production operations. In addition, it can provide early warnings for sudden emergency accidents and send back real-time data to provide a basis for analysis and judgment for command.

[0024] In this embodiment, the collection layer also includes a handheld terminal for communication between people inside and outside the tunnel, and the handheld terminal is communicatively connected with the Mesh networking device.

[0025] In this embodiment, the acquisition layer also includes a human body sensing component, the sensing signal output end of the human body sensing component is connected to the control end of the image acquisition unit, and the human body sensing component is used to sense the activity information of people in the image acquisition area, and control the opening or closing of the image acquisition unit according to the activity information of people. Since each networking node needs to transmit video data, the forwarding amount of the sub-link Mesh networking device connected through multiple hops increases in a step-like manner. As the number of forwarding times increases, the wireless network resource occupancy also increases. By setting up a human body sensing component to monitor the personnel environment and then controlling the opening and closing of the camera, the camera can be enabled on demand to save network resources.

[0026] In this embodiment, the Mesh networking device completes networking through the Wireless Mesh network.

[0027] In this embodiment, according to the self-organizing characteristics of the Mesh networking device, each sub-link unit group has multiple Mesh networking sub-links a connected to other sub-link unit groups. Even if a networking node fails, normal communication will be continued by other networking nodes and transmitted through other Mesh networking sub-links a, without interruption of the entire network, providing strong guarantee for business communication in the cable tunnel. At the same time, wireless coverage of networking nodes in the tunnel is achieved, and new networking nodes can access the network through multi-hop access through surrounding networking nodes. Through the mesh or ring connection between networking nodes, the data packets during communication between networking nodes far away will be forwarded by multiple networking nodes and delivered point by point to the destination node.

[0028] Since the length of the Mesh networking sub-link a is usually shorter, the requirements for the antenna transmission distance and performance will be greatly reduced, reducing the cost of the antenna; and the shorter the wireless link, the lower the required transmission power, reducing the interference between RF signals, thereby reducing the self-interference of the entire network; since each node in the Wireless Mesh network is equal, the number of Mesh networking sub-links a connected to the same networking node will be reduced, and thus the number of Mesh networking sub-links a that require channel allocation will also be reduced, increasing the scalability of the network.

[0029] In this embodiment, a shell is also included, and the Mesh networking device is detachably installed inside the shell. The monitoring device is arranged below the Mesh networking device. The bottom of the shell is detachably installed with an infrared monitoring device, and the infrared monitoring device is connected to the monitoring device and the Mesh subnet device for communication. The shell is detachably installed in the tunnel. By integrating the real-time gas monitoring instrument, the Mesh networking device and the infrared monitoring device into a set of integrated devices that are easy to load and unload, not only can the cable tunnel environment be monitored and managed in real time and dynamically, but the shell is also easy to disassemble and install, and can be quickly arranged. The integrated device can be reused, thereby improving the utilization efficiency of the power grid equipment.

[0030] By integrating the Mesh networking equipment, monitoring equipment and infrared monitoring equipment with real-time video monitoring on the shell, loading and unloading are convenient, and the Mesh networking equipment, monitoring equipment and infrared monitoring equipment can be taken out of the tunnel together after the shell is removed from the tunnel. When a new tunnel is constructed, they can be quickly and conveniently arranged in the new tunnel. The integration of the devices between the systems is high, which facilitates construction.

[0031] In this embodiment: the specific working process is: the Mesh networking device is set in the tunnel, multiple networking nodes are set along the tunnel, the networking nodes are connected to form a local area network, and the connection between the Mesh networking device and the monitoring device and the application monitoring platform is established respectively. The monitoring device collects and sends the gas data, temperature and humidity data and image data in the tunnel, as well as the human vital signs monitoring data and the communication data of the personnel inside and outside the tunnel; the Mesh networking device receives the data collected by the monitoring equipment in the tunnel and sends it through the wide area network, the application monitoring platform receives the data and displays it in real time, and the on-site operators conduct command and dispatch according to the displayed data, conduct compliance command and emergency situation handling.

[0032] The present invention gives full play to the technical advantages of the self-organizing network of Mesh networking equipment, and deploys a wireless transmission network at low cost in a cable tunnel with no communication signal or weak network signal. It can access network cameras and communication equipment to transmit back videos, pictures and other information of the staff's work in real time, maintain real-time communication with the command center, realize undelayed command and sudden processing of emergency situations, have a more obvious and intuitive judgment and assessment of the staff's work efficiency and effectiveness, and can effectively ensure the personal safety of the staff and the compliance of the operating procedures.

[0033] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims

1. A network coverage method based on Mesh networking equipment, characterized in that: Connecting Mesh networking devices to form a local area network includes the following steps: Use a single Mesh networking device as a networking node; By adjusting the connection mode of networking nodes, the Mesh networking sub-links are generated in a virtualized manner. The Mesh networking sub-links generate the same number of wireless coverage layers as the Mesh networking sub-links. Mesh networking sub-links are connected to each other through networking nodes; The transmission data is divided into levels equal to the number of Mesh networking sub-links, and the transmission priority is determined according to the level of the transmission data.

2. The network coverage method of the Mesh networking device according to claim 1, characterized in that: The method of virtualizing and generating Mesh networking sub-links by adjusting the connection mode of networking node devices includes: Multiple networking nodes are combined to form a single sub-link unit group, and networking nodes are selected from each sub-link unit group as link nodes. Each link node is connected to form a Mesh networking sub-link, and the number of Mesh networking sub-links is not less than the number of networking nodes in a single sub-link unit group.

3. The network coverage method of the Mesh networking device according to claim 1, characterized in that: Methods for connecting mesh networking sub-links to each other through networking nodes include: The number of connected link nodes in the sub-link unit group is determined according to the transmission priority. As the transmission priority increases, the number of connected link nodes in the sub-link unit group increases, and the number of other Mesh networking sub-links that the current Mesh networking sub-link can borrow also increases.

4. A monitoring system based on Mesh networking equipment, characterized in that: include: A collection layer, which is used to collect environmental data and personnel activity data in the tunnel and send the collected data to the network layer. The collection layer includes monitoring equipment; The network layer is used to receive the data collected by the collection layer in the tunnel and send it through the wide area network. The network layer includes Mesh networking devices arranged along the tunnel, and a single Mesh networking device is used as a networking node. The Mesh networking sub-links are generated by virtualization by adjusting the connection mode of the networking nodes. The Mesh networking sub-links generate the same number of wireless coverage layers as the Mesh networking sub-links. The Mesh networking sub-links are interconnected through networking nodes; the Mesh networking device determines the transmission priority according to the level of the collected data, and transmits the collected data according to the transmission priority. The level of the collected data is the same as the number of Mesh networking sub-links. The communication connection between the Mesh networking devices forms a local area network. The coverage of the local area network is the entire tunnel. The local area network is connected to the wide area network through the sub-link unit group at the entrance of the tunnel. The sub-link unit group at the entrance of the tunnel is used to send the data collected by the collection layer through the wide area network; The application layer includes a data management unit and an application monitoring platform. The data management unit is used to receive data sent by the network layer from the wide area network and store and process data obtained by the collection layer in the tunnel. The application monitoring platform is used to display the collected data.

5. The monitoring system based on Mesh networking equipment according to claim 4, characterized in that: The monitoring equipment includes one or more of an image acquisition unit, an oxygen content detection unit, a temperature and humidity detection unit, a toxic gas detection unit, and a human vital sign monitoring unit. The image acquisition unit includes a camera for collecting image data, the oxygen content detection unit is used to collect the oxygen content in the tunnel, and the human vital sign monitoring unit includes a vital sign monitoring terminal for detecting the vital signs of construction personnel.

6. The monitoring system based on Mesh networking equipment according to claim 4, characterized in that: The collection layer also includes a handheld terminal for communication between people inside and outside the tunnel, and the handheld terminal is communicatively connected with the Mesh networking device.

7. The monitoring system based on Mesh networking equipment according to claim 4, characterized in that: The acquisition layer also includes a human body sensing component, a sensing signal output end of the human body sensing component is connected to the control end of the image acquisition unit, and the human body sensing component is used to sense the activity information of people in the image acquisition area and control the opening or closing of the image acquisition unit according to the activity information of people.

8. The monitoring system based on Mesh networking equipment according to claim 4, characterized in that: It also includes a shell, the Mesh networking device can be detachably installed inside the shell, the monitoring device is arranged below the Mesh networking device, an infrared monitoring device can be detachably installed at the bottom of the shell, the infrared monitoring device is communicatively connected with the monitoring device and the Mesh subnet device, and the shell can be detachably installed in the tunnel.

9. The monitoring system based on Mesh networking equipment according to claim 4, characterized in that: The Mesh networking device completes networking through the Wireless Mesh network.

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