Underground water supply pipe network monitoring method and system based on Mesh network

Abstract

The invention discloses a buried water supply pipe network monitoring method and system based on a Mesh network, and the method comprises the steps: constructing a topological structure of the buried Mesh network with high penetrating power under the ground based on the characteristics of monitoring points of the water supply pipe network, and laying Mesh network sensor monitoring nodes to collect the data of the water supply pipe network; the method comprises the following steps: building a Mesh network underground by using a data acquisition sensor; connecting and communicating the buried Mesh network with an overground 4G / 5G mobile network by using a gateway; the Mesh network nodes collect operation data of the underground water supply pipe network and transmit the operation data to the gateway directly or indirectly through the relay, and the gateway sends the received data to the central server or the cloud platform through the 4G / 5G network for further analysis and storage. According to the invention, the Mesh network technology and the state monitoring of the water supply network are organically combined, so that the problem of insufficient transmission capability of the traditional monitoring technology in the underground environment is solved, and the coverage range of the monitored object is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless monitoring and early warning of buried water supply pipe networks, and in particular to a method and system for monitoring buried water supply pipe networks based on a Mesh network, and in particular to a method and system for effectively monitoring buried water supply pipe networks using a Mesh network that communicates with low-frequency electromagnetic waves. Background Art

[0002] With the acceleration of urbanization, the healthy and safe operation of water supply networks is crucial to urban life. Traditional water supply network monitoring technologies mostly rely on wired communications or high-frequency wireless communications, which face the challenges of large signal attenuation and insufficient coverage in buried environments.

[0003] Therefore, it is particularly urgent to develop an efficient wireless monitoring method suitable for buried environments. Summary of the invention

[0004] Due to the above-mentioned defects in the prior art, the present invention provides an efficient wireless monitoring method suitable for buried environments, which overcomes the problems of large signal attenuation and insufficient coverage in current wired communication or high-frequency wireless communication water supply network monitoring technologies in buried environments.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A buried water supply network monitoring method based on Mesh network includes the following steps:

[0007] (1) Based on the characteristics of the water supply network monitoring points, a topological structure of a buried Mesh network with strong penetration is constructed below the ground. Mesh network sensor monitoring nodes are deployed to collect water supply network data, including but not limited to temperature, flow, pressure, inclination, soil pressure, etc. Relay nodes are installed at necessary locations (the relay position is determined based on the signal loss situation) to enhance the stability and coverage of the network, ensure network coverage and optimize the data transmission path;

[0008] (2) A Mesh network is established below the ground using data acquisition sensors. The sensors are equipped with the same Mesh configuration information. When networking, the sensors are first powered on, self-checked and their wireless communication modules are initialized, and a network access request is sent to the network. After receiving the network access request, the gateway sends the network configuration parameters to the sensor to be networked through a wireless communication connection, so that the sensor to be networked can access the Mesh network according to the network configuration parameters.

[0009] (3) Use the gateway to connect the buried Mesh network to the ground 4G / 5G mobile network for communication;

[0010] (4) The mesh network nodes collect the operating data of the buried water supply network and transmit it directly or indirectly through relays to the gateway. The gateway sends the received data to the central server or cloud platform through the 4G / 5G network for further analysis and storage.

[0011] The buried water supply network monitoring method based on Mesh network of the present invention breaks through the limitations of traditional monitoring methods. It not only targets the monitoring objects in conventional monitoring wells, but also includes buried water pipes, valves, nodes and other key facilities, and innovatively realizes comprehensive coverage. By deploying multiple layers of sensors at monitoring points, real-time monitoring of multiple parameters such as the network operation status, pipeline structure, and operation environment is realized, thereby improving the ability to control the operation status of the water supply network. The buried Mesh network has strong penetration ability and can perform data interaction underground. It not only retains the characteristics of self-organizing networks, but also can realize stable and efficient data transmission in complex underground environments with multiple levels and multiple media, ensuring the reliability of data transmission and minimizing delays. The organic combination of Mesh network technology and water supply network status monitoring not only solves the problem of insufficient transmission capacity of traditional monitoring technology in underground environments, but also innovatively expands the coverage of monitoring objects, providing new technical support for the safe and stable operation of water supply networks, and has great application prospects.

[0012] As the preferred technical solution:

[0013] As described above, in a buried water supply network monitoring method based on a Mesh network, the transmission medium of the buried Mesh network is the stratum overlying the pipeline, which includes a multi-layer complex medium including aquifers, concrete and asphalt, and the penetration ability is not less than 2 m.

[0014] As described above, a buried water supply network monitoring method based on a Mesh network, the buried Mesh network uses low-frequency electromagnetic waves with strong penetrating power for communication;

[0015] The penetration capability of buried low-frequency electromagnetic waves refers to the maximum point-to-point penetration distance of a single-layer sensor;

[0016] The penetration capability of the buried mesh network refers to the maximum penetration distance of the signal between two sensors after considering the relay capability, which is calculated by multiplying the single-layer point-to-point maximum penetration distance by the maximum number of relay layers;

[0017] The low-frequency electromagnetic waves with strong penetrating power are the optimal usable frequency bands obtained through three-dimensional full-wave electromagnetic simulation software and field tests, and the specific frequency bands are 433 MHz, 915 MHz or 868 MHz.

[0018] The Mesh network of the present invention uses low-frequency electromagnetic waves for communication, which enhances the signal penetration in complex buried environments, realizes underground-to-underground and underground-to-ground data interaction in complex environments, makes monitoring no longer dependent on monitoring wells, and realizes monitoring of directly buried parts. Through this technology, the problem of insufficient transmission capacity of traditional monitoring technology in underground environments is solved, and the coverage of water supply network monitoring is innovatively expanded, providing new technical support for the safe and stable operation of water supply networks, which can effectively improve the monitoring efficiency and safety of urban water supply systems, and is suitable for large-scale water supply network monitoring.

[0019] As described above, a buried water supply network monitoring method based on Mesh network, in the topological structure of the buried Mesh network, each sensor node can communicate with adjacent nodes, and each sensor node with the function of collecting different data has a relay function to transmit the collected network data. When the main signal transmission path is unavailable due to failure or other problems, the network node can automatically find and connect to the nearby fulcrum to continue data transmission. The entire Mesh network has a maximum of 6 layers of relay capabilities. The entire Mesh network has a maximum of 6 layers of relay capabilities. The final network is determined by a comprehensive evaluation of the power consumption and data transmission quality of the entire Mesh network.

[0020] As described above, a buried water supply network monitoring method based on Mesh network is designed with low power consumption. The data acquisition sensor starts working in the set acquisition cycle, collects a set of data every 0.1 seconds, collects three sets of data in total, averages and sends the average value, and the data acquisition sensor sleeps in the non-working state. The sensor node is powered by a battery. For example, if the monitoring frequency is 1 time / hour, the average power consumption should not be higher than 50uA (3.6V), and the battery life can reach more than 8 years.

[0021] The present invention designs sensors for factors such as humidity, temperature, and interference in the underground environment. It not only has high-precision sensors, but also has a wireless communication unit. The data acquisition sensor adopts a low-power design to ensure that it can continue to operate for a long time. Each monitoring node can work independently and share data with other nodes through the Mesh network, forming a highly intelligent monitoring system.

[0022] The above-mentioned buried water supply network monitoring method based on Mesh network includes data such as water temperature, water flow, water pressure, pipeline inclination, soil pressure, pore water pressure, soil temperature, etc. in the pipeline of the water supply network.

[0023] In the above-mentioned buried water supply network monitoring method based on Mesh network, the gateway has dual-mode communication capability, configures the parameters of the underground Mesh network, including channels, network IDs, and security settings; configures 4G / 5G network access parameters, including SIM card installation, operator authentication, network frequency bands, and access to 4G / 5G mobile networks;

[0024] The gateway receives data packets from sensor nodes or relays, forwards data and system information to a central server or cloud platform via a 4G / 5G mobile network, and can issue network commands to optimize network reliability, including frequency hopping, relay cycle, RSSI threshold modification, etc.

[0025] In the above-mentioned buried water supply network monitoring method based on Mesh network, the collection cycle, network topology, transmission power, return cycle, relay duration, etc. of the Mesh network sensor monitoring node can be remotely controlled and the remote control instructions are sent to the gateway through the central server or cloud platform, and then sent to each data collection sensor by the gateway.

[0026] The buried mesh network dynamic self-organizing network is a proprietary wireless mesh network protocol developed based on IEEE 802.15.4 to provide interconnection and communication between sensor fulcrums and between fulcrums and gateways. Each node communicates with adjacent nodes to form a network. It is compatible with linear and star networks and can achieve 6-hop transmission.

[0027] The present invention also provides a buried water supply network monitoring system based on a Mesh network, including a plurality of data acquisition sensors, gateways and a central server or cloud platform deployed in various locations of the buried water supply network for real-time acquisition of various parameter data affecting the safe operation of the buried water supply network;

[0028] The data acquisition sensor is provided with a wireless communication unit and multiple data acquisition sensors are interconnected through a Mesh network. The gateway is connected to a central server or a cloud platform through a 4G / 5G mobile network and the gateway is also connected to the Mesh network.

[0029] As the preferred technical solution:

[0030] In the above-mentioned buried water supply network monitoring system based on Mesh network, the gateway is provided with a power supply module for supplying power to the gateway and is equipped with a solar charging panel, and the solar charging panel is connected to the power supply module through a wire.

[0031] The above technical solution is only a feasible technical solution of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0032] The above invention has the following advantages or beneficial effects:

[0033] (1) The buried water supply network monitoring method based on Mesh network of the present invention uses wireless data acquisition sensors as data acquisition and transmission elements. Compared with wired sensors, it is easy to install and arrange, and is not restricted by complex terrain. The wireless data acquisition sensors are connected to the gateway through the Mesh network, and then the gateway is connected to the central server or cloud platform through the 4G / 5G network;

[0034] (2) The buried water supply network monitoring method based on Mesh network of the present invention has strong penetration ability and is particularly suitable for data interaction underground. It organically combines Mesh network technology with the status monitoring of water supply network, which not only solves the problem of insufficient transmission capacity of traditional monitoring technology in underground environment, but also innovatively expands the coverage of monitoring objects, providing new technical support for the safe and stable operation of water supply network.

[0035] (3) The buried water supply network monitoring system based on Mesh network of the present invention has the advantages of stable data transmission, strong real-time performance, low maintenance cost and easy expansion in the complex underground medium environment. It is suitable for monitoring a large range of water supply networks and is of great significance to improving the safety and efficiency of urban water supply, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0037] Figure 1 It is a flow chart of the buried water supply network monitoring method based on Mesh network of the present invention;

[0038] Figure 2 It is a schematic diagram of the buried water supply network monitoring system based on Mesh network of the present invention. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0040] A buried water supply network monitoring method based on Mesh network, comprising the following steps (such as Figure 1 shown):

[0041] (1) Based on the characteristics of the water supply network monitoring points, a topological structure of a buried Mesh network with strong penetration is constructed below the ground. Mesh network sensor monitoring nodes are deployed to collect water supply network data (including water temperature, water flow, water pressure, pipeline inclination, soil pressure, pore water pressure, soil temperature, etc. in the water supply network pipes). Relay nodes are installed at necessary locations to enhance the stability and coverage of the network, ensure network coverage and optimize data transmission paths.

[0042] (2) A Mesh network is established below the ground using data acquisition sensors. The sensors are equipped with the same Mesh configuration information. When networking, the sensors are first powered on, self-checked and their wireless communication modules initialized, and a network access request is sent to the network. After receiving the network access request, the gateway sends the network configuration parameters to the sensors to be networked through a wireless communication connection, so that the sensors to be networked can access the Mesh network according to the network configuration parameters.

[0043] The buried Mesh transmission medium is the overlying stratum of the pipeline, which includes a multi-layer complex medium including aquifer, concrete and asphalt, with a penetration capability of not less than 2 m. The buried Mesh network uses low-frequency electromagnetic waves with strong penetration for communication. The penetration capability of buried low-frequency electromagnetic waves refers to the maximum point-to-point penetration distance of a single-layer sensor. The penetration capability of the buried Mesh network refers to the maximum signal penetration distance between two sensors after considering the relay capability. It is calculated by multiplying the maximum point-to-point penetration distance of a single layer by the maximum number of relay layers. The low-frequency electromagnetic waves with strong penetration are the optimal usable frequency bands obtained through three-dimensional full-wave electromagnetic simulation software and field tests. The specific frequency bands are 433MHz, 915MHz or 868MHz.

[0044] In the topological structure of the buried Mesh network, each sensor node can communicate with adjacent nodes, and each sensor node with the function of collecting different data also has the relay function to transmit the collected pipe network data. The entire Mesh network has a maximum relay capacity of 6 layers. The final network is determined by the comprehensive evaluation of the power consumption and data transmission quality of the entire Mesh network. The buried Mesh network adopts a low-power design. The data acquisition sensor starts working in the set collection cycle, collects a set of data every 0.1 seconds, and collects a total of three sets of data. The average value is sent after averaging. The data acquisition sensor is dormant when not working, and the sensor node is battery-powered;

[0045] (3) Use the gateway to connect the buried Mesh network to the ground 4G / 5G mobile network for communication;

[0046] The gateway has dual-mode communication capabilities and configures the parameters of the underground Mesh network, including channels, network IDs, and security settings; configures 4G / 5G network access parameters, including SIM card installation, operator authentication, network frequency bands, and access to 4G / 5G mobile networks;

[0047] (4) Mesh network nodes collect the operation data of the buried water supply network and transmit it directly or indirectly through relays to the gateway. The gateway sends the received data to the central server or cloud platform through the 4G / 5G network for further analysis and storage;

[0048] The collection cycle, network topology, transmission power, network return cycle, relay duration, etc. of the Mesh network sensor monitoring node can be remotely controlled, and the remote control instructions are sent to the gateway through the central server or cloud platform, and then sent to each data collection sensor by the gateway.

[0049] A buried water supply network monitoring system based on Mesh network, such as Figure 2 As shown, it includes multiple data acquisition sensors, gateways and central servers or cloud platforms deployed in various locations of the buried water supply network for real-time acquisition of various parameter data that affect the safe operation of the buried water supply network;

[0050] The data acquisition sensor is equipped with a wireless communication unit and multiple data acquisition sensors are connected to each other through a Mesh network. The gateway is connected to the central server or cloud platform through a 4G / 5G mobile network and the gateway is also connected to the Mesh network;

[0051] The gateway is provided with a power supply module for supplying power to the gateway and is configured with a solar charging panel, and the solar charging panel is connected to the power supply module through a wire.

[0052] It has been verified that the buried water supply network monitoring method based on Mesh network of the present invention uses wireless data acquisition sensors as data acquisition and transmission elements. Compared with wired sensors, its installation and layout are convenient and not restricted by complex terrain. The wireless data acquisition sensors are connected to the gateway through the Mesh network, and then the gateway is connected to the central server or cloud platform through the 4G / 5G network; the buried Mesh network has strong penetration ability and is particularly suitable for data interaction underground. The organic combination of Mesh network technology and the status monitoring of the water supply network not only solves the problem of insufficient transmission capacity of traditional monitoring technology in underground environments, but also innovatively expands the coverage of monitoring objects, providing new technical support for the safe and stable operation of the water supply network; the buried water supply network monitoring system based on Mesh network has the advantages of stable data transmission, strong real-time performance, low maintenance cost, and easy expansion in complex underground medium environments. It is suitable for large-scale water supply network monitoring, which is of great significance to improving urban water supply safety and efficiency, and has good application prospects.

[0053] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0054] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A buried water supply network monitoring method based on Mesh network, characterized in that: The following steps are involved: (1) Based on the characteristics of the water supply network monitoring points, a topological structure of a buried Mesh network with strong penetration is constructed below the ground. Mesh network sensor monitoring nodes are deployed to collect water supply network data. Relay nodes are installed at necessary locations to enhance the stability and coverage of the network, ensure network coverage and optimize data transmission paths. (2) A Mesh network is established below the ground using data acquisition sensors. The sensors are equipped with the same Mesh configuration information. When networking, the sensors are first powered on, self-checked and their wireless communication modules are initialized, and a network access request is sent to the network. After receiving the network access request, the gateway sends the network configuration parameters to the sensor to be networked through a wireless communication connection, so that the sensor to be networked can access the Mesh network according to the network configuration parameters. (3) Use the gateway to connect the buried Mesh network to the ground 4G / 5G mobile network for communication; (4) The mesh network nodes collect the operating data of the buried water supply network and transmit it directly or indirectly through relays to the gateway. The gateway sends the received data to the central server or cloud platform through the 4G / 5G network for further analysis and storage.

2. According to claim 1, a method for monitoring an underground water supply network based on a Mesh network is characterized in that: The buried Mesh network transmission medium is the stratum overlying the pipeline, which includes multiple layers of complex media such as aquifer, concrete and asphalt, and the penetration ability is not less than 2 m.

3. The method for monitoring an underground water supply network based on a Mesh network according to claim 2, characterized in that: The buried Mesh network uses low-frequency electromagnetic waves with strong penetration for communication; The penetration capability of buried low-frequency electromagnetic waves refers to the maximum point-to-point penetration distance of a single-layer sensor; The penetration capability of the buried mesh network refers to the maximum penetration distance of the signal between two sensors after considering the relay capability, which is calculated by multiplying the single-layer point-to-point maximum penetration distance by the maximum number of relay layers; The low-frequency electromagnetic waves with strong penetrating power are the optimal usable frequency bands obtained through three-dimensional full-wave electromagnetic simulation software and field tests, and the specific frequency bands are 433 MHz, 915 MHz or 868 MHz.

4. The method for monitoring an underground water supply network based on a Mesh network according to claim 1, characterized in that: In the topological structure of the buried Mesh network, each sensor node can communicate with adjacent nodes, and each sensor node with the function of collecting different data also has a relay function to transmit the collected pipe network data. The entire Mesh network has a maximum relay capacity of 6 layers. The final network is determined by a comprehensive evaluation of the power consumption and data transmission quality of the entire Mesh network.

5. The method for monitoring an underground water supply network based on a Mesh network according to claim 4, characterized in that: The buried Mesh network adopts a low-power design. The data acquisition sensor starts working at the set acquisition cycle, collecting a set of data every 0.1 seconds. A total of three sets of data are collected, and the average value is sent after averaging. The data acquisition sensor is dormant when not working, and the sensor node is powered by a battery.

6. The method for monitoring an underground water supply network based on a Mesh network according to claim 1, characterized in that: The water supply network data include water temperature, water flow, water pressure, pipeline inclination, soil pressure, pore water pressure, and soil temperature in the water supply network pipes.

7. The method for monitoring an underground water supply network based on a Mesh network according to claim 1, characterized in that: The gateway has dual-mode communication capabilities and configures the parameters of the underground Mesh network, including channels, network IDs, and security settings; configures 4G / 5G network access parameters, including SIM card installation, operator authentication, network frequency bands, and access to 4G / 5G mobile networks; The gateway receives data packets from sensor nodes or relays, and forwards the data and system information to a central server or cloud platform via a 4G / 5G mobile network.

8. The method for monitoring an underground water supply network based on a Mesh network according to claim 7, characterized in that: The collection cycle, network topology, transmission power, network return cycle, and relay duration of the mesh network sensor monitoring node can all be remotely controlled, and the remote control instructions are sent to the gateway through the central server or cloud platform, and then sent to each data collection sensor by the gateway.

9. A buried water supply network monitoring system based on Mesh network, characterized in that: It includes multiple data acquisition sensors, gateways and central servers or cloud platforms that are used to collect core parameter data representing the safe operation status of the buried water supply network in real time and are deployed at key locations of the buried water supply network; The data acquisition sensor is provided with a wireless communication unit and multiple data acquisition sensors are interconnected through a Mesh network. The gateway is connected to a central server or a cloud platform through a 4G / 5G mobile network and the gateway is also connected to the Mesh network.

10. The buried water supply network monitoring system based on Mesh network according to claim 9, characterized in that: The gateway is provided with a power supply module for supplying power to the gateway and is configured with a solar charging panel, and the solar charging panel is connected to the power supply module via a wire.

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