CN111459073A - Measurement and control system and method for underground cable channel - Google Patents
Measurement and control system and method for underground cable channel Download PDFInfo
- Publication number
- CN111459073A CN111459073A CN202010302994.8A CN202010302994A CN111459073A CN 111459073 A CN111459073 A CN 111459073A CN 202010302994 A CN202010302994 A CN 202010302994A CN 111459073 A CN111459073 A CN 111459073A
- Authority
- CN
- China
- Prior art keywords
- cable channel
- nodes
- mobile
- wireless
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 19
- 230000007613 environmental effect Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Automation & Control Theory (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a measurement and control system and a measurement and control method of an underground cable channel, which comprise a ground monitoring center and a plurality of mobile nodes which freely move in the underground cable channel; the mobile nodes are all provided with environment monitoring equipment for acquiring environment information in the cable channel; the mobile nodes are also provided with wireless network equipment and distance monitoring equipment which are used for connecting the mobile nodes with each other to form a wireless ad hoc network; the mobile node transmits the environment information to the ground monitoring center through a wireless network in a multi-hop mode, and environment monitoring of the whole underground cable channel is achieved. The system has the advantages of low cost, flexible structure, convenient detection, difficult interference by external factors and strong environment adaptability.
Description
Technical Field
The invention relates to a monitoring system, in particular to a measurement and control system of an underground cable channel and a construction method thereof.
Background
In the last 70 th century, the united states department of defense advanced research project initiative initiated a novel research project, packet radio network technology. Therefore, a novel network technology is generated, a wireless packet communication network which can operate in an environment without being limited by fixed or wired infrastructure aims to meet the needs of a mobile information system which is required by military application, rapidly develops and has high survivability, and research of the novel network technology promotes the development of wireless ad hoc network research and development.
The wireless self-organizing network is a multi-hop temporary autonomous system consisting of a group of communication terminals with wireless receiving and transmitting devices, the terminals not only have the functions of receiving and transmitting signals, but also have the functions of routing and message forwarding, and can form any network topology structure through wireless connection. The network does not need fixed infrastructure support, the node is generally a portable mobile terminal device, and the wireless device acquires the node position to realize the communication of the node, so the wireless self-organizing network can be widely applied to the condition that temporary communication is needed but no wired device is available. Because the wireless signal coverage of the nodes is very limited, two nodes which cannot directly communicate need to rely on other relay nodes to forward data to realize communication. Each node in the network has a routing function, and can search the relay node according to the direction of the destination node and forward data. Compared with other communication networks, the ad hoc network has the following characteristics:
1) the self-organizing property of the network-the self-organizing network is compared with the conventional communication network, the biggest difference is that the mobile communication network can be quickly built at any time and any place without the support of the existing information infrastructure;
2) in a dynamically changing network topology-ad hoc network, mobile communication user terminals can move in the network at any speed and in any mode, and the network topology formed by the mobile terminals through wireless channels can change at any time;
3) limited wireless transmission bandwidth-because ad hoc networks adopt wireless transmission module technology as the underlying communication means, and because of the physical characteristics of wireless channels, the network bandwidth which can be provided by the ad hoc networks is much lower than that of wired channels;
4) the limitation of mobile terminals-in ad hoc networks, user terminals usually take PAD, palmtop or handheld computers as the main form;
5) the user terminals in the distributed control network-ad hoc network have both independent routing and host functions, a network center control point does not exist, the positions between the user terminals are equal, and a network routing protocol usually adopts a distributed control mode, so that the distributed control network has strong survivability.
The cable channel is located underground, is not easy to form linkage with information infrastructure, and is difficult to apply by means of a wireless information transmission technology of the base station. In addition, the cable channel is long and narrow, the coverage area of the wireless equipment is effective, and the environment monitoring of the whole cable channel is difficult to realize.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems, the invention provides a measurement and control system and a measurement and control method for an underground cable channel, which realize the environmental monitoring of the whole cable channel without depending on information infrastructure.
The technical scheme is as follows: the technical scheme adopted by the invention is a measurement and control system of an underground cable channel, which comprises a ground monitoring center and a plurality of mobile nodes which freely move in the underground cable channel; the mobile nodes are all provided with environment monitoring equipment for acquiring environment information in the cable channel; the mobile nodes are also provided with wireless network equipment and distance monitoring equipment which are used for connecting the mobile nodes with each other to form a wireless ad hoc network; the mobile node transmits the environment information to the ground monitoring center through a wireless network in a multi-hop mode, and environment monitoring of the whole underground cable channel is achieved.
The environment monitoring equipment comprises a temperature sensor and a humidity sensor which are used for collecting temperature and humidity information in the cable channel.
The environment monitoring device comprises an infrared camera for collecting image information in the cable channel.
The mobile node adopts a mobile robot with the volume suitable for a cable channel.
The invention also provides a measurement and control method applied to the underground cable channel measurement and control system, which comprises the following steps:
(1) the ground monitoring center selects part of mobile nodes as base station nodes; the step (1) of selecting part of the mobile nodes as base station nodes means that the ground monitoring center selects the mobile nodes capable of establishing a stable information transceiving channel with the ground monitoring center as communication nodes, or selects the mobile nodes with the strongest communication strength as communication nodes.
(2) The ground monitoring center measures the distance between each mobile node and the wireless connection relation between each mobile node according to the distance monitoring equipment to obtain a real-time topological structure of the wireless ad hoc network, and the step (3) is carried out;
(3) the ground monitoring center adds a new mobile node according to the real-time topological structure and the monitoring range of the environment monitoring equipment, repeats the step (2) until the monitoring range covers the whole cable channel, completes the construction of the self-organizing network, realizes the environment monitoring of the whole underground cable channel with the least number of nodes, and enters the next step; wherein, the adding of the mobile node in the step (3) includes the following processes:
(31) the newly added mobile node sends out a network access request;
(32) the mobile node closest to the newly added node in the existing wireless ad hoc network structure receives the request of the newly added node and verifies whether the newly added node is matched with the wireless network or not, and if the information is matched, the mobile node responds to the network access request;
(33) and the newly added node replies the response after receiving the response, and when the reply is received by the mobile node closest to the newly added node, the two mobile nodes form communication.
(4) The ground monitoring center selects an information transmission path for each mobile node in the wireless ad hoc network, and the mobile nodes wirelessly transmit control signals and environmental information with the ground monitoring center in a multi-hop mode, so that the environmental monitoring of the whole underground cable channel is realized. The ground monitoring center in step (4) selects an information transmission path for each mobile node in the wireless ad hoc network, which means that the ground monitoring center selects an optimal path with the shortest transmission path as the information transmission path of each mobile node.
In order to ensure the damage resistance of the system and the wireless transmission rate, the maximum distance between adjacent nodes in the measurement and control method does not exceed half of the wireless limit transmission distance.
Has the advantages that: the invention realizes the whole-section internal environment monitoring of the cable channel by using the mobile node, does not need to depend on information infrastructure, can independently form a communication network by using the wireless mobile node, and simultaneously forms a network topology structure by using the distance between the network nodes and the monitoring range of the wireless equipment, realizes the monitoring of the environmental information of the whole cable channel by using the wireless nodes as few as possible, and reduces the cost of the ad hoc network.
Drawings
FIG. 1 is a schematic diagram of a mobile ad hoc network measurement and control system according to the present invention;
FIG. 2 is a flow chart of the node network access according to the present invention;
FIG. 3 is a diagram illustrating the network topology change of the node access network according to the present invention;
fig. 4 is a network topology change diagram of a newly added node when a terminal according to the present invention is damaged.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The mobile ad hoc network measurement and control system for the underground cable channel is combined with the specific situation of the cable channel, adopts a plurality of mobile wireless nodes to form a wireless ad hoc network in the cable channel, then completes the monitoring of the underground cable channel through the environment monitoring equipment arranged on the mobile nodes, and transmits data to the ground monitoring center. As shown in fig. 1, the system of the present invention includes a ground monitoring center and a plurality of mobile nodes. Each mobile node carries a wireless network device and a distance monitoring device, and each wireless network device can be connected with each other so as to form a wireless ad hoc network. The mobile wireless node can use a mobile robot with the volume suitable for the cable channel, the mobile robot can move freely in the channel, and a temperature sensor, a humidity sensor or an image sensor is arranged on the mobile robot, so that the temperature, the humidity and/or the image information in the cable channel can be collected. The image sensor is preferably an infrared camera. The distance monitoring device can adopt a wireless distance monitoring device. Different network topological structures are formed along with the network exit and the network entry of the nodes, and according to the distance between the nodes and the monitoring range of the wireless equipment, the environment information monitoring of the whole cable channel can be realized by using the nodes as few as possible.
The invention also provides a measurement and control method applied to the underground cable channel measurement and control system, which comprises the following steps:
(1) the ground monitoring center selects part of mobile nodes as base station nodes;
(2) the ground monitoring center measures the distance between each mobile node and the wireless connection relation between each mobile node according to the distance monitoring equipment to obtain a real-time topological structure of the wireless ad hoc network, and the step (3) is carried out;
(3) the ground monitoring center adds a new mobile node according to the real-time topological structure and the monitoring range of the environment monitoring equipment, repeats the step (2) until the monitoring range covers the whole cable channel, completes the construction of the self-organizing network, realizes the environment monitoring of the whole underground cable channel with the least number of nodes, and enters the next step;
(4) the ground monitoring center selects an information transmission path for each mobile node in the wireless ad hoc network, and the mobile nodes wirelessly transmit control signals and environmental information with the ground monitoring center in a multi-hop mode, so that the environmental monitoring of the whole underground cable channel is realized.
Each node is networked through a wireless protocol, and the network access process is shown in fig. 2. After networking is successful, the distance between the nodes is measured through an algorithm, and the real-time topological structure of the network is obtained according to the wireless connection relation between the nodes. When a new wireless node is accessed to the network, the new wireless node sends an access request, and then the wireless node closest to the new node in the existing wireless ad hoc network structure receives the request of the new node and verifies whether the wireless node is matched with the wireless network. And if the information is matched, responding to the network access request, replying the response after the newly added node receives the response, and forming communication between the two wireless nodes after the reply is received by the wireless node closest to the newly added node. At this time, the newly added node is accessed into the wireless ad hoc network. When the node exits the network or is lost in the network, if the wireless node which is originally connected with the wireless node and is far away from the ground monitoring center is still connected with other wireless nodes in the network, the lost node has no influence on the network; if the wireless node loses connection with the network, the wireless node sends a network access request to the original wireless network, and the process is the same as the network access of the newly added wireless node. The ground monitoring center is provided with a wireless transceiver for communicating with a part of mobile nodes in the underground cable channel. Selecting part of mobile nodes as base station nodes from all mobile nodes, for example, selecting one or more mobile nodes capable of establishing a stable information transceiving channel with a ground monitoring center as the base station nodes, or selecting one or more mobile nodes with the strongest communication strength as the base station nodes, then selecting information transmission paths for each wireless node in the network according to the real-time topological structure of the network, for example, selecting the optimal path with the shortest transmission path, and performing wireless transmission of control signals and environmental information with the ground monitoring center in a multi-hop manner, thereby realizing environmental monitoring of the whole underground cable channel.
With the exit and the entrance of each node, the network automatically forms a new topology structure to ensure the expansion of the monitoring range and the stability of the network by combining the distance between the nodes and the wireless propagation distance, the network topology change diagram of the node entering and exiting the network is shown in fig. 3, and the network topology change of the newly added node is shown in fig. 4 when one terminal is damaged.
When the number of nodes in the network changes, the existing nodes in the network can automatically adjust the nodes closest to the nodes according to the positions of the newly added nodes/lost nodes, and other nodes move along to form a new network topology structure, wherein the maximum distance between the adjacent nodes is not more than half of the wireless limit transmission distance (the distance is determined to be 25m according to the wireless module distance adopted in the design) in the design, so that the damage resistance of the system and the wireless transmission rate are ensured.
Claims (9)
1. The utility model provides an underground cable channel's observing and controlling system which characterized in that: the system comprises a ground monitoring center and a plurality of mobile nodes which freely move in an underground cable channel; the mobile nodes are all provided with environment monitoring equipment for acquiring environment information in the cable channel; the mobile nodes are also provided with wireless network equipment and distance monitoring equipment which are used for connecting the mobile nodes with each other to form a wireless ad hoc network; the mobile node transmits the environment information to the ground monitoring center through a wireless network in a multi-hop mode, and environment monitoring of the whole underground cable channel is achieved.
2. The underground cable channel measurement and control system of claim 1, wherein: the environment monitoring equipment comprises a temperature sensor and a humidity sensor which are used for collecting temperature and humidity information in the cable channel.
3. The underground cable channel measurement and control system of claim 1, wherein: the environment monitoring device comprises an infrared camera for collecting image information in the cable channel.
4. The underground cable channel measurement and control system of claim 1, wherein: the mobile node adopts a mobile robot with the volume suitable for a cable channel.
5. The measurement and control method applied to the underground cable channel measurement and control system of claim 1 is characterized by comprising the following steps:
(1) the ground monitoring center selects part of mobile nodes as base station nodes;
(2) the ground monitoring center measures the distance between each mobile node and the wireless connection relation between each mobile node according to the distance monitoring equipment to obtain a real-time topological structure of the wireless ad hoc network, and the step (3) is carried out;
(3) the ground monitoring center adds a new mobile node according to the real-time topological structure and the monitoring range of the environment monitoring equipment, repeats the step (2) until the monitoring range covers the whole cable channel, completes the construction of the self-organizing network, realizes the environment monitoring of the whole underground cable channel with the least number of nodes, and enters the next step;
(4) the ground monitoring center selects an information transmission path for each mobile node in the wireless ad hoc network, and the mobile nodes wirelessly transmit control signals and environmental information with the ground monitoring center in a multi-hop mode, so that the environmental monitoring of the whole underground cable channel is realized.
6. The underground cable channel measurement and control method according to claim 5, wherein: the ground monitoring center selecting part of the mobile nodes as base station nodes in the step (1) means that the ground monitoring center selects the mobile nodes capable of establishing a stable information transceiving channel with the ground monitoring center as communication nodes, or selects the mobile nodes with the strongest communication strength as communication nodes.
7. The underground cable channel measurement and control method according to claim 5, wherein: the adding of the mobile node in the step (3) comprises the following processes:
(31) the newly added mobile node sends out a network access request;
(32) the mobile node closest to the newly added node in the existing wireless ad hoc network structure receives the request of the newly added node and verifies whether the newly added node is matched with the wireless network or not, and if the information is matched, the mobile node responds to the network access request;
(33) and the newly added node replies the response after receiving the response, and when the reply is received by the mobile node closest to the newly added node, the two mobile nodes form communication.
8. The underground cable channel measurement and control method according to claim 5, wherein: the ground monitoring center in the step (4) selects an information transmission path for each mobile node in the wireless ad hoc network, which means that the ground monitoring center selects the optimal path with the shortest transmission path as the information transmission path of each mobile node.
9. The underground cable channel measurement and control method according to claim 5, wherein: in the method, the maximum distance of the adjacent nodes does not exceed half of the wireless limit transmission distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302994.8A CN111459073A (en) | 2020-04-16 | 2020-04-16 | Measurement and control system and method for underground cable channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302994.8A CN111459073A (en) | 2020-04-16 | 2020-04-16 | Measurement and control system and method for underground cable channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111459073A true CN111459073A (en) | 2020-07-28 |
Family
ID=71684542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010302994.8A Pending CN111459073A (en) | 2020-04-16 | 2020-04-16 | Measurement and control system and method for underground cable channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111459073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113950117A (en) * | 2021-10-13 | 2022-01-18 | 国网江苏省电力有限公司无锡供电分公司 | Low-delay image transmission method based on software defined network in tunnel environment |
-
2020
- 2020-04-16 CN CN202010302994.8A patent/CN111459073A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113950117A (en) * | 2021-10-13 | 2022-01-18 | 国网江苏省电力有限公司无锡供电分公司 | Low-delay image transmission method based on software defined network in tunnel environment |
| CN113950117B (en) * | 2021-10-13 | 2023-06-27 | 国网江苏省电力有限公司无锡供电分公司 | Low-delay image transmission method based on software defined network in tunnel environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107148071B (en) | Ubiquitous access method and system based on low-power-consumption wide area network and Mesh fusion | |
| Dong et al. | A survey on mobility and mobility-aware MAC protocols in wireless sensor networks | |
| US8184601B2 (en) | Method for radio communication in a wireless local area network wireless local area network and transceiving device | |
| US8538453B2 (en) | Location tracking method in coordinator-based wireless network | |
| KR20050020727A (en) | apparatus and method for collecting active route topology information in a mobile ad hoc network | |
| CN101087226A (en) | Method of establishing network topology capable of carrying out relay transmission among subnetworks in backbone network | |
| KR20090031118A (en) | Method and apparaturs for connecting network in local area mobile communication terminal | |
| CN111200858A (en) | Networking scheme of dual-mode hybrid network based on broadband carrier and narrowband wireless | |
| CN111526557B (en) | Wireless ad hoc network routing information acquisition method | |
| KR20090088114A (en) | A method for communication using received signal strength in a wireless sensor network and an apparatus thereof | |
| WO2014058229A1 (en) | Device and method for managing topology of mobile ad hoc network | |
| JP4629065B2 (en) | Device for selecting beamform direction | |
| KR20220012416A (en) | Directional beacon transmission and reception activity indication | |
| Park et al. | The implementation of indoor location system to control ZigBee home network | |
| EP2507646B1 (en) | Message-based location of mobile network nodes | |
| CN111459073A (en) | Measurement and control system and method for underground cable channel | |
| Peng | A novel adaptive mobility-aware MAC protocol in wireless sensor networks | |
| CN211718747U (en) | Measurement and control system for underground cable channel | |
| KR100639779B1 (en) | Master Selection Algorithm for minimal Power Consumption | |
| CN112799010B (en) | Indoor positioning system and method | |
| CN110061772B (en) | Aircraft cluster self-organizing network construction method based on photoelectric hybrid link | |
| EP1655895B1 (en) | Radio communication method, radio communication terminal accommodating apparatus, and radio communication terminal | |
| George et al. | Bluetooth handover control for roaming system applications | |
| CN105389966A (en) | Personal information collection system and method based on zigbee and wifi combination network | |
| RU2231930C2 (en) | Method for data transfer in hybrid network and hybrid network router |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |