CN110185940A - A kind of monitoring of fuel gas pipeline leakage and positioning system - Google Patents
A kind of monitoring of fuel gas pipeline leakage and positioning system Download PDFInfo
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- CN110185940A CN110185940A CN201910538073.9A CN201910538073A CN110185940A CN 110185940 A CN110185940 A CN 110185940A CN 201910538073 A CN201910538073 A CN 201910538073A CN 110185940 A CN110185940 A CN 110185940A
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- leakage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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Abstract
The invention discloses a kind of monitoring of fuel gas pipeline leakage and positioning systems.The system is made of leakage monitoring subsystem and leakage positioning subsystem two parts.After fuel gas pipeline leakage occurs, leakage monitoring subsystem can send warning message to monitoring platform first, and show the approximate region of leakage；Then testing staff carries out the accurate positioning of leakage point in leakage region using moveable leakage positioning subsystem, and positioning result local real-time display simultaneously uploads monitoring platform.Leakage monitoring subsystem and leakage positioning subsystem share a monitoring platform, may be implemented that the management of detection node, the real-time display of data, leakage alarm, gas leakage range show, leakage point position show and the functions such as automatic short message prompting.The present invention realizes the real-time monitoring and accurate positioning of fuel gas pipeline leakage in such a way that monitoring subsystem and positioning subsystem combine, and has many advantages, such as that easy for installation, coverage distance is remote, real-time performance is good, registration, is suitble to promote and apply.
Description
Technical field
The present invention relates to gas pipelines to monitor field, specifically a kind of fuel gas pipeline leakage monitoring and positioning system.
Background technique
Fuel gas transportation pipeline can inevitably have some defects during manufacturing, can be because defeated after long-time use
It supplies gas in the environment excessively high and in corrosion of temperature of body, eventually leads to the generation of the damaged leakage accident of pipeline, cause to be difficult to hold
The economic loss and energy loss received, or even threaten to the life security of personnel, the buried underground of gas pipeline is sent out in time
It now leaks and determines that the position of leakage point becomes the matter of utmost importance after leaking.Therefore, research city gas pipeline leakage event
Hinder real time diagnosis technology, find leakage accident rapidly and be accurately positioned, adopts an effective measure in time, guarantee pipeline network of fuel gas in city
Safe operation is very important.
Traditional gas leakage detection mostly uses negative pressure wave method greatly at present, using pipeline transient model, using flow alarm function,
The traditional alert of pressure positioning and flow and pressure comprehensive analysis, positioning, are passed by pressure sensor, sonic sensor etc.
Sensor monitors gas leakage situation, and this kind of market form is single, not high with the combination degree of Internet of Things.
Existing gas leakage detection localization method is mainly some indirect detection positioning, including leak detection cable
Method, flow equilibrium method, negative pressure wave method etc..Leak detection cable method is that the height sensitive to fuel gas is applied in gas pipeline outer wall
For polymers cable to leak detection, the shortcoming of this method is cannot to detect slow leakage, and cost is too high.Flow is flat
Weighing apparatus method be by detection gas pipeline entrance and exit flow, then according to input, output flow balance whether
Whether judging pipeline gas leakage, principle is simple, easy to carry out, but cannot achieve the positioning of leakage point.Gas pipeline is let out
Leak detection cross-correlation method is to carry out leak point positioning using secondary correlation time-delay estimate method principle, i.e., by a certain determining long
Two shockwave sensor devices are installed in the pipeline two ends of degree, the time difference that two sensors receive stress wave are calculated, to determine
Position leakage point, but it is larger for smaller leakage or the leakage having occurred and that, position error.These traditional detection positioning sides
All there is respective insufficient and limitation place in method so that the detection positioning of fuel gas pipeline leakage it is not prompt enough with it is accurate, to examining
The personnel of repairing bring great inconvenience.
This system proposes a kind of fuel gas pipeline leakage based on sensor array time sound source location algorithm.The location algorithm
The infrasound signal that leakage point generates is detected using the sensor of three arrays, utilizes the meta position of detection node and leakage point
The geometrical relationship set, positions leakage point, greatly improves the positioning accuracy of leakage point.
This system is combined using LoRa and NB-IOT wireless communication technique, constructs fuel gas pipeline leakage monitoring and positioning
The network system.Both wireless communication techniques be all low-power consumption wan technology (Low-PowerWide-Area Network,
LPWAN Typical Representative) has the characteristics that wide coverage, low in energy consumption and at low cost, is highly suitable for answering in Monitoring Pinpelines
With.LPWAN technology is as aiming at Internet of Things application and the wireless communication technique that designs, with traditional WiFi, ZigBee, bluetooth etc.
Wireless communication technique is compared, and has many advantages, such as that low-power consumption, low bandwidth, low cost, remote, network capacity is big, is suitable for battery
The internet of things equipment that the remote of power supply, small data quantity are sent.
LoRa technology be it is a kind of can both transmit at a distance, distance can reach thousands of rice, but can with low-power consumption, multinode
A kind of novel Internet of Things radio modem communication technology.With covering, wide, low in energy consumption, capacity is big, immunity characteristic is strong, number for it
The advantages that according to more reliable, support ranging and positioning is transmitted.
Based on one important point that cellular narrowband Internet of Things (NB-IOT) is low-power consumption wide area network (LPWAN) network
Branch is the important component for realizing all things on earth internet.Covering is wide, connection is more, rate is low, at low cost, function with it by NB-IOT
It consumes the features such as low, framework is excellent and provides suitable solution for various Internet of things system.
Summary of the invention
The object of the present invention is to provide a kind of low-power consumption, high reliablity, registration, can long-range real time inspection fuel gas conduit
Road leakage monitoring and positioning system；The system is communicated using advanced low power consumption control chip, high-precision sensor, low-consumption wireless
Network is positioned using sensor array to time sound source is leaked, and can solve the network structure of current fuel gas pipeline leakage monitoring
Build problem uneconomical, not convenient, that positioning is inaccurate.
The present invention realizes that goal of the invention adopts the following technical scheme that
A kind of monitoring of fuel gas pipeline leakage and positioning system, by leakage monitoring subsystem and leakage positioning subsystem two parts
It constitutes, it can be achieved that gas leakage Zone Alerts, and leakage point is accurately positioned on the basis of Zone Alerts.This system benefit
With the NB-IOT technology and LoRa technology of newest LPWAN (low-power consumption wide area network), bottom data is real-time transmitted to cloud and is put down
Platform has the advantages that at low cost, networking is convenient and efficient, real time leak is alarmed, leak point positioning is accurate.
Leakage monitoring subsystem of the present invention, is mainly made of sensing layer, network layer, application layer.
Sensing layer of the present invention is characterized in that: being mainly made of detection node, detection node is mainly sensed by combustion gas
Device MQ5, STM32F103C8T6 processor, LoRa wireless communication module SX1278 and power module composition, in Near Pipelines difference
Location settings sensor, and each sensor position is fixed, and be would know that gas leakage information by sensor, is realized gas leakage
Detection and leakage region locking.
Network layer of the present invention is characterized in that: being mainly made of aggregation node, is passed through the LoRa and NB-IOT of establishment
The network system combined is transferred to aggregation node using the data that LoRa technology will test node, will using NB-IOT technology
Aggregation node is uploaded to monitoring platform, completes the convergence and upload of detection node data.Aggregation node mainly include control chip,
LoRa wireless communication module, NB-IOT wireless communication module and power module.Wherein control chip uses STM32F103C8T6,
LoRa wireless communication module uses SX1278, and NB-IOT wireless communication module uses NB101.
Application layer of the present invention is characterized in that: mainly monitoring management platform provides interactive interface for user, solves
The problem of each sensing point quickly networking, quick connection, is, it can be achieved that the reliable transmission of data and the pipe of intelligence convergence, detection node
Reason, the real-time display of data, leakage alarm, gas leakage range are shown, leakage point position is shown, data query and automatically it is short
The functions such as letter prompting
Leakage positioning subsystem of the present invention is characterized in that: being saved by moveable infrasonic sensor array and convergence
Point is constituted.Sensor array is made of three sensor nodes, each node by infrasonic sensor, STM32F103C8T6,
LoRa module composition, infrasound signal when for acquiring leakage, and denoising is carried out, remittance is then uploaded to by LoRa module
Poly- node；Aggregation node is mainly made of STM32F103C8T6 processor, LoRa module, NB-IOT module, display circuit, real
The convergence processing of existing sensor array data, and leak position is carried out, finally positioning result is locally displayed, and upload monitoring
Platform.
Leakage positioning subsystem of the present invention is characterized in that: infrasonic sound wave property when using leakage is positioned,
Source of leaks is disposed about the infrasound signal that sensor array acquires same secondary sound source, is reached according to same secondary sound source each in array
The point time is different, finds out the signal arrival time difference (time delay) between each point, further according between each point and secondary sound source on position
Geometrical relationship come realize positioning.
Compared with the prior art, the present invention has the following beneficial effects:
(1) easy for installation
Leakage monitoring subsystem installation of the invention is extremely convenient, as long as product is loaded onto battery, will test node placement
In Near Pipelines, a distance places a detection node, and then a certain range arranges that an aggregation node can start work again
Make.
(2) networking is convenient
System uses two kinds of low-power consumption wide area wireless communication network technologies of LoRa and NB-IOT, and monitoring node and aggregation node are opened
After machine can automatic network-building, if monitoring node does not network, can periodicity sending networking data packet, until networking success.
(3) easy to use
User can Telnet Internet of Things monitoring platform, real-time query pipe leakage information, warning message is in addition in platform
Display is outer, is also sent using short message mode, easy to use.
(4) low in energy consumption highly reliable
The main control chip of monitoring node and aggregation node is all made of the low-power microprocessor of strong interference immunity
STM32F103C8T6, wireless communication chips are also low-power consumption module.
(5) registration
Leakage locator is using the infrasonic sound wave property that generates when leakage, using between detection node and leakage point on position
Geometrical relationship positions leakage point, greatly improves the positioning accuracy of leakage point.
Detailed description of the invention
A kind of Fig. 1 are as follows: overall construction drawing of fuel gas pipeline leakage monitoring and positioning system.
A kind of Fig. 2 are as follows: leakage monitoring subsystem composition block diagram of fuel gas pipeline leakage monitoring and positioning system.
A kind of Fig. 3 are as follows: leakage positioning subsystem composition block diagram of fuel gas pipeline leakage monitoring and positioning system.
A kind of Fig. 4 are as follows: location algorithm schematic diagram of fuel gas pipeline leakage monitoring and positioning system.
A kind of Fig. 5 are as follows: monitoring platform functional diagram of fuel gas pipeline leakage monitoring and positioning system.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.
Three parts of implementation of the present invention point:
(1) leakage monitoring subsystem scheme
Detection node of the invention is numerous, is arranged near gas pipeline, and a distance arranges one, for monitoring combustion gas
Leakage situation.Detection node wirelessly communicates core by STM32F103C8T6 main control chip, MQ5 gas security, SX1278 LoRa
Piece and power circuit composition.Product design appearance can be varied, for example is designed to rounded cap type, drape over one's shoulders outside copper cap as LoRa without
The antenna of line communication module.Detection node is powered using 9V rectangular cell, is depressurized to 3.3V supply single-chip microcontroller work through power circuit
Make.Monitoring node Auto Power On after loading battery, transmission group network data is received to aggregation node, aggregation node after the completion of initialization
To after the networking data packet of monitoring node, downlink aggregation node device address and monitoring node networking serial number to monitor,
It is automatically performed matching networking process.
Leakage monitoring subsystem aggregation node of the invention controls chip, SX1278 LoRa using STM32F103C8T6
Wireless communication module and NB101 NB-IOT wireless communication module and power module realize what LoRa and NB-IOT GSM was combined
The network system.An aggregation node is arranged in gas pipeline a certain range, aggregation node needs to be inserted into NB-IOT special SIM
Card, opening initialization search net automatically after the completion and network, and receive the data packet that monitoring node is sent by LoRa wireless communication module,
Networking is completed between monitoring node, receives the information of monitoring node transmission, and combustion is uploaded to by NB-IOT wireless communication module
Feed channel monitoring platform.
(2) positioning subsystem scheme is leaked
Leakage positioning subsystem of the present invention is used on the basis of monitoring subsystem alarm.In the area of alarm
Arrangement leakage positioning subsystem, is arranged to triangle battle array for 2 meters of three sensor distances or so that leak positioning subsystem in domain
Column arrange aggregation node apart from 4 meters of triangular array central point or so.
Leakage monitoring subsystem sensor array of the invention by STM32F103C8T6 main control chip, infrasonic sensor,
SX1278 LoRa wireless communication chips and power circuit composition.It is powered using 9V rectangular cell, is depressurized to 3.3V through power circuit
Supply single-chip microcontroller work.Leakage monitoring subsystem aggregation node of the invention, using STM32F103C8T6 control chip,
SX1278 LoRa wireless communication module, NB101 NB-IOT wireless communication module, power module and display circuit realize sensing
The convergence processing of device array data, and leak position is carried out, finally positioning result is locally displayed, and upload monitoring platform.
(3) gas pipeline monitoring platform scheme
Gas pipeline monitoring platform constructs on China Mobile Internet of Things open platform One-Net, by aggregation node data
Information accesses One-Net by NB-IOT module, realizes that networking remotely monitors, and One-Net platform realizes data forwarding and storage,
To realize the long-range monitoring Internet of Things framework being made of monitoring client-cloud platform-monitoring node.
Entire data upload process including the following steps:
1) product is created.The product of creation registration oneself, has a data to upload center in cloud platform.
2) equipment is registered.Typically refer to the product of live RTU access, but actually data are from oneself local service
Device upload is past, and the data upload program being equivalent on local server serves as virtual product, toward cloud platform propelling data.
3) data upload software part.It has selected the SOCKET in C++ to communicate, the data of http protocol is sent to cloud platform
Upload message.
Gas pipeline monitoring platform provides human-computer interaction interface for user, to solve each sensing point quickly networking, quick
The problem of victory connection, the function of realizing the reliable transmission of data and intelligently converge.Grid platform may be implemented combustion gas and let out
The leakage monitoring management of system detection node, the real-time display of data, gas leakage range show, leakage alarm, data query and
Automatic short message prompting function,
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (5)
1. a kind of fuel gas pipeline leakage monitoring and positioning system, it is characterised in that: mainly fixed by leakage monitoring subsystem and leakage
Sub-systems two parts are constituted.After fuel gas pipeline leakage occurs, leakage monitoring subsystem can send to monitoring platform and alarm first
Information, and show the approximate region of leakage；Then testing staff utilizes moveable leakage positioning subsystem in leakage region
The accurate positioning of leakage point is carried out, positioning result local real-time display simultaneously uploads monitoring platform.
2. a kind of fuel gas pipeline leakage monitoring according to claim 1 and positioning system, it is characterised in that: the combustion gas
Leakage monitoring subsystem is made of detection node and aggregation node.Detection node is mainly by gas security, STM32F103C8T6
Processor and LoRa module composition, are mounted near gas pipeline, realize the detection of gas leakage, and data are uploaded to convergence
Node；Aggregation node is mainly made of STM32F103C8T6 processor, LoRa module and NB-IOT module, realizes detection node
The convergence of data, and data are uploaded to by monitoring platform by NB-IOT network.
3. according to claim 1 a kind of based on fuel gas pipeline leakage monitoring and positioning system, it is characterised in that: described
Gas leakage positioning subsystem is made of moveable sensor array and aggregation node, infrasonic sound wave property when using leakage,
It is accurately positioned to time sound source is leaked.Sensor array is made of three sensor nodes, and each node is sensed by infrasound
Device, STM32F103C8T6, LoRa module composition for acquiring infrasound signal when leakage, and carry out denoising, then
Aggregation node is uploaded to by LoRa module；Aggregation node is mainly by STM32F103C8T6 processor, LoRa module, NB-IOT
Module and display circuit are constituted, and realize the convergence processing of sensor array data, leak position are carried out, finally by positioning result
It is locally displayed, and uploads monitoring platform.
4. according to claim 1 a kind of based on fuel gas pipeline leakage monitoring and positioning system, it is characterised in that: described
Monitoring platform is that leakage monitoring subsystem and leakage positioning subsystem share, and monitoring platform realizes the reception of data, and is user
Interactive interface is provided, it can be achieved that the management of detection node, the real-time display of data, leakage alarm, gas leakage range show, let out
The functions such as leak source position is shown, data query and automatic short message are reminded.
5. according to claim 1 a kind of based on fuel gas pipeline leakage monitoring and positioning system, it is characterised in that: described
Cordless communication network system includes two kinds of low-power consumption wide area network wireless communication techniques of LoRa and NB-IOT, which utilizes
LoRa technology realizes the data transmission and convergence of monitoring node, and the upload of aggregation node data is realized using NB-IOT technology.This
Real-time data transmission can be realized in the kind network system, and cost-saved, and networking is convenient and efficient.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538073.9A CN110185940A (en) | 2019-06-20 | 2019-06-20 | A kind of monitoring of fuel gas pipeline leakage and positioning system |
| CN201910904871.9A CN110617405A (en) | 2019-06-20 | 2019-09-24 | Gas pipeline leakage monitoring and positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538073.9A CN110185940A (en) | 2019-06-20 | 2019-06-20 | A kind of monitoring of fuel gas pipeline leakage and positioning system |
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| Publication Number | Publication Date |
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| CN110185940A true CN110185940A (en) | 2019-08-30 |
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| CN201910538073.9A Withdrawn CN110185940A (en) | 2019-06-20 | 2019-06-20 | A kind of monitoring of fuel gas pipeline leakage and positioning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535972A (en) * | 2019-09-17 | 2019-12-03 | 山东电子职业技术学院 | A kind of the coal gas detection equipment centralized management and communication system, equipment and readable storage medium storing program for executing of hardware and software platform |
| CN110529747A (en) * | 2019-09-23 | 2019-12-03 | 安徽理工大学 | Steel gas pipe underground leak point positioning system |
| CN113780973A (en) * | 2021-08-04 | 2021-12-10 | 广州云硕科技发展有限公司 | Intelligent management method and system for improving park safety |
| CN115879913A (en) * | 2023-02-13 | 2023-03-31 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipe network maintenance material prediction method, internet of things system and medium |
-
2019
- 2019-06-20 CN CN201910538073.9A patent/CN110185940A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535972A (en) * | 2019-09-17 | 2019-12-03 | 山东电子职业技术学院 | A kind of the coal gas detection equipment centralized management and communication system, equipment and readable storage medium storing program for executing of hardware and software platform |
| CN110535972B (en) * | 2019-09-17 | 2022-02-08 | 齐鲁师范学院 | Centralized control and communication system, equipment and readable storage medium for platform gas detection equipment |
| CN110529747A (en) * | 2019-09-23 | 2019-12-03 | 安徽理工大学 | Steel gas pipe underground leak point positioning system |
| CN113780973A (en) * | 2021-08-04 | 2021-12-10 | 广州云硕科技发展有限公司 | Intelligent management method and system for improving park safety |
| CN113780973B (en) * | 2021-08-04 | 2022-08-02 | 广州云硕科技发展有限公司 | Intelligent management method and system for improving park safety |
| CN115879913A (en) * | 2023-02-13 | 2023-03-31 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipe network maintenance material prediction method, internet of things system and medium |
| CN115879913B (en) * | 2023-02-13 | 2023-05-05 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipe network maintenance material prediction method, internet of things system and medium |
| US11966885B2 (en) | 2023-02-13 | 2024-04-23 | Chengdu Qinchuan Iot Technology Co., Ltd. | Methods and Internet of Things (IoT) systems for predicting maintenance materials of smart gas pipeline networks |
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Application publication date: 20190830 |
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