CN208170009U - A kind of buried natural gas line security protection early warning system - Google Patents
A kind of buried natural gas line security protection early warning system Download PDFInfo
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- CN208170009U CN208170009U CN201820650023.0U CN201820650023U CN208170009U CN 208170009 U CN208170009 U CN 208170009U CN 201820650023 U CN201820650023 U CN 201820650023U CN 208170009 U CN208170009 U CN 208170009U
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Abstract
The utility model discloses a kind of buried natural gas line security protection early warning systems, the system includes central processing unit, fiber sensing module, environmental data collecting module, pipeline image processing module, memory, alarm modules, power module, wireless communication module and monitor terminal, the utility model passes through fiber sensing module real-time detection conduit running state, and pipeline ambient data is acquired by environmental data collecting module, when there is natural gas leakage and burst vibration, pipeline exception information can be detected in fiber sensing module, and the position where pipeline abnormal point, pipeline abnormal point and environmental data are marked on pipeline image by pipeline image processing module, the pipeline image information after warning information and label is sent monitor terminal by simultaneity factor, to realize the on-line monitoring and safety precaution function of pipeline.
Description
Technical field
The utility model relates to natural gas line monitoring technical field, more particularly to a kind of buried natural gas tube
Road security protection early warning system.
Background technique
Currently, with the development of economy, the demand of natural gas increases increasingly, the transport of natural gas mainly passes through long defeated pipe
Road realize, due to long neglected and in disrepair, corrosion, wear and accidental injury etc. caused by pipeline leakage event occur again and again, no
Huge economic loss is only caused, and seriously pollutes environment, endangers the health of the mankind, in order to monitor pipeline situation,
Natural gas line leak detection early warning technology comes into being, and existing pipeline leak detection technology mainly has ultrasonic detection technology, leakage field inspection
Survey technology, eddy detection technology, infrasound law technology and negative pressure wave method technology, mainly to parameters such as pipeline pressure and gas concentrations
It measures, testing result can be obtained by the analyses and comparison to pipeline relevant parameter.
But existing Monitoring Pinpelines technology is the unidirectional measurement to pipe parameter, due to the environment of buried pipeline
Simultaneously on-line monitoring and warning function is not implemented in particularity, detection to pipeline, to pipe monitoring system specifications higher
Side, above-mentioned Monitoring Pinpelines technology are simultaneously not suitable for.
Therefore, how a kind of achievable natural gas line security protection early warning system for monitoring simultaneously energy early warning in time on-line is provided
The problem of system is those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, the present invention provides a kind of achievable on-line monitoring and the buried natural gas tubes of energy early warning in time
Road security protection early warning system.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of buried natural gas line security protection early warning system, the system include：
Fiber sensing module, the whether abnormal simultaneously targeted duct abnormal point place of the fiber sensing module real-time detection pipeline
Position obtains pipeline abnormal point information；
Environmental data collecting module, the environmental data collecting module acquire the environmental data letter in pipeline ambient enviroment
Breath；
Pipeline image processing module, the pipeline image processing module receive the pipeline abnormal point information and the environment
Data information, and in pre-rendered pipeline image subscript note pipeline the abnormity point position and environmental data information, obtain abnormal pipe
Road image information；
Central processing unit, the fiber sensing module, environmental data collecting module and pipeline image processing module are and institute
Central processing unit connection is stated, the central processing unit is to the pipeline abnormal point information, environmental data information and abnormal piping drawing
As information is handled, and the environmental data information is compared with preset respective threshold information, judges environmental data
It is whether abnormal；
Memory, the central processing unit are connect with the memory, and the memory stores pipeline abnormal point information, ring
Border data information and abnormal pipeline image information；
Alarm modules, the central processing unit are connect with the alarm modules, and pipeline exception are occurring in the alarm modules
It sends a warning when point or environmental data exception；
Power module, the power module are whole system power supply；
Wireless communication module, the central processing unit are connect with the wireless communication module, and the wireless communication module connects
Receive the abnormal pipeline image information and warning information；With
Monitor terminal, the wireless communication module and the monitor terminal communicate to connect, and the monitor terminal will be described different
Chang Guandao image information is shown, and is responded to warning information.
The utility model has the beneficial effects that：By fiber sensing module real-time detection conduit running state, and pass through ring
Border data collecting module collected pipeline environmental data, when there is natural gas leakage and burst vibration, fiber sensing module
Pipeline exception information and the position where pipeline abnormal point can be detected, by pipeline image processing module by pipeline abnormal point
With environmental data label on pipeline image, simultaneity factor sends the pipeline image information after warning information and label to remotely
Monitor terminal, to realize the on-line monitoring and safe early warning of pipeline.
Further, the environmental data information includes environment temperature, concentration of natural gas and micro-vibration information, passes through pipeline week
The domestic temperature of collarette, concentration of natural gas and micro-vibration information judge whether pipeline is in a safe condition.
Further, the pipeline image processing module includes pipeline image preset unit, abnormal pipeline marking unit, environment
Data markers unit and image composing unit, the pipeline image preset unit and the abnormal pipeline marking unit and environment number
It is connected according to marking unit, the pipeline image preset unit is stored with pre-rendered good pipeline image, the exception pipeline mark
Remember that unit remembers pipeline the abnormity point position in pipeline image subscript according to the pipeline abnormal point information, the environmental data label is single
Member remembers environmental data, the exception pipeline marking unit and environmental data in pipeline image subscript according to the environmental data information
Marking unit is connect with described image synthesis unit, and described image synthesis unit is by the pipeline abnormal point of pipeline image and label
Position and the integration of environmental data information generate abnormal pipeline image information, and described image synthesis unit and the central processing unit connect
It connects.
Beneficial effect using above-mentioned further scheme is：By pipeline abnormal point and pipeline environmental data label pre-
It first draws on pipeline image, can clearly show that pipeline conditions information, the staff of monitor terminal is facilitated clearly to look into
It sees pipeline conditions, keeps system more humanized.
Further, the fiber sensing module includes optical pulse generator, optoisolator, backwards to astigmatism detection unit, light
Fine coupler, photoelectric conversion unit, amplification filter unit and analog-digital converter,
The optical pulse generator is connect with the optoisolator, and the optical pulse generator issues light pulse signal, institute
State the light pulse signal and backscattering optical signal isolation that optoisolator issues the optical pulse generator, the optoisolator
It is connect with the fiber coupler by optical fiber with described backwards to astigmatism detection unit, it is described to be used for backwards to astigmatism detection unit
The backscattering optical signal of each point in detection fiber, the light pulse that the fiber coupler issues the optical pulse generator are believed
Number and backscattering optical signal combining, obtain optical signal all the way, the fiber coupler is connect with the photoelectric conversion unit, institute
It states photoelectric conversion unit and converts optical signals into electric signal, the photoelectric conversion unit is electrically connected with the amplification filter unit,
The amplification filter unit, which amplifies electric signal, to be filtered and is inhibited to be handed over to the DC component in electric signal
Galvanic electricity signal, the amplification filter unit are electrically connected with the analog-digital converter, and the analog-digital converter turns ac signal
Change DC signal into, the analog-digital converter is electrically connected with the central processing unit.
Beneficial effect using above-mentioned further scheme is：The light pulse signal that optical pulse generator issues passes in a fiber
When defeated, due to the irregularities of optical fiber, light pulse signal will appear scattering phenomenon on optical fiber, and back-scattering light therein returns
To incidence end, enter through fiber coupler backwards to astigmatism detection unit, and dissipating backwards for incidence end will be emitted back towards by optoisolator
It penetrates light and is isolated with the incident optical signal that optical pulse generator issues, prevent back-scattering light from entering incidence end, pass through measurement
Back-scattering light changes with time the loss characteristics that can be obtained on optical fiber at different location, passes through the survey to back-scattering light
Amount can obtain the static state of each point and the dynamic loss of lower frequency on optical fiber, and complete positioning function.When conveyance conduit occurs
When leakage, leaking out gas makes environment temperature change, while can also apply active force to neighbouring optical fiber, makes optical fiber
Bending and shake, cause radiation mode to change, when Near Pipelines have mechanical execution or artificial destruction, can also apply to optical fiber
Active force makes the loss of optical fiber and Output optical power change, using this characteristic, by filtering to photoelectric conversion, amplification
It is analyzed with the electric signal of the output light after analog-to-digital conversion, determines whether conveyance conduit has the generation of the events such as leakage, passed through
The measurement of back-scattering light is positioned.To realize the accurate positionin of pipeline abnormal point.
Further, the optical fiber is distributed armouring tension resistance type optical fiber.
Further, the optical fiber is laid with along natural gas line extending direction, the paving location and natural gas of the optical fiber
The distance of the tube wall of gas pipeline is 0.3m-0.9m.
Beneficial effect using above-mentioned further scheme is：Since optical fiber is played during pipeline state inspection to pass weight
The effect wanted, fiber selection distribution armouring tension resistance type optical fiber in the system of the utility model, survivability is stronger,
Be hardly damaged, service life is higher, and guarantee optical fiber paving location at a distance from the tube wall of the natural gas pipeline
In a certain range, it is ensured that the precision of measurement improves the measurement accuracy and reliability of system.
Further, the monitor terminal includes to the dimension nearest away from pipeline abnormal point to the mode that warning information responds
Shield station sends request maintenance information, and sends what cutting natural gas exported to the gas transmission station of pipeline section where control pipeline abnormal point
Information.
Further, the photoelectric conversion unit includes photodiode D, operational amplifier U1, resistance R1 and resistance R2, institute
The anode for stating photodiode D connects-Vb, the inverting input terminal of the cathode of the photodiode D and the operational amplifier U1
Connection, the one end resistance R2 ground connection, the other end are connect with the non-inverting input terminal of the operational amplifier U1, the resistance R1
One end is connect with the inverting input terminal of the operational amplifier U1, and the output end of the other end and the operational amplifier U1 connect
It connects, the output end of the operational amplifier U1 is also connect with the amplification filter unit.
Further, the amplification filter unit include operational amplifier U2, operational amplifier U3, potentiometer Rw, capacitor C,
Resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8, the one end the resistance R3 and the operational amplifier U1's
Output end connection, the other end connect with the inverting input terminal of the operational amplifier U2, the sliding end of the potentiometer Rw and
The non-inverting input terminal of the operational amplifier U2 connects, and the other both ends of the potentiometer Rw meet positive pole+VCC respectively and bear
The parallel circuit one of pole-VCC, the resistance R4 and capacitor C composition terminates the inverting input terminal of the operational amplifier U2, another
The output end of the one termination operational amplifier U2, the resistance R6 is by the output end of the operational amplifier U2 and the operation
The inverting input terminal of amplifier U3 connects, the one end resistance R7 ground connection, the same phase of another termination operational amplifier U3
Input terminal, the one end the resistance R8 are connect with the inverting input terminal of the operational amplifier U3, the other end and operational amplifier
The output end of U3 connects, output signal V0, the output end of operational amplifier U3 connect with analog-digital converter.
Beneficial effect using above-mentioned further scheme is：Fiber coupler is coupled into the light come by photodiode D to be believed
Number it is converted into current signal, passes through the Current Voltage of operational amplifier U1 and resistance R1 and resistance the R2 composition of high-performance low-noise
Photo-signal is converted into voltage signal by conversion circuit, and resistance R4 and capacitor C form low-pass filter circuit, can filter out letter
High-frequency noise in number, while the non-inverting input terminal of operational amplifier U2 adds a DC offset voltage as common-mode signal, make by
The circuit that operational amplifier U2, potentiometer Rw, resistance R5 are formed inhibits the DC component in voltage signal, to exchange point
Amount amplifies, to obtain ac signal, the amplification which forms through operational amplifier U3, resistance R7 and resistance R8 is electric
Road obtains output signal V after amplifying again0, output signal V0It can access monolithic after analog-digital converter is converted into DC signal
In machine.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of structural block diagram of buried natural gas line security protection early warning system provided by the utility model；
Fig. 2 is pipeline image procossing in a kind of buried natural gas line security protection early warning system provided by the utility model
The structural block diagram of module；
Fig. 3 is fiber sensing module in a kind of buried natural gas line security protection early warning system provided by the utility model
Structural block diagram；
Fig. 4 is photoelectric conversion unit in a kind of buried natural gas line security protection early warning system provided by the utility model
With the circuit diagram of amplification filter unit.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to attached drawing 1, present embodiment discloses a kind of buried natural gas line security protection early warning system, the system packets
It includes：
Fiber sensing module 1,1 real-time detection pipeline exception information of fiber sensing module and targeted duct abnormal point institute are in place
It sets, obtains abnormal duct size information；
Environmental data collecting module 2, environmental data collecting module 2 acquire the environmental data information in pipeline ambient enviroment；
Pipeline image processing module 3,3 receiving pipeline abnormal point information of pipeline image processing module and environmental data information,
And in pre-rendered pipeline image subscript note pipeline the abnormity point position and environmental data information, abnormal pipeline image letter is obtained
Breath；
Central processing unit 4, fiber sensing module 1, environmental data collecting module 2 and pipeline image processing module 3 are in
Central processor 4 connects, and central processing unit 4 carries out pipeline abnormal point information, environmental data information and abnormal pipeline image information
Processing, and environmental data information is compared with preset respective threshold information, judge whether environmental data is abnormal；
Memory 7, central processing unit 4 are connect with memory 7, and memory 7 stores abnormal duct size information, environmental data information
And abnormal pipeline image information；
Alarm modules 9, central processing unit 4 are connect with alarm modules 9, and pipeline abnormal point or environment are occurring in alarm modules 9
It sends a warning when data exception；
Power module 5, central processing unit 4 are connect with power module 5, and power module 5 is whole system power supply；
Wireless communication module 6, central processing unit 4 are connect with wireless communication module 6, and wireless communication module 6 receives abnormal pipe
Road image information and warning information；
Monitor terminal 8, wireless communication module 6 and monitor terminal 8 communicate to connect, monitor terminal 8 by pipeline image information into
Row display, and warning information is responded.
Central processing unit 4 by thereon corresponding I/O mouthfuls respectively with fiber sensing module 1, environmental data collecting module 2,
Pipeline image processing module 3, memory 7, alarm modules 9, power module 5, wireless communication module 6 connect.
Specifically, the environmental data information in the present embodiment includes temperature, concentration of natural gas and micro-vibration information.
Referring to attached drawing 2, pipeline image processing module 3 include pipeline image preset unit 31, abnormal pipeline marking unit 32,
Environmental data marking unit 33 and image composing unit 34, pipeline image preset unit 31 and abnormal pipeline marking unit 32 and ring
Border data markers unit 33 connects, and pipeline image preset unit 31 is stored with pre-rendered good pipeline image, abnormal pipeline mark
Note unit 32 and environmental data marking unit 33 are connect with image composing unit 34, image composing unit 34 and central processing unit
4 connections.
Referring to attached drawing 3, fiber sensing module 1 includes optical pulse generator 12, optoisolator 13, backwards to astigmatism detection unit
11, fiber coupler 14, photoelectric conversion unit 15, amplification filter unit 16 and analog-digital converter 17, optical pulse generator 12 with
Optoisolator 13 connects, and optoisolator 13 and connect with fiber coupler 14 by optical fiber backwards to astigmatism detection unit 11, back
Back-scattering light to astigmatism detection unit 11 for each point in detection fiber, fiber coupler 14 and photoelectric conversion unit 15 are logical
Optical fiber connection is crossed, photoelectric conversion unit 15 is electrically connected with amplification filter unit 16, amplification filter unit 16 and analog-digital converter 17
Electrical connection, analog-digital converter 17 are electrically connected with central processing unit 4.
Specifically, the optical fiber in the present embodiment is distributed armouring tension resistance type optical fiber.
Specifically, the paving location of optical fiber is 0.3m-0.9m, the present embodiment at a distance from the tube wall of natural gas pipeline
In the paving location of optical fiber at a distance from the tube wall of natural gas pipeline be 0.5m.
Specifically, monitor terminal 8 includes to the maintenance nearest away from pipeline abnormal point to the mode that warning information responds
Information is safeguarded in transmission request of standing, and the letter of cutting natural gas output is sent to the gas transmission station of pipeline section where control pipeline abnormal point
Breath.
Referring to attached drawing 4, in the present embodiment photoelectric conversion unit include photodiode D, operational amplifier U1, resistance R1 and
Resistance R2, the anode of photodiode D meet-Vb, and the cathode of photodiode D and the inverting input terminal of operational amplifier U1 connect
It connects, the one end resistance R2 ground connection, the other end is connect with the non-inverting input terminal of operational amplifier U1, the one end resistance R1 and operation amplifier
The inverting input terminal of device U1 connects, and the other end is connect with the output end of operational amplifier U1, the output end of operational amplifier U1
Also it is connect with amplification filter unit；
Amplifying filter unit includes operational amplifier U2, operational amplifier U3, potentiometer Rw, capacitor C, resistance R3, resistance
R4, resistance R5, resistance R6, resistance R7 and resistance R8, the one end resistance R3 are connect with the output end of operational amplifier U1, the other end
It is connect with the inverting input terminal of operational amplifier U2, the sliding end of potentiometer Rw and the non-inverting input terminal of operational amplifier U2 connect
It connects, the other both ends of potentiometer Rw connect positive pole+VCC and cathode-VCC, the parallel circuit of resistance R4 and capacitor C composition respectively
The inverting input terminal of the one termination operational amplifier U2, the output end of another termination operational amplifier U2, resistance R6
The output end of operational amplifier U2 is connect with the inverting input terminal of operational amplifier U3, the one end resistance R7 ground connection, the other end
The non-inverting input terminal of operational amplifier U3 is connect, the one end resistance R8 is connect with the inverting input terminal of operational amplifier U3, the other end
It is connect with the output end of operational amplifier U3, output signal V0, the output end of operational amplifier U3 connect with analog-digital converter.
Fiber coupler is coupled into the optical signal come and is converted into current signal by photodiode D, passes through high-performance low noise
The current-to-voltage converting circuit of operational amplifier U1 and resistance R1 and resistance the R2 composition of sound, is converted into voltage for photo-signal
Signal, resistance R4 and capacitor C form low-pass filter circuit, can filter out the high-frequency noise in signal, while operational amplifier U2
Non-inverting input terminal add a DC offset voltage as common-mode signal, make to be made of operational amplifier U2, potentiometer Rw, resistance R5
Circuit the DC component in voltage signal is inhibited, AC compounent is amplified, should to obtain ac signal
The amplifying circuit that signal is formed through operational amplifier U3, resistance R7 and resistance R8 obtains output signal V after amplifying again0, output
Signal V0It can access in single-chip microcontroller after analog-digital converter is converted into DC signal.
In some embodiments, by the analysis of the electric signal to output light, the frequency of Dissipation change on optical fiber can be obtained
The frequency of spectrum signature input optical pulse at this time almost can be unrestricted, thus it can complete optical fiber total losses from low frequency at
Part arrives measurement damage as caused by the leakage of conveyance conduit, the machining of Near Pipelines and artificial destruction of high-frequency components
Consumption has different spectrum signatures, can be used for determining the reason of causing loss and type.
Buried natural gas line security protection early warning system provided in this embodiment passes through fiber sensing module real-time detection
Conduit running state, and pipeline ambient data is acquired by environmental data collecting module, there is natural gas leakage and is dashing forward
When hair vibration, the position where pipeline exception information and pipeline abnormal point is can be detected in fiber sensing module, passes through pipeline image
Processing module is by pipeline abnormal point and environmental data label on pipeline image, and simultaneity factor is by the pipe after warning information and label
Road image information is sent to remote monitoring terminal, to realize the on-line monitoring and safe early warning of pipeline.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of buried natural gas line security protection early warning system, which is characterized in that including：
Fiber sensing module, whether the fiber sensing module real-time detection pipeline is abnormal and targeted duct abnormal point institute is in place
It sets, obtains pipeline abnormal point information；
Environmental data collecting module, the environmental data collecting module acquire the environmental data information in pipeline ambient enviroment；
Pipeline image processing module, the pipeline image processing module receive the pipeline abnormal point information and the environmental data
Information, and in pre-rendered pipeline image subscript note pipeline the abnormity point position and environmental data information, obtain abnormal piping drawing
As information；
Central processing unit, the fiber sensing module, environmental data collecting module and pipeline image processing module with it is described in
Central processor connection, the central processing unit is to the pipeline abnormal point information, environmental data information and abnormal pipeline image letter
Breath is handled, and the environmental data information is compared with preset respective threshold information, whether judges environmental data
It is abnormal；
Memory, the central processing unit are connect with the memory, and the memory stores pipeline abnormal point information, environment number
It is believed that breath and abnormal pipeline image information；
Alarm modules, the central processing unit are connect with the alarm modules, the alarm modules occur pipeline abnormal point or
It sends a warning when environmental data exception；
Power module, the power module are whole system power supply；
Wireless communication module, the central processing unit are connect with the wireless communication module, and the wireless communication module receives institute
State abnormal pipeline image information and warning information；With
Monitor terminal, the wireless communication module and the monitor terminal communicate to connect, and the monitor terminal manages the exception
Road image information is shown, and is responded to warning information.
2. a kind of buried natural gas line security protection early warning system according to claim 1, which is characterized in that the ring
Border data information includes environment temperature, concentration of natural gas and micro-vibration information.
3. a kind of buried natural gas line security protection early warning system according to claim 1, which is characterized in that the pipe
Road image processing module includes that pipeline image preset unit, abnormal pipeline marking unit, environmental data marking unit and image close
At unit,
The pipeline image preset unit is connect with the abnormal pipeline marking unit and environmental data marking unit, the pipeline
Image preset unit is stored with pre-rendered good pipeline image, and the exception pipeline marking unit is according to the pipeline abnormal point
Information remembers that pipeline the abnormity point position, the environmental data marking unit exist according to the environmental data information in pipeline image subscript
Pipeline image subscript remembers environmental data, and the exception pipeline marking unit and environmental data marking unit are synthesized with described image
The pipeline the abnormity point position and environmental data information of pipeline image and label are integrated and are given birth to by unit connection, described image synthesis unit
At abnormal pipeline image information, described image synthesis unit is connect with the central processing unit.
4. a kind of buried natural gas line security protection early warning system according to claim 1, which is characterized in that the light
Fine sensing module include optical pulse generator, optoisolator, backwards to astigmatism detection unit, fiber coupler, photoelectric conversion unit,
Amplify filter unit and analog-digital converter,
The optical pulse generator is connect with the optoisolator, and the optical pulse generator issues light pulse signal, the light
The light pulse signal and backscattering optical signal isolation, the optoisolator and institute that isolator issues the optical pulse generator
It states and is connect with the fiber coupler by optical fiber backwards to astigmatism detection unit, it is described to be used to detect backwards to astigmatism detection unit
The backscattering optical signal of each point on optical fiber, light pulse signal that the fiber coupler issues the optical pulse generator and
The combining of backscattering optical signal, obtains optical signal all the way, the fiber coupler is connect with the photoelectric conversion unit, the light
Electric converting unit converts optical signals into electric signal, and the photoelectric conversion unit is electrically connected with the amplification filter unit, described
Electric signal is amplified and is filtered and is inhibited to obtain alternating current to the DC component in electric signal by amplification filter unit
Signal, the amplification filter unit are electrically connected with the analog-digital converter, and ac signal is converted by the analog-digital converter
DC signal, the analog-digital converter are electrically connected with the central processing unit.
5. a kind of buried natural gas line security protection early warning system according to claim 4, which is characterized in that the light
Fibre is distributed armouring tension resistance type optical fiber.
6. a kind of buried natural gas line security protection early warning system according to claim 4, which is characterized in that the light
Fibre is laid with along natural gas line extending direction, and the paving location of the optical fiber is 0.3m- at a distance from natural gas pipeline
0.9m。
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| CN201820650023.0U CN208170009U (en) | 2018-04-27 | 2018-04-27 | A kind of buried natural gas line security protection early warning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426173A (en) * | 2018-04-27 | 2018-08-21 | 钦州学院 | A kind of buried natural gas line security protection early warning system |
| CN110886970A (en) * | 2019-11-26 | 2020-03-17 | 北部湾大学 | Safety protection early warning system and method for buried natural gas pipeline |
| CN114363499A (en) * | 2022-03-21 | 2022-04-15 | 深圳百胜扬工业电子商务平台发展有限公司 | Image processing method and device, computer equipment and storage medium |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426173A (en) * | 2018-04-27 | 2018-08-21 | 钦州学院 | A kind of buried natural gas line security protection early warning system |
| CN110886970A (en) * | 2019-11-26 | 2020-03-17 | 北部湾大学 | Safety protection early warning system and method for buried natural gas pipeline |
| CN114363499A (en) * | 2022-03-21 | 2022-04-15 | 深圳百胜扬工业电子商务平台发展有限公司 | Image processing method and device, computer equipment and storage medium |
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