CN205670380U - A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring - Google Patents
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring Download PDFInfo
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- CN205670380U CN205670380U CN201620586230.5U CN201620586230U CN205670380U CN 205670380 U CN205670380 U CN 205670380U CN 201620586230 U CN201620586230 U CN 201620586230U CN 205670380 U CN205670380 U CN 205670380U
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Abstract
This utility model relates to a kind of magnetic induction wave guide communication device for underground pipe network safety monitoring, sends at signal and arranges waveguide repeating coil as via node between coil and signal receiving coil；Signal sends coil, waveguide repeating coil and signal receiving coil and is embedded in underground, and is wound on underground piping formation magnetic waveguide passage；Instead of traditional electromagnetic wave radio communication by magnetic induction radio communication, monitor for network security in underground environment, improve Information Communication reliability；The method using magnetic induction waveguide relaying reduces Information Communication path loss, extends communication distance, it is achieved the stabilized communication of 300m distance；Trunking is constituted by closing resonance coil, it is not necessary to power supply and signal processing, can reduce communication system energy consumption；Transceiver communication coil shares a magnetic induction waveguide channel, can realize half-duplex operation, it is simple to the transmitted in both directions of information.
Description
Technical field
This utility model belongs to underground wireless communication technical field, relates to a kind of magnetic strength for underground pipe network safety monitoring
Answer wave guide communication device.
Background technology
The pipeline transportation relation national economic development and public safety, have freight volume greatly, not climate and other factors of ground
Limit, can work continuously and low cost and other advantages.In recent years, along with various pipelines dispose increase, pipe age increases, due to environment
The reasons such as burn into artificial destruction, pipe network facilities is aging, deformation, the problem such as damaged are day by day serious, threaten country's public safety and
People's property safety.Therefore, the regular maintenance of underground pipe network, safety monitoring seem extremely important.Along with industrial information not
Disconnected development, the requirement of monitoring pipeline safety technology is also improved constantly, to being applicable to the wireless of underground pipe network safety monitoring by country
Communication network proposes the most urgent demand.
In recent years, in order to meet the requirement of underground pipe network safety monitoring, propose to use radio sensing network to underground pipe network
Implement unmanned monitoring in real time.Radio sensing network have low cost, low-power consumption, without advantages such as on-site maintenances.But it is traditional
Radio sensing network many employings electromagnetic wave wireless communication technology, in underground environment residing for pipe network, electromagnetic communication path loss
Height, channel are unstable, communication distance is short, it is impossible to set up effective communication network.
Transmitting in underground environment due to electromagnetic wave wireless communication technology and there are the problems referred to above, people begin one's study magnetic induction
Wireless communication technology.Magnetic induction (Magnetic Induction) communication is by magnetic field coupled transfer signal, difference transmission mediums
Pcrmeability basically identical, therefore magnetic induction communication channel in underground environment is stable, there is not multipath loss.Pass through waveguide
The method of relaying extends magnetic induction wireless communication distance, is allowed to be applicable to underground pipe network safety monitoring.
Utility model content
The problem that presently, there are for underground pipe network safety monitoring communication, this utility model provides one for underground pipe network
The magnetic induction wave guide communication device of safety monitoring, its simple in construction, channel are stable, low in energy consumption, it is possible to complicated and changeable under adaptively
Environment, it is achieved underground pipe network safe condition is monitored the most reliably.
This utility model solves technical problem and be the technical scheme is that a kind of magnetic for underground pipe network safety monitoring
Sensing wave guide communication device, by realizing information by the way of magnetic induction coupling between dispatch coil in underground pipe network local environment
Transmission, including signal transmitting terminal and receiving terminal；Described transmitting terminal includes the differential phase being sequentially connected with by signal transmission order
Manipulator, power amplifier and signal send coil；Described receiving terminal includes the signal being sequentially connected with by signal transmission order
Receiving coil, receiving filter, automatic gain control amplifier and difference phase demodulation device；Connect at signal transmission coil and signal
Waveguide repeating coil is set between take-up circle as via node；Described signal sends coil, waveguide repeating coil and signal
Receiving coil is embedded in underground, and is wound on underground piping formation magnetic waveguide passage；This device also includes that information is adopted
Collection sensor, described sensor is connected with signal sending and receiving coil, for obtaining the information of underground pipe network.
It is the communication coil that structure is identical with signal receiving coil that described signal sends coil, and each communication coil can either
Send data and be able to receive that again data；Described communication coil along the length of pipeline at least provided with one group, adjacent two communication coils
Between equally distributed repeating coil be set constitute a communication unit, share a magnetic induction waveguide passage, it is achieved half
Duplex communication.
The communication coil being positioned at magnetic waveguide passage two ends is connected with the internal sensor being arranged on pipeline respectively,
Constitute back end, be used for obtaining pipe interior information；It is positioned at the middle communication coil of magnetic waveguide passage and is arranged on
External sensor outside pipeline connects, and constitutes sensor node, is used for obtaining pipeline external information.
Communication coil is made up of conductor coils and resonant capacitance, is directly wound in pipeline external, conductor coils radius r according to
Pipe radius r ' adjustment, i.e. r ≈ r ', coil turn is 5-10 circle, and resonant capacitance value C is by coil actual measurement inductance value L and signal frequency
Rate f together decides on, and its computing formula is
Waveguide repeating coil is made up of conductor coils and resonant capacitance, and repeating coil is the loop of a passive Guan Bi, all
Even is distributed between sending and receiving coil, and repeating coil adjacent spaces is variable.
Described repeating coil adjacent spaces 5m, when pipeline is metal tube, repeating coil interval is strengthened.
This device completes the transmission of information by the way of magnetic induction coupling between dispatch coil, and digital signal is through difference
Phase-modulation is loaded on transmission coil with sinusoidal wave form, if sending coil signal is sinusoidal current I=I0e-jωt, its
In, I0Being signal amplitude, ω is signal angular frequency, and ω=2 π f, f are system operating frequency, and this sinusoidal current excites the first relaying
Node produces the sinusoidal current I of same phase feature1, the first via node excites the second repeating coil to produce sinusoidal current I again2,
So on, these repeating coils form magnetic induction waveguide in underground environment, guide the continuous going down of magnetic signal, until connecing
Receive coil excitation and produce sinusoidal current In, restore primary signal through difference phase demodulation.
A kind of magnetic induction wave guide communication method for underground pipe network safety monitoring, will communication sending and receiving coil and sensor
Being connected, sensor is responsible for gathering the information relevant to pipeline, as transmission signal main source, in order to reduce energy consumption, takes main
From the communication pattern of request-reply, back end is principal communication node, and sensor node is from communication node, including following step
Rapid:
Step one, back end sends data request command by magnetic induction waveguide passage to sensor node；
Step 2, sensor node is detected pattern by park mode turn-on data after receiving request command, and sensor detects
Result is digital signal, is converted to the sine wave signal that magnetic induction transmission channel can be transmitted, Jing Guogong by deferential phase modulation
Rate amplifier is loaded into signal and sends on coil, is sent to back end；
Step 3, back end is received after signal through receiving filter filtering interference signals, warp by signal receiving coil
Cross difference phase demodulation after gain control amplifies and restore raw digital signal, after back end will gather signal packing arrangement
It is sent to pipe network operation monitoring center by earth's surface Wireless Telecom Equipment.
Beneficial effect: this utility model magnetic induction radio communication instead of traditional electromagnetic wave radio communication, in underground
Environment is monitored for network security, improves Information Communication reliability；The method using magnetic induction waveguide relaying reduces letter
Breath propagation path loss, extends communication distance, it is achieved the stabilized communication of 300m distance；The communicator that this utility model relates to
Simple in construction, easy for installation, the hardware cost of monitoring pipeline safety can be saved；Trunking is constituted by closing resonance coil,
Need not power supply and signal processing, communication system energy consumption can be reduced；Transceiver communication coil shares a magnetic induction waveguide
Channel, can realize half-duplex operation, it is simple to the transmitted in both directions of information.
Accompanying drawing explanation
Fig. 1 is a kind of magnetic induction wave guide communication equipments overall structure schematic diagram for underground pipe network safety monitoring；
Fig. 2 a is to send coil and the Principle of Signal Transmission schematic diagram of receiving coil；
Fig. 2 b is the communication coil transmission principle schematic diagram adding waveguide repeating coil；
Fig. 3 is a kind of magnetic induction wave guide communication method schematic diagram for underground pipe network safety monitoring.
1. differential phase demodulator, 2. power amplifier, 3. signal sends coil, 4. signal receiving coil, 5. receives filter
Ripple device, 6. automatic gain control amplifier, 7. difference phase demodulation device, 8. repeating coil, 9. pipeline, 10. internal sensor,
11. external sensors, 12. back end, 13. sensor nodes, 14. Wireless Telecom Equipments.
Detailed description of the invention
Below in conjunction with the accompanying drawings specific implementation method of the present utility model is further described:
As it is shown in figure 1, for the magnetic induction wave guide communication device of underground pipe network safety monitoring, including transmitting terminal: difference phase
Position manipulator 1, power amplifier 2 and signal send coil 3；Receiving terminal: signal receiving coil 4, receiving filter 5, automatically
Gain-controlled amplifier 6 and difference phase demodulation device 7.Waveguide repeating coil 8 is introduced as relaying joint between sending and receiving coil
Point.Described signal sends coil 3, waveguide repeating coil 8 and signal receiving coil 4 and is embedded in underground, and is wound in buried pipe
Magnetic waveguide passage is formed on road 9.
As shown in Figure 2 a, it is the communication coil that structure is identical with signal receiving coil 4 that described signal sends coil 3, each
Communication coil can either send data and be able to receive that again data；Described communication coil along the length of pipeline at least provided with one group, phase
Between adjacent two communication coils, equally distributed repeating coil 8 is set and constitutes a communication unit, share a magnetic induction waveguide
Transmission channel, it is achieved half-duplex operation.
Communication coil is made up of conductor coils and resonant capacitance, is directly wound in pipeline external, conductor coils radius r according to
Pipe radius r ' adjustment, i.e. r ≈ r ', coil turn is 5-10 circle, and resonant capacitance value C is by coil actual measurement inductance value L and signal frequency
Rate f together decides on, and its computing formula is
As shown in Figure 2 b, waveguide repeating coil 8 is made up of conductor coils and resonant capacitance, repeating coil 8 be one passive
The loop of Guan Bi, is evenly distributed between sending and receiving coil, and repeating coil 8 adjacent spaces is variable.By increasing sending and receiving coil
Between repeating coil 8 can improve communication performance, extend communication distance, it is contemplated that cost and arrange difficulty, it is impossible to nothing
The increase relaying quantity of limit, general repeater span takes 5m, and communication distance can reach 300m.Owing to metallic conduit itself has magnetic
Signal conduction, when pipeline 9 is metal tube, repeating coil 8 interval is strengthened.
As it is shown on figure 3, be positioned at the communication coil at magnetic waveguide passage two ends respectively with the inside being arranged on pipeline 9
Sensor 10 connects, and constitutes back end 12, is used for obtaining pipe interior information；It is positioned at leading in the middle of magnetic waveguide passage
Letter coil is connected with the external sensor 11 being arranged on outside pipeline, constitutes sensor node 13, is used for obtaining the outside letter of pipeline 9
Breath.
Signal source is essentially from information acquisition sensor, and sensor is responsible for detecting the inside and outside information of pipeline, and testing result is number
Word signal, is loaded on carrier wave by the way of differential phase 2DPSK is modulated, and carrier wave selects the sine wave signal of 10MHz.This reality
Realize by programmable gate array FPGA core board and peripheral circuits thereof with novel involved 2DPSK signal modulation, demodulation.FPGA
It is fast that device has low in energy consumption, speed, can solve conventional custom circuit and the shortcoming of programming device gate circuit.Utilize FPGA real
Existing software wireless Electricity Functional, uses the mode of binary system differential phase 2DPSK modulation to digital signal modulated, signal is modulated
The frequency range of 10MHz.In order to improve the intensity launching signal, the signal after modulation inputs after power amplifier 2 amplifies
Coil 3 is sent to signal.Class a audio power amplifier device selected by power amplifier 2, and this amplifier always works at the range of linearity, output letter
Number quality is good, will not distortion.
Signal is affected by the ambient in transmitting procedure can introduce noise signal, will be by accepting filter during reception
Device 5 is filtered processing.Further, receiving terminal needed to be entered signal by automatic gain control amplifier 6 before signal demodulates
Row processing and amplifying, then carries out difference phase demodulation and restores raw digital signal.Receiving filter 5 uses the LC of 10MHZ also
Connection resonant selecting frequency loop, filters the interference signal beyond 10MHZ.Automatic gain control amplifier 6 uses two-stage AD603 to constitute
Automatic growth control (AGC) circuit, AD603 is the broadband of AD company of U.S. release, low noise, low distortion, high-gain precision
Voltage-controlled VGA chip, amplitude output signal is controlled.
As shown in Fig. 2 a, 2b, this device completes the transmission of information, number by the way of magnetic induction coupling between dispatch coil
Word signal is loaded into signal through deferential phase modulation with sinusoidal wave form and sends on coil 3, if sending coil signal is just
String electric current I=I0e-jωt, wherein, I0Being signal amplitude, ω is signal angular frequency, and ω=2 π f, f are system operating frequency, and this is just
String electric current excites the first via node to produce the sinusoidal current I of same phase feature1, the first via node excites the second relaying again
Coil produces sinusoidal current I2, so on, these repeating coils 8 form magnetic induction waveguide in underground environment, guide magnetic letter
Number continuous going down, until signal receiving coil 4 excites generation sinusoidal current In, restore original through difference phase demodulation
Signal.
Embodiment
Below in conjunction with embodiment and Fig. 3, this utility model is made into an explanation.Utilize one of the present utility model for
The magnetic induction waveguide circulation method of underground pipe network safety monitoring, is monitored underground piping, mainly comprises the steps that
Step one, the back end 12 at magnetic waveguide passage two ends is connected with internal sensor 10, utilizes internal biography
Sensor 10 measures the parameters such as the pressure of pipeline 9 internal flow, flow velocity, finds out pipeline 9 by measurement result and the safety such as leakage occur
The suspicious region of problem；Without finding that suspicious region then repeats step one, otherwise by magnetic induction waveguide passage to
Sensor node 13 sends data request command；
Step 2, sensor node 13 is in park mode before receiving request command, opens immediately after receiving request command
Data Detection pattern, utilizes external sensor 11 to detect the environmental informations such as the temperature around pipeline 9, humidity, sensor detection knot
Fruit is digital signal, is converted to, by deferential phase modulation 2DPSK, the sine wave signal that magnetic induction waveguide passage can transmit,
It is loaded on transmission coil through power amplifier, is sent to the back end 12 at magnetic induction waveguide passage two ends；
Step 3, back end 12 is believed through receiving filter 5 filtering interfering after receiving signal by signal receiving coil 4
Number, after amplifying from gain control, the demodulation of differential phase 2DPSK restores raw digital signal, and collection is believed by back end 12
Number packing is sent to pipe network operation monitoring center by earth's surface Wireless Telecom Equipment 14 after arranging, pipe network operation monitoring center according to
Testing result judges whether pipe network safety problem occurs and generate examining report, in order to maintainer makes process in time.
Claims (7)
1. the magnetic induction wave guide communication device for underground pipe network safety monitoring, it is characterised in that residing for underground pipe network
Environment realizes by the way of magnetic induction coupling between dispatch coil the transmission of information, including signal transmitting terminal and receiving terminal；
Described transmitting terminal includes that the differential phase demodulator, power amplifier and the signal that are sequentially connected with by signal transmission order send line
Circle；Signal receiving coil that described receiving terminal includes being sequentially connected with by signal transmission order, receiving filter, automatic growth control
Amplifier and difference phase demodulation device；Signal send arrange between coil and signal receiving coil waveguide repeating coil as in
Continue node；Described signal sends coil, waveguide repeating coil and signal receiving coil and is embedded in underground, and is wound in buried pipe
Magnetic waveguide passage is formed on road；This device also includes information acquisition sensor, described sensor and signal sending and receiving coil
Connect, for obtaining the information of underground pipe network.
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring the most according to claim 1, its feature
Being, it is the communication coil that structure is identical with signal receiving coil that described signal sends coil, and each communication coil can either be sent out
Data are sent to be able to receive that again data；Described communication coil along the length of pipeline at least provided with one group, adjacent two communication coils it
Between arrange equally distributed repeating coil constitute a communication unit, share a magnetic induction waveguide passage, it is achieved half pair
Work communicates.
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring the most according to claim 2, its feature
Being, the communication coil being positioned at magnetic waveguide passage two ends is connected with the internal sensor being arranged on pipeline respectively, structure
Become back end, be used for obtaining pipe interior information；It is positioned at the middle communication coil of magnetic waveguide passage and is arranged on pipe
External sensor outside road connects, and constitutes sensor node, is used for obtaining pipeline external information.
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring the most according to claim 2, its feature
Being, communication coil is made up of conductor coils and resonant capacitance, is directly wound in pipeline external, and conductor coils radius r is according to pipe
Road radius r ' adjustment, i.e. r ≈ r ', coil turn is 5-10 circle, and resonant capacitance value C is by coil actual measurement inductance value L and signal frequency f
Together deciding on, its computing formula is
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring the most according to claim 1 and 2, it is special
Levying and be, waveguide repeating coil is made up of conductor coils and resonant capacitance, and repeating coil is the loop of a passive Guan Bi, uniformly
Be distributed between sending and receiving coil, repeating coil adjacent spaces is variable.
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring the most according to claim 1, its feature
Being, described repeating coil adjacent spaces 5m, when pipeline is metal tube, repeating coil interval is strengthened.
A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring the most according to claim 1, its feature
Being, this device completes the transmission of information by the way of magnetic induction coupling between dispatch coil, and digital signal is through difference phase
Position modulation is loaded on transmission coil with sinusoidal wave form, if sending coil signal is sinusoidal current I=I0e-jωt, wherein, I0
Being signal amplitude, ω is signal angular frequency, and ω=2 π f, f are system operating frequency, and this sinusoidal current excites the first via node
Produce the sinusoidal current I of same phase feature1, the first via node excites the second repeating coil to produce sinusoidal current I again2, so
Going down, these repeating coils form magnetic induction waveguide in underground environment, guide the continuous going down of magnetic signal, until receiving line
Circle excites generation sinusoidal current In, restore primary signal through difference phase demodulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586230.5U CN205670380U (en) | 2016-06-15 | 2016-06-15 | A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586230.5U CN205670380U (en) | 2016-06-15 | 2016-06-15 | A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring |
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| CN205670380U true CN205670380U (en) | 2016-11-02 |
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| CN201620586230.5U Expired - Fee Related CN205670380U (en) | 2016-06-15 | 2016-06-15 | A kind of magnetic induction wave guide communication device for underground pipe network safety monitoring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931449A (en) * | 2016-06-15 | 2016-09-07 | 中国矿业大学 | Magnetic induction waveguide communication device and method for underground pipe network safety monitoring |
| WO2018188355A1 (en) * | 2017-04-14 | 2018-10-18 | 中国矿业大学 | Underground magnetic-induction wireless communication device and method |
| CN115882901A (en) * | 2019-12-31 | 2023-03-31 | 上海阪辉新能源科技有限公司 | Ground end equipment, mobile end equipment and control method |
-
2016
- 2016-06-15 CN CN201620586230.5U patent/CN205670380U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931449A (en) * | 2016-06-15 | 2016-09-07 | 中国矿业大学 | Magnetic induction waveguide communication device and method for underground pipe network safety monitoring |
| CN105931449B (en) * | 2016-06-15 | 2021-08-17 | 中国矿业大学 | Magnetic induction waveguide communication device and method for underground pipe network safety monitoring |
| WO2018188355A1 (en) * | 2017-04-14 | 2018-10-18 | 中国矿业大学 | Underground magnetic-induction wireless communication device and method |
| CN115882901A (en) * | 2019-12-31 | 2023-03-31 | 上海阪辉新能源科技有限公司 | Ground end equipment, mobile end equipment and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161102 Termination date: 20180615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |