CN214372293U - Real-time health condition monitoring system for ocean buoy communication antenna - Google Patents
Real-time health condition monitoring system for ocean buoy communication antenna Download PDFInfo
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- CN214372293U CN214372293U CN202120359438.4U CN202120359438U CN214372293U CN 214372293 U CN214372293 U CN 214372293U CN 202120359438 U CN202120359438 U CN 202120359438U CN 214372293 U CN214372293 U CN 214372293U
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Abstract
The utility model discloses a real-time health monitoring system for a communication antenna of an ocean buoy, which comprises a communication antenna and a base, wherein the communication antenna comprises an antenna shell and a high-frequency transmission coil positioned in the antenna shell, at least 3 fiber bragg grating strain sensors are radially distributed on the inner wall of the bottom of the antenna shell, and a fiber bragg grating temperature sensor is arranged on the upper surface of the base; the buoy is internally provided with a fiber grating demodulator, an attitude sensor, a communication module, a data acquisition processing module and a power supply module, the communication antenna positioned in the antenna shell is connected with the communication module through a coaxial feeder, and the fiber grating strain sensor and the fiber grating temperature sensor are connected with the fiber grating demodulator through transmission optical fibers. The utility model discloses a monitoring system can real-time supervision ocean buoy communication antenna's deformation data, provides data analysis support for communication antenna's fatigue degree, and early warning in time is convenient for improve maintenance efficiency, reduces the maintenance cost.
Description
Technical Field
The utility model relates to a communication antenna monitoring field, in particular to ocean buoy communication antenna health status real-time monitoring system.
Background
The ocean buoy is one of important technical means for ocean data monitoring as an automatic unattended ocean guardian. The success rate of data communication is an important index for checking the performance of the ocean buoy, and the integrity of the buoy communication antenna directly influences the data transmission quality. However, the ocean buoy communication antenna is often damaged or even broken due to wave slapping, buoy swinging, ship collision, salt spray corrosion and the like, so that the ocean buoy data communication fails.
At present, an effective means for health real-time monitoring and early warning of an ocean buoy communication antenna structure is lacked. When the data transmission rate of the buoy is reduced and even communication is interrupted, pointed offshore maintenance and deployment cannot be performed due to the fact that the health condition of the communication antenna cannot be judged, and the offshore field inspection cost is high and the efficiency is low. Therefore, a system and a method for monitoring the health condition of the communication antenna of the ocean buoy in real time are urgently needed.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a marine buoy communication antenna health status real-time monitoring system, deformation data that can real-time supervision marine buoy communication antenna provides data analysis support for communication antenna's fatigue degree, and early warning in time is convenient for improve maintenance efficiency, reduces the maintenance cost.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a real-time health monitoring system for a communication antenna of an ocean buoy comprises the communication antenna and a base used for installing the communication antenna on the buoy, wherein the communication antenna comprises an antenna shell and a high-frequency transmission coil positioned in the antenna shell, at least 3 fiber grating strain sensors are radially distributed on the inner wall of the bottom of the antenna shell, and a fiber grating temperature sensor is arranged on the upper surface of the base; the buoy is internally provided with a fiber grating demodulator, an attitude sensor, a communication module, a data acquisition processing module and a power supply module, the high-frequency transmission coil is connected with the communication module through a coaxial feeder line, the fiber grating strain sensor and the fiber grating temperature sensor are connected with the fiber grating demodulator through transmission optical fibers, the fiber grating demodulator is in two-way communication with the data acquisition processing module, and the data acquisition processing module is in two-way communication with the communication module.
In the above scheme, the fiber grating demodulator comprises a light source, an optical splitter, a coupler, a wavelength detection and processing unit, a temperature control component, a driving unit and a power supply unit, wherein the driving unit is used for controlling the light source, light emitted by the light source reaches the fiber grating strain sensor and the fiber grating temperature sensor through the optical splitter and the coupler, wavelengths reflected by the fiber grating strain sensor and the fiber grating temperature sensor reach the wavelength detection and processing module through the coupler again, and the temperature control component provides temperature control for the light source.
In the above scheme, the antenna housing is made of glass fiber.
In the above scheme, the resonant wavelength range of the fiber grating strain sensor is a C + L waveband.
In the above scheme, the fiber grating temperature sensor is mounted on the base in a laser spot welding mode.
In the above scheme, the transmission fiber is a single-mode communication fiber, and a sleeve, a kevlar rope and a protective layer are arranged outside the transmission fiber.
In the above scheme, the wavelength range of the fiber grating demodulator is C + L waveband.
In the above scheme, the power supply module adopts a photovoltaic-lithium battery combined power supply mode.
In the above scheme, the fiber grating strain sensors include 3, are installed at the same horizontal position of the bottom of the communication antenna, and are installed at 120 degrees with each other.
A real-time health condition monitoring method for an ocean buoy communication antenna adopts the monitoring system, and comprises the following steps:
(1) the fiber grating demodulator actively acquires original reflection wavelength data of a fiber grating strain sensor and a fiber grating temperature sensor, calculates the structural parameters of the root of the communication antenna by using the original reflection wavelength data of the fiber grating strain sensor, and performs temperature compensation on the structural parameters of the communication antenna by using the original reflection wavelength data of the fiber grating temperature sensor;
(2) when the communication antenna is in a vertical static state, the data acquisition and processing module actively acquires deformation data calculated by the fiber grating demodulator and attitude data of the attitude sensor, and establishes an initial state fitting model;
(3) when the buoy enables the communication antenna to swing under the action of wind, waves and flow, the long wave peak of the reflected wave of each fiber grating strain sensor moves left and right, the fiber grating demodulator calculates the deformation data of the communication antenna by using the wave peak movement amount of the reflected wave, the data acquisition and processing module actively acquires the deformation data calculated by the fiber grating demodulator, evaluates the fatigue degree of the communication antenna, and compares the initial state fitting model with the azimuth data of the attitude sensor to calculate the swing angle and direction of the communication antenna.
Through the technical scheme, the utility model provides a marine buoy communication antenna health status real-time monitoring system has following beneficial effect:
1. the utility model discloses a fiber grating strain sensor and fiber grating temperature sensor gather deformation data and temperature data, compare traditional electrical sensor, and fiber grating strain sensor possesses following advantage:
the traditional electric sensor is generally a single-point resistance strain gauge which is used in combination with an elastic element, each strain sensor has at least 2 leads, and the leads cannot be connected in a narrow space of about 5 mm inside the buoy communication antenna. The optical fiber is different, the outer diameter of the packaged optical fiber is smaller than 1mm, one optical fiber can be connected with a plurality of fiber bragg gratings in series for distributed measurement, the laser spot welding is carried out on the specified position without extra wiring, and the requirement of a narrow space on miniaturization of the sensor is met.
The electrical strain sensor is easily affected by corrosion in a high-temperature and humid environment of a marine environment, and the fiber grating sensor belongs to a passive device, can resist salt spray corrosion and is free of maintenance through optical signal measurement.
2. The utility model discloses a gather communication antenna's deformation data and temperature data, combine buoy attitude data, calculate communication antenna's angle of sway and direction, realize the real-time supervision and the timely early warning to ocean buoy communication antenna fatigue degree, can improve work efficiency, reduce the maintenance cost.
3. The utility model discloses can provide new thinking for the tired real-time supervision of communication antenna and the early warning in a plurality of fields such as buoy, have important meaning.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of an ocean buoy disclosed in an embodiment of the present invention;
fig. 2 is a schematic view of the installation position of the real-time health monitoring system for the ocean buoy communication antenna of the present invention;
fig. 3 is a schematic view of a health status real-time monitoring system of the ocean buoy communication antenna disclosed in the embodiment of the present invention;
fig. 4 is a schematic view of a fiber grating sensing principle of a fiber grating demodulator disclosed in an embodiment of the present invention;
fig. 5 is a schematic view of a swing angle of the communication antenna according to the present invention;
fig. 6 is an installation orientation chart of the fiber grating strain sensor and the attitude sensor of the present invention;
fig. 7 is the wavelength display graph of the fiber grating strain sensor and the fiber grating temperature sensor of the present invention.
In the figure, 1, an antenna housing; 2. the transmission optical fiber 3 and the fiber bragg grating strain sensor; 4. a fiber grating temperature sensor; 5. a base; 6. a fiber grating demodulator; 7. a power supply cable; 8. a power supply module; 9. a data acquisition processing module; 10. a communication module; 11. a coaxial feed line; 12. an attitude sensor; 13. a communication antenna; 14. a float; 15. a high-frequency transmission coil.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The utility model provides a real-time monitoring system of ocean buoy communication antenna health, this monitoring system install on ocean buoy 14 as shown in figure 1, including communication antenna 13 with be used for installing communication antenna 13 base 5 on buoy 14, communication antenna 13 includes antenna housing 1 and is located its inside high frequency transmission coil 15.
As shown in fig. 2, 3 fiber grating strain sensors 3 are radially distributed on the inner wall of the bottom of the antenna housing 1, and a fiber grating temperature sensor 4 is welded on the upper surface of the base 5 in a laser spot welding manner. Deformation data and temperature data of the communication antenna 13 are monitored in real time through the fiber bragg grating strain sensor 3 and the fiber bragg grating temperature sensor 4.
The fiber grating demodulator 6, the attitude sensor 12, the communication module 10, the data acquisition processing module 9 and the power supply module 8 are installed inside the buoy 14, the high-frequency transmission coil 15 is connected with the communication module 10 through the coaxial feeder 11, and the fiber grating strain sensor 3 and the fiber grating temperature sensor 4 are connected with the fiber grating demodulator 6 through the transmission optical fiber 2. When the communication antenna 13 deforms due to swinging, the fiber grating demodulator 6 obtains reflection wavelength data of the fiber grating strain sensor 3 and the fiber grating temperature sensor 4, and obtains deformation data of the communication antenna 13 after temperature compensation through calculation. As shown in fig. 3, the fiber grating demodulator 6 is in bidirectional communication with the data acquisition and processing module 9, and the data acquisition and processing module 9 is in bidirectional communication with the communication module 10; the data acquisition processing module 9 acquires deformation data of the fiber grating demodulator 6 and attitude data of the attitude sensor 12, and is used for calculating the swing angle and direction of the communication antenna 13. The power supply module 8 provides power support for the fiber grating demodulator 6, the communication module 10 and the data acquisition and processing module 9 through the power supply cable 7.
The communication antenna 13 is made of glass fiber, belongs to a hard pipe, has the characteristics of long service life, light weight, high strength, good elasticity, seawater corrosion resistance and the like, is internally provided with a copper high-frequency transmission coil 15 and is used for high-frequency communication.
The resonant wavelength range of the fiber grating strain sensor 3 is the C + L waveband.
The temperature data collected by the fiber grating temperature sensor 4 is used for temperature compensation of the fiber grating strain sensor 3. The fiber grating temperature sensor 4 is packaged by adopting a high-performance stainless steel material, and is installed on the base 5 in a laser welding mode, so that the installation is firm, no damage is caused to the surface of the base 5, and the fiber grating temperature sensor is small in size and convenient to install.
The transmission optical fiber 2 is a common single-mode communication optical fiber, and a 900-micron sleeve, a Kevlar rope and a protective layer are arranged outside the transmission optical fiber.
The wavelength range of the fiber grating demodulator 6 is C + L wave band, the power consumption is less than 15W, the fiber grating demodulator can work in the environment of-25 ℃ to +85 ℃, the requirement of waterproof grade IP67 is met, and salt mist resistance and high temperature resistance are achieved.
And the data acquisition processing module 9 is used for acquiring, processing, storing and sending all data information of the buoy 14, sending the data of the swing angle and the direction of the communication antenna 13 to the shore-based receiving station on time according to user requirements, and receiving a remote control command of the shore-based receiving station.
And the power supply module 8 adopts a photovoltaic-lithium battery combined power supply mode to provide stable 12-24V electric energy for the buoy 14 system and maintain the electric quantity supply of the system.
As shown in fig. 4, the fiber grating demodulator 6 includes a light source, an optical splitter, a coupler, a wavelength detection and processing unit, a temperature control component, a driving unit and a power supply unit, the driving unit is used for controlling the light source, light emitted by the light source reaches the fiber grating strain sensor 3 and the fiber grating temperature sensor through the optical splitter and the coupler, wavelengths reflected by the fiber grating strain sensor 3 and the fiber grating temperature sensor reach the wavelength detection and processing module through the coupler again, and the temperature control component provides temperature control for the light source to cool the light source.
The light signal that the light source produced divide into multichannel light signal through optical divider, utilizes wavelength division multiplexing's mode can realize multichannel multisensor on-line monitoring simultaneously, makes the utility model discloses a hardware expansibility is stronger. The variation of the reflection wavelength of the fiber grating strain sensor 3 and the fiber grating temperature sensor 4 has a linear function relationship with the variation of the external strain and the variation of the temperature. The optical signal passes through the 3dB coupler to reach the fiber grating strain sensor 3 and the fiber grating temperature sensor 4, the reflection wavelengths of the fiber grating strain sensor 3 and the fiber grating temperature sensor 4 pass through the 3dB coupler again to reach the wavelength detection and processing module, and the measurement of external strain and temperature parameters is realized. The strain sensitivity of a typical fiber grating strain sensor 3 is 1.2 pm/microstrain, the temperature sensitivity of a fiber grating temperature sensor 4 is 10 pm/DEG C, strain and temperature data of a communication antenna 13 are calculated by utilizing the peak movement amount of reflection wavelength, and the fatigue degree of the communication antenna 13 is evaluated.
In addition, the variation of the reflection wavelength of the fiber grating has a certain functional relationship with the swing angle of the communication antenna 13. When the communication antenna 13 of the buoy 14 is in a static state, as shown in fig. 5, the communication antenna 13 forms an angle theta with the base 5x＝θy＝θz(ii) a When the communication antenna 13 swings, for example, the angle θ between the communication antenna 13 and the base 5x>θy>θzBy using the vector array positioning principle and combining the orientation data of the attitude sensor 12 carried by the buoy 14, the swing direction and the swing angle delta theta of the communication antenna 13 can be calculated, so that the health condition of the communication antenna 13 is inverted and early warning is timely given out.
The utility model also provides a marine buoy 14 communication antenna 13 health status real-time supervision method, including following step:
firstly, configuring parameters of a fiber grating demodulator 6, including setting configuration parameters, data output frequency and the like, installing a fiber grating strain sensor 3 at the root of an antenna shell 1, and spot-welding a fiber grating temperature sensor 4 on the upper surface of a base 5. The installation positions of the fiber grating strain sensors 3 are kept in the same horizontal plane as much as possible and are uniformly distributed, and the fiber grating strain sensors form an included angle of 120 degrees; and the north direction of the attitude sensor 12 is required to be consistent with the direction of the fiber grating strain sensor 1, as shown in fig. 6. And a data acquisition and processing module 9, a communication module 10, a fiber grating demodulator 6 and an attitude sensor 12 are arranged in an instrument cabin of the buoy 14.
Because of the continuous working mode of the fiber grating demodulator 6, the design is carried out with low power consumption, the light source in the fiber grating demodulator 6 adopts a femtosecond laser, the temperature control component effectively protects the heating problem of the light source, and the requirement of industrial products is met.
And secondly, after the installation is finished, the system is powered on. The fiber grating demodulator actively acquires original reflection wavelength data of a fiber grating strain sensor and a fiber grating temperature sensor, calculates the structural parameters of the root of the communication antenna by using the original reflection wavelength data of the fiber grating strain sensor, and performs temperature compensation on the structural parameters of the communication antenna by using the original reflection wavelength data of the fiber grating temperature sensor;
thirdly, when the communication antenna 13 is in a vertical static state, the data acquisition and processing module 9 actively acquires deformation data calculated by the fiber grating demodulator 6 and attitude data of the attitude sensor 12, and establishes an initial state fitting model;
an initial state fitting model may be established by the buoy 14 when first installed, requiring the base 5 to be in a horizontal position. After the buoy 14 is powered on, initial state fitting coefficients are determined according to attitude data of the attitude sensor 12.
Fourthly, when the buoy 14 swings the communication antenna 13 under the action of wind, waves and current, the long wave peak of the reflected wave of each fiber grating strain sensor 3 moves left and right, as shown in fig. 7, wherein the directions of the movement of the wave peaks of the reflected wave of the three fiber grating strain sensors 3 are the same, but the sizes are different. The fiber grating demodulator 6 calculates the deformation size and the quantity of the communication antenna 13 by utilizing the peak shift amount of the reflection wavelength, and the data acquisition and processing module actively acquires the deformation size and the quantity calculated by the fiber grating demodulator 6 and evaluates the fatigue degree of the communication antenna 13; and then, the direction data of the attitude sensor 12 is combined, and the initial state fitting model is compared to calculate the swinging angle and the direction of the communication antenna 13. And storing the calculated swing angle and direction of the communication antenna 13 in a local standby mode, and sending alarm information to a shore-based receiving station in time. When the swing angle delta theta between the communication antenna 13 and the base 5 is less than 5 degrees, the communication antenna 13 is considered to be capable of normally working in the swing range, and strain and temperature data of the communication antenna 13 are normally reported according to the data acquisition and transmission interval of the data acquisition and processing module 9. When the swing angle between the communication antenna 13 and the base 5 is more than 5 degrees and less than delta theta and less than 15 degrees, the swing angle of the communication antenna 13 is considered to be larger, and early warning information is sent to a shore-based receiving station to report the early warning condition. When the swing angle delta theta between the communication antenna 13 and the base 5 is larger than 15 degrees, the swing angle of the communication antenna 13 is considered to be too large, and alarm information needs to be immediately sent to a shore base receiving station to remind a worker to pay attention to the working state of the buoy 14. Especially when the rocking angle Δ θ exceeds 6 continuous communication frequencies > 15 °, it means that the communication antenna 13 is likely to be broken, and the communication antenna 13 needs to be replaced at sea.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A real-time health monitoring system for a communication antenna of an ocean buoy comprises the communication antenna and a base used for installing the communication antenna on the buoy, wherein the communication antenna comprises an antenna shell and a high-frequency transmission coil positioned in the antenna shell; the buoy is internally provided with a fiber grating demodulator, an attitude sensor, a communication module, a data acquisition processing module and a power supply module, the high-frequency transmission coil is connected with the communication module through a coaxial feeder line, the fiber grating strain sensor and the fiber grating temperature sensor are connected with the fiber grating demodulator through transmission optical fibers, the fiber grating demodulator is in two-way communication with the data acquisition processing module, and the data acquisition processing module is in two-way communication with the communication module.
2. The system for monitoring the health condition of the communication antenna of the ocean buoy according to claim 1, wherein the fiber grating demodulator comprises a light source, an optical splitter, a coupler, a wavelength detection and processing unit, a temperature control component, a driving unit and a power supply unit, the driving unit is used for controlling the light source, light emitted by the light source reaches the fiber grating strain sensor and the fiber grating temperature sensor through the optical splitter and the coupler, wavelengths reflected by the fiber grating strain sensor and the fiber grating temperature sensor reach the wavelength detection and processing module through the coupler again, and the temperature control component provides temperature control for the light source.
3. The system of claim 1, wherein the antenna housing is made of glass fiber.
4. The system for monitoring health of an ocean buoy communication antenna in real time as claimed in claim 1, wherein the resonant wavelength range of the fiber grating strain sensor is C + L band.
5. The system for monitoring health of a communication antenna of a marine buoy as claimed in claim 1, wherein the fiber grating temperature sensor is mounted on the base by laser spot welding.
6. The system for monitoring the health condition of the communication antenna of the ocean buoy according to claim 1, wherein the transmission optical fiber is a single-mode communication optical fiber, and a sleeve, a Kevlar rope and a protective layer are arranged outside the single-mode communication optical fiber.
7. The system for monitoring health of an ocean buoy communication antenna in real time as claimed in claim 1, wherein the wavelength range of the fiber grating demodulator is C + L band.
8. The system for monitoring health conditions of communication antennas of ocean buoys in real time according to claim 1, wherein the power supply module adopts a photovoltaic-lithium battery combined power supply mode.
9. The system for monitoring the health condition of the communication antenna of the ocean buoy as claimed in claim 1, wherein 3 fiber grating strain sensors with an included angle of 120 degrees are radially distributed on the same horizontal position of the inner wall of the bottom of the antenna shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120359438.4U CN214372293U (en) | 2021-02-09 | 2021-02-09 | Real-time health condition monitoring system for ocean buoy communication antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120359438.4U CN214372293U (en) | 2021-02-09 | 2021-02-09 | Real-time health condition monitoring system for ocean buoy communication antenna |
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| CN214372293U true CN214372293U (en) | 2021-10-08 |
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| CN202120359438.4U Active CN214372293U (en) | 2021-02-09 | 2021-02-09 | Real-time health condition monitoring system for ocean buoy communication antenna |
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- 2021-02-09 CN CN202120359438.4U patent/CN214372293U/en active Active
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