阅读说明：本技术 基于光频域反射测量技术的能量感知系统及方法 (Energy sensing system and method based on optical frequency domain reflection measurement technology ) 是由 洪成雨 许承恺 陈湘生 苏栋 孙晓辉 于 2021-08-25 设计创作，主要内容包括：本发明提供基于光频域反射测量技术的水位能量监测系统及方法,涉及水位能量测量技术领域。包括：主体框架、至少四个测量单元、传输终端和供电装置,各个所述测量单元围合安装在所述主体框架上用于测量不同方向上的水位能量数据参数,所述测量单元包括水平周期测量模组、纵向波幅测量模组和纵向流速测量模组；所述传输终端用于传输所述测量单元采集的数据参数；所述供电装置为整体系统供电。本发明提供了一种基于光频域反射测量技术的水位能量监测系统及方法,用于解决现有技术中由于水浪波动的方向具有随机性使得现有的装置不能多方位多地形地准确测量水位能且无法得到连续的综合性数据等问题。(The invention provides a water level energy monitoring system and method based on an optical frequency domain reflection measurement technology, and relates to the technical field of water level energy measurement. The method comprises the following steps: the device comprises a main body frame, at least four measuring units, a transmission terminal and a power supply device, wherein each measuring unit is arranged on the main body frame in a surrounding mode and used for measuring water level energy data parameters in different directions, and each measuring unit comprises a horizontal period measuring module, a longitudinal amplitude measuring module and a longitudinal flow velocity measuring module; the transmission terminal is used for transmitting the data parameters acquired by the measurement unit; the power supply device supplies power to the whole system. The invention provides a water level energy monitoring system and method based on an optical frequency domain reflection measurement technology, which are used for solving the problems that in the prior art, due to the randomness of the fluctuation direction of water waves, the existing device cannot accurately measure water level energy in multiple directions and multiple terrains, continuous comprehensive data cannot be obtained, and the like.)

1. A water level energy monitoring system based on optical frequency domain reflectometry can be placed in a water body to monitor and collect water level energy data parameters of the water level energy monitoring system, and is characterized by comprising:

a main body frame;

the measuring units are arranged on the main body frame in a surrounding manner and used for measuring water level energy data parameters in different directions, and each measuring unit comprises a horizontal period measuring module, a longitudinal wave amplitude measuring module and a longitudinal flow velocity measuring module;

the transmission terminal is used for transmitting the data parameters acquired by the measurement unit;

and the power supply device supplies power to the whole system.

2. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 1, wherein:

the main body frame comprises a transverse frame rod and a longitudinal frame rod, and the transverse frame rod and the longitudinal frame rod are combined to form a cubic structure.

3. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 2, wherein:

the anchoring rod is connected with the bottom of the main body frame, and can be anchored into the bottom of the water body to fix the position of the main body frame in the water body.

4. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 2, wherein:

the horizontal period measuring module comprises a stress plate and a low coherence interferometry module,

the low coherence interferometry module is fixed on the transverse frame rod, the stress plate is connected with the low coherence interferometry module, and the low coherence interferometry module is located between the transverse frame rod and the stress plate.

5. The water level energy monitoring system based on optical frequency domain reflectometry technology as in claim 4, wherein:

the low coherence interferometry module comprises a first fixed part, a second fixed part and a sliding part,

the first fixing piece is fixedly connected with the second fixing piece, a sliding rail is arranged on the first fixing piece, the sliding piece is slidably mounted on the first fixing piece, the sliding piece is hinged to the surface of the stress plate, the stress plate drives the sliding piece to slide on the sliding rail through the impact of water flow on the stress plate, and the distance between the second fixing piece and the sliding piece is changed along with the back-and-forth sliding of the sliding piece;

the second fixing piece is connected with the sliding piece through a spring, and a low-coherence interference optical fiber sensor is arranged on the spring;

and a limiting connecting rod structure is arranged between the second fixing piece and the sliding piece, two ends of the limiting connecting rod structure are respectively connected with the sliding piece and the second fixing piece, and the limiting connecting rod structure is used for limiting the sliding stroke of the sliding piece.

6. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 2, wherein:

the longitudinal wave amplitude measuring module comprises a measuring floating ball and a reticular fixed structure,

the reticular fixed structure is arranged between the transverse frame rod at the top and the transverse frame rod at the bottom, the measuring floating ball is connected with the reticular fixed structure through a flexible optical cable,

an OFDR optical fiber sensor is embedded in the flexible optical cable.

7. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 2, wherein:

the longitudinal flow velocity measurement module comprises a bidirectional crossed cylindrical structure and a fixed rod,

the fixing rod is vertically arranged between the top transverse frame rod and the bottom transverse frame rod, the bidirectional cross cylindrical structure is fixed on the fixing rod and is uniformly arranged along the rod length direction of the fixing rod,

the two-way cross cylindrical structure is internally provided with a sheet sensor of OFDR optical fibers.

8. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 1, wherein:

the power supply device is a solar panel.

9. The water level energy monitoring system based on optical frequency domain reflectometry as in claim 1, wherein:

the transmission terminal uploads the data parameters acquired by the measuring unit to the cloud analysis platform for calculation and analysis.

10. A method for utilizing a water level energy monitoring system based on optical frequency domain reflectometry, comprising:

the stress plate in the horizontal period measuring module is impacted by the water flow of the target measuring water body and transmits the impact force to the low-coherence interference measuring module to measure the water level fluctuation period T and the axial strain epsilon generated by the water body fluctuation impact load_{Optical fiber}(ii) a The position of a measuring floating ball of the longitudinal wave amplitude measuring module is freely changed in a limited space under the restraint of a flexible optical cable when the measuring floating ball is subjected to the buoyancy of water, the measuring floating ball is freely drooped when the measuring floating ball is not subjected to the buoyancy of water, the fluctuation change condition of a corresponding certain point is collected through the axial tensile stress change of the flexible optical cable, and the longitudinal wave amplitude measuring module can measure the water level wave amplitude A and the wavelength L; the sheet sensor of the OFDR optical fiber of the longitudinal flow velocity measurement module can bear the uniform load in the water flow direction, the water flow velocity can be measured, the distribution of the water flow velocity in a measurement area can be reflected through multi-point data acquisition, and the water flow wave velocity V can be measured by the longitudinal flow velocity measurement module_g；

The transmission terminal transmits the relevant parameters collected by each module to the cloud analysis platform for analysis and calculation, potential energy and kinetic energy of the unit wave surface width are added together, the water level energy can be calculated, the water level kinetic energy is the result of superposition of water particle transverse motion and longitudinal motion, and the potential energy and the kinetic energy sum of the water level energy E can be expressed as follows:wherein g is the acceleration of gravity and ρ is the density of water; water level average energy flux or fluctuation period energy P_wComprises the following steps:and the relation between the water level fluctuation period T and the wavelength L:so P_wIt can also be expressed as:the impact load F in the water wave is: f ═ E ∈_{Optical fiber}。

Technical Field

The invention relates to the technical field of water level energy measurement, in particular to a water level energy monitoring system and method based on an optical frequency domain reflection measurement technology.

Background

The water level energy is the sum of kinetic energy and potential energy on the surface and inside the water body, and the sum of the energy is in direct proportion to the square of the wave amplitude of the surface wave of the water body and the period of the wave. The water level energy is limited by the difference of different environments, different regions and geographical conditions, the total amount of the energy stored in the water level energy is considerable but the total amount of the energy stored in the water level energy does not have statistical rules and distribution characteristics, the water level energy under the marine environment condition is taken as an example, namely ocean wave energy, the annual average power of the wave is estimated to be 1.3 multiplied by 10 by the annual average power of the wave in the theoretical wave of China coastal sea by utilizing the data of a China coastal ocean observation station⁷kw and the actual coastal wave power is greater than the above estimate since the observation site of some of the ocean stations is in a location where the gulf or storm is small. Taking the measurement of water level energy under the marine environment condition as an example, the water level energy, namely wave energy, under the marine environment condition has longitudinal and transverse dual uneven distribution due to guidance of factors such as seabed terrain, temperature and the like during the surging of ocean current in the ocean. Therefore, the traditional ocean energy measuring device cannot accurately measure multiple terrains and cannot obtain continuous comprehensive data.

At present, the conventional water level energy monitoring device mainly uses a wave energy monitoring device, and the device of the type generally calculates the energy of waves by monitoring the thrust of sea waves on a plane. Because the wave fluctuation direction has randomness, the existing monitoring device is difficult to ensure that the measuring surface is opposite to the wave-facing surface, so that part of wave energy is not converted into monitoring data. At present, various types of power generation devices designed and even put into production according to water level energy, mainly according to ocean wave energy, are difficult to reasonably utilize the water level energy due to lack of support of related energy monitoring data. Wave protection design of a sea reclamation construction area vigorously developed in coastal areas requires more accurate ocean energy monitoring data.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a water level energy monitoring system and method based on optical frequency domain reflectometry, which are used to solve the problems in the prior art that the existing device cannot accurately measure water level energy in multiple directions and multiple terrains and cannot obtain continuous comprehensive data due to the randomness of the wave direction.

In order to achieve the above and other related objects, the present invention provides a water level energy monitoring system based on optical frequency domain reflectometry, which can be placed in a water body to monitor and collect water level energy data parameters, including:

a main body frame;

the measuring units are arranged on the main body frame in a surrounding manner and used for measuring water level energy data parameters in different directions, and each measuring unit comprises a horizontal period measuring module, a longitudinal wave amplitude measuring module and a longitudinal flow velocity measuring module;

the transmission terminal is used for transmitting the data parameters acquired by the measurement unit;

and the power supply device supplies power to the whole system.

Optionally, the main body frame includes a transverse frame rod and a longitudinal frame rod, and the transverse frame rod and the longitudinal frame rod are combined to form a cubic structure.

Optionally, the water body structure further comprises an anchoring rod, wherein the anchoring rod is connected with the bottom of the main body frame, and the anchoring rod can be anchored into the bottom of the water body for fixing the position of the main body frame in the water body.

Optionally, the horizontal period measuring module comprises a stress plate and a low coherence interferometry module,

the low coherence interferometry module is fixed on the transverse frame rod, the stress plate is connected with the low coherence interferometry module, and the low coherence interferometry module is located between the transverse frame rod and the stress plate.

Optionally, the low coherence interferometry module comprises a first fixed part, a second fixed part and a sliding part,

the first fixing piece is fixedly connected with the second fixing piece, a sliding rail is arranged on the first fixing piece, the sliding piece is slidably mounted on the first fixing piece, the sliding piece is hinged to the surface of the stress plate, the stress plate drives the sliding piece to slide on the sliding rail through the impact of water flow on the stress plate, and the distance between the second fixing piece and the sliding piece is changed along with the back-and-forth sliding of the sliding piece;

the second fixing piece is connected with the sliding piece through a spring, and a low-coherence interference optical fiber sensor is arranged on the spring;

and a limiting connecting rod structure is arranged between the second fixing piece and the sliding piece, two ends of the limiting connecting rod structure are respectively connected with the sliding piece and the second fixing piece, and the limiting connecting rod structure is used for limiting the sliding stroke of the sliding piece.

Optionally, the longitudinal wave amplitude measuring module comprises a measuring floating ball and a mesh-shaped fixing structure,

the reticular fixed structure is arranged between the transverse frame rod at the top and the transverse frame rod at the bottom, the measuring floating ball is connected with the reticular fixed structure through a flexible optical cable,

an OFDR optical fiber sensor is embedded in the flexible optical cable.

Optionally, the longitudinal flow velocity measurement module comprises a bidirectional cross cylindrical structure and a fixing rod,

the fixing rod is vertically arranged between the top transverse frame rod and the bottom transverse frame rod, the bidirectional cross cylindrical structure is fixed on the fixing rod and is uniformly arranged along the rod length direction of the fixing rod,

the two-way cross cylindrical structure is internally provided with a sheet sensor of OFDR optical fibers.

Optionally, the power supply device is a solar panel.

Optionally, the system further comprises a cloud analysis platform, and the transmission terminal uploads the data parameters acquired by the measurement unit to the cloud analysis platform for calculation and analysis.

A method of utilizing a water level energy monitoring system based on optical frequency domain reflectometry, comprising:

the stress plate in the horizontal period measuring module is impacted by the water flow of the target measuring water body and transmits the impact force to the low-coherence interference measuring module, so that the water level fluctuation period T and the axial strain epsilon optical fiber generated by the water body fluctuation impact load can be measured; the position of a measuring floating ball of the longitudinal wave amplitude measuring module is freely changed in a limited space under the restraint of a flexible optical cable when the measuring floating ball is subjected to the buoyancy of water, the measuring floating ball is freely drooped when the measuring floating ball is not subjected to the buoyancy of water, the fluctuation change condition of a corresponding certain point is collected through the axial tensile stress change of the flexible optical cable, and the longitudinal wave amplitude measuring module can measure the water level wave amplitude A and the wavelength L; the sheet sensor of the OFDR optical fiber of the longitudinal flow velocity measurement module can bear uniform load in the water flow direction, can measure the water flow velocity and reflect the distribution of the flow velocity in a measurement area through multi-point data acquisition, and the longitudinal flow velocity measurement module can measure the water flow wave velocity Vg;

the transmission terminal transmits the relevant parameters collected by each module to the cloud analysis platform for analysis and calculation, potential energy and kinetic energy of the unit wave surface width are added together, the water level energy can be calculated, the water level kinetic energy is the result of superposition of water particle transverse motion and longitudinal motion, and the potential energy and the kinetic energy sum of the water level energy E can be expressed as follows:wherein g is the acceleration of gravity and ρ is the density of water; water level average energy flux or fluctuation period energy P_wComprises the following steps:and the relation between the water level fluctuation period T and the wavelength L:so P_wIt can also be expressed as:shock in water body wavesThe load F is: f ═ E ∈_{Optical fiber}。

As described above, the water level energy monitoring system and method based on optical frequency domain reflectometry of the present invention at least have the following beneficial effects:

the water level energy monitoring system based on the optical frequency domain reflection measurement technology is provided with a plurality of measurement units, can measure water level energy data parameters in different directions in a water body, can collect and determine data parameters in a target water level relatively comprehensively, is provided with a horizontal period measurement module, a longitudinal wave amplitude measurement module and a longitudinal flow velocity measurement module in each measurement unit, can directly measure data parameter quantity required by a water level fluctuation theoretical formula through the optical frequency domain reflection measurement technology, can reflect the numerical value of the water level energy at high precision, can transmit the collected data to a cloud analysis platform through a transmission terminal for analysis and calculation, and can accurately calculate the water level energy value of the required target water level; meanwhile, the system provided by the invention is operated by power supplied by the solar cell panel, and external energy supply equipment is not required, so that the system is more green and energy-saving.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a water level energy monitoring system based on optical frequency domain reflectometry in the present invention;

FIG. 2 is a schematic view showing the arrangement of the measuring unit according to the present invention (the two-way cross tubular structure is removed);

FIG. 3 is a schematic diagram of a low coherence interferometry module of the present invention;

FIG. 4 is a schematic diagram of the connection between the low coherence interferometry module and the force-bearing plate of the present invention;

FIG. 5 is a schematic view of the arrangement of the measuring ball float according to the present invention;

FIG. 6 is a schematic structural diagram of a bidirectional cross tubular structure according to the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.

Referring to fig. 1, the present invention provides a water level energy monitoring system based on optical frequency domain reflectometry, which can be placed in a water body to monitor and collect water level energy data parameters, including: the device comprises a main body frame, at least four measuring units, a transmission terminal 1 and a power supply device 2, wherein each measuring unit is arranged on the main body frame in a surrounding mode and used for measuring water level energy data parameters in different directions, and each measuring unit comprises a horizontal period measuring module, a longitudinal wave amplitude measuring module and a longitudinal flow velocity measuring module; the transmission terminal 1 is used for transmitting the data parameters acquired by the measurement unit, and the detection units are connected with the transmission terminal 1 through signal cables to realize data transmission; the power supply device 2 supplies power to the whole system. The water level energy monitoring system based on the optical frequency domain reflection measurement technology is provided with a plurality of measurement units, can measure water level energy data parameters in different directions in a target water body, can collect and determine the data parameters in the target water level relatively comprehensively, is provided with three measurement modules including a horizontal period measurement module, a longitudinal wave amplitude measurement module and a longitudinal flow velocity measurement module in each measurement unit, is respectively used for detecting and collecting a water level fluctuation period, a water level wave amplitude, a water level wavelength, a water wave flow velocity and the like in the target water body, directly measures the data parameter quantity required by a water level fluctuation theoretical formula through the optical frequency domain reflection measurement technology, and can calculate the value of the water level energy by using the collected data parameters with high precision.

In this embodiment, referring to fig. 1, the main body frame includes a transverse frame rod 31 and a longitudinal frame rod 32, the transverse frame rod 31 and the longitudinal frame rod 32 may be made of a carbon fiber material, and may not be corroded by a use environment under a condition that the overall strength and stability of the apparatus are sufficient, the transverse frame rod 31 and the longitudinal frame rod 32 are combined to form a cubic structure, and the measuring units may be installed on four sides of the main body frame to collect water level energy data parameters in four directions in a target water body.

In this embodiment, please refer to fig. 1, further comprising an anchor rod 33, wherein the anchor rod 33 is connected to the bottom of the main body frame, and the anchor rod 33 can be anchored into the bottom of the water body for fixing the position of the main body frame in the water body. When the integral device is placed in a water body, in order to avoid the situation that the measured data is inaccurate because the integral device cannot be kept and determined along with wave drifting positions due to the impact of water waves and water flows, the anchoring rod 33 is inserted into the bottom of the water body, so that the whole device is ensured to be relatively static relative to the ground bottom surface of a target water body in the measuring process, the relative error of measurement can be reduced, and the measured data is more accurate.

In this embodiment, referring to fig. 1 to 4, the horizontal period measuring module includes a stress plate 41 and a low coherence interferometry module 42, where both housings of the stress plate 41 and the low coherence interferometry module 42 can be made of a carbon fiber material by an additive manufacturing technique to meet the structural requirement of strength of measurement and protect them from erosion of the use environment, the low coherence interferometry module 42 is fixed on the transverse frame rod 31, the stress plate 41 is connected with the low coherence interferometry module 42, and the low coherence interferometry module 42 is located between the transverse frame rod 31 and the stress plate 41. The low coherence interferometry module 42 comprises a first fixed part 421, a second fixed part 422 and a sliding part 423, wherein the first fixed part 421 and the second fixed part 422 are fixedly connected, a sliding track 4211 is arranged on the first fixed part 421, the sliding part 423 is slidably mounted on the first fixed part 421, the sliding part 423 is hinged to the four corners of the surface of the stress plate 41, the spherical part of a hinge joint 427 is rigidly connected to the sliding part 423, the connecting part of the hinge joint 427 and the stress plate 41 is in a flat section shape, the stress plate 41 drives the sliding part 423 to slide on the sliding track 4211 by the impact of water flow on the stress plate 41, the distance between the second fixed part 422 and the sliding part 423 changes along with the back-and-forth sliding of the sliding part 423, and the low coherence interferometry module is applied at a very small node, the area of the stress plate 41 is larger, so that a wider impact action can be obtained by the stress plate 41 being impacted; the second fixing part 422 is connected with the sliding part 423 through a spring 424, a low-coherence interference optical fiber sensor 425 is arranged on the spring 424, and water impacts the stress plate 41 to drive the sliding part 423 to slide to compress or stretch the spring 424, so that the low-coherence interference optical fiber sensor 425 can acquire data; a limiting link structure 426 is arranged between the second fixing part 422 and the sliding part 423, two ends of the limiting link structure 426 are respectively connected with the sliding part 423 and the second fixing part 422, and the limiting link structure 426 is used for limiting the sliding stroke of the sliding part 423.

In this embodiment, referring to fig. 1, fig. 2 and fig. 5, the longitudinal wave amplitude measurement module includes a measurement floating ball 51 and a mesh-shaped fixing structure 52, the mesh-shaped fixing structure 52 may be made of a carbon fiber material by an additive manufacturing technique, the mesh-shaped fixing structure 52 is disposed between the top transverse frame rod 31 and the bottom transverse frame rod 31, the measurement floating ball 51 is connected to the mesh-shaped fixing structure 52 through a flexible optical cable 53, an OFDR optical fiber sensor is embedded in the flexible optical cable 53, and the OFDR is an optical frequency domain reflectometer, and can be applied to high-precision measurement in various ranges and has a large dynamic range. The measuring float 51 has a degree of freedom in a certain space when it is affected by a change in buoyancy due to a change in water level. The stress condition of the flexible optical cable 53 can be obviously changed due to the change, so that the water level amplitude change information can be accurately collected, and the fluctuation condition of the water level can be comprehensively reflected in a three-dimensional mode through multi-dimensional multi-point collection.

In this embodiment, referring to fig. 1 and 6, the longitudinal flow velocity measurement module includes a bidirectional cross cylindrical structure 61 and a fixing rod 62, the bidirectional cross cylindrical structure 61 and the fixing rod 62 may be made of a carbon fiber material by an additive manufacturing technique, the fixing rod 62 is vertically disposed between the top transverse frame rod 31 and the bottom transverse frame rod 31, the bidirectional cross cylindrical structure 61 is fixed on the fixing rod 62, the bidirectional cross cylindrical structure 61 is uniformly arranged along the rod length direction of the fixing rod 62, and a sheet sensor 63 of an OFDR optical fiber is disposed inside the bidirectional cross cylindrical structure 61. The flow velocity condition is reflected by measuring the acting force of water bodies with different flow velocities, and the flow velocity distribution condition of the water bodies is comprehensively reflected in a three-dimensional manner by multi-dimensional multi-point arrangement in the system.

In this embodiment, the power supply device 2 is a solar panel. Solar energy conversion is utilized to the electric energy under the condition that the water is wide and not sheltered from to the abundant utilization of solar cell panel for the whole electric energy that provides of device, need not plus energy supply equipment, more green energy-conserving.

In this embodiment, the system further comprises a cloud analysis platform, and the transmission terminal 1 uploads the data parameters acquired by the measurement unit to the cloud analysis platform through 5G transmission for calculation and analysis.

In this embodiment, a method for using a water level energy monitoring system based on an optical frequency domain reflectometry technique includes: the stress plate 41 in the horizontal period measuring module is impacted by the water flow of the target measuring water body and transmits the impact force to the low-coherence interferometry module 42, so that the water level fluctuation period T and the axial strain epsilon generated by the water body fluctuation impact load can be measured_{Optical fiber}(ii) a The position of a measuring floating ball 51 of the longitudinal wave amplitude measuring module is freely changed in a limited space under the restraint of a flexible optical cable 53 when the measuring floating ball is subjected to the buoyancy of water, the measuring floating ball is freely drooped when the measuring floating ball is not subjected to the buoyancy of water, the fluctuation change condition of a corresponding certain point is collected through the axial tensile stress change of the flexible optical cable 53, and the water level wave amplitude A and the wavelength L can be measured by the longitudinal wave amplitude measuring module; the sheet sensor 63 of the OFDR optical fiber of the longitudinal flow velocity measurement module can bear the uniform load in the flow direction, can measure the flow velocity and react the distribution of the flow velocity in the measurement area through multi-point data acquisition, and the longitudinal flow velocity measurement module can measure the flow wave velocity V_g；

Transmission terminal 1 transmits the relevant parameter that each module was gathered to high in the clouds analysis platform and carries out the analytical computation, adds potential energy and the kinetic energy of unit wave surface width together, just can calculate the water level energy, and water level kinetic energy is the superimposed result of water particle lateral motion and longitudinal motion, and the potential energy and the kinetic energy sum of water level energy E can be expressed as:wherein g is the acceleration of gravity and ρ is the density of water; water level average energy flux or fluctuation period energy P_wComprises the following steps:and the relation between the water level fluctuation period T and the wavelength L:so P_wIt can also be expressed as:the impact load F in the water wave is: f ═ E ∈_{Fiber plugging}。

In summary, the invention provides a water level energy monitoring system and method based on optical frequency domain reflection measurement technology, the invention sets up a plurality of measurement units, which can measure water level energy data parameters in different directions in a water body, can collect and determine data parameters in a target water level relatively comprehensively, and each measurement unit is provided with a horizontal period measurement module, a longitudinal wave amplitude measurement module and a longitudinal flow velocity measurement module, and the data parameter quantity required by a water level fluctuation theoretical formula is directly measured by the optical frequency domain reflection measurement technology, so that the numerical value of the water level energy can be reflected with high precision, and meanwhile, the collected data can be uploaded to a cloud analysis platform through a transmission terminal for analysis and calculation, so that the water level energy value of the required target water level can be accurately calculated; meanwhile, the system provided by the invention is operated by power supplied by the solar cell panel, and external energy supply equipment is not required, so that the system is more green and energy-saving. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.