Method, device and equipment for detecting icing thickness of OPGW (Optical Fiber Composite Overhead Ground Wire) optical cable and storage medium

Abstract

The invention relates to the technical field of optical cable monitoring, and discloses an OPGW optical cable icing thickness detection method, device and equipment and a storage medium, which are used for improving the accuracy of icing thickness detection. The method for detecting the icing thickness of the OPGW optical cable comprises the steps that the first vibration frequency of the OPGW optical cable is obtained, the first vibration frequency is the inherent frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained through analysis according to preset audio data; collecting target audio data of the OPGW optical cable in the current state; performing analysis according to the target audio data to obtain a second vibration frequency, the second vibration frequency being an inherent frequency of the OPGW optical cable in the current state; judging whether the current state is an icing state or not based on the first vibration frequency and the second vibration frequency; and if yes, calculating the icing thickness of the OPGW according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the ice density of the OPGW.

Description

Technical Field

[0001] The present invention relates to the field of optical cable monitoring technology, and in particular to a method, device, equipment and storage medium for detecting ice thickness of an OPGW optical cable. Background Art

[0002] The current ice thickness detection technology for OPGW optical cables mainly relies on sensors to collect environmental data, and uses computational models to analyze the collected environmental data to evaluate the ice situation. However, in actual applications, when in severe weather conditions, the data collected by sensors are easily interfered with, resulting in data deviation. At the same time, low temperature and high humidity environments can easily cause equipment damage. In addition, due to the complex and changeable ice conditions, it is difficult for computational models to fully consider the influencing factors. All of the above reasons will lead to inaccurate ice thickness detection results. Summary of the invention

[0003] The present invention provides a method, device, equipment and storage medium for detecting ice thickness of an OPGW optical cable, so as to solve the problem that the ice thickness detection result in the prior art is not accurate enough.

[0004] A first aspect of the present invention provides a method for detecting ice thickness of an OPGW optical cable, comprising: obtaining a first vibration frequency of the OPGW optical cable, the first vibration frequency being the natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency being obtained by analyzing preset audio data; collecting target audio data of the OPGW optical cable in a current state; performing analysis based on the target audio data to obtain a second vibration frequency, the second vibration frequency being the natural frequency of the OPGW optical cable in the current state; determining whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency; if so, calculating the ice thickness of the OPGW optical cable based on the bare wire unit mass of the OPGW optical cable, the initial radius, the first vibration frequency, the second vibration frequency, and the density of ice.

[0005] In a feasible implementation manner, the ice coating thickness of the OPGW optical cable is calculated according to the bare wire unit mass of the OPGW optical cable, the initial radius, the first vibration frequency, the second vibration frequency and the ice density, including: calculating the unit mass of ice when the OPGW optical cable is iced according to the bare wire unit mass of the OPGW optical cable, the first vibration frequency and the second vibration frequency; calculating the ice coating thickness of the OPGW optical cable based on the unit mass of the ice, the density of the ice and the initial radius of the OPGW optical cable.

[0006] In a feasible implementation manner, the ice coating thickness of the OPGW optical cable is calculated according to the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable, including: substituting the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable into a target formula for calculation to obtain the ice coating thickness of the OPGW optical cable, and the target formula is:

[0007]

[0008] Wherein, d is the ice thickness, m0 is the bare wire unit mass of the OPGW optical cable, f0 is the first vibration frequency, and f i is the second vibration frequency, ρ i is the density of ice, and r is the initial radius of the OPGW optical cable.

[0009] In a feasible implementation manner, the analyzing according to the target audio data to obtain the second vibration frequency includes: performing a fast Fourier transform on the target audio data to obtain target spectrum data corresponding to the target audio data; generating a target spectrum graph according to the target spectrum data, the target spectrum graph including a target spectrum of the OPGW optical cable in the current state; and calculating the second vibration frequency of the OPGW optical cable in the current state based on the target spectrum graph.

[0010] In a feasible implementation manner, the calculation of the second vibration frequency of the OPGW optical cable in the current state based on the target spectrum graph includes: identifying the target maximum harmonic peak-to-peak value of the OPGW optical cable in the current state from the target spectrum graph; and calculating the second vibration frequency based on the target maximum harmonic peak-to-peak value.

[0011] In a feasible implementation manner, calculating the second vibration frequency according to the target maximum harmonic peak-to-peak value includes: calculating the current vibration frequency according to the target maximum harmonic peak-to-peak value; and correcting the current vibration frequency according to a temperature compensation mechanism to obtain the second vibration frequency.

[0012] In a feasible implementation manner, after calculating the ice coating thickness of the OPGW optical cable according to the bare wire unit mass of the OPGW optical cable, the initial radius, the first vibration frequency, the second vibration frequency and the ice density, it also includes: determining the ice coating level to which the ice coating thickness belongs; and performing corresponding de-icing operations according to the ice coating level.

[0013] A second aspect of the present invention provides an OPGW optical cable ice thickness detection device, comprising: an acquisition module, used to acquire a first vibration frequency of the OPGW optical cable, the first vibration frequency being the natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency being obtained by analyzing preset audio data; an acquisition module, used to acquire target audio data of the OPGW optical cable in a current state; an analysis module, used to analyze the target audio data to obtain a second vibration frequency, the second vibration frequency being the natural frequency of the OPGW optical cable in the current state; a first judgment module, used to judge whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency; and a calculation module, used to, if so, calculate the ice thickness of the OPGW optical cable according to the bare wire unit mass of the OPGW optical cable, the initial radius, the first vibration frequency, the second vibration frequency and the density of ice.

[0014] In a feasible implementation manner, the calculation module is specifically used to: calculate the unit mass of ice when the OPGW optical cable is covered with ice according to the unit mass of the bare wire of the OPGW optical cable, the first vibration frequency and the second vibration frequency; calculate the ice thickness of the OPGW optical cable based on the unit mass of the ice, the density of the ice and the initial radius of the OPGW optical cable.

[0015] In a feasible implementation manner, the calculation module is further specifically used to: substitute the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable into the target formula for calculation to obtain the ice coating thickness of the OPGW optical cable, and the target formula is:

[0016]

[0017] Where d is the ice thickness, m0 is the bare wire unit mass of the OPGW optical cable, f0 is the first vibration frequency, f i is the second vibration frequency, ρ i is the density of ice, and r is the initial radius of the OPGW optical cable.

[0018] In a feasible implementation, the analysis module includes: a processing unit, used to perform a fast Fourier transform on the target audio data to obtain target spectrum data corresponding to the target audio data; a generation unit, used to generate a target spectrum graph according to the target spectrum data, wherein the target spectrum graph includes a target spectrum of the OPGW optical cable in the current state; and a calculation unit, used to calculate a second vibration frequency of the OPGW optical cable in the current state based on the target spectrum graph.

[0019] In a feasible implementation, the calculation unit includes: an identification subunit, used to identify the target maximum harmonic peak-to-peak value of the OPGW optical cable in the current state from the target spectrum diagram; and a calculation subunit, used to calculate the second vibration frequency based on the target maximum harmonic peak-to-peak value.

[0020] In a feasible implementation manner, the calculation subunit is specifically used to: calculate the current vibration frequency according to the target maximum harmonic peak-to-peak value; and correct the current vibration frequency according to a temperature compensation mechanism to obtain a second vibration frequency.

[0021] In a feasible implementation manner, the OPGW optical cable ice thickness detection device further includes: a second judgment module, used to judge the ice coating level to which the ice coating thickness belongs; and a deicing module, used to perform a corresponding deicing operation according to the ice coating level.

[0022] A third aspect of the present invention provides an OPGW optical cable ice thickness detection device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor calls the instructions in the memory so that the OPGW optical cable ice thickness detection device performs the above-mentioned OPGW optical cable ice thickness detection method.

[0023] A fourth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned method for detecting ice thickness of an OPGW optical cable.

[0024] In the technical solution provided by the present invention, the first vibration frequency of the OPGW optical cable is obtained, the first vibration frequency is the natural frequency of the OPGW optical cable in the bare wire state, the first vibration frequency is obtained by analyzing the preset audio data, the target audio data of the OPGW optical cable in the current state is collected, and the second vibration frequency is obtained by analyzing the target audio data, the second vibration frequency is the natural frequency of the OPGW optical cable in the current state, and the current state is judged based on the first vibration frequency and the second vibration frequency. If so, the ice thickness of the OPGW optical cable is calculated according to the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable. In the embodiment of the present invention, by collecting the audio data of the OPGW optical cable and calculating the corresponding vibration frequency, the vibration frequency of the OPGW optical cable in the bare wire state and the current state is compared, and the ice thickness is calculated in real time in combination with the principles of physical mechanics, the traditional monitoring technology effectively solves the problems of data being easily interfered, equipment being easily damaged and monitoring results being inaccurate in bad weather, and improves the accuracy and reliability of ice thickness detection of the OPGW optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of an embodiment of a method for detecting ice thickness of an OPGW optical cable in an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of another embodiment of the method for detecting ice thickness of an OPGW optical cable in an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of an embodiment of an OPGW optical cable ice thickness detection device according to an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of another embodiment of the ice thickness detection device for OPGW optical cable in an embodiment of the present invention;

[0029] Figure 5 It is a schematic diagram of an embodiment of an OPGW optical cable ice thickness detection device in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The embodiment of the present invention provides a method, device, equipment and storage medium for detecting ice thickness of an OPGW (Optical Fiber Composite Overhead Ground Wire) optical cable, which improves the accuracy of ice thickness detection results through vibration frequency analysis and physical parameter calculation.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] It is understandable that the execution subject of the present invention may be an OPGW optical cable ice thickness detection device, or a terminal or a server, which is not limited here. The embodiment of the present invention is described by taking a server as the execution subject as an example.

[0033] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the method for detecting ice thickness of an OPGW optical cable in an embodiment of the present invention includes:

[0034] 101. Obtain a first vibration frequency of the OPGW optical cable, where the first vibration frequency is a natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained by analyzing preset audio data;

[0035] The preset audio data is collected in advance. The audio data of the OPGW optical cable in the bare wire state is collected by using a distributed fiber optic acoustic wave sensing device based on a phase-sensitive optical time-domain reflectometer (φ-OTDR) to obtain the preset audio data. The preset audio data is subjected to spectrum analysis by using spectrum analysis technology to calculate the natural frequency of the OPGW optical cable in the bare wire state to obtain the first vibration frequency. The first vibration frequency is stored in a preset database. When ice thickness detection is required, the first vibration frequency is obtained from the database.

[0036] 102. Collect target audio data of the OPGW optical cable in the current state;

[0037] The φ-OTDR device is used to send laser pulses and receive the optical signal returned by the OPGW optical cable. The phase sensitivity of the φ-OTDR technology is used to convert the optical signal into target audio data representing the vibration of the OPGW optical cable. The φ-OTDR device includes but is not limited to DAS (Distributed Acoustic Sensing) equipment and DVS (Distributed Optical Fiber Vibration Sensing System). In this embodiment, DAS equipment is preferably used.

[0038] The φ-OTDR technology injects continuous laser pulses into the optical cable and monitors the Rayleigh scattered light generated by the interaction of these pulses with the surrounding environment when propagating in the OPGW optical cable. These scattered lights carry the vibration and sound information of the surrounding environment along the OPGW optical cable (including the OPGW optical cable itself). During the acquisition process, the high-sensitivity receiver of the φ-OTDR device will capture and analyze these scattered light signals and convert them into time-series audio data. These audio data not only contain the sound of the environment around the OPGW optical cable, but also reflect the tiny vibrations of the OPGW optical cable itself caused by environmental factors, including but not limited to wind, temperature changes and ice.

[0039] To ensure the accuracy and reliability of the data, the appropriate sampling rate and sampling duration can be set to ensure that sufficient audio information can be captured for subsequent analysis; in addition, the φ-OTDR device can be automatically calibrated and noise suppressed to reduce the impact of environmental noise and other non-target signals on the audio data.

[0040] 103. Analyze the target audio data to obtain a second vibration frequency, where the second vibration frequency is the natural frequency of the OPGW optical cable in the current state;

[0041] The target audio data is preprocessed to obtain preprocessed target audio data; and the preprocessed target audio data in the time domain is converted from a time domain signal to a frequency domain signal representation using spectrum analysis technology to obtain a target frequency domain signal; the amplitude and phase information of the target frequency domain signal at different frequencies is obtained through Fourier transform to form a target spectrum diagram; according to the peak value, valley value and other characteristics in the target spectrum diagram, the natural frequency of the OPGW optical cable in the current state is determined to obtain the second vibration frequency.

[0042] The target audio data is processed by fast Fourier transform (FFT) using spectrum analysis software. FFT is a mathematical method that converts time domain signals into frequency domain signals, which can reveal the intensity and distribution of different frequency components in the audio signal. Through FFT processing, the target audio data is converted into a target spectrum and a target spectrum diagram is generated. The target spectrum reflects the frequency distribution characteristics of the OPGW optical cable in its current state.

[0043] 104. Determine whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency;

[0044] The first vibration frequency is compared with the second vibration frequency, and if the second vibration frequency is less than the first vibration frequency, it is determined that the current state is an ice-covered state.

[0045] Subtract the first vibration frequency from the second vibration frequency to obtain a first difference. If the first difference is less than zero, it is determined that the second vibration frequency is less than the first vibration frequency. If the first difference is not less than zero, it is determined that the second vibration frequency is not less than the first vibration frequency. When the second vibration frequency is less than the first vibration frequency, it is determined that the current state is an ice-covered state. When the second vibration frequency is not less than the first vibration frequency, it is determined that the current state is not an ice-covered state.

[0046] 105. If yes, the ice thickness of the OPGW optical cable is calculated according to the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable.

[0047] The unit mass of ice when the OPGW cable is covered with ice is calculated according to the bare wire unit mass, the first vibration frequency and the second vibration frequency of the OPGW cable, wherein the ice-covered unit mass of the OPGW cable is calculated according to the bare wire unit mass, the first vibration frequency and the second vibration frequency of the OPGW cable, and the unit mass of ice when the OPGW cable is covered with ice is calculated according to the ice-covered unit mass of the OPGW cable and the bare wire unit mass; the ice-covered thickness of the OPGW cable is calculated based on the unit mass of ice, the density of ice and the initial radius of the OPGW cable. The unit mass represents the mass per unit length, for example, the bare wire unit mass, the ice-covered unit mass and the unit mass of ice when covered with ice of the OPGW cable can respectively represent the mass of each meter of the OPGW cable in the bare wire state, the mass of each meter of the OPGW cable in the ice-covered state and the mass of ice on each meter of the OPGW cable in the ice-covered state, wherein the mass of each meter of the OPGW cable in the ice-covered state is the mass of each meter of the OPGW cable in the bare wire state plus the mass of ice on each meter of the OPGW cable in the ice-covered state.

[0048] Define the relevant parameters of OPGW optical cable: the length of OPGW optical cable is L, the span length is l, the span length refers to the length of the connecting line of the fixed points at both ends of the OPGW optical cable, h is the vertical distance from the connecting line of the fixed points at both ends of the OPGW optical cable to the lowest point of the OPGW optical cable sag arc, and T is the horizontal tension of the OPGW optical cable.

[0049] The horizontal tension T can be calculated by the first formula, which is: Where m is the mass of the OPGW cable; the natural frequency of the OPGW cable can be expressed as: Where k is the vibration order; the first vibration frequency of the OPGW optical cable in the bare wire state can be calculated by the second formula, which is: Among them, f0 is the first vibration frequency, T0 is the horizontal tension of the OPGW optical cable in the bare wire state, and m0 is the bare wire unit mass of the OPGW optical cable in the bare wire state; the second vibration frequency of the OPGW optical cable in the ice-covered state can be calculated by the third formula, which is: Among them, f i is the second vibration frequency, T i is the horizontal tension of OPGW optical cable under ice-covered condition, m t is the ice-covered unit mass of the OPGW optical cable in the ice-covered state; the ice-covered unit mass of the OPGW optical cable can be calculated by the fourth formula, which is: m t =m0+m i , where m iis the unit mass of ice when the OPGW optical cable is covered with ice; since the change of horizontal tension has little effect on the calculation process, its change can be ignored. Therefore, the fifth formula can be obtained according to the second formula, the third formula and the fourth formula. The fifth formula is: The unit mass of ice on OPGW optical cable when covered with ice can be calculated using the sixth formula: m i =πρ i d(2r+d), where ρ i is the density of ice, r is the initial radius of the OPGW cable, and d is the thickness of ice. i and m0 are known data, so m can be calculated according to the fifth formula i The value of ρ i and r are the data measured in advance, so the calculated m i Substituting the value into the sixth formula can calculate the ice thickness d of the OPGW optical cable.

[0050] In the embodiment of the present invention, the first vibration frequency of the OPGW optical cable is obtained, the target audio data of the OPGW optical cable in the current state is collected, and the second vibration frequency is obtained by analysis based on the target audio data. It is determined whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency. If so, the ice-covered thickness of the OPGW optical cable is calculated based on the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable. By comparing the vibration frequencies of the OPGW optical cable in the bare wire state and the current state, the accurate identification of the ice-covered state is achieved, and the scientific ice-covered thickness calculation is performed in combination with the physical parameters of the OPGW optical cable, which effectively improves the accuracy and reliability of the ice-covered thickness detection results.

[0051] See also Figure 2 Another embodiment of the method for detecting ice thickness of an OPGW optical cable in the embodiment of the present invention includes:

[0052] 201. Obtain a first vibration frequency of the OPGW optical cable, where the first vibration frequency is a natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained by analyzing preset audio data;

[0053] 202. Collect target audio data of the OPGW optical cable in a current state;

[0054] The execution process of steps 201 and 202 is similar to the execution process of steps 101 and 102, and will not be repeated here.

[0055] 203. Perform fast Fourier transform according to the target audio data to obtain target spectrum data corresponding to the target audio data;

[0056] The target audio data is preprocessed, including denoising, filtering, normalization, etc., to ensure the quality of the target audio signal and the accuracy of the analysis; the preprocessed target audio data is subjected to fast Fourier transform to convert the preprocessed target audio data from the time domain to the frequency domain. This process decomposes the audio signal into sinusoidal wave components of different frequencies, and the amplitude and phase information of each component is recorded, thereby constituting the target spectrum data corresponding to the target audio data.

[0057] 204. Generate a target spectrum diagram according to the target spectrum data, where the target spectrum diagram includes a target spectrum of the OPGW optical cable in a current state;

[0058] Select the frequency range and resolution of the spectrum graph according to the analysis requirements, and calculate the signal strength corresponding to each frequency component, usually the absolute value or square value of the amplitude. Use drawing software or library to create a two-dimensional graph as the target spectrum graph, where the horizontal axis represents frequency and the vertical axis represents signal strength. Draw the corresponding curve or bar graph on the graph based on the calculated target spectrum data, add necessary annotations to the target spectrum graph, such as frequency scale, signal strength unit, title, etc., and interpret the key features in the target spectrum graph according to the characteristics of the OPGW optical cable and the analysis objectives.

[0059] 205. Based on the target frequency spectrum, calculate the second vibration frequency of the OPGW optical cable in the current state;

[0060] The target maximum harmonic peak-to-peak value of the OPGW optical cable in the current state is identified from the target spectrum diagram; and the second vibration frequency is calculated according to the target maximum harmonic peak-to-peak value.

[0061] The execution steps of calculating the second vibration frequency according to the target maximum harmonic peak-to-peak value are: calculating the current vibration frequency according to the target maximum harmonic peak-to-peak value; and correcting the current vibration frequency according to the temperature compensation mechanism to obtain the second vibration frequency.

[0062] The target maximum harmonic peak-to-peak value of the OPGW optical cable in the current state is automatically located from the target spectrum diagram through the peak detection algorithm. The peak detection algorithm includes a peak detection algorithm based on a preset threshold and a peak detection algorithm based on mathematical morphology. The algorithm can identify and mark the harmonic peak with the highest energy in the spectrum diagram, and calculate the current vibration frequency corresponding to the target maximum harmonic peak-to-peak value according to the centroid method or the phase difference method.

[0063] The first ambient temperature when collecting preset audio data, the second ambient temperature when collecting target audio data, and the thermal expansion coefficient of the corresponding material of the OPGW optical cable are obtained, and the target temperature difference between the second ambient temperature and the first ambient temperature is calculated. The target temperature difference and the thermal expansion coefficient are input into the temperature compensation model to obtain the frequency correction parameters, and the second vibration frequency is calculated according to the frequency correction parameters and the current vibration frequency.

[0064] By integrating the peak detection algorithm with the temperature compensation mechanism, the vibration frequency information of the OPGW optical cable can be automatically and accurately extracted from the target spectrum diagram. By identifying and calculating the vibration frequency corresponding to the target maximum harmonic peak-to-peak value in the current state and taking into account the influence of ambient temperature changes on the frequency, the accuracy and reliability of the vibration frequency measurement are effectively improved.

[0065] 206. Determine whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency;

[0066] When the second vibration frequency is less than the first vibration frequency and a preset ice-covering frequency threshold, it is determined that the current state is an ice-covering state.

[0067] Subtract the first vibration frequency from the second vibration frequency to obtain a first difference. If the first difference is less than zero, it is determined that the second vibration frequency is less than the first vibration frequency. Subtract the preset ice-covering frequency threshold from the second vibration frequency to obtain a second difference. If the second difference is less than zero, it is determined that the second vibration frequency is less than the ice-covering frequency threshold. If the second vibration frequency is less than the first vibration frequency and less than the preset ice-covering frequency threshold, it is determined that the current state is an ice-covered state; otherwise, it is determined that the current state is not an ice-covered state.

[0068] The second vibration frequency is compared with the first vibration frequency and the ice-covering frequency threshold respectively, and the ice-covering state is determined through double judgment, which effectively improves the accuracy of ice-covering state judgment.

[0069] 207. If yes, the ice thickness of the OPGW optical cable is calculated according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the ice density of the OPGW optical cable;

[0070] Substitute the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable into the target formula for calculation to obtain the ice thickness of the OPGW optical cable. The target formula is:

[0071]

[0072] Where d is the ice thickness, m0 is the bare wire unit mass of the OPGW optical cable, f0 is the first vibration frequency, and f i is the second vibration frequency, ρ i is the density of ice, and r is the initial radius of the OPGW optical cable.

[0073] The quality and initial radius of the OPGW optical cable in the bare wire state are measured in advance and stored in the optical cable information library. When the data needs to be obtained, the extraction address is determined based on the extraction instruction, and the corresponding data is extracted from the optical cable information library according to the extraction address.

[0074] Since m0, f0, f i , i and r are known data, so the ice thickness d of the OPGW optical cable can be calculated according to the target formula.

[0075] 208. Determine the ice level to which the ice thickness belongs;

[0076] Compare the ice thickness with the preset ice grade classification table; if the ice thickness is in the first ice range, the OPGW optical cable is determined to be lightly iced; if the ice thickness is in the second ice range, the OPGW optical cable is determined to be moderately iced; if the ice thickness is in the third ice range, the OPGW optical cable is determined to be heavily iced.

[0077] The ice coverage level classification table divides the ice coverage thickness into different intervals, and each interval corresponds to an ice coverage level. For example: the first ice coverage range: [0mm, 5mm], corresponding to light ice coverage; the second ice coverage range: (5mm, 15mm], corresponding to moderate ice coverage; the third ice coverage range: (15mm, +∞), corresponding to heavy ice coverage.

[0078] 209. Perform corresponding de-icing operations according to the ice coverage level.

[0079] A corresponding de-icing instruction is generated according to the ice coverage level, and the de-icing instruction includes a de-icing range and a de-icing intensity; and the de-icing equipment is controlled to perform a de-icing operation based on the de-icing instruction.

[0080] When the ice coverage level of the OPGW optical cable is judged to be mild, moderate or severe, the corresponding de-icing instructions are immediately formulated and generated according to the corresponding level. The de-icing instructions specify the de-icing range and de-icing intensity in detail. The de-icing range indicates the specific optical cable section that needs to be cleaned, and the de-icing intensity indicates the working mode and power level that the de-icing equipment should adopt; based on the de-icing instructions, the de-icing equipment is driven to perform de-icing operations according to the preset parameters, covering the designated area and removing the ice. During the de-icing process, the effect is continuously monitored to ensure that the ice is effectively removed, and the de-icing strategy is adjusted when necessary. When the de-icing operation is completed, the de-icing equipment is turned off, and the entire de-icing process and its results are recorded to provide feedback and optimization basis for subsequent work.

[0081] In an embodiment of the present invention, the first vibration frequency of the OPGW optical cable is obtained, the target audio data of the OPGW optical cable in the current state is collected, a fast Fourier transform is performed according to the target audio data, the target spectrum data corresponding to the target audio data is obtained, and a target spectrum diagram is generated according to the target spectrum data, the target spectrum diagram includes the target spectrum of the OPGW optical cable in the current state, and the second vibration frequency of the OPGW optical cable in the current state is calculated based on the target spectrum diagram, and whether the current state is an ice-covered state is determined based on the first vibration frequency and the second vibration frequency. If so, the ice-covered thickness of the OPGW optical cable is calculated according to the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable, and the ice-covered level to which the ice-covered thickness belongs is determined, and the corresponding deicing operation is performed according to the ice-covered level. By comparing the vibration frequencies of the OPGW optical cable in the bare wire state and the current state, the accurate identification of the ice-covered state is realized, and the scientific calculation of the ice-covered thickness is performed in combination with the physical parameters of the OPGW optical cable, which effectively improves the accuracy and reliability of the ice-covered thickness detection result, and the deicing operation is performed based on the ice-covered level judgment and the judgment result, thereby ensuring the safe and stable operation of the OPGW optical cable.

[0082] The above describes the ice thickness detection method of the OPGW optical cable in the embodiment of the present invention. The following describes the ice thickness detection device of the OPGW optical cable in the embodiment of the present invention. Figure 3 In one embodiment of the present invention, an OPGW optical cable ice thickness detection device comprises:

[0083] An acquisition module 301 is used to acquire a first vibration frequency of the OPGW optical cable, where the first vibration frequency is a natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained by analyzing preset audio data;

[0084] The acquisition module 302 is used to acquire target audio data of the OPGW optical cable in the current state;

[0085] An analysis module 303 is used to analyze the target audio data to obtain a second vibration frequency, where the second vibration frequency is the natural frequency of the OPGW optical cable in the current state;

[0086] A first determination module 304, configured to determine whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency;

[0087] The calculation module 305 is used to calculate the ice coating thickness of the OPGW optical cable according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the ice density of the OPGW optical cable.

[0088] In the embodiment of the present invention, the first vibration frequency of the OPGW optical cable is obtained, the target audio data of the OPGW optical cable in the current state is collected, and the second vibration frequency is obtained by analysis based on the target audio data. It is determined whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency. If so, the ice-covered thickness of the OPGW optical cable is calculated based on the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable. By comparing the vibration frequencies of the OPGW optical cable in the bare wire state and the current state, the accurate identification of the ice-covered state is achieved, and the scientific ice-covered thickness calculation is performed in combination with the physical parameters of the OPGW optical cable, which effectively improves the accuracy and reliability of the ice-covered thickness detection results.

[0089] See also Figure 4 Another embodiment of the ice thickness detection device for OPGW optical cable in the embodiment of the present invention includes:

[0090] An acquisition module 301 is used to acquire a first vibration frequency of the OPGW optical cable, where the first vibration frequency is a natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained by analyzing preset audio data;

[0091] The acquisition module 302 is used to acquire target audio data of the OPGW optical cable in the current state;

[0092] An analysis module 303 is used to analyze the target audio data to obtain a second vibration frequency, where the second vibration frequency is the natural frequency of the OPGW optical cable in the current state;

[0093] A first determination module 304, configured to determine whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency;

[0094] The calculation module 305 is used to calculate the ice coating thickness of the OPGW optical cable according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the ice density of the OPGW optical cable.

[0095] Optionally, the calculation module 305 may be specifically used for:

[0096] The unit mass of ice when the OPGW optical cable is covered with ice is calculated according to the unit mass of the bare wire of the OPGW optical cable, the first vibration frequency and the second vibration frequency; the ice thickness of the OPGW optical cable is calculated based on the unit mass of ice, the density of ice and the initial radius of the OPGW optical cable.

[0097] Optionally, the calculation unit 305 may also be specifically configured to:

[0098] Substitute the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable into the target formula for calculation to obtain the ice thickness of the OPGW optical cable. The target formula is:

[0099]

[0100] Where d is the ice thickness, m0 is the bare wire unit mass of the OPGW optical cable, f0 is the first vibration frequency, and f i is the second vibration frequency, ρ i is the density of ice, and r is the initial radius of the OPGW optical cable.

[0101] Optionally, the analysis module 303 includes:

[0102] The processing unit 3031 is used to perform a fast Fourier transform on the target audio data to obtain target spectrum data corresponding to the target audio data;

[0103] A generating unit 3032 is used to generate a target spectrum diagram according to the target spectrum data, wherein the target spectrum diagram includes a target spectrum of the OPGW optical cable in a current state;

[0104] The calculation unit 3033 is used to calculate the second vibration frequency of the OPGW optical cable in the current state based on the target frequency spectrum.

[0105] Optionally, the calculation unit 3033 includes:

[0106] The identification subunit 30331 is used to identify the target maximum harmonic peak-to-peak value of the OPGW optical cable in the current state from the target spectrum diagram;

[0107] The calculation subunit 30332 is used to calculate the second vibration frequency according to the target maximum harmonic peak-to-peak value.

[0108] Optionally, the computing subunit 30332 may be specifically used for:

[0109] The current vibration frequency is calculated according to the target maximum harmonic peak-to-peak value; the current vibration frequency is corrected according to the temperature compensation mechanism to obtain a second vibration frequency.

[0110] Optionally, the ice thickness detection device for the OPGW optical cable also includes:

[0111] A second judgment module 306 is used to determine the ice level to which the ice thickness belongs;

[0112] The deicing module 307 is used to perform corresponding deicing operations according to the ice coverage level.

[0113] In the embodiment of the present invention, the first vibration frequency of the OPGW optical cable is obtained, the first vibration frequency is the natural frequency of the OPGW optical cable in the bare wire state, the first vibration frequency is obtained according to the analysis of the preset audio data, the target audio data of the OPGW optical cable in the current state is collected, and the second vibration frequency is obtained according to the target audio data. The second vibration frequency is the natural frequency of the OPGW optical cable in the current state, and it is determined whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency. If so, the ice-covered thickness of the OPGW optical cable is calculated according to the bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable. By comparing the vibration frequencies of the OPGW optical cable in the bare wire state and the current state, the accurate identification of the ice-covered state is achieved, and the scientific ice-covered thickness calculation is performed in combination with the physical parameters of the OPGW optical cable, which effectively improves the accuracy and reliability of the ice-covered thickness detection results.

[0114] above Figure 3 and Figure 4 The ice thickness detection device for the OPGW optical cable in the embodiment of the present invention is described in detail from the perspective of modular functional entities. The ice thickness detection device for the OPGW optical cable in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0115] See also Figure 5 As shown, the OPGW optical cable ice thickness detection device includes a processor 500 and a memory 501, the memory 501 stores machine executable instructions that can be executed by the processor 500, and the processor 500 executes the machine executable instructions to implement the above-mentioned OPGW optical cable ice thickness detection method.

[0116] Further, Figure 5 The OPGW optical cable ice thickness detection device shown also includes a bus 502 and a communication interface 503 , and the processor 500 , the communication interface 503 and the memory 501 are connected via the bus 502 .

[0117] Among them, the memory 501 may include a high-speed random access memory (RAM), and may also include a non-volatile memory (non-volatile memory), for example, at least one disk storage. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 503 (which can be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. can be used. The bus 502 can be an ISA bus, a PCI bus or an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0118] The processor 500 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 500. The above processor 500 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present disclosure can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present disclosure can be directly embodied as a hardware decoding processor to be executed, or a combination of hardware and software modules in the decoding processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 501 , and the processor 500 reads the information in the memory 501 and completes the method steps of the above-mentioned embodiment in combination with its hardware.

[0119] The present invention also provides an OPGW optical cable ice thickness detection device, the computer device includes a memory and a processor, the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the processor executes the steps of the OPGW optical cable ice thickness detection method in the above-mentioned embodiments.

[0120] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the method for detecting ice thickness of an OPGW optical cable.

[0121] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0122] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0123] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting ice thickness of an OPGW optical cable, characterized in that: The ice thickness detection method of the OPGW optical cable comprises: Obtaining a first vibration frequency of the OPGW optical cable, where the first vibration frequency is a natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained by analyzing preset audio data; Collecting target audio data of the OPGW optical cable in a current state; Analyze the target audio data to obtain a second vibration frequency, where the second vibration frequency is the natural frequency of the OPGW optical cable in the current state; Determining whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency; If so, the ice coating thickness of the OPGW optical cable is calculated according to the bare wire unit mass of the OPGW optical cable, the initial radius, the first vibration frequency, the second vibration frequency and the density of ice.

2. The method for detecting ice thickness of OPGW optical cable according to claim 1, characterized in that: The step of calculating the ice coating thickness of the OPGW optical cable according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the ice density of the OPGW optical cable comprises: Calculate the unit mass of ice when the OPGW optical cable is covered with ice according to the unit mass of the bare wire of the OPGW optical cable, the first vibration frequency, and the second vibration frequency; The ice coating thickness of the OPGW optical cable is calculated based on the unit mass of the ice, the density of the ice and the initial radius of the OPGW optical cable.

3. The method for detecting ice thickness of OPGW optical cable according to claim 1, characterized in that: The step of calculating the ice coating thickness of the OPGW optical cable according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the ice density of the OPGW optical cable comprises: The bare wire unit mass, initial radius, first vibration frequency, second vibration frequency and ice density of the OPGW optical cable are substituted into the target formula for calculation to obtain the ice coating thickness of the OPGW optical cable. The target formula is: Wherein, d is the ice thickness, m0 is the bare wire unit mass of the OPGW optical cable, f0 is the first vibration frequency, f i is the second vibration frequency, ρ i is the density of ice, and r is the initial radius of the OPGW optical cable.

4. The method for detecting ice thickness of OPGW optical cable according to claim 1, characterized in that: The step of analyzing the target audio data to obtain a second vibration frequency includes: Performing a fast Fourier transform on the target audio data to obtain target frequency spectrum data corresponding to the target audio data; Generate a target spectrum graph according to the target spectrum data, wherein the target spectrum graph includes a target spectrum of the OPGW optical cable in a current state; Based on the target frequency spectrum, a second vibration frequency of the OPGW optical cable in the current state is calculated.

5. The method for detecting ice thickness of OPGW optical cable according to claim 4, characterized in that: The step of calculating the second vibration frequency of the OPGW optical cable in the current state based on the target frequency spectrum includes: Identify the target maximum harmonic peak-to-peak value of the OPGW optical cable in the current state from the target spectrum graph; A second vibration frequency is calculated according to the target maximum harmonic peak-to-peak value.

6. The method for detecting ice thickness of OPGW optical cable according to claim 5, characterized in that: The calculating the second vibration frequency according to the target maximum harmonic peak-to-peak value comprises: Calculating the current vibration frequency according to the target maximum harmonic peak-to-peak value; The current vibration frequency is corrected according to the temperature compensation mechanism to obtain a second vibration frequency.

7. The method for detecting ice thickness of an OPGW optical cable according to any one of claims 1 to 6, characterized in that: After calculating the ice coating thickness of the OPGW optical cable according to the bare wire unit mass of the OPGW optical cable, the initial radius, the first vibration frequency, the second vibration frequency and the ice density, the method further includes: Determining the ice coverage level to which the ice coverage thickness belongs; A corresponding de-icing operation is performed according to the ice coverage level.

8. An OPGW optical cable ice thickness detection device, characterized in that: The ice thickness detection device of the OPGW optical cable comprises: An acquisition module, used for acquiring a first vibration frequency of the OPGW optical cable, where the first vibration frequency is a natural frequency of the OPGW optical cable in a bare wire state, and the first vibration frequency is obtained by analyzing preset audio data; An acquisition module, used for acquiring target audio data of the OPGW optical cable in a current state; An analysis module, configured to analyze the target audio data to obtain a second vibration frequency, where the second vibration frequency is a natural frequency of the OPGW optical cable in the current state; A first judging module, configured to judge whether the current state is an ice-covered state based on the first vibration frequency and the second vibration frequency; A calculation module is used to calculate the ice coating thickness of the OPGW optical cable according to the bare wire unit mass, the initial radius, the first vibration frequency, the second vibration frequency and the density of ice of the OPGW optical cable.

9. An OPGW optical cable ice thickness detection device, characterized in that: The ice thickness detection device for the OPGW optical cable comprises: a memory and at least one processor, wherein instructions are stored in the memory; The at least one processor calls the instructions in the memory to enable the OPGW optical cable ice thickness detection device to execute the OPGW optical cable ice thickness detection method according to any one of claims 1 to 7.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the method for detecting ice thickness of an OPGW optical cable according to any one of claims 1 to 7 is implemented.

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