Charging gun cable control method and device for integrated photovoltaic storage and charging device

Abstract

The present invention relates to the field of charging gun cable control processing technology, and relates to a charging gun cable control method and device for an integrated optical storage and charging machine. By utilizing the built-in optical fiber sensing technology of the integrated machine, optical fiber sensors are evenly distributed inside each optical fiber area, and real-time data of light beams in each optical fiber area is detected, and a preliminary analysis is performed on each optical fiber area, and the strain stress value of each optical fiber area corresponding to each monitoring time point is calculated, and a state assessment is performed on each optical fiber area based on the strain stress value, and then an in-depth analysis is performed on each optical fiber area to obtain a signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point, and the shear risk level of each optical fiber area corresponding to each reference time point is assessed, and an early warning assessment is performed on each optical fiber area based on the strain stress value, which can improve safety, avoid safety hazards such as current leakage and short circuit, reduce the risk of fire or electric shock, and reduce losses caused by failure to charge in time.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging gun cable control processing, and relates to a charging gun cable control method and device for an integrated photovoltaic storage and charging machine. Technical Background

[0002] As the global demand for clean energy grows, the integrated photovoltaic storage and charging device, as a new type of energy storage and conversion equipment, has been widely used due to its high efficiency, environmental protection, convenience, etc. However, the charging gun cable of the integrated photovoltaic storage and charging device contains expensive pure copper cables, which makes it a target for criminals, thus highlighting the importance of real-time detection of charging cables.

[0003] At present, there are still some areas that need to be optimized for the control of charging gun cables, which are specifically reflected in the following aspects:

[0004] The current signal processing method of the charging gun cable is not analyzed from a multi-level perspective, which easily leads to differences in the analysis data, increases the risk of major safety accidents, and may bring serious safety hazards and inconveniences, causing huge losses of life and property, and at the same time have a long-term negative impact on public health and environmental protection. A cut charging cable may cause current leakage or short circuit, increasing the risk of fire or electric shock. In addition, a cut cable will also affect the normal use of the charging device, resulting in an inability to charge or a slow charging speed, causing inconvenience to the user. At the same time, repairing or replacing a cut charging cable will also add additional costs and trouble. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a charging gun cable control method and device for a photovoltaic storage and charging integrated machine, which are used to solve the above technical problems.

[0006] In order to achieve the above purpose and other purposes, the technical solution adopted by the present invention is as follows:

[0007] A first aspect of the present invention provides a charging gun cable control method for a photovoltaic storage and charging integrated device, the method comprising:

[0008] (1) Divide the target charging gun cable into optical fiber areas according to preset lengths, and use the optical fiber sensing technology built into the all-in-one device to evenly distribute the optical fiber sensors inside each optical fiber area;

[0009] (2) Detecting the real-time data of the light beam in each optical fiber area based on the optical fiber sensor inside each optical fiber area, and recording it as the real-time data of each optical fiber area;

[0010] (3) Perform a preliminary analysis on each optical fiber area, calculate the strain stress value of each optical fiber area corresponding to each monitoring time point, and evaluate the state of each optical fiber area based on the strain stress value. If the state evaluation passes, execute step (2); otherwise, continue to execute step (4) and screen and obtain the reference time points corresponding to each optical fiber area;

[0011] (4) Conduct in-depth analysis of each optical fiber area to obtain the signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point, and further assess the shearing risk level of each optical fiber area corresponding to each reference time point;

[0012] (5) Conduct early warning assessment on each optical fiber area based on the shearing risk level of each optical fiber area at each reference time point.

[0013] Furthermore, the real-time data of each optical fiber region includes the wavelength, temperature value and phase value at each monitoring time point.

[0014] Furthermore, the strain stress value of each optical fiber area corresponding to each monitoring time point is calculated, and the calculation process is as follows:

[0015] Based on the real-time data of each optical fiber area, the wavelength of each optical fiber area corresponding to each monitoring time point is obtained;

[0016] The target monitoring time point is uniformly selected, and the wavelength of each optical fiber area corresponding to the target monitoring time point is calculated by difference with the wavelength of the target monitoring time point corresponding to the previous monitoring time point, and the wavelength change of each optical fiber area corresponding to the target monitoring time point is obtained. The wavelength change of each optical fiber area corresponding to each monitoring time point is analyzed and obtained. , i represents the number of each optical fiber area, i=1,2,...m, m is an arbitrary integer greater than 2, j represents the number of each monitoring time point, j=1,2,...n, n is an arbitrary integer greater than 2;

[0017] Based on the wavelength change of each optical fiber area at each monitoring time point, the temperature change of each optical fiber area at each monitoring time point can be deduced in the same way. ;

[0018] The optical fiber refractive index of each optical fiber area corresponding to each monitoring time point is calibrated to obtain the optical fiber refractive index of each optical fiber area corresponding to each monitoring time point. , and based on the wavelength change of each optical fiber area at each monitoring time point, the optical fiber refractive index change of each optical fiber area at each monitoring time point is deduced in the same way ;

[0019] The change in the refractive index of each optical fiber region at each monitoring time point is used as the numerator in the fraction, and the change in temperature of each optical fiber region at each monitoring time point is used as the denominator in the fraction. The fraction is solved to obtain the ratio of the refractive index change and the temperature change of each optical fiber region at each monitoring time point. ;

[0020] Comprehensive analysis yields the strain stress values ​​of each optical fiber area corresponding to each monitoring time point ,in Indicates the wavelength of the i-th optical fiber region corresponding to the j-th monitoring time point.

[0021] Furthermore, the optical fiber refractive index of each optical fiber region corresponding to each monitoring time point is calibrated, and the specific calibration process is as follows:

[0022] Extracting light source data corresponding to the reference cable optical fiber beam from the light source database, wherein the light source data includes a phase value and a refractive index at each monitoring time point;

[0023] The phase value of the reference cable fiber beam corresponding to each monitoring time point is subtracted from the phase value of each fiber area corresponding to each monitoring time point to obtain the phase difference value of each fiber area corresponding to each monitoring time point. ;

[0024] Get the refractive index of the reference cable fiber beam , Comprehensively analyze the fiber refractive index of each fiber area corresponding to each monitoring time point ,in is the length of each fiber region.

[0025] Furthermore, each optical fiber area is deeply analyzed, and the specific analysis process is as follows:

[0026] Obtain the time point corresponding to the key monitoring time point of each optical fiber area, take the time point corresponding to the key monitoring time point of each optical fiber area as the starting time point within the supervision time period, incorporate each time point corresponding to the time point corresponding to the key monitoring time point of each optical fiber area into the supervision time period, thereby obtaining the supervision time period corresponding to each optical fiber area, and obtain each time point within the supervision time period corresponding to each optical fiber area, mark it as a reference time point, and finally obtain each reference time point corresponding to each optical fiber area;

[0027] The phase delay index of each fiber region corresponding to each reference time point is calculated , where b is the imaginary unit and e is a natural constant, They represent the propagation constants of the optical fibers of the i-th optical fiber region corresponding to the p-th reference time point and the two main polarization axes, respectively. p represents the number of each reference time point, p=1,2,...u;

[0028] The phase delay index of each optical fiber region corresponding to each reference time point is imported into the calculation model to obtain the signal phase anomaly index of each optical fiber region corresponding to each reference time point ,in, They represent the phase delay index of the i-th optical fiber region corresponding to the p+1-th and p-1-th reference time points respectively.

[0029] Furthermore, the propagation constants of the two main polarization axes of the optical fiber corresponding to each reference time point in each optical fiber region are specifically calculated as follows:

[0030] The wavelength of each optical fiber area corresponding to each monitoring time point is obtained by screening the wavelength of each optical fiber area corresponding to each reference time point ;

[0031] , , from which the propagation constants of the optical fibers corresponding to the two main polarization axes of each optical fiber region corresponding to each reference time point are calculated. ,in Both represent the effective refractive index of the predefined optical fiber corresponding to the two principal polarization axes.

[0032] Furthermore, the propagation constants of the two main polarization axes of the optical fiber corresponding to each reference time point in each optical fiber region are specifically calculated as follows:

[0033] The wavelength of each optical fiber area corresponding to each monitoring time point is obtained by screening the wavelength of each optical fiber area corresponding to each reference time point ;

[0034] , , from which the propagation constants of the optical fibers corresponding to the two main polarization axes of each optical fiber region corresponding to each reference time point are calculated. ,in Both represent the effective refractive index of the predefined optical fiber corresponding to the two principal polarization axes.

[0035] Perform in-depth analysis on each fiber area. The analysis process also includes the following steps:

[0036] According to the deployed optical fiber sensors, the signal value of each optical fiber area corresponding to each reference time point is obtained, and then the signal waveform diagram of each optical fiber area corresponding to the supervision time period is generated, from which the signal coordinate value of each optical fiber area corresponding to each reference time point is extracted. ;

[0037] Comprehensive analysis yields the signal coordinate anomaly index of each optical fiber region corresponding to each reference time point , is the signal coordinate value of the ith optical fiber region corresponding to the p+1th reference time point, is the signal coordinate value of the i-th optical fiber region corresponding to the p-1-th reference time point, is the predetermined permission signal coordinate difference.

[0038] Furthermore, the signal anomaly evaluation coefficient of each optical fiber region corresponding to each reference time point is obtained as follows:

[0039] The signal phase anomaly index and signal coordinate anomaly index of each optical fiber region corresponding to each reference time point are combined, and the signal anomaly evaluation coefficient of each optical fiber region corresponding to each reference time point is obtained through comprehensive analysis. , c1 and c2 represent the calculation factors of the signal anomaly evaluation coefficient corresponding to the predefined signal phase anomaly index and signal coordinate anomaly index, respectively.

[0040] Furthermore, the shear risk level of each optical fiber area corresponding to each reference time point is evaluated. The specific evaluation process is as follows:

[0041] The signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point is compared with the signal anomaly assessment coefficient interval value corresponding to each cutting risk level stored in the database, thereby obtaining the cutting risk level of each optical fiber area corresponding to each reference time point.

[0042] Another aspect of the present invention provides a charging gun cable control device for a photovoltaic storage and charging integrated machine, including an electronic device and a computer-readable storage medium;

[0043] The electronic device comprises a processor, a memory and a communication bus, wherein the memory stores a computer-readable program executable by the processor;

[0044] The communication bus realizes the connection and communication between the processor and the memory;

[0045] When the processor executes the computer-readable program, the steps in the charging gun cable control method of the integrated photovoltaic storage and charging device of the present invention are implemented;

[0046] The computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the charging gun cable control method of the integrated photovoltaic storage and charging device as described in the present invention.

[0047] As described above, the charging gun cable control method and device of the integrated photovoltaic storage and charging device provided by the present invention have at least the following beneficial effects:

[0048] The charging gun cable control method and device of the integrated optical storage and charging machine provided by the present invention utilizes the built-in optical fiber sensing technology of the integrated machine to evenly distribute the optical fiber sensors inside each optical fiber area, detect and obtain the real-time data of the light beam in each optical fiber area, and perform preliminary analysis on each optical fiber area, calculate the strain stress value of each optical fiber area corresponding to each monitoring time point, and perform state assessment on each optical fiber area based on the strain stress value, and then perform in-depth analysis on each optical fiber area, obtain the signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point, evaluate the cutting risk level of each optical fiber area corresponding to each reference time point, and perform early warning assessment on each optical fiber area based on the strain stress value, which can not only effectively prevent the charging gun cable from being maliciously cut, but also respond quickly when damage occurs, greatly improving the safety and user experience of the electric vehicle charging process.

[0049] Real-time monitoring of charging cables to prevent them from being cut has important benefits and necessity. This measure can not only improve safety, avoid safety hazards such as current leakage and short circuit, reduce the risk of fire or electric shock, but also reduce losses caused by failure to charge in time. At the same time, real-time monitoring can also improve the convenience of using charging equipment, ensure that it is available at any time, and avoid situations where charging cannot be performed or charging speed is slowed down due to cable cutting. In addition, timely detection and repair of cable damage can also save costs, avoid further losses and additional maintenance costs, ensure the normal operation of the equipment, protect the safety of users and equipment, improve the convenience of use, reduce maintenance costs, and effectively improve the service life and reliability of charging equipment, which has extremely high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0051] Figure 1 It is a schematic diagram of the connection of each step of the method of the present invention. DETAILED DESCRIPTION

[0052] The above contents in combination with the implementation of the present invention are merely examples and explanations of the concept of the present invention. The technical personnel in the relevant technical field may make various modifications or supplements to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

[0053] Example 1

[0054] See also Figure 1 As shown, a charging gun cable control method of a photovoltaic storage and charging integrated device includes:

[0055] (1) Divide the target charging gun cable into optical fiber areas according to preset lengths, and use the optical fiber sensing technology built into the all-in-one device to evenly distribute the optical fiber sensors inside each optical fiber area;

[0056] (2) Detecting the real-time data of the light beam in each optical fiber area based on the optical fiber sensor inside each optical fiber area, and recording it as the real-time data of each optical fiber area;

[0057] As a preferred solution, the real-time data of each optical fiber region includes the wavelength, temperature value and phase value at each monitoring time point.

[0058] (3) Perform a preliminary analysis on each optical fiber area, calculate the strain stress value of each optical fiber area corresponding to each monitoring time point, and evaluate the state of each optical fiber area based on the strain stress value. If the state evaluation passes, execute step (2); otherwise, continue to execute step (4) and screen and obtain the reference time points corresponding to each optical fiber area;

[0059] As a preferred solution, the strain stress value of each optical fiber area corresponding to each monitoring time point is calculated, and the calculation process is as follows:

[0060] Based on the real-time data of each optical fiber area, the wavelength of each optical fiber area corresponding to each monitoring time point is obtained;

[0061] The target monitoring time point is uniformly selected, and the wavelength of each optical fiber area corresponding to the target monitoring time point is calculated by difference with the wavelength of the target monitoring time point corresponding to the previous monitoring time point, and the wavelength change of each optical fiber area corresponding to the target monitoring time point is obtained. The wavelength change of each optical fiber area corresponding to each monitoring time point is analyzed and obtained. , i represents the number of each optical fiber area, i=1,2,...m, m is an arbitrary integer greater than 2, j represents the number of each monitoring time point, j=1,2,...n, n is an arbitrary integer greater than 2;

[0062] Based on the wavelength change of each optical fiber area at each monitoring time point, the temperature change of each optical fiber area at each monitoring time point can be deduced in the same way. ;

[0063] The optical fiber refractive index of each optical fiber area corresponding to each monitoring time point is calibrated to obtain the optical fiber refractive index of each optical fiber area corresponding to each monitoring time point. , and based on the wavelength change of each optical fiber area corresponding to each monitoring time point, the optical fiber refractive index change of each optical fiber area corresponding to each monitoring time point is deduced in the same way ;

[0064] The change in the refractive index of each optical fiber region at each monitoring time point is used as the numerator in the fraction, and the change in temperature of each optical fiber region at each monitoring time point is used as the denominator in the fraction. The fraction is solved to obtain the ratio of the refractive index change and the temperature change of each optical fiber region at each monitoring time point. ;

[0065] Comprehensive analysis yields the strain stress values ​​of each optical fiber area corresponding to each monitoring time point ,in Indicates the wavelength of the i-th optical fiber region corresponding to the j-th monitoring time point.

[0066] As a preferred solution, the optical fiber refractive index of each optical fiber region corresponding to each monitoring time point is calibrated, and the specific calibration process is:

[0067] Extracting light source data corresponding to the reference cable optical fiber beam from the light source database, wherein the light source data includes a phase value and a refractive index at each monitoring time point;

[0068] The phase value of the reference cable fiber beam corresponding to each monitoring time point is subtracted from the phase value of each fiber area corresponding to each monitoring time point to obtain the phase difference value of each fiber area corresponding to each monitoring time point. ;

[0069] Get the refractive index of the reference cable fiber beam , Comprehensively analyze the fiber refractive index of each fiber area corresponding to each monitoring time point ,in is the length of each fiber region.

[0070] It should be added that the specific process of obtaining the calculation formula of the optical fiber refractive index of each optical fiber area corresponding to each monitoring time point is as follows:

[0071] Known phase difference and optical path difference The relationship between can be expressed as: ;

[0072] The optical path difference is caused by the refractive index of the optical fiber, so the optical path difference can be expressed as ;

[0073] The above formulas are combined to obtain a calculation formula for the optical fiber refractive index of each optical fiber region corresponding to each monitoring time point.

[0074] It should be added that the state assessment of each optical fiber area is specifically carried out as follows: if the strain force value of a certain optical fiber area corresponding to a certain monitoring time point is greater than the preset maximum grasping force, the optical fiber area corresponding to the monitoring time point is recorded as the key monitoring time point.

[0075] It should be noted that when a normal person picks up a charging gun for charging, most of the time they directly pick up the gun head. If the line is entangled or other problems occur and the line is touched, the strain stress value of the line will change, and step (4) will be further performed to determine the safety of the charging cable.

[0076] Perform in-depth analysis on each optical fiber area to obtain the signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point, and further evaluate the shearing risk level of each optical fiber area corresponding to each reference time point; as a preferred solution, perform in-depth analysis on each optical fiber area, and the specific analysis process is as follows:

[0077] Obtain the time point corresponding to the key monitoring time point of each optical fiber area, take the time point corresponding to the key monitoring time point of each optical fiber area as the starting time point within the supervision time period, incorporate each time point corresponding to the time point corresponding to the key monitoring time point of each optical fiber area into the supervision time period, thereby obtaining the supervision time period corresponding to each optical fiber area, and obtain each time point within the supervision time period corresponding to each optical fiber area, mark it as a reference time point, and finally obtain each reference time point corresponding to each optical fiber area;

[0078] The phase delay index of each fiber region corresponding to each reference time point is calculated , where b is the imaginary unit and e is a natural constant, They represent the propagation constants of the optical fibers of the i-th optical fiber region corresponding to the p-th reference time point and the two main polarization axes, respectively. p represents the number of each reference time point, p=1,2,...u;

[0079] The phase delay index of each optical fiber region corresponding to each reference time point is imported into the calculation model to obtain the signal phase anomaly index of each optical fiber region corresponding to each reference time point ,in, They represent the phase delay index of the i-th optical fiber region corresponding to the p+1-th and p-1-th reference time points respectively.

[0080] As a preferred solution, the propagation constants of the two main polarization axes of the optical fiber corresponding to each reference time point in each optical fiber region are specifically calculated as follows:

[0081] The wavelength of each optical fiber area corresponding to each monitoring time point is obtained by screening the wavelength of each optical fiber area corresponding to each reference time point ;

[0082] , , from which the propagation constants of the optical fibers corresponding to the two main polarization axes of each optical fiber region corresponding to each reference time point are calculated. ,in Both represent the effective refractive index of the predefined optical fiber corresponding to the two principal polarization axes.

[0083] As a preferred solution, the propagation constants of the two main polarization axes of the optical fiber corresponding to each reference time point in each optical fiber region are specifically calculated as follows:

[0084] The wavelength of each optical fiber area corresponding to each monitoring time point is obtained by screening the wavelength of each optical fiber area corresponding to each reference time point ;

[0085] , , from which the propagation constants of the optical fibers corresponding to the two main polarization axes of each optical fiber region corresponding to each reference time point are calculated. ,in Both represent the effective refractive index of the predefined optical fiber corresponding to the two principal polarization axes.

[0086] Perform in-depth analysis on each fiber area. The analysis process also includes the following steps:

[0087] According to the deployed optical fiber sensors, the signal value of each optical fiber area corresponding to each reference time point is obtained, and then the signal waveform diagram of each optical fiber area corresponding to the supervision time period is generated, from which the signal coordinate value of each optical fiber area corresponding to each reference time point is extracted. ;

[0088] Comprehensive analysis yields the signal coordinate anomaly index of each optical fiber region corresponding to each reference time point , is the signal coordinate value of the ith optical fiber region corresponding to the p+1th reference time point, is the signal coordinate value of the i-th optical fiber region corresponding to the p-1-th reference time point, is the predetermined permission signal coordinate difference.

[0089] As a preferred solution, the signal anomaly evaluation coefficient of each optical fiber area corresponding to each reference time point is obtained as follows:

[0090] The signal phase anomaly index and signal coordinate anomaly index of each optical fiber region corresponding to each reference time point are combined, and the signal anomaly evaluation coefficient of each optical fiber region corresponding to each reference time point is obtained through comprehensive analysis. , c1 and c2 represent the calculation factors of the signal anomaly evaluation coefficient corresponding to the predefined signal phase anomaly index and signal coordinate anomaly index, respectively.

[0091] As a preferred solution, the shear risk level of each optical fiber area corresponding to each reference time point is evaluated. The specific evaluation process is as follows:

[0092] The signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point is compared with the signal anomaly assessment coefficient interval value corresponding to each cutting risk level stored in the database, thereby obtaining the cutting risk level of each optical fiber area corresponding to each reference time point.

[0093] An early warning assessment is performed on each fiber optic area based on the shear risk level at each reference time point. It should be added that the shear risk level at each reference time point of each fiber optic area is compared with the predefined early warning risk level. If there is a fiber optic area with a shear risk level at a reference time point greater than or equal to the predefined early warning risk level, the number corresponding to the fiber optic area is fed back to the person in charge of the target charging area, and personnel are dispatched to check. At the same time, the area location corresponding to the fiber optic area is obtained based on the number corresponding to the fiber optic area, and a voice ring is activated to broadcast an early warning at the area location corresponding to the fiber optic area.

[0094] Real-time monitoring of charging cables to prevent them from being cut has important benefits and necessity. This measure can not only improve safety, avoid safety hazards such as current leakage and short circuit, reduce the risk of fire or electric shock, but also reduce losses caused by failure to charge in time. At the same time, real-time monitoring can also improve the convenience of using charging equipment, ensure that it is available at any time, and avoid situations where charging cannot be performed or charging speed is slowed down due to cable cutting. In addition, timely detection and repair of cable damage can also save costs, avoid further losses and additional maintenance costs, ensure the normal operation of the equipment, protect the safety of users and equipment, improve the convenience of use, reduce maintenance costs, and effectively improve the service life and reliability of charging equipment, which has extremely high practical value.

[0095] Example 2

[0096] A charging gun cable control device for an integrated optical storage and charging device, comprising an electronic device and a computer-readable storage medium;

[0097] The electronic device comprises a processor, a memory and a communication bus, wherein the memory stores a computer-readable program executable by the processor;

[0098] The communication bus realizes the connection and communication between the processor and the memory;

[0099] When the processor executes the computer-readable program, the steps in the charging gun cable control method of the integrated photovoltaic storage and charging device of the present invention are implemented;

[0100] The computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the charging gun cable control method of the integrated photovoltaic storage and charging device as described in the present invention.

[0101] The charging gun cable control method and device of the integrated optical storage and charging machine provided by the present invention utilizes the built-in optical fiber sensing technology of the integrated machine to evenly distribute the optical fiber sensors inside each optical fiber area, detect and obtain the real-time data of the light beam in each optical fiber area, and perform preliminary analysis on each optical fiber area, calculate the strain stress value of each optical fiber area corresponding to each monitoring time point, and perform state assessment on each optical fiber area based on the strain stress value, and then perform in-depth analysis on each optical fiber area, obtain the signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point, evaluate the cutting risk level of each optical fiber area corresponding to each reference time point, and perform early warning assessment on each optical fiber area based on the strain stress value, which can not only effectively prevent the charging gun cable from being maliciously cut, but also respond quickly when damage occurs, greatly improving the safety and user experience of the electric vehicle charging process.

[0102] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A charging gun cable control method for a photovoltaic storage and charging integrated device, comprising: (1) Divide the target charging gun cable into optical fiber areas according to preset lengths, and use the optical fiber sensing technology built into the all-in-one device to evenly distribute the optical fiber sensors inside each optical fiber area; (2) Detecting the real-time data of the light beam in each optical fiber area based on the optical fiber sensor inside each optical fiber area, and recording it as the real-time data of each optical fiber area; (3) Perform a preliminary analysis on each optical fiber area, calculate the strain stress value of each optical fiber area corresponding to each monitoring time point, and evaluate the state of each optical fiber area based on the strain stress value. If the state evaluation passes, execute step (2); otherwise, continue to execute step (4) and screen and obtain the reference time points corresponding to each optical fiber area; Strain force value calculation process: Based on the real-time data of each optical fiber area, the wavelength of each optical fiber area corresponding to each monitoring time point is obtained; The target monitoring time point is uniformly selected, and the wavelength of each optical fiber area corresponding to the target monitoring time point is calculated by difference with the wavelength of the target monitoring time point corresponding to the previous monitoring time point, and the wavelength change of each optical fiber area corresponding to the target monitoring time point is obtained. The wavelength change of each optical fiber area corresponding to each monitoring time point is analyzed and obtained. , i represents the number of each optical fiber area, i=1,2,...m, m is an arbitrary integer greater than 2, j represents the number of each monitoring time point, j=1,2,...n, n is an arbitrary integer greater than 2; Based on the wavelength change of each optical fiber area at each monitoring time point, the temperature change of each optical fiber area at each monitoring time point can be deduced in the same way. ; The optical fiber refractive index of each optical fiber area corresponding to each monitoring time point is calibrated to obtain the optical fiber refractive index of each optical fiber area corresponding to each monitoring time point. , and similarly deduce the change in the optical fiber refractive index of each optical fiber area corresponding to each monitoring time point ; The change in the refractive index of each optical fiber region corresponding to each monitoring time point is used as the numerator in the fraction, and the change in temperature of each optical fiber region corresponding to each monitoring time point is used as the denominator in the fraction. The fraction is solved to obtain the ratio of the refractive index change and temperature change of each optical fiber region corresponding to each monitoring time point. ; Comprehensive analysis yields the strain stress values ​​of each optical fiber area corresponding to each monitoring time point ,in represents the wavelength of the i-th optical fiber region corresponding to the j-th monitoring time point; (4) Conduct in-depth analysis of each optical fiber area to obtain the signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point, and further assess the shearing risk level of each optical fiber area corresponding to each reference time point; (5) Conduct early warning assessment on each optical fiber area based on the shearing risk level of each optical fiber area at each reference time point.

2. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 1 is characterized in that: The real-time data of each optical fiber area includes the wavelength, temperature value and phase value at each monitoring time point.

3. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 1 is characterized in that: Calibrate the optical fiber refractive index of each optical fiber area corresponding to each monitoring time point. The specific calibration process is as follows: Extracting light source data corresponding to the reference cable optical fiber beam from the light source database, wherein the light source data includes a phase value and a refractive index at each monitoring time point; The phase value of the reference cable fiber beam corresponding to each monitoring time point is subtracted from the phase value of each fiber area corresponding to each monitoring time point to obtain the phase difference value of each fiber area corresponding to each monitoring time point. ; Get the refractive index of the reference cable fiber beam , Comprehensively analyze the fiber refractive index of each fiber area corresponding to each monitoring time point ,in is the length of each fiber region.

4. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 1 is characterized in that: Perform in-depth analysis on each optical fiber area. The specific analysis process is as follows: Obtain the time point corresponding to the key monitoring time point of each optical fiber area, take the time point corresponding to the key monitoring time point of each optical fiber area as the starting time point within the supervision time period, incorporate each time point corresponding to the time point corresponding to the key monitoring time point of each optical fiber area into the supervision time period, thereby obtaining the supervision time period corresponding to each optical fiber area, and obtain each time point within the supervision time period corresponding to each optical fiber area, mark it as a reference time point, and finally obtain each reference time point corresponding to each optical fiber area; The phase delay index of each fiber region corresponding to each reference time point is calculated , where b is the imaginary unit and e is a natural constant, They represent the propagation constants of the optical fibers of the i-th optical fiber region corresponding to the p-th reference time point and the two main polarization axes, respectively. p represents the number of each reference time point, p=1,2,...u; The phase delay index of each optical fiber region corresponding to each reference time point is imported into the calculation model to obtain the signal phase anomaly index of each optical fiber region corresponding to each reference time point ,in, They represent the phase delay index of the i-th optical fiber region corresponding to the p+1-th and p-1-th reference time points respectively.

5. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 4 is characterized in that: The propagation constants of the two main polarization axes of the optical fiber corresponding to each optical fiber region at each reference time point are calculated as follows: The wavelength of each optical fiber area corresponding to each monitoring time point is obtained by screening the wavelength of each optical fiber area corresponding to each reference time point ; , , from which the propagation constants of the optical fibers corresponding to the two main polarization axes of each optical fiber region corresponding to each reference time point are calculated. ,in Both represent the effective refractive index of the predefined optical fiber corresponding to the two principal polarization axes.

6. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 4 is characterized in that: Perform in-depth analysis on each fiber area. The analysis process also includes the following steps: According to the deployed optical fiber sensors, the signal value of each optical fiber area corresponding to each reference time point is obtained, and then the signal waveform diagram of each optical fiber area corresponding to the supervision time period is generated, from which the signal coordinate value of each optical fiber area corresponding to each reference time point is extracted. ; Comprehensive analysis yields the signal coordinate anomaly index of each optical fiber region corresponding to each reference time point , is the signal coordinate value of the ith optical fiber region corresponding to the p+1th reference time point, is the signal coordinate value of the ith optical fiber region corresponding to the p-1th reference time point, is the predetermined permission signal coordinate difference.

7. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 6 is characterized in that: The signal anomaly evaluation coefficient of each optical fiber area corresponding to each reference time point is obtained as follows: The signal phase anomaly index and signal coordinate anomaly index of each optical fiber region corresponding to each reference time point are combined, and the signal anomaly evaluation coefficient of each optical fiber region corresponding to each reference time point is obtained through comprehensive analysis. , c1 and c2 represent the calculation factors of the signal anomaly evaluation coefficient corresponding to the predefined signal phase anomaly index and signal coordinate anomaly index, respectively.

8. The charging gun cable control method of the integrated photovoltaic storage and charging device according to claim 1 is characterized in that: Evaluate the shear risk level of each optical fiber area at each reference time point. The specific evaluation process is as follows: The signal anomaly assessment coefficient of each optical fiber area corresponding to each reference time point is compared with the signal anomaly assessment coefficient interval value corresponding to each cutting risk level stored in the database, thereby obtaining the cutting risk level of each optical fiber area corresponding to each reference time point.

9. A charging gun cable control device for a photovoltaic storage and charging integrated device, applied to a charging gun cable control method for a photovoltaic storage and charging integrated device according to any one of claims 1 to 8, characterized in that: including an electronic device and a computer-readable storage medium; The electronic device comprises a processor, a memory and a communication bus, wherein the memory stores a computer-readable program executable by the processor; The communication bus realizes the connection and communication between the processor and the memory; When the processor executes the computer-readable program, the steps in the charging gun cable control method of the integrated photovoltaic storage and charging device according to any one of claims 1 to 8 are implemented; The computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the charging gun cable control method of the integrated photovoltaic storage and charging device as described in any one of claims 1-8.

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