In-situ real-time electrochromic monitoring device and method

Abstract

The present invention provides an in-situ, real-time electrochromic monitoring device and method, belonging to the field of electrochromic technology. The device comprises: a light source, a spectrometer, an electrochromic sensing fiber, and an electrolyte solution. One end of the electrochromic sensing fiber is connected to the light source, and the other end is connected to the spectrometer. The electrochromic sensing fiber is also connected to an electrochemical workstation via a DuPont cable to serve as a working electrode, and the working electrode is immersed in the electrolyte solution. The spectrometer is used to obtain electrochromic monitoring results based on spectral information of the electrochromic material discoloration and fading when the electrochromic sensing fiber is in the electrolyte solution. The electrochromic sensing fiber used in the present invention has excellent corrosion resistance, strong anti-interference ability, and high measurement accuracy, thereby achieving the purpose of quickly, accurately, and stably monitoring changes in high environmental electric fields.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochromism, and in particular to an in-situ real-time electrochromism monitoring device and method. Background Art

[0002] With the development of various industries, the performance requirements of sensor components have become increasingly stringent in numerous application scenarios, including leakage monitoring in high-risk electric fields. In high-risk electric fields such as high-voltage power stations and substations, sensors must not only cope with complex environments such as strong electromagnetic interference, potential radiation, and extreme temperature differences, but also ensure stable and accurate monitoring under these conditions. This places severe demands on sensor materials and technologies.

[0003] Therefore, there is an urgent need to develop a sensor device that can more effectively detect changes in high electric field strength, so as to overcome the limitations of existing technologies and provide a fast, accurate and stable solution for monitoring changes in environmental high electric fields. Summary of the Invention

[0004] In view of this, it is necessary to provide an in-situ real-time electrochromic monitoring device and method to achieve the purpose of quickly, accurately and stably monitoring changes in high electric fields in the environment.

[0005] In order to solve the above problems, on the one hand, the present invention provides an in-situ real-time electrochromic monitoring system, comprising: a light source, a spectrometer, an electrochromic sensing optical fiber, and an electrolyte solution;

[0006] One end of the electrochromic sensing optical fiber is connected to the light source, and the other end is connected to the spectrometer;

[0007] The electrochromic sensing optical fiber is also connected to an electrochemical workstation via a DuPont line to serve as a working electrode, and the working electrode is immersed in the electrolyte solution;

[0008] The spectrometer is used to obtain electrochromic monitoring results based on spectral information of the discoloration and fading of the electrochromic material when the electrochromic sensing optical fiber is in an electrolyte solution.

[0009] In a possible implementation, the electrodes of the electrochemical workstation further include a platinum electrode and a silver electrode, the platinum electrode is a counter electrode, and the silver electrode is a silver-silver chloride reference electrode.

[0010] In a possible implementation, the electrochromic sensing optical fiber includes: an optical fiber body, a conductive carbon paste, a gold particle layer, and an electrochromic material;

[0011] The gold particle layer is coated on the surface of the optical fiber body sensing area, the conductive carbon paste is coated on the surface of the optical fiber body except the sensing area, and the electrochromic material is coated on the surface of the gold particle layer.

[0012] In a possible implementation, the surface of the sensing region and the end face of the optical fiber body are coated with a gold film, and the surface of the sensing region and the end face of the optical fiber body and other regions are coated with the conductive carbon paste.

[0013] In a possible implementation, the gold film is coated on the surface of the sensing area and the end face of the optical fiber body using a magnetron method.

[0014] In a possible implementation, when the spectrometer collects the spectral information, the voltage of the electrochemical workstation is -2.5V~2.5V.

[0015] In one possible implementation, the spectrometer is used to determine the wavelength change during the discoloration and fading process of the electrochromic material based on the spectral peak information of the electrochromic sensing optical fiber in the electrolyte solution, and obtain the electrochromic monitoring results based on the wavelength change.

[0016] In a possible implementation, the electrochromic material is V2O5.

[0017] In a possible implementation, the electrochromic material is deposited by electrochemical deposition.

[0018] On the other hand, the present invention further provides an in-situ real-time electrochromic monitoring method, which is applied to any of the above-mentioned devices, and comprises:

[0019] The spectrometer obtains spectral information of the color change and fading of the electrochromic material through the electrochromic sensing optical fiber, and obtains electrochromic monitoring results based on the spectral information.

[0020] The beneficial effects of adopting the above-mentioned implementation manner are as follows: the in-situ real-time electrochromic monitoring device and method provided by the present invention include: a light source, a spectrometer, an electrochromic sensing optical fiber and an electrolyte solution; one end of the electrochromic sensing optical fiber is connected to the light source, and the other end is connected to the spectrometer; the electrochromic sensing optical fiber is also connected to an electrochemical workstation via a DuPont line to serve as a working electrode, and the working electrode is immersed in the electrolyte solution; the spectrometer is used to obtain electrochromic monitoring results based on spectral information of the discoloration and fading of the electrochromic material when the electrochromic sensing optical fiber is in the electrolyte solution.

[0021] This invention uses an electrochromic sensing fiber to collect spectral information from the electrochromic material in the fiber's sensing area. This information is then analyzed using a spectrometer to generate electrochromic monitoring results. Through color changes, the electrochromic sensing fiber can intuitively reflect voltage variations, thereby enabling circuit status monitoring. The electrochromic sensing fiber exhibits excellent corrosion resistance, strong anti-interference capabilities, and high measurement accuracy, enabling rapid, accurate, and stable monitoring of high-field environmental fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of an embodiment of the in-situ real-time electrochromic monitoring device provided by the present invention;

[0024] Figure 2 A schematic structural diagram of an embodiment of the electrochromic sensing optical fiber provided by the present invention;

[0025] Figure 3 This is a flow chart of an embodiment of the in-situ real-time electrochromic monitoring method provided by the present invention. DETAILED DESCRIPTION

[0026] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more.

[0028] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device comprising a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products or devices.

[0029] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0030] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] The present invention provides an in-situ real-time electrochromic monitoring device and method, which are described below.

[0032] like Figure 1 As shown, the present invention provides an electrochromic monitoring system of an electrochromic sensing optical fiber 103, comprising: a light source 101, a spectrometer 102, an electrochromic sensing optical fiber 103, and an electrolyte solution 105; the surface of the electrochromic sensing optical fiber 103 is coated with a layer of electrochromic material 104;

[0033] One end of the electrochromic sensing optical fiber 103 is connected to the light source 101, and the other end is connected to the spectrometer 102;

[0034] The electrochromic sensing fiber 103 is further connected to the electrochemical workstation 106 via a DuPont line, so that the electrochromic sensing fiber 103 serves as a working electrode of the electrochemical workstation 106 , and the working electrode is immersed in the electrolyte solution 105 ;

[0035] The spectrometer 102 is used to obtain electrochromic monitoring results based on the spectral information of the color change and fading of the electrochromic material 104 when the electrochromic sensing optical fiber 103 is in the electrolyte solution 105; the electrochromic monitoring results can be used to monitor changes in environmental high electric fields.

[0036] It is understandable that with the development of various industries, in many application scenarios, fields such as leakage monitoring in high-risk electric fields have put forward more stringent requirements on the performance of sensing optical fibers and electrochromic devices.

[0037] Therefore, there is an urgent need to develop an electrochromic monitoring system for an electrochromic sensing optical fiber 103 that can more effectively detect changes in high electric field strength. The system can overcome the limitations of existing technologies and provide a fast, accurate, and stable solution for monitoring changes in high electric fields in the environment. In high-risk electric fields such as high-voltage power stations and substations, sensors must not only cope with complex environments such as strong electromagnetic interference, possible radiation, and extreme temperature differences, but also ensure that they maintain stable and accurate monitoring functions under these conditions, which poses a severe test to sensor materials and technologies. The monitoring system provided by the present invention has a highly sensitive optical signal acquisition capability and can perform real-time monitoring of the color change of electrochromic devices under high-risk electric fields, thereby playing an important role in factories with high-risk electric fields.

[0038] Fiber optic sensing and electrochromic technology are key solutions to these challenges. Fiber optic sensing can significantly improve the accuracy and stability of monitoring the color change of electrochromic materials 104, enabling in-situ, real-time EC (electrochromic) cycling monitoring, enabling rapid and stable detection of voltage changes or leakage under high-risk potentials.

[0039] In some embodiments, the electrodes of the electrochemical workstation further include a platinum electrode 107 and a silver electrode 108 , wherein the platinum electrode is a counter electrode and the silver electrode 108 is a silver-silver chloride reference electrode.

[0040] In some embodiments, as Figure 2 As shown, the electrochromic sensing optical fiber 103 includes: an optical fiber body 201, a conductive carbon paste 202, a gold particle layer 203 and an electrochromic material 104;

[0041] The gold particle layer 203 is coated on the surface of the sensing area of ​​the optical fiber body 201 , the conductive carbon paste 202 is coated on the surface of the optical fiber body 201 except the sensing area, and the electrochromic material 104 is coated on the surface of the gold particle layer 203 .

[0042] In some embodiments, the sensing area surface and end face of the optical fiber body 201 are coated with a gold film, and other areas of the optical fiber body 201 other than the sensing area surface and end face are coated with the conductive carbon paste 202 .

[0043] In some embodiments, the gold film is coated on the surface of the sensing area and the end face of the optical fiber body 201 using a magnetron coating method.

[0044] In some embodiments, when the spectrometer 102 collects the spectral information, the voltage of the electrochemical workstation 106 is set to -2.5V~2.5V.

[0045] It is understood that the electrochromic material 104 is subjected to a cyclic voltammetry test in the electrochemical workstation 106, and the voltage at which the electrochromic material 104 changes color is set to -2.5 to 2.5 V.

[0046] In some embodiments, the spectrometer 102 is used to determine the wavelength change of the electrochromic material 104 during the color change and fading process based on the spectral peak information of the electrochromic sensing optical fiber 103 in the electrolyte solution 105, and obtain the electrochromic monitoring results based on the wavelength change.

[0047] It can be understood that the oxidation / reduction peaks measured by the electrochemical workstation 106 can reflect the color change and fading process of the electrochromic material 104. Simultaneously, the optical signal measured by the spectrometer 102 can be used to extract spectral peak information and analyze the wavelength changes during the color change and fading process of the electrochromic material 104. This can reflect the degree of color change of the material at a certain potential, thereby improving monitoring accuracy and enabling in-situ real-time EC cycle monitoring. The stability of the electrochromic material can be determined by observing the change in the area of ​​the cycle curve over multiple cycles; a smaller change indicates good stability.

[0048] In some embodiments, the electrochromic material 104 coated on the sensing area of ​​the optical fiber body 201 is V 2 O 5 (vanadium pentoxide).

[0049] In some embodiments, V2O5 is deposited on the sensing region of the optical fiber body 201 using an electrochemical deposition method.

[0050] In some embodiments, the present invention provides an in-situ real-time EC cycle monitoring system for an electrochromic sensing optical fiber 103. Figures 1 to 2 , Figure 1 1 is a schematic diagram of the overall structure of an in-situ real-time EC cycle monitoring system using an electrochromic sensing fiber 103 according to an embodiment of the present invention, comprising: a light source 101, a spectrometer 102, an electrochromic sensing fiber 103, an electrochromic material 104, an electrolyte solution 105, an electrochemical workstation 106, a platinum electrode 107, and an Ag / AgCl electrode 108; Figure 2 This is a schematic diagram of the structure of the optical fiber in the in-situ real-time EC cycle monitoring system of the electrochromic sensing optical fiber 103 provided by an embodiment of the present invention. It includes: optical fiber 201, conductive carbon paste 202, gold particle layer 203, and electrochromic material 104. The specific implementation steps are as follows:

[0051] Step 1: Prepare a 0.1 mol / L V2O5 sol. Add 3.6376 g of V2O5 powder, 16 ml of 30% hydrogen peroxide, and 184 ml of distilled water. Stir at 400 rpm for 1 hour to mix thoroughly, then sonicate for 2 hours to form a brown-red stable sol.

[0052] Step 2: Thoroughly clean the fiber probe to remove surface impurities and oil to ensure secure adhesion of the subsequent modification layer. Chemically activate the fiber surface, such as using plasma treatment, to increase surface energy and promote the anchoring of subsequent molecules. A 45nm gold film 203 is applied to the surface and end face of the fiber sensing area using a magnetron method, and a 50μm conductive carbon paste 202 is applied to the remaining areas for conductivity. V2O5 is deposited onto the sensing area of ​​the fiber using electrochemical deposition. The relevant parameters of the electrochemical workstation 106 are a voltage of -1.5V to 1.5V, a sweep rate of 50mV / s, and four scans at a time.

[0053] Step 3: Connect one end of the electrochromic optical fiber to the light source 101 and the other end to the spectrometer 102. Turn on the light source 101 and the spectrometer 102 to record the spectrum information of the electrochromic optical fiber in the air.

[0054] Step 4: Remove some of the protective layer from the DuPont wire to expose the copper wire. Wrap the copper wire around a carbon-coated optical fiber, and connect the other end to an electrochemical workstation 106 to serve as the working electrode. Immerse the electrochromic sensing fiber 103, platinum electrode 107, and Ag / AgCl electrode 108 in an electrolyte solution 105.

[0055] Step 5: Use spectrometer 102 to record the spectrum of the electrochromic fiber in electrolyte solution 105 as a baseline. Set the relevant parameters of electrochemical workstation 106 to a voltage of -2.5V to 2.5V, a sweep rate of 50mV / s, and 10 sweeps per scan. Use spectrometer 102 to record the light signal emitted by the material's color change. Detection information is obtained by observing the cyclic voltammetry (CV) curve and spectral changes on electrochemical workstation 106.

[0056] Step 6: Data analysis and processing. The oxidation / reduction peaks measured by the electrochemical workstation 106 reflect the color change and fading process of the electrochromic material 104. Simultaneously, the optical signal measured by the spectrometer 102 is used to extract spectral peak information and analyze the wavelength changes during the color change and fading process of the electrochromic material 104. This can reflect the degree of color change of the material at a certain potential, thereby improving monitoring accuracy and enabling in-situ real-time EC cycle monitoring. Stability can be determined by observing the change in the area of ​​the cycle curve over multiple cycles; a smaller change indicates good stability.

[0057] The present invention provides an in-situ, real-time EC cycle monitoring system using an electrochromic sensing fiber 103. Compared to existing technologies, the present invention offers the following technical advantages and beneficial effects. First, the present invention utilizes a fiber optic sensor to achieve real-time monitoring of the EC cycle of an electrochromic material 104, overcoming limitations of existing technologies such as long response times and detection cycles. Second, by incorporating a fiber optic sensing system, the color changes of the electrochromic material 104 can be accurately captured, thereby improving monitoring accuracy. Furthermore, multiple cycling tests are performed on the electrochromic fiber in conjunction with an electrochemical workstation 106, and its stability is assessed by observing changes in the area of ​​the V2O5 cycling curve. This correlation analysis of optical signals and electrochemical data not only improves monitoring accuracy but also enables the system to quickly and reliably detect voltage changes or leakage under high-risk potentials, providing strong technical support for safety monitoring in related fields. In summary, the present invention, through innovative technical means, achieves efficient, accurate, and stable monitoring of the EC cycle of an electrochromic material 104, overcoming limitations of existing technologies such as long response times, long detection cycles, complex operations, and inaccurate detection.

[0058] The present invention also provides a method for monitoring electrochromic changes of an electrochromic sensing optical fiber 103, which is applied to any of the above-mentioned devices, such as Figure 3 As shown, the method includes:

[0059] S301 , the spectrometer 102 obtains spectral information of the color change and fading of the electrochromic material 104 through the electrochromic sensing optical fiber 103 , and obtains electrochromic monitoring results based on the spectral information.

[0060] As will be appreciated, the present invention utilizes an electrochromic sensing fiber to collect spectral information about the color change and fading of the electrochromic material, and analyzes this spectral information using a spectrometer to generate electrochromic monitoring results. Through the color changes of the electrochromic sensing fiber, the electrochromic sensing fiber can intuitively reflect voltage changes, thereby enabling circuit status monitoring. Electrochromic sensing fibers offer excellent corrosion resistance, strong anti-interference capabilities, and high measurement accuracy, enabling rapid, accurate, and stable monitoring of high electric field variations in the environment.

[0061] The in-situ real-time electrochromic monitoring device and method provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An in-situ real-time electrochromic monitoring system, characterized in that: include: Light source, spectrometer, electrochromic sensing fiber, and electrolyte solution; One end of the electrochromic sensing optical fiber is connected to the light source, and the other end is connected to the spectrometer; The electrochromic sensing optical fiber is also connected to an electrochemical workstation via a DuPont line to serve as a working electrode, and the working electrode is immersed in the electrolyte solution; The electrochromic sensing optical fiber comprises: an optical fiber body, a conductive carbon paste, a gold particle layer and an electrochromic material; The gold particle layer is coated on the surface of the optical fiber body sensing area, the conductive carbon paste is coated on the surface of the optical fiber body except the sensing area, and the electrochromic material is coated on the surface of the gold particle layer; The spectrometer is used to determine the wavelength change during the color change and fading process of the electrochromic material based on the spectral peak information of the electrochromic sensing optical fiber in the electrolyte solution, and obtain the electrochromic monitoring result based on the wavelength change.

2. The in-situ real-time electrochromic monitoring system according to claim 1, characterized in that: The electrodes of the electrochemical workstation further include a platinum electrode and a silver electrode, wherein the platinum electrode serves as a counter electrode and the silver electrode serves as a silver-silver chloride reference electrode.

3. The in-situ real-time electrochromic monitoring system according to claim 1, characterized in that: The sensing area surface and the end face of the optical fiber body are coated with a gold film, and the other areas of the optical fiber body except the sensing area surface and the end face are coated with the conductive carbon paste.

4. The in-situ real-time electrochromic monitoring system according to claim 3, characterized in that: The gold film is coated on the surface of the sensing area and the end face of the optical fiber body by a magnetron method.

5. The in-situ real-time electrochromic monitoring system according to claim 1, characterized in that: When the spectrometer collects spectral information, the voltage of the electrochemical workstation is -2.5V~2.5V.

6. The in-situ real-time electrochromic monitoring system according to any one of claims 1 to 5, characterized in that: The electrochromic material is V2O5.

7. The in-situ real-time electrochromic monitoring system according to claim 6, characterized in that: The electrochromic material is deposited by electrochemical deposition.

8. An in-situ real-time electrochromic monitoring method, characterized in that: The method adopts the system according to any one of claims 1 to 7, and the method includes: The spectrometer obtains spectral information of the color change and fading of the electrochromic material through the electrochromic sensing optical fiber, and obtains electrochromic monitoring results based on the spectral information.

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