In-situ real-time electrochromic monitoring device and method

Abstract

The invention provides an in-situ real-time electrochromism monitoring device and method, and belongs to the technical field of electrochromism, the device comprises a light source, a spectrometer, an electrochromism sensing optical fiber and an electrolyte solution; one end of the electrochromic sensing optical fiber is connected with the light source, and the other end of the electrochromic sensing optical fiber is connected with the spectrograph; the electrochromic sensing optical fiber is also connected with an electrochemical workstation through a Dupont line to serve as a working electrode, and the working electrode is immersed in the electrolyte solution; and the spectrograph is used for obtaining an electrochromic monitoring result based on spectral information of color change and color fading of the electrochromic material when the electrochromic sensing optical fiber is in the electrolyte solution. The electrochromic sensing optical fiber adopted by the invention has excellent corrosion resistance, strong anti-interference capability and high measurement precision, so that the aim of quickly, accurately and stably monitoring the high electric field change of the environment can be fulfilled.

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, in many application scenarios, fields such as leakage monitoring of high-risk electric fields have put forward more stringent requirements on the performance of sensor devices. 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 stable and accurate monitoring functions under these conditions, which poses a severe test to 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 the changes in the high electric field of 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; 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 the spectral information of the discoloration and fading of the electrochromic material when the electrochromic sensing optical fiber is in an electrolyte solution.

[0006] 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.

[0007] 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; 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.

[0008] In a possible implementation, the sensing region surface and the end face of the optical fiber body are coated with a gold film, and other regions of the optical fiber body other than the sensing region surface and the end face are coated with the conductive carbon paste.

[0009] 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 by a magnetron method.

[0010] In a possible implementation, when the spectrometer collects the spectral information, the voltage of the electrochemical workstation is -2.5V~2.5V.

[0011] In one possible implementation, the spectrometer is used to determine the wavelength change of the electrochromic material during the discoloration and fading process 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.

[0012] In a possible implementation, the electrochromic material is V2O5.

[0013] In a possible implementation, the electrochromic material is deposited by an electrochemical deposition method.

[0014] 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: The spectrometer obtains the spectral information of the discoloration and fading of the electrochromic material through the electrochromic sensing optical fiber, and obtains the electrochromic monitoring result based on the spectral information.

[0015] The beneficial effect of adopting the above-mentioned implementation manner is: 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 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 the spectral information of the discoloration and fading of the electrochromic material when the electrochromic sensing optical fiber is in the electrolyte solution.

[0016] The present invention uses an electrochromic sensing optical fiber to collect the spectral information of the electrochromic material in the optical fiber sensing area, and analyzes the collected spectral information through a spectrometer to obtain an electrochromic monitoring result. Through the coloring and fading changes, the electrochromic sensing optical fiber can intuitively reflect the voltage change, thereby realizing the monitoring of the circuit state. The electrochromic sensing optical fiber has excellent corrosion resistance, strong anti-interference ability and high measurement accuracy, and can thus achieve the purpose of quickly, accurately and stably monitoring the high electric field changes in the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 A schematic structural diagram of an embodiment of an in-situ real-time electrochromic monitoring device provided by the present invention; Figure 2 A schematic structural diagram of an embodiment of the electrochromic sensing optical fiber provided by the present invention; Figure 3 The present invention provides a flowchart of an embodiment of the in-situ real-time electrochromic monitoring method. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0020] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0021] 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 equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0022] 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.

[0023] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The present invention provides an in-situ real-time electrochromic monitoring device and method, which are respectively described below.

[0025] 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; 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; The electrochromic sensing optical fiber 103 is also connected to the electrochemical workstation 106 via a Dupont line, so that the electrochromic sensing optical fiber 103 is used as a working electrode of the electrochemical workstation 106, and the working electrode is immersed in the electrolyte solution 105; The spectrometer 102 is used to obtain electrochromic monitoring results based on the spectral information of the discoloration 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.

[0026] 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.

[0027] Therefore, it is urgent to develop an electrochromic monitoring system of an electrochromic sensing optical fiber 103 that can more effectively detect changes in high electric field strength. The system can overcome the limitations of the prior art and provide a fast, accurate and stable solution for monitoring environmental high electric field changes. 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 stable and accurate monitoring functions are maintained 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 monitor the color change of electrochromic devices in real time under high-risk electric fields, thereby playing an important role in factories with high-risk electric fields.

[0028] In the face of these challenges, optical fiber sensing and electrochromic technology have become one of the key solutions. With the assistance of optical fiber sensing, the accuracy and stability of monitoring the color change effect of electrochromic material 104 can be greatly improved, and in-situ real-time EC (electrochromic) cycle monitoring can be achieved, so that voltage changes or leakage can be quickly and stably detected under high-risk potentials.

[0029] 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.

[0030] In some embodiments, Figure 2 As shown, the electrochromic sensing optical fiber 103 comprises: an optical fiber body 201, a conductive carbon paste 202, a gold particle layer 203 and an electrochromic material 104; The gold particle layer 203 is coated on the surface of the optical fiber body 201 in the sensing area, 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 .

[0031] 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 .

[0032] 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 method.

[0033] 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.

[0034] It is understood that the electrochromic material 104 is subjected to a cyclic voltammetry test in the electrochemical workstation 106, and the voltage for changing the color is set to -2.5~2.5V. 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 result based on the wavelength change.

[0035] It can be understood that the oxidation / reduction peak measured by the electrochemical workstation 106 can reflect the discoloration-fading process of the electrochromic material 104. At the same time, the spectrum peak information is extracted by the optical signal measured by the spectrometer 102, and the wavelength change during the discoloration-fading process of the electrochromic material 104 is analyzed, thereby reflecting the discoloration degree of the material at a certain potential, improving the monitoring accuracy, and realizing in-situ real-time EC cycle monitoring. The stability can be judged by observing the change in the area of ​​the cycle curve through multiple cycles, and the smaller the change, the better the stability.

[0036] In some embodiments, the electrochromic material 104 coated on the sensing area of ​​the optical fiber body 201 is V2O5 (vanadium pentoxide).

[0037] In some embodiments, V2O5 is deposited in the sensing region of the optical fiber body 201 by electrochemical deposition.

[0038] In some embodiments, the present invention provides an in-situ real-time EC cycle monitoring system of the electrochromic sensing optical fiber 103, see Figure 1 to Figure 2 , Figure 1 1 is a schematic diagram of the overall structure of an in-situ real-time EC cycle monitoring system of an electrochromic sensing optical fiber 103 provided in an embodiment of the present invention, which includes: a light source 101, a spectrometer 102, an electrochromic sensing optical 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 1 is a schematic diagram of the structure of an optical fiber in an in-situ real-time EC cycle monitoring system of an electrochromic sensing optical fiber 103 provided in an embodiment of the present invention, which includes: an optical fiber 201, a conductive carbon paste 202, a gold particle layer 203, and an electrochromic material 104. The specific implementation steps are as follows: Step 1: Prepare 0.1 mol / L V2O5 sol: Take 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 well, and then ultrasonicate for 2 hours to form a brown-red stable sol.

[0039] Step 2: Clean the fiber probe thoroughly to remove impurities and oil stains on the surface to ensure the firm adhesion of the subsequent modification layer. Activate the fiber surface by chemical methods, such as using plasma treatment, to increase the surface energy and promote the anchoring of subsequent molecules. Use a magnetron method to coat a 45nm gold film 203 on the surface and end face of the fiber sensing area, and coat the remaining areas with a 50μm conductive carbon paste 202 for conductivity. V2O5 is deposited on the sensing area of ​​the optical fiber by electrochemical deposition. The relevant parameters of the electrochemical workstation 106 are voltage -1.5V~1.5V, a sweep rate of 50mV / s, and 4 groups are scanned at a time.

[0040] Step 3: One end of the electrochromic optical fiber is connected to the light source 101, and the other end is connected to the spectrometer 102. The light source 101 and the spectrometer 102 are turned on to record the spectrum information of the electrochromic optical fiber in the air.

[0041] Step 4: remove part of the protective layer of the Dupont wire to expose the copper wire wrapped therein. Wrap the copper wire around the carbon-coated optical fiber, connect the other end to the electrochemical workstation 106 as the working electrode of the electrochemical workstation 106, and immerse the electrochromic sensing optical fiber 103, the platinum electrode 107 and the Ag / AgCl electrode 108 in the electrolyte solution 105.

[0042] Step 5: Use the spectrometer 102 to record the spectrum information of the electrochromic optical fiber in the electrolyte solution 105 as a baseline. Set the relevant parameters of the electrochemical workstation 106 to -2.5V~2.5V, the sweep rate to 50mV / s, and 10 groups of sweeps at a time, and use the spectrometer 102 to record the light signal emitted by the color change of the material, and obtain the detection information by observing the CV curve (cyclic voltammetry curve) and spectrum changes of the electrochemical workstation 106.

[0043] Step 6, data analysis and processing, the oxidation / reduction peak measured by the electrochemical workstation 106 can reflect the discoloration-fading process of the electrochromic material 104, and the spectrum peak information is extracted by the optical signal measured by the spectrometer 102, and the wavelength change during the discoloration-fading process of the electrochromic material 104 is analyzed, thereby reflecting the discoloration degree of the material at a certain potential, improving the monitoring accuracy, and realizing in-situ real-time EC cycle monitoring. The stability can be judged by observing the change in the area of ​​the cycle curve through multiple cycles, and the smaller the change, the better the stability.

[0044] The present invention provides an in-situ real-time EC cycle monitoring system for an electrochromic sensing optical fiber 103. Compared with the prior art, the present invention has the following technical advantages and beneficial effects. First, the present invention realizes real-time monitoring of the EC cycle of the electrochromic material 104 through an optical fiber sensor, overcoming the limitations of the prior art such as long response time and long detection cycle. Secondly, by introducing the optical fiber sensing system, the color change of the electrochromic material 104 can be accurately captured, thereby improving the accuracy of monitoring. In addition, the electrochromic optical fiber is tested for multiple cycles in combination with the electrochemical workstation 106, and its stability is judged by observing the change in the cycle curve area of ​​V2O5. This correlation analysis method of optical signals and electrochemical data not only improves the accuracy of monitoring, but also enables the system to quickly and stably detect voltage changes or leakage at high-risk potentials, providing strong technical support for safety monitoring in related fields. In summary, the present invention realizes efficient, accurate and stable monitoring of the EC cycle of the electrochromic material 104 through innovative technical means, solving the limitations of the prior art such as long response time, long detection cycle, complex operation and inaccurate detection.

[0045] The present invention also provides an electrochromic monitoring method of an electrochromic sensing optical fiber 103, the method being applied to any of the above-mentioned devices, such as Figure 3 As shown, the method includes: S301 , the spectrometer 102 obtains the spectral information of the color change and fading of the electrochromic material 104 through the electrochromic sensing optical fiber 103 , and obtains the electrochromic monitoring result based on the spectral information.

[0046] It is understandable that the present invention uses electrochromic sensing optical fiber to collect spectral information of electrochromic material discoloration and fading, and analyzes the collected spectral information through a spectrometer to obtain electrochromic monitoring results. Through the coloring and fading changes, the electrochromic sensing optical fiber can intuitively reflect the voltage change, thereby realizing the monitoring of the circuit state. The electrochromic sensing optical fiber has excellent corrosion resistance, strong anti-interference ability and high measurement accuracy, and can thus achieve the purpose of quickly, accurately and stably monitoring the high electric field changes in the environment.

[0047] The in-situ real-time electrochromic monitoring device and method provided by the present invention are introduced in detail above. Specific examples are used in this article 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 technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on 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 spectrometer is used to obtain electrochromic monitoring results based on the spectral information of the discoloration and fading of the electrochromic material when the electrochromic sensing optical fiber is in an electrolyte solution.

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, the platinum electrode is used as a counter electrode, and the silver electrode is a silver-silver chloride reference electrode.

3. The in-situ real-time electrochromic monitoring system according to claim 1, characterized in that: 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.

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

5. The in-situ real-time electrochromic monitoring system according to claim 4, 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.

6. The in-situ real-time electrochromic monitoring system according to claim 3, characterized in that: When the spectrometer collects the spectral information, the voltage of the electrochemical workstation is -2.5V~2.5V.

7. The in-situ real-time electrochromic monitoring system according to claim 1, characterized in that: The spectrometer is used to determine the wavelength change of the electrochromic material during the color change and fading process 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.

8. The in-situ real-time electrochromic monitoring system according to any one of claims 1 to 7, characterized in that: The electrochromic material is V2O5.

9. The in-situ real-time electrochromic monitoring system according to claim 8, characterized in that: The electrochromic material is deposited by electrochemical deposition.

10. An in-situ real-time electrochromic monitoring method, characterized in that: The method is applied to the device according to any one of claims 1 to 9, and the method comprises: The spectrometer obtains the spectral information of the discoloration and fading of the electrochromic material through the electrochromic sensing optical fiber, and obtains the electrochromic monitoring result based on the spectral information.

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