Electrochromic orbital pressure detection device

By utilizing the changes in the optical properties of the WO3 thin film and the conversion of pressure signals by the ion gel electrolyte layer, an electrochromic orbital pressure detection device has been developed, enabling wearable and visualized orbital pressure detection. This solves the problem that existing devices cannot accurately reflect changes in intraorbital pressure, making it suitable for continuous monitoring in mobile and home settings.

CN120918567APending Publication Date: 2025-11-11THE THIRD MEDICAL CENT OF THE CHINESE PEOPLES LIBERATION ARMY GENERAL HOSPITAL
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Patent Information

Application Number
CN202511231186.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-30
Publication Date
2025-11-11

AI Technical Summary

Technical Problem

Existing intraocular pressure monitoring devices cannot accurately reflect changes in intraorbital pressure and are not suitable for continuous monitoring in mobile or home settings. They also cannot simultaneously identify intraorbital pressure signals and external mechanical compression conditions.

Method used

An electrochromic orbital pressure detection device was designed, including a power supply module, a control module, and an electrochromic pressure detection module. It utilizes the changes in the optical properties of WO3 thin film to sense pressure through an ion gel electrolyte layer and convert it into a voltage signal to achieve visualized orbital pressure detection.

Benefits of technology

It enables wearable, visualized orbital pressure detection, accurately identifying orbital pressure signals and external mechanical compression conditions, making it suitable for continuous monitoring in mobile and home settings.

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Abstract

The embodiment of the invention provides an electrochromic orbital pressure detection device. The electrochromic orbital pressure detection device comprises a power supply module, a control module and an electrochromic pressure detection module, wherein the electrochromic pressure detection module is close to an orbital during use; the electrochromic pressure detection module comprises a top conductive electrode layer, an electrochromic active layer, an ionic gel electrolyte layer and a bottom conductive electrode layer, the electrochromic active layer is located on the ionic gel electrolyte layer, the top conductive electrode layer is located on the electrochromic active layer, and the bottom conductive electrode layer is located on the bottom conductive electrode layer. And the bottom conductive electrode layer is positioned below the ionic gel electrolyte layer. Pressure is sensed through the ionic gel electrolyte layer, a pressure signal is converted into a voltage signal through the control module, and the voltage signal is applied between the top conductive electrode layer and the bottom conductive electrode layer, so that ions in the ionic gel electrolyte layer migrate into the electrochromic active layer WO3 thin film, and then the color of the WO3 thin film is changed. Therefore, the orbital pressure can be visually detected.
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Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to an electrochromic orbital pressure detection device. Background Technology

[0002] Currently, intraocular pressure (IOP) is typically measured clinically using jet-type or contact tonometers. However, these devices primarily assess intraocular pressure reflected on the corneal surface and cannot accurately reflect changes in orbital pressure, such as bulging caused by conditions like extraocular muscle hypertrophy, orbital tumors, or orbital hemorrhage. Furthermore, traditional tonometers are mostly desktop devices, limiting their use and making them unsuitable for mobile, home-based, or continuous monitoring. Therefore, there is an urgent need for a wearable, visualized, dual-point-based flexible device that can simultaneously identify orbital pressure signals and external mechanical pressure, complementing existing IOP measurement systems. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an electrochromic orbital pressure detection device for visual detection of orbital pressure. Furthermore, the electrochromic orbital pressure detection device of this application is small in size and wearable.

[0004] This application provides an electrochromic orbital pressure detection device, comprising:

[0005] The power supply module, the control module, and the electrochromic pressure detection module that is in close contact with the eyeball during use;

[0006] The electrochromic pressure detection module includes a top conductive electrode layer, an electrochromic active layer, an ion gel electrolyte layer, and a bottom conductive electrode layer. The electrochromic active layer is located on the ion gel electrolyte layer, the top conductive electrode layer is located on the electrochromic active layer, and the bottom conductive electrode layer is located below the ion gel electrolyte layer.

[0007] The top conductive electrode layer and the bottom conductive electrode layer are respectively connected to the positive and negative terminals of the power supply module to form an electric field between the top conductive electrode layer and the bottom conductive electrode layer. The electrochromic active layer is a WO3 film. When ions in the ion gel electrolyte layer are inserted into or extracted from the WO3 film, the optical properties of the WO3 film will change. The ion gel electrolyte layer is used to provide ions and also to sense pressure, so that the control module converts the pressure sensed by the ion gel electrolyte layer into a corresponding voltage signal, and then applies the voltage signal to the top conductive electrode layer and the bottom conductive electrode layer through the power supply module.

[0008] In some embodiments, the electrochromic pressure detection module further includes a flexible protective layer disposed on the top conductive electrode layer. The flexible protective layer is made of a flexible PI substrate to prevent external environmental intrusion while ensuring the flexibility of the electrochromic pressure detection module.

[0009] In some embodiments, the electrochromic pressure detection module further includes a flexible substrate disposed beneath the bottom conductive electrode layer. The flexible substrate is made of polyimide (PI) film, which provides mechanical support for the electrochromic pressure detection module while ensuring the overall flexibility and stability of the electrochromic pressure detection module.

[0010] In some embodiments, it also includes:

[0011] A reference pressure module, which has the same structure as the electrochromic pressure detection module, is used to detect externally applied pressure during use.

[0012] In some embodiments, the signal channels of the electrochromic pressure detection module and the reference pressure module are physically isolated to avoid cross-interference.

[0013] In some embodiments, the system further includes a support frame, wherein the electrochromic pressure detection module is disposed at the lens position of the support frame, the power supply module and the control module are integrated on one support leg of the support frame, and the reference pressure reference module is connected to the power supply module and the control module via a flexible signal line.

[0014] In some embodiments, the ionogel electrolyte layer is a polyvinyl alcohol / phosphate ionogel film.

[0015] In some embodiments, the electrochromic pressure detection module is surrounded by an isolation strip to ensure space for pressure response.

[0016] In some embodiments, the color change of the electrochromic active layer is linearly or stepwise correlated with the pressure magnitude.

[0017] In some embodiments, the top conductive electrode layer and the bottom conductive electrode layer are

[0018] ITO / PI transparent conductive film.

[0019] This application provides an electrochromic orbital pressure detection device, including: a power supply module, a control module, and an electrochromic pressure detection module that is close to the eyeball during use. The electrochromic pressure detection module includes a top conductive electrode layer, an electrochromic active layer, an ion gel electrolyte layer, and a bottom conductive electrode layer. The electrochromic active layer is located on the ion gel electrolyte layer, the top conductive electrode layer is located on the top conductive electrode layer, and the bottom conductive electrode layer is located below the ion gel electrolyte layer. The top and bottom conductive electrode layers are respectively connected to the positive and negative electrodes of the power supply module to form an electric field between the top and bottom conductive electrode layers. The electrochromic active layer is a WO3 film. When ions in the ion gel electrolyte layer are embedded in or extracted from the WO3 film, the optical properties of the WO3 film change. The ion gel electrolyte layer provides ions and senses pressure, so that the control module converts the pressure sensed by the ion gel electrolyte layer into a corresponding voltage signal, which is then applied to the top and bottom conductive electrode layers by the power supply module. The pressure is sensed by the ion gel electrolyte layer, and the pressure signal is converted into a voltage signal by the control module and applied between the top conductive electrode layer and the bottom conductive electrode layer. This causes ions in the ion gel electrolyte layer to migrate into the WO3 film, thereby changing the color of the WO3 film, thus enabling the visual detection of orbital pressure.

[0020] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0021] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0022] Figure 1 This is a functional structure diagram of the electrochromic orbital pressure detection device in this embodiment;

[0023] Figure 2 This is a schematic diagram of the interlayer structure of the electrochromic pressure detection module in this embodiment;

[0024] Figure 3 This is a schematic diagram of the circuit element connection relationship in a specific embodiment;

[0025] Figure 4 This is a schematic diagram of the overall structure of a specific embodiment;

[0026] Figure 5This is a schematic diagram of the overall structure of the electrochromic pressure detection module in this embodiment. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0029] The following reference Figure 1 The present invention describes an electrochromic orbital pressure detection device, comprising: a power supply module 101, a control module 102, and an electrochromic pressure detection module 103 that is placed close to the eye socket during use; the electrochromic pressure detection module 103 includes a top conductive electrode layer, an electrochromic active layer, an ion gel electrolyte layer, and a bottom conductive electrode layer, wherein the electrochromic active layer is located on the ion gel electrolyte layer, the top conductive electrode layer is located on the electrochromic active layer, and the bottom conductive electrode layer is located below the ion gel electrolyte layer; the top conductive electrode layer and the bottom conductive electrode layer are respectively connected to the power supply module. The positive and negative terminals of 101 are connected to form an electric field between the top conductive electrode layer and the bottom conductive electrode layer. The electrochromic active layer is a WO3 (tungsten trioxide) film. When ions in the ion gel electrolyte layer are inserted into or extracted from the WO3 film, the optical properties of the WO3 film will change. The ion gel electrolyte layer is used to provide ions and also to sense pressure, so that the control module 102 converts the pressure sensed by the ion gel electrolyte layer into a corresponding voltage signal, and then applies the voltage signal to the top conductive electrode layer and the bottom conductive electrode layer through the power supply module 101.

[0030] The electrochromic orbital pressure detection device of this application embodiment senses pressure through an ion gel electrolyte layer and converts the pressure signal into a voltage signal through a control module, which is applied between the top conductive electrode layer and the bottom conductive electrode layer. This causes ions in the ion gel electrolyte layer to migrate into the WO3 film, thereby changing the color of the WO3 film and enabling visual detection of orbital pressure.

[0031] like Figure 2 The diagram shown is a schematic representation of the interlayer structure of the electrochromic pressure detection module in this embodiment. Figure 2 As can be seen, the electrochromic pressure detection module of this embodiment is installed in the following order from top to bottom: a top conductive electrode layer 201, an electrochromic active layer 202, an ion gel electrolyte layer 203, and a bottom conductive electrode layer 204. The electrochromic active layer 202 is located on the ion gel electrolyte layer 203, the top conductive electrode layer 201 is located on the electrochromic active layer 202, and the bottom conductive electrode layer 204 is located below the ion gel electrolyte layer 204. In this embodiment, the electrochromic pressure detection module also includes a flexible protective layer 206 disposed on the top conductive electrode layer. The flexible protective layer uses a flexible PI substrate to prevent external environmental intrusion while ensuring the flexibility of the electrochromic pressure detection module. Furthermore, a flexible substrate 205 is disposed below the bottom conductive electrode layer 204. The flexible substrate 205 uses a polyimide (PI) film to provide mechanical support for the electrochromic pressure detection module while ensuring the overall flexibility and stability of the module. The ion gel electrolyte layer is a polyvinyl alcohol / phosphate (PVA / H3PO4) ion gel film. The top conductive electrode layer and the bottom conductive electrode layer are conductive electrode layers of an ITO film prepared by magnetron sputtering on a PI film, ensuring high light transmittance and good conductivity. In this embodiment, the top conductive electrode layer 201, the electrochromic active layer 202, the ion gel electrolyte layer 203, and the bottom conductive electrode layer 204 are all nanometer-thick. Specifically, each layer can be encapsulated using 3M tape (VHB 4905). The integrated electrochromic pressure detection module is as follows: Figure 5 As shown.

[0032] To illustrate the technical solution of this application embodiment in more detail, an optional example is used below to illustrate the technical solution of this application. In this embodiment, the electrochromic pressure detection module consists of, from top to bottom, an ITO / PI transparent conductive electrode layer, a tungsten trioxide film, a PVA / H3PO4 gel layer, and an ITO / PI substrate. Specifically, the upper and lower ITO / PI electrodes and the sandwiched PVA / H3PO4 ion gel electrolyte layer are divided into two functional areas on the horizontal plane: the inner planar area is the electrochromic area, and the outer periphery surrounds the pressure sensing area, enabling the hybrid device to simultaneously achieve accurate pressure detection and dynamic color development. PVA / H3PO4, as an economical and efficient gel electrolyte, has the advantages of high ionic conductivity, mechanical strength, and flexibility. This ion gel electrolyte layer can not only provide intercalable cations to the tungsten trioxide film, but also form ion-electron pairs at the gel / electrode interface, thereby synergistically realizing electrochromic display and pressure sensing.

[0033] The following is an optional fabrication method for the electrochromic pressure detection module according to an embodiment of this application. First, a square hollow mask is fabricated using a photopolymerization 3D printer to sputter a dense tungsten trioxide electrochromic layer onto an ITO / PI substrate. Given the crucial role of structural design in improving pressure sensing performance, an initial template with a microstructure is fabricated using 3D printing—its inner planar region corresponds to the tungsten trioxide film, and its periphery is designed with micro-protrusions. Subsequently, the negative structure of this template is replicated using polydimethylsiloxane (PDMS), and then an ion-dielectric layer with a microstructure is obtained by PVA / H3PO4 gel transfer. Finally, ITO / PI sputtered with tungsten trioxide and pure ITO / PI are used as the upper and lower electrodes, respectively, with a microstructured PVA / H3PO4 gel layer sandwiched in between: the planar side of the gel layer is completely adhered to the upper electrode containing tungsten trioxide.

[0034] The working principle of the electrochromic pressure detection module of this application embodiment is explained below. Electrons on the electrode and cations (H+) in the gel layer attract each other, accumulating at a nanometer distance to form an electric double layer, thereby generating ultra-high capacitance. Due to the spacing effect of the four adhesive tapes, the ion gel electrolyte layer hardly contacts the bottom electrode in the initial state, resulting in a very small initial capacitance (Cp) (typically a few picofarads). The electric double layer capacitance (CEDL) is proportional to the contact area between the electrode and the ion gel. The top interface capacitance (CTEDL) with the electrode fully attached is significantly larger than the bottom interface capacitance (CBEDL) and remains essentially unchanged. When pressure is applied, the bottom electrode gradually contacts the microstructure on the top of the ion gel electrolyte layer. As the pressure increases, the microstructure deforms, increasing the area of ​​the electric double layer, and the CTEDL increases accordingly, dominating the total capacitance. Under low pressure conditions, only the narrow top of the microstructure contacts the electrode, and stress concentrates at the top interface; as the pressure increases, the stress deforms the microstructure, thereby increasing the area of ​​the electric double layer and obtaining a higher CTEDL value, thus exhibiting excellent pressure response performance. Among them, the tungsten trioxide thin film layer undergoes a redox reaction:

[0035]

[0036] In the above process, when a negative potential is applied, H+ ions insert into the WO3 film along with electrons, causing the film to change from a transparent state to a deep blue; simultaneously, the transmittance also changes. Conversely, under a positive potential, H+ ions and electrons are released from the WO3 film, returning to the initial state, and the electrochromic device returns to its original transparent state. The mechanism of pressure-induced coloration is as follows: when pressure is applied, the pressure-bearing part of the electrode gradually comes into contact with the ion gel; once the electrochromic conditions are met, the color change of the element with pressure can be observed.

[0037] In the embodiment of this application, the electrochromic orbital pressure detection device attaches the electrochromic pressure detection module to the eyelid during use, and determines the pressure change of the orbital pressure based on the color change of the electrochromic pressure detection module.

[0038] The electrochromic orbital pressure detection device of this application embodiment is small in size, wearable, and capable of visually detecting orbital pressure.

[0039] Furthermore, as an optional embodiment of this application, such as Figure 3 The diagram shown is a schematic representation of the circuit component connections in a specific embodiment. The electrochromic orbital pressure detection device in this embodiment includes a sensing module, a display module, a control module (MCU, Miniatured Microcontroller Unit), and a power supply module. The sensing module in this embodiment can be the electrochromic pressure detection module described in the previous embodiment. The display module is used to display the detected pressure reading. Furthermore, in this embodiment, the electrochromic orbital pressure detection device also includes:

[0040] A reference pressure module, which has the same structure as the electrochromic pressure detection module, is used to detect externally applied pressure during use. Specifically, during use, the electrochromic pressure detection module is attached to the eyelid, and the reference pressure module is attached to a non-eyelid area of ​​the face. The pressure changes of both the reference pressure module and the electrochromic pressure detection module are measured simultaneously. If the pressure change of the reference pressure module is zero, but the pressure of the electrochromic pressure detection module changes color, it is determined that the orbital pressure is elevated. If both the reference pressure module and the electrochromic pressure detection module change color simultaneously, it indicates the presence of external pressure interference.

[0041] The electrochromic orbital pressure detection device in this application embodiment also includes a reference pressure module. By comparing the reference pressure module and the electrochromic pressure detection module, it is possible to accurately detect whether the orbital pressure has increased.

[0042] In some embodiments, the signal channels of the electrochromic pressure detection module and the reference pressure module are physically isolated to avoid cross-interference.

[0043] As one specific implementation of the embodiments of this application, such as Figure 4The diagram shown is a schematic representation of the overall structure of a specific embodiment. In this embodiment, a supporting eyeglass frame is also included. The electrochromic pressure detection module is disposed at the lens position of the supporting eyeglass frame. The power supply module and the control module are integrated on one of the supporting legs of the supporting eyeglass frame. The reference pressure module is connected to the power supply module and the control module via a flexible signal line. In this embodiment, the power supply module and the control module can be fixed to the outside of one of the supporting legs of the supporting eyeglass frame, or they can be integrated inside one of the supporting legs. The reference pressure module can be flexibly connected to the power supply module and the control module via wires and signal lines, respectively. A rubber protective layer can be wrapped around the wires and signal lines to protect the circuitry.

[0044] In this embodiment, the electrochromic pressure detection module, reference pressure module, control module, and power supply module are integrated into a mature product by supporting the eyeglass frame. The eyeglass frame provides support for the entire device and protects the circuit, while also fixing the position of the electrochromic pressure detection module for easy detection.

[0045] In addition, as an optional embodiment of this application, the electrochromic pressure detection module, the reference pressure module, the control module and the power supply module can be integrated into a head-mounted device, such as a support frame similar to a helmet or VR glasses. The specific distribution of each module is not specifically limited here.

[0046] To ensure the accuracy of the test results, in some embodiments, the electrochromic pressure detection module is surrounded by an isolation strip to ensure sufficient space for pressure response.

[0047] In some embodiments, the color change of the electrochromic active layer is linearly or stepwise correlated with the pressure magnitude. In this embodiment, a color reference map can be generated in advance based on the color change of the electrochromic active layer and the pressure magnitude. During the frame pressure detection process, the frame pressure can be quickly determined based on the color reference map.

[0048] As an embodiment of this application, in the above embodiment, in order to more accurately detect orbital pressure, the electrochromic orbital pressure detection device may further include an airbag system and an inflation system. The airbag system employs a miniature, flexible, and sealed airbag cavity, which is tightly attached to the rear of the electrochromic pressure detection module (non-contact eyelid side). The inflation system includes: a precision micropump for injecting a small amount of gas into the airbag; and a high-precision pressure sensor for real-time monitoring of the air pressure within the airbag cavity (denoted as ).

[0049] `P_bladder`); High-speed microvalve: used for precise control of gas inflow and rapid release; Controller: microcontroller (MCU) or microprocessor used to control the entire inflation, measurement, and analysis process.

[0050] Initially, the electrochromic pressure detection module is placed on the eyelid. The module makes slight contact with the eyelid, but not with sufficient pressure to ensure a tight fit to the eyeball (there may be tiny gaps between the membrane and the eyeball). The pressure inside the bladder, `P_bladder`, is approximately 0 (or slightly higher than atmospheric pressure to maintain shape). Then, a micropump inflates the bladder at a very slow and constant rate, causing...

[0051] `P_bladder` increases linearly with time (`dP_bladder / dt = constant`).

[0052] In the initial stage of inflation, the balloon expansion primarily overcomes the initial deformation resistance of its own elasticity and flexible membrane. At this time, the slope of `P_bladder` increasing over time (`S_initial`) is relatively stable and large. Upon reaching the contact threshold, i.e., when the balloon expands to a certain extent and pushes the membrane receptor just into contact with the surface of the eyeball, once the membrane contacts the eyeball, continued inflation requires overcoming the rigidity of the eyeball itself (behind which is orbital pressure). In the later stage of inflation, at the same inflation rate...

[0053] The slope of the rise of `P_bladder` (`S_contact`) will be significantly reduced (because the eyeball is much harder than the air sac / membrane).

[0054] The control system calculates the real-time rate of change of `P_bladder` (`dP_bladder / dt`) or monitors its upward trend. A contact point is identified when a significant and sustained decrease in the pressure rise slope is detected (e.g., `S_contact` < `S_initial` * K, where K is an empirical coefficient, such as 0.7 or 0.8). `P_base` is determined by recording the airbag pressure value `P_bladder` at the instant the slope decreases significantly. This value is `P_base`, representing the minimum pressure required for the membrane receptor to overcome the slight elasticity and deformation of the eyelid tissue and achieve initial contact with the eyeball. The actual orbital pressure can then be accurately calculated based on the orbital pressure detected by the electrochromic pressure detection module and `P_base`.

[0055] The tungsten trioxide thin film in this embodiment was prepared by a DC magnetron sputtering method on a commercial ITO / PI electrode under the conditions of an argon-oxygen ratio of 30:15, a pressure of 1.8 Pa, a power of 80 W, and a sputtering time of 25 minutes. The sputtering target used was tungsten with a purity of 99.99%, a diameter of 60 mm, and a thickness of 3 mm.

[0056] The ionogel electrolyte layer can be prepared as follows: First, 3 grams of polyvinyl alcohol (PVA) is dissolved in 27 ml of deionized water and heated in an 85°C water bath with stirring until completely dissolved to form a transparent gel. After cooling to room temperature, phosphoric acid (AR≥85%) in different mass ratios is added dropwise, and stirring is continued for 2 hours. To prepare a PVA / H3PO4 ionogel film with a microstructure, a 3D-printed template is used as the initial template. After design and slicing using 3D modeling software, commercial photosensitive resin is cured layer by layer using a photopolymerization 3D printer to form a film with a minimum layer thickness of 25 micrometers. Subsequently, a PDMS matrix and curing agent are mixed at a weight ratio of 10:1 and placed in a vacuum chamber until the bubbles disappear. The prepared PDMS solution is precisely cast onto the 3D-printed microstructure template, cured at 80°C for 1 hour, and then peeled off to obtain the reverse template. Finally, PVA / H3PO4 gel is cast onto the PDMS template, cured at room temperature overnight, and then peeled off to form a PVA / H3PO4 ionogel film with a microstructure.

[0057] In the description of this invention, the terms "connection," "installation," and "fixation," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

Claims

1. An electrochromic orbital pressure detection device, characterized in that, include: Power supply module, control module, and electrochromic pressure detection module that is placed close to the eye socket during use; The electrochromic pressure detection module includes a top conductive electrode layer, an electrochromic active layer, an ion gel electrolyte layer, and a bottom conductive electrode layer. The electrochromic active layer is located on the ion gel electrolyte layer, the top conductive electrode layer is located on the electrochromic active layer, and the bottom conductive electrode layer is located below the ion gel electrolyte layer. The top conductive electrode layer and the bottom conductive electrode layer are respectively connected to the positive and negative terminals of the power supply module to form an electric field between the top conductive electrode layer and the bottom conductive electrode layer. The electrochromic active layer is a WO3 film. When ions in the ion gel electrolyte layer are inserted into or extracted from the WO3 film, the optical properties of the WO3 film will change. The ion gel electrolyte layer is used to provide ions and also to sense pressure, so that the control module converts the pressure sensed by the ion gel electrolyte layer into a corresponding voltage signal, and then applies the voltage signal to the top conductive electrode layer and the bottom conductive electrode layer through the power supply module.

2. The electrochromic orbital pressure detection device according to claim 1, characterized in that, The electrochromic pressure detection module also includes a flexible protective layer disposed on the top conductive electrode layer. The flexible protective layer uses a flexible polyimide substrate to prevent the intrusion of the external environment while ensuring the flexibility of the electrochromic pressure detection module.

3. The electrochromic orbital pressure detection device according to claim 1, characterized in that, The electrochromic pressure detection module also includes a flexible substrate disposed below the bottom conductive electrode layer. The flexible substrate is made of PI film, which provides mechanical support for the electrochromic pressure detection module and ensures the overall flexibility and stability of the electrochromic pressure detection module.

4. The electrochromic orbital pressure detection device according to claim 1, characterized in that, Also includes: A reference pressure module, which has the same structure as the electrochromic pressure detection module, is used to detect externally applied pressure during use.

5. The electrochromic orbital pressure detection device according to claim 4, characterized in that, The signal channels of the electrochromic pressure detection module and the reference pressure module are physically isolated to avoid cross-interference.

6. The electrochromic orbital pressure detection device according to claim 5, characterized in that, It also includes a support eyeglass frame, the electrochromic pressure detection module is located at the lens position of the support eyeglass frame, the power supply module and the control module are integrated on one of the support legs of the support eyeglass frame, and the reference pressure reference module is connected to the power supply module and the control module through a flexible signal line.

7. The electrochromic orbital pressure detection device according to claim 6, characterized in that, The ion gel electrolyte layer is a polyvinyl alcohol / phosphate ion gel film.

8. The electrochromic orbital pressure detection device according to claim 7, characterized in that, The electrochromic pressure detection module is surrounded by isolation strips to ensure sufficient space for pressure response.

9. The electrochromic orbital pressure detection device according to claim 8, characterized in that, The color change of the electrochromic active layer is linearly or stepwise correlated with the pressure.

10. The electrochromic orbital pressure detection device according to claim 9, characterized in that, The top conductive electrode layer and the bottom conductive electrode layer are ITO / PI transparent conductive electrode films.