A sensing device capable of detecting and regulating light intensity

Abstract

The application discloses a sensing device capable of detecting and regulating light intensity, and belongs to the technical field of bionic robots. The sensing device comprises an eyeball-shaped shell, a first transparent conductive layer and a second transparent conductive layer oppositely arranged in the eyeball-shaped shell, an organic gel ionic conductive layer arranged between the first transparent conductive layer and the second transparent conductive layer, and a transparent counter electrode layer arranged at one end of the organic gel ionic conductive layer close to the first transparent conductive layer and adhered to the first transparent conductive layer. The photosensitive layer in the bionic eye device has a photoelectric response effect, generates a photoelectric current under light conditions, and is collected by an external circuit through an interface potential barrier. Different photoelectric currents are corresponded to different light intensities, which can be used for the judgment of the incident light intensity by a control system. The metal film formed by the electrodeposited ions in the organic gel on the surface of the transparent counter electrode layer can control the incident light flux, and the metal film corresponds to the retina of a real human eye.

Description

Technical Field

[0001] This application relates to the field of biomimetic robot technology, specifically a sensing device capable of detecting and controlling light intensity. Background Technology

[0002] In nature, the eye is one of the most important sensory organs in living organisms, and our brains obtain more than 80% of the information about our surroundings through the eye. The human eye's excellent light management and image sensing capabilities have evolved over a long period of time. For robotic systems, having an information acquisition system as complete as the senses of humans and other living organisms has always been an important research direction. Therefore, simulating the structure and function of the human eye has become an important component of bionics.

[0003] The light management of the human eye includes functions such as sensing the intensity of light incident on the eyeball and regulating the amount of light entering the eyeball. Light entering the human eye passes through the pupil, is refracted by the vitreous humor and forms an image on the retina, and at the same time, the intensity of the light is transmitted to the brain, producing the sensation of light and dark. The pupil regulates the amount of incident light according to the sensation of light and dark generated by the brain to obtain the best visual experience. However, the existing bionic eye technology has a complex structure and cannot be well integrated with other bionic technology devices. In addition, bionic eye devices that can simultaneously achieve the dual functions of light sensing and light flux regulation within a single device have been rarely studied.

[0004] Therefore, this application provides a sensing device capable of detecting and controlling light intensity to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a sensing device capable of detecting and controlling light intensity, aiming to solve the problem mentioned in the background art that the existing bionic eye technology has a complex structure and cannot be well integrated with other bionic technology devices.

[0006] To achieve the above objectives, this application provides the following technical solution: a sensing device capable of detecting and controlling light intensity, comprising an eyeball-shaped shell and a first transparent conductive layer and a second transparent conductive layer disposed opposite to each other inside the eyeball-shaped shell, wherein an organic gel ion conductive layer is disposed between the first transparent conductive layer and the second transparent conductive layer, wherein a transparent counter electrode layer is disposed at one end of the organic gel ion conductive layer near the first transparent conductive layer and is attached to the first transparent conductive layer, wherein a photosensitive layer is disposed at one end of the organic gel ion conductive layer away from the first transparent conductive layer and is attached to the second transparent conductive layer, and a transmission line is disposed on the side of the eyeball-shaped shell away from the first transparent conductive layer.

[0007] Preferably, the photosensitive layer is composed of a titanium dioxide semiconductor thin film with photoelectric response.

[0008] Preferably, the organic gel ion-conductive layer comprises charge-transporting ions, electrodeposited ions, electrical balance ions, and an organic gel matrix.

[0009] Preferably, the organic gel in the organic gel ion-conductive layer is a gel skeleton composed of polyethylene glycol diacrylate.

[0010] Preferably, the transparent counter electrode layer comprises a transparent platinum metal electrode that has an auxiliary electrodeposition function.

[0011] The method for preparing the organic gel matrix includes the following steps:

[0012] S1: Dissolve polyethylene glycol diacrylate particles and ammonium persulfate powder in a solution of polyethylene glycol and water.

[0013] S2: The above solution was stirred at 40°C to obtain a homogeneous solution.

[0014] S3: Add dimethylethylenediamine to the above solution and stir.

[0015] S4: The well-mixed solution is crosslinked at 50°C in an oven for two hours to obtain an organic gel matrix.

[0016] The method for preparing the organic gel ion-conductive layer includes the following steps:

[0017] K1: Add copper chloride, lithium chloride, potassium iodide and dilute hydrochloric acid solution to a mixed solution of polyethylene glycol and water.

[0018] K2: Mix and stir the above solutions to obtain a homogeneous solution.

[0019] K3: Immerse the organic gel matrix in the solution obtained in step K2 for a period of time to obtain an organic gel ion-conductive layer.

[0020] The method for preparing the eyeball-shaped outer shell includes the following steps:

[0021] H1: A titanium dioxide photosensitive layer film was prepared on a transparent conductive layer using a sol-gel spin coating method;

[0022] H2: Preparation of polyethylene glycol diacrylate organic gel matrix via free radical polymerization;

[0023] H3: An organic gel ion-conducting layer was prepared using an immersion method;

[0024] H4: Platinum metal electrodes are deposited on the surfaces of the first and second transparent conductive layers using an evaporation deposition method.

[0025] H5: The first transparent conductive layer, the second transparent conductive layer, the transparent counter electrode layer, the organic gel ion conductive layer, and the photosensitive layer are stacked and encapsulated in sequence, and then connected to an external circuit.

[0026] This sensing device utilizes the photosensitive layer in the bionic eye to generate a photocurrent under illumination, which is collected by an external circuit through an interface barrier. Different photocurrents correspond to different light intensities and can be used to control the system's judgment of incident light intensity, corresponding to the retina of a real human eye. The organic gel ion-conductive layer has high transparency, corresponding to the vitreous humor of a human eye. The metal film formed by the electrodeposition of ions in the organic gel on the surface of the transparent electrode layer can control the incident light flux. The control system can dynamically adjust the incident light flux based on the received light intensity information, corresponding to the pupil of a real human eye. Ultimately, the bionic eye device can realize the judgment of incident light intensity and the regulation of light flux within the same device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of the eyeball-shaped outer shell;

[0028] Figure 2 This is a schematic diagram of the frontal cross-sectional structure of the eyeball-shaped shell;

[0029] Figure 3 The photocurrent generated by the bionic eyeball under different light intensities;

[0030] Figure 4 To maintain the transmittance of the bionic eye at different light flux levels.

[0031] In the picture:

[0032] 1. First transparent conductive layer; 2. Transparent counter electrode layer; 3. Organic gel ion conductive layer; 4. Photosensitive layer; 5. Second transparent conductive layer; 6. Transmission line; 7. Eyeball-shaped outer shell. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] This embodiment provides a sensing device capable of detecting and controlling light intensity, such as... Figure 1-4As shown, the sensing device includes an eyeball-shaped outer shell 7 and a first transparent conductive layer 1 and a second transparent conductive layer 5 disposed opposite to each other inside the eyeball-shaped outer shell 7. An organic gel ion conductive layer 3 is disposed between the first transparent conductive layer 1 and the second transparent conductive layer 5. A transparent counter electrode layer 2 is disposed at one end of the organic gel ion conductive layer 3 near the first transparent conductive layer 1 and is attached to the first transparent conductive layer 1. A photosensitive layer 4 is disposed at one end of the organic gel ion conductive layer 3 away from the first transparent conductive layer 1 and is attached to the second transparent conductive layer 5. A transmission line 6 is disposed on the side of the eyeball-shaped outer shell 7 away from the first transparent conductive layer 1.

[0035] Specifically, it consists of a transparent conductive layer, a transparent counter electrode layer 2, an organic gel ion conductive layer 3, a photosensitive layer, and a transparent conductive layer stacked in sequence. The transmission line connects the two transparent conductive layers to the external control system circuit. The eyeball-shaped shell serves as an encapsulation. Through the adjustment of the external control circuit, the bionic eye device can achieve the dual function of detecting and adjusting the intensity of incident light. The eyeball shell is made of transparent material near the electrodeposition side, providing a path for light transmission.

[0036] The photosensitive layer 4 is composed of a titanium dioxide semiconductor thin film with photoelectric response.

[0037] Among them, the photosensitive layer 4 has a photoelectric response effect, generating photocurrent under illumination and being collected by an external circuit through the interface barrier. Its response results are shown in the attached figure. Figure 3 As shown, different photocurrents correspond to different light intensities, which can be used to control the system's judgment of incident light intensity, corresponding to the retina of the real human eye.

[0038] The organic gel ion-conducting layer 3 contains charge-transporting ions, electrodeposited ions, electrical balance ions, and an organic gel matrix. The organic gel in the organic gel ion-conducting layer 3 is composed of a gel skeleton made of polyethylene glycol diacrylate.

[0039] More specifically, polyethylene glycol and water form a gel solution. The organic gel ion-conductive layer 3 has high transparency, corresponding to the vitreous humor of the human eye. The metal film formed by the electrodeposition of ions in the organic gel on the surface of the transparent counter electrode layer 2 can control the incident light flux. The control system can dynamically adjust the incident light flux according to the received light intensity information. The transmittance under different incident light fluxes can be referred to the appendix. Figure 4 As shown, this corresponds to the pupil of a real human eye.

[0040] The transparent counter electrode layer 2 includes a transparent platinum metal electrode that has an auxiliary electrodeposition function.

[0041] Furthermore, it is prepared on the surface of a transparent electrode by evaporation deposition.

[0042] The method for preparing an organic gel matrix includes the following steps:

[0043] S1: Polyethylene glycol diacrylate particles and ammonium persulfate powder are dissolved in a solution of polyethylene glycol and water.

[0044] S2: The above solution was stirred at 40°C to obtain a homogeneous solution.

[0045] S3: Add dimethylethylenediamine to the above solution and stir.

[0046] S4: The well-mixed solution is crosslinked at 50°C in an oven for two hours to obtain an organic gel matrix.

[0047] The preparation method of the organic gel ion-conducting layer 3 includes the following steps:

[0048] K1: Add copper chloride, lithium chloride, potassium iodide and dilute hydrochloric acid solution to a mixed solution of polyethylene glycol and water.

[0049] K2: Mix and stir the above solutions to obtain a homogeneous solution.

[0050] K3: Immerse the organic gel matrix in the solution obtained in step K2 for a period of time to obtain the organic gel ion-conductive layer 3.

[0051] The method for preparing the eyeball-shaped outer shell includes the following steps:

[0052] H1: A titanium dioxide photosensitive layer film was prepared on a transparent conductive layer using a sol-gel spin coating method;

[0053] H2: Preparation of polyethylene glycol diacrylate organic gel matrix via free radical polymerization;

[0054] H3: Organic gel ion-conducting layer 3 was prepared by immersion method;

[0055] H4: Platinum metal electrodes are deposited on the surfaces of the first transparent conductive layer 1 and the second transparent conductive layer 5 by evaporation coating method;

[0056] H5: The first transparent conductive layer 1, the second transparent conductive layer 5, the transparent counter electrode layer 2, the organic gel ion conductive layer 3, and the photosensitive layer 4 are stacked and encapsulated in sequence, and then connected to an external circuit.

[0057] Furthermore, the specific operation of H2 is as follows: dissolve polyethylene glycol diacrylate particles and ammonium persulfate powder in a solution of polyethylene glycol and water, stir the obtained solution at 40°C to obtain a homogeneous solution, add dimethyl ethylenediamine to the homogeneous solution and stir, and keep the uniformly mixed solution at 50°C in an oven for two hours to crosslink and obtain an organic gel matrix.

[0058] The specific operation of H3 is as follows: add copper chloride, lithium chloride, potassium iodide and dilute hydrochloric acid solution to a mixed solution of polyethylene glycol and water, mix and stir the solution evenly, and then immerse the organic gel matrix in the obtained solution for a period of time to obtain organic gel ion-conductive layer 3.

[0059] It should be noted that the fabrication process uses FTO conductive glass with a thickness of 1.1 mm and a sheet resistance of 7 Ω / □ as the transparent conductive layer. The above selection is used to illustrate the fabrication and implementation scheme of the ultraviolet detector in this scheme.

[0060] The specific steps are as follows:

[0061] 1. A titanium dioxide photosensitive layer film was prepared on a transparent conductive layer using a sol-gel spin coating method.

[0062] 2. Dissolve 2g of polyethylene glycol diacrylate particles and 0.0026g of ammonium persulfate powder in a mixed solution of 6g of polyethylene glycol and 4g of water. Stir the resulting solution at 40℃ to obtain a homogeneous solution. Add 10μL of dimethylethylenediamine to the homogeneous solution and stir. Incubate the well-mixed solution at 50℃ in an oven for two hours to crosslink. Prepare polyethylene glycol diacrylate organic gel by free radical polymerization.

[0063] 3. Add 0.107g copper chloride, 0.106g lithium chloride, 0.001g potassium iodide and 0.9ml dilute hydrochloric acid 0.1mol / L solution to a mixed solution of 5.4g polyethylene glycol and 2.7g water. Mix the solution evenly, and then soak 1g organic gel in the obtained solution for a period of time to obtain organic gel ion-conductive layer 3.

[0064] 4. A platinum thin film electrode is deposited on the surface of the transparent conductive layer using an evaporation deposition method;

[0065] 5. The prepared transparent conductive layer, transparent counter electrode layer 2, organic gel ion conductive layer 3, photosensitive layer, and transparent conductive layer are stacked and encapsulated in sequence, and then connected to an external circuit.

[0066] In use, the photosensitive layer in the bionic eye device exhibits a photoelectric response effect, generating a photocurrent under illumination and being collected by an external circuit through an interface barrier. Different photocurrents correspond to different light intensities, which can be used to control the system's judgment of incident light intensity, corresponding to the retina of a real human eye. The organic gel ion-conductive layer 3 has high transparency, corresponding to the vitreous humor of a human eye. The metal film formed by the electrodeposition of ions in the organic gel on the surface of the transparent counter electrode layer 2 can control the incident light flux. The control system can dynamically adjust the incident light flux according to the received light intensity information, corresponding to the pupil of a real human eye. Ultimately, the bionic eye device can realize the judgment of incident light intensity and the regulation of light flux within the same device.

[0067] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A sensing device capable of detecting and controlling light intensity, characterized in that, The device includes an eyeball-shaped shell (7) and a first transparent conductive layer (1) and a second transparent conductive layer (5) disposed opposite to each other inside the eyeball-shaped shell (7). An organic gel ion conductive layer (3) is disposed between the first transparent conductive layer (1) and the second transparent conductive layer (5). A transparent counter electrode layer (2) is disposed at one end of the organic gel ion conductive layer (3) near the first transparent conductive layer (1) and is attached to the first transparent conductive layer (1). A photosensitive layer (4) is disposed at one end of the organic gel ion conductive layer (3) away from the first transparent conductive layer (1) and is attached to the second transparent conductive layer (5). A transmission line (6) is disposed on the side of the eyeball-shaped shell (7) away from the first transparent conductive layer (1).

2. The sensing device capable of detecting and controlling light intensity according to claim 1, characterized in that: The photosensitive layer (4) is composed of a titanium dioxide semiconductor thin film with photoelectric response.

3. The sensing device capable of detecting and controlling light intensity according to claim 1, characterized in that: The organic gel in the organic gel ion-conductive layer (3) is a gel skeleton composed of polyethylene glycol diacrylate.

4. The sensing device capable of detecting and controlling light intensity according to claim 1, characterized in that: The transparent counter electrode layer (2) includes a transparent platinum metal electrode with an auxiliary electrodeposition function.

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