Non-contact interactive system based on photoelectric sensor array

Abstract

This invention provides a non-contact interactive system based on a photoelectric sensor array, comprising: a photoelectric sensor array, the photoelectric sensor array including: a transparent substrate; a conductive layer formed on the transparent substrate; a patterned confinement layer formed on the conductive layer for forming a patterned array of photoelectric active materials; a patterned array of photoelectric active materials formed on the patterned confinement layer, wherein each patterned unit in the array forms a miniature photoelectric sensor unit under the drive of an external bias voltage; a surface light source located on the back side of the substrate of the photoelectric sensor array; and a reflector movably located on the front side of the substrate of the photoelectric sensor array. This interactive system utilizes the high responsivity and fast response speed characteristics of the photoelectric sensor array to enable the interactive interface to quickly track signals from moving objects, and achieves photocurrent growth through light reflection from the reflector onto the surface light source, thereby realizing a responsive, contactless, three-dimensional human-computer interaction.

Description

Technical Field

[0001] This invention relates to the field of human-computer interaction technology, and in particular to a non-contact interaction system based on a photoelectric sensor array. Background Technology

[0002] A good human-computer interaction process can facilitate information transfer and action execution between humans and machines through an intelligent, fast, and user-friendly interface. Currently, the process of intelligent perception and control between humans and machines often relies on sensors such as sound, light, electricity, and mechanics for signal acquisition and processing, and on the fabrication of independently addressable device arrays to achieve more complex and intelligent human-computer interaction strategies.

[0003] The aforementioned signal transmission and information exchange processes between humans and machines often require input through pressing mechanical buttons. This contact inevitably leads to mechanical wear and fatigue. Furthermore, in special environments such as hospitals and laboratories, the touched surfaces can facilitate the spread of bacteria, viruses, and harmful substances between different groups. Therefore, non-contact sensors are becoming the development trend of human-machine interfaces, such as photoelectric sensors, humidity sensors, and electrostatic sensors. However, the sensitivity of humidity and electrostatic sensors to environmental conditions, their long response times, and short detection distances limit the further development of non-contact human-machine interfaces. In addition, planar sensor arrays often struggle to effectively detect the movement of three-dimensional objects, thus limiting the application scenarios of the interactive interface.

[0004] Therefore, there is an urgent need for a non-contact, responsive human-computer interaction system. Summary of the Invention

[0005] This invention provides a non-contact interactive system based on a photoelectric sensor array, to at least solve one of the problems existing in related technologies. To achieve this objective, this invention is implemented through the following technical solution.

[0006] This invention provides a contactless interactive system based on a photoelectric sensor array, comprising:

[0007] A photoelectric sensor array, comprising: a transparent substrate; a conductive layer formed on the transparent substrate; a patterned confinement layer formed on the conductive layer for selectively wetting or patterning-assistedly forming a patterned array of photoelectric active materials by means of a photoelectric material precursor liquid; the patterned array of photoelectric active materials formed on the patterned confinement layer, wherein each patterned unit in the array forms a miniature photoelectric sensor unit under the drive of an external bias voltage;

[0008] A surface light source, wherein the surface light source is located on the back side of the transparent substrate of the photoelectric sensor array;

[0009] A reflective object, which is movably located on the front side of the transparent substrate of the photoelectric sensor array;

[0010] In this process, some of the photons emitted by the surface light source directly irradiate the photoelectric sensor array to maintain the normal photocurrent level of the photoelectric sensor array, while the other part radiates outward through the transparent substrate of the photoelectric sensor array. When the radiated photons encounter the reflector and are reflected back to the photoelectric sensor array, the photocurrent of the photoelectric sensor array is enhanced.

[0011] Furthermore, the photoelectric sensor array also includes an encapsulation layer formed on the photoelectric active material pattern array to protect the device from external environmental factors such as moisture and oxygen.

[0012] Furthermore, the transparent substrate includes: glass, flexible polymer; the conductive layer includes: an oxide coating including an ITO layer or an FTO layer, an MXene coating, and metal coatings of Au, Ag, Cu, Pt, and Al.

[0013] Furthermore, the patterned confinement layer includes a hydrophobic layer or a spatial confinement template made of polymer, metal, or non-metal.

[0014] Furthermore, the photoactive materials of the photoactive material pattern array include: perovskite single crystals and polycrystalline thin films, inorganic compounds such as CdS, CdSe, ZnS, and GaP, single-component semiconductors such as Si, polymer-based photoelectric materials, etc.

[0015] Furthermore, the reflector includes a human hand, which issues contactless gesture commands to the electrical sensor array by moving in a two-dimensional plane or three-dimensional space. The photons reflected by the human hand change the photocurrent intensity of the photoelectric sensor array, and the gesture interaction is recognized by the change in the photocurrent intensity.

[0016] Furthermore, the non-contact interactive system based on the photoelectric sensor array also includes a data acquisition and processing module, which determines the direction of hand gesture movement based on the spatiotemporal sequence formed by the micro photoelectric sensor units at different locations in the photoelectric sensor array when the photocurrent intensity reaches its peak.

[0017] Furthermore, the non-contact interactive system based on the photoelectric sensor array can be integrated onto the surface of light source devices such as displays and light-emitting panels, and applied to indoor and outdoor scenarios under daylight and nighttime lighting conditions. In nighttime lighting scenarios, the overall photocurrent level decreases, but the reduction in ambient light intensity also helps to improve the response of the photoelectric sensor array to reflected light from the palm surface, ultimately resulting in a photocurrent growth rate comparable to that under ambient light conditions.

[0018] Furthermore, the array units of the photoactive material pattern array are split ring patterns.

[0019] Furthermore, the split ring pattern includes annular shapes such as circular rings, triangular rings, and quadrilateral rings, with dimensions between 5μm and 500μm and ring widths between 1 and 50μm. The annular shapes have gaps, with the minimum size of the gap being 1μm and the maximum being the side length of a polygonal ring or the diameter of a circular ring.

[0020] The embodiments of the present invention have the following beneficial effects:

[0021] (1) The embodiments of the present invention utilize the high responsivity and fast response speed characteristics of the photoelectric sensor array to enable the interactive interface to quickly track the signals of moving objects, and achieve photocurrent growth by reflecting light from a reflective object such as a palm onto the light source, thereby realizing contactless and responsive three-dimensional human-computer interaction.

[0022] (2) The high optical responsivity of the photoelectric sensor array enables it to effectively sense and respond to weak light sources, so that the non-contact interactive system based on the photoelectric sensor array provided in this embodiment of the invention can respond normally in both normal light source environments and weak light source environments at night.

[0023] (3) The high stability of the photoelectric sensor array enables the non-contact interactive system to work stably in complex environments.

[0024] (4) The highly transparent substrate allows the photoelectric sensor array to be used on the surface of objects such as displays and glass, so as to complete the two-dimensional and three-dimensional motion detection of the interactive interface without obstructing other objects.

[0025] (5) The use of a flexible substrate and the high-density crystal film deposited on the substrate enable the interactive system to be applied to curved screens. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a schematic diagram of the structure of a photoelectric sensor array device according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of a three-dimensional gesture recognition system for a cockpit human-machine interface according to an embodiment of the present invention.

[0029] Figure 3 The three-dimensional gesture recognition mechanism of the cockpit human-machine interaction system according to an embodiment of the present invention and the relationship curve between photocurrent and palm distance;

[0030] Figure 4 The photocurrent variation curve of the three-dimensional gesture interaction process of the cockpit human-machine interaction system according to an embodiment of the present invention;

[0031] Figure 5 To characterize the photoelectric performance of the perovskite photoelectric sensor array unit according to an embodiment of the present invention;

[0032] Figure 6 The photocurrent response of 16 perovskite photoelectric sensor array units under illumination and darkness conditions according to an embodiment of the present invention;

[0033] Figure 7 The photocurrent variation of the flexible interactive interface under different bending states according to an embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the various embodiments of the present invention to facilitate a better understanding of this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined with and referenced by each other without contradiction.

[0035] This invention provides a non-contact interactive system based on a photoelectric sensor array. The system includes a photoelectric sensor array, a surface light source, and a reflector. The surface light source and the reflector are located on opposite sides of the photoelectric sensor array; for example, the surface light source is located on the back side of a transparent substrate of the photoelectric sensor array, and the reflector is located on the front side. Photons emitted by the surface light source are distributed as follows: some directly illuminate the photoelectric sensor array to maintain its normal photocurrent level, while others radiate outwards through the transparent substrate. When these radiated photons encounter the reflector and undergo diffuse or specular reflection, they are reflected back to the photoelectric sensor array, thus enhancing the photocurrent. Motion recognition of the reflector is achieved by monitoring changes in photocurrent intensity. In this embodiment, when the reflector is a human hand, the direction of hand movement can be determined by monitoring changes in photocurrent intensity, thereby achieving two-dimensional and three-dimensional gesture recognition. In this embodiment, the interactive system also includes a data acquisition and processing module. This module determines the gesture movement direction based on a spatiotemporal sequence composed of photoelectric sensor units at different locations within the photoelectric sensor array when the photocurrent intensity reaches its peak.

[0036] Figure 1 This is a schematic diagram of the structure of a photoelectric sensor array device according to an embodiment of the present invention. Figure 1 As shown, the photoelectric sensor array includes: a transparent substrate; a conductive layer formed on the transparent substrate; a patterned confinement layer formed on the conductive layer for selectively wetting or pattern confinement to assist in forming a patterned array of photoelectric active materials; and a patterned array of photoelectric active materials formed on the patterned confinement layer, wherein each patterned unit in the array forms a miniature photoelectric sensor unit under the drive of an external bias voltage.

[0037] In this embodiment, the photoelectric sensor array device preferably includes an encapsulation layer formed on a patterned array of photoactive materials. The encapsulation layer can be PDMS, PMMA, or other transparent polymer coatings, used to protect the device from damage caused by external environmental factors such as moisture and oxygen.

[0038] In this embodiment, the transparent substrate includes glass, flexible polymers, etc. The highly transparent substrate allows the photoelectric sensor array to be used on the surface of objects such as displays and glass, enabling two-dimensional and three-dimensional motion detection of the interactive interface without obstructing other objects. Furthermore, the use of a flexible substrate, and the high-density crystalline film deposited on it, allows this interactive system to be applied to curved screens.

[0039] The conductive layer includes ITO layers, FTO and other oxide coatings, MXene coatings, and metal coatings such as Au, Ag, Cu, Pt, and Al. Among these, MXene is a class of two-dimensional inorganic compounds in materials science. These materials consist of transition metal carbides, nitrides, or carbonitrides with a thickness of several atomic layers. MXene is a graphene-like structure obtained by treating the MAX phase. The specific molecular formula of the MAX phase is M... n+1 AX n (n = 1, 2 or 3), where M refers to transition metals from the first few groups, A refers to main group elements, and X refers to C and / or N elements. Due to the strong bond energy of MX and the high chemical reactivity of A, A can be removed from the MAX phase by etching, thus obtaining a graphene-like 2D structure—MXene.

[0040] The patterned confinement layer includes a hydrophobic layer or a spatially confined template composed of polymers, metals, or non-metals. The patterned confinement layer is used to assist in forming a patterned array of photoactive materials through selective wetting or pattern confinement of the photoelectric material precursor solution. The hydrophobic layer may include hydrophobic coatings such as POTS (fluorosilane, 1H,1H,2H,2H-perfluorooctyltriethoxysilane) or OTS (octadecyltrichlorosilane) for selective wetting of the perovskite precursor solution, forming the patterned array of photoactive materials through surface confinement. Optionally, the patterned confinement layer may also be a physically spatially confined template composed of polymers, metals, or non-metals, forming the patterned array of photoactive materials through physical spatial patterns.

[0041] Photoactive materials for patterned arrays of photoactive materials include: perovskite single crystals and polycrystalline thin films, inorganic compounds such as CdS, CdSe, ZnS, and GaP, single-component semiconductors such as Si, and polymer-based photoelectric materials.

[0042] In a preferred embodiment, the array units of the photoactive material pattern array are split-ring patterns. These split-ring patterns facilitate the directional transport of the perovskite precursor solution onto the substrate through selective wetting, thereby achieving high-density perovskite film deposition. The structure of the split rings includes annular patterns such as circular rings, triangular rings, and quadrilateral rings, with dimensions between 5 μm and 500 μm and ring widths between 1 and 50 μm. The annular patterns also have gaps, with a minimum gap size of 1 μm and a maximum size equal to the side length of a polygonal ring or the diameter of a circular ring.

[0043] In the following embodiments, an ITO conductive glass is used as a transparent substrate, on which a perovskite photoconductive photoelectric sensor array is fabricated. The design concept of the present invention is described by taking the application of this photoelectric sensor array device to intelligent interaction between humans and automobiles as an example.

[0044] Due to the specific industry attributes and functional requirements of automotive control screens, driver safety must be the core focus, with other entertainment functions playing a secondary role. This premise dictates that the control screen interface is primarily static, rarely featuring multiple overlapping dynamic windows. Most automotive control screens use capacitive touchscreens, but the types of control gestures are relatively limited, and the interaction process lacks flexibility, requiring the driver to perform touch-based taps and swipes on the screen.

[0045] This invention provides a non-contact three-dimensional gesture recognition system based on a photoelectric sensor array using reflected light. The system includes a transparent photoelectric sensor array, a display (surface light source), and a data acquisition and processing module. Taking a car control screen as an example, it allows for flexible interaction with the car during driving using simple non-contact gestures. A schematic diagram of the three-dimensional gesture recognition system in the cockpit human-machine interface according to an embodiment of this invention is shown below. Figure 2 As shown. This interactive system can recognize swiping gestures in a two-dimensional plane, such as... Figure 2 The up / down swipe gesture indicated by the middle arrow ① is defined as "page up / down". Figure 2 The left / right swipe indicated by the middle arrow ② is defined as "scrolling up / down the screen"; it can also achieve gesture recognition in three-dimensional space, for example... Figure 2 The movement inward along the screen normal, indicated by the middle arrow ③, is defined as the "confirm" command.

[0046] Figure 3 This document describes the three-dimensional gesture recognition mechanism of a cockpit human-machine interface system according to an embodiment of the present invention, and the relationship curve between photocurrent and palm distance. The three-dimensional gesture recognition mechanism is as follows: Figure 3 As shown in (a), due to the device's high transparency and photoresponse, a portion of the photons emitted by the surface light source directly illuminate the photosensitive sensor array, enabling it to reach a stable photocurrent level. The remaining photons penetrate the transparent substrate of the photosensitive sensor array and radiate outwards. When a hand approaches the display, the skin surface diffuses the photons emitted by the surface light source. These reflected photons then re-irradiate the photosensitive sensor array, further increasing the photocurrent intensity. During nighttime driving, the overall photocurrent level decreases due to the absence of sunlight. However, the reduced number of ambient light sources also helps improve the photosensitive sensor array's response to reflected light from the palm surface, ultimately resulting in a photocurrent growth rate comparable to that under daytime conditions. To demonstrate the sensing effect of the interactive system on three-dimensional motion gestures under different driving environments, the distance between the palm and the screen and the corresponding photocurrent data were tested in both daytime and nighttime driving environments, as shown in... Figure 3 As shown in (b), the photocurrent value on the photoelectric sensor array shows a slight increasing trend as the palm gradually approaches the interactive interface from a distance. A significant increase in photocurrent occurs when the palm is 120mm from the screen, reaching its peak at 20mm. The photocurrent growth rate is 7.65% during daytime driving and 7.43% during nighttime driving, indicating that this interaction strategy has good spatial perception and sensitivity under different lighting conditions.

[0047] Figure 4 This is a photocurrent variation curve of a three-dimensional gesture interaction process in a cockpit human-machine interface system according to an embodiment of the present invention. Figure 4As shown, the photocurrent change curves for upward, forward, and leftward movement gestures are displayed from left to right, corresponding to the control commands of page up, confirm, and next screen. As a demonstration, a 2x2 photoelectric sensor array (numbered using row-column mapping, e.g., 1-1, 1-2, 2-1, 2-2) is used for interaction. In this embodiment, the data acquisition and processing module can determine the gesture movement direction based on the time series of moments when the photocurrent intensity reaches its peak, demonstrating the three-dimensional motion sensing capability of this integrated non-contact human-computer interaction system.

[0048] According to embodiments of the present invention, the contactless interactive system based on a photoelectric sensor array possesses a photoelectric sensor array with high optical responsivity characteristics, enabling it to effectively sense and respond to weak light sources. This allows the contactless interactive system to function normally in both normal lighting environments and low-light environments at night. Furthermore, the high stability of the photoelectric sensor array allows the contactless interactive system to operate stably in complex environments. Moreover, the use of a flexible substrate and the high-density crystalline film deposited on the substrate allow the interactive system to be applied to curved screens. The above-mentioned beneficial effects of the present invention will be further illustrated below with relevant experimental data.

[0049] 1. Photoelectric performance of photoelectric sensor array unit

[0050] The normalized photoresponse curves of the perovskite photoelectric sensor array unit in the 350-700nm visible spectral range under a 3V bias voltage are shown below. Figure 5 As shown in (a), this photoelectric sensor exhibits a strong light response to light sources in the 350-530nm range, reaching its peak responsivity around 520nm. This detectable wavelength provides high compatibility for the use of interactive interfaces in everyday environments. The light detection sensitivity of a photoelectric sensor is commonly expressed as specific detectivity (D*), and its formula is:

[0051]

[0052] Where R is the responsivity of the photoelectric sensor, e is the elementary charge, and I dark Here, S represents the dark current of the device, and S represents the effective illumination area of ​​the perovskite film. For example... Figure 5 (b) shows the relationship between different optical power densities and photocurrents (I) of the photoelectric sensor under conditions of 520nm wavelength light source irradiation and 6V bias voltage. light –I dark ), responsivity and specific detectivity D * The correspondence between them. Because photogenerated carriers in a photoelectric sensor can be effectively collected by the electrodes, a large photocurrent value can be generated even under low optical power excitation, with a peak responsivity of 0.56 μW / cm². 2The speed can reach up to 1.44 × 10⁻⁶. 5 mA / W, with a peak specific detectivity of 2.16 × 10⁻⁶. 11 Jones demonstrated that the human-computer interface is extremely sensitive to light sources. Furthermore, to evaluate the photoelectric sensor's tracking response to light signals, the normalized It curves obtained by the photoelectric sensor under 520nm pulsed light illumination at optical switching frequencies of 1Hz, 200Hz, and 1.5kHz were measured. The results are as follows: Figure 5 As shown in (c), with the pulsed light source switching on and off, the photodetector can quickly and accurately detect changes in the light signal and generate a pulsed photocurrent of the same frequency. Even at a pulse frequency of 1.5 kHz, the device can still efficiently detect the light source signal, and this frequency is far higher than the recognition speed of the human eye, verifying the potential of this interactive interface as a gesture motion detection application. Finally, to investigate the stability of the device, we placed the interactive interface in an environment with a temperature of 25℃ and a relative humidity of 50%, and subjected it to pulsed light irradiation for a duration of 6 ks. The light source frequency used was 0.05 Hz, and the bias voltage was 3V. The relevant normalized It curve is shown below. Figure 5 As shown in (d), thanks to the natural resistance of the pure inorganic perovskite CsPbBr3 film to environmental moisture and oxygen, the device still exhibits good reliability and stability after continuous operation.

[0053] 2. Stability test of photoelectric performance between photoelectric sensor arrays

[0054] Human-computer interfaces based on photoelectric sensor arrays need to determine the direction of hand gestures and commands through changes in photocurrent between different arrays. Therefore, the varying degrees of response to light sources among different photoelectric sensor units can increase the risk of misjudgment in the program. To verify the stability of the photoelectric performance among different photoelectric sensor units, the current data of 16 photoelectric sensor units (i.e., detector units) were obtained under both light illumination and shadow conditions (the obstruction was 2 cm away from the photodetector). Figure 6 As shown. The standard deviations of the photocurrent and dark current of the 16 photoelectric sensor units are 9.02 × 10⁻⁶. -8 and 1.16×10 -8 The average on / off ratio is approximately 13.06, indicating low dispersion in current data from different photoelectric sensor units, which effectively reduces program judgment errors caused by heterogeneity in photoelectric performance. Furthermore, the device exhibits excellent optical response, providing a wider range for selecting program judgment thresholds.

[0055] 3. Bending stability test of flexible devices

[0056] Figure 7The diagram illustrates the photocurrent variation of a flexible interactive interface under different bending states according to an embodiment of the present invention. Due to the high crystal quality of the perovskite film and its good contact with the substrate, the device can maintain a relatively stable current value at a certain bending angle, without affecting the device's use in fixed-angle scenarios, such as encapsulating the device on a curved screen that is not repeatedly folded.

[0057] The embodiments of the present invention utilize the high responsivity and fast response speed of the photoelectric sensor array to enable the interactive interface to quickly track the signals of moving objects, and achieve photocurrent growth by reflecting light from a surface light source through a reflective object such as a palm, thereby realizing contactless and responsive three-dimensional human-computer interaction.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-contact interactive system based on a photoelectric sensor array, characterized in that, include: A photoelectric sensor array, comprising: a transparent substrate; a conductive layer formed on the transparent substrate; a patterned confinement layer formed on the conductive layer for selectively wetting or patterning the photoelectric material precursor liquid to assist in forming a patterned array of photoelectric active materials; the patterned array of photoelectric active materials formed on the patterned confinement layer, wherein each patterned unit in the array forms a miniature photoelectric sensor unit under the drive of an external bias voltage; A surface light source, wherein the surface light source is located on the back side of the transparent substrate of the photoelectric sensor array; A reflective object, which is movably located on the front side of the transparent substrate of the photoelectric sensor array; In this process, some of the photons emitted by the surface light source directly irradiate the photoelectric sensor array to maintain the normal photocurrent level of the photoelectric sensor array, while the other part radiates outward through the transparent substrate of the photoelectric sensor array. When the radiated photons encounter the reflector and are reflected back to the photoelectric sensor array, the photocurrent of the photoelectric sensor array is enhanced.

2. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The photoelectric sensor array also includes an encapsulation layer formed on the patterned array of photoactive materials.

3. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The transparent substrate includes: glass and flexible polymer; The conductive layer includes: an oxide plating layer including an ITO layer or an FTO layer, an MXene plating layer, and metal plating layers of Au, Ag, Cu, Pt, and Al.

4. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The patterned confinement layer includes a hydrophobic layer or a spatial confinement template made of polymer, metal, or non-metal.

5. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The photoactive materials in the photoactive material pattern array include: perovskite single crystals and polycrystalline thin films, inorganic compounds CdS, CdSe, ZnS, GaP, single-component semiconductors, and polymer-based photoelectric materials.

6. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The reflective object includes a human hand, which issues contactless gesture commands to the electrical sensor array by moving in a two-dimensional plane or three-dimensional space. The photons reflected by the human hand change the photocurrent intensity of the photoelectric sensor array, and the gesture interaction is recognized by the change in photocurrent intensity.

7. The non-contact interactive system based on a photoelectric sensor array according to claim 6, characterized in that, It also includes a data acquisition and processing module, which determines the direction of hand gesture movement based on the spatiotemporal sequence formed by the micro photoelectric sensor units at different locations in the photoelectric sensor array when the photocurrent intensity reaches its peak.

8. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The interactive system is integrated on the surface of the light source device and can be applied to indoor and outdoor scenarios under daylight and nighttime lighting conditions.

9. The non-contact interactive system based on a photoelectric sensor array according to claim 1, characterized in that, The array unit of the photoactive material pattern array is a split ring pattern.

10. The non-contact interactive system based on a photoelectric sensor array according to claim 9, characterized in that, The split ring pattern includes: circular rings, triangular rings, and quadrilateral rings, with dimensions between 5μm and 500μm and ring widths between 1 and 50μm. The ring pattern has gaps, with the minimum size of the gap being 1μm and the maximum being the side length of the polygonal ring or the diameter of the circular ring.

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