Intelligent thermal pen and target user identification method

Abstract

This invention discloses a smart thermoelectric pen and a target user identification method. The smart thermoelectric pen includes a main body and a thermoelectric component. The thermoelectric component is attached to the main body and includes a flexible substrate, a first thermoelectric thin film, a second thermoelectric thin film, and electrodes. The first thermoelectric thin film, the second thermoelectric thin film, and the electrodes are located on the flexible substrate, with the first and second thermoelectric thin films spaced apart, and the electrodes connected to the first and second thermoelectric thin films. The first and second thermoelectric thin films are used to establish a temperature difference along the length of the electrodes when the smart thermoelectric pen comes into contact with a target user, and output an electrical signal based on the temperature difference. After the smart thermoelectric pen comes into contact with the target user, the target user's temperature can be transferred to the first and second thermoelectric thin films respectively, thereby establishing a temperature difference along the length of the electrodes. According to the first thermoelectric effect, the temperature difference can be converted into an electrical signal and output, thus providing technical support for realizing corresponding interactive functions.

Description

Technical Field

[0001] This invention relates to the field of new energy and thermoelectric device application technology, and in particular to an intelligent thermoelectric pen and a target user identification method. Background Technology

[0002] Thermoelectric power generation is based on the first thermoelectric effect discovered by Thomas Johann Seebeck in 1821. It aims to convert heat energy into electrical energy by applying temperature differences to metals or semiconductors. It features continuous and stable operation, requires no maintenance, is highly adaptable to various environments, and operates without noise. How to apply thermoelectric conversion technology to the field of human-computer interaction has become a topic of ongoing research for scientists. Summary of the Invention

[0003] This invention provides an intelligent thermal pen and a method for identifying target users.

[0004] The intelligent thermometer pen according to embodiments of the present invention includes:

[0005] main body;

[0006] A thermoelectric component is attached to the main body. The thermoelectric component includes a flexible substrate, a first thermoelectric thin film, a second thermoelectric thin film, and an electrode. The first thermoelectric thin film, the second thermoelectric thin film, and the electrode are located on the flexible substrate. The first thermoelectric thin film and the second thermoelectric thin film are spaced apart. The electrode is connected to the first thermoelectric thin film and the second thermoelectric thin film. The first thermoelectric thin film and the second thermoelectric thin film are used to establish a temperature difference along the length direction of the electrode according to the temperature of the target user when the smart thermoelectric pen is in contact with the target user, and output an electrical signal according to the temperature difference.

[0007] In the intelligent thermoelectric pen of the present invention, after the intelligent thermoelectric pen comes into contact with the target user, the temperature of the target user can be transferred to the first thermoelectric film and the second thermoelectric film respectively, thereby establishing a temperature difference in the length direction of the electrodes. According to the first thermoelectric effect, the temperature difference can be converted into an electrical signal and output, thereby providing technical support for realizing the corresponding interactive function.

[0008] In some embodiments, the flexible substrate is attached to the body.

[0009] In some embodiments, the first thermoelectric film and the second thermoelectric film are arranged in parallel.

[0010] In some embodiments, the distance between the first thermoelectric film and the second thermoelectric film is 1 mm to 10 mm.

[0011] In some embodiments, the first end of the first thermoelectric film and the first end of the second thermoelectric film are close to each other, while the second end of the first thermoelectric film and the second end of the second thermoelectric film are far apart from each other.

[0012] In some embodiments, the flexible substrate is made of at least one of polyimide, polyetherimide, polyethylene terephthalate, polyurethane, polyvinylidene fluoride, or polytetrafluoroethylene.

[0013] In some embodiments, the material of the first thermoelectric thin film includes at least one of Bi2Te3, Mg3Sb2, or PEDOT:PSS.

[0014] In some embodiments, the material of the second thermoelectric thin film includes at least one of Bi2Te3, Mg3Sb2, or PEDOT:PSS.

[0015] In some embodiments, the electrode material includes at least one of Au, Pd, Pt, Al, Cu, Ni, or Ti thin films.

[0016] The target user identification method of this invention includes:

[0017] Obtain the electrical signal of the intelligent thermostat described in any of the above embodiments;

[0018] An initial model is trained using a portion of the aforementioned electrical signals to obtain a prediction model;

[0019] Another portion of the electrical signal is input into the prediction model, and the target user is identified based on the output of the prediction model.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the intelligent thermometer pen according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the intelligent thermometer pen according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram showing the connection relationship between the computer device and the intelligent thermal pen according to an embodiment of the present invention.

[0025] Figure 4This is a flowchart illustrating the target user identification method according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of electrical signals collected by a smart thermometer pen from different target users within a certain period of time in an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram illustrating the accuracy analysis of target user identification in an embodiment of the present invention.

[0028] Explanation of key component symbols:

[0029] Intelligent thermoelectric pen 100; main body 10; thermoelectric component 20; flexible substrate 21; first thermoelectric thin film 22; second thermoelectric thin film 23; electrode 24; first end 220 of the first thermoelectric thin film; first end 230 of the second thermoelectric thin film; second end 221 of the first thermoelectric thin film; second end 231 of the second thermoelectric thin film; computer device 300; processor 310; memory 320. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0035] The inventors have discovered that piezoelectric and triboelectric effects-based mechanical sensing electronics are widely used in the field of human-computer interaction. These mechanical sensing electronics can achieve relatively fast mechanical signal acquisition and conversion, but their intermittent electrical output is easily limited by external environmental noise interference, resulting in a poor signal-to-noise ratio.

[0036] In view of this, the inventors designed an intelligent thermoelectric pen based on thermoelectric technology, which enables the thermoelectric pen to have continuous time-domain signal output and strong environmental anti-interference ability, while greatly expanding the applicable range of thermoelectric materials.

[0037] Please see Figure 1The intelligent thermoelectric pen 100 of this invention includes a main body 10 and a thermoelectric component 20. The thermoelectric component 20 is attached to the main body 10 and includes a flexible substrate 21, a first thermoelectric thin film 22, a second thermoelectric thin film 23, and an electrode 24. The first thermoelectric thin film 22, the second thermoelectric thin film 23, and the electrode 24 are located on the flexible substrate 21, with the first thermoelectric thin film 22 and the second thermoelectric thin film 23 spaced apart, and the electrode 24 connected to the first thermoelectric thin film 22 and the second thermoelectric thin film 23. The first thermoelectric thin film 22 and the second thermoelectric thin film 23 are used to establish a temperature difference along the length h of the electrode 24 when the intelligent thermoelectric pen 100 is in contact with a target user, and output an electrical signal based on the temperature difference.

[0038] In the intelligent thermoelectric pen 100 of the present invention, after the intelligent thermoelectric pen 100 comes into contact with the target user, the temperature of the target user can be transferred to the first thermoelectric film 22 and the second thermoelectric film 23 respectively, thereby establishing a temperature difference in the length direction h of the electrode 24. According to the first thermoelectric effect, the temperature difference can be converted into an electrical signal and output, thereby providing technical support for realizing the corresponding interactive function.

[0039] Specifically, the main body 10 of the intelligent thermoelectric pen 100 can be a pencil, ballpoint pen, fountain pen, marker, or rollerball pen, etc. The main body 10 can be in a regular shape such as a long strip or cylinder, or it can be an irregular shape. The thermoelectric component 20 is a component capable of converting heat energy into electrical energy. Specifically, based on the first thermoelectric effect, a temperature difference is established along the length direction h of the electrode 24, thereby realizing the conversion of heat energy into electrical energy. Part of the structure of the thermoelectric component 20 has a certain degree of flexibility so that the thermoelectric component 20 can be attached to the main body 10; the attachment method can be adhesive bonding.

[0040] Please see Figure 1 Optionally, the flexible substrate 21 can be attached to the main body 10, and the attachment method can be adhesive bonding. The flexible substrate 21 refers to a base for a thermoelectric component 20 based on a flexible material. Traditional thermoelectric component bases typically use rigid materials such as ceramics and metals. These materials have high thermal conductivity and mechanical strength, but lack flexibility and cannot meet the needs of the smart thermoelectric pen 100. The flexible substrate 21, on the other hand, uses a flexible material. In one embodiment, the flexible substrate 21 may include at least one of polyimide, polyetherimide, polyethylene terephthalate, polyurethane, polyvinylidene fluoride, or polytetrafluoroethylene. Flexible substrates 21 made of these materials have good flexibility and plasticity, and can adapt to the needs of smart thermoelectric pens 100 with various complex shapes.

[0041] It is understood that the flexible substrate 21 can improve the flexibility and plasticity of the thermoelectric component 20, enabling it to adapt to electronic devices of various complex shapes. The flexible substrate 21 can also improve the thermoelectric performance of the thermoelectric component 20. Because the flexible substrate 21 has a low thermal conductivity, it can reduce the heat loss of the thermoelectric component 20, thereby improving the thermoelectric conversion efficiency of the thermoelectric component 20.

[0042] Please see Figure 1 and Figure 2 The maximum projected areas of the first thermoelectric thin film 22 and the second thermoelectric thin film 23 may be the same or different. The first thermoelectric thin film 22 and the second thermoelectric thin film 23 each comprise two different types of semiconductor materials; for example, the first thermoelectric thin film 22 may be made of a p-type semiconductor material, and the second thermoelectric thin film 23 may be made of an n-type semiconductor material. In the thermoelectric assembly 20, the p-type semiconductor material layer can form a pn structure with the n-type semiconductor material layer.

[0043] In this context, p-type and n-type materials refer to two types of semiconductor materials with different electronic structures. P-type materials are doped with electron-deficient impurities, such as aluminum and boron, which form holes in the crystal lattice; therefore, holes are the primary charge carriers in p-type materials. Conversely, n-type materials are doped with electron-rich impurities, such as phosphorus and silicon, which form free electrons in the crystal lattice; therefore, electrons are the primary charge carriers in n-type materials. When heat is applied to the pn structure, voltage and current are generated, thus converting heat energy into electrical energy.

[0044] Optionally, the material of the first thermoelectric thin film 22 includes at least one of Bi2Te3, Mg3Sb2, or PEDOT:PSS. These materials have excellent thermoelectric properties, which can improve the efficiency of heat energy conversion into electrical energy in the thermoelectric component 20. Among them, Bi2Te3 has high thermoelectric conversion efficiency and high thermal stability, and is usually used as a p-type material; Mg3Sb2 has high thermoelectric conversion efficiency and good mechanical properties, and is usually used as an n-type material; PEDOT:PSS is a high-performance organic conductive material with high conductivity and transparency.

[0045] Optionally, the material of the second thermoelectric thin film 23 includes at least one of Bi2Te3, Mg3Sb2, or PEDOT:PSS. The specific effect of the material is the same as that of the first thermoelectric thin film 22. The first thermoelectric thin film 22 and the second thermoelectric thin film 23 can each be made of corresponding materials to realize the process of converting heat energy into electrical energy. For example, the first thermoelectric thin film 22 is made of Bi2Te3 material, and the second thermoelectric thin film 23 is made of Mg3Sb2. A pn ​​structure is formed between the first thermoelectric thin film 22 and the second thermoelectric thin film 23, thereby realizing the process of converting heat energy into electrical energy.

[0046] Optionally, the electrode 24 may be made of at least one of Au, Pd, Pt, Al, Cu, Ni, or Ti thin films. Electrodes 24 made of these materials exhibit good conductivity and stability, thereby improving thermoelectric conversion efficiency. Furthermore, these materials also possess good chemical stability and corrosion resistance, allowing for use in complex environments. Electrodes 24 prepared using these materials can improve the sensitivity, response speed, and stability of the intelligent thermoelectric pen 100, while reducing noise and distortion during the thermoelectric conversion process, thus enhancing the overall performance and reliability of the intelligent thermoelectric pen 100.

[0047] The first thermoelectric thin film 22, the second thermoelectric thin film 23, and the electrode 24 can be disposed on the flexible substrate 21 in various ways, depending on the materials used and the fabrication process. A common method is to use evaporation deposition, heating the thin film and electrode 24 materials to their evaporation temperature and then depositing them on the flexible substrate 21 to form the desired structure. Another method is to use electrochemical deposition, applying a voltage to an electrolyte to deposit material ions between the electrode 24 and the flexible substrate 21 to form the thin film and electrode 24. In addition, physical vapor deposition, magnetron sputtering, and other techniques can also be used. When selecting a fabrication method, factors such as material suitability, fabrication efficiency, and cost need to be considered.

[0048] Optionally, the first thermoelectric thin film 22, the second thermoelectric thin film 23, and the electrode 24 can be disposed on the same side of the flexible substrate 21. This results in lower thermal resistance of the thermoelectric component 20, thereby improving thermoelectric conversion efficiency. Simultaneously, this arrangement allows the thermoelectric component 20 to adhere more tightly to the body 10, further enhancing thermoelectric conversion efficiency.

[0049] Please see Figure 1 and Figure 2 The first thermoelectric film 22 and the second thermoelectric film 23 can be spaced apart along a preset direction, which can be the length or width direction of the first thermoelectric film 22 or the second thermoelectric film 23. The length direction h of the electrode 24 can be parallel or perpendicular to the preset direction. Optionally, the first thermoelectric film 22 and the second thermoelectric film 23 are arranged in parallel, which makes the structure of the thermoelectric component 20 compact, reduces the volume and weight of the thermoelectric component 20, thereby reducing the volume and weight of the smart thermoelectric pen 100, and thus improving the portability and ease of use of the smart thermoelectric pen 100.

[0050] Furthermore, the distance d between the first thermoelectric film 22 and the second thermoelectric film 23 is 1mm to 10mm. Within this range, heat can be effectively transferred between the first thermoelectric film 22 and the second thermoelectric film 23. It can be understood that the thermoelectric conversion efficiency increases as the distance d decreases. However, when the distance d is too small, for example, when the distance d is less than 1mm, due to the limited thermal conductivity of the thermoelectric material, heat cannot be effectively transferred between the two thermoelectric films, thus affecting the thermoelectric conversion efficiency. When the distance d is greater than 10mm, the thermoelectric conversion efficiency cannot meet the electrical signal requirements of the intelligent thermoelectric pen 100.

[0051] Along the length direction h of electrode 24, the first thermoelectric film 22 and the second thermoelectric film 23 can be connected to both ends of electrode 24 respectively. When the target user comes into contact with the smart thermoelectric pen 100, different temperatures can be generated on the first thermoelectric film 22 and the second thermoelectric film 23, thereby establishing a temperature difference along the length direction h of electrode 24, and outputting an electrical signal according to the temperature difference.

[0052] Please see Figure 2 In some embodiments, the first end 220 of the first thermoelectric film 22 and the first end 230 of the second thermoelectric film 23 are close to each other, while the second end 221 of the first thermoelectric film 22 and the second end 231 of the second thermoelectric film 23 are far apart from each other.

[0053] This reduces the spacing between the thermoelectric thin films, thereby improving the thermoelectric conversion efficiency between them. Furthermore, the material loss of the electrode 24 is reduced, thus lowering the manufacturing cost of the thermoelectric assembly 20.

[0054] Specifically, the first end 220 and the second end 221 of the first thermoelectric film 22 can be two ends in the length or width direction of the first thermoelectric film 22. Similarly, the first end 230 and the second end 231 of the second thermoelectric film 23 can be two ends in the length or width direction of the second thermoelectric film 23.

[0055] Please see Figure 3 The target user identification method of this invention includes:

[0056] S10, Obtain the electrical signal of the smart thermal pen 100 according to any of the above embodiments;

[0057] S20, using a portion of the electrical signal to train the initial model and obtain the prediction model;

[0058] S30, another part of the electrical signal is input into the prediction model, and the target user is identified based on the output of the prediction model.

[0059] Please refer to Figure 4In some embodiments, the processor 310 is used to acquire electrical signals from the smart thermal pen 100 of any of the above embodiments; to train an initial model using a portion of the electrical signals and obtain a prediction model; and to input another portion of the electrical signals into the prediction model and identify the target user based on the output of the prediction model.

[0060] Thus, based on the electrical signals generated by different target users touching the smart thermal pen 100, the prediction model can output different results, thereby achieving the identification of different target users.

[0061] Specifically, please refer to Figure 4 The target user identification method can be implemented using a computer device 300, which includes a memory 320 and a processor 310. The processor 310 executes a calculation program stored in the memory 320. Furthermore, the processor 310 can execute any step in the target user identification method to implement the target user identification method described in the above embodiments.

[0062] When different target users come into contact with the intelligent thermal pen 100, the intelligent thermal pen 100 can collect different temperature information according to the different pen-holding postures and writing habits of the target users, and convert this information into electrical signals. The computer device 300 can be connected to the intelligent thermal pen 100 via wired or wireless means, so that the processor 310 can obtain the electrical signals of the intelligent thermal pen 100.

[0063] The memory 320 can store an initial model, such as a machine learning model (ML model). When the processor 310 acquires the electrical signal from the smart thermal pen 100, it extracts a portion of the electrical signal to train the initial model. By extracting features from the electrical signal and then performing machine learning classification, a predictive model is obtained. Further, the processor 310 inputs another portion of the electrical signal into the predictive model, which then makes predictions based on this portion of the electrical signal, thereby establishing a one-to-one correspondence between the electrical signal and the target user, and ultimately achieving the identification of the target user.

[0064] Please refer to Figure 5 , Figure 5 This diagram illustrates the differences in electrical signals when different target users use the same smart thermal pen. The horizontal axis represents writing time, and the vertical axis represents the magnitude of the electrical signal. U1 to U5 represent different target users. It can be seen that within the time range of 0 seconds to 200 seconds, the electrical signals of different target users using the smart thermal pen exhibit significant differences. These differences can be used to identify the target user.

[0065] Please see Figure 6The horizontal axis represents the actual labels of the target users, and the vertical axis represents the predicted labels of the target users. U1 to U5 represent different target users. It can be seen that the target user identification method of this invention can achieve an accuracy of 99.8% when identifying five different users.

[0066] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0067] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processing module, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0068] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0069] It should be understood that various parts of the embodiments of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0070] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Although embodiments of the invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A smart thermostat pen, characterized in that, include: main body; A thermoelectric component is attached to the main body. The thermoelectric component includes a flexible substrate, a first thermoelectric thin film, a second thermoelectric thin film, and an electrode. The first thermoelectric thin film, the second thermoelectric thin film, and the electrode are located on the flexible substrate. The first thermoelectric thin film and the second thermoelectric thin film are spaced apart. The electrode is connected to the first thermoelectric thin film and the second thermoelectric thin film. The first thermoelectric thin film and the second thermoelectric thin film are used to establish a temperature difference along the length direction of the electrode according to the temperature of the target user when the smart thermoelectric pen is in contact with the target user, and output an electrical signal according to the temperature difference.

2. The intelligent thermostat pen according to claim 1, characterized in that, The flexible substrate is attached to the main body.

3. The intelligent thermostat pen according to claim 1, characterized in that, The first thermoelectric film and the second thermoelectric film are arranged in parallel.

4. The intelligent thermostat pen according to claim 3, characterized in that, The distance between the first thermoelectric film and the second thermoelectric film is 1 mm to 10 mm.

5. The intelligent thermostat pen according to claim 1, characterized in that, The first end of the first thermoelectric film and the first end of the second thermoelectric film are close to each other, while the second end of the first thermoelectric film and the second end of the second thermoelectric film are far apart from each other.

6. The intelligent thermostat pen according to claim 1, characterized in that, The flexible substrate is made of at least one of polyimide, polyetherimide, polyethylene terephthalate, polyurethane, polyvinylidene fluoride, or polytetrafluoroethylene.

7. The intelligent thermostat pen according to claim 1, characterized in that, The material of the first thermoelectric thin film includes at least one of Bi2Te3, Mg3Sb2 or PEDOT:PSS.

8. The intelligent thermostat pen according to claim 1, characterized in that, The material of the second thermoelectric thin film includes at least one of Bi2Te3, Mg3Sb2, or PEDOT:PSS.

9. The intelligent thermostat pen according to claim 1, characterized in that, The electrode material includes at least one of Au, Pd, Pt, Al, Cu, Ni, or Ti thin films.

10. A method for identifying target users, characterized in that, include: Obtain the electrical signal of the intelligent thermostat according to any one of claims 1-9; An initial model is trained using a portion of the aforementioned electrical signals to obtain a prediction model; Another portion of the electrical signal is input into the prediction model, and the target user is identified based on the output of the prediction model.

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