Stretchable sensing structure and manufacturing method thereof

Abstract

A stretchable sensing structure (100) and a manufacturing method thereof, wherein the stretchable sensing structure (100) comprises: a stretchable sensing array (110), wherein the stretchable sensing array (100) comprises: at least two first sensing electrodes (10) arranged in an array; the first sensing electrodes (10) are used to sense different physiological signals; each first sensing electrode (10) comprises a first stretchable substrate layer, a pre-stretched pattern layer formed on the first stretchable substrate layer, and an electrode sheet formed on the first stretchable substrate layer and electrically contacting the pre-stretched pattern layer, wherein the electrode sheet is made of carbon paste; a plurality of signal transmission lines (20), wherein two adjacent first sensing electrodes (10) are electrically connected via the signal transmission lines (20); and a signal processing element (130); wherein the first sensing electrodes (10) are electrically connected to the signal processing element (130) via the signal transmission lines (20). The stretchable sensing structure (100) has good stretchability, diverse sensing functions, and variable resistance.

Description

Technical Field

[0001] The present application relates to a stretchable sensing structure and a method for manufacturing the same. Background Art

[0002] With the advent of artificial sensing skin, smart skin, robotic arms, smart wearable clothing, etc., people are increasingly demanding wearable smart fabrics with sensing functions. However, the sensing function of the sensing structure of general wearable smart fabrics is single and the stretchability of the sensing structure itself is poor, which cannot simultaneously meet people's needs for both the stretchability of the sensing structure and the diversity of sensing functions. In addition, the resistance required to sense the electrocardiogram of a person when they are static (sleeping) is 50-100Ω / □, and the resistance required to sense the electrocardiogram of a person when they are dynamic (exercise) must be increased to 300-500Ω / □, while the resistance of the sensing structure in the existing technology is not variable. Summary of the Invention

[0003] In view of the above, it is necessary to provide a stretchable sensing structure with good stretchability, diverse sensing functions and variable resistance.

[0004] It is also necessary to provide a method for fabricating a stretchable sensing structure.

[0005] A stretchable sensing structure comprises: at least one stretchable sensing array, each of the stretchable sensing arrays comprising: at least two first sensing electrodes arranged in an array; the first sensing electrodes are used to sense different physiological signals; each of the first sensing electrodes comprises a first stretchable substrate layer, a pre-stretched pattern layer formed on the first stretchable substrate layer, and an electrode sheet formed on the first stretchable substrate layer and electrically contacting the pre-stretched pattern layer, the electrode sheet being made of carbon paste; a plurality of signal transmission lines, two adjacent first sensing electrodes being electrically connected via at least one of the signal transmission lines; and at least one signal processing element; a first sensing electrode is electrically connected to the signal processing element via one of the signal transmission lines; the signal processing element is used to receive and analyze the physiological signals.

[0006] Furthermore, each of the stretchable sensing arrays also includes at least one second sensing electrode; the first sensing electrodes and the second sensing electrodes are arranged in an array; the second sensing electrodes are used to sense different physiological signals; two adjacent second sensing electrodes or one adjacent first sensing electrode and one adjacent second sensing electrode are electrically connected through at least one signal transmission line.

[0007] Furthermore, the second sensing electrode includes a deformable substrate, at least one zinc oxide layer formed on the deformable substrate, and at least one silver layer formed on the zinc oxide layer.

[0008] Furthermore, the signal transmission line includes a second stretchable substrate layer and a first stretchable circuit layer formed on the second stretchable substrate layer, and the material of the first stretchable circuit layer is silver paste.

[0009] Furthermore, the first stretching circuit layer includes a plurality of first stretching circuits, each of which has a first connection contact formed at both ends, and the first connection contact is electrically connected to the electrode sheet; the signal transmission line also includes a first insulating layer formed on the first stretching circuit layer; the material of the first insulating layer is thermoplastic polyurethane or rubber.

[0010] Furthermore, the signal transmission line also includes a second stretching circuit layer formed on the first insulating layer and a second insulating layer formed on the second stretching circuit layer; the second stretching circuit layer includes a plurality of second stretching circuits, each of the second stretching circuits has a second connecting contact formed at both ends, and the first connecting contact and the second connecting contact are bonded together up and down.

[0011] Furthermore, the stretchable sensing structure further includes at least one control valve, which is disposed on the signal transmission line and is used to control the magnitude of the current flowing through the signal transmission line, thereby controlling the resistance of the sensing electrode.

[0012] A method for manufacturing a stretchable sensing structure as described above includes the following steps: providing at least two first sensing electrodes; the first sensing electrodes are used to sense different physiological signals; each of the first sensing electrodes includes a first stretchable substrate layer, a pre-stretched pattern layer formed on the first stretchable substrate layer, and an electrode sheet formed on the first stretchable substrate layer and electrically contacting the pre-stretched pattern layer, wherein the electrode sheet is made of carbon paste; providing multiple signal transmission lines, and electrically connecting two adjacent first sensing electrodes through at least one of the signal transmission lines; and providing at least one signal processing element, and electrically connecting one of the first sensing electrodes and the signal processing element through one of the signal transmission lines.

[0013] Furthermore, the method for manufacturing the first sensing electrode includes: providing a first stretchable substrate layer; forming a pre-stretched pattern layer at a predetermined position of the first stretchable substrate layer; applying carbon paste at a predetermined position of the first stretchable substrate layer to form an electrode sheet, one end of the electrode sheet being electrically connected to the pre-stretched pattern layer; and applying the stretch covering film on the pre-stretched pattern layer exposed outside the electrode sheet to obtain the first sensing electrode.

[0014] Furthermore, the method for manufacturing the signal transmission line includes: providing a substrate; coating a stretchable substrate on the substrate to obtain the second stretchable substrate layer; screen printing silver paste on the second stretchable substrate layer to form the first stretchable circuit layer; and drying the substrate with the second stretchable substrate layer and the first stretchable circuit layer, and removing the substrate to obtain the signal transmission line including the second stretchable substrate layer and the first stretchable circuit layer.

[0015] The present application provides a stretchable sensing structure and a manufacturing method thereof, 1) its sensing electrode includes a first stretchable substrate layer, a pre-stretched pattern layer formed on the first stretchable substrate layer, and an electrode sheet formed on the first stretchable substrate layer and electrically contacting the pre-stretched pattern layer, so that the sensing electrode can be stretched; 2) the stretchable sensing structure includes at least two types of sensing electrodes, so that the stretchable sensing structure is used to sense different physiological signals, thereby achieving diverse sensing functions; 3) two adjacent sensing electrodes are electrically connected through a signal transmission line, and the signal transmission line includes a second stretchable substrate layer and a first stretchable circuit layer formed on the second stretchable substrate layer, the material of the first stretchable circuit layer is silver paste, so that the signal transmission line can be stretched, and thus the stretchable sensing structure can be stretched, so that the stretchable sensing structure has variable resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a module of a stretchable sensing structure provided in the first embodiment of the present application.

[0017] Figure 2 Schematic diagram of a stretchable sensing array provided in the first embodiment of the present application before and after stretching.

[0018] Figure 3 for Figure 1 A cross-sectional view of a sensing electrode in a stretchable sensing structure is shown.

[0019] Figure 4 FIG. 4 is a cross-sectional view of a sensing electrode without the stretched cover film.

[0020] Figure 5 for Figure 1 A cross-sectional view of a signal transmission line (including a stretchable circuit layer) in a stretchable sensing structure is shown.

[0021] Figure 6 for Figure 5 A top view of the signal transmission line is shown.

[0022] Figure 7 for Figure 1A cross-sectional view of a signal transmission line (including multiple stretchable circuit layers) in a stretchable sensing structure is shown.

[0023] Figure 8 for Figure 7 An enlarged schematic diagram of a signal transmission line (including multiple stretchable circuit layers) is shown.

[0024] Figure 9 for Figure 1 A cross-sectional view of a signal transmission line (including multiple stretchable circuit layers and studs) in a stretchable sensing structure is shown.

[0025] Figure 10 A cross-sectional view of a substrate.

[0026] Figure 11 For Figure 10 A cross-sectional view of a substrate after a first stretchable substrate layer is formed on the substrate is shown.

[0027] Figure 12 For Figure 11 A cross-sectional view of a first stretchable circuit layer formed on a first stretchable substrate layer is shown.

[0028] Figure 13 A schematic diagram of a module of a stretchable sensing structure provided in the second embodiment of the present application.

[0029] Figure 14 for Figure 13 FIG. 4 is a cross-sectional view of a second sensing electrode shown in FIG.

[0030] Figure 15 This is a schematic diagram of a module of a stretchable sensing structure provided in the third embodiment of the present application.

[0031] Description of main component symbols

[0032] Stretchable sensing structures 100，200，300 Stretchable sensing array 110，120，140 first sensing electrode 10 First stretchable substrate layer 12 Pre-stretched pattern layer 13 Electrode 14 Stretch cover film 15 signal transmission line 20 substrate 11 Second stretchable substrate layer 21 The first tensile circuit layer 22 First stretching line 221 First Contact 222 First insulating layer 23 Second tensile circuit layer 24 Second stretching line 241 Second Contact 242 Second insulating layer 25 buttoning 26 Conductive part 261 Decoration Department 262 Second sensing electrode 30 Deformable substrate 31 zinc oxide layer 32 Silver layer 33 control valves 40 Signal processing components 130

[0033] The following specific implementation methods will further illustrate this application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It should be noted that when an element is considered to be “connected” to another element, it may be directly connected to the other element or there may be a centrally disposed element. When an element is considered to be “disposed on” another element, it may be directly disposed on the other element or there may be a centrally disposed element.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] See also Figure 1-6 The present application provides a stretchable sensing structure 100, which is applied to a wearable smart fabric (not shown) to sense different physiological signals of the human body in different states.

[0038] See also Figure 1 The stretchable sensing structure 100 includes at least one stretchable sensing array 110. The stretchable sensing array 110 includes at least two first sensing electrodes 10 and a plurality of signal transmission lines 20, and two adjacent first sensing electrodes 10 are electrically connected via at least one of the signal transmission lines 20.

[0039] The stretchable sensing structure 100 further includes at least one signal processing element 130 . The signal processing element 130 is electrically connected to the first sensing electrode 10 via at least one signal transmission line 20 .

[0040] In this embodiment, the stretchable sensing structure 100 includes two stretchable sensing arrays 110 and one signal processing element 130. Each stretchable sensing array 110 includes nine first sensing electrodes 10 and 13 signal transmission lines 20. The nine first sensing electrodes 10 are arranged in a 3*3 array.

[0041] In other embodiments, the number of the stretchable sensing array 110 and the signal processing element 130 is not limited to 2 and 1, the number of the first sensing electrodes 10 and the signal transmission lines 20 is not limited to 9 and 11, and the array arrangement of the first sensing electrodes 10 is not limited to a 3*3 array, but can be determined according to actual conditions.

[0042] See also Figure 2 , wherein the stretchable sensing array 110 can be deformed under the action of an external force and return to its initial state after the external force is removed.

[0043] See also Figure 3 Each of the first sensing electrodes 10 includes a first stretchable substrate layer 12, a pre-stretched pattern layer 13 formed on the first stretchable substrate layer 12, and an electrode sheet 14 formed on the first stretchable substrate layer 12 and electrically contacting the pre-stretched pattern layer 13.

[0044] In this embodiment, the first sensing electrode 10 is used to sense current signals, such as: electrocardiogram (ECG), electromyography (EMG), respiratory rate, oscillatory eye signal (EOG), brain wave signal (EEG), induced brain wave signal (EEG), etc.

[0045] The first stretchable substrate layer 12 is stretched when subjected to an external force, and returns to its original state after the external force is removed.

[0046] The first stretchable substrate layer 12 may be made of thermoplastic polyurethane (TPU), rubber, or other materials that stretch when subjected to an external force and return to their original state after the external force is removed.

[0047] The pre-stretched pattern layer 13 is made of silver paste.

[0048] The electrode sheet 14 is made of carbon paste.

[0049] Each of the first sensing electrodes 10 further includes a stretchable cover film 15, which covers the pre-stretched pattern layer 13 exposed outside the electrode sheet 14. The stretchable cover film 15 is used to protect the pre-stretched pattern layer 13 to prevent the pre-stretched pattern layer 13 from being oxidized.

[0050] The stretch cover film 15 is made of TPU, rubber, etc.

[0051] The first stretchable substrate layer 12 and the pre-stretched pattern layer 13 are capable of stretching. According to the resistance formula R = ρL / S, where ρ is the resistivity, L is the length of the resistor, and S is the cross-sectional area of ​​the resistor, when the first stretchable substrate layer 12 and the pre-stretched pattern layer 13 are stretched, L increases and S decreases. While ρ remains constant, R increases, thereby obtaining a stretchable sensing structure 100 with variable resistance.

[0052] Among them, see Figure 5-6 The signal transmission line 20 includes a second stretchable substrate layer 21 and a first stretchable circuit layer 22 formed on the second stretchable substrate layer 21 .

[0053] The second stretchable substrate layer 21 may be made of thermoplastic polyurethane (TPU), rubber, or other materials that stretch when subjected to an external force and return to their original state after the external force is removed.

[0054] The first tensile circuit layer 22 is made of silver paste.

[0055] The first stretching circuit layer 22 includes a plurality of first stretching circuits 221 . A first connection contact 222 is formed at both ends of each first stretching circuit 221 . The first connection contact 222 is used to electrically connect to the electrode sheet 14 .

[0056] The plurality of first stretching lines 221 may be electrically connected via the first connecting contacts 222 , or may not be electrically connected.

[0057] In this embodiment, the first stretching line 221 is in a horseshoe shape. In other embodiments, the first stretching line 221 can also be in a straight line shape or a zigzag shape.

[0058] The widths of the first stretch lines 221 can be different or the same. In this embodiment, the widths of the first stretch lines 221 are 3 mm, 1 mm, 0.7 mm, 0.5 mm, and 0.3 mm. In other embodiments, the widths of the first stretch lines 221 are not limited to the above values.

[0059] See also Figure 7-8 In another embodiment, the signal transmission line 20 further includes a first insulating layer 23 formed on the first stretching circuit layer 22, a second stretching circuit layer 24 formed on the first stretching circuit layer 23, and a second insulating layer 25 formed on the second stretching circuit layer 24.

[0060] The first insulating layer 23 and the second insulating layer 25 are made of TPU, rubber, etc.

[0061] The second tensile circuit layer 24 is made of silver paste.

[0062] The second tensile circuit layer 24 includes a plurality of second tensile circuits 241 . A second connecting contact 242 is formed at both ends of each second tensile circuit 241 . The first connecting contact 222 and the second connecting contact 242 are laminated to each other.

[0063] In this embodiment, the second stretching line 241 is horseshoe-shaped. In other embodiments, the second stretching line 241 can also be formed in a straight line or a zigzag shape.

[0064] The widths of the plurality of second stretch lines 241 can be different or the same. In this embodiment, the widths of the plurality of second stretch lines 241 are 3 mm, 1 mm, 0.7 mm, 0.5 mm, and 0.3 mm. In other embodiments, the widths of the plurality of second stretch lines 241 are not limited to the above values.

[0065] In other embodiments, the signal transmission line 20 further includes more tensile circuit layers and insulation layers.

[0066] See also Figure 9 In another embodiment, the signal transmission line 20 further includes at least one nail button 26, the nail button 26 includes a conductive portion 261 and a decorative portion 262, the conductive portion 261 is vertically connected to the decorative portion 262, and the conductive portion 261 is electrically connected to the second tensile circuit layer 24 and the first tensile circuit layer 22.

[0067] In this embodiment, the decorative portion 262 is elliptical in shape, and is used to beautify the appearance of the stretchable sensing structure 100 .

[0068] See also Figure 3-Figure 6 and Figure 11-12 The present application also provides a method for manufacturing the stretchable sensing structure 100, comprising the following steps:

[0069] In the first step, a plurality of first sensing electrodes 10 as described above are provided.

[0070] The second step is to provide a plurality of signal transmission lines 20 as described above.

[0071] The third step is to provide a plurality of signal processing elements 130 as described above.

[0072] In the fourth step, a plurality of the first sensing electrodes 10 as described above are arranged in an array, and two adjacent first sensing electrodes 10 are electrically connected through at least one of the signal transmission lines 20 , and the signal processing element 130 is electrically connected to one of the first sensing electrodes 10 through at least one of the signal transmission lines 20 .

[0073] See also Figure 3-Figure 4 The first sensing electrode 10 is manufactured by the following steps:

[0074] First, see Figure 4 , providing a first stretchable substrate layer 12, forming a pre-stretched pattern layer 13 at a predetermined position of the first stretchable substrate layer 12, and coating carbon paste at a predetermined position of the first stretchable substrate layer 12 to form an electrode sheet 14, so that one end of the electrode sheet 14 is electrically connected to the pre-stretched pattern layer 13.

[0075] Second, see Figure 3 The stretched covering film 15 is formed by coating the pre-stretched pattern layer 13 exposed outside the electrode sheet 14 to obtain the first sensing electrode 10 .

[0076] See also Figure 10-12 and Figure 5-Figure 6 The signal transmission line 20 (taking the second stretchable substrate layer 21 and the first stretchable circuit layer 22 as an example) can be manufactured by the following steps:

[0077] First, see Figure 10 , provide a substrate 11. In this embodiment, the substrate 11 is preferably a glass plate.

[0078] Second, see Figure 11 , a stretchable substrate is coated on the substrate 11 to obtain the second stretchable substrate layer 21 .

[0079] Again, see Figure 12 , silver paste is screen-printed on the second stretchable substrate layer 21 to form the first stretchable circuit layer 22 .

[0080] Afterwards, see Figure 5-6 The substrate 11 with the second stretchable substrate layer 21 and the first stretchable circuit layer 22 is placed in a drying device (not shown) for drying. After removal, the substrate 11 is removed to obtain the signal transmission line 20 including the second stretchable substrate layer 21 and the first stretchable circuit layer 22. In this embodiment, the drying temperature is 80°C and the drying time is 1 hour.

[0081] See also Figure 13-14 A second embodiment of the present application provides a stretchable sensing structure 200. The structure of the stretchable sensing structure 200 is substantially the same as that of the stretchable sensing structure 100, with the only difference being that the stretchable sensing array 120 of the stretchable sensing structure 200 includes at least one first sensing electrode 10, a plurality of signal transmission lines 20, and at least one second sensing electrode 30. The first sensing electrodes 10 and the second sensing electrodes 30 are arranged in an array, and two adjacent first sensing electrodes 10, two adjacent second sensing electrodes 30, or one adjacent first sensing electrode 10 and one adjacent second sensing electrode 30 are electrically connected via at least one signal transmission line 20. In this embodiment, a first sensing electrode 10 is electrically connected to the signal processing element 130. In other embodiments, a second sensing electrode 30 may also be electrically connected to the signal processing element 130.

[0082] The second sensing electrode 30 is used to sense signals such as pressure and temperature.

[0083] The second sensing electrode 30 includes a deformable substrate 31 , at least one zinc oxide layer 32 formed on the deformable substrate 31 , and at least one silver layer 33 formed on the zinc oxide layer 32 .

[0084] In this embodiment, four zinc oxide layers 32 and three silver layers 33 are formed on two opposite surfaces of the deformable substrate 31 of the second sensing electrode 30 .

[0085] In other embodiments, the quantities of the zinc oxide layer 32 and the silver layer 33 are not limited to the above quantities and may be determined according to reagent conditions.

[0086] The deformable substrate 31 can be deformed under the action of an external force and return to its original state after the external force is removed.

[0087] The deformable substrate 31 may be made of a non-stretchable substrate such as thermoplastic polyurethane (TPU), rubber, polyimide (PI), polyethylene terephthalate (PET), or polyethylene naphthalate (PEN).

[0088] See also Figure 15 The third embodiment of the present application provides a stretchable sensing structure 300. The structure of the stretchable sensing structure 300 is basically the same as that of the stretchable sensing structure 200, with the only difference being that the stretchable sensing array 140 of the stretchable sensing structure 300 further includes at least one control valve 40, which is arranged on the signal transmission line 20 and is used to control the magnitude of the current flowing through the signal transmission line 20, thereby controlling the resistance of the first sensing electrode 10 and / or the second sensing electrode 30.

[0089] Of course, the stretchable sensing array 140 of the stretchable sensing structure 300 may not include the second sensing electrode 30 .

[0090] Of course, in other embodiments, the stretchable sensing structure further includes more other sensing electrodes with different sensing functions, and is not limited to the first sensing electrode 10 and the second sensing electrode 30 .

[0091] The present application also provides a wearable smart fabric (not shown), which includes a fabric (not shown), and the wearable smart fabric also includes at least one of the stretchable sensing structures 100, 200, and 300 as described above, and at least one of the stretchable sensing structures 100, 200, and 300 is fixed on or within the fabric.

[0092] The present application provides a stretchable sensing structure and a manufacturing method thereof, 1) its sensing electrode includes a first stretchable substrate layer, a pre-stretched pattern layer formed on the first stretchable substrate layer, and an electrode sheet formed on the first stretchable substrate layer and electrically contacting the pre-stretched pattern layer, so that the sensing electrode can be stretched; 2) the stretchable sensing structure includes at least two types of sensing electrodes, so that the stretchable sensing structure is used to sense different physiological signals, thereby achieving diverse sensing functions; 3) two adjacent sensing electrodes are electrically connected through a signal transmission line, and the signal transmission line includes a second stretchable substrate layer and a first stretchable circuit layer formed on the second stretchable substrate layer, the material of the first stretchable circuit layer is silver paste, so that the signal transmission line can be stretched, and thus the stretchable sensing structure can be stretched, so that the stretchable sensing structure has variable resistance.

[0093] The above is only a preferred embodiment of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with this profession can use the technical content disclosed above to make some changes or modify it into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A stretchable sensing structure comprising: At least one stretchable sensing array, wherein each of the stretchable sensing arrays comprises: At least two first sensing electrodes arranged in an array; the first sensing electrodes are used to sense different physiological signals; each first sensing electrode includes a first stretchable substrate layer, a pre-stretched pattern layer embedded in the first stretchable substrate layer, an electrode sheet formed on the first stretchable substrate layer and covering the pre-stretched pattern layer, and a stretchable covering film covering the pre-stretched pattern layer exposed outside the electrode sheet, wherein the electrode sheet is made of carbon paste; a plurality of signal transmission lines, wherein two adjacent first sensing electrodes are electrically connected via at least one of the signal transmission lines; and At least one signal processing element; a first sensing electrode is electrically connected to the signal processing element through a signal transmission line; the signal processing element is used to receive and analyze the physiological signal.

2. The stretchable sensing structure according to claim 1, wherein: Each of the stretchable sensing arrays also includes at least one second sensing electrode; the first sensing electrodes and the second sensing electrodes are arranged in an array; the second sensing electrodes are used to sense different physiological signals; two adjacent second sensing electrodes or an adjacent first sensing electrode and a second sensing electrode are electrically connected via at least one signal transmission line.

3. The stretchable sensing structure according to claim 2, wherein: The second sensing electrode includes a deformable substrate, at least one zinc oxide layer formed on the deformable substrate, and at least one silver layer formed on the zinc oxide layer.

4. The stretchable sensing structure according to claim 1, wherein: The signal transmission line includes a second stretchable substrate layer and a first stretchable circuit layer formed on the second stretchable substrate layer. The material of the first stretchable circuit layer is silver paste.

5. The stretchable sensing structure according to claim 4, wherein: The first stretching circuit layer includes multiple first stretching circuits, each of which has a first connection contact formed at both ends, and the first connection contact is electrically connected to the electrode sheet; the signal transmission line also includes a first insulating layer formed on the first stretching circuit layer; the material of the first insulating layer is thermoplastic polyurethane or rubber.

6. The stretchable sensing structure according to claim 5, wherein: The signal transmission line also includes a second stretching circuit layer formed on the first insulating layer and a second insulating layer formed on the second stretching circuit layer; the second stretching circuit layer includes a plurality of second stretching circuits, each of the second stretching circuits has a second connecting contact formed at both ends, and the first connecting contact and the second connecting contact are bonded together up and down.

7. The stretchable sensing structure according to claim 1, wherein: The stretchable sensing structure further includes at least one control valve, which is disposed on the signal transmission line and is used to control the magnitude of the current flowing through the signal transmission line, thereby controlling the resistance of the sensing electrode.

8. A method for manufacturing the stretchable sensing structure according to any one of claims 1 to 7, comprising the steps of: Providing at least two first sensing electrodes; the first sensing electrodes are used to sense different physiological signals; providing a plurality of the signal transmission lines, and electrically connecting two adjacent first sensing electrodes through at least one of the signal transmission lines; and At least one signal processing element is provided, and the first sensing electrode and the signal processing element are electrically connected via the signal transmission line.

9. The method for manufacturing a stretchable sensing structure according to claim 8, wherein: The manufacturing method of the first sensing electrode includes: Providing a first stretchable substrate layer; forming a pre-stretched pattern layer at a predetermined position of the first stretchable substrate layer; Applying carbon paste on a predetermined position of the first stretchable substrate layer to form an electrode sheet, wherein one end of the electrode sheet is electrically connected to the pre-stretched pattern layer; and The stretched covering film is formed by coating the pre-stretched pattern layer exposed outside the electrode sheet to obtain the first sensing electrode.

10. The method for manufacturing a stretchable sensing structure according to claim 8, wherein: The manufacturing method of the signal transmission line includes: providing a substrate; coating a stretchable substrate on the substrate to obtain a second stretchable substrate layer; Screen-printing silver paste on the second stretchable substrate layer to form a first stretchable circuit layer; and The substrate with the second stretchable base material layer and the first stretchable circuit layer is dried, and the substrate is removed to obtain the signal transmission line including the second stretchable base material layer and the first stretchable circuit layer.

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