Pressure detection piece and pressure detection device

Abstract

The utility model relates to the technical field of pressure detection, and provides a pressure detection piece and a pressure detection device.The pressure detection piece comprises a base body and a deformation body, and the deformation body is arranged on the base body; the deformation body comprises a plurality of protruding parts protruding and extending back to the base body, and the protruding parts are made of shape memory materials. And the convex part is used for receiving pressure applied by an object to be measured to deform. According to the pressure detection piece provided by the invention, the deformation of the pressure detection piece does not need to be converted into a chemical signal or an electric signal to be output, so that the pressure measurement is simpler and more direct, the stability and accuracy of pressure detection are improved, and the limitation of pressure detection is reduced.

Description

Technical Field

[0001] The present application relates to the field of pressure detection technology, and in particular to a pressure detection component and a pressure detection device. Background Art

[0002] Pressure sensors are components used to detect pressure and can be used in a variety of fields. For example, in electronics, industry, agriculture, medicine, and other fields, precise pressure and pressure distribution measurements are often required, which requires the use of pressure sensors.

[0003] Currently, pressure sensors commonly used to measure pressure and pressure distribution are typically pressure-sensitive paper, strain gauges, contact resistors, and other sensors. These sensors deform when subjected to pressure from an object, converting this deformation into a chemical or electrical signal for output. Pressure is then determined based on the chemical or electrical signal. Therefore, these sensors use an indirect conversion method to detect pressure, which is limited by the sensor's inherent characteristics. This can lead to limitations in the final pressure measurement results, such as a limited pressure detection range, suboptimal pressure detection accuracy, and suboptimal detection of in-plane pressure distribution. Utility Model Content

[0004] The embodiments of the present application provide a pressure detection element and a pressure detection device, which can improve the technical problem in the related art that the pressure detection element detects pressure in the form of indirect conversion, which easily causes limited pressure detection.

[0005] In a first aspect, an embodiment of the present application provides a pressure detection component, the pressure detection component comprising:

[0006] a substrate; and

[0007] A deformable body, the deformable body is arranged on the base; the deformable body includes a plurality of protrusions protruding away from the base, the material of the protrusions is a shape memory material; the protrusions are used to receive the pressure applied by the object to be measured and deform.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0009] The pressure detection part provided in the embodiment of the present application is a deformation body provided on a base body including multiple protrusions protruding back to the base body. When the pressure detection part contacts the object to be detected and measures the pressure applied by the object to be detected, the protrusions can be deformed by the force applied to the protrusions. Therefore, the pressure applied by the object to be detected can be determined directly based on the deformation of the protrusions. There is no need to convert the deformation of the pressure detection part into a chemical signal or an electrical signal output, which makes pressure measurement simpler and more direct, and is conducive to improving the stability and accuracy of pressure detection. In addition, the pressure applied by the object to be detected is determined by the deformation of multiple protrusions, which is conducive to detecting the distribution of the pressure applied by the object to be detected. Therefore, the pressure detection part provided in the embodiment of the present application can reduce the limitations of pressure detection.

[0010] In some embodiments, a dimension of an end of the protrusion close to the base is larger than a dimension of an end of the protrusion away from the base.

[0011] In some embodiments, the cross-sectional area of the protrusion gradually decreases from an end of the protrusion close to the base to an end of the protrusion away from the base.

[0012] In some embodiments, the protrusion is a pointed tooth-shaped protrusion or a cone-shaped protrusion.

[0013] In some embodiments, the protrusions are evenly distributed; and / or, the protrusions are distributed in an array.

[0014] In some embodiments, two adjacent protrusions are connected.

[0015] In some embodiments, the substrate is a thin film structure; the deformation body is disposed on a surface of at least one side of the thin film structure.

[0016] In some embodiments, the shape memory material comprises a shape memory polymer.

[0017] In some embodiments, the shape memory material includes at least one of polyvinyl chloride, polypropylene, polyethylene, polynorbornene, trans-polyisoprene, and styrene-butadiene copolymer.

[0018] In a second aspect, an embodiment of the present application provides a pressure detection device, the pressure detection device comprising:

[0019] The pressure detection member according to any of the above embodiments; and

[0020] An image acquisition device is used to acquire an image of the pressure detection component.

[0021] In some embodiments, the pressure detection device further includes a calculation device, which is used to determine the pressure applied by the object to be detected on the pressure detection member based on the image of the pressure detection member captured by the image capture device.

[0022] In some embodiments, the computing device is communicatively connected to the image acquisition device.

[0023] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or related technologies. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 A schematic structural diagram of a pressure detection member provided in some embodiments of the present application before deformation occurs;

[0026] Figure 2 A schematic diagram of a top view of a pressure detection component provided in some embodiments of the present application;

[0027] Figure 3 A schematic diagram of the structure of the pressure detection member provided in some embodiments of the present application after deformation;

[0028] Figure 4 A schematic diagram of the use status of the pressure detection component provided in some embodiments of the present application;

[0029] Figure 5 A schematic structural diagram of a pressure detection device provided in some embodiments of the present application;

[0030] Figure 6 Schematic diagram of pressure-deformation curves provided for some embodiments of the present application.

[0031] Among them, the reference numerals in the figures are:

[0032] 1000. Pressure detection device;

[0033] 100, pressure detection member; 10, base; 20, deformation body; 21, raised portion;

[0034] 200. Image acquisition device;

[0035] 300. computing device;

[0036] 2000, support;

[0037] 3000. Object under test. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0039] 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 belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, the terms "inside", "outside", "up", "down", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0041] The terms "first," "second," "third," "fourth," and "fifth," etc., are used solely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. For example, the terms "first through-hole" and "second through-hole" are used solely to distinguish between different through-holes and do not limit their order or quantity. The first through-hole could also be named "second through-hole," and the second through-hole could also be named "first through-hole" without departing from the scope of the various described embodiments. Furthermore, the terms "first" and "second," etc., do not necessarily define the features being referred to as different.

[0042] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connected", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. "Multiple" means at least two, that is, two or more; "multiple" means at least two, that is, two or more.

[0043] In this application, "and / or" is simply a way to describe the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0044] It should be noted that, in this application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or explanations. Any embodiment or design described in this application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present related concepts in a concrete way, meaning that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Pressure sensors are components used to detect pressure and can be used in a variety of fields. For example, in electronics, industry, agriculture, and medicine, precise pressure and pressure distribution measurements are often required.

[0047] Currently, pressure sensors commonly used to measure pressure and pressure distribution are typically pressure-sensitive paper, strain gauges, contact resistors, and other sensors. These sensors deform when subjected to pressure from an object, converting this deformation into a chemical or electrical signal for output. Pressure is then determined based on the chemical or electrical signal. Therefore, these sensors use an indirect conversion method to detect pressure, which is limited by the sensor's inherent characteristics. This can lead to limitations in the final pressure measurement results, such as a limited pressure detection range, suboptimal pressure detection accuracy, and suboptimal detection of in-plane pressure distribution.

[0048] Based on this, in order to improve the technical problem in the related art that the pressure detection component uses indirect conversion to detect pressure, which easily causes limited pressure detection, the inventors proposed the following solution.

[0049] See also Figures 1 to 3The present invention provides a pressure sensing element 100 for detecting pressure applied by an object to be tested, wherein the object to be tested can be any object, such as a metal object or a non-metallic object, such as a plastic object or a rubber object. The pressure sensing element 100 includes a base 10 and a deformable body 20, which is disposed on the base 10. The deformable body 20 includes a plurality of protrusions 21 extending away from the base 10. The protrusions 21 are made of a shape memory material; the protrusions 21 are configured to deform in response to pressure applied by the object to be tested.

[0050] It is understood that the base 10 is used to support and connect the deformable body 20 and can have various regular or irregular shapes, such as, but not limited to, a film structure, a sheet structure, a plate structure, a strip structure, a block structure, etc. The base 10 can be made of various materials, and can be the same as or different from the material of the deformable body 20.

[0051] The deformable member 20 is a structure capable of deforming under load. It may include only the protrusions 21 or other structures in addition to the protrusions 21, such as, but not limited to, a connecting structure connecting the protrusions 21. The deformable member 20 may be provided on the substrate 10 in various ways, such as by bonding the deformable member 20 to the substrate 10 or by coating the material of the deformable member 20 on the substrate 10 to form the deformable member 20.

[0052] The raised portion 21 may have various regular or irregular shapes, such as, but not limited to, a tooth-shaped raised structure, a conical raised structure, a pyramidal raised structure, a prism-shaped raised structure, a hemispherical raised structure, etc. Since the raised portion 21 projects away from the base 10, it includes a base connected to the base 10 and an end portion projecting away from the base 10. The end portion can be deformed relative to the base portion under load.

[0053] Shape memory materials are materials that exhibit a shape memory effect, which refers to the ability of a material to retain its deformed state after being deformed within certain limits under certain conditions. Because protrusion 21 is made of a shape memory material, it deforms when subjected to pressure from the object under test and retains its deformed state after the pressure is removed, facilitating the determination of the pressure applied by the object under test based on its deformation state.

[0054] As can be seen from the above, the pressure detection member 100 provided in the embodiment of the present application is provided with a deformation body 20 including a plurality of protrusions 21 protruding away from the base 10 on the base 10. When the pressure detection member 100 contacts the object to be measured and measures the pressure applied by the object to be measured, the protrusions 21 are deformed by the force applied, and the material of the protrusions 21 is a shape memory material, which can maintain the deformed state after deformation. Therefore, the pressure applied by the object to be measured can be directly determined according to the deformation of the protrusions 21 (for example, the pressure of the object to be measured can be determined by measuring the deformation amount of the protrusions 21). The pressure applied by the object to be tested can be determined by taking images of the protrusion 21 before and after deformation), and there is no need to convert the deformation of the pressure detection component 100 into a chemical signal or an electrical signal output. It is not easily limited by its own characteristics, making pressure measurement simpler and more direct, which is beneficial to improving the stability and accuracy of pressure detection. The pressure applied by the object to be tested can be determined by the deformation of multiple protrusions 21, which is beneficial to detecting the distribution of the pressure applied by the object to be tested. Therefore, the pressure detection component 100 provided in the embodiment of the present application can reduce the limitations of pressure detection.

[0055] For example, see Figure 1 and Figure 3 When the protrusion 21 receives the pressure applied by the object to be tested along the protruding direction of the protrusion 21, the end of the protrusion 21 moves toward the base, and the protrusion 21 undergoes compression deformation. The pressure applied by the object to be tested can be determined by the height difference between the protrusion 21 before and after deformation. For example, after obtaining the height difference between the protrusion 21 before and after deformation, the pressure can be determined based on the pressure deformation curve of the material of the protrusion 21. When the pressure detection part 100 detects the pressure applied by the object to be tested, if the pressure at different positions of the pressure detection part 100 is different, the protrusions 21 at different positions will produce different deformations. After determining the pressure applied to each protrusion 21, each protrusion 21 can be regarded as a pressure distribution point, and the pressure distribution can be determined, so that the pressure distribution in the plane can be distinguished in size.

[0056] In some embodiments, see Figure 1 Before the protrusion 21 is deformed, the size of the end of the protrusion 21 close to the base 10 is larger than the size of the end of the protrusion 21 away from the base 10. That is, the end of the protrusion 21 close to the base 10 is larger than the end of the protrusion 21 away from the base 10.

[0057] Such a configuration facilitates the end of the protrusion 21 away from the base 10 to receive the pressure applied by the object to be tested and is more likely to deform relative to the end of the protrusion 21 close to the base 10, and is particularly conducive to the protrusion 21 to undergo compression deformation when receiving the pressure applied by the object to be tested along the protruding direction of the protrusion 21.

[0058] For example, the dimension of the end of the protrusion 21 close to the base 10 may be the width dimension of the end of the protrusion 21 close to the base 10, and the dimension of the end of the protrusion 21 away from the base 10 may be the width dimension of the end of the protrusion 21 away from the base 10. The width dimension refers to the length of the protrusion 21 in the width direction, and the width direction of the protrusion 21 is perpendicular to the height direction of the protrusion 21. The height direction of the protrusion 21 refers to the protruding direction of the protrusion 21 protruding away from the base 10.

[0059] Exemplarily, the dimension of the end of the protrusion 21 close to the base 10 may be the area of the end surface of the protrusion 21 close to the base 10, and the dimension of the end of the protrusion 21 away from the base 10 may be the area of the end surface of the protrusion 21 away from the base 10.

[0060] In some embodiments, see Figure 1 Before the protrusion 21 is deformed, the cross-sectional area of the protrusion 21 gradually decreases from the end of the protrusion 21 close to the base 10 to the end away from the base 10. That is, the cross-sectional area of the protrusion 21 gradually decreases from the end of the protrusion 21 close to the base 10 to the end of the protrusion 21 away from the base 10.

[0061] It can be understood that the cross section of the protrusion 21 refers to a cross section perpendicular to the height direction or protruding direction of the protrusion 21 .

[0062] Such a configuration further facilitates the end of the protrusion 21 away from the base 10 to receive the pressure applied by the object to be tested and deform relative to the end of the protrusion 21 close to the base 10 .

[0063] Optional, see Figure 1 The protrusion 21 is a sharp tooth-shaped protrusion or a conical protrusion. The sharp tooth-shaped protrusion is roughly in the shape of a sharp tooth or a sawtooth. The conical protrusion is roughly in the shape of a cone, which can be a cone or a pyramid.

[0064] In some embodiments, see Figure 1 and Figure 2 The protrusions 21 are evenly distributed, that is, the positions of the protrusions 21 are evenly distributed. This is beneficial to improving the pressure detection uniformity when the pressure detection member 100 detects the pressure applied by the object to be tested, and is beneficial to increasing the pressure detection range and facilitating pressure distribution detection.

[0065] Of course, in some other embodiments, the protrusions 21 may also be distributed unevenly.

[0066] In some embodiments, see Figure 1 and Figure 2 The protrusions 21 are distributed in an array, for example, a linear array, a circular array or an annular array, which is beneficial to increasing the pressure detection range.

[0067] Of course, in some other embodiments, the protrusions 21 may not be distributed in an array.

[0068] In some embodiments, see Figure 1 and Figure 2 , two adjacent protrusions 21 are connected. In this way, the density of the protrusions 21 on the substrate 10 can be increased, which is beneficial to increasing the pressure detection range.

[0069] Of course, in some other embodiments, at least two protrusions 21 may not be connected.

[0070] In some embodiments, see Figure 1 and Figure 2 The base 10 is a thin film structure. The deformation body 20 is provided on at least one side of the surface of the thin film structure. Figure 1 The figure shows an example of a situation where the deformation body 20 is arranged on one side of the film structure.

[0071] With such a configuration, the substrate 10 having a thin film structure is more conducive to the pressure detection element 100 contacting the object to be detected to measure the applied pressure.

[0072] In some embodiments, the shape memory material includes a shape memory polymer. It is understood that a shape memory polymer may also be referred to as a shape memory macromolecule, which refers to a macromolecular material having a shape memory effect.

[0073] Optionally, the shape memory material includes at least one of polyvinyl chloride, polypropylene, polyethylene, polynorbornene, trans-polyisoprene, and styrene-butadiene copolymer. The material of the shape memory polymer may be selected based on actual needs. Of course, the specific material type of the shape memory polymer is not limited thereto.

[0074] It should be noted that the shape memory material is not limited to shape memory polymers. In some other embodiments, the shape memory material may also include shape memory alloys or shape memory ceramics.

[0075] See also Figure 5 An embodiment of the present application also provides a pressure detection device 1000 , which includes the pressure detection component 100 of any of the above embodiments and an image acquisition device 200 , wherein the image acquisition device 200 is used to acquire an image of the pressure detection component 100 .

[0076] It can be understood that the image acquisition device 200 can be any device capable of acquiring an image of the pressure detection component 100, such as a camera, a still camera, an optical scanner, etc., but is not limited thereto.

[0077] Because the pressure detection device 1000 provided in this embodiment of the present application utilizes the pressure detection member 100 of the aforementioned embodiment, it also possesses the technical advantages provided by the technical solutions of the pressure detection member 100 of any of the aforementioned embodiments, and will not be further elaborated upon here. Furthermore, the image acquisition device 200 can capture images of the pressure detection member 100, for example, images of the raised portion 21 of the pressure detection member 100 before and after deformation, to facilitate determining the pressure applied by the object under test based on the captured images of the pressure detection member 100.

[0078] For example, see Figure 4 and Figure 5 Before the pressure detection member 100 measures the pressure of the object to be detected, the image acquisition device 200 can first capture the initial image of the pressure detection member 100 to determine the state of the protrusion 21 before deformation. When it is necessary to detect the pressure of the object to be detected, the pressure detection member 100 can be brought into contact with the object to be detected (for example, the side of the pressure detection member 100 without the protrusion 21 is supported on the support 2000, and the object to be detected 3000 can apply a force F to the side of the pressure detection member 100 with the protrusion 21). The protrusion 21 deforms after receiving the pressure applied by the object to be detected. After the pressure is removed, the protrusion 21 remains in the deformed state. The image acquisition device 200 can capture the image of the pressure detection member 100 after deformation to determine the state of the protrusion 21 after deformation. This is beneficial for determining the pressure applied by the object to be detected based on the images of the protrusion 21 before and after deformation.

[0079] In some embodiments, see Figure 5 The pressure detection device 1000 further includes a calculation device 300 , which is used to determine the pressure applied by the object to be detected on the pressure detection member 100 based on the image of the pressure detection member 100 captured by the image capture device 200 .

[0080] It is understood that the computing device 300 is a device capable of performing data processing to facilitate determining the pressure applied by the object under test on the pressure testing member 100 based on the image of the pressure testing member 100 captured by the image acquisition device 200. For example, the computing device 300 may be a single-chip microcomputer, a microprocessor, a mobile phone, a tablet computer, a desktop computer, a smart screen, a smart TV, a handheld device with data processing capabilities, a computer, a laptop computer, etc., but is not limited thereto.

[0081] Optional, see Figure 5The computing device 300 is communicatively connected to the image acquisition device 200. A communicatively connected connection refers to the ability to transmit signals between the computing device 300 and the image acquisition device 200, and can be a wired or wireless communication connection. This facilitates the image acquisition device 200 to transmit the captured image of the pressure detection member 100 to the computing device 300, thereby facilitating the computing device 300 to determine the pressure applied by the object under test on the pressure detection member 100 based on the image of the pressure detection member 100 captured by the image acquisition device 200.

[0082] Optionally, the image acquisition device 200 and the computing device 300 may be integrated. For example, the image acquisition device 200 may be a camera module of a mobile phone or computer, and the computing device 300 may be a circuit board with data processing capabilities of the mobile phone or computer. The image acquisition device 200 and the computing device 300 are thus integrated on the mobile phone or computer.

[0083] Of course, in some other embodiments, the image acquisition device 200 and the computing device 300 may also be relatively independent devices. For example, the image acquisition device 200 may be a camera or an independent camera, and the computing device 300 may be a single chip microcomputer, a mobile phone, or a computer.

[0084] For example, see 1. Figure 3 、 Figure 5 and Figure 6 The computing device 300 can analyze the images of the pressure detection component 100 before deformation and after deformation acquired by the image acquisition device 200 (for example, the analysis can be performed through digital image correlation (DIC)), and obtain the deformation degree of the protrusion 21 at different positions of the pressure detection component 100, for example, △H1=H0-H1, △H2=H0-H2...△Hn=H0-Hn, where △Hn represents the deformation degree or deformation amount of the nth protrusion 21, Hn represents the height of the nth protrusion 21 after deformation, H0 represents the height of the protrusion 21 before deformation, n is a positive integer, and the heights of all protrusions 21 before deformation are the same. The computing device 300 then determines the magnitude of the pressure (pressure value) exerted on the protrusions 21 at different positions according to the degree of deformation of the protrusions 21 at different positions of the pressure detecting component 100. For example, the magnitude of the pressure (pressure value) exerted on the protrusions 21 at different positions can be determined based on the pressure deformation curve of the material of the protrusions 21.

[0085] Optionally, the computing device 300 can fit and superimpose the position coordinates of the protrusions 21 at different locations with the corresponding pressure values to obtain a pressure uniformity distribution diagram for the entire press-fit surface (the contact surface between the object to be tested and the pressure sensing member 100). Each protrusion 21 at each location on the pressure sensing member 100 can correspond to a distribution point. For example, the endpoint of the protrusion 21 away from the substrate 10 can serve as a distribution point or feature point, and the position coordinates of the distribution point can serve as the position coordinates of the corresponding protrusion 21.

[0086] It should be noted that the computing device 300 is not limited to calculating the pressure on the protrusion 21 in the above manner, but may also adopt various other methods for determining the pressure on the object based on the degree or amount of deformation of the object. This embodiment of the present application does not impose the sole limitation on this.

[0087] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A pressure detection component, characterized in that: The pressure detection component includes: a substrate; and A deformable body, the deformable body is arranged on the base; the deformable body includes a plurality of protrusions protruding away from the base, the material of the protrusions is a shape memory material; the protrusions are used to receive the pressure applied by the object to be measured and deform.

2. The pressure detection element according to claim 1, characterized in that: The dimension of one end of the protrusion close to the base is larger than the dimension of one end of the protrusion away from the base.

3. The pressure detection element according to claim 1, characterized in that: The cross-sectional area of the protrusion gradually decreases from an end of the protrusion close to the base to an end of the protrusion away from the base.

4. The pressure detection element according to claim 3, characterized in that: The protrusion is a pointed tooth-shaped protrusion or a conical protrusion.

5. The pressure detection component according to any one of claims 1 to 4, characterized in that: The protrusions are evenly distributed; and / or the protrusions are distributed in an array.

6. The pressure detection element according to any one of claims 1 to 4, characterized in that: Two adjacent protrusions are connected.

7. The pressure detection element according to any one of claims 1 to 4, characterized in that: The substrate is a thin film structure; the deformation body is arranged on the surface of at least one side of the thin film structure.

8. The pressure detection element according to any one of claims 1 to 4, characterized in that: The shape memory material comprises a shape memory polymer; The shape memory material includes one of polyvinyl chloride, polypropylene, polyethylene, polynorbornene, trans-polyisoprene, and styrene-butadiene copolymer.

9. A pressure detection device, characterized in that: The pressure detection device comprises: The pressure detection element according to any one of claims 1 to 8; and An image acquisition device is used to acquire an image of the pressure detection component.

10. The pressure detection device according to claim 9, characterized in that: The pressure detection device further includes a calculation device, the calculation device being configured to determine the pressure applied by the object to be detected on the pressure detection member based on the image of the pressure detection member acquired by the image acquisition device; The computing device is communicatively connected to the image acquisition device.

Images