Pulse wave sensor device

Abstract

The present application relates to a kind of pulse wave sensor devices.The pulse wave sensor device includes sensor body and adhesive layer, the sensor body includes substrate assembly and inductive piece, the inductive piece includes the inductive part with arc surface, the inductive part is used to collect pulse wave signal, the substrate assembly has support part, the support part supports the inductive part with the arc surface;The adhesive layer is attached to the outer surface of the inductive part, and the adhesive layer is arc-shaped.Support part supports inductive piece and has the arc surface by adhesive layer and clothing layer contact, so that inductive piece passes through clothes surface tension, ensure that there is certain pressure between human body and sensor body, so as to collect pulse wave.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensors, in particular to a pulse wave sensor device. BACKGROUND

[0002] The pulse wave is one of the important parameters of the human cardiovascular system. When the heart contracts and relaxes periodically, the blood flow from the ventricle to the aorta will propagate in the form of a wave from the root of the aorta along the arterial system. This wave is the pulse wave. The pulse wave is transmitted in the arterial system and is reflected in the branches at different positions downstream, so that the pulse wave is not only affected by the heart itself, but also by various physiological and pathological factors such as blood vessel resistance, blood vessel wall elasticity, and blood viscosity in the branches of the arteries at all levels. Therefore, the intensity and waveform of the reflected wave from the downstream peripheral arteries will vary greatly with different physiological and pathological factors. Therefore, the physiological and pathological information of the human body extracted from the pulse wave has always been valued by the medical community as a basis for clinical diagnosis and treatment. The existing pulse wave sensor device is directly attached to the surface of the human skin, which has the problems of inconvenient cleaning and poor user experience. SUMMARY

[0003] Therefore, it is necessary to provide a pulse wave sensor device to solve the technical problems, which can collect pulse waves without contacting the skin.

[0004] A pulse wave sensor device, comprising:

[0005] A sensor body, comprising a substrate assembly and a sensing piece, the sensing piece comprising a sensing part with an arc surface, the sensing part being used for collecting a pulse wave signal, the substrate assembly having a support part supporting the sensing part with the arc surface; and

[0006] An adhesive layer attached to the outer surface of the sensing part, and the adhesive layer is arc-shaped.

[0007] In this way, the support part of the substrate assembly supports the arc surface of the sensing part, which is indirectly contacted with the human body through the adhesive layer, and is used for detecting the signal of the pulse wave. Specifically, the sensing piece is contacted with the clothing layer through the adhesive layer, so that the sensing piece is tightly attached to the skin layer through the surface tension of the clothes.

[0008] In one embodiment, in order to amplify the pulse wave signal to be detected, the substrate assembly comprises a first substrate and a second substrate, the first substrate and the second substrate are arranged side by side, the first substrate and the second substrate have different hardnesses, the first substrate has a first support part, the second substrate has a second support part, and the first support part and the second support part combine to form the support part.

[0009] In this way, since the first substrate and the second substrate have different hardness, when the first substrate and the second substrate are arranged side by side, the deformation of the inductor is larger, so that the pulse wave signal is amplified in physical structure, and the accuracy of the detection data is improved.

[0010] In one of the embodiments, the number of the first substrates is multiple, the number of the second substrates is multiple, and the first substrates and the second substrates are arranged in staggered parallel.

[0011] In this way, the first substrate and the second substrate are arranged in staggered parallel, so that the deformation at the interface of the two is increased, and the detection accuracy is further improved.

[0012] In one of the embodiments, the number of the first substrates is two, the number of the second substrates is one, and the second substrate is located between the two first substrates; the hardness of the first substrate is greater than that of the second substrate.

[0013] In this way, the second substrate is located between the two first substrates, so that the number of interfaces between the two first substrates and the one second substrate is increased, and the deformation is increased, and since the hardness of the first substrate is greater than that of the second substrate, the pulse wave signal is amplified, and the pulse wave signal is measured.

[0014] In one of the embodiments, in order to better measure the pulse wave, the inductor is a piezoelectric film.

[0015] In one of the embodiments, the sensor body further comprises a shell with an opening, and the inductor is outwardly protruding from the opening to form the arc surface.

[0016] In this way, the inductor can be connected with the adhesive layer through the opening of the shell, and the pulse wave of the human body is measured.

[0017] In one of the embodiments, in order to fix the inductor, the inductor comprises a base, the base is arranged in the shell for fixing the inductor, and the outer wall of the substrate assembly abuts against the inner wall of the base.

[0018] In this way, the two ends of the inductor are fixed by the base, and the inductor transmits the detected signal to the sensor body through the wire in the base, so that subsequent signal processing is performed.

[0019] Meanwhile, the application also provides a pulse wave sensor device, which comprises:

[0020] The sensor body comprises a shell, a substrate assembly and a sensing piece, the sensing piece comprises a sensing part with an arc surface, the sensing part is used for collecting a pulse wave signal, the substrate assembly has a supporting part supporting the sensing part with the arc surface, the shell has a convex part matched with the arc surface, the substrate assembly and the sensing piece are arranged in the shell, and the arc surface is attached to the inner wall surface of the convex part; and

[0021] An adhesive layer is attached to the outer wall surface of the convex part, and the adhesive layer is arc-shaped.

[0022] In this way, the shell of the sensor body has a convex part matched with the arc surface, and the arc surface is attached to the inner wall surface of the convex part. The outer wall surface of the convex part is connected with the adhesive layer for detecting the signal of the pulse wave, and the detection effect is good.

[0023] In one of the embodiments, in order to amplify the pulse wave signal to be detected, the substrate assembly comprises a first substrate and a second substrate, the first substrate and the second substrate are arranged side by side, the first substrate and the second substrate have different hardnesses, the first substrate has a first supporting part, the second substrate has a second supporting part, and the first supporting part and the second supporting part combine to form the supporting part.

[0024] In this way, since the first substrate and the second substrate have different hardnesses, when the first substrate and the second substrate are arranged side by side, the deformation of the sensing piece is larger, thereby amplifying the pulse wave signal from the physical structure and improving the accuracy of the detection data.

[0025] In one of the embodiments, the number of the first substrates is multiple, the number of the second substrates is multiple, and the first substrates and the second substrates are arranged in an interlaced manner.

[0026] In this way, the first substrates and the second substrates are arranged in an interlaced manner, so that the deformation at the interface between the two is increased, thereby further improving the detection accuracy.

[0027] In one of the embodiments, the number of the first substrates is two, the number of the second substrates is one, the second substrate is located between the two first substrates, and the hardness of the first substrate is greater than that of the second substrate.

[0028] In this way, the second substrate is located between the two first substrates, so that the number of interfaces between the two first substrates and the one second substrate is increased, and the deformation amount is increased. At the same time, since the hardness of the first substrate is greater than that of the second substrate, the pulse wave signal is amplified, and the pulse wave signal is measured.

[0029] In one of the embodiments, in order to better measure the pulse wave, the sensing piece is a piezoelectric film.

[0030] In one of the embodiments, in order to fix the sensing part, the sensing member comprises a base arranged in the shell for fixing the sensing part, and the outer wall of the substrate assembly abuts against the inner wall of the base.

[0031] In this way, the two ends of the sensing part are fixed by the base, and the sensing part transmits the detected signal to the sensor body through the wire in the base, so as to perform subsequent signal processing. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 Structure diagram of the pulse wave sensor device of the first embodiment of the present application;

[0033] Figure 2 Structure diagram of the pulse wave sensor device of the second embodiment of the present application;

[0034] Figure 3 Enlarged diagram of part A in the middle; Figure 2

[0035] Figure 4 First application scenario diagram of the pulse wave sensor device of the present application;

[0036] Figure 5 Second application scenario diagram of the pulse wave sensor device of the present application;

[0037] Figure 6 Pulse wave signal diagram measured by the pulse wave sensor device of the present application using a hard flat substrate;

[0038] Figure 7 Pulse wave signal diagram measured by the pulse wave sensor device using a curved substrate;

[0039] Figure 8 Pulse wave signal diagram measured by the pulse wave sensor device using a soft flat substrate;

[0040] Figure 9 Pulse wave signal diagram measured by the pulse wave sensor device using a soft curved substrate and a hard curved substrate arranged alternately. BRIEF DESCRIPTION OF DRAWINGS

[0042] 100, sensor body; 10, shell; 10a, opening; 10b, convex part; 20, sensing member; 21, sensing part; 22, base; 30, substrate assembly; 30a, support part; 31, first substrate; 32, second substrate; 40, adhesive layer; 50, clothing layer; 60, skin layer. DETAILED DESCRIPTION

[0043] ​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0044] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. When a component is referred to as being "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0046] Referring to Figures 1 to 5 The present application provides a pulse wave sensor device which can be attached to the outer surface of a clothing layer 50 without being in direct contact with the skin layer 60, so as to collect pulse waves, thereby avoiding the inconvenience of cleaning and poor user experience caused by being attached to the skin. Specifically, the substrate assembly 30 amplifies the pulse wave signal to be detected, the support part 30a supports the sensing part 20, and the arc surface of the support part 30a is in contact with the clothing layer 50 through the adhesive layer 40, so that the sensing part 20 ensures a certain pressure between the human body and the sensor body 100 through the surface tension of the clothes, thereby collecting pulse waves.

[0047] Referring to Figure 1In an embodiment of the present application, a pulse wave sensor device is provided, which comprises a sensor body 100 and an adhesive layer 40, the sensor body 100 comprising a substrate assembly 30 and a sensing element 20, the sensing element 20 comprising a sensing portion 21 with an arc surface, the sensing portion 21 being configured to collect a pulse wave signal, the substrate assembly 30 having a support portion 30a supporting the arc surface of the sensing portion 21; the adhesive layer 40 being attached to an outer surface of the sensing portion 21 and being arc-shaped and arranged corresponding to the arc surface; the arc surface of the sensing portion 21 supported by the support portion 30a of the substrate assembly 30 being indirectly contacted with a human body through the adhesive layer 40 for detecting the pulse wave signal, specifically, the sensing element 20 being contacted with a clothing layer 50 through the adhesive layer 40 so as to collect the pulse wave signal through the surface tension of the clothing.

[0048] In the embodiment, the arc surface of the sensing portion 21 supported by the support portion 30a of the substrate assembly 30 is attached to the clothing layer 50 through the adhesive layer 40, thereby indirectly realizing the contact with the human body.

[0049] It should be explained that the pulse wave sensor device of the embodiment is used in cooperation with a close-fitting clothing, which is a tight-fitting clothing with elasticity and close-fitting to the human body. Since the tight-fitting clothing itself has a certain tension, the arc surface structure of the sensing element 20 is directly contacted with the clothing layer 50, thereby ensuring that the clothing itself has a certain pressure with the sensor body 100. When the sensing element 20 is attached to the clothing layer 50 through the adhesive layer 40, the sensor body 100 can perceive the pulse wave of the human body through the tension of the clothing itself, thereby collecting the pulse wave signal of the human body and realizing all-weather heart rate health monitoring.

[0050] Further, the traditional substrate assembly 30 often adopts a flat structure. When the flat substrate structure is attached to the outer surface of the clothing layer 50, at this time, there is not enough force between the sensor body 100 and the human body, which easily leads to poor collection of the pulse wave signal, affects the detection result, and is difficult to be applied to different application scenarios.

[0051] Please refer to Figure 1, preferably, in order to amplify the pulse wave signal to be detected, the substrate assembly 30 comprises a first substrate 31 and a second substrate 32, the first substrate 31 and the second substrate 32 are arranged side by side, the first substrate 31 and the second substrate 32 have different hardness, the first substrate 31 has a first supporting part, the second substrate 32 has a second supporting part, the first supporting part and the second supporting part combine to form a supporting part 30a, and the supporting part 30a is an arc-shaped structure; since the supporting part 30a is an arc-shaped structure, and the first substrate 31 and the second substrate 32 have different hardness, when the first substrate 31 and the second substrate 32 are arranged side by side, the deformation of the sensing part 20 is further increased, thereby amplifying the pulse wave signal from the physical structure, and improving the accuracy of the detection data.

[0052] Optionally, the number of the first substrates 31 is multiple, the number of the second substrates 32 is multiple, and the first substrates 31 and the second substrates 32 are arranged staggered side by side; the multiple first substrates 31 and the multiple second substrates 32 are arranged staggered side by side, so that the deformation amount at the junction of the two is increased, thereby further improving the detection accuracy.

[0053] Of course, in other embodiments, the number of the first substrates 31 and the second substrates 32 can be one, and the first substrates 31 and the second substrates 32 are arranged side by side, as long as the hardness of the first substrate 31 and the second substrate 32 is different, the purpose of amplifying the pulse wave signal can be achieved.

[0054] In the embodiment, preferably, the number of the first substrates 31 is two, the number of the second substrates 32 is one, and the second substrate 32 is located between the two first substrates 31; the hardness of the first substrate 31 is greater than the hardness of the second substrate 32; the second substrate 32 is located between the two first substrates 31, so that the junction between the two first substrates 31 and the one second substrate 32 is increased, and the deformation amount is increased, and since the hardness of the first substrate 31 is greater than the hardness of the second substrate 32, the first substrate 31 is a hard substrate, and the second substrate 32 is a soft substrate, thereby further amplifying the pulse wave signal, facilitating the measurement of the pulse wave signal. It should be noted that in the embodiment, the hard substrate is a rubber part which is not easy to deform under pressure, and the soft substrate is a sponge which is easy to deform under pressure, and the staggered arrangement of the rubber part and the sponge makes the deformation amount larger.

[0055] It should be noted that the first and second in the present text are only used to distinguish the same features, and it can be understood that the first substrate 31 in the present text can also be referred to as the second substrate 32, and the second substrate 32 can also be referred to as the first substrate 31.

[0056] In order to better measure, in the embodiment, the inductor 20 is a piezoelectric film, the piezoelectric film material is very sensitive to pressure change, and the piezoelectric film is used for detecting the pulse wave signal by using the characteristic, specifically, the piezoelectric film is attached to the outer surface of the clothes through the adhesive layer 40, the elasticity of the close-fitting clothes is used for detecting the pulse wave, and then physiological indexes such as heart rate are calculated.

[0057] The sensor body 100 further includes a shell 10 with an opening 10a, and the inductor 21 is outwardly protruded from the opening 10a to form an arc surface; in this way, the inductor 21 can be directly connected with the adhesive layer 40 through the opening 10a of the shell 10, and then the measurement of the pulse wave of the human body is realized.

[0058] In some embodiments, the inductor 20 includes a base 22 arranged in the shell 10 for fixing the inductor 21, and the outer peripheral wall of the substrate assembly 30 abuts against the inner wall of the base 22; the two ends of the inductor 21 are fixed through the base 22, and the inductor 21 transmits the detected signal to the sensor body 100 through the lead wire in the base 22, so that subsequent signal processing is performed.

[0059] Please refer to Figure 2 and Figure 3 In another embodiment of the present application, a pulse wave sensor device is further provided, which includes a sensor body 100 and an adhesive layer 40, the sensor body 100 includes a shell 10, a substrate assembly 30 and an inductor 20, the inductor 20 includes an inductor 21 with an arc surface, the inductor 21 is used for collecting a pulse wave signal, the substrate assembly 30 has a support part 30a supporting the inductor 21 with the arc surface, the shell 10 has a convex part 10b matched with the arc surface, the substrate assembly 30 and the inductor 20 are arranged in the shell 10, and the arc surface is attached to the inner wall surface of the convex part 10b; the adhesive layer 40 is attached to the outer wall surface of the convex part 10b, and the adhesive layer 40 is arc-shaped and arranged correspondingly to the arc surface; it should be noted that the difference between the embodiment and the above-mentioned embodiments is that the shell 10 of the sensor body 100 has a convex part 10b matched with the arc surface, and the arc surface is attached to the inner wall surface of the convex part 10b, the outer wall surface of the convex part 10b is connected with the adhesive layer 40 for detecting the pulse wave signal; in addition, in the embodiment, the convex part 10b of the shell 10 is a soft and thin material part, which is convenient for better attachment with the piezoelectric film to realize the conduction of the pressure change, which includes but is not limited to thin silica gel, cloth and film materials.

[0060] The pulse wave sensor device further comprises a circuit assembly, which comprises a processing module, a calculation module and a communication module; the signal processing module is used for amplifying and filtering the signals collected by the sensing part 21, the calculation module is used for digital filtering and heart rate calculation, and the communication module is used for communication with external equipment to realize control and data transmission; in actual use, the sensor body 100 collects pulse wave signals and performs signal processing through the internal processing module and calculation module, which includes filtering, denoising and other functions, to obtain clean and clear pulse wave signals; physiological indicators such as heart rate, HRV and heart rate interval are calculated by using the processed pulse wave signals through peak detection, correction and other means, and are sent to external equipment for display through the communication module, so that real-time viewing and good monitoring effect can be realized.

[0061] The pulse wave sensor device further comprises a circuit assembly, which comprises a processing module, a calculation module and a communication module; the signal processing module is used for amplifying and filtering the signals collected by the sensing part 21, the calculation module is used for digital filtering and heart rate calculation, and the communication module is used for communication with external equipment to realize control and data transmission; in actual use, the sensor body 100 collects pulse wave signals and performs signal processing through the internal processing module and calculation module, which includes filtering, denoising and other functions, to obtain clean and clear pulse wave signals; physiological indicators such as heart rate, HRV and heart rate interval are calculated by using the processed pulse wave signals through peak detection, correction and other means, and are sent to external equipment for display through the communication module, so that real-time viewing and good monitoring effect can be realized.

[0062] The detection method of the pulse wave sensor device comprises the following steps:

[0063] S1: The pulse wave sensor device is attached to the outer surface of the clothing layer 50, and the user wears the clothing with the sensor device attached;

[0064] S2: The sensing part 20 is in contact with the outer surface of the clothing layer 50 through the adhesive layer 40, and relies on the tension of the clothing layer 50 to provide a certain force between the pulse wave sensor device and the human body, so as to ensure that the pulse wave sensor device can perceive the pulse wave of the human body;

[0065] S3: The signal processing module amplifies and filters the signals collected by the piezoelectric film, the calculation module performs digital filtering and heart rate calculation, and the communication module communicates with external equipment to realize control and data transmission; the signal processing module and the calculation module perform signal processing to obtain clean and clear pulse wave signals;

[0066] S4: By using the processed pulse wave signals, various physiological indicators are calculated through peak detection, correction and other means, and are sent to external equipment for display through the communication module.

[0067] In this embodiment, since the pulse wave sensor device is attached to the outer side of the clothing layer 50, it can adapt to different application scenarios, and specific details can be referred to in Figure 4 and Figure 5 .

[0068] Further, Figures 6 to 9The pulse wave signal data graph measured under the same condition for different substrate materials, in particular, Figure 6 The pulse wave signal data graph measured by using a rubber piece with a planar surface, Figure 7 The pulse wave signal data graph measured by using a sponge with an arc surface, Figure 8 The pulse wave signal data graph measured by using a soft planar substrate, Figure 9 In the embodiment, the soft substrate is a sponge, the hard substrate is a rubber piece, and the surfaces of both are arc-shaped. As shown in the graph, the planar substrate cannot measure the pulse wave signal. In contrast, the arc-shaped substrate structure can measure the pulse wave signal. The arc-shaped surfaces of the hard substrate and the soft substrate can further amplify the pulse wave signal, and the detection accuracy is improved.

[0069] The pulse wave sensor device of the embodiment has the following technical effects:

[0070] The pulse wave sensor device amplifies the pulse wave signal to be detected by the substrate assembly 30. The sensing element 20 is in contact with the clothing layer 50 through the adhesive layer 40, so that the sensing element 20 can collect the pulse wave signal through the surface tension of the clothing. The specific advantages are as follows:

[0071] (1) High detection accuracy. The first substrate 31 and the second substrate 32 have different hardnesses. When the first substrate 31 and the second substrate 32 are arranged side by side, the deformation of the sensing element 20 is greater, so that the pulse wave signal is amplified from the physical structure, and the detection data accuracy is improved.

[0072] (2) Good experience. In the embodiment, the arc surface of the support part 30a of the substrate assembly 30 supports the sensing part 21 and is attached to the clothing layer 50 through the adhesive layer 40, thereby indirectly realizing contact with the human body. Since the tight clothing itself has a certain tension, a certain pressure is ensured between the human body and the sensor body 100, so that the pulse wave can be collected, and all-weather and non-invasive heart rate health monitoring is realized.

[0073] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0074] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A pulse wave sensor device, characterized in that, include: A sensor body (100) includes a substrate assembly (30) and a sensing element (20), the sensing element (20) including a sensing portion (21) with an arcuate surface for acquiring pulse wave signals; the substrate assembly (30) has a support portion (30a) that supports the sensing portion (21) having the arcuate surface; and An adhesive layer (40) is attached to the outer surface of the sensing part (21), and the adhesive layer (40) is arc-shaped. The side of the adhesive layer (40) facing away from the sensing part (21) can be attached to the outer surface of the clothing layer (50). The substrate assembly (30) includes a first substrate (31) and a second substrate (32), the first substrate (31) and the second substrate (32) are arranged side by side, the first substrate (31) and the second substrate (32) have different hardness, the first substrate (31) has a first support portion, the second substrate (32) has a second support portion, and the first support portion and the second support portion are combined to form the support portion (30a); The sensor body (100) also includes a housing (10) with an opening (10a), and the sensing part (21) protrudes outward from the opening (10a) to form the arc surface; The sensing element (20) further includes a base (22), which is disposed inside the housing (10) for fixing the sensing part (21), and the outer peripheral wall of the substrate assembly (30) abuts against the inner wall of the base (22).

2. The pulse wave sensor device according to claim 1, characterized in that, There are multiple first substrates (31) and multiple second substrates (32), and the first substrates (31) and the second substrates (32) are arranged alternately side by side.

3. The pulse wave sensor device according to claim 1, characterized in that, There are two first substrates (31) and one second substrate (32), with the second substrate (32) located between the two first substrates (31); The first substrate (31) has a higher hardness than the second substrate (32).

4. The pulse wave sensor device according to claim 1, characterized in that, The sensing element (20) is a piezoelectric thin film.

5. A pulse wave sensor device, characterized in that, include: A sensor body (100) includes a housing (10), a substrate assembly (30), and a sensing element (20). The sensing element (20) includes a sensing portion (21) with an arc surface, which is used to collect pulse wave signals. The substrate assembly (30) has a support portion (30a) that supports the arc surface of the sensing portion (21). The housing (10) has a protrusion (10b) adapted to the arc surface. The substrate assembly (30) and the sensing element (20) are both disposed within the housing (10), and the arc surface is fitted to the inner wall surface of the protrusion (10b). An adhesive layer (40) is attached to the outer wall surface of the protrusion (10b), and the adhesive layer (40) is arc-shaped. The side of the adhesive layer (40) facing away from the protrusion (10b) can be attached to the outer surface of the clothing layer (50). The substrate assembly (30) includes a first substrate (31) and a second substrate (32), the first substrate (31) and the second substrate (32) are arranged side by side, the first substrate (31) and the second substrate (32) have different hardness, the first substrate (31) has a first support portion, the second substrate (32) has a second support portion, and the first support portion and the second support portion are combined to form the support portion (30a); The sensing element (20) includes a base (22), which is disposed inside the housing (10) for fixing the sensing part (21), and the outer peripheral wall of the substrate assembly (30) abuts against the inner wall of the base (22).

6. The pulse wave sensor device according to claim 5, characterized in that, There are multiple first substrates (31) and multiple second substrates (32), and the first substrates (31) and the second substrates (32) are arranged alternately side by side.

7. The pulse wave sensor device according to claim 5, characterized in that, There are two first substrates (31) and one second substrate (32), with the second substrate (32) located between the two first substrates (31); The first substrate (31) has a higher hardness than the second substrate (32).

8. The pulse wave sensor device according to claim 5, characterized in that, The sensing element (20) is a piezoelectric thin film.

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