阅读说明：本技术 拾振单元、骨声纹传感器和电子设备 (Vibration pickup unit, bone voiceprint sensor and electronic equipment ) 是由 孟晗 端木鲁玉 田峻瑜 方华斌 于 2021-08-27 设计创作，主要内容包括：本发明公开一种拾振单元、骨声纹传感器和电子设备。其中,拾振单元包括拾振壳体、弹性膜组件以及振动调节件,所述弹性膜组件设于所述拾振壳体内,并将所述拾振壳体内的空间分隔形成为第一腔体和第二腔体,所述弹性膜组件开设有连通所述第一腔体和所述第二腔体的透气孔；所述振动调节件设于所述弹性膜组件的一侧,并位于所述第一腔体内；其中,所述弹性膜组件设有所述振动调节件的一侧形成有避让区域,所述避让区域显露出所述振动调节件,所述透气孔开设于所述避让区域,且孔口面积小于所述避让区域的面积。本发明技术方案的拾振单元能够避免因打孔损伤产品,提高产品的一致性和良品率。(The invention discloses a vibration pickup unit, a bone voiceprint sensor and electronic equipment. The vibration pickup unit comprises a vibration pickup shell, an elastic membrane assembly and a vibration adjusting piece, wherein the elastic membrane assembly is arranged in the vibration pickup shell and divides the space in the vibration pickup shell into a first cavity and a second cavity, and the elastic membrane assembly is provided with an air hole communicated with the first cavity and the second cavity; the vibration adjusting piece is arranged on one side of the elastic membrane component and is positioned in the first cavity; an avoidance area is formed on one side, provided with the vibration adjusting piece, of the elastic membrane assembly, the avoidance area is exposed out of the vibration adjusting piece, the air holes are formed in the avoidance area, and the area of the hole opening is smaller than that of the avoidance area. According to the technical scheme, the vibration pickup unit can avoid damage to products due to punching, and the consistency and yield of the products are improved.)

1. A vibration pickup unit, comprising:

a vibration pick-up housing;

the elastic membrane assembly is arranged in the vibration pick-up shell and divides the space in the vibration pick-up shell into a first cavity and a second cavity, and the elastic membrane assembly is provided with an air hole communicated with the first cavity and the second cavity; and

the vibration adjusting piece is arranged on the elastic membrane component;

an avoidance area is formed on one side, provided with the vibration adjusting piece, of the elastic membrane assembly, the avoidance area is exposed out of the vibration adjusting piece, the air holes are formed in the avoidance area, and the area of the hole opening is smaller than that of the avoidance area.

2. A vibration pickup unit according to claim 1 wherein said vibration adjusting member is provided with a hollowed-out hole extending through said vibration adjusting member, and said elastic membrane module is formed as said escape area corresponding to a position of said hollowed-out hole.

3. A vibration pickup unit as set forth in claim 2 wherein the center of said hollowed out hole coincides with the center of gravity of said vibration adjusting member and is located on the centerline of said elastic membrane module.

4. A vibration pickup unit according to claim 1, wherein an edge of said vibration adjusting member is depressed toward the center to form a notch, and said elastic membrane module is formed as said escape region at a position corresponding to said notch.

5. A vibration pickup unit according to claim 1 wherein a peripheral edge of said elastic membrane module extends beyond a peripheral edge of said vibration adjusting member, and an area of said elastic membrane module corresponding to the area beyond the peripheral edge of said vibration adjusting member is formed as said escape area.

6. A vibration pickup unit according to any one of claims 1 to 5, wherein said elastic membrane module comprises an elastic membrane and a buffer fixing layer which are arranged in a stacked manner, said vibration adjusting member is attached to a side of said buffer fixing layer facing away from said elastic membrane, said buffer fixing layer is formed with said escape region, and said ventilation holes penetrate said buffer fixing layer and said elastic membrane;

and/or the vibration pickup shell is also provided with an air leakage hole, and the air leakage hole is communicated with the first cavity and the external environment;

and/or the vibration adjusting part is connected to one side of the elastic membrane component and is positioned in the first cavity.

7. A bone voiceprint sensor comprising a sensor unit and a vibration pickup unit according to any of claims 1 to 6, the sensor unit being connected to the vibration pickup unit.

8. The bone voiceprint sensor of claim 7 wherein said sensor unit comprises:

the packaging shell is internally provided with a containing cavity, the packaging shell is connected with the vibration pickup shell, and the packaging shell is provided with a sound hole for communicating the containing cavity with the second cavity;

the MEMS microphone chip is arranged in the accommodating cavity and corresponds to the sound hole; and

and the ASIC chip is arranged in the accommodating cavity and is in signal connection with the MEMS microphone chip.

9. The bone voiceprint sensor of claim 8 wherein said vibration pickup housing includes a support ring and a shroud coupled to said support ring, said elastomeric diaphragm assembly being disposed between said support ring and said shroud, said support ring being coupled to said packaging housing with a gap formed therebetween.

10. An electronic device characterized by comprising a bone voiceprint sensor according to any one of claims 7 to 9.

Technical Field

The invention relates to the technical field of vibration sensing, in particular to a vibration pickup unit, a bone voiceprint sensor and electronic equipment.

Background

The bone voiceprint sensor collects sound signals and converts the sound signals into electric signals by utilizing slight vibration of bones of the head and the neck caused by speaking of a person. Because the microphone collects sound through air conduction, the microphone can transmit sound clearly in a very noisy environment. In many situations, such as fire scenes, firefighters with gas guards cannot speak directly into the microphone using their mouths, so a bone voiceprint sensor can be used at this time. With the development of electronic products, the application of the bone voiceprint sensor is more and more extensive.

The bone voiceprint sensor generally comprises a vibration pickup unit and a sensor unit, wherein the vibration pickup unit is used for picking up external bone vibration signals and transmitting the bone vibration signals to the sensor unit, and the sensor unit is used for converting the vibration signals into electric signals. In the related art, in order to keep the air pressure in the internal cavity of the bone voiceprint sensor balanced, generally, an air hole penetrating through the vibration adjusting piece and the elastic membrane needs to be arranged in the vibration pickup unit, but in this way, when the vibration adjusting piece and the elastic membrane are punched, the molten liquid generated by the vibration adjusting piece at high temperature easily damages the aperture on the elastic membrane, even damages the elastic membrane, and the consistency and the yield of products are poor.

Disclosure of Invention

The invention mainly aims to provide a vibration pickup unit, aiming at avoiding damaging products due to punching and improving the consistency and yield of the products.

In order to achieve the above object, the vibration pickup unit provided by the present invention is applied to a bone voiceprint sensor, and comprises:

a vibration pick-up housing;

the elastic membrane assembly is arranged in the vibration pick-up shell and divides the space in the vibration pick-up shell into a first cavity and a second cavity, and the elastic membrane assembly is provided with an air hole communicated with the first cavity and the second cavity; and

the vibration adjusting piece is arranged on the elastic membrane component;

an avoidance area is formed on one side, provided with the vibration adjusting piece, of the elastic membrane assembly, the avoidance area is exposed out of the vibration adjusting piece, the air holes are formed in the avoidance area, and the area of the hole opening is smaller than that of the avoidance area.

Optionally, the vibration adjusting part is provided with a hollow hole, the hollow hole penetrates through the vibration adjusting part, and the position of the elastic membrane module corresponding to the hollow hole is formed into the avoidance area.

Optionally, the center of the hollow hole coincides with the center of gravity of the vibration adjusting member, and is located on the central line of the elastic membrane assembly.

Optionally, the edge of the vibration adjusting member is recessed towards the center to form a notch, and the elastic membrane assembly is formed as the avoiding region corresponding to the position of the notch.

Optionally, the peripheral edge of the elastic membrane module extends out of the peripheral edge of the vibration adjusting member, and the area of the elastic membrane module corresponding to the area outside the peripheral edge of the vibration adjusting member is formed as the escape area.

Optionally, the elastic membrane assembly includes an elastic membrane and a buffer fixing layer, the vibration adjusting member is connected to a side of the buffer fixing layer opposite to the elastic membrane, the buffer fixing layer is formed with the avoiding region, and the vent hole penetrates through the buffer fixing layer and the elastic membrane;

optionally, the vibration pickup shell is further provided with an air release hole, and the air release hole is communicated with the first cavity and the external environment.

Optionally, the vibration adjusting member is connected to one side of the elastic membrane module and is located in the first chamber.

The invention also provides a bone voiceprint sensor which comprises a sensor unit and the vibration pickup unit, wherein the sensor unit is connected with the vibration pickup unit.

Optionally, the sensor unit comprises:

the packaging shell is internally provided with a containing cavity, the packaging shell is connected with the vibration pickup shell, and the packaging shell is provided with a sound hole for communicating the containing cavity with the second cavity;

the MEMS microphone chip is arranged in the accommodating cavity and corresponds to the sound hole; and

and the ASIC chip is arranged in the accommodating cavity and is in signal connection with the MEMS microphone chip.

Optionally, the vibration pickup housing includes a support ring and a housing covering the support ring, the elastic membrane assembly is disposed between the support ring and the housing, the support ring is connected to the package housing, and a gap is formed between the elastic membrane assembly and the package housing.

The invention also provides electronic equipment comprising the bone voiceprint sensor.

According to the vibration pickup unit in the technical scheme, the avoidance area is arranged on one side, provided with the vibration adjusting piece, of the elastic membrane component, the vibration adjusting piece is exposed from the avoidance area, and meanwhile, the air holes are located in the avoidance area. Therefore, when the air holes are punched, the holes can be punched in the avoiding area directly, so that the punching operation on the vibration adjusting part can be avoided, the situation that the hole diameter is damaged and the elastic membrane component is damaged by molten liquid generated by the vibration adjusting part due to high temperature is avoided, and the consistency and the yield of products are effectively improved. In addition, because the orifice area of the air hole is smaller than the area of the avoiding region, when the air hole is punched, the air hole can be prevented from contacting a vibration adjusting piece, and the risk of damaging a product due to punching is further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of an embodiment of a bone voiceprint sensor in accordance with the invention;

FIG. 2 is a schematic top view of the vibration adjusting member and elastomeric membrane module of FIG. 1, as installed;

FIG. 3 is a schematic cross-sectional view of another embodiment of a bone voiceprint sensor in accordance with the invention;

FIG. 4 is a schematic top view of the vibration adjusting member and elastomeric membrane assembly of FIG. 3, as installed;

FIG. 5 is a schematic cross-sectional view of yet another embodiment of a bone voiceprint sensor in accordance with the invention;

FIG. 6 is a schematic top view of the vibration adjusting member and elastomeric membrane assembly of FIG. 5 after assembly.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a bone voiceprint sensor 1000, which includes a sensor unit 300 and a vibration pickup unit 100, wherein the sensor unit 300 is connected to the vibration pickup unit 100.

In the embodiment of the present invention, the vibration pickup unit 100 includes a vibration pickup housing 10, an elastic membrane assembly 20 and a vibration adjusting member 30, wherein the elastic membrane assembly 20 is disposed in the vibration pickup housing 10 and divides the space in the vibration pickup housing 10 into a first cavity 10a and a second cavity 10b, and the elastic membrane assembly 20 is provided with an air vent 20a communicating the first cavity 10a and the second cavity 10 b; the vibration adjusting member 30 is disposed on the elastic membrane module 20; an avoiding region 201 is formed at one side of the elastic membrane assembly 20, where the vibration adjusting member 30 is disposed, the avoiding region 201 exposes the vibration adjusting member 30, the vent holes 20a are opened in the avoiding region 201, and the area of the hole opening is smaller than that of the avoiding region 201.

The vibration-picking shell 10 can be made of metal material, and the vibration-picking shell 10 can protect the elastic membrane assembly 20. The vibration pickup housing 10 picks up a vibration signal of a bone when a wearer speaks and transmits the vibration signal to the elastic membrane module 20, and the elastic membrane module 20 receives the vibration signal and vibrates to form the sensor unit 300 which responds to the vibration signal and transmits the vibration signal to the bone voiceprint sensor 1000.

The vibration adjusting member 30 is a mass block, and is mainly used for adjusting the vibration of the elastic membrane module 20, so that the vibration of the elastic membrane module 20 is better matched with the bone vibration signal of the wearer, and the sensitivity of the bone voiceprint sensor 1000 can be improved. And the vibration adjusting member 30 vibrates along with the elastic membrane module 20, so that the mass of the elastic membrane module 20 can be increased, and thus, external sound wave interference can be effectively avoided. In this embodiment, the material of the vibration adjusting member 30 may be metal or nonmetal, and the specific mass of the vibration adjusting member 30 may be adaptively set according to the requirement of actual performance, which is not specifically limited in this application.

The vibration adjuster 30 is provided in the elastic membrane module 20, and may be integrally formed with the elastic membrane module 20 or may be fixedly connected to the elastic membrane module 20 in a separate structure. Therefore, the vibration control member 30 may be correspondingly located in the first cavity 10a and may also be correspondingly located in the second cavity, that is, the vibration control member 30 may be correspondingly disposed above or below the elastic membrane module. Alternatively, in the embodiment of the present application, the vibration adjusting member 30 is attached to one side of the elastic membrane module 20 and is located in the first chamber 10 a. Thus, the vibration control member 30 is less likely to interfere with the sensor unit 300 during vibration after being mounted to the sensor unit 300.

In the actual manufacturing process, due to the influence of the welding process, the air pressures of the first cavity 10a and the second cavity 10b are unbalanced after being heated, and therefore, the air pressures of the first cavity 10a and the second cavity 10b can be kept balanced by the air holes 20 a. Specifically, the shape of the vent 20a may be designed to have various shapes, such as a circular hole, a square hole or other irregular holes, and the size of the vent 20a may be adaptively designed according to actual situations. In the present application, the escape region 201 formed in the elastic diaphragm assembly 20 is understood to be the escape region 201 when the vibration control member 30 is disposed on the elastic diaphragm assembly 20, as viewed from above the vibration control member 30 in a downward plan view.

In the vibration pickup unit 100 according to the present invention, the avoidance region 201 is disposed on the side of the elastic membrane module 20 where the vibration adjusting member 30 is disposed, and the avoidance region 201 is exposed from the vibration adjusting member 30, and the position of the air hole 20a is located in the avoidance region 201. Therefore, when the air holes 20a are punched, punching in the avoiding area 201 can be directly selected, so that punching operation on the vibration adjusting part 30 can be avoided, and therefore the phenomenon that the hole diameter is damaged and the elastic membrane component 20 is damaged by molten liquid generated by the vibration adjusting part 30 due to high temperature is avoided, and the consistency and the yield of products are effectively improved. In addition, because the aperture area of the air hole 20a is smaller than the area of the avoiding region 201, when the air hole 20a is punched, the vibration adjusting piece 30 can be prevented from being contacted, and the risk of damaging the product due to punching is further reduced.

Specifically, the avoidance area 201 of the present application may have the following expressions:

referring to fig. 1 and 2, in one form, the vibration-adjusting member 30 is provided with a hollowed-out hole penetrating through the vibration-adjusting member 30, and the elastic membrane module 20 is formed as the escape area 201 at a position corresponding to the hollowed-out hole.

The hollow hole is a reserved hole arranged on the vibration adjusting piece 30, the position of the hollow hole can be at the middle position of the vibration adjusting piece 30, and the shape of the hollow hole can be various, such as a circle, an ellipse, a square or other special-shaped shapes. It can be understood that the size of the hollow hole determines the area size of the avoiding region 201, and when the vibration adjusting member 30 is fixed to the elastic membrane assembly 20, the region of the elastic membrane assembly 20 correspondingly exposed at the hollow hole is the avoiding region 201. Therefore, the elastic membrane assembly 20 can be directly perforated through the reserved hollow holes, so that the phenomenon that the elastic membrane assembly 20 is damaged by molten liquid generated at high temperature when the vibration adjusting piece 30 is perforated is avoided, the consistency and the yield of products are ensured, and the phenomenon that the molten liquid generates burrs at the edge of the air hole 20a and heightens the vibration adjusting piece 30 is also avoided.

Further, in an embodiment, the center of the hollow hole coincides with the center of gravity of the vibration adjusting member 30 and is located on the center line of the elastic membrane assembly 20. With such an arrangement, when the vibration adjusting member 30 is provided with the hollow hole, the center of gravity of the vibration adjusting member 30 can be kept at the center of the hollow hole, and when the vibration adjusting member is fixed on the elastic membrane assembly 20, the center of gravity of the vibration adjusting member 30 can be kept on the center line of the elastic membrane assembly 20, so that the mass of the vibration adjusting member 30 can be uniformly distributed around the center of the elastic membrane assembly 20, and thus the vibration amplitude of the elastic membrane assembly 20 is uniform, thereby improving the frequency response performance of the vibration pickup unit 100 as a whole and reducing distortion.

Further, in an embodiment of the present application, the air holes 20a are disposed at the central position of the avoiding region 201, so that the distances between the air holes 20a and the peripheral edge of the avoiding region 201 are equal, that is, the distances between the air holes 20a and the wall of the hollow hole are equal, so that when the elastic membrane assembly 20 is punched, it is ensured that the wall of the hollow hole is heated more uniformly, and thus, the wall of the hollow hole is prevented from generating a melt due to local high temperature.

Referring to fig. 3 and 4, in another expression of the avoidance region 201 of the present application, an edge of the vibration control member 30 is recessed toward the center to form a notch, and the elastic membrane module 20 is formed as the avoidance region 201 at a position corresponding to the notch.

In this mode, the shape of the notch may be crescent, semi-circle, or semi-ellipse, and the corresponding avoidance region 201 forms crescent, semi-circle, or semi-ellipse. In order to balance the mass of the vibration control member 30 at the center, a plurality of notches may be symmetrically disposed, for example, two notches are symmetrically disposed on the left and right of the vibration control member 30, and the ventilation holes 20a may be disposed in the escape area 201 corresponding to one of the notches. Therefore, the notch directly formed in the edge of the vibration adjusting piece 30 can ensure that the avoiding area 201 is formed, and meanwhile, the vibration adjusting piece 30 is convenient to process and manufacture.

Referring to fig. 5 and 6, in a further expression of the present application for the escape area 201, the peripheral edge of the elastic membrane module 20 extends beyond the peripheral edge of the vibration adjusting member 30, and the area of the elastic membrane module 20 corresponding to the area beyond the peripheral edge of the vibration adjusting member 30 is formed as the escape area 201.

In this manner, the air holes 20a are directly formed in the peripheral region of the vibration control member 30, so that the vibration control member 30 can be prevented from being formed with the holes, and the product can be prevented from being damaged by the melt generated from the vibration control member 30. Meanwhile, the vibration adjusting piece 30 does not need to be additionally processed, the manufacturing difficulty of the vibration adjusting piece 30 is further reduced, and the manufacturing efficiency is improved.

Continuing to refer to fig. 1, in the vibration pickup unit 100 of the present application, the elastic membrane assembly 20 includes an elastic membrane 21 and a buffer fixing layer 22 which are stacked, the vibration adjusting member 30 is connected to one side of the buffer fixing layer 22 back to the elastic membrane 21, the buffer fixing layer 22 is formed with the avoiding region 201, and the air holes 20a penetrate through the buffer fixing layer 22 and the elastic membrane 21.

Wherein the elastic membrane 21 is adapted to pick up bone vibrations of the wearer's speaker to vibrate to form a response vibration signal. The elastic membrane 21 may be a membrane having elastic deformation capability, which may be, but not limited to, a plastic membrane, a paper membrane, a metal membrane, a biological membrane, etc., for example, the elastic membrane 21 may be a PI (polyimide film) membrane or other polymer membrane. Further, the elastic film 21 may have a single-layer structure or may have a multi-layer composite film. The elastic film 21 may be made of a single material or may be made of a composite of different materials. The elastic mold may be fixed to the inner circumferential wall of the vibration pickup housing 10 by bonding. The buffer fixing layer 22 may be adhesively fixed to one surface of the elastic membrane 21 to fix the vibration adjusting member 30, and the edge of the buffer fixing layer 22 may be inside the edge of the elastic membrane 21 but at least outside the edge of the vibration adjusting member 30. Since the elastic film 21 is generally of a thin film structure, when the elastic film 21 is provided with the ventilation holes 20a directly, the openings of the elastic film 21 are easily spread and expanded around after being heated at the positions of the openings, so that the sizes of the openings are virtually enlarged, and irregular shapes are formed. On one hand, the buffering fixing layer 22 is arranged, so that the elastic film 21 can be buffered and weakened by directly punching the buffering fixing layer 22 during punching, the consistency and integrity of the air holes 20a during punching are effectively ensured, and the yield of products is ensured; on the other hand, the buffer fixing layer 22 can fix the vibration control member 30 to the elastic membrane 21, thereby ensuring stable mounting of the vibration control member 30.

Optionally, in this embodiment, the buffer fixing layer 22 is a flexible adhesive sheet, for example, a silicone material is used to form the adhesive sheet, so as to bond and fix the vibration adjusting member 30 and the elastic membrane 21.

In order to pick up the manufacturing process of shaking unit 100, also enable when adopting welding process to pick up the atmospheric pressure of shaking in the casing 10 and the atmospheric pressure of external environment and keep balance, in this application embodiment, pick up and shake casing 10 and still seted up out gas hole 121, gas hole 121 communicates first cavity 10a and external environment.

Wherein, the air release hole 121 can be an annular hole, a round hole, etc. arranged at the top of the vibration pickup housing 10, and when the vibration pickup unit 100 and the sensor unit 300 of the bone voiceprint sensor 1000 are assembled, the air release hole 121 can avoid the internal thermal expansion of the bone voiceprint sensor 1000 due to the welding process, and maintain the balance of the internal and external air pressures. However, during the use of the bone voiceprint sensor 1000, the air release hole 121 should be closed so as not to affect the performance of the bone voiceprint sensor 1000. For example, the air release hole 121 may be sealed by a sealant, an adhesive tape, or a sealing plug.

Referring to fig. 1, in the embodiment of the present application, the sensor unit 300 includes a package housing 310, a MEMS microphone chip 320, and an ASIC chip 330, wherein a receiving cavity 310a is formed in the package housing 310, the package housing 310 is connected to the vibration pickup housing 10, and the package housing 310 is opened with a sound hole 3111 for communicating the receiving cavity 310a with the second cavity 10 b; the MEMS microphone chip 320 is installed in the accommodating cavity 310a and is disposed corresponding to the sound hole 3111; the ASIC chip 330 is mounted in the accommodating chamber 310a and is in signal connection with the MEMS microphone chip 320.

Specifically, the package housing 310 includes a substrate 311 and a package cover 312, and the vibration pickup housing 10 is connected to the substrate 311 to enclose the second cavity 10 b. The substrate 311 and the package cover 312 may be an integral structure or a separate structure, but they are fixedly connected together. The substrate 311 may be a PCB circuit board, which can process signals of the MEMS microphone chip 320 and the ASIC chip 330, and the package cover 312 may be made of a metal material or formed by enclosing a PCB board. In this embodiment, an electrical connection member 3121 is further disposed on a side of the package cover 312 facing away from the substrate 311, and the electrical connection member 3121 is used for communicating with an external circuit.

The MEMS microphone chip 320 is generally made of a material such as single crystal silicon, polysilicon, or silicon nitride, and is used for sensing and detecting a sound source, and converting a vibration signal into an electrical signal for transmission, and the ASIC chip 330 is used for processing a signal output by the MEMS microphone chip 320 and providing a voltage to the MEMS microphone chip 320. The sound hole 3111 is formed in the substrate 311, the sound hole 3111 may be a circular hole or a square hole, the size of the sound hole 3111 may be adaptively designed according to actual conditions, the MEMS microphone chip 320 and the ASIC chip 330 are connected to the substrate 311 and disposed in an inverted manner, and the MEMS microphone chip 320 and the sound hole 3111 are disposed opposite to each other, so that the vibration signal transmitted from the sound hole 3111 may be rapidly and sensitively acquired by the MEMS microphone chip 320.

Further, in an embodiment of the present application, the vibration pickup housing 10 includes a support ring 11 and a cover 12 coupled to the support ring 11, the elastic diaphragm assembly 20 is disposed between the support ring 11 and the cover 12, the support ring 11 is coupled to the package housing 310, and a gap is formed between the elastic diaphragm assembly 20 and the package housing 310. The air release hole 121 may be opened at the top of the cover 12, and in actual manufacturing, the elastic membrane 21 may be adhesively fixed on the support ring 11, and the cover 12 may be fixed on the support ring 11 to cover the elastic membrane 21 and the support ring 11, that is, the support ring 11 is located at the peripheral position of the elastic membrane 21. The support ring 11 may form a sealed air chamber in a gap between the elastic membrane 21 and the substrate 311 of the package housing 310, so that the response performance is better when a vibration signal is transmitted through the sound hole 3111.

The present invention further provides an electronic device, which includes the bone voiceprint sensor 1000, and the specific structure of the bone voiceprint sensor 1000 refers to the above embodiments, and since the electronic device adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated herein. The electronic device may be a headset, an earphone, a smart watch, a smart band, a vehicle-mounted noise reduction device, or other electronic devices known to those skilled in the art, and the application is not limited thereto.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.