CN211930871U

CN211930871U - Bone voiceprint sensor and electronic device

Info

Publication number: CN211930871U
Application number: CN202020940632.7U
Authority: CN
Inventors: 方华斌; 付博; 端木鲁玉
Original assignee: Weifang Goertek Microelectronics Co Ltd
Current assignee: Weifang Goertek Microelectronics Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-11-13
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a bone voiceprint sensor and electronic equipment. The bone voiceprint sensor includes: the bone vibration picking device comprises a vibration picking unit, a vibration picking unit and a vibration adjusting unit, wherein the vibration picking unit is used for picking an external bone vibration signal to generate a response vibration signal and comprises a vibration picking shell, an elastic membrane arranged in the vibration picking shell and a vibration adjusting piece arranged on the elastic membrane, the vibration adjusting piece comprises an adjusting main body connected with the elastic membrane and a lateral protruding part arranged on the side surface of the adjusting main body, and a spacing interval is formed between the lateral protruding part and the elastic membrane; and a sensor unit for converting the response vibration signal into an electrical signal. Thus, the mass of the vibration adjusting piece can be increased under the condition that the connecting area of the vibration adjusting piece and the elastic membrane is not increased, and the sensitivity of the bone voiceprint sensor can be improved.

Description

Bone voiceprint sensor and electronic device

Technical Field

The utility model relates to a sensor technical field, in particular to 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.

In the related art, 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; the sensor unit is used for converting the vibration signal into an electric signal.

The vibration pickup unit generally comprises a vibration pickup shell, an elastic membrane arranged in the vibration pickup shell, and a vibration adjusting piece (mass block) arranged on the elastic membrane, wherein the size of the vibration adjusting piece (mass block) can greatly influence the performance of the bone voiceprint sensor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bone vocal print sensor aims at improving bone vocal print sensor's performance.

In order to achieve the above object, the utility model provides a bone acoustic line sensor, include:

the bone vibration picking device comprises a vibration picking unit, a vibration picking unit and a vibration adjusting unit, wherein the vibration picking unit is used for picking an external bone vibration signal to generate a response vibration signal and comprises a vibration picking shell, an elastic membrane arranged in the vibration picking shell and a vibration adjusting piece arranged on the elastic membrane, the vibration adjusting piece comprises an adjusting main body connected with the elastic membrane and a lateral protruding part arranged on the side surface of the adjusting main body, and a spacing interval is formed between the lateral protruding part and the elastic membrane; and

a sensor unit for converting the responsive vibration signal into an electrical signal.

Optionally, the lateral projection is an annular structure.

Optionally, the adjusting body includes a first adjusting portion connected to the elastic membrane, and a second adjusting portion connected to a side of the first adjusting portion away from the elastic membrane, and the lateral protrusion is disposed on a side of the second adjusting portion.

Optionally, the thickness of the lateral protrusion is equal to the thickness of the second adjustment part; and/or the presence of a gas in the gas,

the outer contour shape of the lateral convex part is the same as that of the first adjusting part.

Optionally, a ratio of the thickness of the second regulating part to the thickness of the first regulating part is greater than or equal to 0.1 and less than or equal to 100; and/or the presence of a gas in the gas,

the projection of the lateral convex part and the second adjusting part on the elastic membrane has a first area, the projection of the first adjusting part on the elastic membrane has a second area, and the ratio of the second area to the first area is more than 1 and less than or equal to 100 and/or,

the lateral protruding part, the first adjusting part and the second adjusting part are integrally arranged; or the lateral protruding part and the second adjusting part are integrally arranged and are in split fit connection with the first adjusting part.

Optionally, the longitudinal section of the vibration adjusting member is trapezoidal or kidney-shaped.

Optionally, the lateral protrusion is provided in a plurality, and the plurality of lateral protrusions are distributed at intervals in the circumferential direction of the adjustment body.

Optionally, the sensor unit includes a package housing and a sensor chip disposed in the package housing, the vibration pickup housing is mounted in the package housing, and a sound hole communicating the vibration pickup housing with the package housing is formed in the package housing.

Optionally, the vibration adjusting member is disposed on a side of the elastic membrane facing the sound hole, and the vibration adjusting member further includes an adjusting protrusion disposed on a surface of the adjusting body, and the adjusting protrusion extends into the sound hole.

The utility model also provides an electronic equipment, include as above bone vocal print sensor.

The bone voiceprint sensor of the utility model can effectively utilize the space in the vibration pickup shell to increase the quality of the vibration adjusting piece under the condition of not increasing the connecting area of the vibration adjusting piece and the elastic membrane by arranging the lateral convex part arranged at the interval with the elastic membrane on the side surface of the adjusting main body, thereby improving the sensitivity of the bone voiceprint sensor and improving the performance of the bone voiceprint sensor; and is favorable for realizing the miniaturized design of the bone voiceprint sensor. That is to say, the utility model discloses bone vocal print sensor has promoted space utilization, is favorable to reducing the product size, has promoted product property ability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 structural diagram of an embodiment of the bone voiceprint sensor of the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the bone voiceprint sensor of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Bone voiceprint sensor	211	Sound hole
10	Vibration pickup unit	212	Air release hole
				11	Vibration pick-up shell	213	Substrate
12	Elastic film	214	Connecting plate
				121	The first vent hole	2141	Electrical connection part
13	Vibration adjusting member	215	Boarding board
				132	Regulating protrusion	22	Sensor chip
133	Adjusting body	221	Front cavity
				1331	A first regulating part	222	Induction film
1332	Second regulating part	223	Second vent hole
				134	Lateral projection	23	Electrical connector
20	Sensor unit	70	ASIC chip
				21	Packaging shell

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that if the embodiments of the present invention are described with reference to "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and is 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 scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides a bone voiceprint sensor and electronic equipment. The bone voiceprint sensor is used in an electronic device, which may be, but is not limited to, a headset, an earphone, a smart watch, a smart bracelet, a vehicle noise reduction device, a vibration sensing device, and other electronic devices known to those skilled in the art.

In an embodiment of the present invention, as shown in fig. 1 and 2, the bone voiceprint sensor 100 includes a vibration pickup unit 10 and a sensor unit 20, the vibration pickup unit 10 is connected to the sensor unit 20, that is, the vibration pickup unit 10 is combined with the sensor unit 20, the vibration pickup unit 10 is configured to pick up a bone vibration signal from the outside (such as a wearer, or other vibration sources, hereinafter, described by taking the wearer as an example) to generate a response vibration signal, and transmit the response vibration signal to the sensor unit 20, and the sensor unit 20 is configured to convert the received vibration signal into an electrical signal. It is understood that, without loss of generality, a sealed vibration transmission air channel is formed between the vibration pickup unit 10 and the sensor unit 20, so that the response vibration signal is transmitted to the sensor unit 20 through the sealed vibration transmission air channel.

Further, as shown in fig. 1 and 2, the vibration pickup unit 10 includes a vibration pickup housing 11 and an elastic membrane 12 provided in the vibration pickup housing 11.

Specifically, the elastic membrane 12 is installed in the vibration pickup housing 11, and the vibration pickup housing 11 can protect the elastic membrane 12. The vibration pickup shell 11 can transmit bone vibration of a wearer speaker to the elastic membrane 12, and the elastic membrane 12 is used for picking up the bone vibration of the wearer speaker to vibrate so as to form a response vibration signal; the elastic membrane 12 drives the gas in the sealed vibration transmission air channel to vibrate when vibrating, so as to transmit a response vibration signal to the sensor unit 20 through the sealed vibration transmission air channel.

The elastic membrane 12 may be a membrane having elastic deformation capability, including but not limited to a plastic membrane, a paper membrane, a metal membrane, a biological membrane, and the like. Further, the elastic film 12 may have a single-layer structure or may have a multi-layer composite film. The elastic membrane 12 may be made of a single material or a composite material of different materials. And will not be described in detail herein.

Further, as shown in fig. 1 and 2, the vibration pickup unit 10 further includes a vibration adjusting member 13 provided on the elastic membrane 12.

In this way, the vibration adjuster 13 is used to adjust the vibration of the elastic membrane 12, so that the vibration of the elastic membrane 12 is better matched with the bone vibration signal of the wearer, and the sensitivity of the bone voiceprint sensor 100 can be improved. Moreover, the vibration adjusting member 13 vibrates along with the elastic membrane 12, so that the mass of the elastic membrane 12 can be increased when vibrating, and the interference of external factors (such as sound waves) can be effectively avoided.

Without loss of generality, the projection of the vibration adjusting member 13 on the elastic membrane 12 should be smaller than the elastic membrane 12, as shown in fig. 1 and 2.

Alternatively, the vibration adjusting member 13 may be bonded to the elastic membrane 12 by glue. Thus, the installation of the vibration adjusting member 13 can be made simple, convenient and firm.

Further, as shown in fig. 1 and 2, the vibration adjusting member 13 includes an adjusting body 133 connected to the elastic membrane 12, and a lateral protrusion 134 disposed on a side surface of the adjusting body 133, wherein a clearance is formed between the lateral protrusion 134 and the elastic membrane 12. Specifically, the lateral protrusion 134 faces the side of the elastic membrane 12, and forms a clearance with the surface of the elastic membrane 12. When the elastic membrane vibrates, the magnitude of the avoiding interval can change along with the vibration of the elastic membrane.

In this way, the space in the vibration pickup housing 11 can be effectively utilized to increase the mass of the vibration adjusting piece 13 without increasing the connecting area of the vibration adjusting piece 13 and the elastic membrane 12, so that the sensitivity of the bone voiceprint sensor 100 can be improved, and the performance of the bone voiceprint sensor 100 can be improved; and facilitates a compact design of the bone voiceprint sensor 100.

That is to say, the bone voiceprint sensor 100 in this embodiment improves the space utilization rate, is beneficial to reducing the product size, and improves the product performance.

Alternatively, the connection area of the vibration adjusting member 13 and the elastic membrane 12 may be reduced without reducing the mass of the vibration adjusting member 13 to improve the performance of the bone voiceprint sensor 100.

Further, as shown in fig. 1 and 2, the lateral projection 134 is an annular structure. Thus, on the one hand, the difficulty of manufacturing the vibration adjusting piece 13 can be reduced, and on the other hand, the mass of the vibration adjusting piece 13 can be increased to a large extent. Of course, in other embodiments, it is also possible to: the lateral protrusions 134 are provided in plurality, and the plurality of lateral protrusions 134 are spaced apart in the circumferential direction of the adjustment body 133; in this way, the mass of the vibration adjusting member 13 can also be increased. In this embodiment, each of the lateral protrusions 134 is optionally uniformly distributed to improve the force uniformity of the elastic membrane 12.

Further, as shown in fig. 1, the adjusting body 133 includes a first adjusting portion 1331 connected to the elastic membrane 12, and a second adjusting portion 1332 connected to a side of the first adjusting portion 1331 away from the elastic membrane 12, and the lateral protrusion 134 is disposed at a side of the second adjusting portion 1332. In this way, the formation of the dislocation preventing space between the lateral projection 134 and the elastic membrane 12 can be achieved.

In an embodiment, the lateral protrusion 134, the first adjusting portion 1331 and the second adjusting portion 1332 may be integrally formed to avoid assembly. The lateral protrusion 134 and the second adjusting portion 1332 may also be integrally disposed and separately connected to the first adjusting portion 1331 in a matching manner, so as to reduce the difficulty of production.

Further, as shown in fig. 1, the thickness of the lateral protrusion 134 is equal to that of the second regulation part 1332. In this way, the vibration adjusting member 13 is formed in a stepped structure, so that the mass of the vibration adjusting member 13 can be increased to a large extent.

Further, the outer contour shape of the lateral protrusion 134 is the same as that of the first regulation part 1331. In this way, the elastic membrane 12 can be stressed more uniformly during the vibration process, so as to reduce the risk of cracking; at the same time, the stability of the vibration of the elastic membrane 12 can be improved to improve the performance of the bone voiceprint sensor 100. For example, such as: the outer contour of the lateral protruding portion 134 is circular, the outer contour of the first adjusting portion 1331 is circular, and the lateral protruding portion 134 and the projection of the first adjusting portion 1331 on the elastic membrane 12 are concentrically arranged; alternatively, the outer contour of the lateral protruding portion 134 is an ellipse, the outer contour of the first adjusting portion 1331 is an ellipse, and the lateral protruding portion 134 and the projection of the first adjusting portion 1331 on the elastic membrane 12 are concentrically arranged; alternatively, the outer contour of the lateral protruding portion 134 is square, the outer contour of the first adjusting portion 1331 is square, and the lateral protruding portion 134 and the projection of the first adjusting portion 1331 on the elastic membrane 12 are concentrically arranged; and so on.

Further, a ratio of the thickness of the second regulating portion 1332 to the thickness of the first regulating portion 1331 is greater than or equal to 0.1 and less than or equal to 100.

It will be appreciated that if this ratio is too large, it is easy for the lateral projections 134 to interfere with the elastic membrane 12 during vibration; if the ratio is too small, it is not favorable to increase the mass of the vibration control member 13.

Optionally, a ratio of the thickness of the second regulating part 1332 to the thickness of the first regulating part 1331 is greater than or equal to 0.2 and less than or equal to 10.

Optionally, a ratio of the thickness of the second regulating part 1332 to the thickness of the first regulating part 1331 is greater than or equal to 0.3 and less than or equal to 6.

Optionally, a ratio of the thickness of the second regulating part 1332 to the thickness of the first regulating part 1331 is greater than or equal to 0.3 and less than or equal to 4.5.

Further, the projection of the lateral protrusion 134 and the second adjusting portion 1332 on the elastic membrane 12 has a first area, and the projection of the first adjusting portion 1331 on the elastic membrane 12 has a second area, and the ratio of the second area to the first area is greater than 1 and less than or equal to 100.

It is understood that if the ratio is too small, it is not favorable to increase the mass of the vibration adjusting member 13; if the ratio is too large, the "head heavy" and the foot light "are easily caused.

Optionally, a ratio of the second area to the first area is greater than or equal to 1.1 and less than or equal to 20.

Optionally, a ratio of the second area to the first area is greater than or equal to 1.2 and less than or equal to 10.

Optionally, a ratio of the second area to the first area is greater than or equal to 1.3 and less than or equal to 6.

Of course, in other embodiments, the lateral protrusion 134 is designed to make the vibration adjusting member 13 have a three-step, four-step, or more-step structure.

Of course, in other embodiments, by designing the lateral protrusion 134, the longitudinal section of the vibration adjusting member 13 (i.e. the section passing through the center line of the vibration adjusting member 13) may be trapezoidal or kidney-shaped.

Further, as shown in fig. 1 and 2, the sensor unit 20 includes a package housing 21 and a sensor chip 22 disposed in the package housing 21, the vibration pickup housing 11 is mounted on the package housing 21, a sound hole 211 is disposed on the package housing 21, and the sound hole 211 communicates the sensor unit 20 and the vibration pickup unit 10. Specifically, the sound hole 211 communicates the package housing 21 and the vibration pickup housing 11; it will be appreciated that the acoustic port 211 is used to form a sealed vibration-transmitting air path.

Specifically, the response vibration signal is transmitted into the package housing 21 through the sound hole 211, and is transmitted to the sensor chip 22, and the sensor chip 22 is configured to convert the received vibration signal into an electrical signal.

Specifically, as shown in fig. 1 and 2, the elastic membrane 12 divides the space in the vibration pickup housing 11 into a first cavity and a second cavity, and the first cavity and the second cavity are respectively located at two sides of the elastic membrane 12 (in the state shown in fig. 1, the first cavity is located at the upper side of the elastic membrane 12, and the second cavity is located at the lower side of the elastic membrane 12); wherein the second cavity is in communication with the sound aperture 211.

Specifically, pick up the casing 11 that shakes for the open casing that sets up of one end, the open end of picking up the casing 11 that shakes is installed in encapsulation casing 21, and encapsulation casing 21 shutoff is picked up the uncovered of casing 11 that shakes, and encapsulation casing 21 communicates through sound hole 211 with picking up the casing 11 that shakes. Thus, the structure can be simplified.

Alternatively, the open end of the vibration pickup housing 11 may be glued to the package housing 21. Of course, the vibration pickup housing 11 may be provided in other structural forms, and need not be described in detail herein.

Alternatively, the vibration adjusting member 13 may be provided on either side of the elastic membrane 12; that is, the vibration adjusting member 13 may be disposed in the first cavity or the second cavity.

In order to further increase the mass of the vibration adjusting member 13, in another embodiment of the present invention, as shown in fig. 2, it is possible to make: the vibration adjusting member 13 is disposed on one side of the elastic membrane 12 facing the sound hole 211, and the vibration adjusting member 13 further includes an adjusting protrusion 132 disposed on the surface of the adjusting body 133, and the adjusting protrusion 132 extends into the sound hole 211. In this way, the mass of the vibration adjusting member 13 can be increased without changing or substantially changing the size of the bone voiceprint sensor 100, thereby facilitating the improvement of the sensitivity of the bone voiceprint sensor 100; and simultaneously, the space utilization rate can be improved. In this embodiment, optionally, the adjusting protrusion 132 further protrudes into the package housing 21 to protrude into the front cavity 221 of the sensor chip 22, so that the acoustic hole 211 can be enlarged to reduce the influence of the front cavity 221 of the sensor chip 22 on high frequency, so that the high frequency is flatter, and thus the reliability of the bone voiceprint sensor 100 can be improved.

Further, as shown in fig. 1 and 2, the package housing 21 and/or the vibration pickup housing 11 are provided with air release holes 212, and the air release holes 212 are used for releasing air when assembling the vibration pickup unit 10 and the sensor unit 20. In particular, the bleed hole 212 communicates with the external environment. Thus, by providing the air release hole 212, when assembling the vibration pickup unit 10 and the sensor unit 20, the failure of the vibration pickup unit 10 or the sensor chip 22 due to the air pressure difference between the inner space and the outer space of the package housing 21 or the vibration pickup housing 11 can be avoided, so that the difficulty in assembling the bone-vocal print sensor 100 can be reduced.

However, when the bone voiceprint sensor 100 is applied, i.e., applied to an electronic device, the air release hole 212 needs to be blocked so as not to affect the performance of the bone voiceprint sensor 100. Alternatively, the air release hole 212 may be blocked by a sealant, an adhesive tape, or a sealing plug.

It should be noted that, as shown in fig. 1, if the air release hole 212 is provided in the vibration pickup housing 11, optionally, the air release hole 212 is communicated with the first cavity; as shown in fig. 2, the air release hole 212 is arranged at the top of the vibration pickup shell 11; optionally, the air relief hole 212 is an annular hole.

If the air release hole 212 is disposed on the package housing 21, it should be noted that, compared to disposing the air release hole 212 on the vibration pickup housing 11, the air release hole 212 disposed on the package housing 21 does not need to form a hole on the vibration pickup housing 11, so that the vibration pickup area of the vibration pickup housing 11 is not reduced, thereby being beneficial to improving the performance of the bone acoustic streak sensor 100.

Further, as shown in fig. 1 and 2, the package housing 21 further includes a substrate 213, and the sound hole 211 and the sensor chip 22 are disposed on the substrate 213; the vibration pickup housing 11 is mounted on the substrate 213. Specifically, the open end of the vibration pickup housing 11 is mounted on the substrate 213. Thus, the structure can be simplified.

Without loss of generality, as shown in fig. 1 and 2, the sensor unit 20 further includes an ASIC (application Specific Integrated circuit) chip 70 disposed in the package housing 21, and the ASIC chip 70 is electrically connected to the sensor chip 22 to process an electrical signal generated by the sensor chip 22.

Specifically, the ASIC chip 70 may be provided on the surface of the substrate 213, or the ASIC chip 70 may be embedded in the substrate 213. It is noted that embedding the ASIC chip 70 in the substrate 213 facilitates assembly of the bone voiceprint sensor 100.

Specifically, the substrate 213 is a circuit board, such as a PCB, and the ASIC chip 70 is electrically connected to the substrate 213.

Further, as shown in fig. 1 and 2, the package housing 21 includes a connection board 214, the connection board 214 is disposed opposite to the substrate 213, and the connection board 214 is configured to be mounted on a main control board of the electronic device.

Specifically, the electronic device includes an electronic control board on which the bone voiceprint sensor 100 can be mounted when the bone voiceprint sensor 100 is applied to the electronic device. Specifically, the connection board 214 of the package housing 21 is mounted on the main control board, and optionally, the connection board 214 is attached to the surface of the main control board.

Optionally, as shown in fig. 1 and 2, the connection board 214 is provided with an electrical connection portion 2141 for electrically connecting with an external circuit (i.e., a circuit of the electronic device), and the electrical connection portion 2141 is electrically connected with the substrate 213 to electrically connect with the ASIC chip 70 and the sensor chip 22.

As such, when the connection board 214 is mounted on the electronic control board, the electrical connection portions 2141 may be electrically connected with the electronic control board to electrically connect the sensor chip 22 with an external circuit (i.e., a circuit of the electronic device).

Optionally, as shown in fig. 1 and 2, the package housing 21 further includes a surrounding plate 215 disposed on the periphery of the base plate 213, the surrounding plate 215 forms an opening at an end far from the base plate 213, and the connecting plate 214 is connected to the opening.

Optionally, the sensor unit 20 further includes an electrical connector 23, and the electrical connector 23 electrically connects the substrate 213 and the electrical connector 2141. Optionally, the electrical connector 23 is embedded in the enclosure 215.

It should be noted that, if the air release hole 212 is provided on the package housing 21, optionally, the air release hole 212 is provided on the connecting plate 214. Thus, by arranging the air release hole 212 on the connecting plate 214, when the bone voiceprint sensor 100 is mounted (e.g., mounted) on the main control plate, the air release hole 212 can be blocked by the original procedure of filling glue, so that the field application procedure can be simplified, and the production cost can be reduced.

Alternatively, as shown in fig. 1 and 2, the elastic membrane 12 and the vibration adjusting member 13 are provided with a first vent hole 121.

Optionally, as shown in fig. 1 and 2, the sensing film 222 of the sensor chip 22 is provided with a second vent hole 223.

Alternatively, the sensor chip 22 may be a microphone chip or a pressure sensor chip 22. That is, the sensor unit 20 may employ a MEMS microphone or a MEMS pressure sensor, so that the difficulty of designing the bone voiceprint sensor 100 can be reduced.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A bone voiceprint sensor, the bone voiceprint sensor comprising:

2. The bone voiceprint sensor of claim 1 wherein said lateral projection is an annular structure.

3. The bone voiceprint sensor of claim 2 wherein the adjustment body includes a first adjustment portion connected to the elastic membrane and a second adjustment portion connected to a side of the first adjustment portion remote from the elastic membrane, the lateral projection being provided on a side of the second adjustment portion.

4. The bone voiceprint sensor of claim 3 wherein the lateral projection has a thickness equal to a thickness of the second adjustment portion; and/or the presence of a gas in the gas,

5. The bone voiceprint sensor of claim 4 wherein a ratio of a thickness of the second adjustment portion to a thickness of the first adjustment portion is greater than or equal to 0.1 and less than or equal to 100; and/or the presence of a gas in the gas,

6. The bone voiceprint sensor of claim 2 wherein said vibration modulation member is trapezoidal or kidney shaped in longitudinal cross-section.

7. The bone voiceprint sensor of claim 1 wherein said lateral projections are provided in a plurality, said plurality being spaced apart in a circumferential direction of said adjustment body.

8. The bone voiceprint sensor according to any one of claims 1 to 7, wherein the sensor unit comprises a package housing and a sensor chip arranged in the package housing, the vibration pickup housing is mounted on the package housing, and a sound hole communicating the vibration pickup housing and the package housing is formed on the package housing.

9. The bone voiceprint sensor of claim 8 wherein said vibration modifier is disposed on a side of said elastic membrane facing said sound aperture, said vibration modifier further comprising a modifier protrusion disposed on a surface of said modifier body, said modifier protrusion extending into said sound aperture.

10. An electronic device characterized by comprising a bone voiceprint sensor according to any one of claims 1 to 9.