CN216669853U

CN216669853U - Acoustic imaging sensor

Info

Publication number: CN216669853U
Application number: CN202123284576.XU
Authority: CN
Inventors: 施绍鲁; 曹烨
Original assignee: iFlytek Co Ltd
Current assignee: iFlytek Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-03
Anticipated expiration: 2031-12-24

Abstract

The utility model provides an acoustic imaging sensor, and belongs to the technical field of acoustic imaging. The acoustic imaging sensor includes: the microphone hole is provided with a waterproof breathable film, and the camera hole is sealed by a waterproof transparent plate; the cover plate is connected with the main shell, the first sealing ring is clamped between the cover plate and the main shell, the cover plate and the first sealing ring define a mounting cavity together; at least one circuit board, at least one circuit board is installed in the installation intracavity, is equipped with the microphone on at least one circuit board, and the microphone corresponds the setting with the microphone hole, is equipped with the camera on at least one circuit board, and the camera corresponds the setting with the camera hole. The acoustic imaging sensor provided by the utility model can realize better waterproof performance through multiple waterproof seals, thereby meeting the requirements of different working conditions.

Description

Acoustic imaging sensor

Technical Field

The utility model relates to the technical field of acoustic imaging, in particular to an acoustic imaging sensor.

Background

The acoustic imaging sensor is an acoustic module of an acoustic imager capable of generating an acoustic image by acoustic imaging techniques. The acoustic imager can help people to quickly locate the noise position by the aid of the acoustic imaging sensor, and has great commercial value.

However, the acoustic imaging sensor in the related art has no waterproof performance or poor waterproof performance, so that the acoustic imager cannot meet severe working conditions.

Disclosure of Invention

The utility model provides an acoustic imaging sensor, which is used for solving the defect of poor waterproof performance of an acoustic module of an acoustic imager in the prior art and realizing better waterproof performance of the acoustic imaging sensor.

The present invention provides an acoustic imaging sensor comprising:

the camera comprises a main shell, a camera body and a camera body, wherein the main shell is provided with a microphone hole and a camera hole, the microphone hole is provided with a waterproof breathable film, and the camera hole is sealed by a waterproof transparent plate;

the cover plate is connected with the main shell, the first sealing ring is clamped between the cover plate and the main shell, the cover plate and the first sealing ring jointly define a mounting cavity;

at least one circuit board, at least one circuit board install in the installation intracavity, be equipped with the microphone on at least one circuit board, the microphone with the microphone hole corresponds the setting, be equipped with the camera on at least one circuit board, the camera with the camera hole corresponds the setting.

According to the present invention, there is provided an acoustic imaging sensor, further comprising: the elastic piece, waterproof ventilated membrane sets up the internal surface of main casing body, the elastic piece centre gripping is in the circuit board with between the waterproof ventilated membrane.

According to the acoustic imaging sensor provided by the utility model, the elastic piece is made of foam.

According to the acoustic imaging sensor provided by the utility model, the elastic piece is provided with a first through hole corresponding to the microphone hole.

According to the acoustic imaging sensor provided by the utility model, the microphone is arranged on one side of the circuit board, which is far away from the microphone hole, and the circuit board is provided with a second through hole corresponding to the microphone hole.

According to the acoustic imaging sensor provided by the utility model, the waterproof transparent plate is adhered to the inner surface of the main shell through waterproof glue.

According to the acoustic imaging sensor provided by the utility model, the inner surface of the main shell is provided with a flange, the flange surrounds the camera hole and is spaced from the camera hole, and the waterproof transparent plate is bonded with the main shell and the flange.

According to the acoustic imaging sensor provided by the utility model, at least one of the cover plate and the main shell is provided with a first sealing groove, one part of the first sealing ring is arranged in the first sealing groove, and the other part of the first sealing ring protrudes out of the first sealing groove.

According to the acoustic imaging sensor provided by the utility model, the cover plate is provided with the avoidance hole, one side of the circuit board, which faces the cover plate, is provided with the plug connector, the plug connector penetrates through the avoidance hole, the avoidance hole is provided with the second sealing ring, and the second sealing ring is sleeved outside the plug connector.

According to the acoustic imaging sensor provided by the utility model, the cover plate is provided with a plurality of mounting blind holes, the mounting blind holes surround the second sealing ring, and the mounting blind holes are used for mounting the acoustic imaging sensor on the whole acoustic imager.

According to the acoustic imaging sensor provided by the utility model, multiple waterproof sealing can be carried out on the acoustic imaging sensor through the waterproof breathable film, the waterproof transparent plate and the first sealing ring, so that the acoustic imaging sensor can have better waterproof performance, and thus the requirements of different working conditions are met.

Drawings

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

FIG. 1 is a front view of an acoustic imaging sensor provided by the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at point I;

FIG. 4 is an enlarged partial view of the second section of FIG. 2;

FIG. 5 is a left side view of an acoustic imaging sensor provided by the present invention;

FIG. 6 is a schematic diagram of a negative structure of an acoustic imaging sensor provided by the present invention;

fig. 7 is a cross-sectional view at B-B in fig. 6.

Reference numerals:

110: a main housing; 111: a microphone aperture; 112: a camera hole; 113: a flange; 120: a cover plate; 121: avoiding holes; 122: installing blind holes; 130: a circuit board; 131: a camera; 132: a plug-in unit; 140: an elastic member; 150: a waterproof breathable film; 160: a waterproof transparent plate; 170: a first seal ring; 171: a first seal groove; 180: a second seal ring; 190: countersunk head screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.

The acoustic imager combines the acoustic imaging technology and the electromagnetic imaging technology, and can quickly locate the noise position.

The acoustic imaging sensor is one of important modules of the acoustic imager, and the waterproof performance of the acoustic imaging sensor directly determines the waterproof performance of the acoustic imager.

The acoustic imaging sensor provided by the embodiment of the present invention is described in detail by specific embodiments with reference to fig. 1 to 7.

The acoustic imaging sensor in the present embodiment can achieve good waterproof performance by a multiple waterproof structure, which is described in detail below.

As shown in fig. 1 and 2, the acoustic imaging sensor includes: main housing 110, cover plate 120, first seal ring 170, and circuit board 130.

As shown in fig. 1, the main housing 110 is provided with a microphone hole 111 and a camera hole 112.

The main housing 110 is a shell-shaped structure having a plurality of through holes, and the main housing 110 is used to define an internal space of the acoustic imaging sensor.

It is understood that the main housing 110 is a shell-shaped structure, and the shape of the main housing 110 can be designed specifically according to the requirement, and is not limited herein.

For example, the shape of the main housing 110 may be square or circular.

The plurality of through holes are a microphone hole 111 and a camera hole 112.

Wherein the microphone hole 111 is an array of through holes on the main housing 110, sound can be collected by the acoustic imaging sensor through the microphone hole 111.

The microphone holes 111 are symmetrically distributed on the main housing 110, so that uniform sampling in all directions in space can be ensured.

The number of the microphone holes 111 may be plural, and the number of the microphone holes 111 may be set as needed.

The microphone hole 111 may have various shapes, such as a circular through hole or a square through hole.

The diameter of the microphone hole 111 may be set according to the microphone type number.

The distribution position, number and shape of the microphone holes 111 may include the following forms:

for example, the microphone holes 111 may be arranged in 64 ways, symmetrically and uniformly distributed on the square main case 110 as shown in fig. 1.

For example, in the case of a large acoustic imaging sensor, the microphone holes 111 may be arranged in 81 paths, and uniformly and symmetrically distributed in a radial shape on the circular main housing 110 with the center of the circle as a starting point.

It is understood that the distribution position, number and shape of the microphone holes 111 on the main housing can be set according to specific needs, and is not limited herein.

The camera hole 112 is a through hole in the main housing 110, and light can pass through the camera hole 112 and be collected by the acoustic imaging sensor.

The camera hole 112 may be located at the center of the main housing 110, and may take the form of:

for example, as shown in fig. 1, the main housing 110 may have a square housing structure, and the camera hole 112 is located at the intersection of two diagonal lines.

For example, the main housing 110 may have a circular housing structure, and the camera hole 112 is located at the center of the circle.

A waterproof and breathable film 150 is arranged at the microphone hole 111.

As shown in fig. 2, a waterproof breathable film 150 is provided at the microphone hole 111 for waterproof sealing at the microphone hole 111.

The waterproof and breathable film 150 has the characteristics of air-permeable and water-impermeable objects.

The waterproof breathable film 150 may be a film of an electronic-based polymeric waterproof material, such as a polytetrafluoroethylene film or a polytetrafluoroethylene composite film.

The waterproof breathable membrane 150 prevents dust, dirt, or liquids from entering the microphone aperture 111.

In some embodiments, the waterproof breathable membrane 150 may be disposed on an inner surface of the main housing 110, and the main housing 110 may protect the waterproof breathable membrane 150.

The waterproof and breathable film 150 has at least the following two expressions at the microphone hole 111:

first, the waterproof breathable film 150 may be a single film.

In this embodiment, the waterproof breathable membrane 150 under the array of microphone holes 111 of the main housing 110 may be a whole membrane, and the waterproof breathable membrane 150 has through holes corresponding to the camera holes 112.

In the installation process, it needs to be ensured that the waterproof breathable film 150 can completely cover the microphone hole 111 array, and the through hole on the waterproof breathable film 150 is consistent with the camera hole 112 on the main shell 110 in position, so that waterproof sealing at the microphone hole 111 can be realized, and the installation is convenient.

And secondly, the waterproof breathable film 150 can be a plurality of films, and the number of the waterproof breathable films 150 is consistent with that of the microphone holes 111.

In this embodiment, a corresponding waterproof, breathable membrane 150 may be fitted at the location of each microphone hole 111.

In the installation process, it is required to ensure that each waterproof breathable film 150 covers the corresponding microphone hole 111, so that waterproof sealing at the microphone hole 111 can be realized, and materials are saved.

The camera hole 112 is sealed by a waterproof transparent plate 160.

As shown in fig. 2, a waterproof transparent plate 160 is attached to the inner surface of the main housing 110 for waterproof sealing at the camera hole 112 on the main housing 110.

The waterproof transparent plate 160 is a transparent plate structure, and the outer edge of the waterproof transparent plate 160 is larger than the camera hole 112.

The waterproof transparent plate 160 may be a transparent and waterproof plate-shaped material, such as glass or acryl sheet.

In some embodiments, the waterproof transparent plate 160 may be adhered to the inner surface of the main housing 110 by waterproof glue.

The waterproof glue is a glue capable of preventing water, such as rubber glue, polyurethane glue or silane elastic adhesive.

In this embodiment, as shown in fig. 2, a portion of the waterproof transparent plate 160, which is larger than the camera hole 112 in the upper surface, is adhered to the inner surface of the main housing 110 by a waterproof adhesive, so that external dust or liquid can be prevented from entering the interior of the acoustic imaging sensor through the camera hole 112.

In some embodiments, as shown in fig. 3, the inner sidewall of the main housing 110 may further be provided with a flange 113, and the flange 113 may surround the camera hole 112 and be spaced apart from the camera hole 112.

The flange 113 is a protruding structure on the inner sidewall of the main housing 110, the flange 113 may form a right angle with the inner sidewall of the main housing 110, and the flange 113 is in clearance fit with the waterproof transparent plate 160.

The flange 113 can cooperate with the waterproof transparent plate 160 to form a right-angle sealing structure, which has a better waterproof sealing effect.

The inner side wall of the flange 113 is concentric with the center of the camera hole 112, the inner side wall of the flange 113 is larger than the diameter of the camera hole 112, the flange 113 can surround the camera hole 112, and the flange 113 is spaced apart from the camera hole 112.

In this embodiment, the upper surface of the waterproof transparent plate 160 may be attached to the inner sidewall of the main housing 110 by waterproof glue, and the side surface of the waterproof transparent plate 160 may be attached to the inner sidewall flange 113 of the main housing 110 by waterproof glue.

In other words, the upper surface and the side surface of the waterproof transparent plate 160 can be respectively adhered to different sides of the main housing 110 by waterproof glue, so as to form a right-angle waterproof structure.

The right angle waterproof structure may further prevent external dust or liquid from entering the interior of the acoustic imaging sensor through the camera hole 112.

As shown in fig. 5, the cover plate 120 is coupled to the main housing 110.

The cover plate 120 is the other half of the housing of the acoustic imaging sensor, and the cover plate 120 is used to define a mounting cavity of the acoustic imaging sensor.

The cover plate 120 corresponds to the main housing 110, and the cover plate 120 is connected to the main housing 110.

In some embodiments, the cover plate 120 may be detachably and fixedly connected to the main housing 110, so as to facilitate replacement of internal components.

In some embodiments, the cover plate 120 may be connected to the main housing 110 by screws, such as countersunk screws or flat head screws.

In some embodiments, as shown in fig. 2 and 4, the cover plate 120 may be coupled with the main housing 110 by a countersunk screw 190.

As shown in fig. 2 and 4, a first seal ring 170 is sandwiched between the cover plate 120 and the main casing 110.

The first sealing ring 170 may be an elastic and resilient O-ring, such as a fluorine O-ring or a silicone O-ring.

The first sealing ring 170 may prevent external dust or liquid from entering the interior of the acoustic imaging sensor through a gap between the cover plate 120 and the main housing 110.

In some embodiments, a first sealing groove 171 may be formed in at least one of the cover plate 120 and the main casing 110, and a portion of the first sealing ring 170 is installed in the first sealing groove 171, and another portion protrudes out of the first sealing groove 171.

The first sealing groove 171 may be a groove structure, and the first sealing groove 171 is used for accommodating a part of the first sealing ring 170.

The first sealing groove 171 may have various cross-sectional shapes such as a rectangular shape and a circular shape, which are set as needed and are not limited herein.

The main housing 110 and the cover plate 120 may define a mounting cavity together with the first sealing ring 170.

The mounting cavity is an inner space of the acoustic imaging sensor, and various parts of the acoustic imaging sensor can be placed in the mounting cavity.

In this embodiment, the nesting manner of the cover plate 120, the main housing 110 and the first sealing ring 170 may be at least one of the following manners:

first, the main housing 110 may be provided with a first sealing groove 171.

In this embodiment, as shown in fig. 4, the first sealing groove 171 may be disposed on the inner surface of the main casing 110, and the first sealing groove 171 is disposed on the inner surface of the main casing 110 where the cover plate 120 contacts.

The first seal ring 170 may be a seal ring having a cross-section larger than that of the first seal groove 171.

A portion of the first seal ring 170 may be installed in the first seal groove 171 of the main casing 110, and another portion protrudes from the first seal groove 171 and contacts the cover plate 120.

It should be noted that the first sealing ring 170 is an elastic body, and when the main housing 110 and the cover plate 120 are assembled, an inner surface of the first sealing groove 171 and the cover plate 120 together define a space having a smaller volume than the first sealing ring 170, and the first sealing ring 170 is squeezed into the first sealing groove 171 to form a seal.

The first sealing groove 171 is disposed on the inner surface of the main housing 110 to achieve waterproof sealing among the first sealing ring 170, the main housing 110, and the cover plate 120, and the single-sided groove processing can simplify the processing steps.

Second, the cover plate 120 may be provided with a first seal groove 171.

In this embodiment, the first sealing groove 171 may be disposed on the cover plate 120, and the first sealing groove 171 is located where the inner surface of the cover plate 120 contacts the inner surface of the main casing 110.

A portion of the first sealing ring 170 may be installed in the first sealing groove 171 of the cover plate 120, and another portion protrudes from the cover plate 120 to contact the first sealing groove 171.

It should be noted that the first sealing ring 170 is an elastic body, and when the main housing 110 and the cover plate 120 are installed, an inner surface of the first sealing groove 171 and the main housing 110 together define a space having a smaller volume than the first sealing ring 170, and the first sealing ring 170 is squeezed into the first sealing groove 171 to form a seal.

The first sealing groove 171 is disposed on the inner surface of the cover plate 120 to achieve waterproof sealing among the first sealing ring 170, the main housing 110, and the cover plate 120, and the single-sided groove processing can simplify the processing procedure.

Third, the main housing 110 and the cover plate 120 may be respectively provided with a first sealing groove 171.

In this embodiment, the first sealing groove 171 may be divided into two parts, one part is disposed on the inner surface of the cover plate 120, and the other part is disposed on the inner surface of the main casing 110, and the two parts are correspondingly located to define a space of the first sealing groove 171.

The first seal ring 170 is a seal ring having a cross-section larger than that of the first seal groove 171.

The first seal ring 170 may be installed in the first seal groove 171.

By arranging the first sealing groove 171 at both the cover plate 120 and the inner surface of the main casing 110, a waterproof seal between the main casing 110 and the cover plate 120 can be achieved, and a better waterproof effect can be achieved due to the lengthened sealing path.

In the present embodiment, the sealing between the main housing 110 and the cover plate 120 in the acoustic imaging sensor can be achieved by using the first sealing ring 170.

At least one circuit board 130 is mounted within the mounting cavity.

The circuit board 130 is mounted in a mounting cavity defined by the main housing 110, the cover plate 120 and the first sealing ring 170, and can protect the circuit board 130.

The circuit board 130 is a carrier for electrical connection of electronic components in the acoustic imaging sensor. Circuit board 130 may be used to implement various functions of the acoustic imaging sensor.

At least one circuit board 130 may include the following conditions:

for one, the circuit board 130 may be one.

In some embodiments, as shown in fig. 2, the number of the circuit board 130 may be one, and all the electronic components of the acoustic imaging sensor may be disposed on the circuit board 130.

This kind of setting mode is through setting up all electronic components on same circuit board 130, can realize each item required function of acoustic imaging sensor on a circuit board to easy dismounting installs simply.

Second, the circuit board 130 may be plural.

In some embodiments, a plurality of circuit boards 130 may be installed in the installation cavity, and electronic components of each module in the acoustic imaging sensor may be distributed on different circuit boards 130 to jointly implement each required function of the acoustic imaging sensor.

For example, in an acoustic imaging sensor, an acoustic module may be disposed on one circuit board 130, an optical module disposed on one circuit board 130, and other modules disposed on another circuit board 130.

For example, in an acoustic imaging sensor, the optical module and other modules may be disposed on one circuit board 130 and the acoustic module may be disposed on another circuit board 130.

The acoustic imaging sensor can be assembled by selecting different circuit boards 130 according to different applicable scenes, and the use scene is flexible.

For example, where acoustic imaging is performed on a small device to ascertain the location of noise, the acoustic imaging sensor may assemble the circuit board 130 of one acoustic module and the circuit boards 130 of other modules.

For example, where acoustic imaging is performed on a larger device to ascertain the location of noise, the acoustic imaging sensor may assemble multiple pieces of the circuit board 130 of the acoustic module and circuit boards 130 of other modules. A larger range of sound signals can be collected.

The setting mode of the circuit board 130 can realize the functions of different modules of the acoustic imaging sensor on different circuit boards 130, the acoustic imaging sensor can be assembled in different modes of the circuit board 130 according to the functional requirements at any time, and the multifunctional and multi-scene use of the acoustic imaging sensor can be realized.

In some embodiments, the circuit board 130 can be detachably and fixedly connected with the main housing 110, so as to facilitate replacement of the circuit board 130.

The circuit board 130 may be connected to the main housing 110 by a screw, such as a countersunk head screw or a flat head screw.

In some embodiments, as shown in fig. 4, the circuit board 130 may be screwed to the cover plate 120.

At least one circuit board 130 is provided with a microphone (not shown).

In the acoustic imaging sensor of the present invention, the microphone is disposed on the surface of at least one circuit board 130.

Wherein the microphone is an energy conversion device in the acoustic imaging sensor, and the microphone is used for collecting sound signals.

The microphone may be used to collect sound signals transmitted into the acoustic imaging sensor through the microphone aperture 111 and convert the sound signals into electrical signals.

In some embodiments, the model of the microphone may be a MEMS microphone.

The microphone is disposed corresponding to the microphone hole 111.

The microphones may be a microphone array, and the positions of the microphones on the circuit board 130 and the microphone holes 111 on the main housing 110 are correspondingly arranged, so that sound signals can be better collected.

It should be noted that the diameter of the microphone hole 111 can be set correspondingly by the diameter required by the microphone type.

The arrangement mode of the microphone on the acoustic imaging sensor at least comprises the following two modes:

for one, the microphone may be disposed on a circuit board 130.

In this embodiment, the microphone may be disposed on one circuit board 130 of the acoustic imaging sensor, and one circuit board 130 provided with the microphone may satisfy the requirement of the acoustic imaging sensor for collecting the sound signal, and is convenient to assemble and disassemble.

Second, the microphones may be disposed on a plurality of circuit boards 130.

In this embodiment, the microphones may be disposed on a plurality of circuit boards 130 in the acoustic imaging sensor, and the plurality of circuit boards 130 provided with the microphones may be matched to meet the requirement of the acoustic imaging sensor for collecting sound signals, and the assembly is flexible.

At least one circuit board 130 is provided with a camera 131.

In the acoustic imaging sensor of the present invention, the camera 131 is disposed on the surface of at least one circuit board 130.

The camera 131 is used to collect optical signals, and can cooperate with a microphone to generate an acoustic image.

The camera 131 is provided corresponding to the camera hole 112.

The position of the camera 131 on the circuit board 130 corresponds to the position, number and size of the camera holes 112 on the main housing 110, so that optical signals can be better collected.

The camera 131 corresponds to the position of the camera hole 112, and may be represented as follows:

for example, as shown in fig. 1, the main housing 110 may have a square housing structure, and the camera hole 112 is located at the intersection of two diagonal lines. The camera 131 is correspondingly disposed at a position of the circuit board 130 corresponding to the camera hole 112.

For example, the main housing 110 may have a circular housing structure, and the camera hole 112 is located at the center of the circle. The camera 131 is correspondingly disposed at a position of the circuit board 130 corresponding to the camera hole 112.

It should be noted that, the diameter and the position of the camera hole 112 can be set correspondingly according to the model of the camera 131, so as to better collect light signals.

The arrangement of the camera 131 on the acoustic imaging sensor includes at least the following two ways:

for one, the camera 131 may be disposed on a circuit board 130.

In this embodiment, the camera 131 may be disposed on one circuit board 130 in the acoustic imaging sensor, and one circuit board 130 provided with the camera 131 may satisfy the collection of the optical signal by the acoustic imaging sensor, and is convenient to disassemble and assemble.

Second, the cameras 131 may be disposed on the plurality of circuit boards 130.

In this embodiment, the camera 131 may be disposed on a plurality of circuit boards 130 in the acoustic imaging sensor, and the cooperation of the plurality of circuit boards 130 on which the camera 131 is disposed may satisfy the collection of optical signals by the acoustic imaging sensor, and the assembly is flexible.

In some embodiments, as shown in fig. 3, the camera 131 may be disposed on a side of the circuit board 130 facing the waterproof transparent plate 160. Light can penetrate the waterproof transparent plate 160 through the camera hole 112 to be collected by the camera 131, and collection of light signals can be achieved.

The microphone may be disposed on the circuit board 130 in the following manner:

for example, as shown in fig. 1, in the case that the microphone holes 111 are arranged in 64 ways and the microphone holes 111 are symmetrically and uniformly distributed on the main housing 110, 64 microphones are correspondingly arranged on the circuit board 130, the microphones are symmetrically and uniformly distributed on the circuit board 130, and the positions of the microphones correspond to the microphone holes 111 one by one.

For example, in a case where a large acoustic imaging sensor is required, the number of the microphone holes 111 is 81, and the microphone holes 111 are uniformly and symmetrically distributed in an emitting shape on the circular main housing 110 with the center of circle as a starting point, 81 microphones are correspondingly arranged on the circuit board 130, the microphones are uniformly and symmetrically distributed in an emitting shape on the circuit board 130 with the center of circle as a starting point, and the positions of the microphones correspond to the microphone holes 111 one by one.

It is understood that the distribution positions, the number and the sizes of the microphones on the circuit board 130 correspond to the microphone holes 111 one by one, and better collection of the sound signals can be achieved.

In some embodiments, the microphone may be mounted on a side of the circuit board 130 away from the microphone hole 111, and the circuit board 130 is provided with a second through hole (not shown) corresponding to the microphone hole 111.

The second through holes are through hole arrays, and the second through holes correspond to the microphones in position one to one.

The microphones may be mounted on a side of the circuit board 130 facing the cover plate 120, and the circuit board 130 may be provided with second through holes corresponding to the positions, types, numbers, and the like of the microphone holes 111.

The second through hole can ensure that the microphone can better collect sound signals.

In some embodiments, spring 140 is also included in the acoustic imaging sensor. The elastic member 140 is sandwiched between the circuit board 130 and the waterproof breathable film 150.

As shown in fig. 2 and 3, the waterproof breathable film 150 is located on the inner surface of the main housing 110, and the elastic member 140 may be located between the circuit board 130 and the waterproof breathable film 150.

The elastic member 140 is a waterproof sealing structure in the acoustic imaging sensor, and may be a material having elasticity, such as foam or rubber.

The elastic member 140 may be used for crash cushion to provide a certain cushion protection for the circuit board 130.

In some embodiments, the elastic member 140 may be foam, which is a material foamed by plastic particles, such as pearl foam or polypropylene plastic foam.

After the circuit board 130 and the main housing 110 are mounted, the height of the gap between the circuit board 130 and the main housing 110 is smaller than the original thickness of the elastic body, and the circuit board 130 and the main housing 110 will generate an axial pressing force on the elastic member 140, so that the elastic member 140 is in a compressed state.

The elastic member 140 can generate an axial force to press the waterproof and breathable membrane 150 against the inner surface of the main housing 110, which can further prevent external dust or liquid from entering the interior of the acoustic imaging sensor through the microphone hole 111.

In some embodiments, the elastic member 140 may be provided with a through hole corresponding to the camera 131, the camera 131 is in clearance fit with the through hole, and the camera 131 may pass through the through hole.

In some embodiments, the elastic member 140 may be provided with a first through hole (not shown) corresponding to the microphone hole 111.

The first through holes may be an array of through holes, and the first through holes may correspond to the microphone holes 111 one by one.

In some embodiments, the diameter of the first through hole may be the same as the diameter of the microphone hole 111, and may be designed according to the microphone signal on the circuit board 130.

It should be noted that the microphone hole 111 on the main housing 110, the first through hole on the elastic element 140, the second through hole on the circuit board 130, and the position, number, and size of the microphone on the circuit board 130 correspond to each other one by one, and a plurality of sound signal transmission channels can be formed.

The sound signal transmission channel can prevent sound signals transmitted between different microphone holes 111 from interfering with each other, and the sound signal transmission channel can keep the sound signals collected by the microphone as much as possible.

As shown in fig. 3, the sound signal can be collected by the microphone through the microphone hole 111, through the waterproof and breathable film 150, through the first through hole of the elastic member 140 and the second through hole of the circuit board 130.

In some embodiments, as shown in fig. 6 and 7, the side of the circuit board 130 facing the cover plate 120 may be provided with a plug 132.

Wherein, a connector may be located on a side of the circuit board 130 facing the cover plate 120, and the connector is used for connecting components between the circuit boards 130.

In some embodiments, as shown in fig. 6, the cover plate 120 may be provided with an avoiding hole 121, and the plug 132 may penetrate the avoiding hole 121.

The avoiding hole 121 is in clearance fit with the connector, and the connector 132 on the circuit board 130 can penetrate through the avoiding hole 121 to be connected with components between other circuit boards 130.

In some embodiments, as shown in fig. 6, the acoustic imaging sensor is provided with a second sealing ring 180 at the avoiding hole 121, and the second sealing ring 180 is sleeved outside the plug 132.

The second sealing ring 180 may be an elastic and resilient O-ring, such as a fluorine or silicone O-ring.

In some embodiments, as shown in fig. 7, a second sealing groove may be formed on the outer surface of the cover plate 120, and a portion of the second sealing ring 180 may be fixedly installed in the second sealing groove, and another portion may protrude from the second sealing groove.

The second seal groove may be used to fix the second seal ring 180.

The inner diameter of the second sealing ring 180 can be in interference fit with the plug connector 132, the second sealing ring 180 can be sleeved outside the plug connector 132, and the second sealing ring 180 can form a certain extrusion force on the plug connector 132, so that the inner side wall of the second sealing ring 180 is tightly extruded on the outer surface of the plug connector 132.

The second sealing ring 180 may be used to close a gap between the plug 132 and the avoiding hole 121, so as to prevent external dust or liquid from entering the interior of the acoustic imaging sensor through the avoiding hole 121 of the cover plate 120.

In some embodiments, the cover plate 120 may have a plurality of blind mounting holes 122, the blind mounting holes 122 surround the second sealing ring 180, and the blind mounting holes 122 may be used to mount the acoustic imaging sensor to the whole acoustic imager.

The blind mounting holes 122 are holes in the cover plate 120 that do not pass through.

The blind mounting holes 122 may be distributed around the outside of the second sealing ring 180, and the number and diameter of the blind mounting holes 122 may be set according to actual needs, and are not limited herein.

The acoustic imaging sensor can be mounted on the whole acoustic imager through the mounting blind hole 122, so that the acoustic imager is assembled.

In the related art, an acoustic imaging sensor in an acoustic imager does not have waterproof performance or has lower waterproof performance, namely IP51, and cannot meet severe working conditions.

According to the utility model, by adopting the multiple waterproof sealing structure comprising the waterproof breathable film 150, the first sealing ring 170, the second sealing ring 180, the waterproof glue and the elastic part 140, the acoustic imaging sensor can achieve better waterproof performance, so that the requirements of different working conditions are met.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An acoustic imaging sensor, comprising:

2. The acoustic imaging sensor of claim 1, further comprising:

the elastic piece, waterproof ventilated membrane sets up the internal surface of main casing body, the elastic piece centre gripping is in the circuit board with between the waterproof ventilated membrane.

3. The acoustic imaging sensor of claim 2, wherein the resilient member is foam.

4. The acoustic imaging sensor of claim 2, wherein the resilient member is provided with a first through hole corresponding to the microphone hole.

5. The acoustic imaging sensor of claim 1, wherein the microphone is mounted on a side of the circuit board facing away from the microphone hole, and a second through hole corresponding to the microphone hole is formed in the circuit board.

6. The acoustic imaging sensor of claim 1, wherein the waterproof transparent plate is adhered to the inner surface of the main housing by a waterproof glue.

7. The acoustic imaging sensor of claim 6, wherein the inner surface of the main housing has a flange surrounding and spaced from the camera aperture, the transparent waterproof panel bonded to the main housing and the flange.

8. The acoustic imaging sensor of claim 1, wherein at least one of the cover plate and the main housing has a first seal groove, and a portion of the first seal ring is mounted in the first seal groove and another portion of the first seal ring protrudes from the first seal groove.

9. The acoustic imaging sensor according to any of claims 1-8, wherein the cover plate has a recess, the circuit board has a plug connector on one side of the cover plate, the plug connector penetrates the recess, and a second sealing ring is disposed at the recess, the second sealing ring is disposed outside the plug connector.

10. The acoustic imaging sensor of claim 9, wherein the cover plate has a plurality of blind mounting holes, the blind mounting holes surrounding the second sealing ring, the blind mounting holes being configured to mount the acoustic imaging sensor to the whole acoustic imager.