Hydrophone based on bone voiceprint sensor structure

Abstract

The utility model discloses a hydrophone based on a bone voiceprint sensor structure, and belongs to the technical field of hydrophones. According to the hydrophone, the metal shell of the bone voiceprint sensor is removed to obtain the bone voiceprint sensor body, so that the sensitivity of the bone voiceprint sensor body is ensured, and underwater acoustic signals can be picked up more accurately; meanwhile, the hydrophone carries out vulcanization packaging on the bone voiceprint sensor body, thereby realizing waterproof treatment, and ensuring that the signal, the power supply and the ground are not short-circuited through water. In addition, a hole blocking piece is arranged on the pressure relief hole of the bone voiceprint sensor body, so that glue is prevented from entering the interior of the bone voiceprint sensor body through the pressure relief hole during vulcanization packaging and adhering to the capacitive MEMS, and the capacitive MEMS cannot generate signals. The hydrophone is simple in structure, low in manufacturing difficulty and low in material price, and the cost of the hydrophone can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrophones, and specifically relates to a hydrophone based on the structure of a bone voiceprint sensor. Background Art

[0002] A hydrophone is a transducer that converts acoustic signals into electrical signals, used to receive acoustic signals in water, and is also often referred to as a receiving transducer. Hydrophones are widely used in underwater communication, detection, target positioning, tracking, biometric identification, etc., and are the core components for marine environment detection and marine resource development.

[0003] Currently, the hydrophones on the market are expensive, often costing thousands of yuan or even tens of thousands of yuan, which seriously affects the popularization and application of hydrophones. The main reason for the high price of hydrophones is that the sensitive components and preamplifier circuits used are expensive. However, due to the low maturity of the sensitive components made of ALN material and PZT material, the cost cannot be greatly reduced. At the same time, in the existing technology, the manufacturing process of hydrophones is complex and the assembly difficulty is high, which is not conducive to research and development and production.

[0004] At present, capacitive MEMS has been very mature after years of development. Capacitive MEMS paired with a dedicated ASIC chip can achieve the pickup of sound signals. Its price is low, and the selling price is only a few yuan, and it has been widely used in microphones and bone voiceprint sensors.

[0005] Therefore, a new type of hydrophone needs to be proposed to solve the above technical problems existing in the prior art by using a bone voiceprint sensor. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a hydrophone based on the structure of a bone voiceprint sensor. Based on the traditional bone voiceprint sensor, by improving its structure and setting a vulcanized encapsulation layer, a hydrophone is made. Its structure is simple, aiming to achieve the purpose of reducing costs and simplifying the assembly process.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A hydrophone based on the structure of a bone voiceprint sensor includes a bone voiceprint sensor body, a bone voiceprint sensor carrier board, a hole plugging member, a cable, and a vulcanized encapsulation layer;

[0009] Among them, the bone voiceprint sensor body is obtained by removing the metal shell from the bone voiceprint sensor;

[0010] Both the bone voiceprint sensor body and the bone voiceprint sensor carrier board are placed inside the vulcanized encapsulation layer;

[0011] The bone voiceprint sensor body is fixed on the bone voiceprint sensor carrier board, and the bone voiceprint sensor carrier board is used to connect the power supply to the bone voiceprint sensor body and transmit the signal of the bone voiceprint sensor body;

[0012] The plugging component is arranged on the pressure relief hole of the bone voiceprint sensor body and blocks the pressure relief hole;

[0013] The cable is located outside the vulcanized encapsulation layer, and one end of the cable extends into the vulcanized encapsulation layer and is connected to the bone voiceprint sensor carrier board; the cable is used to transmit signals and connect to the power supply.

[0014] Preferably, the bone voiceprint sensor carrier board is a circuit board made of FR4 material.

[0015] Preferably, the fixing method of the bone voiceprint sensor body and the bone voiceprint sensor carrier board is welding.

[0016] Preferably, the cable is a three-core cable, a four-core cable, a five-core cable or a six-core cable.

[0017] Preferably, the vulcanized encapsulation layer is made by vulcanizing polyurethane glue.

[0018] Preferably, the outer shape of the vulcanized encapsulation layer is shaped by a vulcanization mold.

[0019] Preferably, the outer shape of the vulcanized encapsulation layer is cylindrical, spherical or square.

[0020] Preferably, the plugging component is a plugging tape.

[0021] Compared with the prior art, the present utility model has the following beneficial effects:

[0022] As described above, the present utility model relates to a hydrophone based on the structure of a bone voiceprint sensor. The metal shell of the bone voiceprint sensor is removed to obtain the bone voiceprint sensor body, which ensures the sensitivity of the bone voiceprint sensor body and can pick up underwater acoustic signals more accurately; at the same time, the hydrophone vulcanizes and encapsulates the bone voiceprint sensor body to achieve waterproof treatment, ensuring that there is no short circuit between the signal, power supply and ground through water. The present utility model also sets a plugging component on the pressure relief hole of the bone voiceprint sensor body to prevent the glue from entering the inside of the bone voiceprint sensor body through the pressure relief hole during vulcanization and encapsulation and sticking to the capacitive MEMS, resulting in the capacitive MEMS being unable to generate signals. The structure of the present utility model is simple and the manufacturing difficulty is low. The product can be manufactured only in five steps; moreover, only five types of materials are required, and the materials used are cheap, which can greatly reduce the cost of the hydrophone. Description of the Drawings

[0023] Figure 1It is a schematic structural diagram of a hydrophone based on the structure of a bone voiceprint sensor in Embodiment 1 of the present utility model.

[0024] In the figure: 1 - Bone voiceprint sensor body, 2 - Bone voiceprint sensor carrier board, 3 - Hole plugging member, 4 - Cable, 5 - Vulcanized encapsulation layer. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] Embodiment 1

[0032] As shown Figure 1 in the figure, this embodiment describes a hydrophone based on the structure of a bone voiceprint sensor, which includes a bone voiceprint sensor body 1, a bone voiceprint sensor carrier board 2, a hole plugging member 3, a cable 4, and a vulcanized encapsulation layer 5.

[0033] Among them, the bone voiceprint sensor body 1 is obtained by removing the metal shell of the bone voiceprint sensor, and the diaphragm assembly is exposed outside the bone voiceprint sensor body 1. The capacitive MEMS and ASIC chips are inside the bone voiceprint sensor body 1, and the bone voiceprint sensor body 1 outputs an analog signal.

[0034] Both the bone voiceprint sensor body 1 and the bone voiceprint sensor carrier board 2 are arranged inside the vulcanized encapsulation layer 5. The bone voiceprint sensor body 1 is first pasted onto the bone voiceprint sensor carrier board 2, and then reflow soldered to fix the bone voiceprint sensor body 1 in the middle of the bone voiceprint sensor carrier board 2.

[0035] The bone voiceprint sensor carrier board 2 is a circuit board made of FR4 material. In addition to fixing the bone voiceprint sensor body 1, it is also used to transmit the signal of the bone voiceprint sensor body 1 and connect the power supply to the bone voiceprint sensor body 1.

[0036] There are also pressure relief holes on the diaphragm of the bone voiceprint sensor body 1, and a hole plugging member 3 is pasted on the pressure relief holes. The hole plugging member 3 is a hole plugging tape, and its function is to block the pressure relief holes to prevent the polyurethane vulcanized glue from entering the inside of the bone voiceprint sensor body 1 through the pressure relief holes and sticking to the capacitive MEMS, resulting in the capacitive MEMS being unable to generate signals.

[0037] The cable 4 is located outside the vulcanized encapsulation layer 5, and one end of the cable 4 extends into the vulcanized encapsulation layer 5 and is welded to the bone voiceprint sensor carrier board 2 through a lead. The cable 4 can provide power to the bone voiceprint sensor body 1 through the bone voiceprint sensor carrier board 2, and can also transmit the signal output by the bone voiceprint sensor body 1. The cable 4 uses a three-core cable or a four-core cable.

[0038] The vulcanized encapsulation layer 5 in this embodiment is a polyurethane shell made by vulcanizing polyurethane glue. The shape of the polyurethane shell is cylindrical, and its shape is formed by a special vulcanization mold.

[0039] The manufacturing process of the hydrophone in this embodiment is briefly described as follows:

[0040] The first step is to remove the metal shell of the bone voiceprint sensor to obtain the bone voiceprint sensor body 1;

[0041] The second step is to paste the bone voiceprint sensor body 1 onto the bone voiceprint sensor carrier board 2 and perform reflow soldering;

[0042] The third step is to paste the hole plugging tape on the pressure relief holes;

[0043] Step 4: Weld the cable 4 to the bone voiceprint sensor carrier board 2 through a lead wire.

[0044] Step 5: Prepare polyurethane glue and inject it into the vulcanization mold. Then slowly insert the semi-finished product completed in Step 4 into the polyurethane glue, and finally place it in an incubator for constant-temperature vulcanization. After vulcanization is completed, take it out.

[0045] The hydrophone based on the bone voiceprint sensor structure described in this embodiment removes the metal shell of the bone voiceprint sensor to obtain the bone voiceprint sensor body 1, which ensures the sensitivity of the bone voiceprint sensor body 1 and can pick up underwater acoustic signals more accurately. At the same time, the hydrophone vulcanizes and encapsulates the bone voiceprint sensor body 1 to achieve waterproof treatment, ensuring that there is no short circuit through water between the signal, power supply, and ground. Also, by pasting a hole-blocking tape on the pressure relief hole, the normal output of the signal is guaranteed. This utility model only requires five types of materials, with low manufacturing difficulty, and the materials used are inexpensive, which can greatly reduce the cost of the hydrophone.

[0046] Embodiment 2

[0047] This Embodiment 2 also describes a hydrophone based on the bone voiceprint sensor structure. Except for the following technical features being different from those in Embodiment 1 above, the rest of the technical features can refer to Embodiment 1 above.

[0048] The cable 4 used in the hydrophone in this embodiment is a five-core cable or a six-core cable, and the outer shape of the hydrophone vulcanized encapsulation layer 5 is spherical.

[0049] Of course, the outer shape of the hydrophone vulcanized encapsulation layer 5 is not limited to the above-mentioned spherical shape and can be other shapes according to requirements.

[0050] The embodiments of the present utility model are only used to illustrate the technical solutions of the present utility model and not to limit them. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hydrophone based on the structure of a bone voiceprint sensor, characterized in that: It includes a bone voiceprint sensor body, a bone voiceprint sensor carrier board, a hole plugging component, a cable, and a vulcanized encapsulation layer; Among them, the bone voiceprint sensor body is obtained by removing the metal shell from the bone voiceprint sensor; Both the bone voiceprint sensor body and the bone voiceprint sensor carrier board are placed inside the vulcanized encapsulation layer; The bone voiceprint sensor body is fixed on the bone voiceprint sensor carrier board, and the bone voiceprint sensor carrier board is used to connect the power supply to the bone voiceprint sensor body and transmit the signal of the bone voiceprint sensor body; The hole plugging component is arranged on the pressure relief hole of the bone voiceprint sensor body and plugs the pressure relief hole; The cable is located outside the vulcanized encapsulation layer, and one end of the cable extends into the vulcanized encapsulation layer and is connected to the bone voiceprint sensor carrier board; the cable is used to transmit signals and connect to the power supply.

2. The hydrophone based on the bone voiceprint sensor structure according to claim 1, characterized in that: The bone voiceprint sensor carrier board is a circuit board made of FR4 material.

3. A hydrophone based on the structure of a bone voiceprint sensor according to claim 1, characterized in that: The fixing method of the bone voiceprint sensor body and the bone voiceprint sensor carrier board is welding.

4. A hydrophone based on the structure of a bone voiceprint sensor according to claim 1, characterized in that: The cable is a three-core cable, a four-core cable, a five-core cable, or a six-core cable.

5. A hydrophone based on the structure of a bone voiceprint sensor according to claim 1, characterized in that: The vulcanized encapsulation layer is made by vulcanizing polyurethane glue.

6. The hydrophone based on the bone voiceprint sensor structure according to claim 5, wherein: The outer shape of the vulcanized encapsulation layer is shaped by a vulcanization mold.

7. A hydrophone based on the bone voiceprint sensor structure according to claim 6, characterized in that: The outer shape of the vulcanized encapsulation layer is cylindrical, spherical, or square.

8. A hydrophone based on the structure of a bone voiceprint sensor according to claim 1, characterized in that: The hole plugging component is a hole plugging tape.

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