CN218103409U - Microphone and microphone module of anti radiation interference - Google Patents
Microphone and microphone module of anti radiation interference Download PDFInfo
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- CN218103409U CN218103409U CN202221698837.4U CN202221698837U CN218103409U CN 218103409 U CN218103409 U CN 218103409U CN 202221698837 U CN202221698837 U CN 202221698837U CN 218103409 U CN218103409 U CN 218103409U
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Abstract
The utility model discloses a microphone of anti radiation interference, including shell, miaow head, PCB board are installed in the shell respectively, electrical property is connected between miaow head and the PCB board, the miaow head has a miaow head shell, miaow head shell is made by platinum-copper alloy material, the miaow head shell has seted up the sound inlet hole, the shell sound inlet hole has been seted up to the both sides of shell, the shell is made for the lead material; above-mentioned anti-radiation interference's microphone sets up through the cooperation of lead material shell and platinum copper alloy miaow head shell, and platinum copper alloy miaow head shell is good except that electric conductive property, hardness are good, still better anti-radiation performance, simultaneously, adopts the lead material shell with miaow head parcel inside, the best anti-radiation performance of performance lead metal, further strengthens microphone miaow head anti-radiation performance.
Description
Technical Field
The utility model relates to a technical field of microphone specifically is a radiation-resistant interference's microphone and miaow head module.
Background
The microphone, known as a microphone, is translated from an english microphone (microphone), and is also called a microphone or a microphone. A microphone is an energy conversion device that converts a sound signal into an electrical signal. The sensitivity of an electret microphone is positively correlated with the intensity of surface charges on a diaphragm inside the electret microphone. After the ions generated by the rays enter the microphone, the ions can ionize the surface charges on the electret diaphragm of the electret microphone, so that the charges are attenuated, the surface charges on the diaphragm are compounded, and the sensitivity and the day of the electret microphone are reduced in the past, so that the microphone finally fails. In addition, the radiation is also a strong electromagnetic interference, and the acoustic wave signal of the microphone is also interfered. Therefore, the electret microphone in the acoustic wave detection device, the monitoring device, the noise decibel meter and other instruments and devices related to acoustic wave collection in the radiation environment has reduced sensitivity due to the "invasion" of the radiation, so that the electret microphone cannot be used for a long time in the radiation environment.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need for a microphone and a microphone module that are resistant to radiation interference and can be used in a radiation environment for a long time.
The utility model provides an anti radiation interference's microphone, includes shell, miaow head, PCB board are the ann shell respectively, electrical property connection between miaow head and the PCB board, the miaow head has the miaow head shell, the miaow head shell is made by platinum-copper alloy material, the hole of entrying has been seted up on the miaow head shell, the shell hole of entrying has been seted up to the both sides of shell, the shell is made for the lead material.
In one embodiment, the thickness of the housing is 3mm.
In one embodiment, there are two lead-out lines on the PCB board.
In one embodiment, the side of the housing has a U-shaped cross-section.
The utility model provides a microphone module of radioresistance microphone, the microphone module includes the miaow head unit, resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, inductance L1, the signal output part of miaow head unit is connected with resistance R1, resistance R2's one end respectively, the other end of resistance R1 is connected with electric capacity C3 and inductance L1's one end respectively, inductance L1's the other end is connected with electric capacity C4's one end, electric capacity C1's one end and the public connection point between miaow head unit and resistance R1 are connected, electric capacity C1's the other end is connected with resistance R4 and electric capacity C5's one end respectively, resistance R4's the other end is connected with electric capacity C7's one end, electric capacity C2's one end and the public connection point between miaow head unit and resistance R2 are connected, electric capacity C2's the other end is connected with resistance R3 and electric capacity C6's one end respectively.
In one embodiment, the microphone unit is a high-gain microphone unit with an IC model of RF2324IC.
Above-mentioned anti radiation interference's microphone, cooperation through lead material shell and platinum-copper alloy miaow head shell sets up, platinum-copper alloy miaow head shell is except that electric conductive property is good, hardness is good, better anti radiation performance still, simultaneously, adopt lead material shell with the miaow head parcel in inside, the best anti radiation performance of performance lead metal, further strengthen microphone miaow head anti radiation performance, and, this application adopts the mode of side income sound, it directly throws on the miaow head from lead material shell front to have avoided the radiation ray, microphone miaow head anti radiation performance has been increased more effectively, make the microphone can not lead to sensitivity to descend because of the "invasion" of ray, make can use for a long time in the ray radiation environment microphone, the cost is practiced thrift effectively.
Drawings
Fig. 1 is a schematic cross-sectional structural diagram of a microphone for resisting radiation interference according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a microphone module of the microphone of fig. 1 according to another embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected to" another element, there are no intervening elements present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the microphone with anti-radiation interference includes a housing 100, a microphone 200, and a PCB 300, wherein the microphone 200 and the PCB 300 are respectively installed in the housing 100, the microphone 200 and the PCB 300 are electrically connected to each other, the microphone 200 has a microphone housing 210, the microphone housing 210 is made of a platinum-copper alloy material, the microphone housing 210 is provided with a sound inlet 220, two sides of the housing 100 are provided with housing sound inlets 110, and the housing 100 is made of a lead material.
In one embodiment, the thickness of the housing 100 is 3mm.
In one embodiment, there are two pinouts 400 on the PCB board 300.
In one embodiment, the side of the housing 100 has a U-shaped cross-section.
As shown in fig. 2, a microphone module of a microphone for resisting radiation interference includes a microphone unit, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, and an inductor L1, wherein a signal output end of the microphone unit is connected to one ends of the resistor R1 and the resistor R2, the other end of the resistor R1 is connected to one ends of the capacitor C3 and the inductor L1, the other end of the inductor L1 is connected to one end of the capacitor C4, one end of the capacitor C1 is connected to a common connection point between the microphone unit and the resistor R1, the other end of the capacitor C1 is connected to one ends of the resistor R4 and the capacitor C5, the other end of the resistor R4 is connected to one end of the capacitor C7, one end of the capacitor C2 is connected to a common connection point between the microphone unit and the resistor R2, the other end of the capacitor R3 is connected to one end of the capacitor C6, and the other end of the capacitor R8 are connected to one end of the capacitor C8.
In one embodiment, the microphone unit is a high-gain microphone unit with an IC model of RF2324IC.
Rays generally easily pass through materials with low atomic numbers and low structural densities; the ray 'invasion' path to the microphone is mainly to penetrate the aluminum shell made of low-density material and the glass fiber PCB board 2 to enter the interior of the microphone; conventional electret microphones typically have a housing of aluminum with an atomic number of 13 and a very low density. The fiberglass board PCB is an insulating material, so that radiation easily enters the interior of the electret microphone.
The traditional microphone shell is made of aluminum material, so that the radiation resistance is poor; although lead has good radiation resistance, the lead has poor hardness and conductivity and cannot be directly used for the microphone shell, so that the platinum-copper alloy with good conductivity, good hardness and good radiation resistance is adopted as the shell of the microphone head 200;
the microphone head 200 is wrapped inside by the lead-clad shell 100, so that the optimal radiation resistance of lead metal is exerted, and the radiation resistance of the microphone head is further enhanced.
The sound inlet hole is the weak link of antiradiation, and the sound inlet hole of shell and the sound inlet hole of miaow head directly correspond the setting generally, and this application adopts the side sound mode of going into, sets up 2 shell sound inlet holes 110 in the side of shell 100, can effectively avoid radiation ray to lead to the membrane charge decay from positive direct projection on the electric charge vibrating diaphragm.
The lead material shell 100 is a U-shaped structure with the thickness of 3mm formed by die casting, the microphone 200 is arranged in the U-shaped groove, and then the lead upper cover is covered, so that the totally-enclosed lead-coated shell is formed.
When the microphone with the radiation interference resistance is used, after external sound enters the microphone through the 2 first shell sound inlet holes 110 formed in the side face of the shell 100 and enters the microphone 200 through the sound inlet hole 220 formed in the microphone shell 210, sound signals are converted into electric signals by the microphone 200, the electric signals are output to an amplifier through the two outgoing lines 400, the electric signals are amplified and then output to a player or a sound card, and the signals are processed, recorded and stored, so that the sound pickup function of the microphone is realized.
Like this, anti radiation interference's microphone, through the cooperation setting of lead material shell 100 and platinum-copper alloy miaow head shell 210, platinum-copper alloy miaow head shell 210 is except that electric conductive property is good, the hardness is good, better radiation resistance is still in addition, simultaneously, adopt lead material shell with the miaow head parcel inside, the best radiation resistance of performance lead metal, further strengthen microphone miaow head radiation resistance, moreover, this application adopts the mode of side income sound, avoided radiation ray to directly throw on the miaow head from lead material shell openly, the microphone miaow head radiation resistance has been increased more effectively, make the microphone can not lead to the sensitivity to descend because of the "invasion" of ray, make the microphone can use for a long time in the ray radiation environment, the cost has been practiced thrift effectively.
Further, the radiation itself is an electromagnetic wave of very high frequency, for example, X-rays of frequency 10 17 Hz, such extremely high frequencies must cause interference with the microphone, which causes distortion interference noise when passing through the wires of the microphone into the non-linear elements inside the microphone head 200.
In order to solve the above problems, in the present application, in addition to the above metal shield, a high gain microphone head unit is simultaneously adopted on a circuit, in addition to the above microphone head housing made of platinum-copper alloy instead of aluminum material, the internal IC adopts a high-grade RF2324IC, a high frequency filter is integrated in the IC itself, and then a pi-type filter composed of an inductor L1, a capacitor C3 and a capacitor C4, and a capacitor multi-point filter of a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8 are integrated in the IC. Noise interference in the output signal is minimized. This is a typical differential output circuit, which has the function of suppressing noise, and takes the filtering of the very high frequency interference as the basic consideration, so as to more effectively filter the electromagnetic interference caused by the radiation.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A microphone that is resistant to radiated interference, characterized by: including shell, miaow head, PCB board are the ann shell respectively, electrical property connection between miaow head and the PCB board, the miaow head has the miaow head shell, the miaow head shell is made by platinum-copper alloy material, the hole of entrying has been seted up on the miaow head shell, the shell hole of entrying has been seted up to the both sides of shell, the shell is made for plumbous material.
2. The microphone of claim 1, wherein the microphone is resistant to radiation interference, and wherein: the thickness of the shell is 3mm.
3. The microphone of claim 1, wherein the microphone is resistant to radiation interference, and wherein: and two outgoing lines are arranged on the PCB.
4. The microphone of claim 1, wherein the microphone is resistant to radiation interference, and wherein: the cross section of the side surface of the shell is of a U-shaped structure.
5. The microphone of claim 1, wherein the microphone is resistant to radiation interference, and wherein: the microphone module comprises a microphone unit, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and an inductor L1, the signal output end of the microphone unit is respectively connected with the resistor R1, one end of the resistor R2 is connected with one end of the resistor R1, the other end of the resistor R1 is respectively connected with one ends of the capacitor C3 and the inductor L1, the other end of the inductor L1 is connected with one end of the capacitor C4, one end of the capacitor C1 is connected with a common connection point between the microphone unit and the resistor R1, the other end of the capacitor C1 is respectively connected with one ends of the resistor R4 and the capacitor C5, the other end of the resistor R4 is connected with one end of the capacitor C7, one end of the capacitor C2 is connected with a common connection point between the microphone unit and the resistor R2, the other end of the capacitor C2 is respectively connected with one ends of the resistor R3 and the capacitor C6, and the other end of the capacitor C8 are connected.
6. The microphone of claim 5, wherein the microphone is resistant to radiation interference, and wherein: the microphone unit is a high-gain microphone unit, and the IC model of the high-gain microphone unit is RF2324IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221698837.4U CN218103409U (en) | 2022-07-04 | 2022-07-04 | Microphone and microphone module of anti radiation interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221698837.4U CN218103409U (en) | 2022-07-04 | 2022-07-04 | Microphone and microphone module of anti radiation interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218103409U true CN218103409U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221698837.4U Active CN218103409U (en) | 2022-07-04 | 2022-07-04 | Microphone and microphone module of anti radiation interference |
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| Country | Link |
|---|---|
| CN (1) | CN218103409U (en) |
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2022
- 2022-07-04 CN CN202221698837.4U patent/CN218103409U/en active Active
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