CN206389498U - A kind of lightning protection microphone array sound pick-up - Google Patents
A kind of lightning protection microphone array sound pick-up Download PDFInfo
- Publication number
- CN206389498U CN206389498U CN201621403697.8U CN201621403697U CN206389498U CN 206389498 U CN206389498 U CN 206389498U CN 201621403697 U CN201621403697 U CN 201621403697U CN 206389498 U CN206389498 U CN 206389498U
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- China
- Prior art keywords
- sound pick
- lightning
- lightning protection
- circuit board
- sound
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The utility model discloses a kind of lightning protection microphone array sound pick-up, including housing, miaow head plate and circuit board, described circuit board and the connection of miaow head plate are installed in described housing；Lightning-protection module is installed, described lightning-protection module includes a piezo-resistance and a discharge tube on described circuit board, one end of described piezo-resistance and discharge tube series connection, other end ground connection；The sound pick-up is configured with the power supply adaptor of 4000V lightning protection and 20mv low ripples, and sound pick-up is fixed on ground by ground stud.Sound pick-up of the present utility model can be used under thunderstorm weather environment out of doors.
Description
Technical field
The utility model is related to a kind of integral type linear array sound pick-up, available for safety monitoring, peaceful community, public security department
The fields such as method.Specifically related to a kind of lightning protection microphone array sound pick-up
Background technology
Traditional security protection sound pick-up generally comprises an omnidirectional or the heart-shaped electret microphone pointed to, electret microphone
Realize that audio signal, to the conversion of electric signal, is then amplified, after low pass or bandpass filtering by one-level or two-stage analog circuit
Simulation output, as shown in Figure 1.
Also there are some sound pick-ups to include two electret microphones on the market, an electret microphone remolding sensitivity compared with
Height, is responsible for the pickup in free far field, and another electret microphone remolding sensitivity is relatively low, is responsible for picking up near field ambient noise
Sound, then controls phase by analog circuit, is superimposed to suppress ambient noise in the same direction.These pick up peace antiphone and there is following lack
Fall into：
(1) in actual applications, there is larger ambient noise in surrounding environment, can not be effective by the method for simulating noise reduction
Ground reduces the noise of whole frequency range, or even the HFS of sound is lost, and causes the signal quality of output not high.
(2) because the electret microphone fidelity of selection is relatively low, the phase delay that filter circuit is caused is added, output
There is difference with actual sound in voice signal.The requirement of security protection voice monitoring definition can not be met.
(3) pickup scope is smaller, depends entirely on the sensitivity of electret microphone, can only typically accomplish in the range of 10m
Pickup.Electret microphone can decay with the increase of use time, sensitivity and reduce pickup distance.Due to pickup scope
Limitation, sound pick-up is typically hung in overhead room centre position, and source of sound is pointed in pickup hole, close to key area.And camera
Overlay area is than larger, and installed in one jiao at the top of room, sound pick-up and camera are distant, connects up complex.
(4) function is relatively simple, only the pickup and amplification of audio, it is difficult to realize some specific function applications, example
Such as ambient noise suppression, Wave beam forming and beam direction.
(5) existing outdoor sound pick-up, is sealed around miaow head with simple AB glue, but the collection hole of miaow head in itself is to engrave
Empty, have no waterproof measure.Though it is hidden in housing, it is impossible to reach 100% waterproof effect.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of lightning protection microphone array sound pick-up so that sound pick-up is out of doors
It can be used under thunderstorm weather environment.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：A kind of lightning protection microphone array sound pick-up, bag
Include and miaow head plate and circuit board are installed in housing, described housing, described circuit board and the connection of miaow head plate；On described circuit board
Lightning-protection module is installed, described lightning-protection module includes a piezo-resistance and a discharge tube, the one of described piezo-resistance
End and discharge tube series connection, other end ground connection；The sound pick-up is configured with the power supply adaptor of 4000V lightning protection and 20mv low ripples, picks up
Sound device is fixed on ground by ground stud.
The beneficial effects of the utility model：Lightning-protection module, lightning protection power source of the sound pick-up of the present utility model by circuit board
Adapter and the triple lightning protection measures of ground stud, successfully manage thunder and lightning environment, greatly improve outdoor adaptability.In addition waterproof is passed through
Sound passing membrane, reaches the effect in thunderstorm weather water-proof sound-transmitting.
Brief description of the drawings
Fig. 1 is the circuit diagram of existing sound pick-up.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the sectional view of sound pick-up of the present utility model.
Fig. 4 is the top view of drain pan.
Fig. 5 is the structural representation of silica gel miaow headgear.
Embodiment
As shown in Figure 2-5, it is a kind of lightning protection microphone array sound pick-up of the present utility model, including housing 11, it is described
Miaow head plate 3 and circuit board 8 are installed, circuit board 8 and miaow head plate 3 are connected in housing；Lightning-protection module, lightning protection are installed on circuit board 8
Module includes a piezo-resistance 81 and a discharge tube 82, and one end of piezo-resistance 81 and discharge tube 82 are connected, another termination
Ground；The sound pick-up is configured with the power supply adaptor 9 of 4000V lightning protection and 20mv low ripples, and sound pick-up is fixed on by ground stud 10
Ground.
Lightning protection circuit, power supply adaptor lightning protection and ground stud, three kinds of lightning protection measures are applied simultaneously, successfully manage thunder and lightning ring
Border, greatly improves outdoor adaptability.
8 linearly aligned omnidirectional miaows first 2, miaow head are equidistantly welded with miaow head plate 3 of the present utility model successively
Plate 3 is screwed on drain pan, and the inner surface setting of drain pan 1 has the acoustically transparent area 4 of rectangle, and the linear arrangement of acoustically transparent area 4 has 8
Individual penetrable sound hole 5 corresponding with miaow head；Penetrable sound hole 5 is in horn-like, and the aperture on the outer surface of drain pan 1 is more than on drain pan inner surface
Aperture；Acoustically transparent area 5 is additionally provided with waterproof sound passing membrane 6, and 8 penetrable sound holes are completely covered the waterproof sound passing membrane 6；Sound pick-up also includes
There is silica gel miaow headgear 7；Be provided with 8 bodies matched with miaow head 71 on described silica gel miaow headgear 7, silica gel miaow headgear 7 with
Miaow first 2, miaow head plate 3, drain pan 1 are brought into close contact.Penetrable sound hole is in horn-like, and outer imperial palace is small, effectively by the incoming miaow head of sound, choosing
The waterproof sound passing membrane of suitable classification of waterproof is selected, while waterproof, the decay to sound pick-up pickup effect, miaow is effectively reduced
Headgear makes sound pick-up reach more preferable signal acquisition effect.
The size of waterproof sound passing membrane of the present utility model is adapted with the size in acoustically transparent area, the waterproof rank of waterproof sound passing membrane
Reach IP67；Silica gel miaow headgear 7 includes being provided with set on the silica gel bottom plate 72 adaptable with the size in acoustically transparent area, the silica gel bottom plate
Body 71, the bottom opening of body 71, the body 71 is including the cylinder 73 consistent with bottom opening diameter and is arranged at the top of cylinder 73
Lid 74, be provided with circular hole 75 on described lid 74.The silica gel miaow headgear can with miaow head plate, miaow head in itself and surrounding,
Drain pan is brought into close contact, effectively prevent sound from penetrable sound hole come in after in housing roundtrip.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the design of the present invention
It is defined with scope, on the premise of design concept of the present invention is not departed from, ordinary skill technical staff is to this hair in this area
The all variations and modifications that bright technical scheme is made all should fall into protection scope of the present invention, and of the invention is claimed
Technology contents, are all documented in technical requirements book.
Claims (1)
1. a kind of lightning protection microphone array sound pick-up, including housing, it is characterised in that：Miaow head plate and electricity are installed in described housing
Road plate, described circuit board and the connection of miaow head plate；Lightning-protection module is installed, described lightning-protection module includes on described circuit board
One piezo-resistance and a discharge tube, one end of described piezo-resistance and discharge tube series connection, other end ground connection；The sound pick-up
The power supply adaptor of 4000V lightning protection and 20mv low ripples is configured with, sound pick-up is fixed on ground by ground stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621403697.8U CN206389498U (en) | 2016-12-21 | 2016-12-21 | A kind of lightning protection microphone array sound pick-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621403697.8U CN206389498U (en) | 2016-12-21 | 2016-12-21 | A kind of lightning protection microphone array sound pick-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206389498U true CN206389498U (en) | 2017-08-08 |
Family
ID=59489511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621403697.8U Expired - Fee Related CN206389498U (en) | 2016-12-21 | 2016-12-21 | A kind of lightning protection microphone array sound pick-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206389498U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241664A (en) * | 2017-08-09 | 2017-10-10 | 深圳北鱼信息科技有限公司 | A kind of microphone assembly |
| CN112014681A (en) * | 2020-08-05 | 2020-12-01 | 深圳供电局有限公司 | Ground pickup device for fault location of high-voltage cable |
-
2016
- 2016-12-21 CN CN201621403697.8U patent/CN206389498U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241664A (en) * | 2017-08-09 | 2017-10-10 | 深圳北鱼信息科技有限公司 | A kind of microphone assembly |
| CN112014681A (en) * | 2020-08-05 | 2020-12-01 | 深圳供电局有限公司 | Ground pickup device for fault location of high-voltage cable |
| CN112014681B (en) * | 2020-08-05 | 2023-08-11 | 深圳供电局有限公司 | Ground pickup device for positioning high-voltage cable faults |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170808 Termination date: 20191221 |