CN205812390U - A kind of vehicle-mounted laser mike - Google Patents
A kind of vehicle-mounted laser mike Download PDFInfo
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- CN205812390U CN205812390U CN201620500260.XU CN201620500260U CN205812390U CN 205812390 U CN205812390 U CN 205812390U CN 201620500260 U CN201620500260 U CN 201620500260U CN 205812390 U CN205812390 U CN 205812390U
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- laser
- detection module
- mike
- vehicle
- signal processor
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Abstract
This utility model provides a kind of vehicle-mounted laser mike, relate to mike technique field, this vehicle-mounted laser mike, including: location reference laser vibration detection module, laser vibrometer detection module array, signal processor and mike, wherein, location reference laser vibration detection module and laser vibrometer detection module array electrically connect with signal processor respectively, and mike electrically connects with signal processor；Location reference laser vibration detection module includes a laser beam emitting device and a laser receiver；Laser vibrometer detection module array includes organizing laser vibrometer detection module more, often includes in group laser vibrometer detection module that in a laser beam emitting device and a laser receiver, and laser vibrometer detection module, the quantity of laser vibrometer detection module is even number respectively.Its simple in construction, it is not necessary to use complicated DSP technology, just make this vehicle-mounted laser mike possess high directionality.
Description
Technical field
This utility model relates to mike technique field, particularly relates to a kind of vehicle-mounted laser mike.
Background technology
At present, utilize laser technology to carry out vibration detection, be applied in the application of sound collection, it is possible to be big
The big electromagnetic interference capability improving mike and the directionality of collection sound, therefore receive significant attention.
In the prior art, the most all use the rear side at conventional microphone vibration film, increase by one group and swash
Light emission and the passive type sound collection mode of reception device.In this process, the sound that sound source produces
The vibration of shuttle belt reflective membrane or drive comprise the optical pickocff vibration of substrate and vibration film, to change
The physical parameter of reflection laser, then the physics launched between laser and reflection laser arrived by computation and measurement
Parameter differences, such as light intensity difference change or Doppler frequency deviation etc., thus calculates the sound letter on vibration sound film
Breath.
Based on foregoing description it can be seen that prior art typically all uses single laser irradiate sound source surface
Or the mode of vibration sound film realizes purpose, in implementation process, the requirement to laser-bounce face is higher, needs
Use special mirror surface or optical pickocff, greatly limit application scenarios.
Utility model content
For the problems referred to above, this utility model aims to provide a kind of vehicle-mounted laser mike, efficiently solves
The problem needing the special laser-bounce face of precise deployment in existing vehicle-mounted laser mike.
The technical scheme that this utility model provides is as follows:
A kind of vehicle-mounted laser mike, including:
Location reference laser vibration detection module, laser vibrometer detection module array, signal processor, with
And mike, wherein, described location reference laser vibration detection module and described laser vibrometer detection module
Array electrically connects with described signal processor respectively, and described mike electrically connects with described signal processor；
Described location reference laser vibration detection module includes that the first laser beam emitting device and the first laser connect
Receiving apparatus；
Described laser vibrometer detection module array includes organizing laser vibrometer detection module more, often organizes described sharp
Light vibration detection module includes the second laser beam emitting device and the second laser receiver respectively, and described
Described in laser vibrometer detection module array, the quantity of laser vibrometer detection module is even number.
It is further preferred that described vehicle-mounted laser mike also includes an electro-motor, described electronic horse
Reach and detect mould with described signal processor, location reference laser vibration detection module and laser vibrometer respectively
Group pattern electrically connects.
It is further preferred that described vehicle-mounted laser mike also includes a MEMS system, described MEMS
System detects with described signal processor, location reference laser vibration detection module and laser vibrometer respectively
Module array electrically connects.
It is further preferred that described vehicle-mounted laser mike also includes face identification system, described face
Identification system is connected with described electro-motor, and described face identification system is connected with signal processor.
It is further preferred that described vehicle-mounted laser mike also includes face identification system, described face
Identification system is connected with MEMS system, and described face identification system is connected with signal processor.
It is further preferred that described face identification system includes photographic head and the microcontroller being electrically connected to each other
Device.
The vehicle-mounted laser mike that this utility model provides, it is possible to bring following beneficial effect:
Location reference laser vibration detection module is set in the vehicle-mounted laser mike that this utility model provides
Detect module array with laser vibrometer, use this vehicle-mounted laser mike to need not during gathering sound
Dispose special laser-bounce face, efficiently solve in prior art to improve laser vibrometer detecting distance
Need the problem in the special laser-bounce face of precise deployment and in the situation that cannot dispose special laser emitting surface
Under, problem that laser vibrometer detecting distance cannot be improved.
It addition, the vehicle-mounted laser microphone structure that this utility model provides is simple, it is not necessary to use complexity
DSP technology, just makes this vehicle-mounted laser mike possess high directionality (when electromagnetic wave points to certain
The when of sound source, laser receiver can only gather the sound on this electromagnetic wave direction, significantly
Eliminate the environment noise impact on sound object, ensure accurately adopting of more remote sound with this
Collection), high sensitivity, the advantage such as anti-electromagnetic interference, solve the highly directional band of existing laser microphone
The vibration telemeter distance the come shortcoming such as not, and it combines traditional mike and is able at automotive interior
Dispose and implement.
Accompanying drawing explanation
Below by the way of the most understandable, accompanying drawings preferred implementation, to above-mentioned characteristic,
Technical characteristic, advantage and implementation thereof are further described.
Fig. 1 is vehicle-mounted laser mike one embodiment structural representation in this utility model；
Fig. 2 is vehicle-mounted laser mike another embodiment structural representation in this utility model；
Fig. 3 is vehicle-mounted laser mike another embodiment structural representation in this utility model.
Reference:
100-vehicle-mounted laser mike, 110-positions reference laser vibration detection module, 120-laser vibrometer
Detection module array, 130-signal processor, 140-mike, 150-electro-motor, 160-face is known
Other system.
Detailed description of the invention
100 1 kinds of embodiment structural representations of vehicle-mounted laser mike that Fig. 1 provides for this utility model,
It can be seen that include positioning reference laser vibration inspection in this vehicle positioning laser microphone 100
Survey module 110, laser vibrometer detection module array 120, signal processor 130 and mike 140,
Wherein, location reference laser vibration detection module and laser vibrometer detection module array respectively with signal processing
Device electrically connects, and mike electrically connects with signal processor.This mike generally uses shotgun microphone, also
Omnidirectional microphone can be used, for recording the whole abundant various acoustical vibration details in driver's cabin,
Select as the case may be.
Specifically, location reference laser vibration detection module includes the first laser beam emitting device and the second laser
Receive device；Laser vibrometer detection module array includes organizing laser vibrometer detection module more, often organizes laser
Vibration detection module includes the second laser beam emitting device and the second laser receiver respectively, and laser shakes
In dynamic detection module, the quantity of laser vibrometer detection module is even number, e.g., including 2 groups, 4 groups, even more
Many, in actual applications depending on the distance according to sound to be detected, if sound to be detected is farther out, can fit
Work as increase, if detection sound is relatively near, can suitably reduce.In a specific embodiment, at automobile
In application scenarios, generally having only to detect the speech data of driver, the distance of detection is location reference
Laser vibrometer detection module and laser vibrometer detect the distance of module array module and driver head, generally
Within 1 meter, now, laser vibrometer detection module array arranges two groups of laser vibrometer detection modules
Purpose can be realized.
It addition, location reference laser vibration detection module and laser vibrometer detect the first laser in module array
The transmitting direction of the generating laser in discharger and the second laser beam emitting device is consistent, and focus is simultaneously
Fall within the restriction region outside certain distance.In a specific embodiment, in the application scenarios of automobile,
The focus of the emitter group of laser falls within the facial zone of driver, the i.e. vibration area of driver's sounding.
In the course of the work, location reference laser vibration detection module and laser vibrometer detection module array divide
(such as light intensity, Doppler is inclined with the physical parameter difference reflecting laser Tong Guo not to detect contrast transmitting laser
Move), calculate the information such as the frequency of vibration of laser emitting surface, amplitude.Signal processor processes is respectively
Come self-align reference laser vibration detection module and laser vibrometer detection module array obtain frequency of vibration and
Range parameter, and then calculate in laser transmitter group (laser vibrometer detection module and laser vibrometer detection
The first laser beam emitting device that module array includes and the Laser emission that the second laser beam emitting device includes
Device) frequency of vibration in focus area and range parameter.
Above-mentioned embodiment is improved, obtains present embodiment, as in figure 2 it is shown, this embodiment party
In formula, vehicle-mounted laser mike also includes an electro-motor 150, electro-motor respectively with signal processor,
Location reference laser vibration detection module and laser vibrometer detection module array electrical connection.In work process
In, the result obtained when signal processor processes is, at the photon that focus area inner laser diffuse-reflectance is returned
When quantity is inadequate, then can control electro-motor and control vehicle positioning laser vibrometer detection module and carry out region and sweep
Retouch, to obtain the focus area scope of accurate laser detection.
Above-mentioned embodiment is improved, obtains present embodiment, in the present embodiment, vehicle-mounted sharp
Light mike also includes a MEMS system, MEMS system respectively with signal processor, location reference
Laser vibrometer detection module and laser vibrometer detection module array electrical connection.In the course of the work, letter is worked as
It is that the photon numbers returned in focus area inner laser diffuse-reflectance is inadequate that number processor processes the result obtained
Time, then can control MEMS system control vehicle positioning laser vibrometer detection module and carry out sector scanning, with
Obtain the focus area scope of accurate laser detection.
Above-mentioned embodiment is improved, obtains present embodiment, as it is shown on figure 3, this embodiment party
In formula, vehicle-mounted laser mike also includes face identification system 160, face identification system and electro-motor
Or MEMS system connects, and face identification system is connected with signal processor.Furthermore, it is understood that face
Identification system includes photographic head and the microcontroller being electrically connected to each other.In the course of the work, this face is known
Other system is used for the face accurately identifying driver exact position in vehicle cab, the most electronic horse
Reach or driver's face location that MEMS system obtains according to face identification system, control vehicle positioning and swash
The Laser emission focus area of light vibration detection module array.More particularly, this face identification system leads to
Cross built-in photographic head and obtain the photo of driver, obtain driver's face carrying out processing by microcontroller
Position, portion.
It should be noted that, above-described embodiment all can independent assortment as required.The above is only this reality
By novel preferred implementation, it is noted that for those skilled in the art,
On the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve
Also protection domain of the present utility model is should be regarded as with retouching.
Claims (6)
1. a vehicle-mounted laser mike, it is characterised in that described vehicle-mounted laser mike includes:
Location reference laser vibration detection module, laser vibrometer detection module array, signal processor and
Mike, wherein, described location reference laser vibration detection module and described laser vibrometer detection module array
Electrically connecting with described signal processor respectively, described mike electrically connects with described signal processor；
Described location reference laser vibration detection module includes the first laser beam emitting device and the first laser pick-off
Device；
Described laser vibrometer detection module array includes organizing laser vibrometer detection module more, often organizes described laser
Vibration detection module includes the second laser beam emitting device and the second laser receiver, and described laser respectively
The quantity of the detection module of laser vibrometer described in vibration detection module array is even number.
2. vehicle-mounted laser mike as claimed in claim 1, it is characterised in that described vehicle-mounted laser Mike
Wind also includes an electro-motor, described electro-motor respectively with described signal processor, location reference laser
Vibration detection module and laser vibrometer detection module array electrical connection.
3. vehicle-mounted laser mike as claimed in claim 1, it is characterised in that described vehicle-mounted laser Mike
Also including a MEMS system in wind, described MEMS system swashs with described signal processor, location reference respectively
Light vibration detection module and laser vibrometer detection module array electrical connection.
4. vehicle-mounted laser mike as claimed in claim 2, it is characterised in that described vehicle-mounted laser Mike
Also including face identification system in wind, described face identification system is connected with described electro-motor, and described people
Face identification system is connected with signal processor.
5. vehicle-mounted laser mike as claimed in claim 3, it is characterised in that described vehicle-mounted laser Mike
Also including face identification system in wind, described face identification system is connected with MEMS system, and described face is known
Other system is connected with signal processor.
6. the vehicle-mounted laser mike as described in claim 4 or 5, it is characterised in that described recognition of face
System includes photographic head and the microcontroller being electrically connected to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500260.XU CN205812390U (en) | 2016-05-28 | 2016-05-28 | A kind of vehicle-mounted laser mike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500260.XU CN205812390U (en) | 2016-05-28 | 2016-05-28 | A kind of vehicle-mounted laser mike |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205812390U true CN205812390U (en) | 2016-12-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620500260.XU Expired - Fee Related CN205812390U (en) | 2016-05-28 | 2016-05-28 | A kind of vehicle-mounted laser mike |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320760A (en) * | 2018-01-05 | 2018-07-24 | 广东小天才科技有限公司 | The class offerings way of recording, device, equipment and storage medium based on microphone |
| CN111654794A (en) * | 2020-05-19 | 2020-09-11 | 歌尔智能科技有限公司 | MEMS microphone signal processing method and device and MEMS microphone |
| CN114679662A (en) * | 2022-05-27 | 2022-06-28 | 安徽至博光电科技股份有限公司 | Signal processing method and system |
-
2016
- 2016-05-28 CN CN201620500260.XU patent/CN205812390U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320760A (en) * | 2018-01-05 | 2018-07-24 | 广东小天才科技有限公司 | The class offerings way of recording, device, equipment and storage medium based on microphone |
| CN111654794A (en) * | 2020-05-19 | 2020-09-11 | 歌尔智能科技有限公司 | MEMS microphone signal processing method and device and MEMS microphone |
| CN111654794B (en) * | 2020-05-19 | 2021-05-18 | 歌尔智能科技有限公司 | MEMS microphone signal processing method and device and MEMS microphone |
| CN114679662A (en) * | 2022-05-27 | 2022-06-28 | 安徽至博光电科技股份有限公司 | Signal processing method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20161214 Termination date: 20170528 |