CN208572094U - It is a kind of using optical fiber transmission automobile sound, video system - Google Patents
It is a kind of using optical fiber transmission automobile sound, video system Download PDFInfo
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- CN208572094U CN208572094U CN201820941103.1U CN201820941103U CN208572094U CN 208572094 U CN208572094 U CN 208572094U CN 201820941103 U CN201820941103 U CN 201820941103U CN 208572094 U CN208572094 U CN 208572094U
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Abstract
The utility model relates to a kind of automobile sounds using optical fiber transmission, video system, including host, optical communication host node, optical communication from node and in-vehicle multi-media system, in-vehicle multi-media system includes three parts: sensor module, master control plate module, loudspeaker and display；The utility model carries out transmitted in both directions, with wide, low delay, strong antijamming capability；Carry out active noise elimination；Integrated video sensor completes video acquisition, transmission, processing and display.
Description
Technical field
The utility model relates to a kind of automobile sounds using optical fiber transmission, video system, belong to car audio detection technique
Field.
Background technique
Improve car steering experience not being focusing only in the manipulation and operation of vehicle, further includes the intelligent water for improving vehicle
Gentle internal environment comfort level.Vehicle multimedia system is installed, for executing various and driver and passenger navigation on vehicle
And audio visual entertainment etc., the riding experience of driver and passenger can be promoted.Vehicle multimedia system may include being mounted on major-minor
Driving, rear passenger, the sensor outside passenger compartment are (for example, microphone, video sensor, accelerometer, GPS module, tire pressure are examined
Survey etc.), playing audio/video etc..
For executing Audio Signal Processing, can be one of above-mentioned vehicle multimedia system has automobile noise management system
Machine component part, for enhancing, inhibiting and/or eliminating the indoor noise in vehicle interior cabin.Automobile noise management system can wrap
The one or more sensors (for example, microphone, accelerometer etc.) for being mounted on each position of vehicle are included, to monitor and detection is made an uproar
Sound source, such as engine noise, wind noise, Vehicular vibration, road rumble, tyre cavity noise or caused by mobile vehicle part
Other noises based on vibration.
Existing automobile sound, video system have the disadvantage in that
Existing Vehicular video scheme, each node are all made of individual harness and are connected to host, the strand design of host side
It is complicated.
Unshielded twisted pair is used in existing onboard audio scheme, the transmission range between each node is short (≤10m), transmission
Broadband is narrow (< 50Mbps), is generally unable to transmission of video information；Anti-interference ability is weak.
Existing vehicle-mounted clunk management system generally picks up noise using the microphone being dispersed in automobile passenger compartment everywhere
Afterwards, it transmits signals in host digital signal processing module and is handled, then be transmitted to power amplifier and loudspeaker sending reverse phase sound wave
To reach noise reduction.The signal dealing of dispersion, overall wire sheaves arrangement is extremely complex, and performance adjustment is inconvenient.
Summary of the invention
The technical problems to be solved in the utility model is against the above deficiency, to provide a kind of automobile transmitted using optical fiber
Sound, video system carry out transmitted in both directions, with wide, low delay, strong antijamming capability；Carry out active noise elimination；Integrated video
Sensor completes video acquisition, transmission, processing and display.
In order to solve the above technical problems, the technical solution adopted in the utility model is as follows: it is a kind of using optical fiber transmission
Automobile sound, video system, including host, optical communication host node, optical communication are from node and in-vehicle multi-media system, vehicle mounted multimedia
System includes three parts: sensor module, master control plate module, loudspeaker and display.
As a further improvement of the above technical scheme:
The master control plate module includes that fiber optical transceiver, analog-digital converter, video coder/decoder, DSP module, power are put
Big device.
The sensor module include for road surface by automobile tire conduction come noise signal acquisition needed for acceleration
Spend sensor and the microphone for the sound signal collectings such as passenger's interior noise and passenger's voice.
The sensor module further includes video sensor.
The DSP module is electrically connected with analog-digital converter, fiber optical transceiver, power amplifier, video coder/decoder respectively
It connects.
The analog-digital converter includes the first analog-digital converter and the second analog-digital converter, the first analog-digital converter and acceleration
Sensor electrical connection is spent, the second analog-digital converter is electrically connected with microphone.
The video coder/decoder is electrically connected with video sensor, display respectively；Power amplifier is electrically connected with loudspeaker
It connects.
The DSP module is used for by the collected voice signal digitized of acceleration transducer and microphone, with master
Machine is compared by the wanted sound signal that optical communication comes from node-node transmission, to distinguish useful signal and noise signal.
The fiber optical transceiver is used to carry out optical communication with upstream and downstream node, completes to convert from light to the signal of electricity.
The analog-digital converter is used for acceleration transducer or the collected analog signal digital of microphone sensor,
To be used for Digital Signal Processing；
Video coder/decoder is used to encode the vision signal that video sensor transmitting comes, and is transmitted to DSP mould
Block, or the vision signal that DSP module transmitting comes is decoded and is transmitted to display.
The utility model takes above technical scheme, has the advantage that
Daisy topology is used between each node, node interconnection is simple, and overall wire sheaves layout is simple, at low cost, reliability
It is high.
Transmitted in both directions is carried out using fiber optical transceiver between each node, speed is fast, delay is low；Strong antijamming capability；Transmission
Bandwidth > 100Mbps/1000Mbps, can simultaneous transmission sound, video and control command.
Integrated vehicle-mounted clunk management system by the information collection of microphone sensor in accelerometer out of my cabin and cabin and
The signal processing of DSP, can comprehensive carry out active noise elimination, can achieve the 20dB noise reduction water not less than the prior art
It is flat, comfortable passenger's indoor environment is provided.
Integrated video sensor completes video acquisition, transmission, processing and display, vehicle intellectualized, entertainment orientation to be promoted
It needs.
The utility model is described in further detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Attached drawing 1 is in the utility model embodiment using the automobile sound of optical fiber transmission, the structural schematic diagram of video system.
In figure, 1- host；2- optical communication host node；3- optical communication is from node；4- master control plate module；5- acceleration sensing
Device；The first analog-digital converter of 6-；7-DSP module；8- microphone；9- fiber optical transceiver；10- video sensor；11- power amplification
Device；12- loudspeaker；13- touch control display；14- video coder/decoder；The second analog-digital converter of 15-；16- power supply line；17- light
It is fine.
Specific embodiment
Embodiment, as shown in Fig. 1, a kind of automobile sound using optical fiber transmission, video system, including host 1, optical communication
Host node 2, optical communication are from node 3 and in-vehicle multi-media system, wherein host 1 is completed user and referred to as control and arithmetic core
It enables, the functions such as the data processing of audio-video and fault diagnosis.
Optical communication host node 2 is the creator of optical communication agreement, and implement management realize each node of daisy topology between
The task of information exchange；
17 progress signal transmission of optical fiber, power supply line 16 is for being powered system.
In-vehicle multi-media system, from a kind of existence form of node 3, also assists in daisy chain information exchange as optical communication,
Include three parts: sensor module, master control plate module 4, loudspeaker 12 and touch control display 13；
1) sensor module includes video sensor, acquires the video information of motor vehicle environment or car.
Sensor module further includes the microphone for the sound signal collectings such as passenger's interior noise and passenger's voice, and is used
In road surface by automobile tire conduction come noise signal acquisition needed for acceleration transducer.
Sensor module can with but be not limited to include the interior external environment such as GPS module, tire pressure monitoring, photosensitive sensor,
The relevant sensor such as geography information position, vehicle condition.
2) master control borad: master control plate module 4 includes fiber optical transceiver 9, analog-digital converter, video coder/decoder 14, DSP mould
Block 7, power amplifier 11.
DSP module 7 is electrically connected with analog-digital converter, fiber optical transceiver 9, power amplifier 11, video coder/decoder 14 respectively
It connects, analog-digital converter includes the first analog-digital converter 6 and the second analog-digital converter 15, and the first analog-digital converter 6 is passed with acceleration
Sensor 5 is electrically connected, and the second analog-digital converter 15 is electrically connected with microphone 8；Video coder/decoder 14 respectively with video sensor
10, touch control display 13 is electrically connected；Power amplifier 11 is electrically connected with loudspeaker 12.
A) fiber optical transceiver 9 is used to carry out optical communication with upstream and downstream node, completes to convert from light to the signal of electricity.
B) analog-digital converter is used for acceleration transducer 5 or the collected analog signal figure of 8 sensor of microphone
Change, to be used for Digital Signal Processing.Analog-digital converter can integrate inside each sensor or DSP.
C) video coder/decoder 14 is used to encode the vision signal that the transmitting of video sensor 10 comes, and is transmitted to
DSP module 7, or the vision signal that the transmitting of DSP module 7 comes is decoded and is transmitted to touch control display 13.
D) DSP module 7 is used for acceleration transducer 5 and the collected voice signal digitized of microphone 8, with
Host 1 is compared by optical communication from the wanted sound signal that node 3 transmits, to distinguish useful signal and noise letter
Number: for useful signal, can directly be played by loudspeaker；For noise signal, noise signal can be subjected to reverse phase processing,
It is played back with identical amplitude by loudspeaker 12, it can achieve the purpose that active noise eliminates (ANC)；
DSP module 7 can be also used for the correlated digital signals interacted at the node with the audio-video of people and touch-control processing, full
Sufficient car entertainment needs.
E) power amplifier 11 is used to the voice signal that the transmitting of DSP module 7 comes carrying out power amplification, for delivery to raising
Sound device 12 carries out playback, completes audio visual entertainment or ANC needs.
3) loudspeaker 12 completes audio amusement or ANC needs for playing sound.
4) touch control display 13 needs to be presented to the interface of passenger for display system, and passenger can be as needed with touching
It controls and is interacted on the display of function with system.
Claims (10)
1. a kind of automobile sound using optical fiber transmission, video system, it is characterised in that: including host (1), optical communication host node
(2), for optical communication from node (3) and in-vehicle multi-media system, in-vehicle multi-media system includes three parts: sensor module, master
Control plate module (4), loudspeaker (12) and display (13).
2. a kind of as described in claim 1 using the automobile sound of optical fiber transmission, video system, it is characterised in that: the master control
Plate module (4) includes fiber optical transceiver (9), analog-digital converter, video coder/decoder (14), DSP module (7), power amplifier
(11).
3. a kind of automobile sound using optical fiber transmission as described in claim 1, video system, it is characterised in that: the sensing
Device module include for road surface by automobile tire conduction come noise signal acquisition needed for acceleration transducer (5) and be used for
The microphone (8) of the sound signal collecting of passenger's interior noise and passenger's voice.
4. a kind of automobile sound using optical fiber transmission as described in claim 1, video system, it is characterised in that: the sensing
Device module further includes video sensor (10).
5. a kind of automobile sound using optical fiber transmission as claimed in claim 2, video system, it is characterised in that: the DSP mould
Block (7) is electrically connected with analog-digital converter, fiber optical transceiver (9), power amplifier (11), video coder/decoder (14) respectively.
6. a kind of automobile sound using optical fiber transmission as claimed in claim 2, video system, it is characterised in that: the modulus
Converter includes the first analog-digital converter (6) and the second analog-digital converter (15), the first analog-digital converter (6) and acceleration sensing
Device (5) electrical connection, the second analog-digital converter (15) are electrically connected with microphone (8).
7. a kind of automobile sound using optical fiber transmission as claimed in claim 2, video system, it is characterised in that: the video
Coder/decoder (14) is electrically connected with video sensor (10), display (13) respectively；Power amplifier (11) and loudspeaker (12)
Electrical connection.
8. a kind of automobile sound using optical fiber transmission as claimed in claim 2, video system, it is characterised in that: the DSP mould
Block (7) is used to pass through acceleration transducer (5) and the collected voice signal digitized of microphone (8) with host (1)
The wanted sound signal that optical communication comes from node-node transmission is compared, to distinguish useful signal and noise signal.
9. a kind of automobile sound using optical fiber transmission as claimed in claim 2, video system, it is characterised in that: the optical fiber
Transceiver (9) is used to carry out optical communication with upstream and downstream node, completes to convert from light to the signal of electricity.
10. a kind of automobile sound using optical fiber transmission as claimed in claim 2, video system, it is characterised in that: the modulus
Converter is used for acceleration transducer (5) or the collected analog signal digital of microphone (8) sensor, for number
Signal processing；
Video coder/decoder (14) is used to encode the vision signal that video sensor (10) transmitting comes, and is transmitted to DSP
Module (7), or the vision signal that DSP module (7) transmitting comes is decoded and is transmitted to display (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820941103.1U CN208572094U (en) | 2018-06-19 | 2018-06-19 | It is a kind of using optical fiber transmission automobile sound, video system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820941103.1U CN208572094U (en) | 2018-06-19 | 2018-06-19 | It is a kind of using optical fiber transmission automobile sound, video system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208572094U true CN208572094U (en) | 2019-03-01 |
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ID=65486271
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820941103.1U Active CN208572094U (en) | 2018-06-19 | 2018-06-19 | It is a kind of using optical fiber transmission automobile sound, video system |
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| Country | Link |
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| CN (1) | CN208572094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037665A (en) * | 2019-11-20 | 2020-12-04 | 成都成电光信科技股份有限公司 | Low-delay video transmission system for LED ball screen display |
-
2018
- 2018-06-19 CN CN201820941103.1U patent/CN208572094U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037665A (en) * | 2019-11-20 | 2020-12-04 | 成都成电光信科技股份有限公司 | Low-delay video transmission system for LED ball screen display |
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