CN205681435U - Passenger train digital audio system - Google Patents
Passenger train digital audio system Download PDFInfo
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- CN205681435U CN205681435U CN201620585992.3U CN201620585992U CN205681435U CN 205681435 U CN205681435 U CN 205681435U CN 201620585992 U CN201620585992 U CN 201620585992U CN 205681435 U CN205681435 U CN 205681435U
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- audio
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- digital audio
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- decoding
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Abstract
The utility model relates to a kind of passenger train digital audio system, and this digital audio system includes broadcast host, IP phone, IP intercommunication terminal, multichannel IP decoding terminal, audio switching unit, power amplifier output unit and loudspeaker；Connected by industry ethernet between broadcast host, IP phone, IP intercommunication terminal and multichannel IP decoding terminal；Connected by analogue audio frequency bus between broadcast host, IP phone and audio switching unit；Multichannel IP decoding terminal output is sequentially connected with audio switching unit, power amplifier output unit and loudspeaker, and this digital audio system, by mutually compatible with analogue audio frequency bus transfer for digital audio bus transmission, improves flexibility and the high efficiency of vertical car audio system；And by the switch logic of audio switching unit, according to effective marker position priority, it is achieved the seamless switching between digital audio and video signals and simulated audio signal, it is ensured that the reliability of broadcasting for train intercommunication function.
Description
Technical field
The utility model relates to audio broadcasting field, specifically, relating to a kind of passenger train digital audio system.
Background technology
UIC568 audio-frequency bus is speech communication bus most widely used in passenger train system, train-installed broadcast, right
The system of saying passes through UIC568 bus transfer simulated audio signal.In long range propagation, there is distorted signals, decline in analogue audio frequency
The phenomenon such as subtract, tonequality is poor.And car body wiring complexity, control mode is dumb.
The ripe application on passenger train along with digital communication bus (such as Ethernet etc.) so that research and develop novel trip
Passenger train car digital broadcast apparatus is possibly realized.Digitized audio broadcast is provided that more preferable tonequality, and digitized audio intercommunication can carry
For more preferable full duplex to stressing results.Digitized audio frequency also allows for the storage to crucial audio frequency.
Utility model content
The purpose of this utility model is to provide a kind of passenger train digital audio system, improves broadcast tonequality and imitates with intercommunication
Really, it is ensured that the reliability of broadcasting for train intercommunication function.
The technical solution of the utility model is: a kind of passenger train digital audio system, this digital audio system includes extensively
Broadcast main frame, IP phone, IP intercommunication terminal, multichannel IP decoding terminal, audio switching unit, power amplifier output unit and loudspeaker；Extensively
Broadcast and connected by industry ethernet between main frame, IP phone, IP intercommunication terminal and multichannel IP decoding terminal；Broadcast host, IP electricity
Connected by analogue audio frequency bus between words and audio switching unit；Multichannel IP decoding terminal output is sequentially connected with Audio conversion
Unit, power amplifier output unit and loudspeaker.
Preferably, audio signal is acquired and modulates by described IP phone, through the audio signal after IP phone modulation
Dividing two-way output, a road enters analogue audio frequency bus as simulated audio signal output to audio switching unit and called IP electricity
Words；One tunnel enters industry ethernet and exports to multichannel IP decoding terminal and called IP phone as digital audio and video signals.
Preferably, described IP phone preserves all audio frequency file of this digital audio system, at this digital audio system
When idle, audio file is uploaded to broadcast host by industry ethernet.
Preferably, described multichannel IP decoding terminal at least includes No. three decoding circuits, and No. three decoding circuits can be simultaneously complete
Become audio decoder.
Preferably, when described multichannel IP decoding terminal receives the broadcasting command that industry ethernet transmits, the corresponding phase of decoding
The broadcasting channel audio signal answered, and by the effective marker position position of corresponding broadcast audio useful signal.
The utility model having the beneficial effect that compared with prior art
This digital audio system meets the totally digitilized audio broadcasting intercommunication function of passenger train requirement, broadcast host, IP
Being connected by industry ethernet between phone, IP intercommunication terminal and multichannel IP decoding terminal, broadcast host, IP phone and audio frequency are cut
Change and connected by analogue audio frequency bus between unit, by mutually compatible with analogue audio frequency bus transfer for digital audio bus transmission, carry
The flexibility of Gao Liche audio system and high efficiency；And by the switch logic of audio switching unit, excellent according to effective marker position
First level, it is achieved the seamless switching between digital audio and video signals and simulated audio signal, it is ensured that broadcasting for train intercommunication function reliable
Property.
Brief description
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Purpose, technical scheme and advantage for making the utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described to the technical scheme in the utility model embodiment.
Embodiment 1
Seeing Fig. 1, a kind of passenger train digital audio system includes broadcast host, IP phone, IP intercommunication terminal, multichannel IP
Decoding terminal, audio switching unit, power amplifier output unit and loudspeaker, broadcast host, IP phone, IP intercommunication terminal and multichannel IP
Connected by industry ethernet D-bus between decoding terminal, by simulation between broadcast host, IP phone and audio switching unit
Audio-frequency bus A-bus connects, and multichannel IP decoding terminal output is sequentially connected with audio switching unit, power amplifier output unit and raises one's voice
Device.
Broadcast host requires according to the prioritization logic of user's request, adjusts the audio signal of this digital audio system
Degree.The MP3 type file storing in broadcast host, when entering to broadcast in driving or broadcast outside car, is changed into numeral by broadcast host
Audio frequency flows out at most road IP decoding terminal.
IP intercommunication terminal is for realizing passenger emergency alarm to audio frequency letters such as the driver's intercommunications after passenger emergency alarm of making peace
Number collection and modulation, and realized between broadcast host, IP phone and multichannel IP decoding terminal by industry ethernet D-bus
Information mutual, i.e. IP intercommunication terminal only sends intercommunication request in Ethernet mode to broadcast host, by broadcast host according to
Priority orders, sends the request of IP intercommunication terminal to drivers' cab IP phone with the queueing form of FIFO.
IP phone for realizing manually broadcasting, driver and conductor's intercommunication, passenger advance collection and the tune of the audio signals such as intercommunication
System, IP phone is provided with button simultaneously, calls out the stops for transmission, gets over the information such as station.IP phone preserves the whole of this digital audio system
Audio file, and when this digital audio system is idle, audio file is uploaded to broadcast by industry ethernet D-bus main
Machine.
Audio signal after IP phone modulation divides two-way to export, and a road enters the modulation electricity of analogue audio frequency bus A-bus
Road exports to audio switching unit and called IP phone as simulated audio signal.One tunnel enters the number of industry ethernet D-bus
Word coding circuit exports to multichannel IP decoding terminal and called IP phone as digital audio and video signals.Wherein export to multichannel IP solution
The digital audio and video signals of code terminal, completes the decoding to digital audio and video signals by multichannel IP decoding terminal, and produces audio frequency and have
Effect signal, after decoding, digital audio and video signals and audio frequency useful signal export jointly to audio switching unit, audio switching unit root
According to switch logic, the digital audio and video signals exporting from analogue audio frequency bus A-bus and multichannel IP decoding terminal is switched over
After, it is sent to audio power amplifier unit, be sent to loudspeaker through audio power amplifier unit.
When multichannel IP decoding terminal receives the broadcasting command that industry ethernet D-bus transmits, the corresponding corresponding broadcast of decoding
Channel audio signal, and by the effective marker position position of corresponding broadcast audio useful signal.In the present embodiment, when multichannel IP solves
When code terminal receives the artificial broadcasting command that industry ethernet D-bus transmits, the corresponding artificial broadcasting channel audio signal of decoding, and
By the effective marker position position of artificial broadcast audio useful signal.Pass when multichannel IP decoding terminal receives industry ethernet D-bus
In the car sending during broadcasting command, broadcasting channel audio signal in the corresponding car of decoding, and by the having of broadcast audio useful signal in car
Valid flag position position.When multichannel IP decoding terminal receives the outer broadcasting command of car that industry ethernet D-bus transmits, decoding correspondence
The outer broadcasting channel audio signal of car, and by the effective marker position position of outer for car broadcast audio useful signal.
Audio switching unit completes switching according to the effective marker position of the audio frequency useful signal of multichannel IP decoding terminal, at this
In embodiment, audio switching unit will manually be broadcasted and both alternatives of broadcast in car, be delivered to power amplifier output unit, by outside car
Broadcast is fed directly to power amplifier output unit.
Audio switching unit carries out the switching of digital audio and video signals and simulated audio signal, switch logic according to switch logic
For: the effective marker position priority at industry ethernet D-bus is higher than the effective marker position priority of analogue audio frequency bus A-bus
When, audio switching unit switches to DAB to play immediately；High in the effective marker position priority of analogue audio frequency bus A-bus
When the effective marker position priority of industry ethernet D-bus, audio switching unit detects industry ethernet D-in time-out mode
The broadcasting command that bus transmits, receives the broadcasting command that industry ethernet D-bus transmits, then plays numeral sound in time-out time
Frequently signal；If not receiving the broadcasting command that industry ethernet D-bus transmits in time-out time, then play simulated audio signal.
The switch logic of audio switching unit is individually controlled by the audio switching unit often saving compartment, not by broadcast host control
System, by collecting and distributing control mode, effectively improves digital audio system reliability of operation.
This digital audio system also supports that television field frame TV-s and OCC audio frequency access, television field frame TV-s and Audio conversion
Unit input connects, and OCC audio frequency is connected with IP phone input, OCC audio priory level and artificial broadcast, driver and conductor couple
Say, passenger advances the audio signal priority such as intercommunication and can on-demand set.
Claims (5)
1. a passenger train digital audio system, it is characterised in that: this digital audio system include broadcast host, IP phone,
IP intercommunication terminal, multichannel IP decoding terminal, audio switching unit, power amplifier output unit and loudspeaker；Broadcast host, IP phone,
Connected by industry ethernet between IP intercommunication terminal and multichannel IP decoding terminal；Broadcast host, IP phone and Audio conversion list
Connected by analogue audio frequency bus between Yuan；Multichannel IP decoding terminal output is sequentially connected with audio switching unit, power amplifier output
Unit and loudspeaker.
2. passenger train digital audio system according to claim 1, it is characterised in that: described IP phone is to audio signal
Being acquired and modulating, the audio signal after IP phone modulation divides two-way to export, and a road enters analogue audio frequency bus as mould
Intend audio signal to export to audio switching unit and called IP phone；It is defeated as digital audio and video signals that one tunnel enters industry ethernet
Go out to multichannel IP decoding terminal and called IP phone.
3. passenger train digital audio system according to claim 1, it is characterised in that: described IP phone preserves this numeral
Audio file, when this digital audio system is idle, is uploaded to by all audio frequency file of audio system by industry ethernet
Broadcast host.
4. passenger train digital audio system according to claim 1, it is characterised in that: described multichannel IP decoding terminal is extremely
Including No. three decoding circuits less, No. three decoding circuits can complete audio decoder simultaneously.
5. passenger train digital audio system according to claim 1, it is characterised in that: described multichannel IP decoding terminal is received
During the broadcasting command transmitting to industry ethernet, the corresponding corresponding broadcasting channel audio signal of decoding, and sound will be broadcasted accordingly
Frequently the effective marker position position of useful signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620585992.3U CN205681435U (en) | 2016-06-14 | 2016-06-14 | Passenger train digital audio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620585992.3U CN205681435U (en) | 2016-06-14 | 2016-06-14 | Passenger train digital audio system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205681435U true CN205681435U (en) | 2016-11-09 |
Family
ID=57432879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620585992.3U Active CN205681435U (en) | 2016-06-14 | 2016-06-14 | Passenger train digital audio system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205681435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115440203A (en) * | 2021-06-03 | 2022-12-06 | 同方威视技术股份有限公司 | Voice control device and method for mobile robot and mobile robot |
-
2016
- 2016-06-14 CN CN201620585992.3U patent/CN205681435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115440203A (en) * | 2021-06-03 | 2022-12-06 | 同方威视技术股份有限公司 | Voice control device and method for mobile robot and mobile robot |
| CN115440203B (en) * | 2021-06-03 | 2023-12-01 | 同方威视技术股份有限公司 | Voice control device and method for mobile robot and mobile robot |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |