CN108900270A - Method and digital broadcasting system on train for train broadcasting system - Google Patents
Method and digital broadcasting system on train for train broadcasting system Download PDFInfo
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- CN108900270A CN108900270A CN201811155631.5A CN201811155631A CN108900270A CN 108900270 A CN108900270 A CN 108900270A CN 201811155631 A CN201811155631 A CN 201811155631A CN 108900270 A CN108900270 A CN 108900270A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/024—Guidance services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/02—Arrangements for relaying broadcast information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
- H04H20/62—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/56—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/58—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 of audio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
- H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
- H04H60/90—Wireless transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of methods for train broadcasting system, and for the method for train broadcasting system, including when system failure, broadcasting for train host system sends alarm signal to the method for hand terminal system：Feedback signal is obtained, judges that system is in abnormal condition by feedback signal；The alarm voice digital audio and video signals of storage are transferred as alarm signal；Alarm voice digital audio and video signals are converted into wireless audio signal and are transferred out；Alarm voice digital audio and video signals are converted into alarm voice analog audio signal to export；If acknowledging receipt of alarm signal, the transmission of stop alarm signal；If unconfirmed receive alarm signal, the transmission of alarm signal is persistently carried out.The present invention improves the efficiency that attendant deals with urgent work.The invention also discloses a kind of digital broadcasting system on train to realize train broadcasting system digitlization, automation by using the above-mentioned method for train broadcasting system.
Description
Technical field
The present invention relates to Traffic Announcement technical fields, more particularly to a kind of method and number for train broadcasting system
Change train broadcasting system.
Background technique
Existing broadcasting for train host is mostly host desktop, is placed in broadcasting for train room, whenever needs carry out full vehicle
When broadcast, announcer needs to operate before broadcast host, and broadcast host is as simple forwarding tool, by broadcasting speech through power amplifier
After convey each compartment, special announcer is commonly equipped on train and is responsible for operation to speech amplifier, guarantees that broadcast is timely conveyed
To passenger.But need to operate host in specified studio when being broadcasted, the activity of announcer is greatly limited, it cannot
It is enough to realize remote operation broadcast host.And existing broadcast host equipment and technology content is lower, indicates simple relaying voice,
All voice messagings are all from announcer, lack automatic broadcast capability.Announcer needs oneself anticipation to arrive at a station opportunity, and suitable
When period passenger is broadcasted, be not carried out speech amplifier according to the automatic casting of navigator fix, be easy to that there are errors in this way.Extensively
It broadcasts machine and is generally only equipped with single power amplifier, after Module Fail, announcer need to convey the letter that arrive at a station with loudspeaker to each compartment
Breath, it is inconvenient.
Summary of the invention
The purpose of the present invention is to provide one kind to remotely operate, broadcast message is more acurrate, it is wide for train to automate
Broadcast the method and digital broadcasting system on train of system.
The technology that a kind of method and digital broadcasting system on train for train broadcasting system disclosed by the invention uses
Scheme is：
Method for train broadcasting system：
Broadcasting for train host reads pre-set configuration file, completes corresponding configuration work and enters automatic broadcasting state；
Satellite navigation and positioning data and acceleration information are persistently obtained, is calculated using inertial navigation technique and acceleration calculation method
Inertial navigation location data out；
The station data for obtaining storage, location data and inertial navigation location data are compared with station data；
Transfer the audio data of the specified casting voice of storage；
The audio data of specified casting voice is converted into analog audio signal from digital audio and video signals；
Inside real-time monitoring system and judge failure；
If not breaking down, analog audio signal is transferred to each compartment by broadcasting for train host after power amplification and carries out
Voice broadcast, if breaking down, output control signal cut-in stand-by power amplification transmission path, analog audio signal is by spare
Power path amplification is transferred to each compartment by broadcasting for train host after analog audio signal amplification and carries out voice broadcast.
Preferably, user issues control instruction by handheld terminal；
Control instruction is converted into wireless signal and sends；
It receives wireless signal and is decoded；
The audio data of specified casting voice is transferred according to the decoded control instructions；
The audio data of specified casting voice is converted into analog audio signal from digital audio and video signals；
Analog audio signal is transferred to each compartment by broadcasting for train host after power amplification and carries out voice broadcast.
Preferably, fault-signal is detected inside broadcasting for train host；
Export the connection that control instruction completes wireless telecommunications between broadcasting for train host and handheld terminal；
Output control instruction transfers the alarm voice digital audio and video signals of storage；
Alarm voice digital audio and video signals become alarm voice wireless signal transmission to handheld terminal；
Alarm voice wireless signal is converted into alarm voice digital audio and video signals；
Alarm voice digital audio and video signals are converted to alarm voice analog audio signal；
Handset speaker exports alarm voice analog audio signal.
A kind of digital broadcasting system on train, including broadcast host system and hand terminal system, the broadcast host system
System includes mainboard and ARM central controller plate, and the mainboard includes mainboard MCU, and the ARM central controller plate includes at ARM
Device is managed, passes through Ethernet switch module connection, the mainboard MCU and described between the mainboard MCU and the arm processor
Arm processor is responsible for each module and each circuit in control system and completes corresponding function.
The broadcast host system further includes navigation system, and the navigation system includes the combination of GPS/BDS+MEMS dual system
Navigation module, the GPS/BDS+MEMS dual system integrated navigation module include BDS/GPS bimodulus active antenna, the BDS/
Then GPS dual-mode active antenna feeds back to the arm processor, the ARM for receiving the data and information that satellite is sent
Processor is connected with memory module.
The navigation system further includes inertial navigation system, and the inertial navigation system includes that inertial navigator and speed pass
Sensor, the inertial navigator and the velocity sensor are electrically connected with the arm processor respectively.
The broadcast host system further includes wireless communication system, and the wireless communication system includes radio transmitting device,
The radio transmitting device includes radio transmission antenna, is electrically connected between the radio transmitting device and the mainboard MCU, institute
It states radio transmitting device and passes through the radio transmission antenna and the hand terminal system communication connection, the radio transmitting device
The instruction feedback that the handheld terminal transmission received comes is to the mainboard MCU.
The broadcast host system further includes the audio system being electrically connected with the mainboard MCU and the arm processor,
The audio system passes through broadcasting for train audio-frequency bus for receiving and processing inside and outside audio signal, the audio system
The loudspeaker in audio signal transmission to each compartment is broadcasted.
Preferably, the audio system includes Audio Signal Processing/routing module control, at the audio signal
It is electrically connected between reason/routing module control and the mainboard MCU, the Audio Signal Processing/routing module control passes through sound
Frequency conversion module connects the arm processor, the analog audio signal that the Audio Signal Processing/routing module control transmission comes
Become digital audio and video signals after audio conversion module, after the arm processor receives the audio conversion module conversion
Digital audio and video signals are stored, and the digital audio and video signals of the arm processor storage become mould after audio conversion module
Quasi- audio signal, the Audio Signal Processing/routing module control receive the analogue audio frequency after conversion module conversion
Signal is simultaneously transferred to the module for needing audio signal to input and circuit.
Preferably, wireless transmission control mould is also connected between the mainboard MCU and the radio transmitting device
Block and alarm voice module, the mainboard MCU output control signal control the alarm voice module and export alarm voice, alarm
Voice is transferred to the hand terminal system, the audio letter that the hand terminal system transmission comes by the radio transmitting device
It number is received via the radio transmitting device and passes through the radio transmission control module and feed back to the mainboard MCU and the sound
The audio signal received is passed through institute by audio signalprocessing/routing module control, the Audio Signal Processing/routing module control
It states audio conversion module and feeds back to the arm processor.
Preferably, the audio system further includes audio input system and audio output system, and the audio is defeated
Entering system includes External micro phone module, built-in microphone module, radio receiver module and route input module, the External micro phone mould
Block, built-in microphone module, radio receiver module and route input module audio signal be input to the Audio Signal Processing/road
By control module, the audio output system includes test load, output voltage electric current display module and monitoring loudspeaker, described
Treated that audio signal is output to the test load, output voltage electric current is shown for Audio Signal Processing/routing module control
Module and monitoring loudspeaker.
It preferably, further include power amplification system, the power amplification system includes main power amplifier module and standby power amplifier module, master
Plate MCU exports control signal to the power amplification system, and power amplification system transmits the Audio Signal Processing/routing module control to come
Audio signal carry out power amplification processing, by power amplification treated broadcast voice signal by Audio Signal Processing/road
Each compartment loudspeaker is transferred to by control module to be broadcasted.
Preferably, the arm processor is connected to 4GLTE mobile communications device, institute by 4GLTE communication serial port
It states 4GLTE mobile communications device and 4G mobile communications network is connected to by 4GLTE communication antenna, the arm processor is also connected with
Have NandFlash program storage and SDRAM data storage, be also connected on the arm processor LCD display interface,
Touch screen interface, SD card interface and USB interface.
It preferably, further include power-supply system, the power-supply system includes power switching module, silicon rectification bridge mould
Block, power-supply filter module and isolated power supply module, the input terminal of the power switching module accesses train power bus, described
The input terminal of power switching module is also connected with fuse, and the output end of the power switching module connects the silicon rectification bridge mould
The output end of the input terminal of block, the silicon rectification bridge module connects the power-supply filter module, the power-supply filter module
Output end connect the input terminal of the mainboard, the ARM central controller plate and the power amplification system, the power-supply filter
The output end of module connects the input terminal of the isolated power supply module, distinguishes on the mainboard and the ARM central controller plate
It is provided with motherboard power supply conversion module and ARM central controller plate power conversion module, the motherboard power supply conversion module and institute
The input terminal for stating ARM central controller plate power conversion module connects the output end of the isolated power supply module, the mainboard electricity
Source conversion module and the ARM central controller plate power conversion module include 3.3V power conversion module, the conversion of 5V power supply
Module and 12V power conversion module export different voltage according to different circuits and different components.
The present invention provides a kind of method for train broadcasting system, after broadcasting for train host system breaks down, in time
Transmission alarm signal to hand terminal system, alarm signal is alarmed in a manner of voice broadcast from hand terminal system,
Staff is set timely to find alarm condition.Also, it is only carried out as staff in this one end of hand terminal system true
After recognizing operation, broadcasting for train host system just can stop alarm signal transmission, otherwise, then always send alarm signal to hold
Terminal system prevents omission to be delayed the emergency processing time, improves until staff has found alarm condition
The efficiency that attendant deals with urgent work.
The present invention provides a kind of digital broadcasting system on train using the above-mentioned method for train broadcasting system, when wide
It broadcasts after host system powers on, broadcast host system default is called out the stops mode automatically into satellite.The bis- navigation system receptions of BDS/GPS are defended
The located in connection data and information that star is sent, are transmitted further to the arm processor of broadcast host system, arm processor is according to number
It is judged that train position, then according to train position, arm processor transfers corresponding digital sound from memory module
The digital audio and video signals taken out are transferred to audio system by frequency signal, arm processor, by audio system treated sound
Frequency signal is played out by the loudspeaker that broadcasting for train audio-frequency bus is transferred to each compartment.When no navigation signal, inertia
Navigator and velocity sensor using inertial navigation technique and combine acceleration calculation method to prejudge the coordinate of train, while data being passed
It is defeated by the arm processor to be handled, arm processor transfers corresponding digital sound according to the result of processing from memory module
The digital audio and video signals taken out are transferred to audio system by frequency signal, arm processor, by audio system treated sound
Frequency signal is played out by the loudspeaker that broadcasting for train audio-frequency bus is transferred to each compartment.
In automatic broadcasting process, speech amplifier host system can automatically switch various broadcast modes according to operating condition, or
It is instructed according to operator, the operation such as switches various broadcast modes, broadcasted and manually broadcasted manually.In whole process, broadcast
Host system is in addition to that during train operation, can be not required to other than setup phase needs staff to carry out necessary setting in advance
Manual intervention is wanted, broadcast host system voluntarily judges broadcast requests and carries out alignment processing.
Hand terminal system issues instruction and is transferred to wireless communication system, after wireless communication system receives instruction, by it
Mainboard MCU and arm processor are fed back to, arm processor transfers corresponding digital audio and video signals according to the instruction that feedback obtains, so
After be transferred to audio system and broadcasted.The present invention can remotely operate, and be greatly reduced manually by information-based means
Intervention, broadcast host system can be studied and judged independently, autonomous action, independently be disposed, in completely new, efficient, safe operation work
In scene, more convenient, accurate information is provided for passenger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of digital broadcasting system on train of the invention.
Fig. 2 is the structural schematic diagram of digital broadcasting system on train of the invention.
Fig. 3 is the structural schematic diagram of the main board system of digital broadcasting system on train of the invention.
Fig. 4 is the ARM central control system structural schematic diagram of digital broadcasting system on train of the invention.
Fig. 5 is the structural schematic diagram of the alarm signal transmission of digital broadcasting system on train of the invention.
Fig. 6 is the structural schematic diagram of the power amplification system of digital broadcasting system on train of the invention.
Fig. 7 is the structural schematic diagram of the audio system audio signal transmission of digital broadcasting system on train of the invention.
Specific embodiment
The present invention is further elaborated and is illustrated with Figure of description combined with specific embodiments below：
Fig. 1,5 are please referred to, for the method for train broadcasting system, including when system failure, broadcasting for train host system
System sends alarm signal to the method for hand terminal system：
Feedback signal is obtained, judges that system is in abnormal condition by feedback signal；
The alarm voice digital audio and video signals of storage are transferred as alarm signal；
Output control signal establishes wireless telecommunications；
Alarm voice digital audio and video signals are converted into wireless audio signal and are transferred out；
The wireless audio signal that transmission comes will be received to be decoded and be converted to alarm voice digital audio and video signals；
Alarm voice digital audio and video signals are converted into alarm voice analog audio signal to export；
If acknowledging receipt of alarm signal, confirmation feedback signal, the transmission of stop alarm signal are sent；
If unconfirmed receive alarm signal, confirmation feedback signal is not received, persistently carries out the transmission of alarm signal.
Receive power amplifier failure alarm signal；
Confirmation receives, and sends confirmation feedback signal；
It receives confirmation feedback signal and stops the transmission of power amplifier failure alarm signal；
Output control signal realizes the switching of spare power amplifier.
Secondary handheld terminal unlatching/closing including several attendants sends a signal to the side of the main handheld terminal of train chief
Method：
When secondary handheld terminal is opened：
Secondary handheld terminal and the broadcasting for train host system establish wireless telecommunications；
Secondary handheld terminal sends enabling signal；
Corresponding casting digital audio and video signals are transferred after receiving enabling signal；
Main handheld terminal is sent by corresponding casting digital audio and video signals；
It receives corresponding casting digital audio and video signals and is converted into casting analog audio signal and exported；
When secondary handheld terminal is closed：
Secondary handheld terminal sends shutdown signal, and disconnects the wireless telecommunications with the broadcasting for train host system：
It transfers corresponding casting digital audio and video signals and is sent to main handheld terminal；
It receives corresponding casting digital audio and video signals and is converted into casting analog audio signal and exported
Method including hand terminal system control broadcasting for train host system on/off：
When broadcasting for train host system is in off-mode：
It sends activation instruction and establishes wireless telecommunications；
Activation instruction is received to start to start and feed back activation signal；
Activation signal is received, starts to send control instruction；
When broadcasting for train host system is in open state：
Send out code；
Reception out code, which stops working and feeds back, is turned off signal；
Reception is turned off signal, disconnection of wireless communication.
The method broadcasted automatically including broadcasting for train host system：
Satellite navigation and positioning data are obtained, oplimal Location data are screened；
Acceleration information is obtained, calculates inertial navigation location data using inertial navigation technique and acceleration calculation method；
The station data for obtaining storage, location data and inertial navigation location data are compared with station data；
The website for transferring storage is called out the stops digital audio and video signals；
Website digital audio and video signals of calling out the stops are converted into website and call out the stops analog audio signal；
Website analog audio signal of calling out the stops is exported after power amplification.
Please refer to Fig. 1,2,3,4, a kind of digital broadcasting system on train, including broadcasting for train host system and handheld terminal
System, the broadcast host system include main board system and ARM central control system, and the main board system and the ARM are central
It is electrically connected between control system, the hand terminal system includes main hand terminal system and several secondary handheld terminal systems
System.Train chief will be seen that the situation of broadcasting for train host system by the main handheld terminal.
The handheld terminal of hand terminal system is made of hand-held radio telephone, charger, battery etc..Hand-held radio telephone work is specified
Frequency has selected the hand-held radio telephone of 400~470Mhz working frequency, the frequency ranges of operation that can be specified inside railway.It should
Hand-held radio telephone has display screen and keyboard, intuitive display operation, state and can be grasped by key etc. to broadcast machine host
Make.
The main board system includes mainboard MCU, the model STM32F207 of the mainboard MCU.The center the ARM control
System includes arm processor, the model S3C2416 of arm processor.Between the mainboard MCU and the arm processor electrically
Connection, the mainboard MCU and the arm processor are responsible for each module and each circuit in control system and complete corresponding function.
(one kind of flash memory, inside is using non-thread by arm processor, Nand Flash for ARM central control system
Property macroelement mode) program storage, SDRAM (synchronous DRAM) data storage etc. constitute.Arm processor is used
It shows and controls in the double satellite location datas of reception processing, automatic broadcasting logic control/sound broadcast control, man-machine interface, with
And the network signal of 4G LTE mobile communication module.The arm processor is connected to 4GLTE by 4GLTE communication serial port and moves
Dynamic communication device, the 4GLTE mobile communications device are connected to 4G mobile communications network by 4GLTE communication antenna.The ARM
LCD display interface, touch screen interface, SD card interface and USB interface are also connected on processor.SD, can as storage medium
Required data are said with train car voice broadcast service.
The main board system further includes the alarm voice module and wireless transport module with mainboard MCU electric connection,
The wireless transport module is used to for the control signal that the mainboard MCU and the arm processor issue being sent to described hand-held
Terminal system, and receive the signal that the hand terminal system is sent.
Referring to FIG. 6, the main board system further includes the power amplification system being electrically connected with the mainboard MCU, the power amplifier
System includes main power amplifier module, standby power amplifier module and output switching module, and the main power amplifier module and the standby power amplifier module are simultaneously
It is associated between the mainboard MCU and the output switching module, the input terminal of the output switching module connects the mainboard
MCU.Mainboard MCU exports control signal to the output switching module, the output switching module can from main power amplifier module with
It is switched between standby power amplifier module.
Under normal circumstances, mainboard MCU exports control signal and gives output switching module, and main power amplifier mould is connected in output switching module
Block closes standby power amplifier module to the circuit of load to the circuit of load.Mainboard MCU can the main power amplifier module of real-time monitoring and standby power amplifier
Module feedback come status signal, and by feed back come status signal judge main power amplifier and for power amplifier working condition whether
Normally.
When mainboard MCU by main power amplifier module feed back come status signal judge that main power amplifier module breaks down, can not
After normal work, mainboard MCU exports control signal and closes main power amplifier module to output switching module, and opens standby power amplifier module,
It selects control signal to control output switching circuit by audio output simultaneously and the audio signal of standby power amplifier module is transmitted to rear end
Load.
The main board system further includes navigation system, is electrically connected between the navigation system and the mainboard MCU, described
Navigation system includes BDS (BeiDou Navigation Satellite System China Beidou satellite navigation system)/GPS
(Global Positioning System global positioning system) double navigation system and inertial navigation system.The BDS/GPS is bis-
Navigation system includes data sink, and the data sink is used to receive the location data that satellite is sent and is sent to
The arm processor.The data sink includes BDS/GPS bimodulus active antenna, the BDS/GPS bimodulus active antenna
For receiving the data and information that satellite is sent, the arm processor is then fed back to.Bis- navigation system of GPS/BDS and used
Property navigation system use GPS/BDS+MEMS (Microelectro Mechanical Systems MEMS) dual system group
Navigation module is closed, built-in 6 axis MEMS device can support BDS+GPS dual system simultaneously.The inertial navigation system includes inertia
Navigator and velocity sensor, the inertial navigator and the velocity sensor are electrically connected with the arm processor respectively.
Referring to FIG. 7, the main board system further includes audio system, the audio system for receive and process it is internal and
External audio signal, the audio system pass through broadcasting for train audio-frequency bus for audio signal transmission to the loudspeaker in each compartment
It is broadcasted.
Arm processor is connected to audio ADC and DAC interface circuit by digital audio interface signal, passes through what will be stored
Digital audio and video signals are converted to analog broadcasting voice by DAC, send Audio Signal Processing/route test mould on mainboard to
Block；Meanwhile the Audio Signal Processing on mainboard/routing module control transfers the audio signal that the needs to come are recorded and passes through ADC
Digital audio and video signals are converted to, are stored into SD card by arm processor.
The audio system includes Audio Signal Processing/routing module control, the Audio Signal Processing/route test mould
It is electrically connected between block and the mainboard MCU, the Audio Signal Processing/routing module control is connected by audio conversion module
The arm processor, the analog audio signal that the Audio Signal Processing/routing module control transmission comes pass through audio modulus of conversion
Become digital audio and video signals after block, the arm processor receive the digital audio and video signals after the audio conversion module conversion into
The digital audio and video signals of row storage, the arm processor storage become analog audio signal after audio conversion module, described
Audio Signal Processing/routing module control receives the analog audio signal after conversion module conversion and is transferred to needs
The module and circuit of audio signal input.
The main board system further includes External micro phone module, built-in microphone module, radio receiver module and route input module,
The External micro phone module, built-in microphone module, radio receiver module and the audio signal of route input module input are input to
Audio Signal Processing/the routing module control, by being exported after the Audio Signal Processing/routing module control processing.
Built-in microphone module is located inside host.External micro phone module is connected on External micro phone by interface.Radio
The FM amplitude modulation signal in module reception broadcasting station.Route input module reception external sound source, such as the sound of MP3 player are defeated
Enter.Wireless transport module and handheld terminal cooperate, and can receive the mouth sent from handheld terminal and broadcast voice.
Exporting audio simultaneously can also be transmitted on test load and output voltage via Audio Signal Processing/routing circuit
It is shown on ammeter, convenient for users to observing current broadcast machine output state.When user, which issues, to be instructed, Audio Signal Processing/
Specified input source of sound can also can also be routed to ARM in output audio dubbing to monitoring circuit by route test circuit
On the recording circuit of processor, convenient for users to monitoring current broadcast content and recording specified input audio.
It further include power-supply system, the power-supply system includes power switching module, silicon rectification bridge module, power-supply filter mould
The input terminal of block and isolated power supply module, the power switching module accesses train power bus, the power switching module
Input terminal is also connected with fuse, and the output end of the power switching module connects the input terminal of the silicon rectification bridge module, institute
The output end for stating silicon rectification bridge module connects the power-supply filter module, and the output end of the power-supply filter module connects institute
State the input terminal of main board system, the ARM central control system and the power amplification system, the output of the power-supply filter module
End connects the input terminal of the isolated power supply module, is respectively arranged in the main board system and the ARM central control system
Motherboard power supply conversion module and the center ARM controling power conversion module, the motherboard power supply conversion module and the center ARM control
The input terminal of power conversion module processed connects the output end of the isolated power supply module, the motherboard power supply conversion module and described
The center ARM controling power conversion module includes 3.3V power conversion module, 5V power conversion module and 12V power supply modulus of conversion
Block exports different voltage according to different circuits and different components.
From the 48V voltage of train 48V power input, from binding post one by one after fuse, power switch, using
After silicon rectification bridge, source filter etc., at the lower DC power supply of noise.Silicon rectification bridge is utilized for power supply reverse connection protection processing
The unidirectional characteristic of silicon diode, it is ensured that the 48V voltage of input terminal after mistake reversal connection, will not be damaged in speech amplifier device and right
Train 48V power bus has an impact.48V passes through after power-supply filter, is sent to the active and standby power amplifier mould for needing high voltage respectively
The parts such as block, ARM central control system and main board system.48V voltage is after feeding, only isolated power supply module, by 48V high pressure
Be changed into single 12V power supply, due to some electronic components in main board system and ARM central control system etc. need it is lower
The voltages such as 5V, 3.3V are also provided with corresponding DC-DC conversion circuit, by 12V in main board system and ARM central control system
Power supply is converted to 7.4V power supply used in different voltages and wireless transport module required on each plate.
Broadcasting for train host system using function modoularization design, may be implemented satellite positioning call out the stops+inertial navigation positioning
Call out the stops+time calls out the stops mode multimode twin shaft conversion function；Have the function of that automatic speech is called out the stops；It is prejudged with Train delay and automatic
Voice broadcast function；Have the function of that temporary parking determines simultaneously automatic information broadcast；With each station coordinate points of automatic collection approach
Function；Have the function of to calibrate station coordinate points under vehicle；Have the function of that speech amplifier interface display is currently called out the stops the mode of navigating；Speech amplifier
Uplink and downlink automatic switching function；Broadcast host supports GPRS function, i.e., reserved 4G card interface；Speech amplifier timed power on/off simultaneously passes through
Voice passes to hand-held set；Priority：Hand-held set operation=equipment mouth broadcasts > temporary parking > co-ordinates of satellite > frequency modulation broadcasting；Preferentially
Grade interrupts, and the program interrupted can connect casting；With the long-range mouth multicast function of hand-held set；It is broadcast with the long-range control entries of hand-held set
It reports achievement energy；Remote handset switching on and shutting down, on-off state is with voice mode registration train chief hand-held set " equipment machine open/close "；
Speech amplifier breaks down, and with voice mode sends train chief's hand platform for failure and reports achievement and put failure, and can before receiving confirmation
It is lasting to send, while realizing active and standby power amplifier switching；Train chief's hand-held set, which receives, confirms receipt function by hand-held set after fault alarm
Energy；Remote handset controls train casting content uplink and downlink switching；The information such as power-off, crash and each unit failure occur for speech amplifier
It is transmitted to hand-held set.
The present invention provides a kind of method for train broadcasting system, after broadcasting for train host system breaks down, in time
Transmission alarm signal to hand terminal system, alarm signal is alarmed in a manner of voice broadcast from hand terminal system,
Staff is set timely to find alarm condition.Also, it is only carried out as staff in this one end of hand terminal system true
After recognizing operation, broadcasting for train host system just can stop alarm signal transmission, otherwise, then always send alarm signal to hold
Terminal system prevents omission to be delayed the emergency processing time, improves until staff has found alarm condition
The efficiency that attendant deals with urgent work.
According to the satellite navigation and positioning data of lasting acquisition, train present position can be known in real time.Work as train
When in the position that can not receive satellite navigation and positioning data, according to the acceleration information persistently got, inertial navigation is then utilized
Technology and acceleration calculation method calculate an inertial navigation location data, using inertial positioning data at this time as current train position
It sets, judges whether consistent with the station data of storage, corresponding casting voice is then transferred when consistent and is broadcasted, whole process does not need
Manual operation realizes digitlization automated voice broadcast.Train broadcasting system real-time perfoming detection, judge whether occur short circuit,
The failures such as overcurrent amplify processing to analog audio signal by main power amplifier module if not breaking down, if breaking down,
Then switch main power amplifier module, changes and analog audio signal is amplified by standby power amplifier module, will not influence the normal operation of system.
The present invention provides a kind of digital broadcasting system on train, and after broadcast host system electrification, broadcast host system is silent
Recognize and calls out the stops mode automatically into satellite.Broadcast host system reads the configuration file pre-set, and according in configuration file
Content each system in broadcast host system and module are configured, configuration complete after enter automatic broadcasting state.BDS/GPS
Bimodulus active antenna receives the located in connection data and information that satellite is sent, GPS/BDS+MEMS dual system integrated navigation module
Located in connection data and information are transferred to the arm processor of broadcast host system, arm processor judges train institute according to data
In position, then according to train position, arm processor transfers corresponding digital audio and video signals from memory module, at ARM
It manages device and the digital audio and video signals taken out is transferred to audio system, treated that audio signal passes through column by audio system
The loudspeaker in vehicle broadcast audio bus transfer to each compartment plays out.When no navigation signal, inertial navigator and speed
Sensor is using inertial navigation technique and acceleration calculation method is combined to prejudge the coordinate of train, while transferring data to the ARM
Processor is handled, and arm processor transfers corresponding digital audio and video signals, ARM according to the result of processing from memory module
The digital audio and video signals taken out are transferred to audio system by processor, and by audio system, treated that audio signal passes through
The loudspeaker that broadcasting for train audio-frequency bus is transferred to each compartment plays out.
In automatic broadcasting process, speech amplifier host system can automatically switch various broadcast modes according to operating condition, or
It is instructed according to operator, the operation such as switches various broadcast modes, broadcasted and manually broadcasted manually.In whole process, broadcast
Host system is in addition to that during train operation, can be not required to other than setup phase needs staff to carry out necessary setting in advance
Manual intervention is wanted, broadcast host system voluntarily judges broadcast requests and carries out alignment processing.
Hand terminal system issues instruction and is transferred to wireless communication system, after wireless communication system receives instruction, by it
Mainboard MCU and arm processor are fed back to, arm processor transfers corresponding digital audio and video signals according to the instruction that feedback obtains, so
After be transferred to audio system and broadcasted.The present invention can remotely operate, and be greatly reduced manually by information-based means
Intervention, broadcast host system can be studied and judged independently, autonomous action, independently be disposed, in completely new, efficient, safe operation work
In scene, more convenient, accurate information is provided for passenger.The starting that can be convenient by hand terminal system attendant and pass
Broadcasting for train host system is closed, and the position for not needing to go to broadcast host can easily get information.Train chief
Management attendant can be more convenient by main handheld terminal, it is known that the working condition of attendant.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. the method for being used for train broadcasting system, including when system failure, broadcasting for train host system sends alarm signal
To the method for hand terminal system, it is characterised in that：
Feedback signal is obtained, judges that system is in abnormal condition by feedback signal；
The alarm voice digital audio and video signals of storage are transferred as alarm signal；
Output control signal establishes wireless telecommunications；
Alarm voice digital audio and video signals are converted into wireless audio signal and are transferred out；
The wireless audio signal that transmission comes will be received to be decoded and be converted to alarm voice digital audio and video signals；
Alarm voice digital audio and video signals are converted into alarm voice analog audio signal to export；
If acknowledging receipt of alarm signal, confirmation feedback signal, the transmission of stop alarm signal are sent；
If unconfirmed receive alarm signal, confirmation feedback signal is not received, persistently carries out the transmission of alarm signal.
2. the method for being used for train broadcasting system as described in claim 1, including when system failure, broadcasting for train host
System sends alarm signal to the method for hand terminal system, it is characterised in that：
Receive power amplifier failure alarm signal；
Confirmation receives, and sends confirmation feedback signal；
It receives confirmation feedback signal and stops the transmission of power amplifier failure alarm signal；
Output control signal realizes the switching of spare power amplifier.
3. the method for being used for train broadcasting system as claimed in claim 2, the secondary handheld terminal including several attendants
The method that unlatching/closing sends a signal to the main handheld terminal of train chief, it is characterised in that：
When secondary handheld terminal is opened：
Secondary handheld terminal and the broadcasting for train host system establish wireless telecommunications；
Secondary handheld terminal sends enabling signal；
Corresponding casting digital audio and video signals are transferred after receiving enabling signal；
Main handheld terminal is sent by corresponding casting digital audio and video signals；
It receives corresponding casting digital audio and video signals and is converted into casting analog audio signal and exported；
When secondary handheld terminal is closed：
Secondary handheld terminal sends shutdown signal, and disconnects the wireless telecommunications with the broadcasting for train host system；
It transfers corresponding casting digital audio and video signals and is sent to main handheld terminal；
It receives corresponding casting digital audio and video signals and is converted into casting analog audio signal and exported.
4. the method for being used for train broadcasting system as claimed in claim 3, including hand terminal system control broadcasting for train master
The method of machine system on/off, it is characterised in that：
When broadcasting for train host system is in off-mode：
It sends activation instruction and establishes wireless telecommunications；
Activation instruction is received to start to start and feed back activation signal；
Activation signal is received, starts to send control instruction；
When broadcasting for train host system is in open state：
Send out code；
Reception out code, which stops working and feeds back, is turned off signal；
Reception is turned off signal, disconnection of wireless communication.
5. the method for being used for train broadcasting system as claimed in claim 4, is broadcasted automatically including broadcasting for train host system
Method, it is characterised in that：
Satellite navigation and positioning data are obtained, oplimal Location data are screened；
Acceleration information is obtained, calculates inertial navigation location data using inertial navigation technique and acceleration calculation method；
The station data for obtaining storage, location data and inertial navigation location data are compared with station data；
The website for transferring storage is called out the stops digital audio and video signals；
Website digital audio and video signals of calling out the stops are converted into website and call out the stops analog audio signal；
Website analog audio signal of calling out the stops is exported after power amplification.
6. a kind of digital broadcasting system on train, it is characterised in that：Including broadcasting for train host system and hand terminal system, institute
Stating broadcast host system includes main board system and ARM central control system, the main board system and the ARM central control system
Between be electrically connected, the hand terminal system includes main handheld terminal and several secondary handheld terminals；
The main board system includes mainboard MCU, and the ARM central control system includes arm processor, the mainboard MCU and institute
It states and is electrically connected between arm processor, the mainboard MCU and the arm processor are responsible for each module and each electricity in control system
Complete corresponding function in road；
The main board system further includes the alarm voice module and wireless transport module with mainboard MCU electric connection, described
Wireless transport module is used to the control signal that the mainboard MCU and the arm processor issue being sent to the handheld terminal
System, and receive the signal that the handheld terminal is sent；
The main board system further includes the power amplification system being electrically connected with the mainboard MCU, and the power amplification system includes main power amplifier
Module, standby power amplifier module and output switching module, the main power amplifier module and the standby power amplifier module are connected in parallel on the mainboard MCU
Between the output switching module, the input terminal of the output switching module connects the mainboard MCU；
The main board system further includes navigation system, is electrically connected between the navigation system and the mainboard MCU, the navigation
System includes the bis- navigation system of BDS/GPS and inertial navigation system；
The main board system further includes audio system, and the audio system is used to receive and process inside and outside audio signal,
The audio system is broadcasted the loudspeaker in audio signal transmission to each compartment by broadcasting for train audio-frequency bus.
7. such as claim, digital broadcasting system on train described in 6, it is characterised in that：The bis- navigation system packets of BDS/GPS
Data sink is included, the data sink is used to receive the location data that satellite is sent and is sent at the ARM
Manage device.
8. digital broadcasting system on train as claimed in claim 6, it is characterised in that：The audio system includes audio signal
Processing/routing module control is electrically connected between the Audio Signal Processing/routing module control and the mainboard MCU, described
Audio Signal Processing/routing module control connects the arm processor by audio conversion module, and the Audio Signal Processing/
The analog audio signal that routing module control transmission comes becomes digital audio and video signals after audio conversion module, at the ARM
The digital audio and video signals that reason device receives after the audio conversion module conversion are stored, the number of the arm processor storage
Audio signal becomes analog audio signal after audio conversion module, and the Audio Signal Processing/routing module control receives
The module and circuit that analog audio signal and being transferred to after conversion module conversion needs audio signal to input.
9. digital broadcasting system on train as claimed in claim 6, it is characterised in that：The main board system further includes external words
Cylinder mould block, built-in microphone module, radio receiver module and route input module, the External micro phone module, built-in microphone module, receipts
Sound machine module and the audio signal of route input module input are input to the Audio Signal Processing/routing module control, by
It is exported after the Audio Signal Processing/routing module control processing.
10. digital broadcasting system on train as claimed in claim 6, it is characterised in that：It further include power-supply system, the power supply
System includes power switching module, silicon rectification bridge module, power-supply filter module and isolated power supply module, the power switch mould
The input terminal of block accesses train power bus, and the input terminal of the power switching module is also connected with fuse, and the power supply is opened
The output end for closing module connects the input terminal of the silicon rectification bridge module, and the output end of the silicon rectification bridge module connects the electricity
Source filter module, the output end of the power-supply filter module connect the main board system, the ARM central control system and
The input terminal of the power amplification system, the output end of the power-supply filter module connect the input terminal of the isolated power supply module,
Motherboard power supply conversion module and the center ARM control electricity are respectively arranged on the main board system and the ARM central control system
Source conversion module, described in the motherboard power supply conversion module is connected with the input terminal of the center ARM controling power conversion module
The output end of isolated power supply module, the motherboard power supply conversion module and the center ARM controling power conversion module include
3.3V power conversion module, 5V power conversion module and 12V power conversion module are exported according to different circuits and different components
Different voltage.
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| CN201811155631.5A CN108900270A (en) | 2018-09-29 | 2018-09-29 | Method and digital broadcasting system on train for train broadcasting system |
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|---|---|---|---|
| CN201811155631.5A CN108900270A (en) | 2018-09-29 | 2018-09-29 | Method and digital broadcasting system on train for train broadcasting system |
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| CN114003046A (en) * | 2021-12-30 | 2022-02-01 | 智道网联科技(北京)有限公司 | Positioning circuit supporting debugging, debugging control method, electronic device and vehicle |
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