CN205986959U - Speech control system in distributing type speed car - Google Patents

Abstract

The utility model discloses a speech control system in distributing type speed car, including IC interface control box, operator control box, hand -held type control box and speaker, the IC interface control box is provided with net gape, local call mouth, wired mouth, radio station mouth, raise one's voice mouth and USB mouth, the net gape of IC interface control box passes through the bus cable and is connected with the operator control box, the mouth of raising one's voice of IC interface control box is connected with the speaker through the cable of raising one's voice, install the USB memory in the IC interface control box, the operator control box is connected with the earphone microphone. The utility model discloses a no central network deployment communication technology of distributing type has strengthened the survivability of system, has improved the reliability of system, the conversation function is abundant. In the system possesses abundant car, under the car, car border conversation function, communication bandwidth height, expansibility are good: the system provides gigabit ethernet high -speed communication function, and the generalization design degree is high, has improved the commonality and the maintainability of system, a large amount of uses of general simultaneously also greatly reduced the cost.

Description

Distributed type high speed in-car speech control system

Technical field

This utility model be related to technical field of communication equipment and in particular to a kind of distributed type high speed in-car Voice command system System.

Background technology

In-car voice communication is that proprietary vehicle provides the platform of call data communication for passenger, and general employing is concentrated Formula or distributed Telecommunication network.Using constructing communication network medium have CAN, ARCNET bus, industry ethernet etc., Speed is generally below 100Mbps and it is necessary to setting host node just can complete the information exchange between each control unit.As one kind Digital Communication System, is using ARCNET bus communication, 10Mbps bus bandwidth, supports multichannel occupant call, support Radio station call function, has center networking mode using distributed.Existing similar system typically adopts centerized fusion, centralized Control the control mode referring to " Centroid+incoming end ".Multiple interfaces are drawn by " Centroid " and connect " incoming end ", Respectively the data of " incoming end ", signaling, voice etc. all swap control by " Centroid ".Because control task is excessively concentrated, Lead to that " Centroid " load is heavier, real-time is poor；And all of cable all need to be drawn from " Centroid ", cloth cable excessively collects In, wiring is complicated, difficult in maintenance；When " Centroid " fault, other incoming ends all cannot work, and survivability is poor.

In sum, in-car voice communication product Vehicles Collected from Market appearing on the market suffers from the drawback that：

1）General using there being center networking, capability to resist destruction is poor, and center control nodes break down and will lead to whole system paralysis Paralysis；

2）Traffic rate is not high, and real-time is low, such as only has 1Mbps bandwidth using CAN communication, using ARCNET bus Only 10Mbps bandwidth, only has 100Mbps using EPA bus communication, when system bearing other multimedia service is as schemed When picture, video streaming, will appear from the not enough situation of bandwidth；

3）Call function is more single, and the business interface type of support is less, typically only has in-car call and radio station call Function, less prod possesses sound-recording function；

4）Structural style is various, and interchangeability is poor, is unfavorable for maintenance and the maintenance of product.

Utility model content

For problem above, this utility model provides a kind of in-car at a high speed speech control system, complete by higher bandwidth Become transmission and the exchange of multimedia service, there is stronger survivability energy, can be led to by the means of communication such as wired, radio station and the external world Letter, call is carried out recording formation recording file and is played back, and arrive a kind of framework by unified for multiple mounting modes Under, the demand that system is installed is met by cutting out of part.

This utility model employs the following technical solutions realizes above-mentioned purpose.Distributed type high speed in-car speech control system, bag Include Interface Controller box, operator's control box, hand-held control box and speaker, described Interface Controller box is provided with network interface, local telephone network Mouth, wired mouth, radio station mouth, mouth of raising one's voice, USB port and power port, and network interface, local telephone network mouth and radio station mouth all with accompanying test product corresponding even Connect；The network interface of described Interface Controller box is connected with operator's control box by bus cable, wired mouth of described Interface Controller box By raising one's voice, cable is connected with speaker；In described Interface Controller box, USB storage is installed；Described operator's control box connects There is earphone microphone；Wired mouth of Interface Controller box is connected with hand-held control box by covered wire.

Further, be provided with described Interface Controller box core processing module, Logic control module, bus interface module, External wire interface module, wired interface module, local telephone network interface module, recording memory module, test interface module, Audio interface block With interface module of raising one's voice；Core processing module is connected in parallel to Logic control module, EBI mould by Internal Control Bus IBC Block, wired interface module and recording memory module；Core processing module is connected with test interface module by UART mouth；At core Reason module has external wire interface module by RGMII network interface connection；Logic control module is connected in parallel to outside line by pcm bus and connects Mouth module, local telephone network interface module, Audio interface block and interface module of raising one's voice.

Further, the network interface of described Interface Controller box also with communication network control equipment and the Ethernet exchanging accompanied in test product Machine connects, and converses for outside line and controls.

Further, the local telephone network mouth of described Interface Controller box is connected with accompanying the wiring windows in test product by covered wire, wiring windows It is connected with telephone exchange and hand-held control box respectively, converse under local telephone network call and car.

Further, the radio station mouth of described Interface Controller box is used for connecting the radio station accompanied in test product, for external wireless communication.

Further, the USB port of described Interface Controller box is used for exporting and copies recording file.

Further, the power port of described Interface Controller box connects 18V～30V DC source, for system power supply.

Further, described operator's control box is wall-mounted or embedded.

Further, the remote voltage supplied of described hand-held control box is 36V～48V, and communication distance is 300m～500m.

This utility model completes constructing communication network using embedded communication processor as control core, phonetic function controls, Bus data is received and dispatched；In-car speech control system software is based primarily upon (SuSE) Linux OS and completes, using C language as programming Language, is merged using code stream conversion, time gas exchange and the meeting-place that digital signal processor completes voice；Using FPGA electricity Road completes generation and the logic control function of various clock signals；The voice of audio interface collection is through interface impedance coupling and level Conversion, completes encoding and decoding speech by special IC, the voice data after digitized gives dsp processor by pcm bus, The operational order being inputted according to man machine interface by communication processor is by voice and control information group bag, and is received and dispatched by bus and control Realize the data interaction of each control box.

Each constitute subsystem by multiple control box, maintained close ties with by communication network between each subsystem and believe Breath exchanges.System is synthesized and coordinated to overall goal and task and is distributed.Compare traditional centerized fusion, distributed AC servo system All there is significant technological improvement in integral system structure and details framework：Distributed AC servo system is by share tasks to each control Box, task is simply clear and definite；Each control box independent process each task, system real time is good；Cloth cable is simple, saves wire rod, reduces Wiring complexity and system cost；Arbitrarily control box fault, other control box may continue to work, and survivability is good, and system is reliable Property high.

In design, employ distributed control mode, inherit the associated advantages of dcs.Interface Controller Box and each operator's control box are separately formed subsystem, complete independently each function, pass through bus bar between each control box, complete Become information exchange.In communication, each operator's control box identity is identical, only imparts different power because functional requirement is different Limit.

Using gigabit Ethernet as communications platform, there is transmission and the exchange that higher bandwidth completes multimedia service； Using non-stop layer networking mode, there is stronger survivability energy, single node failure does not constitute big to system-wide normal operation Impact；System has abundant business interface, using multiple in-car, car border call control modes, can be by wired, wireless etc. Means of communication communication with the outside world；Call can be carried out recording and form recording file by system, and recording file can be played back； System has taken into full account the in-car multiple installation requirements of node device, arrives a kind of framework by unified for multiple mounting modes Under, the demand that system is installed is met by cutting out of part.

The utility model has the advantages that：

1）Reliability is high：By distributed non-stop layer group-net communication technology, strengthen the survivability of system, improve system Reliability；Call function enriches；

2）By means of communication such as wired, radio station, system possess abundant in-car, under car, car border call function, to user Complete call experience is provided；

3）Communication bandwidth is high, favorable expandability：System provides gigabit Ethernet high-speed communication function, is the extension of future feature Provide the bandwidth resources of abundance；

4）Using substantial amounts of modularity design technology, General design degree is high：Circuit design adopts core processing module Plus the form design of business board, using Software Component Design technology, structure is using the design side of embedded and wall-mounted one for software Formula, improves versatility and the maintainability of system, and a large amount of use of general part has been greatly reduced cost simultaneously.

Brief description

Fig. 1 system of the present utility model connection diagram；

Fig. 2 is Interface Controller kit function module annexation figure in this utility model.

Specific embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.Design principle of the present utility model：Car Interior speech control system adopts distributed, acentric design principle, and system is not provided with main control node, by high-speed communication network Each node device is linked together and completes information exchange by network；Node device circuit design adds business using core processing module The mode of plate completes；Software design adopts the design philosophy of componentization, by being mutually combined of the software component of functional independence Become software function；Structure design takes into full account the demand of versatility and interchangeability, will be unified removable to one kind for multiple installation forms On the configuration dividing, thus realizing " a machine multiform a, type is multiplex ".

Referring to Fig. 1 and Fig. 2, distributed type high speed in-car speech control system, including Interface Controller box 1, operator's control box 2nd, hand-held control box 3 and speaker 4, Interface Controller box 1 be provided with network interface, local telephone network mouth, wired mouth, radio station mouth, mouth of raising one's voice, USB port and power port, and the corresponding connection all with accompanying test product 5 of network interface, local telephone network mouth and radio station mouth；The network interface of described Interface Controller box 1 It is connected with operator's control box 2 by bus cable, wired mouth of described Interface Controller box 1 is by cable and the speaker 4 of raising one's voice Connect；In described Interface Controller box 1, USB storage is installed；Described operator's control box 2 is connected with earphone microphone 11；Interface Wired mouth of control box 1 is connected with hand-held control box 3 by covered wire.

Test product 5 is accompanied to include：Wiring windows 7, telephone exchange 8, radio station 6, communication network control equipment 9 and Ethernet exchanging Machine 10.The network interface of Interface Controller box 1 is also connected with the communication network control equipment 9 accompanied in test product 5 and Ethernet switch 10, uses Converse in outside line and control.The local telephone network mouth of Interface Controller box 1 is connected with the wiring windows 7 accompanied in test product 5 by covered wire, wiring windows 7 It is connected with telephone exchange 8 and hand-held control box 3 respectively, converse under local telephone network call and car.The radio station of Interface Controller box 1 For connecting the radio station 6 accompanied in test product 5, described radio station 6 is shortwave or ultrashort wave radio set to mouth, for external wireless communication.Interface The USB port of control box 1 is used for exporting and copies recording file.The power port of Interface Controller box 1 connects 18V～30V DC source, For system power supply.Operator's control box 2 is wall-mounted or embedded.The remote voltage supplied of hand-held control box 3 is 36V～48V, leads to Communication distance is 300m～500m.

Distributed in-car speech control system structure composition, is shown in as following table：

Sequence number	Name of product	Quantity	Remarks
				1	Interface Controller box	1	External communication interface is provided
2	Operator's control box	Apolegamy, 1-9 platform	Complete in-car networking and occupant's call function
				3	Hand-held control box	1	Complete in-car speech control system call function under occupant
4	Speaker	1	Complete loud-speaking function of conversing
				5	Headset group	Apolegamy, 1-9 covers	For conversing
6	USB storage	1	Recording data preserves
				7	Connection cables	1 set	Complete apparatus interconnection

Distributed in-car speech control system adopts distributed AC servo system architecture, and each control box is passed through to meet IEEE802.3 STD bus connects, and each node carries out data sharing by bus.Interface circuit adopts isolated bus transmitting-receiving control Device processed, when any control box breaks down, does not affect the proper communication between other control box, has preferable survivability. Each control box annexation is as shown in Figure 1.

The G.711 voice coding modes that distributed in-car speech control system adopts International Telecommunication Union to formulate, with communication Controller speech-encoded format is consistent, and decreases the conversion times of voice coding it is ensured that speech quality.Interface Controller box 1 passes through network interface connection communication controler, completes outside line call control function；Interface Controller box 1 passes through local telephone network mouth and telephone exchange Machine 8 connects, and dial mode meets GB/T15279-2002《Automatic telephone technical conditions》The correlation of middle dialogue machine dialing features Require.Interface Controller box 1 is connected with hand-held control box 3 by wired mouth, completes call function under car；Interface Controller box 1 sets In respect of raising one's voice, mouth is connected with speaker 4, completes in-car broadcast capability；The recording file of Interface Controller box 1 storage can pass through USB port Copy out, and can play on computer terminals and retrieve.

Distributed in-car speech control system adopt embedded communication processor as control core, complete constructing communication network, Phonetic function controls, bus data transmitting-receiving；Complete code stream conversion, time gas exchange and the meeting-place of voice using digital signal processor Merge；Complete generation and the logic control function of various clock signals using Programmable Logic Device.The language of audio interface collection Sound, through interface impedance coupling and level translation, completes encoding and decoding speech by special IC, and the voice data after digitized leads to Cross pcm bus and give dsp processor, the operational order being inputted according to man machine interface by communication processor is by voice and control information Group bag, and the data interaction of each control box of control realization is received and dispatched by bus.

Be divided into inside Interface Controller box 1 core processing module 101, Logic control module 102, bus interface module 103, External wire interface module 104, wired interface module 105, local telephone network interface module 106, recording memory module 107, test interface module 108th, Audio interface block 109, interface module of raising one's voice 110.Each module composition and annexation are as shown in Figure 2.Core processing mould Block 101 connects Logic control module 102, bus interface module 103, wired interface module by Internal Control Bus IBC parallel way 105 and recording memory module 107；Core processing module 101 passes through UART mouth connecting test interface module 108；Core processing mould Block 101 passes through RGMII network interface connection external wire interface module 104；Logic control module 102 is connected by pcm bus parallel way Core processing module 101, external wire interface module 104, local telephone network interface module 106, Audio interface block 109, interface module of raising one's voice 110.

Interface Controller box 1 hardware of the present utility model includes Interface Controller box 1 business board.

Interface Controller box 1 business board is designed with CPU minimum unit, DSP etc..CPU adopts ARM9G45 processor, and it is one Money multipurpose, high-performance, 32 bit walk processors of low-power consumption, dominant frequency is 400MHz, and outer frequency is 133MHz, and DSP adopts TI public The TMS320VC5509 of department, its performance is higher, low in energy consumption, small volume, meets the demands such as speech processes, meeting fusion.Processor Clamp carries 256MB DDR2 SDRAM, 16MB NOR Flash.Its peripheral interface and function have：

1）Gigabit Ethernet exchange chip BCM53115 is connected by RGMII interface, draws four gigabit Ethernet mouths, One is used for connection communication net control device 9, and one is used for connecting the network switch, and it is total that two other is reserved for Ethernet Line；

2）It is connected with ARCNET controller COM20022 by Local Bus, build ARCNET bus；

3）FPGA is connected to by PCM mouth（EP3C10E144I7N）, FPGA completes time slot distribution, through 1 mould of PCM mouth multiple connection Intend repeat circuit and three audio interface circuit, complete voice and signalling communication.Analog junction and audio interface compile solution by audio frequency Code chips W 681310 and corresponding peripheral circuit composition.Analog junction connects program controlled telephone switching network, and three audio interface connect respectively Speaker 4, wear and radio station 6；

4）It is connected with wired mouthful of interface module by Local Bus, complete Interface Controller box 1 and hand-held control box 3 Data, Speech Communication；

5）It is connected with USB interface chip CH375B by Local Bus, through USB2.0 interface, output storage of recording is arrived USB storage；

6）It is connected with FPGA by Local Bus, the internal register of read-write FPGA, export phase through FPGA internal logic Induction signal, is connected to key and shows on plate interface, thus the state of display lamp in addition to power lights, key backlight lamp on the aobvious plate of control key State and the required display of display screen character.And receive key shows the signal that plate sends through FPGA, and according to key information Complete to operate accordingly.

Wired mouthful of interface circuit is made up of protocol controller PT7A8952J and interface chip MT9172.

Test interface completes the conversion of RS-232 level and Transistor-Transistor Logic level by integrated circuit MAX3232, and is connected to On the serial ports 1 of ARM9G45, car can be led to by this serial ports carry out testing, monitor, software upgrading.

The power port input voltage of Interface Controller box 1 is DC 18V～30V, through overvoltage/over-current protection device（Transient voltage Suppression diode 1.5KE36A provides overvoltage protection, resettable fuse RUE600 the input power total to system for input power Carry out overcurrent protection）, it is connected to bus port, powers to operator's control box 2, and be input to DC/DC insulating power supply module WKD20-24S05 switchs to 5V, powers to the interlock circuit on business board.5V voltage through two TPS51124 switch to 1V, 1.8V, 2.5V, 3.3V, power to interlock circuit on plate.

Interface Controller box 1 input voltage exports DC48V through DC/DC voltage stabilizing, is superimposed upon wired mouth after overvoltage, overcurrent protection On signal, remote power-feeding, communication distance 500m are carried out to hand-held control box 3.

It is divided into core processing module, Logic control module, bus interface module, the aobvious mould of key inside operator's control box 2 Block, test interface module, Audio interface block.Operator's control box 2 external interface has：Two, bus mouth, audio port one；Interior Portion's interface has：Processor parallel bus LC-BUS interface, voice digital bus pcm interface, I/O interface etc..

Operator's control box 2 hardware includes operator's control box business board, key shows plate.

Operator's control box 2 can be cut out by structure member on a kind of structural box realize wall mounting structure and Flush type mounting structure.Operator's control box 2 operation principle is identical with Interface Controller box 1, and only interface quantity is than Interface Controller box 1 Few.

Hand-held control box 3 has access in radio control, Call- Control1, parameter setting, status poll, test maintaining work( Energy.Core processing module, Logic control module, wired interface module, key aobvious module, test will be divided into according to function inside it Interface module, Audio interface block.

Hand-held control box 3 hardware includes handhold box business board, keypad.

Handhold box business sheet processor adopts low-power consumption, low cost, high reliability, strong antistatic, the monolithic of strong anti-interference Machine LPC2388, its maximum clock frequency is 80MHz, is internally integrated 512K Flash program memorizer, the RAM data of 32KByte Memorizer.

Processor is connected with display screen by Local Bus, the character of the required display of control display screen.And pass through I/O foot Being connected with display lamp, button, thus controlling display lamp, key backlight lamp, reading key assignments.

The wired K mouth interface circuit of hand-held control box 3 is by HDLC protocol controller PT7A8952J and interface chip MT9172 Composition.Processor is linked up by the signaling that Local Bus completes wired K mouth.Speech is delivered to by the ST-BUS interface of MT9172 CPLD, carries out through CPLD delivering in audio interface circuit after time slot tap process, is reduced into analogue signal, and carries out necessary putting Greatly, deliver to handle.The voice signal that audio interface circuit delivered to by same handle is encoded and forms pcm stream, is then sent through CPLD Carry out switching and deliver to MT9172, sent by wireline interface afterwards.

Test interface completes the conversion of RS-232 level and Transistor-Transistor Logic level by integrated circuit MAX3232, and is connected to On the serial ports of STC89LE51, the test to hand-held control box 3 is completed by corresponding instruction.

Interface Controller box 1 suppresses through self- recoverage protective tube RUE160, transient voltage through the Remote Power Supply that wireline interface is sent The overvoltage of diode 1.5KE36A composition, after current foldback circuit, power conversion is completed by PTH08T230,5V after conversion, 3.3V uses for interlock circuit on plate.

The function of speaker 4 is the in-car speech of broadcast.Speaker 4 peak power output is not less than 1W, and clear sound can be understood.

In-car speech control system software is based primarily upon (SuSE) Linux OS and completes, using C language as programming language. In-car speech control system software is made up of embedded software part and application software part.Application software part is by independent language Sound playout software forms, and completes retrieval and the broadcasting of recording data, operates in WINDOWS operating system environment.

In-car speech control system software mainly realizes in-car call, outside line call, in-car broadcast, recording, test maintaining With networking function.

According to in-car speech control system structure installation requirements, Interface Controller box 1 is mainly disposed in rack, its installation side Formula is installed for rack；Operator's control box 2 is mainly disposed at indication control board, driving cabin, and its mounting means is installation by adhering, wall hanging Formula is installed；Speaker 4 mounting means is in-wall mounting；Hand-held control box 3 is main to be used when getting off, and can be mounted on operation Carried on member's upper arm pocket or low back belt.

According to the demand, distributed in-car speech control system structure design main points are as follows：

a）Operator's control box 2 needs compatible driving cabin wall hanging to install and indication control board embeds and installs two ways；

b）Control box panel need to have simultaneously key show and two kinds of modes of operation of knob, key show off one's talent or competence complete all using operation And parameter setting, status poll etc., knob complete convenient using operation；

c）Hand-held control box 3 needs small volume and less weight, is easy to carry.

Feature of the present utility model：

1st, distributed, non-stop layer, two-forty constructing communication network design:

In-car speech control system adopts distributed architectural framework design, each control box distribution each difference in the car Operating position, through-rate links together for 1000Mbps Fast Ethernet bus and completes information exchange, system Bu She center Control node, has stronger survivability, and the fault of arbitrary node does not all affect the basic call function of system.

2nd, there is abundant call control function, support occupant's maximum nine side's conference calls：

In-car speech control system is supported to group busy, individual calling, group are exhaled, exhale by force, monitoring, call forwarding, External Call, radio station are exhaled Cry, local telephone network call function, support passenger maximum nine side's conference calls, meet user's multiple call demand.

3rd, recording, playback and recording data copy function are supported：

Call recording/playing function can real time record in-car call sound, be easy to the preservation of field data.In-car voice control System processed supports the outer calling record of the in-car of occupant, car and player function, can derive recording data by USB flash disk, by meter Calculation machine dedicated voice playout software plays out.

4th, the software design technology of componentization, flexibly the assembling of achievable function are adopted：

In-car speech control system adopts the software design technology of componentization, and each software function module is abstracted into by system The software component of functional independence, software component externally provides Message Call Interface, by component between be mutually combined completion system Function.Design the upgrade maintenance to software system to bring great convenience using component-based software, have that " fault is easily looked into, code The advantages of understandable, easy care ".

5th, the multiservice interfaces such as radio station mouth, local telephone network mouth, wired mouth, Ethernet interface, USB port are supported.

In-car speech control system supports that audio port is used for completing in-car call function, supports that radio station mouth is used for completing radio station 6 call functions, support that local telephone network mouth is used for completing local telephone network call function, support that wired mouth is used for completing call function under car, support Ethernet interface is used for bus data communication data and exchanges, and supports that serial ports is used for debugging function, supports that USB port is used for recording data Copy function.

6th, miniaturization, lightweight, unitized structure member design technology：

System adopts miniaturization, lightweight, unitized mentality of designing, operator's control box 2 is designed to take into account embedded Formula and wall-mounted two kinds of installation forms, hand-held control box 3 is designed to support built-in call and external call two ways simultaneously.

Claims (9)

1. distributed type high speed in-car speech control system, including Interface Controller box, operator's control box, hand-held control box with raise Sound device it is characterised in that described Interface Controller box be provided with network interface, local telephone network mouth, wired mouth, radio station mouth, mouth of raising one's voice, USB port and Power port, and the corresponding connection all with accompanying test product of network interface, local telephone network mouth and radio station mouth；The network interface of described Interface Controller box is by bus electricity Cable is connected with operator's control box, and wired mouth of described Interface Controller box is connected with speaker by cable of raising one's voice；Described interface USB storage is installed in control box；Described operator's control box is connected with earphone microphone；Wired mouth of Interface Controller box passes through Covered wire is connected with hand-held control box.

2. distributed type high speed according to claim 1 in-car speech control system is it is characterised in that described Interface Controller box Inside it is provided with core processing module, Logic control module, bus interface module, external wire interface module, wired interface module, local telephone network Interface module, recording memory module, test interface module, Audio interface block and interface module of raising one's voice；Core processing module is led to Cross Internal Control Bus IBC and be connected in parallel to Logic control module, bus interface module, wired interface module and recording memory module； Core processing module is connected with test interface module by UART mouth；Core processing module has outside line by RGMII network interface connection Interface module；Logic control module is connected in parallel to external wire interface module, local telephone network interface module, audio interface by pcm bus Module and interface module of raising one's voice.

3. distributed type high speed according to claim 1 in-car speech control system is it is characterised in that described Interface Controller box Network interface be also connected with the communication network control equipment accompanied in test product and Ethernet switch, for outside line converse control.

4. distributed type high speed according to claim 1 in-car speech control system is it is characterised in that described Interface Controller box Local telephone network mouth be connected with accompanying the wiring windows in test product by covered wire, wiring windows respectively with telephone exchange and hand-held control box Connect, converse under local telephone network call and car.

5. distributed type high speed according to claim 1 in-car speech control system is it is characterised in that described Interface Controller box Radio station mouth be used for connecting and accompany radio station in test product, for external wireless communication.

6. distributed type high speed according to claim 1 in-car speech control system is it is characterised in that described Interface Controller box USB port be used for exporting and copy recording file.

7. distributed type high speed according to claim 1 in-car speech control system is it is characterised in that described Interface Controller box Power port connect 18V～30V DC source, for system power supply.

8. distributed type high speed in-car speech control system according to claim 1 is it is characterised in that described operator controls Box is wall-mounted or embedded.

9. distributed type high speed in-car speech control system according to claim 1 is it is characterised in that described hand-held controls The remote voltage supplied of box is 36V～48V, and communication distance is 300m～500m.