CN110290481A - Communication terminal and communication means - Google Patents
Communication terminal and communication means Download PDFInfo
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- CN110290481A CN110290481A CN201910708349.3A CN201910708349A CN110290481A CN 110290481 A CN110290481 A CN 110290481A CN 201910708349 A CN201910708349 A CN 201910708349A CN 110290481 A CN110290481 A CN 110290481A
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- 238000004891 communication Methods 0.000 title claims abstract description 80
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- 238000013461 design Methods 0.000 description 16
- 238000007726 management method Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000037361 pathway Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
Abstract
The embodiment provides a kind of communication terminal and communication means, are related to the communications field, and wherein the communication terminal includes that day leads to module, main control module and digital intercom module, and day leads to module, digital intercom module is connected with main control module respectively；Main control module leads to module by day and carries out distal end satellite communication, and main control module carries out proximal end intercom by digital intercom module.The communication terminal can form local by digital walkie-talkie in regional area and group busy by day being led to function and intercommunication function combines, information can lead to teletransmission by day after summarizing, the communication issue in the certain specific occasions of effective solution.Such as the communication terminal can satisfy the communication requirement in the area of no terrestrial network covering, widen the application scenarios of communication.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of communication terminal and communication means.
Background technique
Currently, smart phone is rapidly developed with the development of network technology, it is mutual that smart phone also becomes people
Between the important tool linked up, smart phone, which often relies on ground public network, to carry out data transmission, and completes communication；However
In certain specific occasions (such as under the occasions such as earthquake relief work, forest inspection), in the case where being covered without ground public network, depend on
The smart phone of ground public network is then unable to complete communication function.
Summary of the invention
In view of this, the purpose of the present invention includes, for example, providing a kind of communication terminal and communication means, can delay
The problem of solution depends on the smart phone of ground public network that can not communicate in specific occasion in the prior art, and application scenarios limit to.
The embodiment of the present invention this can be implemented so that
In a first aspect, the embodiment of the present invention provides a kind of communication terminal, including day leads to module, main control module and digital intercom
Module, the day leads to module, the intercommunication module is connected with the main control module respectively；
The main control module leads to module by the day and carries out distal end satellite communication, and the main control module passes through the number
Intercommunication module carries out proximal end intercom.
In alternative embodiments, the day lead to module include the exceedingly high line interface in day and with the exceedingly high line interface in the day
The exceedingly high line in the day of connection, and/or, the day leads to module and includes Beidou antenna interface and connect with the Beidou antenna interface
Beidou antenna；
The digital intercom module includes intercommunication antennal interface and the intercommunication antenna that connect with the intercommunication antennal interface；
The main control module includes main control unit and the earpiece being connected with the main control unit, loudspeaker and Mike
Wind.
In alternative embodiments, the main control unit includes the first UART interface and pcm interface, and the day leads to module
Including UART interface and pcm interface, the first UART interface of the main control unit is connected with the UART interface that the day leads to module
It connects, the pcm interface of the main control unit is connected with the pcm interface that the day leads to module.
In alternative embodiments, the main control unit includes the second UART interface, Line-out interface and Line-
In interface；The digital intercom module includes UART interface, Line-out interface and Line-in interface；The main control unit
The second UART interface be connected with the UART interface of the digital intercom module；The Line-out interface of the main control unit with
The Line-in interface of the digital intercom module is connected, the Line-in interface of the main control unit and the digital intercom mould
The Line-out interface of block is connected；
The main control unit further includes INT interface and PTT interface, and the digital intercom module includes that INT interface and PTT connect
Mouthful, the INT interface of the main control unit is connected with the INT interface of the digital intercom module, and the PTT of the main control unit connects
Mouth is connected with the PTT interface of the digital intercom module.
In alternative embodiments, the main control unit includes PWR interface, and it includes PWR interface, institute that the day, which leads to module,
The PWR interface for stating main control unit is connected with the PWR interface that the day leads to module；
The main control module further includes USB switch, and the main control unit includes USB_SW interface and USB interface, the day
Logical module includes USB interface, and the USB_SW interface, the USB interface of the main control unit and the day lead to the USB interface of module
It is connected respectively with USB switch, the USB_SW interface is used to control the USB switch in the USB of the main control unit
It is switched between the USB interface of the logical module of interface and the day.
In alternative embodiments, the main control unit includes PWD interface, and the digital intercom module includes that PWD connects
Mouthful, the PWD interface of the main control unit is connected with the PWD interface of the digital intercom module；
The digital intercom module includes jtag interface and the JTAG Program download being connected with the jtag interface.
In alternative embodiments, the main control unit includes the second reseting interface, and the digital intercom module includes
RESET interface, the second reseting interface of the main control unit are connected with the Reset interface of the digital intercom module；
The main control unit includes the first reseting interface, Sleep interface and Wakeup interface, and the day leads to module and includes
RESET interface, Sleep interface and Wakeup interface, first reseting interface are connected with the Reset interface that the day leads to module
It connects, the Sleep interface of the main control unit is connected with the Sleep interface that the day leads to module, the main control unit
Wakeup interface is connected with the Wakeup interface that the day leads to module；
The day leads to the SIM card that module further includes SIM card interface and connect with the SIM card interface.
In alternative embodiments, the main control unit includes battery management interface, and it includes that BAT connects that the day, which leads to module,
Mouthful, the digital intercom module includes BAT interface, and the day leads to the BAT interface of module, the BAT of the digital intercom module connects
Mouth is connected with the battery management interface of the main control unit respectively.
Second aspect, the embodiment of the present invention provide a kind of communication means, are applied to as described in any one of aforementioned embodiments
Communication terminal, the communication terminal includes that day leads to module, main control module and digital intercom module, and the day leads to module, described
Intercommunication module is connected with the main control module respectively, and the method is executed by the main control module；The described method includes:
It receives the day and leads to the PCM voice signal that module is sent；
The PCM voice signal is converted into analog voice signal；
The analog voice signal is sent to the digital intercom module, so that the digital intercom module is by the mould
Quasi- voice signal is converted to audio digital signals；The audio digital signals are sent, realize proximal end intercom.
In alternative embodiments, this method further include:
Receive the second analog voice signal that digital intercom module is sent；
Second analog voice signal is converted into the second audio digital signals；
By second audio digital signals according to pcm encoder Trellis Coded Modulation at the 2nd PCM voice signal；
The 2nd PCM voice signal is sent to day and leads to module, so that the day leads to module for the 2nd PCM voice
Signal is sent, and realizes that distal end day is believed all.
The beneficial effect of the embodiment of the present invention includes, for example:
In communication terminal provided in an embodiment of the present invention and method, wherein the communication terminal includes that day leads to module, master control mould
Block and digital intercom module, day leads to module, digital intercom module is connected with main control module respectively；Main control module leads to mould by day
Block carries out distal end satellite communication, and main control module carries out proximal end intercom by digital intercom module.Therefore the embodiment of the present invention
The communication terminal of offer can pass through digital intercom by day being led to function and intercommunication function combines in regional area
Machine composition local grouies busy that information can lead to teletransmission by day after summarizing, and the communication in the certain specific occasions of effective solution is asked
Topic.The communication terminal can be adapted for the area of no terrestrial network covering, widen application scenarios, such as a team on ground
Under certain emergency occasions that face public network signal can not cover (such as the local works such as desert, forest or go on a tour), by should
Communication terminal is used by the team leader of team, other team members then use intercom, so in a certain range team it
Between intercom can be used, when need communication with the outside world then to use by team leader the communication terminal carry out day believe all, this
Sample has a wide range of applications scene with regard to the communication issue under the effective solution emergency occasion.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is that a kind of day of communication terminal provided in an embodiment of the present invention leads to the structural schematic diagram of module；
Fig. 2 is a kind of structural schematic diagram of digital intercom module of communication terminal provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of main control unit of communication terminal provided in an embodiment of the present invention；
Fig. 4 is a kind of structural block diagram of communication terminal provided in an embodiment of the present invention；
Fig. 5 is a kind of principle design frame chart of communication terminal provided in an embodiment of the present invention；
Fig. 6 is that day provided in an embodiment of the present invention leads to module and main control unit voice pathway principle design frame chart；
Fig. 7 is digital intercom module provided in an embodiment of the present invention and main control unit voice pathway principle design frame chart；
Fig. 8 is that day provided in an embodiment of the present invention leads to voice and the mutual transparent transmission mode principle design frame chart of radio voice；
Fig. 9 is that day provided in an embodiment of the present invention leads to module and digital intercom module program download circuit design frame chart；
Figure 10 is a kind of flow chart of communication means provided in an embodiment of the present invention；
Figure 11 is the flow chart of another communication means provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that if there is the side of the instructions such as term " on ", "lower", "inner", "outside"
Position or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the side usually put
Position or positional relationship, are merely for convenience of description of the present invention and simplification of the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, being only used for distinguishing description if there is term " first ", " second " etc., it is not understood to indicate or imply phase
To importance.
It should be noted that in the absence of conflict, the feature in the embodiment of the present invention can be combined with each other.
It is briefly described below with reference to the hardware configuration that Fig. 1 leads to module to the day referred in the application first:
Referring to Fig.1, the logical module in the day integrates Beidou/GPS module (indicating in Fig. 1 with Pinyin abbreviation BD), and north may be implemented
Bucket/GPS positioning function.
Its logical module is broadly divided into four parts: memory (Memory) part, power management (PMU) part, base band core
Piece part, RF transceiver chip part.
Wherein, memory portion functional overview: day lead to module storage part mainly use it is mature currently on the market
CMCP chip solution, this integrated chip eMMC chip and LPDDR2 chip, wherein the effect of eMMC chip is storage system program
Data and user data, the ephemeral data when effect of LPDDR2 is storage system operation.
Power management (PMU) partial function summarize: the effect of the part PMU is that function of supplying power is provided for whole system, PMU with
Baseband portion communication uses IIC protocol interface, and baseband chip part can be exported by each road power supply of IIC Interface Controller PMU
And the adjusting of output voltage.
Baseband chip partial function is summarized: baseband chip part leads to the cpu chip of module using day, and functional characteristics is such as
Under: 1, using the CMOS technology of high-performance low-power-consumption, 40nm manufacturing process, 388pin foot, 0.5pitch BGA package, area is
13mm×13mm；It 2, include 1 ARM9, ARM11 and 1 CEVA DSP using three core frameworks；3, support that it is logical；4, it props up
Hold Beidou/GPS；5, USB2.0HS is supported；6,2 groups of SIM card interfaces are supported；7,2 groups of SDIO interfaces are supported；8, support LPDDR2 and
Static memory.
RF transceiver chip partial function is summarized: day leads to RF transceiver chip part by rf chip, sound table
The composition such as surface wave filter SAW, low noise LNA, power amplifier PA, transmit-receive switch SWITCH, defends logical mobile communication signal for S-band
Transmitting-receiving.Support half-duplex operation, day leads to maximum transmission power 2W.
Beidou radio frequency part (BD) includes Beidou radio frequency chip and SAW, LNA etc., and wherein the gain of two-stage LNA is 40db,
Antenna is that active antenna supply voltage is 3.3V.
Secondly, in this application, digital intercom module selects the module of digital intercom compatible analog standard, micro- built in module
Controller, digital intercom chip and RF power amplification circuit.The digital intercom module not only can be with general simulation system in the market
Formula intercom is compatible, also has the function of digital walkie-talkie.The digital intercom module provides standardized serial line interface, can be with
Pass through serial command quickly and easily parameters such as the transmitting-receiving frequency of setup module and contact person.The digital intercom module it is highly integrated
Property make exploitation more simplify, only need in this module external audio frequency power amplifier, microphone, loudspeaker etc., digital intercom can be realized
The correlation function of machine.
Fig. 2 shows the hardware structure diagrams of the digital intercom module, carry out letter to the digital intercom module below with reference to Fig. 2
Illustrate:
The digital intercom module module is broadly divided into microcontroller (MCU), digital intercom chip and radio circuit three parts.
The function of MCU is to be controlled data, handled, connecting peripheral hardware (such as audio frequency power amplifier, microphone) etc.；DMR Modem is used
The digital intercom protocol chip of profession completes modem function；Radio circuit part is mainly by RF switch, power amplification
The composition such as device, LNA (Low Noise Amplifier low-noise amplifier), filter, frequency mixer, completes penetrating for digital intercom
The reception of frequency signal, emission function.
Finally, the structural block diagram of the main control unit referring to shown in Fig. 3 carries out briefly the main control unit referred in the application
It introduces:
Main control unit uses the LC1860C chip of occasion core, and LC1860C chip is the CMOS skill using high-performance low-power-consumption
Art, 28nm manufacturing process, BGA package are made.LC1860C is internally integrated (wherein one group four of six ARM A7 core processors
Core Cortex-A7, two groups of monokaryon Cortex-A7), every group of A7 includes SCU, and dominant frequency is up to 1.5G.It is integrated with three DSP simultaneously
It handles core (X1643, XC4210, TL420), it is dedicated to make at internal element configuration, communication protocol data processing and audio data
Reason.External memory interface of the LC1860C with optimization, LPDDR2/LPDDR3/DDR3 (L) memory, data width 32.
Possess a NFC interface, can external 8/16bits NandFlash, and provide read-write data 8-bit/15-bit/24-bit/
40-bit/60-bit ECC check function；One asynchronous expansion interface (HPI), can external DPRAM, SPRAM etc.；There are three gathering around
SDMMC interface supports SDMMC (3.0)/SDIO (3.0)/EMMC (4.5) agreement.
In figure, SC_Reset signal is that day leads to module reset signal, and SC_PWR signal is that day leads to module power on signal,
Sleep signal is that day leads to module sleep signal；Wakeup signal is that day leads to data bits signal, and SC_UART signal is that day leads to mould
Block UART signal, PCM signal are audio digital signals, and USB_SW signal is USB analog switch channel selecting signal, rec signal
For earpiece signal, spk signal is loudspeaker signal, and int signal is interrupt signal, and PWD signal is powering on for digital intercom module
Signal, DJ_reset signal are the reset signal of digital intercom module, and PTT signal is that the intercom push key of digital intercom module is believed
Number, DJ_UART signal is the UART signal of digital intercom module, and data signal is the data-signal of MT6755 and emcp, addr
Signal is the address signal of MT6755 and emcp, and clk signal is the clock signal of MT6755 and emcp, and Control signal is
The control signal of MT6755 and emcp.
EMCP is introduced: eMMC capacity need to be more than or equal to 32GB, and DDR capacity need to be more than or equal to 2GB, therefore this programme design uses
Modern H9TP26ABLDMCNR chip, it is eMMC and DDR2 two-in-one eMCP chip.H9TP26ABLDMCNR chipset
At 32GB eMMC and 2GB LPDDR2, meet this programme design requirement.
The embedded multi-die package of eMCP (embedded Multi Chip Package) is eMMC combination MCP package, together
The configuration of MCP, NAND Flash and Mobile DRAM is also packaged together by eMCP, compared with traditional MCP, more NAND
Flash controls chip, with managing mass flash memory, reduces burden of the master chip in operation, in volume more it is small simultaneously
Also economization more circuits link design, the design production for the smart electronics product manufacturer that is more convenient for.
Power management introduction: LC1160 is mainly integrated with power management function, Audio function, control interface；Wherein
LC1160 power management function is as follows:
Integrated RTC supply voltage；
Integrated 9-channel is high-effect, high current buck DC-DC；
Integrated ARM, GPU supply voltage dynamic voltage regulation control function；
Integrated 1-channel LCD backlight driving power；
Integrated 1-channel USB 5V charge pump；
Integrated 11-channel number LDO is supplying digital circuits；
Integrated 15-channel simulation LDO is analog circuit, the power supply of RF circuit；
Integrated charge indicates OD gate circuit；
Integrated 1-channel 175Hz PWM controller drives as motor；
Integrated 1-channel keypad LED；
Integrated battery charge function；
Cell voltage under-voltage protection；
Integrated 32KHz crystal oscillator；
8-channel ADC (analog-digital converter)；
LC1160Audio function is as follows:
2-Channel ADC microphone；
2-channel DAC speaker；
1-channel Class-D@700mW/8ohm, speaker；
1-channel DAC receiver；
1-channel headphone；
Earphone is inserted into audit function；
1-channel I2S and 1-channel pcm interface；
1-channel PDM number microphone interface；
LC1160 control interface is as follows:
Integrated 2-wire 400kHz I2C interface；
Integrated 4-wire 26MHz SPI interface；
Integrated 4-wire I2S/PCM audio interface；
Embodiment one:
Fig. 4 and Fig. 5 are please referred to, a kind of communication terminal 1 is present embodiments provided, which is integrated, packet
It includes the logical module 100 in day, main control module 200 and digital intercom module 300, the day and leads to module 100, the digital intercom module
300 are connected with the main control module respectively；
The main control module 200 leads to module 100 by the day and carries out distal end satellite communication, and the main control module 200 is logical
It crosses the digital intercom module 300 and carries out proximal end intercom.
Optionally, it includes that the exceedingly high line interface in day and the day connecting with the exceedingly high line interface in the day are exceedingly high that the day, which leads to module,
Line, and/or, the day leads to the Beidou antenna that module includes Beidou antenna interface and connect with the Beidou antenna interface, institute
State the intercommunication antenna that digital intercom module includes intercommunication antennal interface and connect with the intercommunication antennal interface.
In the present embodiment, the day leads to module and includes the exceedingly high line interface in day and connect with the exceedingly high line interface in the day
Its exceedingly high line, and, Beidou antenna interface and two antennas of Beidou antenna connecting with the Beidou antenna interface, the day lead to
Antenna leads to satellite by day and carries out remote communication, and the Beidou antenna carries out remote communication by big-dipper satellite or positioned.
The main control module includes main control unit and the earpiece being connected with the main control unit, loudspeaker and Mike
Wind.
Specifically, the main control unit includes for providing the MIC interface in microphone analog audio input channel, for mentioning
The loudspeaker analogue audio frequency output channel of audio-frequency amplifier is integrated with for the REC interface of earpiece analogue audio frequency output channel, offer
SPK interface, be respectively used to connect above-mentioned microphone, earpiece, loudspeaker.
Further, the main control unit includes the first UART interface (being indicated in figure with SC-UART) and pcm interface, institute
Stating the logical module in day includes UART interface and pcm interface, and the first UART interface of the main control unit and the day lead to module
UART interface is connected, and the pcm interface of the main control unit is connected with the pcm interface that the day leads to module.
Specifically, the main control unit includes the first universal asynchronous receiving-transmitting transmitter (Universal Asynchronous
Receiver/Transmitter, UART), the first UART interface can be provided for main control unit.
The main control unit includes audio codec, is specially encoded according to pulse code modulation scheme (PCM)
The PCM codec of modulation, for providing pcm interface all the way for main control unit.
The main control unit includes for by the digital analog converter of digital signal converting analogue signals and being used to that letter will to be simulated
Number be converted to the analog-digital converter of digital signal.
Further, the main control unit includes the first reseting interface (being indicated in figure with SC_RESET), Sleep interface
(i.e. sleep interface) and Wakeup interface (i.e. wake-up interface), the logical module in the day include RESET interface, Sleep interface and
Wakeup interface, first reseting interface are connected with the Reset interface that the day leads to module, the main control unit
Sleep interface is connected with the Sleep interface that the day leads to module, and the Wakeup interface and the day of the main control unit lead to mould
The Wakeup interface of block is connected.
The day leads to the SIM card that module further includes SIM card interface and connect with the SIM card interface.
Further, the main control unit includes PWR interface, and it includes PWR interface, the main control unit that the day, which leads to module,
PWR interface and the day lead to the PWR interface of module and be connected.
Further, the main control module includes USB switch (also known as downloading switching switch), and the main control unit includes
USB_SW interface (also known as downloading translation interface) and USB interface, it includes USB interface that the day, which leads to module, and the USB_SW connects
The USB interface that mouth, the USB interface of the main control unit and the day lead to module is connected with USB switch respectively, described
USB_SW interface connects in the channel USB that USB download interface provides in the USB of the main control unit for controlling the USB switch
It is switched between the USB interface of the logical module in mouth and the day.
To sum up, lead to module and main control unit catenation principle design rule such as about day in the hardware configuration of this communication terminal
Under:
Its logical module meets the requirement of China Telecom's single-mode terminal, supports day communication satellite communication standard, working frequency as follows: day
Logical band downlink: 2170MHz~2200MHz；Its logical uplink band: 1980MHz~2010MHz；
There are two antennal interfaces for its logical module, and the exceedingly high line interface in day, Beidou antenna interface are separately connected the exceedingly high line in day and north
Struggle against antenna.
Its logical module switch machine, working condition are controlled by main control unit；
The SC_RESET interface of main control unit is connected to the Reset interface that day leads to module, and main control unit can be connect by this
Mouth control day leads to module resets；
The PWR interface of main control unit is connected to the PWR interface that day leads to module, and main control unit can pass through this Interface Controller day
Logical module powers on, lower electricity；
The Sleep interface of main control unit is connected to the Sleep interface that day leads to module, and main control unit passes through this Interface Controller day
Logical module sleep；
The Wakeup interface of main control unit is connected to the Wakeup interface that day leads to module, and day, which leads to module, can pass through this interface
Wake up main control unit；
The SC_UART interface of main control unit is connected to the UART interface that day leads to module, and main control unit can pass through this interface
It issues AT order and is given to day and lead to module, realize that day leads to module and makes a phone call or send short messages function, day leads to module also by this interface
It issues AT order and is given to main control unit, realize that day leads to module and day is reported to lead to the data such as satellite signal strength, location information；Above-mentioned
AT instruction is applied to the instruction for connecting with communicating between terminal device and PC application.
The pcm interface of main control unit is connected to the pcm interface that day leads to module, and main control unit leads to module by this interface and day
Carry out audio digital signals interaction；
The power-management interface of main control unit is connected to the BAT interface that day leads to module, and main control unit is day by this interface
Logical module for power supply；
Its logical module is integrated with the SIM card functional module including SIM card interface, can be directly connected to SIM card.
Lead to module and the design progress letter of main control unit voice pathway principle about day in the communication terminal below with reference to Fig. 6
Illustrate:
Its logical module provides PCM (Pulse Code Modulation, pulse code modulation) interface all the way, is used for and master
The transmission for controlling the voice data between unit, can be configured to holotype and slave pattern, synchronised clock can be configured to 8KHz, 16KHz,
24KHz, 32KHz or 48KHz, bit clock can be configured to 128KHz, 200KHz, 256KHz or 400KHz, and data are fixed as 16bit
A restrain uniform enconding format.
Main control unit, which provides pcm interface all the way, for the transmission of the voice data between peripheral hardware can be configured to holotype
And slave pattern, synchronised clock can be configured to 8KHz, 16KHz, 24KHz, 32KHz or 48KHz, bit clock can be configured to 128KHz,
200KHz, 256KHz or 400KHz support A to restrain uniform enconding format；It is defeated to provide analogue audio frequency by the CPU of main control unit simultaneously
Enter/output channel, earpiece output channel, loudspeaker output channel, microphone input channel.
Its logical module is in when making a phone call mode, and main control unit sends the AT order made a phone call by SC_UART interface
Lead to the UART interface of module to day, after day leads to the AT order that module receives main control unit, starts starting and make a phone call this part journey
Sequence, and establish call setting.
Wherein, when day is talked about all, voice sends out access explanation:
Collected speech simulation signal is sent to main control unit by microphone, the modulus being internally integrated by main control unit
Sonic wave amplitude signal sampling is converted into string number signal by converter (ADC), and by this string digital signal according to pulse code
Modulation technique (PCM) carries out coded modulation, will obtain a string of PCM signals after coded modulation, then be sent to day by pcm interface
Logical module, day leads to module and obtained PCM signal is modulated on the logical radio-frequency carrier in day, then is sent by the exceedingly high line in day.
When it is talked about all, phonetic incepting access explanation:
The day that its logical module is received by antenna leads to the modem that radiofrequency signal leads to module by day, and day is led to radio frequency
Voice signal in signal, which demodulates, to be come, and day leads to module again by these audio digital signals according to pcm encoder Trellis Coded Modulation
It is sent to main control unit at PCM signal, then by the pcm interface that day leads to module, the PCM signal received is sent to by main control unit
The digital analog converter (DAC) of main control unit, is reduced to analog audio signal, then by earpiece output channel issue earpiece or
Loudspeaker is sent to by loudspeaker output channel.
Further, the main control unit includes the second UART interface (being indicated in figure with DJ-UART), Line-out interface
And Line-in interface；The digital intercom module includes UART interface, Line-out interface and Line-in interface；It is described
Second UART interface of main control unit is connected with the UART interface of the digital intercom module；The Line- of the main control unit
Out interface is connected with the Line-in interface of the digital intercom module, the Line-in interface of the main control unit with it is described
The Line-out interface of digital intercom module is connected.
Further, the main control unit includes INT interface and PTT interface, and the digital intercom module includes INT interface
With PTT interface, the INT interface of the main control unit is connected with the INT interface of the digital intercom module, the main control unit
PTT interface be connected with the PTT interface of the digital intercom module.
Specifically, the digital intercom module, which is configured with, emits key for changing the intercommunication of digital intercom state, that is, wrap
PTT (Push-To-Talk) key for including PTT interface, for connecting the PTT interface of main control unit；The digital intercom state includes
Emission state and reception state；
The microprocessor of the digital intercom module also includes for by the digital-to-analogue conversion of digital signal converting analogue signals
Device and analog-digital converter for converting analog signals into digital signal.
Further, the digital intercom module include jtag interface (program download interface) and with the jtag interface
The JTAG Program download being connected.
Further, the main control unit includes PWD interface, and the digital intercom module includes PWD interface, the master control
The PWD interface of unit is connected with the PWD interface of the digital intercom module；
Further, the main control unit includes the second reseting interface (DJ-RESET interface), the digital intercom module
Including RESET interface, the second reseting interface of the main control unit is connected with the Reset interface of the digital intercom module.
Further, the main control unit includes battery management interface, and it includes BAT interface, the number that the day, which leads to module,
Word intercommunication module includes BAT interface, the day lead to the BAT interface of module, the digital intercom module BAT interface respectively with institute
The battery management interface for stating main control unit is connected.Above-mentioned BAT interface is known as power supply interface.
To sum up, the hardware configuration of the communication terminal is about digital intercom module and main control unit catenation principle design rule
Are as follows:
Digital intercom module reserves an intercommunication antennal interface, can be directly connected to digital intercom antenna；Digital intercom
The switching on and shutting down of module, working condition are controlled by main control unit；
The INT interface of main control unit is connected to the INT interface of digital intercom module, during digital module is reported by this interface
The event of breaking is to main control unit；
The PWD interface of main control unit is connected to the PWD interface of digital intercom module, and main control unit can pass through this interface control
Digital intercom module processed powers on, lower electricity；
The DJ_RESET interface of main control unit is connected to the Reset interface of digital intercom module, and main control unit can pass through
This Interface Controller digital intercom module resets；
The PTT interface of main control unit is connected to the PTT interface of digital intercom, and main control unit is right by this Interface Controller number
Say module reception/emission function；
The DJ_UART interface of main control unit is connected to the UART interface of digital intercom module, and main control unit can pass through this
Interface can issue AT order, and AT instruction is applied to the instruction for connecting with communicating between terminal device and PC application.AT is
Attention is given to digital intercom module, configuration digital intercom module operating mode, working frequency etc.；
The Line-out interface of main control unit is connected to the Line-in interface of digital intercom module, and main control unit can lead to
It crosses this interface and analog voice signal is sent to digital intercom module, realize the speech voice input function of digital intercom module；
The Line-in interface of main control unit is connected to the Line-out interface of digital intercom module, and digital intercom module can
Analog voice signal is sent to main control unit by this interface, the voice output function of digital intercom module is realized；
The power-management interface of main control unit is connected to the BAT interface of digital intercom module, and main control unit passes through this interface
For digital intercom module power supply；
Main control unit is integrated with audio codec, can provide pcm interface, microphone analog audio input channel all the way
(MIC), earpiece analogue audio frequency output channel (REC), be integrated with the loudspeaker analogue audio frequency output channel of audio-frequency amplifier
(SPK), earphone analog audio input channel (Line-in), earphone analog output channel (Line-out).
Below with reference to Fig. 7 in the communication terminal about digital intercom module and main control unit voice pathway principle design into
Row is briefly introduced:
1, when digital intercom is conversed, voice is sent out access and is described as follows:
Digital intercom module provides analog voice input channel all the way, can be directly connected to microphone, provide all the way
Analog voice output channel can be directly connected to earpiece or audio-frequency amplifier.
Digital intercom module such as can be received, be emitted by configuring UART interface at the functions, also can be by configuring PTT
Interface come control transmitting, when using PTT Interface Controller transmitting when, then digital intercom module according to preset channel frequency, connection
It is that people's information carries out audio call.
Specifically, digital intercom module is in emission state when pressing PTT key, analog voice input is opened simultaneously
Channel, collected speech simulation signal is sent to main control unit by microphone, while main control unit passes through modification voice-grade channel
Register, the MIC analog audio input channel of main control unit and Line-out analogue audio frequency output channel are arranged to winding
Mode, the data in such MIC analog audio input channel can be transmitted directly to Line-out analogue audio frequency output channel, main
Control unit passes through the Line-in interface that analog audio data is sent to digital intercom module by its Line-out interface again, number
The analog audio signal received is converted to audio digital signals by analog-digital converter (ADC) by intercommunication module, then will be digital
Voice signal is modulated on the carrier wave of digital intercom, is sent by digital intercom antenna.
2, when digital intercom is conversed, phonetic incepting access explanation:
When not pressing PTT key, digital intercom module is in reception state, when digital intercom module is received by antenna
When to voice call signal, the corresponding analogue audio frequency output channel of digital intercom module can be opened, while digital intercom module
INT interface can issue an interrupt signal to main control unit, and main control unit receives that configure corresponding audio after interrupt signal logical
Road register sets loop back mode for Line-in analog voice input channel and loudspeaker analogue audio frequency output channel, cooperates
Digital intercom module completes the connection of entire voice link.
Specifically, the voice call signal received is demodulated to come after digital intercom module receives voice call signal, solution
The audio digital signals recalled are converted into analog voice signal by digital analog converter (DAC), pass through digital intercom module
Line-out interface is sent to the Line-in interface of main control unit, because main control unit Line-in analog voice input channel with
Loudspeaker analogue audio frequency output channel is arranged to loop back mode, so analog voice signal can be played out by loudspeaker
Come.
Fig. 8 shows day provided in this embodiment and leads to voice and the mutual transparent transmission mode principle design frame chart of radio voice, ginseng
According to Fig. 8, the implementation that day leads to voice and the mutual transparent transmission of digital intercom voice is as follows:
A, the logical voice in day is sent to digital intercom module:
The voice signal that its logical module receives is sent to main control unit by pcm interface, and main control unit will receive
PCM audio digital signals are converted into analog voice signal by digital-to-analogue converter (DAC), then are respectively sent to main control unit
Line-out interface and SPK interface, main control unit send digital intercom mould for analog voice signal by Line-out interface
The analog voice signal received by analog-digital converter (ADC), is converted by the Line-in interface of block, digital intercom module
Audio digital signals, then this audio digital signals is modulated on the radio-frequency carrier of digital intercom, pass through digital intercom module
Intercommunication antenna is sent；The SPK interface of main control unit to analog voice signal directly played back by loudspeaker.
B digital intercom voice is sent to day and leads to module:
The voice signal that digital intercom receives passes through the Line-out interface of digital intercom module, by analog voice signal
It is sent to the Line-in interface of main control unit, the analog voice signal received is respectively sent to analog-to-digital conversion by main control unit
Device (ADC) and SPK interface, this analog voice signal is converted into audio digital signals by analog-digital converter, then passes through pcm encoder lattice
Formula coded modulation is sent to day finally by the pcm interface of main control unit and leads to module at PCM voice signal, day lead to module by this
PCM voice signal is modulated on radio-frequency carrier, is sent by the exceedingly high line in day；The mould that the SPK interface of main control unit arrives
Quasi- voice signal is directly played back by loudspeaker.
Finally, leading to module and the design of digital intercom module program download circuit about day in the communication terminal in conjunction with Fig. 9
It is briefly summarized:
One, digital intercom module program download circuit illustrates:
When digital intercom module downloads program, the jtag interface of digital intercom module needs to connect JTAG Program download,
Main control unit sends starting-up signal to digital intercom module by PWD interface, control digital intercom module booting and with JTAG journey
Sequence downloader establishes connection communication, establishes after the completion of connection communication, and digital intercom module can be downloaded soft by JTAG program
Part downloads program.
Two, day leads to modular program download circuit explanation:
Its logical module needs to download program by USB interface, and main control unit downloading program is also required to USB interface, so
USB switching device is added in circuit design, USB switch default connection direction is connected to main control unit side, and main control unit can be excellent
First use USB interface.When needing to lead to for day module downloading program, main control unit leads to module booting by PWR Interface Controller day,
It is switched again by USB_SW Interface Controller USB and the channel USB is switched to the logical module side in day, modular program downloading can be led to by day
Software is that day leads to module downloading program.
Communication terminal provided in this embodiment, including day lead to module, main control module and digital intercom module, day lead to module,
Digital intercom module is connected with main control module respectively；Main control module leads to module by day and carries out distal end satellite communication, master control mould
Block carries out proximal end intercom by digital intercom module.The communication terminal is by leading to function for day and intercommunication function combines
Come, such as certain emergency occasions (such as the local work such as desert, forest that can not be covered in ground public network signal for a team
Make or go on a tour) under, by using the communication terminal by the team leader of a team, other team members then use intercom, in this way
Intercom can be used between team in a certain range, when this for needing communication with the outside world then to use by team leader is logical
Letter terminal carries out day and believes all, and thus the communication issue under the effective solution emergency occasion, has a wide range of applications field
Scape.
Embodiment two:
As shown in Figure 10, the embodiment of the invention also provides a kind of communication means, described applied to above-mentioned communication terminal
Communication terminal includes that day leads to module, main control module and digital intercom module, the day lead to module, the intercommunication module respectively with institute
It states main control module to be connected, the method is executed by the main control module；Method includes:
Step S12 receives day and leads to the PCM voice signal that module is sent；
PCM voice signal is converted to analog voice signal by step S14；
Analog voice signal is sent to digital intercom module by step S16, so that digital intercom module believes analog voice
Number be converted to audio digital signals；Audio digital signals are sent, realize proximal end intercom.
Specifically, analog voice signal is sent to digital intercom module by main control module, so that digital intercom module is by mould
Quasi- voice signal is converted to audio digital signals；Audio digital signals are modulated on radio-frequency carrier, are sent by intercommunication antenna
It goes out, realizes proximal end intercom.
Further, this method further includes: playing analog voice signal.
This method realizes the logical module in day to the transparent transmission of digital intercom module through the above steps.
Consider how to realize digital intercom module to the logical module in day transparent transmission, further, referring to Fig.1 1, this method is also
Include:
Step S22 receives the second analog voice signal that digital intercom module is sent；
Second analog voice signal is converted into the second audio digital signals by step S24；
Step S26, by the second audio digital signals according to pcm encoder Trellis Coded Modulation at the 2nd PCM voice signal；
2nd PCM voice signal is sent to day and leads to module by step S28, so that day leads to module for the 2nd PCM voice signal
It sends, realizes that distal end day is believed all.
Specifically, the 2nd PCM voice signal is sent to day by main control module leads to module, so that day leads to module for the 2nd PCM
Voice signal is modulated on radio-frequency carrier, is sent by the exceedingly high line in day, realizes that distal end day is believed all.
Further, this method further includes: playing the second analog voice signal.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
Specific work process, can be with reference to the corresponding process in aforementioned terminals embodiment, details are not described herein.
Communication means provided in an embodiment of the present invention, it is special with communication terminal provided by the above embodiment technology having the same
Sign, so also can solve identical technical problem, reaches identical technical effect.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of communication terminal, which is characterized in that lead to module, main control module and digital intercom module including day, the day leads to mould
Block, the digital intercom module are connected with the main control module respectively；
The main control module leads to module by the day and carries out distal end satellite communication, and the main control module passes through the digital intercom
Module carries out proximal end intercom.
2. communication terminal according to claim 1, which is characterized in that the day lead to module include the exceedingly high line interface in day and
The exceedingly high line in day being connect with the exceedingly high line interface in the day, and/or, the day lead to module include Beidou antenna interface and with it is described
The Beidou antenna of Beidou antenna interface connection；
The digital intercom module includes intercommunication antennal interface and the intercommunication antenna that connect with the intercommunication antennal interface；
The main control module includes main control unit and the earpiece being connected with the main control unit, loudspeaker and microphone.
3. communication terminal according to claim 2, which is characterized in that the main control unit include the first UART interface and
Pcm interface, it includes UART interface and pcm interface that the day, which leads to module, the first UART interface of the main control unit and the day
The UART interface of logical module is connected, and the pcm interface of the main control unit is connected with the pcm interface that the day leads to module.
4. communication terminal according to claim 2, which is characterized in that the main control unit include the second UART interface,
Line-out interface and Line-in interface；The digital intercom module include UART interface, Line-out interface and
Line-in interface；Second UART interface of the main control unit is connected with the UART interface of the digital intercom module；It is described
The Line-out interface of main control unit is connected with the Line-in interface of the digital intercom module, the main control unit
Line-in interface is connected with the Line-out interface of the digital intercom module；
The main control unit further includes INT interface and PTT interface, and the digital intercom module includes INT interface and PTT interface,
The INT interface of the main control unit is connected with the INT interface of the digital intercom module, the PTT interface of the main control unit
It is connected with the PTT interface of the digital intercom module.
5. communication terminal according to claim 2, which is characterized in that the main control unit includes PWR interface, and the day is logical
Module includes PWR interface, and the PWR interface of the main control unit is connected with the PWR interface that the day leads to module；
The main control module further includes USB switch, and the main control unit includes USB_SW interface and USB interface, and the day leads to mould
Block includes USB interface, and the USB_SW interface, the USB interface of the main control unit and the day lead to the USB interface difference of module
It is connected with USB switch, the USB_SW interface is used to control the USB switch in the USB interface of the main control unit
It is switched between the USB interface of the logical module in the day.
6. communication terminal according to claim 2, which is characterized in that the main control unit includes PWD interface, the number
Intercommunication module includes PWD interface, and the PWD interface of the main control unit is connected with the PWD interface of the digital intercom module；
The digital intercom module includes jtag interface and the JTAG Program download being connected with the jtag interface.
7. communication terminal according to claim 2, which is characterized in that the main control unit includes the second reseting interface, institute
Stating digital intercom module includes RESET interface, the second reseting interface of the main control unit and the digital intercom module
Reset interface is connected；
The main control unit includes the first reseting interface, Sleep interface and Wakeup interface, and it includes RESET that the day, which leads to module,
Interface, Sleep interface and Wakeup interface, first reseting interface are connected with the Reset interface that the day leads to module, institute
The Sleep interface for stating main control unit is connected with the Sleep interface that the day leads to module, the Wakeup interface of the main control unit
The Wakeup interface for leading to module with the day is connected；
The day leads to the SIM card that module further includes SIM card interface and connect with the SIM card interface.
8. communication terminal according to claim 2, which is characterized in that the main control unit includes battery management interface, institute
Stating day and leading to module includes BAT interface, and the digital intercom module includes BAT interface, and the day leads to the BAT interface, described of module
The BAT interface of digital intercom module is connected with the battery management interface of the main control unit respectively.
9. a kind of communication means, which is characterized in that it is applied to communication terminal as claimed in any one of claims 1 to 8, it is described logical
Letter terminal includes that day leads to module, main control module and digital intercom module, the day lead to module, the intercommunication module respectively with it is described
Main control module is connected, and the method is executed by the main control module；The described method includes:
It receives the day and leads to the PCM voice signal that module is sent；
The PCM voice signal is converted into analog voice signal；
The analog voice signal is sent to the digital intercom module, so that the digital intercom module is by the simulation language
Sound signal is converted to audio digital signals；The audio digital signals are sent, realize proximal end intercom.
10. according to the method described in claim 9, it is characterized by further comprising:
Receive the second analog voice signal that digital intercom module is sent；
Second analog voice signal is converted into the second audio digital signals；
By second audio digital signals according to pcm encoder Trellis Coded Modulation at the 2nd PCM voice signal；
The 2nd PCM voice signal is sent to day and leads to module, so that the day leads to module for the 2nd PCM voice signal
It sends, realizes that distal end day is believed all.
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