CN105472557A - TD-LTE emergency communication terminal based on Beidou GPS dual-mode positioning, and monitoring command system - Google Patents

TD-LTE emergency communication terminal based on Beidou GPS dual-mode positioning, and monitoring command system Download PDF

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Publication number
CN105472557A
CN105472557A CN201510873706.3A CN201510873706A CN105472557A CN 105472557 A CN105472557 A CN 105472557A CN 201510873706 A CN201510873706 A CN 201510873706A CN 105472557 A CN105472557 A CN 105472557A
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China
Prior art keywords
module
communication terminal
lte
big dipper
gps dual
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Pending
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CN201510873706.3A
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Chinese (zh)
Inventor
余翔
秦少鹏
涂斯宇
段思睿
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Chongqing University of Post and Telecommunications
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Chongqing University of Post and Telecommunications
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Priority to CN201510873706.3A priority Critical patent/CN105472557A/en
Publication of CN105472557A publication Critical patent/CN105472557A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/025Services making use of location information using location based information parameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42Determining position
    • G01S19/421Determining position by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system
    • G01S19/425Determining position by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system by combining or switching between signals derived from different satellite radio beacon positioning systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]

Abstract

The invention relates to a TD-LTE emergency communication terminal based on Beidou GPS dual-mode positioning, and a monitoring command system, and belongs to the technical field of communication. The system comprises communication terminals based on a Linux system, and the network communication between the communication terminals and between the communication terminals and a monitoring command center. Each communication terminal comprises a power module, a Beidou GPS dual-mode positioning module, a voice module, a communication transmission module, and a display control module. The Beidou GPS dual-mode positioning module is used for achieving a function of satellite positioning, and the voice module is used for achieving voice input and output. The display control module is used for the processing and displaying of data information, and the operating of the whole communication terminal. The system is based on the technology of Beidou GPS dual positioning and TD-LTE, is accurate, reliable and quick in positioning, is high in communication rate, is small in time delay, is good in stability, is convenient to operate, is suitable for the rescue in natural hazards, the guarantee for public security, the anti-terrorist stability safeguard and emergency rescue, and provides quick and reliable communication, navigation, command and dispatching services.

Description

Based on TD-LTE emergency communication terminal and the monitoring and commanding system of Big Dipper GPS dual-mode location
Technical field
The invention belongs to communication technical field, relate to a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location and monitoring and commanding system.
Background technology
Big-dipper satellite navigation system is the global position system of China's independent research.Satellite navigation system is important dimensional information's basic installation, and China pays much attention to the construction of satellite navigation system.Making great efforts the global position system of development independent intellectual property right always.This system has been successfully applied to the numerous areas such as mapping, telecommunications, water conservancy, fishery, communications and transportation, forest fire protection, the mitigation disaster relief and public safety at present.But triones navigation system is compared and gps system, still there is gap.The stable performance of gps system, precision is high, and industrial system is very perfect, and business model is ripe, and occupation rate of market is high.But along with China is to the input of Beidou satellite system, the application of Big Dipper product and universal, Beidou satellite navigation system will play larger effect.
TD-LTE is the 4G standard that China dominates research and development, and along with the development of telecommunication service, TD-LTE broadband network communication system is more and more perfect.Compare with traditional 2G with 3G, TD-LTE provides wireless communication speeds quickly, has lower network delay, can realize high-quality communicating requirement, for voice, text message provide faster more reliable real time communication.
Natural calamity in recent years, Accident of Large-scale, emergencies in public safety frequently occurs, and it is more and more important that emergency communication system also highlights.Set up and the communicating of the Command center keeping the site of the accident and a distant place, site specific is transferred to command centre, and by the generalized information system analysis site environment of Command center, for effective command scheduling and efficient field rescue provide service.
But in prior art, communication terminal cannot meet natural calamity, Accident of Large-scale rescue and commander, the requirement of the site disposal people communication such as emergencies in public safety; Existing location technology is difficult to realize quick obtaining geographical location information accurately and reliably under complex environment; Existing technology can not send information and control and command center is mutual; Existing WIFI, 2G, 3G technology are difficult to the technical barrier realizing the multimedia messages such as voice, information remote wireless transmission.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location and monitoring and commanding system, Real-time Collection and the transmission of the information interaction communication such as voice and geodata between Field Force can be realized, and Field Force and control and command center interactive communication; Control and command center accepts on-the-spot real-time geographic information data, improves communication quality, improves real-time and the reliability of data acquisition transmission, for control and command provides concrete information accurately.
For achieving the above object, the invention provides following technical scheme:
Based on TD-LTE emergency communication terminal and the monitoring and commanding system of Big Dipper GPS dual-mode location, comprise the communication terminal based on linux system, by TD-LTE network service between communication terminal and with control and command center; Described communication terminal comprises power module, Big Dipper GPS dual-mode locating module, voice module, communications module and display control module; Described Big Dipper GPS dual-mode locating module is used for realizing satellite positioning functions, and described voice module is used for realizing phonetic entry and exports, and described display control module is used for processing and displaying data message, and operates whole communication terminal.
Further, described display control module comprises low-power-consumption embedded processor, TFT touch display, comprises the storage element of NANDFlash and SDRAM, comprises the external interface unit of USB and expansion I/O and audio frequency I/O; Display control module and other model calling, process and display the data message that other module transfer comes, and operate whole communication terminal.
Further, described voice module comprises microphone, A/D converting unit, loudspeaker, D/A converting unit; Voice module utilizes ALSA speech processes framework to realize voice collecting, playback.
Further, described Big Dipper GPS dual-mode locating module comprises low-power consumption Big Dipper GPS positioning chip, antenna; This module accepts satellite-signal by antenna and positions, acquiescence uses Big Dipper GPS dual-mode pattern to position, the Big Dipper or gps signal too weak, when causing obtaining satellite-signal, automatic switchover single mode positions, and also obtains satellite-signal by operating and setting single-mode.
Further, described communications module is TD-LTE transport module, comprises TD-LTE radio circuit, TD-LTE Analog Baseband, TD-LTE baseband processor; This module to be connected with control and command center by base station, TD-LTE core network and to carry out IP data communications.
Further, described power module comprises rechargeable battery and the solar panel of detachable replacing; This module in charge powers to whole communication terminal.
Further, described monitoring and commanding system comprises large screen display system, database server, multimedia communications system and satellite positioning information system.
Further, described satellite positioning information system adopts that the geography information based on GIS technology shows, inquiry system.
Further, described database server mainly comprises registration database, local data base, application server and data processing server.
Beneficial effect of the present invention is:
1, namely described TD-LTE terminal installation can access commercial network also can access the dedicated networks such as TD-LTE emergency communication system, not only can be implemented in the remote radio communication of nationwide, can also communicate with foundation by fast quick-recovery under complex environment, realize the environment of control and command center to emergent scene, the effective Feedback of event conditions, and realize remote command scheduling.
2, the TD-LTE technology that described TD-LTE terminal installation uses the comparatively technology such as 2G, 3G, radio in transmission rate with there is greater advantage qualitatively, can realize the real-time of emergency communication to Transmitting of Multi-media Informations such as voice and the requirement of reliability.
3, described TD-LTE terminal installation location uses Big Dipper GPS dual-mode location, by the ready-made program algorithm stored, more accurate and reliable geographical location information can be obtained, also can adopt independent mode operation regimes, avoid situation about cannot locate when wherein a kind of locate mode goes wrong.By accurate location, user can be allowed to understand oneself situation and surrounding enviroment in real time.
4, described monitoring and commanding system comprises on-screen display system, database server, the communication server and control and command platform, and wherein control and command platform comprises multimedia communications system and satellite fix GIS-Geographic Information System.Control and command center and each terminal are by TD-LTE wireless communication, individual calling, group calling and broadcast can be carried out exhale, realize the scheduling of efficient remote command, pass through GIS technology, can position each terminal in real time and follow the tracks of and inquiry terminal position surrounding enviroment, real-time geographical locations information is preserved, for the command scheduling of science provides foundation.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is practical scene operating diagram of the present invention;
Fig. 2 is the structure principle chart of communication terminal of the present invention;
Fig. 3 is Big Dipper GPS dual-mode locating module schematic diagram of the present invention;
Fig. 4 is display control module theory diagram of the present invention;
Fig. 5 is TD-LTE transport module schematic diagram of the present invention;
Fig. 6 is monitoring and commanding system structure principle chart of the present invention;
Fig. 7 is system configuration schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 7 is system configuration schematic diagram of the present invention, and as shown in the figure, this system comprises the communication terminal based on linux system, by TD-LTE network service between communication terminal and with control and command center; Described communication terminal comprises power module, Big Dipper GPS dual-mode locating module, voice module, communications module and display control module; Described Big Dipper GPS dual-mode locating module is used for realizing satellite positioning functions, and described voice module is used for realizing phonetic entry and exports, and described display control module is used for processing and displaying data message, and operates whole communication terminal.
Native system realizes collection to voice messaging, coding, storage, decoding, playback by voice module and display control module, by in display control module preset programmed algorithm, realize the individual calling of voice communication, group calling, group busy, priority arrange and forced interposing and forced releasing.Can be located and show the geography information such as map, position, navigation by real-time tracing by Big Dipper GPS dual-mode locating module and display control module.Realize the two-forty of data, low delay transmission by TD-LTE transport module, give other terminal and control and command center by speech data by TD-LTE Internet Transmission, and by the geographical location information real-time Transmission of terminal to control and command center.At control and command center, realize to the voice communication of each terminal by monitoring and commanding system and on electronic chart, show each terminal location and relevant geographical position situation in real time, realizing the inquiry services such as motion path reproduction, path planning.
Figure 1 show practical scene operating diagram of the present invention: by TD-LTE communication network, control and command center and each terminal carry out communicating and interconnected communication between each terminal.Terminal installation and Beidou satellite navigation system and gps system interconnected.Reliable, real-time voice call is efficiently realized by communication terminal, in conjunction with the geographical location information sent, field conditions is reported to control and command center, control and command center utilizes monitoring and commanding system to carry out scientific and efficient remote command, scheduling, realize the real-time voice call of each terminal use on-the-spot, cooperation is finished the work mutually simultaneously.
Figure 2 illustrate the structural principle block diagram of communication terminal of the present invention, comprising: display control module, voice module, Big Dipper GPS dual-mode locating module, TD-LTE transport module, battery module.
Described voice module comprises microphone, A/D converting unit, loudspeaker, D/A converting unit.ALSA speech processes framework is utilized to realize voice collecting, playback.
ALSA speech processes framework provides the support of audio frequency and MIDI on (SuSE) Linux OS.Voice module is connected with display control module, and the voice data transmission after being changed by A/D carries out speech coding to display control module, or accepts the speech data from display control module decoding, and speech coding, decoding are by G.711 audio coder & decoder (codec) realization.
Figure 3 show the theory diagram of Big Dipper GPS dual-mode locating module of the present invention, this module adopts and core star leads to UM220-N dual system high-performance GNSS module, this module has dual system multi-frequency performance SOC, BDB1, GPSL1 two frequency bins can be supported, there is integrated level high, low in energy consumption, the feature that size is little, this module sensitivity is high, can provide excellent in weak signal conditions and catch, tracking sensitivity, keep continuity and the reliability of receiver location, and support single system location-independent and multisystem combined location.This module is connected with display control module, the satellite location data received is sent to display control module and processes further, and by operating on display control module, the selection that can complete station-keeping mode switches, and default mode is Big Dipper GPS dual-mode location.This module has accurate time transmission function, after system is started shooting at every turn, can be corrected by this module to system time.
Fig. 4 illustrate the theory diagram of display control module of the present invention, structure mainly comprises low-power-consumption embedded processor, TFT touch display, comprise the storage element of NANDFlash and SDRAM, comprise the external interface unit of USB and expansion I/O and audio frequency I/O.Display control module and other model calling, process and display the data message that other module transfer comes, and operate whole communication terminal.
Display control module is connected with voice module, and the speech data after A/D conversion voice module transmission come is encoded, and then the data after coding is carried out two parts process, on the one hand data is deposited into SDRAM, carries out this locality and stores; On the other hand the data after coding are carried out processing stored in transmit queue, for the wireless transmission of speech data according to RTP host-host protocol.Meanwhile, accept by TD-LTE transport module the speech data of coming, after decoding, be transferred to voice module.
Display control module is connected with Big Dipper GPS dual-mode locating module, the satellite information that Big Dipper GPS dual-mode locating module receives is raw data format, by the programmed algorithm preset in display control module, data are compiled on the one hand, intuitively effectively geographical location information is presented on TFT touch display by numerical monitor, comprise longitude, latitude, highly, direct of travel, gait of march, and show the Big Dipper and gps satellite signal state, comprise signal strength signal intensity, satellitosis etc., on electronic chart, mark current position simultaneously, by setting destination, route planning, realize navigation feature, on the other hand reception is carried out satellite location data by carrying out processing stored in transmit queue according to UDP host-host protocol, for wireless transmission.
Display control module also has editor's character message breath function, comprise the collection of letters, transmit, store, inquire about, preset SMS, by TFT touch display, carry out the operations such as copy editor shows, when emergency, preset SMS directly can be sent, and without the need to carrying out short message editing, Word message is also transmit according to udp protocol.
Fig. 5 shows TD-LTE transport module schematic diagram of the present invention, structure mainly comprises TD-LTE baseband processor, TD-LTE Analog Baseband, TD-LTE radio circuit etc.By TD-LTE module, terminal can be accessed by LTE network, this module is connected with display control module, transmit queue in continuous reading displayed control module, speech data, character message breath and geographic information data are sent to control and command center or other terminal networked, and receive the message entering network termination from control and command center and other, thus realize radio communication.
Described power module comprises rechargeable battery and the solar panel of detachable replacing, and this module in charge powers to whole communication terminal.
The voice communication service of this terminal installation comprises individual calling, group calling, broadcast are exhaled, and three kinds of communication services meet emergency communication consensus standard.For realizing various communication service, first each terminal installation will complete and register on the database server at control and command center, comprises IP number and the numbering of registration terminal, default priority, arrange the group number of grouping, application adds terminal and the operating state thereof of group calling.By the information registered at database server and function, in conjunction with SIP signaling control protocol in terminal internal program, realize main exhale with by the foundation of exhaling, call denial and calling disconnect.
Fig. 6 shows the structural representation of monitoring and commanding system of the present invention: comprise on-screen display system, database server, the communication server and control and command platform, and wherein control and command platform comprises multimedia communications system and satellite fix GIS-Geographic Information System.
The described communication server comprises LTE base station and mobile base station, monitoring and commanding system is accessed TD-LTE network, realizes telecommunication command scheduling function, forms an emergency communication system.The log-on message received, service request, speech data, character message and geographical location information are transferred to database server and do further process by the communication server, or the data after database server processes are sent to each terminal.
Described database server mainly comprises registration database, local data base, application server and data processing server.For realizing individual calling, the setting of communication service that group calling, broadcast are exhaled priority, need by the information registering of each terminal in registration database, send registration request by terminal and complete, each like this terminal just can with other registered terminal communications.The foundation request of processing terminal session is responsible for by application server.When there being terminal to want initiating speech conversation, the session solicited message received is sent to application server by the communication server, application server is searched according to solicited message and is exhaled SOT state of termination in registration database, if now exhaled terminal to be in holding state or can session be set up according to priority protocol, then application server is sent session establishment request to exhaling, session establishment ACK message is sent to application server again after being exhaled terminal to receive session establishment request, then application server is exhaled terminal to send to master again and is set up session ACK message, last then can session be set up, if now exhaled terminal to be in talking state and the priority of exhaling according to priority protocol master is lower, then application server is exhaled to master and is sent session establishment failed message.When terminal initiates group calling session establishment request, application server is then searched registration database according to request message and is that the terminal participating in group calling sets up group calling log-on message, then sends group calling to the terminal participating in group calling and sets up message.When session request is exhaled in terminal initiation broadcast, application server searches SOT state of termination in registration database according to request message, and according to priority protocol, exhales set up message to each terminal transmission broadcast.
Described data processing server is responsible for processing concrete communication data.On the one hand, if what the communication server received is VoP or Word message packet, data processing server then carries out decoding process according to Real-time Transport Protocol to packet, then by decoded data stored in system cache, again the data in buffer memory are sent to the multimedia communications system of control and command platform, simultaneously by the data in buffer memory stored in local data base, guarantee the integrality of historical data.On the other hand when the speech data at control and command center or Word message data send over by multimedia communications system, data processing server is encoded to these data, then is sent by the communication server, simultaneously by data stored in local data base.If what the communication server received is geographical location information data bag, data processing server is then according to udp protocol decoded data packets, then the data such as coordinate are processed, by geographic position data stored in system cache, data format after dissection process meets the data format of generalized information system, again the geographic position data in buffer memory is sent to the satellite fix GIS-Geographic Information System of control and command platform, simultaneously by the geographic position data in buffer memory stored in local data base, for the business such as inquiry of system.
Described control and command platform comprises multimedia communications system and satellite fix GIS-Geographic Information System.By multimedia communications system, control and command center personnel can carry out voice communication and Word information communication with remote terminal user, and has the highest priority when voice communication.Multimedia communications system can voice communication between real-time listening remote terminal and Word information communication, makes control and command central instant understand the situation conversion of remote scene, for command scheduling provides information reference.
The geography information of described satellite positioning information system mainly based on GIS technology shows, inquiry system.The geographic position data that system acceptance sends to database server, can the position of terminal be labeled on electronic chart, simultaneously according to the satellite positioning information comprised in data, also can the height above sea level of display terminal position, the direct of travel of terminal and gait of march.Constantly more aobvious according to data, just can the mobile route of display terminal, realizes the object of monitoring.In conjunction with GIS database content, can geographical environment situation around inquiry terminal position, comprise natural environment and social environment, and be the functions such as terminal programme path, for command scheduling provides supplementary.By calling the terminal geographic position data that local data base stores, can query history geographical location information and reproduction terminal historical path.
Described on-screen display system, shows all data letters and systemic-function, and switches various display interface by operation.Displaying contents mainly comprises registered terminals and operating state thereof, conversation, the character message that each terminal sends, electronic chart (satellite view and 2D view), and on electronic chart, show motion state and the positional information of each terminal.
The present invention adopts TD-LTE network, solves certain inferior position problem that the conventional communication networks such as 3G, 2G, radio require for process high data rate, the transmitted in packets of data, low delay, wide area covering etc. to exist.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.

Claims (9)

1. based on TD-LTE emergency communication terminal and the monitoring and commanding system of Big Dipper GPS dual-mode location, it is characterized in that: comprise the communication terminal based on linux system, by TD-LTE network service between communication terminal and with control and command center; Described communication terminal comprises power module, Big Dipper GPS dual-mode locating module, voice module, communications module and display control module; Described Big Dipper GPS dual-mode locating module is used for realizing satellite positioning functions, and described voice module is used for realizing phonetic entry and exports, and described display control module is used for processing and displaying data message, and operates whole communication terminal.
2. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 1 and monitoring and commanding system, is characterized in that: described display control module comprises low-power-consumption embedded processor, TFT touch display, comprises the storage element of NANDFlash and SDRAM, comprises the external interface unit of USB and expansion I/O and audio frequency I/O; Display control module and other model calling, process and display the data message that other module transfer comes, and operate whole communication terminal.
3. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 1 and monitoring and commanding system, is characterized in that: described voice module comprises microphone, A/D converting unit, loudspeaker, D/A converting unit; Voice module utilizes ALSA speech processes framework to realize voice collecting, playback.
4. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 1 and monitoring and commanding system, is characterized in that: described Big Dipper GPS dual-mode locating module comprises low-power consumption Big Dipper GPS positioning chip, antenna; This module accepts satellite-signal by antenna and positions, acquiescence uses Big Dipper GPS dual-mode pattern to position, the Big Dipper or gps signal too weak, when causing obtaining satellite-signal, automatic switchover single mode positions, and also obtains satellite-signal by operating and setting single-mode.
5. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 1 and monitoring and commanding system, it is characterized in that: described communications module is TD-LTE transport module, comprise TD-LTE radio circuit, TD-LTE Analog Baseband, TD-LTE baseband processor; This module to be connected with control and command center by base station, TD-LTE core network and to carry out IP data communications.
6. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 1 and monitoring and commanding system, is characterized in that: described power module comprises rechargeable battery and the solar panel of detachable replacing; This module in charge powers to whole communication terminal.
7. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 1 and monitoring and commanding system, is characterized in that: described monitoring and commanding system comprises large screen display system, database server, multimedia communications system and satellite positioning information system.
8. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 7 and monitoring and commanding system, is characterized in that: described satellite positioning information system employing shows based on the geography information of GIS technology, inquiry system.
9. a kind of TD-LTE emergency communication terminal based on Big Dipper GPS dual-mode location according to claim 7 and monitoring and commanding system, is characterized in that: described database server mainly comprises registration database, local data base, application server and data processing server.
CN201510873706.3A 2015-12-02 2015-12-02 TD-LTE emergency communication terminal based on Beidou GPS dual-mode positioning, and monitoring command system Pending CN105472557A (en)

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Application publication date: 20160406