CN103944599A - Rail transit wireless communication terminal equipment based on TETRA - Google Patents
Rail transit wireless communication terminal equipment based on TETRA Download PDFInfo
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Abstract
The invention relates to rail transit wireless communication terminal equipment based on TETRA. The equipment is a locomotive station, is respectively and wirelessly communicated with a CAD server, a dispatching station, a fixed station, other locomotive stations and outside calls through wireless network coverage, and comprises a control box, a host, an antenna, an application layer program, a recording program, an interface management program and a call service interface program. The control box comprises a displaying and operating unit, a control unit and a recoding unit; the host comprises a power supply unit, a switchover unit and a TETRA module. Compared with several kinds of digital trunked systems, the rail transit wireless communication terminal equipment based on the TETRA has the advantages of being complete in commanding and dispatching function, flexible in networking mode, high in antijamming capability, high in spectrum utilization rate, large in system capacity, capable of providing voice and data communication service and flexible network management functions, high in encryption and off-Internet function and the like, can achieve an off-Internet direct connection mode and end-to-end encryption and meets the demands of providing high-quality locomotive stations for current light rail transit.
Description
Technical field
The present invention relates to Wireless Telecom Equipment, particularly a kind of track traffic radio communication terminal based on TETRA technology.
Background technology
At present, trunking mobile communication is progressively from simulation era trend digital Age.Because the simulation trunking mobile communication net of track traffic exists frequency low; The class of business that can provide is limited, and high data rate service can not be provided; Confidentiality is poor, is easily ravesdropping; Cost of removing equipment is high, and volume is large, and network management is difficult to the defects such as control.Therefore, TETRA wireless communication system is used for to light rail subway field, obtain at present generally accreditation both domestic and external, domestic light rail metro project has nearly all adopted TETRA system, TETRA system is also brought into use in the places such as Civil Aviation Airport successively, and visible TETRA is more and more extensive in the application in special market.In order to strengthen high data rate service, meet track traffic dispatching services demand, further realize the interactive function of call treatment and short data, for user provides reliable voice-and-data service, current that the communication terminal device of existing light rail subway is carried out to secondary development is imperative.
Summary of the invention
In view of deficiency and the defect of above-mentioned prior art existence, the present invention provides reliable voice-and-data service for track traffic development one can be user, be adapted to track traffic dispatching requirement, track traffic radio communication terminal---locomotive station based on TETRA technology.
The technical scheme that the present invention takes is: a kind of track traffic radio communication terminal based on TETRA technology, it is characterized in that: described track traffic radio communication terminal is locomotive platform, this locomotive platform carries out radio communication with CAD server, dispatching desk, fixed station, other locomotive platform and outside line respectively by the network coverage, and described locomotive platform comprises control box part, host machine part, antenna and application layer program, recorded program, interface management program and call business interface routine; Control box part comprises demonstration operating unit, control unit and recording unit; Host machine part comprises power subsystem, adapter unit and TETRA module; Wherein the demonstration operating unit in control box is connected with control unit with liquid crystal interface by keystroke interface respectively, control unit connects electrophone and loudspeaker, and be connected to recording unit by recording access, be connected with host machine part by debug serial port and USB interface, recording unit is connected to SD card interface simultaneously; Power subsystem in main frame is connected with TETRA module by adapter unit, and TETRA module connects described antenna.
The attainable function of the present invention is as follows:
Locomotive platform can automatic acquisition running number, car group number, department's plane No., attaching information, up-downgoing information etc., the operation of login/off-grid.
2. driver presses and manually turns group button, manually selects ownership dispatching desk, and inputs running number and department's plane No., manually turns group.
3. in rolling stock section, the calling of rolling stock section's fixed station can be initiated/receive to locomotive platform (other locomotive platform).Trainman in rolling stock section can initiate or receive the calling of rolling stock section's dispatching desk.
4., when the locomotive on main track passes through different areas under control, station, can realize attached group of switching of locomotive platform, and upgrade interface information.
5. the calling when station fixed station in area under control, next stop can be initiated/be received to the locomotive platform on main track; Can initiate/receive the calling to dispatching desk; Can initiate the urgent call to traffic control panel; Locomotive in rolling stock section can be initiated the urgent call to rolling stock section's dispatching desk; Can receive the broadcast & call that traffic control panel is sent; Transfer by dispatching desk, locomotive platform can be realized the call with outside line.
6. can realize the call between different trains.Locomotive platform can sending/receiving dispatching desk short message.Locomotive platform can record and dial, received call and missed call.
7. the backlight illumination of volume and liquid crystal can be set.
8. can record to all calls, and can carry out playback.Comprise multiple prompt tone, ringing tone, busy tone, feeble field district prompt tone.
9. locomotive platform can carry out self-inspection and provide alarm self operating voltage, temperature and wireless signal field.
Feature of the present invention is: locomotive platform transmits service for user provides reliable speech and data message, ensures the normal talking between TD person and driver, Platform attendant and driver when operation, meets daily TD; After entering rolling stock section, ensure the normal talking between signal box dispatcher and driver, running person on duty and driver.Realize control unit simultaneously and the message interaction of TETRA main frame and recording unit, and have short message service, speech business, sound-recording business, switch and auditory tone cues at interface frequently; Adopt the liquid crystal display screen of high-resolution and large-screen, realize a large amount of Refresh Data while renewal between interface.
The present invention is compared with other several digital cluster systems, there is command scheduling function ratio more complete, networking mode is flexible, antijamming capability is strong, the availability of frequency spectrum is high, power system capacity is large, voice can be provided, data communication service and Network Management Function flexibly, the feature such as encrypts and off-grid function is stronger, can realize network-off direct-passing pattern and End to End Encryption.The present invention provides the demand of high-quality locomotive platform for current light rail transit.
Brief description of the drawings
Fig. 1 is the theory diagram that locomotive platform of the present invention and other terminal system communicate;
Fig. 2 is locomotive platform equipment connection theory diagram;
Fig. 3 is software module division figure of the present invention;
Fig. 4 is application layer program flow diagram of the present invention;
Fig. 5 is recorded program flow chart of the present invention;
Fig. 6 is interface management program flow diagram of the present invention;
Fig. 7 is call business interface routine flow chart of the present invention.
Embodiment
For a more clear understanding of the present invention, describe in detail below in conjunction with drawings and Examples:
As shown in Figure 1, this locomotive platform is the track traffic radio communication terminal based on TETRA technology, selects the main flow ARM9 processor S3C2440 of 400M dominant frequency to carry out the exploitation of embedded OS.Locomotive platform can send position checking solicited message, warning information to CAD server, and can receive clock information, ATS information that CAD server sends; Can complete and the communicating by letter of dispatching desk, fixed station; Switching realization that can be by dispatching desk is communicated by letter with other locomotives on main track; Can send and connect and the communicating by letter of outside line by dispatching desk.
As shown in Figure 2, locomotive platform is mainly made up of main frame, control box and antenna.Locomotive platform main frame is mainly made up of TETRA module, power subsystem and adapter unit.TETRA module completes voice, the function of data and signal processing, adopt the MTM800 of MOTOROLA company, MTM800E is the Digital Clustering vehicle module based on TETRA standard, up-to-date digital signal processor (DSP) and linear RF power amplifier (PA) technology are adopted, communicate by TETRA air interface protocol and base station, can meet the functional requirement of locomotive platform and fixed station.In the locomotive platform of secondary development, mainly carry out the interactive function of call treatment and short data.
The DC110V that power subsystem provides locomotive is converted into DC13.8V, and for TETRA module and control box provide voltage, power subsystem adopts existing 4137 power circuits.
The object of adapter unit is to realize the connection of control unit and TETRA module, and realizes the power supply control of control unit to TETRA module.Adapter unit cardinal principle is by the mutual level conversion of message data between TETRA module and control unit; Between audio signal balance and non-balance, change, in order to increase the anti-interference in audio signal transmission process, between TETRA module and control panel, audio signal all will transfer balanced signal to and transmits; Adapter unit is realized the power supply control to TETRA module, once TETRA module crashes, cannot carry out soft-off, and the power supply of controlling TETRA module carries out hard power-off operation; Adapter unit can also be realized the control of locomotive platform broadcast and alarm signal.
Locomotive platform control box is mainly by control unit, recording unit, demonstration operating unit and some peripheral hardwares (handle, loud speaker) composition.Main Function is man-machine interface, for client provides friendly Chinese display interface, various operation control buttons and speech input and output easily; Can also record to all calls.
Control unit adopts Embedded System Design, system adopts ARM flush bonding processor, embedded OS WinCE and mbedded GUI to design, the built-in locomotive platform control interface of system, audio output interface is communicated by letter and data, services for locomotive operation provides.Control unit CPU adopts embedded processors ARM 9; Memory is selected the Nand Flash chip of Samsung company; Internal memory adopts SDRAM type memory.
Recording unit adopts CIR record cell, is stored in Nand Flash memory.
Show the TFT liquid crystal that operating unit liquid crystal adopts, button adopts 5 × 5 keyboard matrix.
As shown in Figure 3, hardware platform related software comprises BootLoader, OAL and BSP.
Operating system part comprises the customization of WinCE operating system nucleus, Development of device driver.
Application layer comprises interface management, file management, data base administration, voice management, recording unit message and serial ports 1 read-write management, the AT order of Expand Head interface and serial ports 2 read-write management and SB9600 message interface and serial ports 3 read-write management.
Software is mainly divided into drive part and application layer part.Drive part has been mainly the function of processor bottom, realizes the control to peripheral hardware.Comprise the volume control of the unit of recording, the backlight illumination control of liquid crystal, the response of keyboard, the detection of temperature sensor, the detection of power input voltage, the control of soft-off, serial communication and offer the interface of system applies layer.
Application layer part mainly realizes automatic/hand position checking, call with dispatching desk, fixed station, in case of emergency realize the urgent call to dispatching desk/fixed station, message registration is stored, realize sound-recording function can playback, the short message service of realization and dispatching desk, the working power to oneself, temperature, wireless signal field are connected and detect with voice frequency link, provide warning information in exceeding normal range (NR).
As shown in Figure 4, application layer program of the present invention has the following steps: judge whether to have created database, if created database, reading out data library information, otherwise first creation database, create again each sub-interface and enter interface management, and according to creating serial ports class object, first open serial ports 1 and enter the read-write management of recording unit, open again serial ports 3 and enter the management of SB9600 interactive interfacing, open again serial ports 2 and enter short message service interactive maintenance, then create voice management thread and enter voice management, creation database management thread enters data base read-write management, last opening timing device, application layer program circuit finishes.
As shown in Figure 5, recorded program of the present invention has the following steps: send request the oldest voice messaging details behind recording unit, if receive the response message that reply recording unit, analytic message, obtains the ID of a current the oldest voice messaging; If do not receive the response message that reply recording unit, the oldest voice messaging details of the request that resends arrive recording unit, do not receive yet the response message that reply recording unit for three times if resend, point out communication failure, then send request up-to-date voice messaging details to recording unit, if receive the response message that reply recording unit, analytic message, obtains the ID of a current up-to-date voice messaging; If do not receive the response message that reply recording unit, resend up-to-date voice messaging details of request to recording unit, do not receive yet the response message that reply recording unit for three times if resend, point out communication failure, send request up-to-date N bar voice messaging details to recording unit, if receive the response message that reply recording unit, analytic message, obtain up-to-date N bar voice messaging details to recording unit, then upgrade speech interfaces and show; If do not receive the response message that reply recording unit, resend the up-to-date N bar voice messaging details of request to recording unit, do not receive yet the response message that reply recording unit for three times if resend, point out communication failure.
As shown in Figure 6, interface management program of the present invention has the following steps: create after interface framework, initial beggar interface, serial ports and database, have press key message if show behind main interface, and be left soft key, shows interface of main menu; Otherwise by other message or other keystroke handling, then continue to have judged whether press key message, if return key turns back to and shows main interface; Otherwise by other Message Processing, if acknowledgement key shows sub-interface; If directionkeys, changes main menu choice; Otherwise by other keystroke handling.
Interface management realizes: whole engineering is the engineering based on dialog box, the corresponding main thread in main interface, the subdialogue frame that all the other need to show is all non-modal dialog, and the object of all subdialogue frame classes all, as the data member of main dialog class, is dispatched and managed by main thread unification.
After start, main dialog box thread execution realizes the initialization at each sub-interface in the function of main dialog box by creating non-modal dialog, respond different buttons by function, shows different sub-interfaces by ShowWindow.In the time that a certain sub-interface is shown, this sub-interface has just obtained focus, now push button, key assignments is caught by the function at this sub-interface, now concerning this sub-interface, under this key assignments, will show that what interface is known, therefore only need to call ShowWindow shows the sub-interface that will show, calls ShowWindow and hides current sub-interface.Under a certain sub-interface, to return back to main interface if press certain key, only the sub-interface of current demonstration need be hidden.
As shown in Figure 7, call business interface routine of the present invention has the following steps: if press dispatching key, judge current whether in login state, if current in login state, the short message that MMI sends call scheduling is to TETRA main frame, upgrades interface display to the state of setting up with dispatch call; If current not in login state, eject prompting interface, if receive the callback of scheduling, open recording access, upgrade interface display and the state of dispatching call, otherwise eject prompting interface, finish.
Claims (5)
1. the track traffic radio communication terminal based on TETRA technology, it is characterized in that: described track traffic radio communication terminal is locomotive platform, this locomotive platform is covered respectively and is carried out radio communication with CAD server, dispatching desk, fixed station, other locomotive platform and outside line by wireless network, and described locomotive platform comprises control box part, host machine part, antenna and application layer program, recorded program, interface management program and call business interface routine; Control box part comprises demonstration operating unit, control unit and recording unit; Host machine part comprises power subsystem, adapter unit and TETRA module; Wherein the demonstration operating unit in control box is connected with control unit with liquid crystal interface by keystroke interface respectively, control unit connects electrophone and loudspeaker, and be connected to recording unit by recording access, be connected with host machine part by debug serial port and USB interface, recording unit is connected to SD card interface simultaneously; Power subsystem in main frame is connected with TETRA module by adapter unit, and TETRA module connects described antenna.
2. a kind of track traffic radio communication terminal based on TETRA technology according to claim 1, it is characterized in that: described application layer program has the following steps: judge whether to have created database, if created database, reading out data library information, otherwise first creation database, create again each sub-interface and enter interface management, and according to creating serial ports class object, first open serial ports 1 and enter the read-write management of recording unit, open again serial ports 3 and enter the management of SB9600 interactive interfacing, open again serial ports 2 and enter short message service interactive maintenance, then create voice management thread and enter voice management, creation database management thread enters data base read-write management, last opening timing device, application layer program circuit finishes.
3. a kind of track traffic radio communication terminal based on TETRA technology according to claim 1, it is characterized in that: described recorded program has the following steps: send request the oldest voice messaging details behind recording unit, if receive the response message that reply recording unit, analytic message, obtains the ID of a current the oldest voice messaging; If do not receive the response message that reply recording unit, the oldest voice messaging details of the request that resends arrive recording unit, do not receive yet the response message that reply recording unit for three times if resend, point out communication failure, then send request up-to-date voice messaging details to recording unit, if receive the response message that reply recording unit, analytic message, obtains the ID of a current up-to-date voice messaging; If do not receive the response message that reply recording unit, resend up-to-date voice messaging details of request to recording unit, do not receive yet the response message that reply recording unit for three times if resend, point out communication failure, send request up-to-date N bar voice messaging details to recording unit, if receive the response message that reply recording unit, analytic message, obtain up-to-date N bar voice messaging details to recording unit, then upgrade speech interfaces and show; If do not receive the response message that reply recording unit, resend the up-to-date N bar voice messaging details of request to recording unit, do not receive yet the response message that reply recording unit for three times if resend, point out communication failure.
4. a kind of track traffic radio communication terminal based on TETRA technology according to claim 1, it is characterized in that: described interface management program has the following steps: create after interface framework, initial beggar interface, serial ports and database, if show behind main interface and have press key message, and be left soft key, show interface of main menu; Otherwise by other message or other keystroke handling, then continue to have judged whether press key message, if return key turns back to and shows main interface; Otherwise by other Message Processing, if acknowledgement key shows sub-interface; If directionkeys, changes main menu choice; Otherwise by other keystroke handling.
5. a kind of track traffic radio communication terminal based on TETRA technology according to claim 1, it is characterized in that: described call business interface routine has the following steps: if press dispatching key, judge current whether in login state, if current in login state, the short message that MMI sends call scheduling is to TETRA main frame, upgrades interface display to the state of setting up with dispatch call; If current not in login state, eject prompting interface, if receive the callback of scheduling, open recording access, upgrade interface display and the state of dispatching call, otherwise eject prompting interface, finish.
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| CN201410156864.2A CN103944599A (en) | 2014-04-18 | 2014-04-18 | Rail transit wireless communication terminal equipment based on TETRA |
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| CN105391462A (en) * | 2015-12-08 | 2016-03-09 | 天津七一二通信广播有限公司 | Rail traffic wireless communication terminal apparatus |
| CN106184297A (en) * | 2015-07-10 | 2016-12-07 | 海能达通信股份有限公司 | The method of a kind of track traffic scheduling and server, system |
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Application publication date: 20140723 |