CN114039620A - Wide-narrow band integration wireless train dispatching station radio station - Google Patents
Wide-narrow band integration wireless train dispatching station radio station Download PDFInfo
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- CN114039620A CN114039620A CN202111325834.6A CN202111325834A CN114039620A CN 114039620 A CN114039620 A CN 114039620A CN 202111325834 A CN202111325834 A CN 202111325834A CN 114039620 A CN114039620 A CN 114039620A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- 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
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The invention provides a wide-band and narrow-band integrated wireless train dispatching station radio station, which comprises a main control unit, a wireless communication unit, a wired communication unit, an audio unit, a call signaling unit, a TDCS (time division multiplex) interface unit, a key display unit, a control box unit and a power supply unit, wherein the main control unit is used for controlling the wireless train dispatching station radio station; the main control unit is connected with the wireless communication unit through a call signaling unit, the wireless communication unit comprises a public network mobile communication channel machine unit and a 450MHz channel machine unit, the call signaling unit comprises an audio signaling shaping circuit and a sub-audio modem, and the main control unit is connected with the wired communication unit through an FFSK modem and a single-audio decoder. The invention adopts the working mode that two wireless communication modes are simultaneously used, the various working modes are not influenced when the equipment works, the communication efficiency, the communication safety and the reliability of a radio station at a wireless train dispatching station are effectively improved while the existing wireless train dispatching communication system is well compatible, and the system construction cost is reduced.
Description
Technical Field
The invention relates to the technical field of railway locomotive communication equipment, in particular to a wide-band and narrow-band integrated wireless train dispatching station radio station.
Background
In China, railway transportation is a very important position regardless of passenger transport or freight transport. With the rapid development of railway services, the train carrying capacity is larger and faster, and higher requirements on the working efficiency, safety, reliability and other performances of the railway wireless train dispatching communication equipment are provided while the capacity is increased.
A450 MHz wireless communication mode is adopted in a traditional station radio station, the problems that the frequency points are the same, transmitted information can be received, the communication confidentiality is poor, the same frequency interference is serious and the like exist, in order to improve the communication reliability, a plurality of anti-interference devices need to be added on a transmission link, in order to improve the communication distance and eliminate the communication blind area, a plurality of relay devices need to be erected, and the system construction cost is high and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a wide-band and narrow-band integrated wireless train dispatching station radio station to overcome the defects in the prior art.
In order to achieve the aim, the invention provides a broadband and narrowband integrated wireless train dispatching station radio station, which comprises a main control unit; the main control unit is connected with the wireless communication unit, the wireless communication unit is used for wireless communication with other station radio stations, locomotive radio stations, portable stations and relay equipment, and the wireless communication unit comprises a public network mobile communication channel machine unit and a 450MHz channel machine unit; the main control unit is connected with the wired communication unit through an FFSK modem and a single-audio-frequency decoder, the wired communication unit is used for wired communication with a dispatching switchboard and a monitoring switchboard, the FFSK modem is used for modulating and demodulating call command data and detection command data, and the single-audio-frequency decoder is used for identifying pilot signals from the dispatching switchboard; the audio unit is used for providing audio transmission channels from the wired communication unit to the control box unit, from the control box unit to the wireless communication unit, from the wired communication unit to the wireless communication unit, from the TDCS interface unit to the wireless communication unit; the main control unit is connected with the call signaling unit, the call signaling unit is connected with the wireless communication unit, the call signaling unit comprises an audio signaling shaping circuit and a sub-audio modem, and the call signaling unit is used for encoding and decoding call and called audio signaling and sub-audio signaling among other station radio stations, locomotive radio stations, portable stations and relay equipment; the main control unit is connected with the TDCS interface unit, and the TDCS interface unit is used for controlling the station radio station to be in a transmitting state during the dispatching command sending period and forwarding the dispatching command; the main control unit is connected with the control box unit, and the control box unit is used for carrying out data communication with the main control unit so as to enable the main control unit to respond to all key requests of the control box unit and control the indicator light and the horn switch of the main control unit; the main control unit is connected with the key display unit, and the key display unit is used for setting parameters of the machine, testing performance indexes and indicating various working states.
Through the technical scheme, based on the 2G/3G/4G high-speed public network mobile communication technology, the high-speed public network broadband mobile communication and the 450MHz private network narrow-band wireless communication are integrated, two working modes used simultaneously are adopted, various working modes are not affected when the equipment works, the communication efficiency, the communication safety and the reliability of a radio station at a train dispatching station are effectively improved when the existing wireless train dispatching communication system is well compatible, and the system construction cost is reduced.
As a further description of the radio station of the train dispatching station integrated with the wide-band and narrow-band integration, preferably, the main control unit comprises an MCU, the MCU is connected with an RS422 level shifter, and the RS422 level shifter is connected with the control box unit; the MCU is connected with the FFSK modem through a synchronous serial interface and is connected with the single audio decoder through a GPIO interface; the MCU is connected with the TDCS interface unit through the GPIO interface; the MCU is connected with an electronic switch through a GPIO interface, the electronic switch is connected with the audio unit, and the electronic switch is used for controlling the switch of each audio transmission channel of the audio unit; the MCU is connected with a key indicator lamp controller through a synchronous serial interface, the key indicator lamp controller is connected with a key display unit, and the key indicator lamp controller is used for controlling the key display unit; the MCU is connected with the audio signaling shaping circuit through an internal timer, and the audio signaling shaping circuit is used for modulating and demodulating audio signaling; the MCU is connected with the sub-audio modem through the synchronous serial interface, and the sub-audio modem is used for modulating and demodulating the sub-audio signaling; the MCU is connected with the PTT controller through the GPIO interface, the PTT controller is connected with the wireless communication unit, and the PTT controller is used for carrying out emission control on the wireless communication unit; the MCU is connected with the channel switching controller through the parallel interface, the channel switching controller is connected with the wireless communication unit, and the channel switching controller is used for carrying out channel switching control on the wireless communication unit.
Through the technical scheme, the MCU of the main control unit is constructed by adopting a high-speed and low-power consumption Cygnal C8051F series microprocessor, so that a high-speed data processing function is realized on the hardware platform, and various communication functions of the station radio station are efficiently realized. The C8051F series single chip microcomputer is a fully integrated mixed signal system-level chip, has a 8051 compatible microcontroller core, and is fully compatible with an MCS-51 instruction set. Besides the digital peripheral component with the standard 8051, the chip is integrated with the analog component and other digital peripheral and functional components commonly used in the data acquisition and control system, such as a 12-bit 8-channel AD converter and 2 12-bit D/A converters, SPI, I2C, 2 UART serial interfaces, and the like, and the embedded microprocessor chip is high in integration level, stable and reliable. The MCU of the main control unit controls all the constituent units to work according to the function requirements and responds to the key operation and the communication request of the control box in time.
As a further description of the wideband and narrowband integrated wireless train dispatching station radio station, preferably, the audio signaling shaping circuit is configured to shape the audio signaling square wave generated by the main control unit into a sine wave, or demodulate the audio signaling sine wave received by the wireless communication unit into a square wave.
Through the technical scheme, the audio signaling square waves are generated by the internal timer function of the MCU of the main control unit, then are processed into sine waves by the audio signaling shaping circuit, and are sent to the wireless communication unit for wireless transmission, so that the station radio station generates the audio signaling for calling the locomotive radio station by the dispatching switchboard. The audio signaling of the locomotive radio station call dispatching switchboard received by the wireless communication unit is shaped into square waves by sine waves through an audio signaling shaping circuit, and then is demodulated by an MCU of the main control unit, so that the audio signaling decoding function of the locomotive radio station call dispatching switchboard is realized.
As a further description of the wideband and narrowband integrated radio train station radio station according to the present invention, preferably, the sub-tone modem is used to generate sub-tone signaling for calling a neighboring station radio station, a calling locomotive radio station with accurate frequency, or decode the sub-tone signaling for calling the station radio station.
Through the technical scheme, in the 450MHz wireless communication state, when a station radio station calls equipment such as an adjacent station, a locomotive radio station, a portable station and the like in a wireless mode, the sub-audio frequency modem generates a corresponding sub-audio frequency signaling function; and the function of decoding the received subaudio frequency signaling by the subaudio frequency modem when other wireless equipment in the system calls the station platform is realized.
As a further description of the wideband and narrowband integrated wireless train dispatching station radio station of the present invention, preferably, the wired communication unit further has a circuit for receiving and sending audio signals of a dispatching switchboard, so as to implement a function of communicating between the station radio station and the dispatching switchboard, and a function of communicating between the station radio station forwarding dispatching switchboard and the locomotive radio station by voice.
As a further description of the broadband and narrowband integration wireless train dispatching station radio station, the radio station further preferably comprises a power supply unit, wherein the power supply unit is a power supply voltage stabilizing module converting AC220V to DC13.8V, and is used for providing stable and reliable DC13.8V working voltage for each unit of the station radio station.
As a further description of the wideband and narrowband integrated wireless train dispatching station radio station of the present invention, preferably, the public network mobile communication channel unit is an interphone terminal with a public network talkback function, the 450MHz channel unit is a 450MHz channel,
by the technical scheme, based on the cluster service platform of the 2G/3G/4G/5G mobile public network, the public network mobile communication channel unit adopts the interphone terminal with the public network talkback function, and the half-duplex cluster communication service in the mobile network coverage range is provided for users by utilizing the public network talkback scheduling platform service.
As a further description of the radio station of the train dispatching station integrated with the wideband and narrowband integration, preferably, the key display unit includes an intelligent display driving chip, a high-brightness digital tube, an LED indicator light and a high-sensitivity key; the main control unit is connected with the intelligent display driving chip, the intelligent display driving chip is connected with the high-brightness nixie tube, the LED indicating lamps and the keys, so that the intelligent display driving chip drives the 4-digit high-brightness nixie tube, the 6 LED indicating lamps and the keys.
Through the technical scheme, the communication between the intelligent display driving chip and the MCU is realized, the parameter setting and performance index testing functions of the station radio station local machine are realized, the indication of various working states of the host is realized, and the display control and key scanning functions of a nixie tube and an LED (light-emitting diode) indicator lamp can be completed.
As a further description of the wideband and narrowband integrated wireless train dispatching station radio station, preferably, the TDCS interface unit includes a level control circuit and a second audio circuit, the level control circuit is connected to the main control unit, the level control circuit is configured to control the station radio station to be in a transmitting state during a period of transmitting a dispatching command, and the wireless communication unit forwards the dispatching command, and the second audio circuit is connected to the audio unit.
The invention has the following beneficial effects:
1. based on the 2G/3G/4G high-speed public network mobile communication technology, the high-speed public network broadband mobile communication and 450MHz private network narrow-band wireless communication are integrated, two working modes which are simultaneously used are adopted, various working modes are not influenced mutually when the equipment works, the existing wireless train dispatching communication system is well compatible, and the radio station communication efficiency, the communication safety and the reliability of the wireless train dispatching station are effectively improved.
2. The public network digital mobile communication relies on a public mobile wireless network, the mobile signal coverage area is not limited, the communication distance is not limited, the conversation tone quality is clear, the sound reduction degree is high, the communication data has an encryption function and the communication confidentiality is strong, the communication efficiency and the communication reliability are effectively improved, and the system construction cost is effectively reduced because relay equipment such as a base station and the like does not need to be erected.
Drawings
Fig. 1 is a schematic structural diagram of a wide-band and narrow-band integrated wireless train dispatching station radio station of the invention.
Fig. 2 is a schematic diagram of the connection of the master control unit of the present invention.
Fig. 3 is a schematic diagram of a wideband and narrowband integrated wireless train tone communication system.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
As shown in fig. 1, a radio train dispatching station radio station integrating wide band and narrow band integration comprises a main control unit 1, a wireless communication unit 2, a wired communication unit 3, an audio unit 4, a call signaling unit 5, a TDCS interface unit 6, a key display unit 7 and a control box unit 8.
The main control unit 1 is connected with a wireless communication unit 2, and the wireless communication unit 2 is used for wireless communication with other station radio stations, locomotive radio stations, portable stations and relay equipment. The wireless communication unit 2 comprises a public network mobile communication channel unit and a 450MHz channel unit, which respectively carry public network mobile communication and 450MHz wireless mobile communication. Based on the cluster service platform of the 2G/3G/4G/5G mobile public network, the public network mobile communication channel unit adopts an interphone terminal with a public network talkback function, and provides half-duplex cluster communication service within the coverage range of the mobile network for users by utilizing the service of a public network talkback dispatching platform. The 450MHz channel machine unit is a 450MHz channel machine.
The main control unit 1 is connected with the wired communication unit 3 through the FFSK modem 13 and the single audio decoder 14, and the wired communication unit 3 is used for wired communication with the dispatching switchboard and the monitoring switchboard. The FFSK modem 13 uses a low-voltage and low-power-consumption FFSK modem chip for modulating and demodulating the call command data and the detection command data, so as to realize transmission of the call command data of the dispatching switchboard and the station radio station, and realize transmission of the monitoring switchboard and the station radio station monitoring command data. The single audio decoder 14 adopts a single audio decoding chip with low power consumption and high audio identification accuracy for identifying the pilot signal from the dispatching central office, so as to realize accurate identification of the pilot signal sent by the dispatching central office by the station radio station and realize the function of controlling the station radio station to be in a transmitting state by the dispatching central office. The wired communication unit 3 is also provided with a circuit for receiving and sending audio signals of the dispatching switchboard, so that the communication function between the station radio station and the dispatching switchboard is realized, and the voice communication function between the station radio station forwarding dispatching switchboard and the locomotive radio station is realized.
The main control unit 1 is connected with an audio unit 4, the audio unit 4 is respectively connected with a wireless communication unit 2, a wired communication unit 3, a TDCS interface unit 6 and a control box unit 8, and the audio unit 4 is used for providing audio transmission channels from the wired communication unit 3 to the control box unit 8, from the control box unit 8 to the wireless communication unit 2, from the wired communication unit 3 to the wireless communication unit 2 and from the TDCS interface unit 6 to the wireless communication unit 2. The audio unit 4 has the functions of adjusting audio amplitude and controlling the channel switch by an electronic switch, and the audio channels from the wired communication unit 3 to the control box unit 8 realize the communication function between the dispatching switchboard and the station radio station; the audio channel from the control box unit 8 to the wireless communication unit 2 realizes the communication function between the station radio station and the adjacent station radio station, the locomotive radio station and the portable station; the audio channels from the wired communication unit 3 to the wireless communication unit 2 realize the communication function between the station radio station forwarding dispatching switchboard and the locomotive radio station; and the TDCS interface unit 6 is connected with the audio channel of the wireless communication unit 2, so that the function of forwarding and scheduling commands by station radio stations is realized.
The main control unit 1 is connected with a call signaling unit 5, the call signaling unit 5 is connected with the wireless communication unit 2, and the call signaling unit 5 is used for encoding and decoding audio signaling and sub-audio signaling of calls and calls between other station radio stations, locomotive radio stations, portable stations and relay equipment. In a 450MHz wireless train tone communication system, different audio or sub-audio signaling is adopted to distinguish called devices in the calling process of wireless devices. The call signalling unit 5 comprises an audio signalling shaping circuit 17 and a sub-audio modem 18. The audio signaling shaping circuit 17 is used for shaping the square wave of the audio signaling generated by the main control unit 1 into sine wave, and sending the sine wave to the wireless unit for wireless transmission, so as to realize the generation and transmission of the audio signaling of the dispatching switchboard calling locomotive radio station; or the sine wave of the audio signaling of the radio station call dispatching switchboard of the wireless communication unit 2 is demodulated into square waves, and then the demodulation is carried out by the main control unit, so as to realize the decoding function of the audio signaling. The sub-audio modem 18 employs a high precision sub-audio modem chip CMX808, the sub-audio modem 18 being used to generate frequency accurate sub-audio signaling for calling adjacent station stations, calling locomotive stations, or decoding sub-audio signaling for calling station stations.
The main control unit 1 is connected with a TDCS interface unit 6, and the TDCS interface unit 6 is configured to control the station radio station to be in a transmitting state during sending the scheduling command, and forward the scheduling command. The TDCS interface unit 6 comprises a level control circuit and a second audio circuit, the level control circuit is connected with the main control unit 1, the level control circuit is used for controlling the station radio station to be in a transmitting state during the period of sending the dispatching command and forwarding the dispatching command by the wireless communication unit 2, and the second audio circuit is connected with the audio unit 4.
The main control unit 1 is connected with the control box unit 8, and the control box unit 8 is used for data communication with the main control unit 1, so that the main control unit 1 responds to all key requests of the control box unit 8 and controls the indicator lights and the horn switches of the main control unit. The control box mainly comprises a key indicator light unit, a main control unit, an audio unit, a power supply unit and the like.
The main control unit 1 is connected with a key display unit 7, and the key display unit 7 is used for setting parameters of the machine, testing performance indexes and indicating various working states. The key display unit 7 comprises an intelligent display driving chip, a high-brightness digital tube, an LED indicator light and a high-sensitivity key; the main control unit 1 is connected with the intelligent display driving chip, the intelligent display driving chip is connected with the high-brightness nixie tube, the LED indicating lamps and the keys, so that the intelligent display driving chip drives the 4-digit high-brightness nixie tube, the 6 LED indicating lamps and the keys. One chip can complete the functions of nixie tube, LED indicator lamp display control and key scanning.
The station radio also comprises a power supply unit 9, wherein the power supply unit 9 is an AC 220V-DC13.8V power supply voltage stabilizing module and is used for providing stable and reliable DC13.8V working voltage for each unit of the station radio.
The main control unit controls the interphone to enter a transmitting state and can transmit the audio signal sent by the audio unit; when the interphone is in a receiving state, the interphone informs the main control unit that the interphone is in the receiving state, at the moment, the wirelessly received audio signal is sent to the audio unit for amplitude adjustment and then sent to the corresponding communication channel, so that the wireless public network mobile communication function of the station radio station and other station radio stations, locomotive radio stations and portable stations is realized, and the wireless communication function of the switching dispatching command and the locomotive radio station is realized.
The main control unit controls the 450MHz channel machine to realize the channel switching function of the 450MHz channel machine. The main control unit controls the 450MHz channel machine to enter a transmitting state, and at the moment, the 450MHz channel machine can send a subaudio signal output by the subaudio unit or an audio signal output by the audio unit; when the 450MHz channel machine is in a receiving state, the 450MHz channel machine informs the main control unit that the 450MHz channel machine is in the receiving state, the 450MHz channel machine demodulates a subaudio signal from a wireless carrier frequency signal, sends the subaudio signal to the subaudio unit for demodulation, sends the demodulated audio signal to the audio unit for amplitude adjustment, and then sends the audio signal to a corresponding audio channel, thereby realizing the 450MHz wireless communication of a station radio station and the communication function of a transfer dispatching switchboard and a locomotive radio station.
Based on the 2G/3G/4G high-speed public network mobile communication technology, the high-speed public network broadband mobile communication and the 450MHz private network narrow-band wireless communication are integrated, two working modes which are simultaneously used are adopted, various working modes of the equipment during working are not influenced mutually, the existing wireless train dispatching communication system is well compatible, and meanwhile, the radio station communication efficiency, the communication safety and the reliability of the wireless train dispatching station are effectively improved.
As shown in fig. 2, the main control unit 1 includes an MCU11, an MCU11 is connected to the RS422 level shifter 12, and the RS422 level shifter 12 is connected to the control box unit 8; the control box unit 8 is in data communication with the main control unit 1, so that the host can respond to all key requests on the control box, and the host can control the indicator lights and the horn switch on the control box.
The MCU11 is connected with the FFSK modem 13 through a synchronous serial interface, and the MCU11 is connected with the single audio decoder 14 through a GPIO interface; the communication function between the main control unit 1 and the FFSK modem 13 is realized, and the signaling data transmission between a dispatching switchboard and a station radio station is realized.
The MCU11 is connected with the TDCS interface unit 6 through a GPIO interface; the communication between the TDCS interface unit 6 and the main control unit 1 is realized, and the functions of controlling the station radio station to be in a transmitting state and transmitting the dispatching command during the dispatching command sending period of the dispatching command TDCS are realized.
The MCU11 is connected to the electronic switch 15 through a GPIO interface, the electronic switch 15 is connected to the audio unit 4, and the electronic switch 15 is used to control the switching of each audio transmission channel of the audio unit 4.
The MCU11 is connected with the key indicator controller 16 through a synchronous serial interface, the key indicator controller 16 is connected with the key display unit 7, and the key indicator controller 16 is used for controlling the key display unit 7; the data communication between the main control unit 1 and the key indicator lamp controller 16 is realized, the real-time scanning of keys on a panel of a station radio host and the control of nixie tube and indicator lamp display are realized, and the functions of setting station radio parameters, debugging functions and the like are realized.
The MCU11 is connected with the audio signaling shaping circuit 17 through an internal timer, and the audio signaling shaping circuit 17 is used for modulating and demodulating audio signaling; an internal timer function of the MCU of the main control unit generates an audio signaling square wave, the audio signaling square wave is then processed into a sine wave by the audio signaling shaping circuit 17, and the sine wave is sent to the wireless communication unit 2 for wireless transmission, so that the station radio station generates a dispatching switchboard to call the locomotive radio station audio signaling. The audio signaling of the locomotive radio station call dispatching switchboard received by the wireless communication unit 2 is shaped into square waves by sine waves through the audio signaling shaping circuit 17, and then is demodulated by the MCU of the main control unit, so that the audio signaling decoding function of the locomotive radio station call dispatching switchboard is realized.
The MCU11 is connected to the sub-audio modem 18 via a synchronous serial interface, the sub-audio modem 18 is used for modem sub-audio signaling; data communication between the master control unit 1 and the sub-audible modem 18 is achieved. The function of generating corresponding subaudio frequency signaling is realized when a station radio station calls equipment such as an adjacent station, a locomotive radio station, a portable station and the like in a 450MHz wireless communication state; the function of decoding the received subaudio frequency signaling when other wireless equipment in the system calls the station is realized.
The MCU11 is connected with the PTT controller 19 through the GPIO interface, the PTT controller 19 is connected with the wireless communication unit 2, and the PTT controller 19 is used for carrying out emission control on the wireless communication unit 2, so that the main control unit controls each channel machine to be in an emission state.
The MCU11 is connected with the carrier detection output end of each channel through the GPIO interface, and when each channel receives the corresponding wireless carrier signal, the MCU11 is informed by controlling the level of the GPIO interface, so that the function of each channel informing the main control unit that the channel is in a receiving state is realized.
The MCU11 is connected to the channel switching controller 110 through a parallel interface, the channel switching controller 110 is connected to the wireless communication unit 2, and the channel switching controller 110 is configured to perform channel switching control on the wireless communication unit 2, so as to implement channel switching control of the main control unit on the 450MHz channel unit.
As shown in fig. 3, the station radio station, the dispatching central office, the server, the relay device, the locomotive radio station, and the portable station form a wide-band and narrow-band integrated wireless train dispatching communication system, which is based on a trunking communication system implemented on a public network wireless network. The functions of vehicle-machine joint control, dispatching voice communication, train tail safety information transmission, wireless train number transmission and dispatching command service bearing are realized in the coverage range of the public network signal; meanwhile, the locomotive equipment can be positioned and monitored in real time.
Train wireless dispatch communication
The train wireless dispatching communication can realize mobile communication through an existing 450MHz communication system, and can also realize communication by switching to a public mobile wireless network in a tunnel or other weak field areas.
Based on public mobile network, the station radio station supports group calling based on the uniform numbering of the devices in the network, all station radio stations, locomotive radio stations and portable stations in the full-calling system, and performs the function of communication.
The station radio station receives calls of other station radio stations, locomotive radio stations or portable stations in the system and carries out conversation.
Based on the existing 450MHz wireless train tone communication network, the station radio station supports calling all locomotive radio stations and portable stations in the range of the station through subaudio signaling, and performs a communication function.
The station radio station receives the call of the locomotive radio station or the portable station within the range of the station and carries out conversation.
(1) Small triangle communication
When the locomotive runs to a tunnel or other 450MHz weak field areas, a driver can switch to the public mobile wireless network through the control box to selectively call certain station radio equipment. After receiving the data, the public mobile wireless network equipment in the tunnel or the base stations along the line uploads the data to the server through the TCP/IP network, and the server analyzes the data and then forwards the data to the appointed station radio station equipment which is in the same marshalling as the starting locomotive radio station equipment. And after receiving the data, the station radio equipment decompresses the data and restores the voice to complete one-time talkback calling conversation. Otherwise, the station attendant can selectively call the locomotive running into the tunnel through the station radio equipment.
(2) Large triangle communication
When the locomotive runs to a tunnel or other 450MHz weak field area, the dispatcher can realize the communication with a locomotive driver through the public network dispatching platform. The dispatcher selectively calls the locomotive equipment in the tunnel through the public network dispatching platform and uploads the locomotive equipment to the server through the TCP/IP network, the server analyzes the data and then forwards the data to the tunnel public network equipment or the base stations along the line near the locomotive equipment, and the tunnel public network equipment or the base stations along the line forwards the data to the specified locomotive radio station equipment in a wireless mode.
Train tail safety information transfer
The train tail safety protection system has a 450MHz and public network dual-mode communication mode. And the locomotive equipment and the train tail device carry out train tail information transmission in a dual-mode. When the locomotive runs to a tunnel or other 450MHz weak field areas, the locomotive equipment sends out train tail information inquiry in a public network mode, after receiving data, the public network equipment in the tunnel uploads the data to an exchange server through a TCP/IP network, and the server analyzes the data and forwards the data to a specified train tail device which is in the same group with the locomotive equipment. On the contrary, when the locomotive runs to the tunnel, the train tail device can also transmit the train tail alarm information through the public network.
Wireless train number transmission
When the TAX box controls the locomotive platform to transmit the train operation data, the locomotive platform wirelessly transmits information to a station data receiving decoder in a mode of 450MHz, and also wirelessly transmits train number information in a public mobile wireless network mode, after receiving the data along a line base station, the train number information is uploaded to a server through a TCP/IP network, and after analyzing the data, the server transmits the data to a designated IP user (CTC/TDCS) through a wired network.
Scheduling command wireless transmission
The wireless information of the dispatching command can be transmitted under the existing 450MHz mode, and the transmission of the dispatching command can also be realized through station radio equipment. When the CTC/TDCS center controls the station radio equipment to wirelessly send scheduling command data, the data is uploaded to the tunnel public mobile wireless network equipment or the line base station nearby the locomotive equipment through a TCP/IP network after the line base station receives the data, and the tunnel public mobile wireless network equipment or the line base station wirelessly forwards the data to the specified locomotive radio equipment.
The locomotive equipment wirelessly sends dispatching command automatic receipt and manual signing information in a public mobile wireless network form, the tunnel public mobile wireless network equipment or a base station along the line receives data and uploads the data to the server through a TCP/IP network, and the server analyzes the data and forwards the data to a designated IP user (CTC/TDCS) through a wired network.
It should be noted that the above summary and the detailed description are intended to demonstrate the practical application of the technical solutions provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the invention. The scope of the invention is to be determined by the appended claims.
Claims (8)
1. A radio train dispatching station radio station integrating wide band and narrow band integration is characterized by comprising a main control unit (1); wherein the content of the first and second substances,
the main control unit (1) is connected with the wireless communication unit (2), the wireless communication unit (2) is used for wireless communication with other station radio stations, locomotive radio stations, portable stations and relay equipment, and the wireless communication unit (2) comprises a public network mobile communication channel machine unit and a 450MHz channel machine unit;
the main control unit (1) is connected with a wired communication unit (3) through an FFSK modem (13) and a single audio frequency decoder (14), the wired communication unit (3) is used for wired communication with a dispatching switchboard and a monitoring switchboard, the FFSK modem (13) is used for modulating and demodulating call command data and detection command data, and the single audio frequency decoder (14) is used for identifying a pilot signal from the dispatching switchboard;
the main control unit (1) is connected with the audio unit (4), the audio unit (4) is respectively connected with the wireless communication unit (2), the wired communication unit (3), the TDCS interface unit (6) and the control box unit (8), and the audio unit (4) is used for providing audio transmission channels from the wired communication unit (3) to the control box unit (8), from the control box unit (8) to the wireless communication unit (2), from the wired communication unit (3) to the wireless communication unit (2) and from the TDCS interface unit (6) to the wireless communication unit (2);
the main control unit (1) is connected with the call signaling unit (5), the call signaling unit (5) is connected with the wireless communication unit (2), the call signaling unit (5) comprises an audio signaling shaping circuit (17) and a sub-audio modem (18), and the call signaling unit (5) is used for encoding and decoding audio signaling and sub-audio signaling of calling and called between other station radio stations, locomotive radio stations, portable stations and relay equipment;
the main control unit (1) is connected with the TDCS interface unit (6), and the TDCS interface unit (6) is used for controlling a station radio station to be in a transmitting state during the period of sending the dispatching command and forwarding the dispatching command;
the main control unit (1) is connected with the control box unit (8), and the control box unit (8) is used for carrying out data communication with the main control unit (1) so that the main control unit (1) responds to all key requests of the control box unit (8) and controls the indicator lights and the horn switches of the key requests;
the main control unit (1) is connected with the key display unit (7), and the key display unit (7) is used for setting parameters of the machine, testing performance indexes and indicating various working states.
2. The radio train dispatching station radio integrated with wide-band and narrow-band integration of claim 1, wherein the main control unit (1) comprises an MCU (11),
the MCU (11) is connected with the RS422 level converter (12), and the RS422 level converter (12) is connected with the control box unit (8);
the MCU (11) is connected with the FFSK modem (13) through a synchronous serial interface, and the MCU (11) is connected with the single audio decoder (14) through a GPIO interface;
the MCU (11) is connected with the TDCS interface unit (6) through a GPIO interface;
the MCU (11) is connected with an electronic switch (15) through a GPIO interface, the electronic switch (15) is connected with the audio unit (4), and the electronic switch (15) is used for controlling the on-off of each audio transmission channel of the audio unit (4);
the MCU (11) is connected with a key indicator lamp controller (16) through a synchronous serial interface, the key indicator lamp controller (16) is connected with the key display unit (7), and the key indicator lamp controller (16) is used for controlling the key display unit (7);
the MCU (11) is connected with the audio signaling shaping circuit (17) through an internal timer, and the audio signaling shaping circuit (17) is used for modulating and demodulating audio signaling; the MCU (11) is connected with a sub-tone modem (18) through a synchronous serial interface, and the sub-tone modem (18) is used for modulating and demodulating sub-tone signaling;
the MCU (11) is connected with the PTT controller (19) through the GPIO interface, the PTT controller (19) is connected with the wireless communication unit (2), and the PTT controller (19) is used for carrying out emission control on the wireless communication unit (2);
the MCU (11) is connected with a channel switching controller (110) through a parallel interface, the channel switching controller (110) is connected with the wireless communication unit (2), and the channel switching controller (110) is used for carrying out channel switching control on the wireless communication unit (2).
3. The wide-band and narrow-band integrated wireless train-dispatching station radio station as claimed in claim 1, wherein the audio signaling shaping circuit (17) is used for shaping the audio signaling square wave generated by the main control unit (1) into a sine wave or demodulating the audio signaling sine wave received by the wireless communication unit (2) into a square wave.
4. The wideband-narrowband integrated radio train station radio of claim 1, wherein the sub-tone modem (18) is configured to generate frequency accurate sub-tone signaling to call neighboring station radio, call locomotive radio, or decode sub-tone signaling to call station radio.
5. The wide-band and narrow-band integrated wireless train dispatching station radio station as claimed in claim 1, further comprising a power supply unit (9), wherein the power supply unit (9) is an AC 220V-DC13.8V power supply voltage stabilizing module for providing stable and reliable DC13.8V working voltage for each unit of the station radio station.
6. The radio train dispatching station integrated with wide-band and narrow-band integration of claim 1, wherein the public network mobile communication channel unit is an interphone terminal with a public network talkback function, and the 450MHz channel unit is a 450MHz channel machine.
7. The radio train dispatching station radio station integrated with wide-band and narrow-band integration of claim 1, wherein the key display unit (7) comprises an intelligent display driving chip, a high-brightness digital tube, an LED indicator light and a high-sensitivity key; the main control unit (1) is connected with the intelligent display driving chip, the intelligent display driving chip is connected with the high-brightness nixie tube, the LED indicating lamps and the keys, so that the intelligent display driving chip drives the 4-digit high-brightness nixie tube, the 6 LED indicating lamps and the keys.
8. The radio train dispatching station radio station integrated with wide-band and narrow-band integration of claim 1, characterized in that the TDCS interface unit (6) comprises a level control circuit and a second audio circuit, the level control circuit is connected with the main control unit (1), the level control circuit is used for controlling the station radio station to be in a transmitting state during the dispatching command sending period and forwarding the dispatching command by the radio communication unit (2), and the second audio circuit is connected with the audio unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325834.6A CN114039620A (en) | 2021-11-10 | 2021-11-10 | Wide-narrow band integration wireless train dispatching station radio station |
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|---|---|---|---|
| CN202111325834.6A CN114039620A (en) | 2021-11-10 | 2021-11-10 | Wide-narrow band integration wireless train dispatching station radio station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116366087A (en) * | 2023-05-30 | 2023-06-30 | 天津七一二移动通信有限公司 | Station antenna feeder system of railway train shunting station and implementation method |
| CN116419182A (en) * | 2023-05-31 | 2023-07-11 | 泉州市铁通电子设备有限公司 | Digital wireless train-tuning multimode locomotive radio station and operation communication method thereof |
-
2021
- 2021-11-10 CN CN202111325834.6A patent/CN114039620A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116366087A (en) * | 2023-05-30 | 2023-06-30 | 天津七一二移动通信有限公司 | Station antenna feeder system of railway train shunting station and implementation method |
| CN116366087B (en) * | 2023-05-30 | 2023-10-27 | 天津七一二移动通信有限公司 | Station antenna feeder system of railway train shunting station and implementation method |
| CN116419182A (en) * | 2023-05-31 | 2023-07-11 | 泉州市铁通电子设备有限公司 | Digital wireless train-tuning multimode locomotive radio station and operation communication method thereof |
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