A wide-band and narrow-band integrated wireless train dispatching station radio

Abstract

This invention provides a broadband and narrowband integrated wireless train dispatching station radio, comprising a main control unit, a wireless communication unit, a wired communication unit, an audio unit, a call signaling unit, a TDCS interface unit, a keypad display unit, a control box unit, and a power supply unit. The main control unit is connected to the wireless communication unit via the call signaling unit. The wireless communication unit includes a public network mobile communication channel unit and a 450MHz channel unit. The call signaling unit includes an audio signaling shaping circuit and a sub-audio modem. The main control unit is connected to the wired communication unit via an FFSK modem and a single-audio decoder. This invention employs a dual-mode operation, where both wireless communication methods operate independently without interference. While maintaining good compatibility with existing wireless train dispatching communication systems, it effectively improves the communication efficiency, security, and reliability of the wireless train dispatching station radio, while reducing system construction costs.

Description

Technical Field

[0001] This invention relates to the field of railway locomotive communication equipment technology, and more specifically, to a broadband and narrowband integrated wireless train dispatching station radio. Background Technology

[0002] In my country, railway transportation plays a crucial role in both passenger and freight transport. With the rapid development of railway operations, trains are carrying larger and faster, increasing capacity while placing higher demands on the efficiency, safety, and reliability of railway wireless train dispatching communication equipment.

[0003] Traditional station radios use 450MHz wireless communication, which has problems such as the ability to receive and transmit information at the same frequency, poor communication security, and severe co-channel interference. In addition, in order to improve communication reliability, multiple anti-interference devices need to be added to the transmission link, and in order to increase communication distance and eliminate communication blind spots, multiple relay devices need to be set up, resulting in high system construction costs. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention aims to provide a wide and narrow band integrated wireless train dispatch station radio to overcome the defects in the prior art.

[0005] To achieve the above objectives, this invention provides a broadband and narrowband integrated wireless train dispatching station radio, including a main control unit. The main control unit is connected to a wireless communication unit, which is used for wireless communication with other station radios, locomotive radios, portable radios, and relay devices. The wireless communication unit includes a public network mobile communication channel unit and a 450MHz channel unit. The main control unit is connected to a wired communication unit via an FFSK modem and a single-tone decoder. The wired communication unit is used for wired communication with the dispatching switchboard and the monitoring switchboard. The FFSK modem is used for modulation and demodulation of call command data and detection command data, and the single-tone decoder is used to identify pilot signals from the dispatching switchboard. The main control unit is also connected to an audio unit, which is connected to the wireless communication unit, the wired communication unit, the TDCS interface unit, and the control box unit. The audio unit provides communication between the wired communication unit and the control box unit, and between the control box unit and the wireless communication unit. The system includes: an audio transmission channel between the wired communication unit and the wireless communication unit, and between the TDCS interface unit and the wireless communication unit; a main control unit connected to a call signaling unit, which in turn is connected to the wireless communication unit. The call signaling unit includes an audio signaling shaping circuit and a sub-audio modem, and is used to encode and decode audio and sub-audio signals for calls and calls between the main control unit and other station radios, locomotive radios, portable radios, and relay equipment; a main control unit connected to a TDCS interface unit, which is used to control the station radios to be in transmit mode during dispatch command transmission and to forward dispatch commands; a main control unit connected to a control box unit, which is used to communicate data with the main control unit to enable the main control unit to respond to all button requests from the control box unit and to control its indicator lights and horn switches; and a main control unit connected to a button display unit, which is used for setting local parameters, testing performance indicators, and indicating various operating statuses.

[0006] The above technical solution integrates high-speed public network broadband mobile communication with 450MHz private network narrowband wireless communication based on 2G / 3G / 4G high-speed public network mobile communication technology. It adopts a working mode in which both wireless communication methods are used simultaneously. The various working modes do not interfere with each other when the equipment is working. While maintaining good compatibility with the existing wireless train dispatch communication system, it effectively improves the communication efficiency, communication security and reliability of wireless train dispatch station radios, and reduces the system construction cost.

[0007] As a further explanation of the broadband and narrowband integrated wireless train dispatch station radio described in this invention, preferably, the main control unit includes an MCU, which is connected to an RS422 level converter, and the RS422 level converter is connected to a control box unit; the MCU is connected to an FFSK modem via a synchronous serial interface, and to a single-tone decoder via a GPIO interface; the MCU is connected to a TDCS interface unit via a GPIO interface; the MCU is connected to an electronic switch via a GPIO interface, and the electronic switch is connected to an audio unit, which controls the switching of each audio transmission channel of the audio unit; the MCU is connected to a button indicator controller via a synchronous serial interface, and the button indicator controller... The MCU is connected to the keypad display unit, and the keypad indicator controller is used to control the keypad display unit; the MCU is connected to the audio signaling shaping circuit through its internal timer, and the audio signaling shaping circuit is used to modulate and demodulate audio signaling; the MCU is connected to the sub-audio modem through a synchronous serial interface, and the sub-audio modem is used to modulate and demodulate sub-audio signaling; the MCU is connected to the PTT controller through a GPIO interface, and the PTT controller is connected to the wireless communication unit, and the PTT controller is used to control the transmission of the wireless communication unit; the MCU is connected to the channel switching controller through a parallel interface, and the channel switching controller is connected to the wireless communication unit, and the channel switching controller is used to control the channel switching of the wireless communication unit.

[0008] Through the above technical solution, the MCU of the main control unit is built using the high-speed, low-power Cygnal C8051F series microprocessor. This hardware platform enables high-speed data processing and efficiently realizes various communication functions of the station radio. The C8051F series microcontroller is a fully integrated mixed-signal system-on-a-chip (SoC) with an 8051-compatible microcontroller core and full compatibility with the MCS-51 instruction set. In addition to standard 8051 digital peripherals, it integrates commonly used analog components and other digital peripherals and functional components in data acquisition and control systems, such as a 12-bit 8-channel AD converter, two 12-bit D / A converters, SPI, I2C, and two UART serial interfaces. It is a highly integrated, stable, and reliable embedded microprocessor chip. The MCU of the main control unit controls each component to operate according to functional requirements and responds promptly to button operations and communication requests from the control box.

[0009] As a further explanation of the wide and narrow band integrated wireless train dispatch station radio described in this invention, preferably, the audio signaling shaping circuit is used to shape the audio signaling square wave generated by the main control unit into a sine wave, or to demodulate the audio signaling sine wave received by the wireless communication unit into a square wave.

[0010] Through the above technical solution, the internal timer function of the MCU in the main control unit generates an audio signaling square wave, which is then shaped into a sine wave by the audio signaling shaping circuit and sent to the wireless communication unit for wireless transmission, realizing the generation of audio signaling from the station radio to the dispatching switchboard to the locomotive radio. The audio signaling from the locomotive radio to the dispatching switchboard received by the wireless communication unit is shaped from a sine wave to a square wave by the audio signaling shaping circuit, and then demodulated by the MCU in the main control unit, realizing the decoding function of the audio signaling from the locomotive radio to the dispatching switchboard.

[0011] As a further explanation of the broadband and narrowband integrated wireless train dispatch station radio described in this invention, preferably, the sub-audio modem is used to generate frequency-accurate sub-audio signaling for calling neighboring station radios, calling locomotive radios, or decoding sub-audio signaling for calling station radios.

[0012] Through the above technical solution, when the station radio wirelessly calls neighboring stations, locomotive radios, portable radios, and other devices in 450MHz wireless communication mode, the sub-audio modem generates corresponding sub-audio signaling; and when other wireless devices in the system call the station radio, the sub-audio modem decodes the received sub-audio signaling.

[0013] As a further explanation of the broadband and narrowband integrated wireless train dispatch station radio described in this invention, preferably, the wired communication unit also has a circuit for receiving and transmitting audio signals from the dispatching switchboard, realizing the communication function between the station radio and the dispatching switchboard, and realizing the function of the station radio forwarding the voice communication between the dispatching switchboard and the locomotive radio.

[0014] As a further explanation of the wide and narrow band integrated wireless train dispatch station radio described in this invention, preferably, it also includes a power supply unit, which is an AC220V to DC13.8V power regulator module, used to provide a stable and reliable DC13.8V operating voltage for each unit of the station radio.

[0015] As a further explanation of the broadband and narrowband integrated wireless train dispatching station radio described in this invention, preferably, the public network mobile communication channel unit is a walkie-talkie terminal with public network intercom function, and the 450MHz channel unit is a 450MHz channel unit.

[0016] Through the above technical solution, based on the 2G / 3G / 4G / 5G mobile public network trunking service platform, the public network mobile communication channel unit adopts a walkie-talkie terminal with public network intercom function, and uses the public network intercom dispatch platform service to provide users with half-duplex trunking communication services within the mobile network coverage area.

[0017] As a further explanation of the wide- and narrow-band integrated wireless train dispatching station radio described in this invention, preferably, the button display unit includes an intelligent display driver chip, a high-brightness digital tube, LED indicator lights, and high-sensitivity buttons; the main control unit is connected to the intelligent display driver chip, and the intelligent display driver chip is connected to the high-brightness digital tube, the LED indicator lights, and the buttons, so that the intelligent display driver chip drives the 4-digit high-brightness digital tube, the 6 LED indicator lights, and the buttons.

[0018] The above technical solution enables communication between the intelligent display driver chip and the main control unit MCU, realizes the function of setting the station radio's own parameters and testing its performance indicators, indicates various working states of the host, and can complete the display control of digital tubes and LED indicators as well as the function of key scanning.

[0019] As a further explanation of the broadband and narrowband integrated wireless train dispatch station radio described in this invention, 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 and is used to control the station radio to be in a transmitting state during the transmission of dispatch commands, and the dispatch commands are forwarded by the wireless communication unit. The second audio circuit is connected to the audio unit.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention is based on 2G / 3G / 4G high-speed public network mobile communication technology, integrating high-speed public network broadband mobile communication with 450MHz private network narrowband wireless communication. It adopts a working mode in which both wireless communication methods are used simultaneously. When the device is working, the various working modes do not affect each other. While being well compatible with the existing wireless train dispatch communication system, it effectively improves the communication efficiency, communication security and reliability of wireless train dispatch station radios.

[0022] 2. In this invention, public network digital mobile communication relies on public mobile wireless networks, mobile signal coverage area, communication distance is not limited, call quality is clear and sound reproduction is high, communication data has encryption function, communication confidentiality is strong, effectively improving communication efficiency and reliability, and because there is no need to set up base stations or other relay equipment, the system construction cost is effectively reduced. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the integrated wide and narrow band wireless train dispatching station radio of the present invention.

[0024] Figure 2 This is a connection diagram of the main control unit of the present invention.

[0025] Figure 3This is a schematic diagram of a broadband and narrowband integrated wireless train dispatch communication system. Detailed Implementation

[0026] To further understand the structure, features, and other objectives of the present invention, a detailed description is provided below with reference to the accompanying drawings. The embodiments illustrated in these drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0027] like Figure 1 As shown, a broadband and narrowband integrated wireless train dispatching station radio includes 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.

[0028] The main control unit 1 is connected to the wireless communication unit 2, which is used for wireless communication with other station radios, locomotive radios, portable radios, and relay equipment. The wireless communication unit 2 includes a public network mobile communication channel unit and a 450MHz channel unit, respectively carrying public network mobile communication and 450MHz wireless mobile communication. Based on a 2G / 3G / 4G / 5G mobile public network trunking service platform, the public network mobile communication channel unit uses a walkie-talkie terminal with public network intercom functionality, utilizing the public network intercom dispatch platform service to provide users with half-duplex trunking communication services within the mobile network coverage area. The 450MHz channel unit is a 450MHz channel unit.

[0029] The main control unit 1 is connected to the wired communication unit 3 via an FFSK modem 13 and a single-tone decoder 14. 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, low-power FFSK modem chip to modulate and demodulate call command data and detection command data, enabling the transmission of call command data between the dispatching switchboard and the station radio, and the transmission of monitoring command data between the monitoring switchboard and the station radio. The single-tone decoder 14 uses a low-power, high-accuracy single-tone decoding chip to identify pilot signals from the dispatching switchboard, enabling the station radio to accurately identify the pilot signals sent by the dispatching switchboard, and enabling the dispatching switchboard to control the station radio to be in transmission mode. The wired communication unit 3 also has circuits for receiving and transmitting audio signals from the dispatching switchboard, enabling the station radio to communicate with the dispatching switchboard and to relay voice communication between the dispatching switchboard and the locomotive radio.

[0030] The main control unit 1 is connected to the audio unit 4. The audio unit 4 is connected to the wireless communication unit 2, the wired communication unit 3, the TDCS interface unit 6, and the control box unit 8. The audio unit 4 provides 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 function of adjusting the audio amplitude and controlling the channel switching with an electronic switch. The audio channel from the wired communication unit 3 to the control box unit 8 enables the communication function between the dispatch switchboard and the station radio; the audio channel from the control box unit 8 to the wireless communication unit 2 enables the communication function between the station radio and the radio stations of neighboring stations, locomotive radios, and portable radios; the audio channel from the wired communication unit 3 to the wireless communication unit 2 enables the station radio to relay the communication function between the dispatch switchboard and the locomotive radio; and the audio channel from the TDCS interface unit 6 to the wireless communication unit 2 enables the station radio to relay dispatch commands.

[0031] The main control unit 1 is connected to the call signaling unit 5, which in turn is connected to the wireless communication unit 2. The call signaling unit 5 is used to encode and decode audio and sub-audio signals for calls and calls between other station radios, locomotive radios, portable radios, and relay equipment. In the 450MHz wireless train dispatch communication system, different audio or sub-audio signals are used to distinguish the called equipment during wireless device calls. The call signaling unit 5 includes an audio signaling shaping circuit 17 and a sub-audio modem 18. The audio signaling shaping circuit 17 is used to shape the square wave of the audio signaling generated by the main control unit 1 into a sine wave and send it to the wireless unit for wireless transmission, thereby generating and transmitting audio signals for the dispatching switchboard to call the locomotive radio; or it can demodulate the sine wave of the audio signaling received by the wireless communication unit 2 from the locomotive radio to call the dispatching switchboard into a square wave, which is then demodulated by the main control unit to achieve the audio signaling decoding function. The sub-audio modem 18 uses a high-precision sub-audio modem chip CMX808. The sub-audio modem 18 is used to generate sub-audio signaling with accurate frequency for calling nearby station radios, calling locomotive radios, or decoding sub-audio signaling for calling station radios.

[0032] The main control unit 1 is connected to the TDCS interface unit 6. The TDCS interface unit 6 is used to control the station radio to be in a transmitting state during the transmission of dispatch commands and to forward the dispatch commands. The TDCS interface unit 6 includes a level control circuit and a second audio circuit. The level control circuit is connected to the main control unit 1 and is used to control the station radio to be in a transmitting state during the transmission of dispatch commands, and the dispatch commands are forwarded by the wireless communication unit 2. The second audio circuit is connected to the audio unit 4.

[0033] The main control unit 1 is connected to the control box unit 8. The control box unit 8 is used for data communication with the main control unit 1, so that the main control unit 1 can respond to all button requests from the control box unit 8, as well as control its indicator lights and speaker switches. The control box mainly includes a button and indicator light unit, a main control unit, an audio unit, a power supply unit, etc.

[0034] The main control unit 1 is connected to the button display unit 7, which is used for setting machine parameters, testing performance indicators, and indicating various working statuses. The button display unit 7 includes an intelligent display driver chip, a high-brightness digital tube, LED indicators, and high-sensitivity buttons. The main control unit 1 is connected to the intelligent display driver chip, which in turn is connected to the high-brightness digital tube, the LED indicators, and the buttons, enabling the intelligent display driver chip to drive the 4-digit high-brightness digital tube, the 6 LED indicators, and the buttons. A single chip can complete the display control of the digital tube and LED indicators, as well as the button scanning function.

[0035] The station radio also includes a power supply unit 9, which is an AC220V to DC13.8V power regulator module used to provide a stable and reliable DC13.8V operating voltage for each unit of the station radio.

[0036] The main control unit controls the walkie-talkie to enter the transmitting state and can send the audio signal sent by the audio unit. When the walkie-talkie is in the receiving state, it notifies the main control unit that it is in the receiving state. At this time, the wirelessly received audio signal is sent to the audio unit for amplitude adjustment and then sent to the corresponding communication channel to realize the wireless public network mobile communication function between the station radio and other station radios, locomotive radios, and portable radios, and to realize the wireless communication function of transferring dispatch commands and locomotive radios.

[0037] The main control unit performs channel control on the 450MHz channel receiver, enabling channel switching. The main control unit controls the 450MHz channel receiver to enter transmit mode, at which point it can transmit either the sub-audio signal output by the sub-audio unit or the audio signal output by the audio unit. When the 450MHz channel receiver is in receive mode, it notifies the main control unit that it is in receive mode. The 450MHz channel receiver demodulates the sub-audio signal from the radio carrier signal and sends it to the sub-audio unit for demodulation. The demodulated audio signal is then sent to the audio unit for amplitude adjustment before being sent to the corresponding audio channel, thus enabling 450MHz wireless communication between the station radio and the intercom / locomotive radio.

[0038] Based on 2G / 3G / 4G high-speed public network mobile communication technology, this device integrates high-speed public network broadband mobile communication with 450MHz private network narrowband wireless communication. It adopts a working mode in which both wireless communication methods are used simultaneously. During operation, the various working modes do not interfere with each other. While maintaining good compatibility with existing wireless train dispatch communication systems, it effectively improves the communication efficiency, security, and reliability of wireless train dispatch station radios.

[0039] like Figure 2 As shown, the main control unit 1 includes an MCU 11, which is connected to an RS422 level converter 12. The RS422 level converter 12 is connected to the control box unit 8. The control box unit 8 communicates with the main control unit 1 to enable the host to respond to all button requests on the control box and to control the indicator lights and speaker switches on the control box.

[0040] MCU11 is connected to FFSK modem 13 via synchronous serial interface and to single-tone decoder 14 via GPIO interface; thus realizing the communication function between main control unit 1 and FFSK modem 13 and realizing signaling data transmission between dispatch switchboard and station radio.

[0041] MCU11 is connected to TDCS interface unit 6 via GPIO interface; enabling communication between TDCS interface unit 6 and main control unit 1, and realizing the function of controlling the station radio to be in the transmitting state and forwarding the dispatch command during the dispatch command transmission period of the dispatch command TDCS.

[0042] MCU11 is connected to electronic switch 15 via GPIO interface. Electronic switch 15 is connected to audio unit 4. Electronic switch 15 is used to control the switching of each audio transmission channel of audio unit 4.

[0043] MCU11 is connected to key indicator controller 16 via a synchronous serial interface. Key indicator controller 16 is connected to key display unit 7. Key indicator controller 16 is used to control key display unit 7. It realizes data communication between main control unit 1 and key indicator controller 16, realizes real-time scanning of keys on the station radio host panel and control of digital tube and indicator display, and realizes station radio parameter setting and function debugging functions.

[0044] MCU11 is connected to audio signaling shaping circuit 17 via an internal timer. Audio signaling shaping circuit 17 is used for modulation and demodulation of audio signaling. The internal timer function of the MCU in the main control unit generates a square wave for audio signaling, which is then shaped into a sine wave by the audio signaling shaping circuit 17 and sent to the wireless communication unit 2 for wireless transmission, realizing the generation of audio signaling from the station radio to the dispatching switchboard to the locomotive radio. The audio signaling from the locomotive radio to the dispatching switchboard received by the wireless communication unit 2 is shaped from a sine wave into a square wave by the audio signaling shaping circuit 17, and then demodulated by the MCU in the main control unit, realizing the decoding function of the audio signaling from the locomotive radio to the dispatching switchboard.

[0045] MCU11 is connected to sub-audio modem 18 via a synchronous serial interface. Sub-audio modem 18 is used for modulation and demodulation of sub-audio signaling, enabling data communication between main control unit 1 and sub-audio modem 18. It generates corresponding sub-audio signaling when the station radio wirelessly calls neighboring stations, locomotive radios, portable radios, etc., in 450MHz wireless communication mode; and decodes received sub-audio signaling when other wireless devices in the system call the station radio.

[0046] MCU11 is connected to PTT controller 19 via GPIO interface. PTT controller 19 is connected to wireless communication unit 2. PTT controller 19 is used to control the transmission of wireless communication unit 2, so that the main control unit can control each channel unit to be in the transmission state.

[0047] The MCU11 is connected to the carrier detection output of each channel unit through the GPIO interface. When each channel unit receives the corresponding wireless carrier signal, it will notify the MCU11 by controlling the level of the GPIO interface, thereby realizing the function of each channel unit notifying the main control unit that it is in the receiving state.

[0048] MCU11 is connected to channel switching controller 110 via a parallel interface. Channel switching controller 110 is connected to wireless communication unit 2. Channel switching controller 110 is used to control channel switching of wireless communication unit 2, so as to realize the main control unit's channel switching control of 450MHz channel unit.

[0049] like Figure 3 As shown, the aforementioned station radios, along with the dispatching switchboard, server, relay equipment, locomotive radios, and portable radios, form a broadband and narrowband integrated wireless train dispatching communication system, a trunked communication system implemented on a public wireless network. Within the public network signal coverage area, it enables vehicle-to-vehicle control, dispatching voice communication, transmission of safety information at the rear of the train, wireless train number transmission, and dispatching command services; simultaneously, it allows for real-time positioning and monitoring of locomotive equipment.

[0050] Train wireless dispatch communication

[0051] Train wireless dispatch communication can achieve mobile communication through the existing 450MHz communication system, and can also switch to the public mobile wireless network to achieve communication in tunnels or other weak field areas.

[0052] Based on the public mobile network, the station radio supports group calls and all station radios, locomotive radios, and portable radios within the network system based on the unified device number, and also enables call functionality.

[0053] The station radio receives calls from other station radios, locomotive radios, or portable radios within the system and conducts conversations.

[0054] Based on the existing 450MHz wireless train dispatching communication network, the station radio supports calling all locomotive radios and portable radios within the station area via sub-audio signaling and conducting conversations.

[0055] The station radio receives calls from locomotive radios or portable radios within the station area and conducts conversations.

[0056] (1) Small triangle communication

[0057] When a locomotive is running in a tunnel or other area with weak 450MHz signal strength, the driver can switch to a public mobile wireless network via the control box to selectively call a station radio device. After receiving the data, the public mobile wireless network device in the tunnel or a base station along the line uploads it to the server via the TCP / IP network. The server analyzes the data and forwards it to the designated station radio device in the same train as the originating locomotive radio device. Upon receiving the data, the station radio device decompresses the data to restore the voice, completing a walkie-talkie call. Conversely, the station duty officer can also selectively call a locomotive running in the tunnel via the station radio device.

[0058] (2)Big Triangle Communication

[0059] When a locomotive is operating in a tunnel or other area with weak 450MHz signal strength, the dispatcher can communicate with the locomotive driver through the public network dispatch platform. After the dispatcher selects the locomotive equipment in the tunnel through the public network dispatch platform, the data is uploaded to the server via TCP / IP network. The server analyzes the data and forwards it to the public network equipment in the tunnel or the base station along the line near the locomotive equipment. The public network equipment in the tunnel or the base station along the line then wirelessly forwards the data to the designated locomotive radio equipment.

[0060] Train rear safety information transmission

[0061] The train's rear safety protection system features dual-mode communication via 450MHz and the public network. The locomotive equipment and the rear-end device transmit rear-end information in dual-mode. When the locomotive enters a tunnel or other area with weak 450MHz signal strength, the locomotive equipment sends a rear-end information query via the public network. Upon receiving the data, the public network device in the tunnel uploads it to the switching server via TCP / IP. The server analyzes the data and forwards it to the designated rear-end device within the same train formation as the initiating locomotive. Conversely, when the locomotive enters a tunnel, the rear-end device can also transmit rear-end alarm information via the public network.

[0062] Wireless train number transmission

[0063] When the TAX box controls the locomotive radio to forward train operation data, in addition to wirelessly transmitting information to the station data receiver decoder in the existing 450MHz mode, the locomotive radio also wirelessly sends the train number information in the form of public mobile wireless network. After receiving the data, the base stations along the line upload it to the server through the TCP / IP network. After analyzing the data, the server forwards the data to the designated IP user (CTC / TDCS) through the wired network.

[0064] Dispatch command wireless transmission

[0065] In addition to the existing 450MHz mode, dispatch command wireless information can also be transmitted via station radio equipment. When the CTC / TDCS center controls the station radio equipment to wirelessly transmit dispatch command data, the base stations along the line receive the data and upload it via TCP / IP network to the tunnel public mobile wireless network equipment or the base stations along the line near the locomotive equipment. The tunnel public mobile wireless network equipment or the base stations along the line then wirelessly forward the data to the designated locomotive radio equipment.

[0066] The locomotive equipment wirelessly transmits dispatch commands, automatic receipts, and manual signature information via public mobile wireless networks. After receiving the data, the public mobile wireless network equipment in the tunnel or the base station along the line uploads it to the server via the TCP / IP network. After analyzing the data, the server forwards it to the designated IP user (CTC / TDCS) via the wired network.

[0067] It should be stated that the above-described invention content and specific embodiments are intended to demonstrate the practical application of the technical solution provided by this invention and should not be construed as limiting the scope of protection of this invention. Those skilled in the art can make various modifications, equivalent substitutions, or improvements within the spirit and principles of this invention. The scope of protection of this invention is defined by the appended claims.

Claims

1. A broadband and narrowband integrated wireless train dispatching station radio, characterized in that, Includes the main control unit (1); wherein, The main control unit (1) is connected to the wireless communication unit (2). The wireless communication unit (2) is used for wireless communication with other station radios, locomotive radios, portable radios and relay equipment. The wireless communication unit (2) includes a public network mobile communication channel unit and a 450MHz channel unit. The main control unit (1) is connected to the wired communication unit (3) through the FFSK modem (13) and the single-tone decoder (14). The wired communication unit (3) is used for wired communication with the dispatch switchboard and the monitoring switchboard. The FFSK modem (13) is used for modulation and demodulation of call command data and detection command data. The single-tone decoder (14) is used to identify pilot signals from the dispatch switchboard. The main control unit (1) is connected to the audio unit (4). The audio unit (4) is connected to the wireless communication unit (2), the wired communication unit (3), the TDCS interface unit (6), and the control box unit (8) respectively. The audio unit (4) is used to provide 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 function of adjusting the audio amplitude and controlling the channel switch with an electronic switch. The main control unit (1) is connected to the call signaling unit (5), and the call signaling unit (5) is connected to the wireless communication unit (2). The call signaling unit (5) includes an audio signaling shaping circuit (17) and a sub-audio modem (18). The call signaling unit (5) is used to encode and decode the audio signaling and sub-audio signaling of calls and calls between other station radios, locomotive radios, portable radios, and relay equipment. The audio signaling shaping circuit (17) is used to shape the square wave of the audio signaling generated by the main control unit (1) into a sine wave, or to demodulate the sine wave of the audio signaling received by the wireless communication unit (2) into a square wave. The sub-audio modem (18) is used to generate sub-audio signaling with accurate frequency for calling neighboring station radios or calling locomotive radios, or to decode sub-audio signaling for calling station radios. The main control unit (1) is connected to the TDCS interface unit (6). The TDCS interface unit (6) includes a level control circuit and a second audio circuit. The level control circuit is connected to the main control unit (1). The level control circuit is used to control the station radio to be in the transmission state during the transmission of dispatch commands, and the dispatch commands are forwarded by the wireless communication unit (2). The second audio circuit is connected to the audio unit (4). The main control unit (1) is connected to the control box unit (8). The control box unit (8) is used to communicate data with the main control unit (1) so that the main control unit (1) can respond to all key requests of the control box unit (8) and control its indicator lights and horn switches. The main control unit (1) is connected to the key display unit (7), which is used for setting machine parameters, testing performance indicators and indicating various working statuses.

2. The broadband and narrowband integrated wireless train dispatching station radio as described in claim 1, characterized in that, The main control unit (1) includes an MCU (11), The MCU (11) is connected to the RS422 level converter (12), and the RS422 level converter (12) is connected to the control box unit (8); The MCU (11) is connected to the FFSK modem (13) via a synchronous serial interface, and the MCU (11) is connected to the single audio decoder (14) via a GPIO interface; The MCU (11) is connected to the TDCS interface unit (6) via the GPIO interface; The MCU (11) is connected to the electronic switch (15) via the GPIO interface. The electronic switch (15) is connected to the audio unit (4). The electronic switch (15) is used to control the switching of each audio transmission channel of the audio unit (4). The MCU (11) is connected to the key indicator controller (16) via a synchronous serial interface. The key indicator controller (16) is connected to the key display unit (7). The key indicator controller (16) is used to control the key display unit (7). The MCU (11) is connected to the audio signaling shaping circuit (17) through an internal timer. The audio signaling shaping circuit (17) is used to modulate and demodulate audio signaling. The MCU (11) is connected to the sub-audio modem (18) through a synchronous serial interface. The sub-audio modem (18) is used to modulate and demodulate sub-audio signaling. The MCU (11) is connected to the PTT controller (19) via the GPIO interface. The PTT controller (19) is connected to the wireless communication unit (2). The PTT controller (19) is used to control the transmission of the wireless communication unit (2). The MCU (11) 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). The channel switching controller (110) is used to perform channel switching control on the wireless communication unit (2).

3. The broadband and narrowband integrated wireless train dispatching station radio as described in claim 1, characterized in that, It also includes a power supply unit (9), which is an AC220V to DC13.8V power regulator module used to provide a stable and reliable DC13.8V working voltage for each unit of the station radio.

4. The broadband and narrowband integrated wireless train dispatching station radio as described in claim 1, characterized in that, The public network mobile communication channel unit is a walkie-talkie terminal with public network intercom function, and the 450MHz channel unit is a 450MHz channel unit.

5. The broadband and narrowband integrated wireless train dispatching station radio as described in claim 1, characterized in that, The button display unit (7) includes an intelligent display driver chip, a high-brightness digital tube, LED indicator lights, and a high-sensitivity button; the main control unit (1) is connected to the intelligent display driver chip, and the intelligent display driver chip is connected to the high-brightness digital tube, the LED indicator lights, and the button, so that the intelligent display driver chip drives the 4-digit high-brightness digital tube, the 6 LED indicator lights, and the button.

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