CN212289874U - Railway digital train dispatching station radio station - Google Patents
Railway digital train dispatching station radio station Download PDFInfo
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- CN212289874U CN212289874U CN202020723778.6U CN202020723778U CN212289874U CN 212289874 U CN212289874 U CN 212289874U CN 202020723778 U CN202020723778 U CN 202020723778U CN 212289874 U CN212289874 U CN 212289874U
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Abstract
The utility model discloses a railway digit train dispatching station radio station, this radio station include electrical unit, main control unit and digital channel machine. Filtering and rectifying external power supply through a power supply unit, and converting voltage into DC13.8V power supply inside the equipment; wirelessly receiving and transmitting 400MHz digital system train modulation communication data and voice through a digital channel machine; the digital channel machine is controlled and managed through the main control unit, and data and voice communication is carried out between the digital channel machine and an external operation display terminal, a dispatching and monitoring extension machine and a dispatching switchboard. The utility model discloses a 400MHz digital standard railway is wireless to be listed as transfers communication function.
Description
Technical Field
The utility model relates to a station radio station, in particular to possess 400MHz digital standard railway wireless train dispatching station radio station of dispatching communication function.
Background
The railway wireless train dispatching system is mature in China and used for many years, and plays an important role in guaranteeing driving safety. At present, wireless communication of 450M analog system and GSM-R system is mainly used in the railway wireless train dispatching system in China. With the development of the railway wireless train dispatching communication technology and the application requirements of train communication equipment, China is promoting the digital talkback technology comprehensively, and requires users such as railways to transfer the original 450MHz frequency band service to public interphone frequency points or other interphone frequency points conforming to the planning. In the railway wireless train dispatching system, 450MHz analog system wireless communication is upgraded to 400MHz digital system wireless communication, and a station radio station of 400MHz digital system needs to be supported.
SUMMERY OF THE UTILITY MODEL
In view of the problem that prior art exists, in order to satisfy the wireless train dispatching system equipment of railway and upgrade to digital standard demand by analog standard, the station radio station in the wireless train dispatching system needs to be upgraded to 400MHz digital standard, the utility model provides a railway digital train dispatching station radio station.
The utility model adopts the technical proposal that: the utility model provides a railway digit train dispatching station radio station which characterized in that: the system comprises a power supply unit, a main control unit and a TK-868GD type digital channel machine; the input end of the power supply unit is connected with an external AC 220V power supply interface, and the output end of the power supply unit is connected with the main control unit and the digital channel machine power supply interface; the main control unit is connected with an ACC interface of the digital channel machine, an external operation display terminal, a monitoring and dispatching extension machine and a dispatching switchboard in a bidirectional mode, and an antenna interface of the digital channel machine is connected with an external locomotive antenna.
The power supply unit comprises a FLAC12D-3WE type power supply filter, a KBJ608 type bridge stack and a PH150A280-15 type power supply module; the input end of the power filter is connected with an external AC 220V power supply, the output end of the power filter is connected with the input end of the bridge rectifier, the input end of the power module is connected with the output end of the bridge rectifier, and the output end of the power module is connected with the power supply interface of the digital channel machine and the main control unit.
The main control unit comprises an LM22670 type switching power supply chip, an SPX1117-3.3 type first LDO power supply chip, an LP5907MFX-1.8 type second LDO power supply chip, an MAX490E type RS-422 interface chip, an SN65HVD75 type RS-485 interface chip, a TLV320AIC3106C type Codec chip, an LPC4337 type ARM processor chip, a DP83848I type Ethernet PHY chip and an HX1188NL type network transformer; the input end of the switching power supply chip is connected with the power supply input end of DC13.8V, and the output end of the switching power supply chip is connected with the DC 5V power supply interface of the main control unit; the input end of the first LDO power supply chip is connected with a DC 5V power supply interface, and the output end of the first LDO power supply chip is connected with a main control unit DC 3.3V power supply interface; the input end of the second LDO power supply chip is connected with a DC 5V power supply interface, and the output end of the second LDO power supply chip is connected with a main control unit DC 1.8V power supply interface; the network end of the network transformer is connected with an external dispatching switchboard, and the chip end is connected with an Ethernet PHY chip PDM interface; the Ethernet PHY chip MAC interface is connected with an ARM processor chip ENET interface; the 422 end of the RS-422 interface chip is connected with an external monitoring extension, and the TTL end is connected with an UART3 interface of the ARM processor chip; the 485 end of the RS-485 interface chip is connected with a data interface of an external operation display terminal, and the TTL end is connected with a UART1 interface of the ARM processor chip; the Codec chip IIS bus interface is connected with an ARM processor chip IIS interface, a LINE2L pin is connected with an external operation display terminal audio output interface, a LEFT _ LOP pin is connected with an MIC _ IN pin of an ACC interface of a digital channel machine, an HPR pin is connected with an external operation display terminal audio input interface, and a LINE2R pin is connected with an EXT _ AFOUT pin of the ACC interface of the digital channel machine; an ADC1 pin of the ARM processor chip is connected with an RSSI pin of an ACC interface of the digital channel machine, and a UART2 interface is connected with a UART interface of the ACC interface of the digital channel machine.
The utility model relates to a principle: the power supply unit performs EMI electromagnetic filtering on external power supply through a power supply filter and then transmits the external power supply to the bridge rectifier; the bridge rectifier rectifies the power supply and transmits the rectified power to the power module; the power supply module converts the power supply into DC13.8V power to the digital channel machine and the main control unit.
The main control unit converts DC13.8V power supply into DC 5V through the switch power supply chip and then supplies power to the main control unit through the output end, converts DC 5V power supply into DC 3.3V power through the first LDO power supply chip and then supplies power to the main control unit, and converts DC 5V power supply into DC 1.8V power through the second LDO power supply chip and then supplies power to the main control unit; the Ethernet data transmission is isolated and protected and signal enhancement is carried out through a network transformer, and Ethernet data physical layer protocol conversion is carried out through an Ethernet PHY chip, so that the Ethernet data communication between an external dispatching switchboard and an ARM processor chip is realized; serial port conversion between the RS-422 level and the TTL level is carried out through the RS-422 interface chip, and data communication between the ARM processor chip and an external monitoring and controlling machine is achieved; serial port conversion between the RS-485 level and the TTL level is carried out through the RS-485 interface chip, and data communication between the ARM processor chip and an external operation display terminal is achieved; the analog audio signal output by the external operation display terminal is transmitted to a digital channel machine pin MIC _ IN or converted into a digital audio signal through a Codec chip, and then transmitted to an ARM processor chip through an IIS bus, the analog audio signal output by a digital channel machine pin EXT _ AFOUT is transmitted to an audio input interface of the external operation display terminal or converted into a digital audio signal, and then transmitted to the ARM processor chip through the IIS bus, and the digital audio signal transmitted by the ARM processor chip IIS bus interface is converted into an analog audio signal and then transmitted to the digital channel machine MIC _ IN or the audio input interface of the external operation display terminal; the ARM processor chip collects RSSI level of the digital channel machine through ADC1 pins to judge the received signal strength of the digital channel machine, and performs data communication with the digital channel machine through a UART2 interface and performs control management on the digital channel machine.
When the utility model transmits dispatching commands, dispatching command data transmitted from an external dispatching and monitoring machine is transmitted to a digital channel machine through an ARM processor chip of a main control unit for digital modulation and then wireless transmission is carried out; the received scheduling command data is transmitted to an ARM processor chip after being digitally demodulated through a digital channel machine, and then transmitted to a monitoring and dispatching machine through the ARM processor chip; and realizing the transmission function of the train dispatching command.
When dispatching and communicating with a station, the dispatching switchboard transmits the acquired digital audio signals to the ARM processor chip of the main control unit through an Ethernet circuit and then transmits the digital audio signals to the Codec chip, and the Codec chip converts the digital audio signals into analog audio signals and transmits the analog audio signals to an external operation display terminal for playing; the external operation display terminal transmits the acquired analog audio signals to a Codec chip of the main control unit, converts the analog audio signals into digital audio signals through the Codec chip, transmits the digital audio signals to an ARM processor chip, and transmits the digital audio signals to the dispatching switchboard through the ARM processor chip for playing; and the train dispatching voice communication function with the station is realized.
When a communication between a station and a locomotive is carried out, an external operation display terminal transmits a collected analog audio signal to a Codec chip of a main control unit, and the analog audio signal is transmitted to a digital channel machine through the Codec chip to be digitally modulated and then is wirelessly transmitted; carrying out digital demodulation on the received audio signal through a digital channel machine, transmitting the audio signal to a Codec chip, and transmitting the audio signal to an operation display terminal through the Codec chip for playing; the train dispatching voice communication function between the station and the locomotive is realized.
When dispatching and communicating with a locomotive, the dispatching switchboard transmits the acquired digital audio signals to the ARM processor chip of the main control unit through an Ethernet line and then transmits the digital audio signals to the Codec chip, and the Codec chip converts the digital audio signals into analog audio signals and transmits the analog audio signals to the digital channel machine for digital modulation and then wireless transmission; the received audio signal is transmitted to a Codec chip after being subjected to digital demodulation through a digital channel machine, an analog audio signal is converted into a digital audio signal through the Codec chip and then transmitted to an ARM processor chip, and the digital audio signal is transmitted to a dispatching switchboard through the ARM processor chip for playing; and the train dispatching voice communication function with the locomotive is realized.
The technical effects of the utility model are that: the train dispatching system meets the requirement of a 400MHz digital system wireless train dispatching communication function of station equipment in a railway digital wireless train dispatching system, realizes the functions of dispatching command transmission, dispatching and station communication, station and locomotive communication and dispatching and locomotive communication, and plays an important role in guaranteeing railway traffic safety and improving operation efficiency and economic benefit.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic block diagram of the power supply unit of FIG. 1;
fig. 3 is a schematic block diagram of the main control unit in fig. 1.
Detailed Description
For a more clear understanding of the present invention, reference is now made to the following detailed description taken in conjunction with the accompanying drawings and examples:
as shown in fig. 1, 2 and 3, a railway digital train dispatching station radio includes a power supply unit, a main control unit and a TK-868GD type digital channel machine; wherein the power supply unit comprises a FLAC12D-3WE type power supply filter, a KBJ608 type bridge stack and a PH150A280-15 type power supply module; the main control unit comprises an LM22670 type switching power supply chip, an SPX1117-3.3 type first LDO power supply chip, an LP5907MFX-1.8 type second LDO power supply chip, an MAX490E type RS-422 interface chip, an SN65HVD75 type RS-485 interface chip, a TLV320AIC3106C type Codec chip, an LPC4337 type ARM processor chip, a DP83848I type Ethernet PHY chip and an HX1188NL type network transformer.
The input end of a power filter of the power supply unit is connected with an external AC 220V power supply, the output end of the power filter is connected with the input end of the bridge rectifier, the input end of the power supply module is connected with the output end of the bridge rectifier, and the output end of the power supply module is connected with a power supply interface of the digital channel machine and the main control unit; EMI electromagnetic filtering is carried out on external power supply through a power supply filter and then the external power supply is transmitted to a bridge stack; the bridge rectifier rectifies the power supply and transmits the rectified power to the power module; the power supply module converts the power supply into DC13.8V power to the digital channel machine and the main control unit.
The input end of the main control unit switching power supply chip is connected with DC13.8V power supply input, and the output end of the main control unit switching power supply chip is connected with a main control unit DC 5V power supply interface; the input end of the first LDO power supply chip is connected with a DC 5V power supply, and the output end of the first LDO power supply chip is connected with a DC 3.3V power supply interface of the main control unit; the input end of the second LDO power supply chip is connected with a DC 5V power supply interface, and the output end of the second LDO power supply chip is connected with a main control unit DC 1.8V power supply interface; DC13.8V supplies power and converts the power into DC 5V through the switching power supply chip and then supplies power to the main control unit through the output, converts DC 5V power supply into DC 3.3V through LDO power supply chip 1 and then supplies power to the main control unit through the output, converts DC 5V power supply into DC 1.8V through LDO power supply chip 2 and then supplies power to the main control unit through the output.
The network end of the network transformer is connected with an external dispatching switchboard, and the chip end is connected with an Ethernet PHY chip PDM interface; the Ethernet PHY chip MAC interface is connected with an ARM processor chip ENET interface; the Ethernet data transmission is isolated and protected and signal enhancement is carried out through the network transformer, and the Ethernet data physical layer protocol conversion is carried out through the Ethernet PHY chip, so that the Ethernet data communication between the external dispatching switchboard and the ARM processor chip is realized.
The 422 end of the RS-422 interface chip is connected with an external monitoring extension, and the TTL end is connected with an UART3 interface of the ARM processor chip; and serial port conversion between the RS-422 level and the TTL level is carried out through the RS-422 interface chip, so that data communication between the ARM processor chip and an external monitoring and controlling machine is realized.
The 485 end of the RS-485 interface chip is connected with a data interface of an external operation display terminal, and the TTL end is connected with a UART1 interface of the ARM processor chip; and serial port conversion between the RS-485 level and the TTL level is carried out through the RS-485 interface chip, so that data communication between the ARM processor chip and an external operation display terminal is realized.
The IIS bus interface of the Codec chip is connected with the ARM processor chip, a LINE2L pin is connected with an audio output interface of an external operation display terminal, an LEFT _ LOP pin is connected with an MIC _ IN pin of an ACC interface of a digital channel machine, an HPR pin is connected with an audio input interface of the external operation display terminal, and a LINE2R pin is connected with an EXT _ AFOUT pin of the ACC interface of the digital channel machine; the digital channel machine antenna interface is connected with an external locomotive antenna; the analog audio signal output by the external operation display terminal is transmitted to a digital channel machine pin MIC _ IN through a Codec chip or is converted into a digital audio signal and then is transmitted to an ARM processor chip through an IIS bus, the analog audio signal output by a digital channel machine pin EXT _ AFOUT is transmitted to an audio input interface of the external operation display terminal or is converted into a digital audio signal and then is transmitted to the ARM processor chip through the IIS bus, and the digital audio signal transmitted by the IIS bus interface of the ARM processor chip is converted into an analog audio signal and then is transmitted to the digital channel machine MIC _ IN or the audio input interface of the external operation display terminal.
An ADC1 pin of the ARM processor chip is connected with an RSSI pin of an ACC interface of the digital channel machine, a UART2 interface is connected with a UART interface of the ACC interface of the digital channel machine, the ARM processor chip collects RSSI level of the digital channel machine through an ADC1 pin and judges the strength of a received signal of the digital channel machine, and the ARM processor chip performs data communication with the digital channel machine through a UART2 interface and performs control management on the digital channel machine.
When the dispatching command is transmitted, dispatching command data transmitted from an external dispatching and monitoring machine is transmitted to a digital channel machine through an ARM processor chip of a main control unit for digital modulation and then wireless transmission; the received scheduling command data is transmitted to an ARM processor chip after being digitally demodulated through a digital channel machine, and then transmitted to a monitoring and dispatching machine through the ARM processor chip; and realizing the transmission function of the train dispatching command.
When dispatching and communicating with a station, the dispatching switchboard transmits the acquired digital audio signals to the ARM processor chip of the main control unit through an Ethernet circuit and then transmits the digital audio signals to the Codec chip, and the Codec chip converts the digital audio signals into analog audio signals and transmits the analog audio signals to an external operation display terminal for playing; the external operation display terminal transmits the acquired analog audio signals to a Codec chip of the main control unit, converts the analog audio signals into digital audio signals through the Codec chip, transmits the digital audio signals to an ARM processor chip, and transmits the digital audio signals to the dispatching switchboard through the ARM processor chip for playing; and the train dispatching voice communication function with the station is realized.
When a communication between a station and a locomotive is carried out, an external operation display terminal transmits a collected analog audio signal to a Codec chip of a main control unit, and the analog audio signal is transmitted to a digital channel machine through the Codec chip to be digitally modulated and then is wirelessly transmitted; carrying out digital demodulation on the received audio signal through a digital channel machine, transmitting the audio signal to a Codec chip, and transmitting the audio signal to an operation display terminal through the Codec chip for playing; the train dispatching voice communication function between the station and the locomotive is realized.
Claims (1)
1. The utility model provides a railway digit train dispatching station radio station which characterized in that: the system comprises a power supply unit, a main control unit and a TK-868GD type digital channel machine; the input end of the power supply unit is connected with an external AC 220V power supply interface, and the output end of the power supply unit is connected with the main control unit and the digital channel machine power supply interface; the main control unit is connected with an ACC interface of the digital channel machine, an external operation display terminal, a monitoring extension machine and a dispatching switchboard in a bidirectional mode, and an antenna interface of the digital channel machine is connected with an external locomotive antenna;
the power supply unit comprises a FLAC12D-3WE type power supply filter, a KBJ608 type bridge stack and a PH150A280-15 type power supply module; the input end of the power supply filter is connected with an external AC 220V power supply, the output end of the power supply filter is connected with the input end of the bridge rectifier, the input end of the power supply module is connected with the output end of the bridge rectifier, and the output end of the power supply module is connected with a power supply interface of the digital channel machine and the main control unit;
the main control unit comprises an LM22670 type switching power supply chip, an SPX1117-3.3 type first LDO power supply chip, an LP5907MFX-1.8 type second LDO power supply chip, an MAX490E type RS-422 interface chip, an SN65HVD75 type RS-485 interface chip, a TLV320AIC3106C type Codec chip, an LPC4337 type ARM processor chip, a DP83848I type Ethernet PHY chip and an HX1188NL type network transformer; the input end of the switching power supply chip is connected with the power supply input end of DC13.8V, and the output end of the switching power supply chip is connected with the DC 5V power supply interface of the main control unit; the input end of the first LDO power supply chip is connected with a DC 5V power supply interface, and the output end of the first LDO power supply chip is connected with a main control unit DC 3.3V power supply interface; the input end of the second LDO power supply chip is connected with a DC 5V power supply interface, and the output end of the second LDO power supply chip is connected with a main control unit DC 1.8V power supply interface; the network end of the network transformer is connected with an external dispatching switchboard, and the chip end is connected with an Ethernet PHY chip PDM interface; the Ethernet PHY chip MAC interface is connected with an ARM processor chip ENET interface; the 422 end of the RS-422 interface chip is connected with an external monitoring extension, and the TTL end is connected with an UART3 interface of the ARM processor chip; the 485 end of the RS-485 interface chip is connected with a data interface of an external operation display terminal, and the TTL end is connected with a UART1 interface of the ARM processor chip; the Codec chip IIS bus interface is connected with an ARM processor chip IIS interface, a LINE2L pin is connected with an external operation display terminal audio output interface, a LEFT _ LOP pin is connected with an MIC _ IN pin of an ACC interface of a digital channel machine, an HPR pin is connected with an external operation display terminal audio input interface, and a LINE2R pin is connected with an EXT _ AFOUT pin of the ACC interface of the digital channel machine; an ADC1 pin of the ARM processor chip is connected with an RSSI pin of an ACC interface of the digital channel machine, and a UART2 interface is connected with a UART interface of the ACC interface of the digital channel machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020723778.6U CN212289874U (en) | 2020-05-06 | 2020-05-06 | Railway digital train dispatching station radio station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020723778.6U CN212289874U (en) | 2020-05-06 | 2020-05-06 | Railway digital train dispatching station radio station |
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| CN212289874U true CN212289874U (en) | 2021-01-05 |
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| CN202020723778.6U Expired - Fee Related CN212289874U (en) | 2020-05-06 | 2020-05-06 | Railway digital train dispatching station radio station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111422225A (en) * | 2020-05-06 | 2020-07-17 | 天津七一二通信广播股份有限公司 | Digital train shunting station radio station and implementation method thereof |
-
2020
- 2020-05-06 CN CN202020723778.6U patent/CN212289874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111422225A (en) * | 2020-05-06 | 2020-07-17 | 天津七一二通信广播股份有限公司 | Digital train shunting station radio station and implementation method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210708 Address after: 300140 No. 185, new great road, Tianjin, Hebei District Patentee after: TIANJIN 712 MOBILE COMMUNICATIONS Co.,Ltd. Address before: 300462 Tianjin Binhai New Area Economic and Technological Development Zone West District North Street 141 Patentee before: TIANJIN 712 COMMUNICATION & BROADCASTING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210105 |