CN210518316U - Train tail locomotive radio station supporting digital-analog switching - Google Patents
Train tail locomotive radio station supporting digital-analog switching Download PDFInfo
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- CN210518316U CN210518316U CN201921822575.6U CN201921822575U CN210518316U CN 210518316 U CN210518316 U CN 210518316U CN 201921822575 U CN201921822575 U CN 201921822575U CN 210518316 U CN210518316 U CN 210518316U
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Abstract
The utility model discloses a support digital analog switching's train tail locomotive radio station, this radio station includes power filter, bridge rectifier, power module, channel machine and the control unit. The reverse connection protection and the voltage conversion are carried out on the power supply of the locomotive through the power filter, the bridge rectifier and the power module; receiving and sending the train tail communication wireless data in 450MHz analog mode and 400MHz digital mode through a channel machine; and the control unit is used for controlling and managing the channel machine and carrying out data communication with an external train dispatching locomotive radio station. The utility model discloses a train tail radio communication of two kinds of modes of train tail locomotive radio station compatibility 450MHz simulation and 400MHz digit.
Description
Technical Field
The utility model relates to a locomotive radio station, in particular to support 450MHz simulation and two kinds of mode railway of 400MHz and be listed as tail radio communication's the train tail locomotive radio station that supports digital analog to switch.
Background
The railway train tail safety protection system mainly comprises a train tail locomotive radio station and a train tail host, is mature in railways in China for many years, and plays an important role in guaranteeing driving safety. At present, 450MHz frequency band analog mode is generally adopted for truck train tail information wireless transmission. According to the relevant policies and spirits of the country, since 1 month and 1 day of 2011, the country stops the model approval of the analog interphone equipment in the 150MHz400MHz frequency band, comprehensively popularizes the digital interphone, and requires users such as railways and the like to transfer the original 450MHz frequency band service to public interphone frequency points or other interphone frequency points which accord with the planning. The railway freight train tail safety protection system is also upgraded from a 450MHz analog system to a 400MHz digital system, a longer process period of coexistence of the 450MHz analog system and the 400MHz digital system exists in an equipment updating process, a train tail locomotive radio station and a train tail host of the two systems cannot communicate, equipment of the same system is required to be paired for use, great difficulty is brought to use and management of the train tail equipment, and railway transportation efficiency is affected.
SUMMERY OF THE UTILITY MODEL
In view of the problem that prior art exists, in order to solve the problem that the two kinds of standard equipment of transition period that the goods were listed as tail safety protection equipment and upgraded to digital standard by analog standard can not communicate, make and be listed as two kinds of communication modes of tail locomotive radio station compatible support 450MHz simulation and 400MHz digit, the utility model provides a support digital analog switching's a row tail locomotive radio station.
The utility model adopts the technical proposal that: a train tail locomotive radio station supporting digital-to-analog switching is characterized in that: the power supply module comprises a power supply filter with a model of FLAC12D-3WE, a bridge rectifier with a model of KBJ608, a power supply module with a model of VI-241-12, a channel machine with a model of XIR M6660 UHF and a control unit; the input end of the power supply filter is connected with an external locomotive DC110V for 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 channel machine and the control unit; the control unit is bidirectionally connected with a control interface of a 400MHz digital channel machine and an external train dispatching locomotive radio station, and an antenna interface of the channel machine is connected with an external locomotive antenna.
The control unit comprises a switching power supply chip with the model of LM22670, an LDO power supply chip with the model of SPX1117-3.3, an ARM processor chip with the model of LPC4337, a memory chip with the model of MX66L51235F, a clock chip with the model of DS3231SN and an RS422 interface chip with the model of MAX 490E; the input end of the switch power supply chip is connected with DC13.8V power supply input, and the output end of the switch power supply chip provides DC 5V power supply for other devices of the main control unit; the input end of the LDO power supply chip is connected with DC 5V for power supply, and the output end of the LDO power supply chip provides DC 3.3V for other devices of the main control unit for power supply; the memory chip is connected with an SPI _ FLASH bus interface of the ARM processor chip; the clock chip is connected with an IIC bus interface of the ARM processor chip; the RS422 interface chip 422 end is connected with an external train dispatching locomotive radio station data interface, and the TTL end is connected with an ARM processor chip UART1 interface; and an ARM processor chip SSI bus interface is connected with an OB interface of the channel machine.
The utility model relates to a principle: the control unit converts DC13.8V power supply into DC 5V through the switching power supply chip and supplies power to other devices through the output end, and converts DC 5V power supply into DC 3.3V power through the LDO power supply chip and supplies power to other devices through the output end; recording and storing the working state of the equipment and the train tail communication data through a storage chip; providing a clock for the equipment through a clock chip; serial port conversion between the RS422 level of the data interface of the external train dispatching locomotive radio station and the TTL level of the UART1 interface of the ARM processor chip is carried out through the RS422 interface chip, so that data communication between the ARM processor chip and the external train dispatching locomotive radio station is realized; the ARM processor chip carries out data communication with an OB interface of the channel machine through an SSI bus interface to transmit a train tail data instruction, and controls and manages the channel machine to switch between a 450MHz analog mode and a 400MHz digital mode.
EMI electromagnetic filtering is carried out on power supplied to an external locomotive through a power supply filter; the power supply of the locomotive is reversely connected and protected through the bridge rectifier and then transmitted to the power supply module; converting the DC110V locomotive power supply to DC13.8V back channel machine and control unit power supply through power module; the control unit ARM processor chip carries out data communication with an external train dispatching locomotive radio station through an RS422 interface chip to transmit a train tail communication instruction; when the equipment works in a 450MHz analog mode, the ARM processor chip controls the channel machine to be switched into a 450MHz analog mode, a train tail instruction received from an external train dispatching locomotive radio station is wirelessly sent through the channel machine in an FFSK modulation mode, and the train tail instruction received by the channel machine is transmitted to the train dispatching locomotive radio station after being demodulated in the FFSK modulation mode; when the train dispatching machine works in a 400MHz digital mode, the channel machine is controlled to be switched to a 400MHz digital system through an ARM processor chip, a train tail instruction received from an external train dispatching locomotive radio station is wirelessly sent through the channel machine in a CSBK modulation mode, and the train tail instruction received by the channel machine is transmitted to the train dispatching locomotive radio station after being demodulated in the CSBK modulation mode.
The technical effects of the utility model are that: the railway train tail wireless communication of the train tail locomotive radio station compatible with two modes of 450MHz analog and 400MHz digital is realized, the problem that the two modes of equipment in a transition period of upgrading the train tail safety protection equipment from an analog mode to a digital mode cannot communicate is solved, and the railway train tail wireless communication system plays an important role in guaranteeing the railway driving safety and improving the 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 control unit of 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 and 2, a digital-analog compatible train tail locomotive radio station comprises a power filter model of FLAC12D-3WE, a bridge rectifier model KBJ608, a power module model VI-241-12, a channel machine model XIR M6660 UHF and a control unit; the control unit comprises a switching power supply chip with the model of LM22670, an LDO power supply chip with the model of SPX1117-3.3, an ARM processor chip with the model of LPC4337, a storage chip with the model of MX66L51235F, a clock chip with the model of DS3231SN and an RS422 interface chip with the model of MAX 490E.
The input end of the power supply filter is connected with an external locomotive DC110V 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 channel machine and the control unit; EMI electromagnetic filtering is carried out on power supplied by an external locomotive through a power supply filter, reverse connection protection is carried out on the power supplied by the locomotive through a bridge rectifier and then the power is transmitted to a power supply module, and DC110V locomotive power supply is converted into DC13.8V backward channel machine and control unit power supply through the power supply module.
The input end of the control unit switch power supply chip is connected with DC13.8V power supply input, the output end of the control unit switch power supply chip is connected with other devices of the control unit DC 5V power supply interface, DC13.8V power supply is converted into DC 5V power supply through the switch power supply chip, and then the power supply is carried out on other devices; the input end of the LDO power supply chip is connected with the DC 5V power supply, the output end of the LDO power supply chip is connected with the DC 3.3V power supply interface of other devices of the control unit, and the DC 5V power supply is converted into DC 3.3V power supply through the LDO power supply chip to supply power to other devices.
The storage chip is connected with an SPI _ FLASH bus interface of the ARM processor chip, and records and stores the working state of the equipment and the communication data of the train tail through the storage chip.
The clock chip is connected with the IIC bus interface of the ARM processor chip and provides a clock for the equipment through the clock chip.
The RS422 interface chip 422 end is connected with an external train dispatching locomotive radio station data interface, and the TTL end is connected with an ARM processor chip UART1 interface; serial port conversion between the data interface RS422 level of the external train dispatching locomotive radio station and the ARM processor chip UART1 interface TTL level is carried out through the RS422 interface chip, and the ARM processor chip carries out data communication with the external train dispatching locomotive radio station through the RS422 interface chip and transmits a train tail communication instruction.
An ARM processor chip SSI bus interface is connected with an OB interface of the channel machine; the channel machine antenna interface is connected with an external locomotive antenna; the ARM processor chip is in data communication with an OB interface of the channel machine through an SSI bus interface to transmit a train tail data instruction, and controls and manages the channel machine to switch between a 450MHz analog mode and a 400MHz digital mode; and receiving and transmitting the wireless data of the train tail communication through the channel machine.
When the equipment works in a 450MHz analog mode, the ARM processor chip controls the channel machine to be switched into a 450MHz analog mode, a train tail instruction received from an external train dispatching locomotive radio station is wirelessly sent through the channel machine in an FFSK modulation mode, and the train tail instruction received by the channel machine is transmitted to the train dispatching locomotive radio station after being demodulated in the FFSK modulation mode; when the train dispatching system works in a 400MHz digital mode, the ARM processor chip controls the channel machine to be switched to a 400MHz digital system, a train tail instruction received from an external train dispatching locomotive radio station is wirelessly sent through the channel machine in a CSBK modulation mode, and the train tail instruction received by the channel machine is transmitted to the train dispatching locomotive radio station after being demodulated in the CSBK modulation mode; railway train tail wireless communication compatible with two modes of 450MHz analog and 400MHz digital is realized.
Claims (2)
1. A train tail locomotive radio station supporting digital-to-analog switching is characterized in that: the power supply module comprises a power supply filter with a model of FLAC12D-3WE, a bridge rectifier with a model of KBJ608, a power supply module with a model of VI-241-12, a channel machine with a model of XIR M6660 UHF and a control unit; the input end of the power supply filter is connected with an external locomotive DC110V 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 channel machine and the control unit; the control unit is bidirectionally connected with a control interface of a 400MHz digital channel machine and an external train dispatching locomotive radio station, and an antenna interface of the channel machine is connected with an external locomotive antenna.
2. The train tail locomotive radio station supporting digital-to-analog switching according to claim 1, wherein: the control unit comprises a switching power supply chip with the model of LM22670, an LDO power supply chip with the model of SPX1117-3.3, an ARM processor chip with the model of LPC4337, a memory chip with the model of MX66L51235F, a clock chip with the model of DS3231SN and an RS422 interface chip with the model of MAX 490E; the input end of the switch power supply chip is connected with DC13.8V power supply input, and the output end of the switch power supply chip provides DC 5V power supply for other devices of the main control unit; the input end of the LDO power supply chip is connected with DC 5V for power supply, and the output end of the LDO power supply chip provides DC 3.3V for other devices of the main control unit for power supply; the memory chip is connected with an SPI _ FLASH bus interface of the ARM processor chip; the clock chip is connected with an IIC bus interface of the ARM processor chip; the RS422 interface chip 422 end is connected with an external train dispatching locomotive radio station data interface, and the TTL end is connected with an ARM processor chip UART1 interface; and an ARM processor chip SSI bus interface is connected with an OB interface of the channel machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822575.6U CN210518316U (en) | 2019-10-28 | 2019-10-28 | Train tail locomotive radio station supporting digital-analog switching |
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| CN201921822575.6U CN210518316U (en) | 2019-10-28 | 2019-10-28 | Train tail locomotive radio station supporting digital-analog switching |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808755A (en) * | 2019-10-28 | 2020-02-18 | 天津七一二通信广播股份有限公司 | Digital-analog compatible train tail locomotive radio station and implementation method thereof |
| CN114598341A (en) * | 2022-03-18 | 2022-06-07 | 天津七一二移动通信有限公司 | Locomotive electrical station number die switching device and implementation method |
-
2019
- 2019-10-28 CN CN201921822575.6U patent/CN210518316U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808755A (en) * | 2019-10-28 | 2020-02-18 | 天津七一二通信广播股份有限公司 | Digital-analog compatible train tail locomotive radio station and implementation method thereof |
| CN114598341A (en) * | 2022-03-18 | 2022-06-07 | 天津七一二移动通信有限公司 | Locomotive electrical station number die switching device and implementation method |
| CN114598341B (en) * | 2022-03-18 | 2024-02-27 | 天津七一二移动通信有限公司 | Locomotive radio station digital-analog switching device and implementation method |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210709 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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| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 300140 No. 185, new great road, Tianjin, Hebei District Patentee after: Tianjin 712 Mobile Communication Co.,Ltd. Country or region after: China Address before: 300140 No. 185, new great road, Tianjin, Hebei District Patentee before: TIANJIN 712 MOBILE COMMUNICATIONS Co.,Ltd. Country or region before: China |
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