CN211791504U - 400MHz digital train dispatching locomotive radio station - Google Patents
400MHz digital train dispatching locomotive radio station Download PDFInfo
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- CN211791504U CN211791504U CN202020533896.0U CN202020533896U CN211791504U CN 211791504 U CN211791504 U CN 211791504U CN 202020533896 U CN202020533896 U CN 202020533896U CN 211791504 U CN211791504 U CN 211791504U
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Abstract
The utility model discloses a 400MHz digit train dispatching locomotive radio station, this radio station include power filter, bridge rectifier, power module, digital channel machine and the master 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; 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 the external locomotive integrated wireless communication equipment. 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 locomotive radio station, in particular to possess 400MHz digital standard railway wireless row of transferring communication function's 400MHz digital row of transferring locomotive radio station.
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 application requirements of railway wireless train dispatching communication technology and train communication equipment, and according to the relevant policies and spirits of the country, 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, the 450MHz analog system wireless communication is upgraded to 400MHz digital system wireless communication, and a longer process period of coexistence of 450MHz analog and 400MHz digital systems exists in the equipment updating process, so that the locomotive equipment in the wireless train dispatching system is required to be added with the 400MHz digital system wireless train dispatching communication function.
SUMMERY OF THE UTILITY MODEL
In view of the problem that prior art exists, in order to satisfy the transition period that railway wireless train dispatching system equipment is upgraded to digital standard by analog standard, locomotive equipment among the wireless train dispatching system need increase the wireless demand of arranging dispatching communication function of 400MHz digital standard, the utility model provides a 400MHz digital train dispatching locomotive radio station.
The utility model adopts the technical proposal that: a400 MHz digital train dispatching locomotive radio station which characterized in that: the system comprises a power filter with a model number of FLAC12D-3WE, a bridge rectifier with a model number of KBJ608, a power module with a model number of UMRQ100E5P1301, a digital channel machine with a model number of TK-868GD and a main control unit; the input end of the power supply filter is connected with an external locomotive DC72V or DC 110V 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 digital channel machine and the main control unit; the main control unit is connected with an ACC interface of the digital channel machine and the external locomotive integrated wireless communication equipment in a bidirectional mode, and the digital channel machine antenna interface is connected with an external locomotive antenna.
The main control unit of the utility model comprises a switch power supply chip with the model of LM22670, an LDO power supply chip with the model of SPX1117-3.3, an RS-422 interface chip with the model of MAX490E, a Codec chip with the model of TLV320AIC3106C and an ARM processor chip with the model of LPC 4337; the input end of the switching power supply chip is connected with a DC 13.8V power supply input, and the output end of the switching 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 power supply, and the output end of the LDO power supply chip provides DC 3.3V power supply for other devices of the main control unit; the 422 end of the RS-422 interface chip is connected with a data interface of the external locomotive integrated wireless communication equipment, and the TTL end is connected with a UART1 interface of the ARM processor chip; a LINE2L pin of the Codec chip is connected with an audio output interface of the external locomotive integrated wireless communication equipment, a LEFT _ LOP pin is connected with an MIC _ IN pin of an ACC interface of the digital channel machine, an HPR pin is connected with an audio input interface of the external locomotive integrated wireless communication equipment, and a LINE2R pin is connected with an EXT _ AFOUT pin of the ACC interface of the digital channel machine; an IIC bus interface of the ARM processor chip is connected with the Codec chip, an ADC1 pin 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 main control unit converts DC 13.8V power supply into DC 5V power supply through the switching power supply chip and then supplies power to other devices through the output end, and converts DC 5V power supply into DC 3.3V power supply through the LDO power supply chip and then supplies power to other devices through the output end; serial port conversion between the RS-422 level of the data interface of the external locomotive integrated wireless communication equipment and the TTL level of the UART1 interface of the ARM processor chip is carried out through the RS-422 interface chip, so that data communication between the ARM processor chip and the external locomotive integrated wireless communication equipment is realized; the audio signal output by the external locomotive integrated wireless communication equipment is processed through a Codec chip and then transmitted to an audio input pin MIC _ IN of a digital channel machine, and the audio signal output by an audio output pin EXT _ AFOUT of the digital channel machine is processed and then transmitted to an audio input interface of the external locomotive integrated wireless communication equipment; the ARM processor chip controls and manages the Codec chip through the IIC bus, acquires the RSSI level of the digital channel machine through an ADC1 pin 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 controls and manages the digital channel machine.
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; the power supply module converts the power supply of the DC72V or DC 110V locomotive into DC 13.8V and then supplies power to the digital channel machine and the main control unit; the external locomotive integrated wireless communication equipment transmits data to be transmitted to an ARM processor chip through a main control unit RS-422 interface chip, transmits the data to be transmitted to a digital channel machine through the ARM processor chip, transmits a voice signal to be transmitted to the digital channel machine through a main control unit Codec chip, controls the digital channel machine through the ARM processor chip to digitally modulate the data to be transmitted and the voice signal to be transmitted and then wirelessly transmits the data and the voice signal to be transmitted, and thus the railway wireless train dispatching communication data and the voice are transmitted; the received wireless signal is digitally demodulated through a digital channel machine, then the received data is transmitted to an ARM processor chip, then the data is transmitted to the external locomotive integrated wireless communication equipment through an RS-422 interface chip, and the received voice signal is transmitted to the external locomotive integrated wireless communication equipment through a Codec chip, so that the railway wireless train tone communication data and voice are received.
The technical effects of the utility model are that: the train dispatching system realizes the 400MHz digital system wireless train dispatching communication function of the locomotive equipment in the wireless train dispatching system, meets the function requirement of the transition period equipment for upgrading the analog system of the railway wireless train dispatching system equipment into the digital system, and has important effects on guaranteeing the railway traffic 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 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 and 2, a 400MHz digital train dispatching locomotive radio station includes a power filter model FLAC12D-3WE, a bridge rectifier model KBJ608, a power module model UMRQ100E5P1301, a digital channel machine model TK-868GD, and a main control unit; the main 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 RS-422 interface chip with the model of MAX490E, a Codec chip with the model of TLV320AIC3106C and an ARM processor chip with the model of LPC 4337.
The input end of the power supply filter is connected with an external locomotive DC72V or DC 110V 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 digital channel machine and the main control unit; EMI electromagnetic filtering is carried out on power supply of an external locomotive through a power supply filter, reverse connection protection is carried out on the power supply of the locomotive through a bridge rectifier and then the power supply is transmitted to a power supply module, and after the power supply module converts DC72V or DC 110V locomotive power supply into DC 13.8V, the power supply module supplies power to a digital channel machine and a main control unit.
The input end of the main control unit switching power supply chip is connected with a DC 13.8V power supply input, the output end of the main control unit switching power supply chip is connected with a DC 5V power supply interface of other devices of the main control unit, and the DC 13.8V power supply is converted into DC 5V power supply through the switching power supply chip and then is supplied to 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 main 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 422 end of the RS-422 interface chip is connected with a data interface of the external locomotive integrated wireless communication equipment, and the TTL end is connected with a UART1 interface of the ARM processor chip; the serial port conversion between the RS-422 level of the data interface of the external locomotive integrated wireless communication equipment and the TTL level of the UART1 interface of the ARM processor chip is carried out through the RS-422 interface chip, and the ARM processor chip carries out data communication with the external locomotive integrated wireless communication equipment through the RS-422 interface chip.
A LINE2L pin of the Codec chip is connected with an audio output interface of the external locomotive integrated wireless communication equipment, a LEFT _ LOP pin is connected with an MIC _ IN pin of an ACC interface of the digital channel machine, an HPR pin is connected with an audio input interface of the external locomotive integrated wireless communication equipment, and a LINE2R pin is connected with an EXT _ AFOUT pin of the ACC interface of the digital channel machine; the audio signal output by the external locomotive integrated wireless communication equipment is processed by the Codec chip and then transmitted to the audio input pin MIC _ IN of the digital channel machine, and the audio signal output by the audio output pin EXT _ AFOUT of the digital channel machine is processed and then transmitted to the audio input interface of the external locomotive integrated wireless communication equipment.
An IIC bus interface of the ARM processor chip is connected with a Codec chip, an ADC1 pin 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, and an antenna interface of the digital channel machine is connected with an external locomotive antenna; the ARM processor chip controls and manages the Codec chip through the IIC bus, judges the strength of the received signal of the digital channel machine by collecting the RSSI received signal level of the digital channel machine, performs data communication with the digital channel machine through the UART2 interface and controls and manages the digital channel machine, and performs wireless receiving and sending of wireless train tone communication data and voice through the digital channel machine.
The external locomotive integrated wireless communication equipment transmits data to be transmitted to an ARM processor chip through a main control unit RS-422 interface chip, transmits the data to be transmitted to a digital channel machine through the ARM processor chip, transmits a voice signal to be transmitted to the digital channel machine through a main control unit Codec chip, controls the digital channel machine through the ARM processor chip to digitally modulate the data to be transmitted and the voice signal to be transmitted and then wirelessly transmits the data and the voice signal to be transmitted, and thus the railway wireless train dispatching communication data and the voice are transmitted; the received wireless signal is digitally demodulated through a digital channel machine, then the received data is transmitted to an ARM processor chip, then the data is transmitted to external locomotive integrated wireless communication equipment through an RS-422 interface chip, and the received voice signal is transmitted to the external locomotive integrated wireless communication equipment through a Codec chip, so that the railway wireless train tone communication data and voice are received; the 400MHz digital railway wireless train dispatching communication function is realized.
Claims (2)
1. A400 MHz digital train dispatching locomotive radio station which characterized in that: the system comprises a power filter with a model number of FLAC12D-3WE, a bridge rectifier with a model number of KBJ608, a power module with a model number of UMRQ100E5P1301, a digital channel machine with a model number of TK-868GD and a main control unit; the input end of the power supply filter is connected with an external locomotive DC72V or DC 110V 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 digital channel machine and the main control unit; the main control unit is connected with an ACC interface of the digital channel machine and the external locomotive integrated wireless communication equipment in a bidirectional mode, and the digital channel machine antenna interface is connected with an external locomotive antenna.
2. The 400MHz digital train locomotive radio of claim 1, wherein: the main 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 RS-422 interface chip with the model of MAX490E, a Codec chip with the model of TLV320AIC3106C and an ARM processor chip with the model of LPC 4337; the input end of the switching power supply chip is connected with a DC 13.8V power supply input, and the output end of the switching 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 power supply, and the output end of the LDO power supply chip provides DC 3.3V power supply for other devices of the main control unit; the 422 end of the RS-422 interface chip is connected with a data interface of the external locomotive integrated wireless communication equipment, and the TTL end is connected with a UART1 interface of the ARM processor chip; a LINE2L pin of the Codec chip is connected with an audio output interface of the external locomotive integrated wireless communication equipment, a LEFT _ LOP pin is connected with an MIC _ IN pin of an ACC interface of the digital channel machine, an HPR pin is connected with an audio input interface of the external locomotive integrated wireless communication equipment, and a LINE2R pin is connected with an EXT _ AFOUT pin of the ACC interface of the digital channel machine; an IIC bus interface of the ARM processor chip is connected with the Codec chip, an ADC1 pin 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 |
|---|---|---|---|
| CN202020533896.0U CN211791504U (en) | 2020-04-13 | 2020-04-13 | 400MHz digital train dispatching locomotive radio station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020533896.0U CN211791504U (en) | 2020-04-13 | 2020-04-13 | 400MHz digital train dispatching locomotive radio station |
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| CN211791504U true CN211791504U (en) | 2020-10-27 |
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| CN202020533896.0U Active CN211791504U (en) | 2020-04-13 | 2020-04-13 | 400MHz digital train dispatching locomotive radio station |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210702 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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| CP03 | Change of name, title or address | ||
| 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 |