CN115379412B - Railway wireless train dispatching vehicle-mounted radio station maintenance terminal and wireless upgrading maintenance method - Google Patents
Railway wireless train dispatching vehicle-mounted radio station maintenance terminal and wireless upgrading maintenance method Download PDFInfo
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- CN115379412B CN115379412B CN202211300897.0A CN202211300897A CN115379412B CN 115379412 B CN115379412 B CN 115379412B CN 202211300897 A CN202211300897 A CN 202211300897A CN 115379412 B CN115379412 B CN 115379412B
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- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a railway wireless train dispatching vehicle-mounted radio station maintenance terminal and a wireless upgrading maintenance method, wherein the maintenance terminal comprises a wireless access unit consisting of a 4GLTE-R module, a WIFI module, an interface module and a switch; the control unit consists of a network interface module, a serial interface module, a USB interface module, a display screen module, a FLASH module and a control mainboard; a power supply unit composed of a charging circuit and a storage battery; the 4GLTE-R module and the WIFI module are respectively connected with a vehicle-mounted radio station 4GLTE-R network and a vehicle-mounted radio station WIFI network of an external locomotive radio station through a wireless network; the interface module is connected with an external personal computer through a network cable. The invention realizes the automatic acquisition and recording of the software and hardware information of the vehicle radio station, and ensures the stable and reliable upgrading and maintenance work; the maintenance work efficiency is improved, and the manual operation is saved; and the records are uniformly stored, so that the tracing and statistics are convenient.
Description
Technical Field
The invention relates to a railway wireless train dispatching vehicle-mounted radio station, in particular to a maintenance terminal and a wireless upgrading maintenance method of the railway wireless train dispatching vehicle-mounted radio station under a broadband mode. The method is used for normally carrying out detection, upgrading, downloading, uploading and other operations on the software version, the data version and the data information of the vehicle-mounted radio station when the locomotive is put in storage, upgraded and maintained, and storing records.
Background
At present, most railway locomotives in China are equipped with vehicle-mounted radio stations for second-generation railway wireless train dispatching, and at present, routine software data maintenance and downloading work of the vehicle-mounted radio stations is mainly completed by maintenance personnel on a train through a U disk or other maintenance clamps, and the work of software upgrading, recording, data downloading and the like is performed on the vehicle-mounted radio stations.
With the continuous upgrading and transformation of a railway network, at present, a plurality of railway sections are covered by a 4GLTE-R network and even a 5G network, wireless Wifi functions are added to part of vehicle-mounted radio stations, and large-scale data transmission can be realized through the high-speed networks.
Disclosure of Invention
In view of the state of the prior art, the maintenance terminal and the wireless upgrade maintenance method for the railway wireless train dispatching vehicle-mounted radio station are researched and developed under the background. At present, a railway wireless train dispatching vehicle-mounted radio station maintenance terminal is in a commissioning stage, with the intelligent railway strategy proposed by the state, the application of broadband network systems such as 4GLTE-R and 5G-R to a railway is a great trend, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal can gradually replace maintenance personnel in a traditional mode to perform manual maintenance operation one by one, compared with the traditional manual maintenance operation one by one, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal adopts an advanced network technology, can efficiently and quickly acquire software and configuration information of train vehicle-mounted radio stations, has the advantages of automatically acquiring train information, uniformly and synchronously upgrading multiple trains, uniformly downloading multiple data, automatically uploading recorded information, performing online query and the like, greatly improves the maintenance work efficiency of the railway wireless train dispatching vehicle-mounted radio stations, and promotes the development of railway wireless service.
The technical scheme adopted by the invention is as follows: a maintenance terminal for a railway wireless train dispatching vehicle-mounted radio station comprises a wireless access unit, a control unit and a power supply unit; the wireless access unit is connected with the control unit through a network cable, and the power supply unit is connected with the wireless access unit and the control unit through a power cable; the wireless access unit comprises a 4GLTE-R module, a WIFI module, an interface module and an exchanger, and the 4GLTE-R module, the WIFI module and the interface module are all connected with the exchanger through network cables; the 4GLTE-R module and the WIFI module are respectively connected with a vehicle-mounted radio station 4GLTE-R network and a vehicle-mounted radio station WIFI network of an external locomotive radio station through a wireless network; the interface module is connected with an external personal computer through a network cable.
The control unit comprises a network interface module, a serial interface module, a USB interface module, a display screen module, a FLASH module and a control main board; the network interface module, the serial interface module, the USB interface module, the display screen module and the FLASH module are all connected with the control mainboard; the serial port interface module is respectively connected with the 4GLTE-R module and the WIFI module of the wireless access unit; the USB interface module is connected with an external personal storage device.
The power supply unit comprises a charging circuit and a storage battery; the charging circuit is connected with a storage battery, and the storage battery is respectively connected with the switch of the wireless access unit and the control mainboard of the control unit.
The invention relates to a wireless maintenance upgrading method for a railway wireless train dispatching vehicle radio station maintenance terminal, which comprises the following steps:
a1, electrifying and initializing a maintenance terminal of a railway wireless train dispatching vehicle radio station.
Setting parameters of an A2, 4GLTE-R network and a Wifi network.
And A3, the maintenance terminal of the railway wireless train dispatching vehicle radio station selects a network mode to access, and an IP address is obtained.
And A4, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal receives the current vehicle-mounted radio station comprehensive state information periodically transmitted through A4 GLTE-R network or a Wifi network, and acquires locomotive information.
And A5, the maintenance terminal of the railway wireless train dispatching vehicle radio station automatically inquires the vehicle radio station software and data information.
And A6, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal respectively judges whether software data upgrading is needed or not, whether recording is needed or not and whether data uploading is needed or not according to the current vehicle-mounted radio station software data information which is automatically inquired.
And A7, if software data upgrading is needed, entering a sub-program for upgrading the software data of the vehicle radio station by wireless, otherwise, ending the program.
And A8, if recording and data uploading are needed, entering a subprogram for wirelessly uploading the recording and data of the vehicle radio station, otherwise, ending the subprogram.
Compared with the prior art, the invention has the following advantages:
(1) The wireless access unit with the brand-new design is equipped, the 4GLTE-R module and the WIFI module are contained in the wireless access unit, the terminal can be accessed and maintained through the Wifi wireless access, and the wireless access unit is wider in bandwidth, higher in transmission speed, smaller in time delay and higher in anti-interference performance.
(2) The wireless train dispatching vehicle-mounted radio station maintenance terminal greatly reduces the difficulty and working steps of manual operation, and the traditional vehicle-mounted radio station upgrading maintenance work needs maintenance personnel to carry out locomotive internal operation on a locomotive one by one, so that time and labor are wasted. The software and hardware information of the vehicle radio station can be automatically acquired and recorded, and the whole process of upgrading and maintaining work is more stable and reliable.
(3) The maintenance terminal of the wireless train dispatching vehicle-mounted radio station can be synchronously connected with a plurality of train vehicle-mounted radio stations in a 4GLTE-R network mode, can perform batch upgrading maintenance work, can automatically start upgrading maintenance work one by one after simple setting, and greatly saves manual operation.
In a word, when the current network and the vehicle radio station equipment are updated and iterated, the wireless updating and maintaining method can be used for performing wireless updating and maintaining on the vehicle radio station, greatly improving the maintenance working efficiency, saving the human resource investment, forming unified record storage and facilitating the tracing and statistics.
Drawings
FIG. 1 is a schematic block diagram of the railway radio train dispatching vehicle station maintenance terminal connection of the present invention;
FIG. 2 is a wireless upgrade maintenance work flow diagram of the present invention;
FIG. 3 is a flow chart of the automatic query vehicle radio software and data information of FIG. 2;
FIG. 4 is a flowchart of the radio upgrade vehicle station software data subroutine of FIG. 2;
fig. 5 is a flow diagram of the radio upload vehicle station log and data subroutine of fig. 2.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal comprises a wireless access unit, a control unit and a power supply unit; the wireless access unit is connected with the control unit through a network cable, and the power supply unit is connected with the wireless access unit and the control unit through a power cable; the wireless access unit comprises a 4GLTE-R module, a WIFI module, an interface module and a switch, and the 4GLTE-R module, the WIFI module and the interface module are all connected with the switch through network cables; the 4GLTE-R module and the WIFI module are respectively connected with a vehicle-mounted radio station 4GLTE-R network and a vehicle-mounted radio station WIFI network of an external locomotive radio station through a wireless network; the interface module is connected with an external personal computer through a network cable.
The control unit comprises a network interface module, a serial interface module, a USB interface module, a display screen module, a FLASH module and a control mainboard; the network interface module, the serial interface module, the USB interface module, the display screen module and the FLASH module are all connected with the control mainboard; the serial port interface module is respectively connected with the 4GLTE-R module and the WIFI module of the wireless access unit; the USB interface module is connected with an external personal storage device.
The power supply unit comprises a charging circuit and a storage battery; the charging circuit is connected with the storage battery, and the storage battery is respectively connected with the switch of the wireless access unit and the control mainboard of the control unit.
The maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station can be connected into a 4GLTE-R network through a wireless access unit, the maintenance terminal is in network communication connection with the wireless train dispatching vehicle-mounted radio station positioned at a locomotive head, the connection can transmit data wirelessly, or a wireless train dispatching vehicle-mounted radio station host with a Wifi function can be connected into the maintenance terminal through a built-in Wifi of the wireless access unit, the maintenance terminal can send an upgrade file and a management configuration file of the wireless train dispatching vehicle-mounted radio station, the locomotive radio station uploads files, data and the like, the wireless access exchange unit provides network access and external network equipment access, and the control unit completes interface operation, state display, data recording, inquiry, USB port leading-in and file leading-out.
The maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station has the function of automatically inquiring and recording the version data information of the vehicle-mounted radio station currently in the 4GLTE-R network or the same Wifi network.
The railway wireless train dispatching vehicle radio station maintenance terminal has the function of automatically upgrading the software data information of the vehicle radio station according to the configuration.
The railway wireless train dispatching vehicle-mounted radio station maintenance terminal has the function of automatically uploading records and data of the vehicle-mounted radio station according to the configuration.
As shown in fig. 2, the wireless maintenance upgrading method for the railway wireless train dispatching vehicle radio station maintenance terminal includes the following steps:
a1, electrifying and initializing a maintenance terminal of a railway wireless train dispatching vehicle radio station.
Setting parameters of an A2, 4GLTE-R network and a Wifi network.
A3, the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station selects a network mode to intervene, and an IP address is obtained.
And A4, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal receives the current vehicle-mounted radio station comprehensive state information periodically transmitted through an LTE-R network or a Wifi network, and acquires locomotive information.
And A5, automatically inquiring the data information of the vehicle radio station software by the railway wireless train dispatching vehicle radio station maintenance terminal.
And A6, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal respectively judges whether software data upgrading is needed or not, whether recording is needed or not and whether data uploading is needed or not according to the current vehicle-mounted radio station software data information which is automatically inquired.
And A7, if software data upgrading is needed, entering a sub-program for upgrading the software data of the vehicle radio station by wireless, otherwise, ending the program.
And A8, if recording and data uploading are needed, entering a subprogram for wirelessly uploading the recording and data of the vehicle radio station, otherwise, ending the subprogram.
As shown in fig. 3, in step A5, the program for automatically querying the car station software data information performs the following operations:
and B1, automatically sending a software and hardware information query command to the current vehicle-mounted radio station by the railway wireless train dispatching vehicle-mounted radio station maintenance terminal.
And B2, after receiving the software and hardware information query command, the current vehicle-mounted radio station returns software and hardware data version information to the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station.
And B3, the maintenance terminal of the railway wireless train dispatching vehicle radio station receives the version information of the software and hardware data returned by the current vehicle radio station.
And B4, displaying the software and hardware data version information returned by the current vehicle radio to an operation panel by the railway wireless train dispatching vehicle radio maintenance terminal.
And B5, recording software and hardware data version information returned by the current vehicle radio to a FLASH built in a FLASH module by the maintenance terminal of the railway wireless train dispatching vehicle radio.
As shown in fig. 4, in step A7, the radio upgrade car station software data subroutine performs the following operations:
and C1, injecting the latest software data into the railway radio train station maintenance terminal through a USB port or a personal computer.
And C2, a maintainer selects the vehicle radio station needing to be upgraded and maintained on an operation panel of the maintenance terminal of the railway wireless train dispatching vehicle radio station.
And C3, the selected vehicle-mounted radio station starts to transmit the latest software data through the wireless network in sequence.
And C4, after the transmission of the selected vehicle radio station is finished, the railway radio train dispatching vehicle radio station maintenance terminal receives the current vehicle radio station comprehensive state information again.
And C5, the maintenance terminal of the railway wireless train dispatching vehicle radio station re-inquires the data information of the current vehicle radio station software.
And C6, judging whether the current software data information of the vehicle-mounted radio station is consistent with the latest transmitted software data by the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station.
And C7, if the version data frame is consistent with the version data frame, displaying that the upgrade and maintenance of the current vehicle-mounted radio station is successful by the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station, and further forming a new version data frame to be recorded to a FLASH built in the FLASH module.
And C8, if the upgrade and maintenance of the current vehicle-mounted radio station are inconsistent, displaying the upgrade and maintenance failure of the current vehicle-mounted radio station by the railway wireless train dispatching vehicle-mounted radio station maintenance terminal, and then judging the failure reason, so as to form a new upgrade record data frame record to a FLASH arranged in the FLASH module.
As shown in fig. 5, in step A8, the wireless upload car station record and data subroutine performs the following operations:
d1, a maintainer selects a vehicle-mounted radio station which needs to upload records and data on an operation panel of the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station.
And D2, the selected vehicle radio station starts to transmit the record and the data stored in the vehicle radio station to the built-in FLASH of the FLASH module of the control unit sequentially through the wireless network.
And D3, after the transmission of the selected vehicle-mounted radio station is finished, the control unit of the railway radio train dispatching vehicle-mounted radio station maintenance terminal controls the main board to extract the record which is finished by the transmission in the FLASH module and synthesize the record file by the data, and then the synthesized record file is exported to a U disk or a personal computer for subsequent arrangement and analysis.
Claims (3)
1. A wireless maintenance upgrading method for a railway wireless train dispatching vehicle radio station maintenance terminal is characterized by comprising the following steps: the wireless maintenance upgrading method comprises the following steps:
a1, electrifying and initializing a maintenance terminal of a railway wireless train dispatching vehicle radio station;
a2, 4GLTE-R network and Wifi network set parameters;
a3, the maintenance terminal of the railway wireless train dispatching vehicle radio station selects a network mode for access to obtain an IP address;
a4, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal receives current vehicle-mounted radio station comprehensive state information periodically transmitted through A4 GLTE-R network or a Wifi network to acquire locomotive information;
a5, the railway wireless train dispatching vehicle radio station maintenance terminal automatically inquires the vehicle radio station software data information;
a6, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal respectively judges whether software data upgrading is needed or not, whether recording is needed or not and whether data uploading is needed or not according to the current vehicle-mounted radio station software data information which is automatically inquired;
a7, if software data upgrading is needed, entering a sub-program for upgrading the software data of the vehicle radio station in a wireless mode, otherwise, ending the program;
a8, if recording and data uploading are needed, entering a subprogram for wirelessly uploading the recording and data of the vehicle-mounted radio station, and if not, ending the subprogram;
in step A7, the radio upgrade vehicle radio station software data subroutine executes the following operations:
c1, injecting latest software data into the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station through a USB port or a personal computer;
c2, a maintainer selects a vehicle-mounted radio station which needs to be upgraded and maintained on an operation panel of the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station;
c3, the selected vehicle-mounted radio station starts to transmit the latest software data through the wireless network in sequence;
c4, after the transmission of the selected vehicle radio station is finished, the railway radio train dispatching vehicle radio station maintenance terminal receives the comprehensive state information of the current vehicle radio station again;
c5, the railway wireless train dispatching vehicle radio station maintenance terminal inquires the current vehicle radio station software data information again;
c6, the railway wireless train dispatching vehicle-mounted radio station maintenance terminal judges whether the current vehicle-mounted radio station software data information is consistent with the latest transmitted software data;
c7, if the version data frame is consistent with the version data frame, the railway wireless train dispatching vehicle radio station maintenance terminal displays that the upgrade and maintenance of the current vehicle radio station are successful, and then a new version data frame is formed and recorded to a FLASH arranged in the FLASH module;
c8, if the upgrade of the current vehicle radio station is inconsistent, the maintenance terminal of the vehicle radio station of the railway wireless train dispatching displays the upgrade maintenance failure of the current vehicle radio station, and then the failure reason is judged, so that a new upgrade record data frame is formed and recorded to a FLASH built in a FLASH module;
the maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station comprises a wireless access unit, a control unit and a power supply unit; the wireless access unit is connected with the control unit through a network cable, and the power supply unit is connected with the wireless access unit and the control unit through a power cable;
the wireless access unit comprises a 4GLTE-R module, a WIFI module, an interface module and an exchanger, and the 4GLTE-R module, the WIFI module and the interface module are all connected with the exchanger through network cables; the 4GLTE-R module and the WIFI module are respectively connected with a vehicle-mounted radio station 4GLTE-R network and a vehicle-mounted radio station WIFI network of an external locomotive radio station through a wireless network; the interface module is connected with an external personal computer through a network cable;
the control unit comprises a network interface module, a serial interface module, a USB interface module, a display screen module, a FLASH module and a control main board; the network interface module, the serial interface module, the USB interface module, the display screen module and the FLASH module are all connected with the control mainboard; the serial port interface module is respectively connected with the 4GLTE-R module and the WIFI module of the wireless access unit; the USB interface module is connected with external personal storage equipment;
the power supply unit comprises a charging circuit and a storage battery; the charging circuit is connected with a storage battery, and the storage battery is respectively connected with the switch of the wireless access unit and the control mainboard of the control unit.
2. The wireless maintenance upgrading method for the railway wireless train dispatching vehicle radio station maintenance terminal according to claim 1, characterized in that: in step A5, the automatic query of the data information of the vehicle radio station software performs the following operations:
b1, the maintenance terminal of the railway wireless train dispatching vehicle radio station automatically sends a software and hardware information query command to the current vehicle radio station;
b2, after receiving the software and hardware information query command, the current vehicle radio station returns software and hardware data version information to the maintenance terminal of the railway wireless train dispatching vehicle radio station;
b3, the maintenance terminal of the railway wireless train dispatching vehicle radio station receives the version information of the software and hardware data returned by the current vehicle radio station;
b4, the maintenance terminal of the railway wireless train dispatching vehicle radio station displays the version information of the software and hardware data returned by the current vehicle radio station to an operation panel;
and B5, the maintenance terminal of the railway wireless train dispatching vehicle radio station records the version information of the software and hardware data returned by the current vehicle radio station to a FLASH built in the FLASH module.
3. The wireless maintenance upgrading method of the railway wireless train dispatching vehicle-mounted radio station maintenance terminal according to claim 1, characterized in that: in step A8, the sub-routine for wirelessly uploading the vehicle radio station record and data executes the following operations:
d1, a maintainer selects a vehicle-mounted radio station which needs to upload records and data on an operation panel of a maintenance terminal of the railway wireless train dispatching vehicle-mounted radio station;
d2, the selected vehicle-mounted radio station starts to transmit the record and the data stored in the vehicle-mounted radio station to a built-in FLASH of a FLASH module of the control unit sequentially through the wireless network;
and D3, after the transmission of the selected vehicle-mounted radio station is finished, the control unit of the railway radio train dispatching vehicle-mounted radio station maintenance terminal controls the main board to extract the record which is finished by the transmission in the FLASH module and synthesize the record file by the data, and then the synthesized record file is exported to a U disk or a personal computer for subsequent arrangement and analysis.
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| CN102523281A (en) * | 2011-12-14 | 2012-06-27 | 天津七一二通信广播有限公司 | Cab integrated radio communication equipment maintenance system |
| CN206226459U (en) * | 2016-12-01 | 2017-06-06 | 北京锦鸿希电信息技术股份有限公司 | Ground installation, mobile unit and geographical location information data storehouse remote update system |
| CN107423824B (en) * | 2017-04-21 | 2023-10-24 | 中车大连电力牵引研发中心有限公司 | Train wireless maintenance device, system and server |
| CN111209017B (en) * | 2019-10-23 | 2023-09-22 | 高新兴创联科技股份有限公司 | GMS-based CIR file remote upgrading method |
| CN111976787A (en) * | 2020-08-27 | 2020-11-24 | 卡斯柯信号有限公司 | Remote maintenance system and method for STP vehicle-mounted equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703848A (en) * | 2015-10-09 | 2016-06-22 | 武汉中元通信股份有限公司 | System for carrying out online aging and automatic monitoring on multiple radio stations simultaneously |
| CN106528146A (en) * | 2016-10-28 | 2017-03-22 | 四川长虹电器股份有限公司 | Vehicle-mounted OBD terminal remote upgrading method |
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