Rail transit multi-network integration vehicle-mounted communication device and rail train

Abstract

The utility model provides a rail transit multi-network integration vehicle-mounted communication device, which comprises a shell, a power supply module and an antenna module, a broadband communication unit, a narrowband communication unit and a processing unit are arranged in the shell, and both the broadband communication unit and the narrowband communication unit are electrically connected with the antenna module; the broadband communication unit and the narrowband communication unit are connected with the switching unit through the processing unit. The broadband communication unit, the narrowband communication unit, the processing unit and the switching unit are electrically connected with the power supply module, and the broadband communication unit and the narrowband communication unit are connected with the antenna module through feeder lines; the utility model further provides a rail train which comprises the vehicle-mounted communication device. According to the utility model, the broadband communication unit and the narrowband communication unit are integrated in the vehicle-mounted communication device, so that the number of rail train communication equipment can be greatly reduced, high-efficiency utilization of hardware can be realized, the complexity of a rail vehicle-mounted communication system is reduced, and the overall stability and reliability are improved.

Description

Technical Field

[0001] The utility model relates to vehicle-mounted communication, in particular to a rail transit multi-network fusion vehicle-mounted communication device and a rail train. Background Art

[0002] The urban rail transit wireless communication system is a vital communication subsystem to ensure the remote command and dispatch, disaster relief and safe operation of rail transit, and plays an important role in improving the efficiency and operational safety of rail transit. At present, 7 types of wireless communication systems are used in urban rail transit, carrying many services such as: train operation control (CBTC), cluster dispatching, passenger information service (PIS), etc. Due to the long construction period and the lack of unified standards in various regions, the above services use a variety of wireless communication systems, such as: 5G public and private networks (using the 5G network provided by operators), TETRA (terrestrial cluster radio), LTE-M (3GPP long-term evolution), WLAN (wireless local area network), EUHT (ultra-high-speed mobile communication system), DVB-T (digital video broadcasting), millimeter wave (Huawei Airflash), Mcwill (multi-carrier wireless information local loop), among which the more mainstream are TETRA, LTE-M, WLAN and 5G public and private networks. In actual use, the above systems are different in key indicators such as bandwidth, delay, packet loss, switching, mobility, etc., so they are also differentiated in the services they carry. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a multi-network integrated vehicle-mounted communication device and a rail train for rail transit, which are used to solve the problem that the terminal devices of vehicle-mounted communications in the existing rail transit are relatively large and the settings are complicated.

[0004] The utility model is achieved in this way:

[0005] An embodiment of the utility model provides a rail transit multi-network integration vehicle-mounted communication device, including a shell, a power module and an antenna module, wherein the power module and the antenna module are installed on the shell, and a broadband communication unit, a narrowband communication unit and a processing unit are arranged in the shell, and the broadband communication unit and the narrowband communication unit are both electrically connected to the antenna module; a switching unit is arranged on the shell, and the broadband communication unit and the narrowband communication unit are both connected to the switching unit through the processing unit; the broadband communication unit, the narrowband communication unit, the processing unit and the switching unit are all electrically connected to the power module, and the broadband communication unit and the narrowband communication unit are both connected to the antenna module through a feeder.

[0006] Furthermore, the broadband communication unit includes a first mounting seat, an LTE-M module, a 5G module and a WLAN module, and the LTE-M module, the 5G module and the WLAN module can all be detachably installed on the first mounting seat, and the first mounting seat is installed on the inner wall of the shell.

[0007] Furthermore, the exchange unit includes a plurality of data interfaces, each of which is mounted on the housing, and each of which is electrically connected to the processing unit.

[0008] Furthermore, the antenna module includes a conformal antenna arranged on the surface of the shell, and the feed line passes through the shell to connect the conformal antenna.

[0009] Furthermore, the narrowband communication unit comprises a TETRA module, a DMR module and a second mounting seat, the TETRA module and the DMR module can be detachably mounted on the second mounting seat, and the second mounting seat is installed on the inner wall of the shell.

[0010] Furthermore, it also includes a satellite module, which is installed in the shell, connected to the switching unit through the processing unit, and electrically connected to the power module.

[0011] Furthermore, it also includes an Internet of Things module, which is integrated on the outside of the shell and is electrically connected to the processing unit.

[0012] Furthermore, the Internet of Things module includes an RFID, BLE, ZigBee, LoRaWAN or UWB finished card, and the RFID, BLE, ZigBee, LoRaWAN or UWB finished card is detachably mounted on the shell through a third mounting seat, and the third mounting seat is electrically connected to the processing unit.

[0013] Furthermore, the power module includes a battery and a power supply circuit, a power interface connected to the power supply circuit is provided on the shell, and the battery is connected to the broadband communication unit, the narrowband communication unit, the processing unit and the switching unit through the power supply circuit.

[0014] An embodiment of the utility model further provides a rail train, comprising a vehicle body, wherein the above-mentioned vehicle-mounted communication device is arranged at the front and the rear of the vehicle body.

[0015] The utility model has the following beneficial effects:

[0016] In the utility model, a broadband communication unit and a narrowband communication unit are integrated in the vehicle-mounted communication device, wherein the narrowband communication unit matches the existing narrowband communication network of rail transit, while the broadband communication unit can carry services such as rail transit CBTC and cluster dispatching. The processing unit can control the corresponding channel switch according to the network parameters received and sent, and the AP module can be used for the processing unit, thereby realizing the fusion of multiple networks in the vehicle-mounted communication device, which can not only realize the efficient use of hardware, reduce the complexity of the rail vehicle-mounted communication system, but also improve the overall stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the connection of each unit module of the rail transit multi-network integration vehicle-mounted communication device provided by an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the connection between the antenna module and each communication unit of the rail transit multi-network integration vehicle-mounted communication device provided by an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the structure of a data interface of a rail transit multi-network fusion vehicle-mounted communication device provided in an embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the interaction between the rail transit multi-network integration vehicle-mounted communication device and the in-vehicle switch provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 as well as Figure 2The embodiment of the utility model provides a rail transit multi-network fusion vehicle-mounted communication device, which is mainly used in urban rail transit trains, including a housing, a power module and an antenna module. The housing is the main body of the vehicle-mounted communication device, which has an internal space and can usually adopt a rectangular parallelepiped structure, which is formed by splicing six panels. The antenna module and the power module are both installed on the housing, the antenna module is installed on the outside of the housing, and the power module is installed on the inside of the housing.

[0024] A broadband communication unit, a narrowband communication unit and a processing unit are also arranged inside the shell, wherein the broadband communication unit and the narrowband communication unit are both connected to the antenna module for communication, for example, the two are connected via a feeder, a through hole is arranged on the shell, and the feeder passes through the through hole. A switching unit and a processing unit are arranged on the shell, wherein the processing unit is located inside the shell, and is used to select a corresponding communication channel according to communication parameters, and the switching unit is located on one of the panels of the shell, and is used to realize information exchange between the vehicle-mounted communication device and the outside world, and the broadband communication unit and the narrowband communication unit are connected to the switching unit via the processing unit. In addition, the broadband communication unit, the narrowband communication unit, the processing unit and the switching unit are all electrically connected to the power module, and the power module is used to supply power to the above four.

[0025] In this embodiment, the processing module is an AP module (application processor), which uses an existing AP chip, such as an ARM processor. The present invention does not make further improvements thereto. Specifically, the corresponding channel can be opened or closed according to the network parameters of the broadband communication unit, the narrowband communication unit, and the antenna unit. This is a prior art, such as the AP modules disclosed in patents CN201410822150.0, CN201711211456.2, and CN201720340752.1, which can all realize the routing and forwarding of wireless signals. Since the prior art is used, it will not be repeated here.

[0026] The broadband communication unit is refined, and includes an LTE-M module, a 5G module, and a WLAN module, all of which are independent module structures. Among them, the LTE-M module corresponds to the 4G system and complies with the 3GPP standard; the 5G module can use the 5G public network of the mobile communication operator and divide the VPN dedicated channel separately, which is generally used for voice and data communication; the WLAN module is a more mainstream WLAN wireless standard for rail transit, and is an 802.11ac / ax technical system officially approved by IEEE, which is generally used for data communication. The broadband communication unit also includes a first mounting seat, and the above-mentioned LTE-M module, 5G module and WLAN module can be detachably installed on the first mounting seat, and the first mounting seat is fixedly installed on the inner wall of the shell, and the first mounting seat is provided with mounting grooves corresponding to the LTE-M module, 5G module and WLAN module one by one, and a corresponding electrical connector is provided in each mounting groove, and the electrical connector is electrically connected to the processing unit, the power module and the antenna module. Therefore, when the LTE-M module, the 5G module or the WLAN module needs to be maintained, only the corresponding module needs to be replaced, which is very convenient.

[0027] For the narrowband communication unit, it includes a TETRA module, a DMR module and a second mounting seat, wherein the second mounting seat is similar to the structure of the first mounting seat, and the TETRA module and the DMR module can be detachably mounted on the second mounting seat, and the second mounting seat is an electrical switching structure for the two. The TETRA module and the DMR module realize the electrical connection relationship with the processing unit, the power module and the antenna module through the second mounting seat. And when the TETRA module or the DMR module needs maintenance, only the corresponding module needs to be replaced, which is very convenient. For the TETRA module, it is a 2G system, and the technical system is stable and reliable. At present, 70% of the rail transit projects in the country use TETRA (800MHz); and the DMR module can realize functions such as digital train modulation and emergency intercom.

[0028] See also Figure 3In one embodiment, the exchange unit includes a plurality of data interfaces, each of which is installed on the housing, and each of which is electrically connected to the processing unit. In this embodiment, a plurality of mounting holes are provided on one side panel of the housing, each of which is installed in the corresponding mounting hole, one end of each data interface faces the outside of the housing, and the other end faces the inside of the housing, and an external connector or a line row can be threaded or plugged with each data interface, and the processing unit is electrically connected to the inner side of each data interface through an internal connecting line and a processing module. In a preferred embodiment, a safety unit is added between the exchange unit and the processing unit, that is, the processing unit is connected to the exchange unit through the safety unit, and the security of data transmission can be achieved through the safety unit. In addition, the processing unit is also connected to the storage unit, and the short-term data or long-term data obtained by the processing unit can be stored in the storage unit, especially the vehicle-mounted CCTV system data can be stored in the storage unit, and transmitted back to the control center when the vehicle loses power at night.

[0029] In one embodiment, the antenna module includes a conformal antenna, which is arranged on the outer surface of the shell, and the feeder passes through the shell to connect the conformal antenna. In this embodiment, the conformal antenna relies on the shape of the shell, for example, the 4G antenna and the 5G antenna are placed in a conformal space, thereby reducing the number of through holes on the shell for the feeder to pass through. Of course, in order to avoid interference between the 4G antenna and the 5G antenna, a filter is provided on the corresponding feeder circuit.

[0030] Alternatively, the narrowband communication unit uses a set of antennas with a frequency of 150MHz to 900MHz; the broadband communication unit uses a set of antennas with a frequency of 600MHz to 6GHz. Usually, the antenna is compatible with 4G, 5G, and WIFI communications.

[0031] Or the antenna module includes multiple sets of antennas, which correspond one-to-one to the communication modules corresponding to the communication units, and the antennas and the communication modules are connected one-to-one via feeders.

[0032] In one embodiment, the vehicle-mounted communication device also includes a satellite module, which is installed in the shell and connected to the exchange unit through the processing unit, and the satellite module is electrically connected to the power module. The satellite module is responsible for receiving and sending wireless GNSS and NTN signals for wireless communication, wherein GNSS mainly realizes the positioning function and NTN realizes satellite data communication. The antenna corresponding to the satellite module can be integrated with the antenna corresponding to the broadband communication unit, and of course the two can also be separated. The GNSS signal of the antenna module mainly adopts the Beidou module, and the frequency mainly considers the Beidou frequency band, and the NTN frequency band considers L-band and S-band: B255 / B256 / B23 / B2.

[0033] In one embodiment, the vehicle-mounted communication device further includes an Internet of Things module, which is integrated on the outside of the shell, and the Internet of Things module is electrically connected to the processing unit. Specifically, the Internet of Things module includes an RFID, BLE, ZigBee, LoRaWAN or UWB finished card, which is detachably mounted on the shell through a third mounting seat, and the third mounting seat is electrically connected to the processing unit. In this embodiment, the Internet of Things module is arranged on the outside of the shell, and the third mounting seat is close to the first mounting seat and the second mounting seat. The electrical connection relationship between the above-mentioned finished cards and the processing unit is realized through the third mounting seat, and the above-mentioned finished cards can be detachably installed on the third mounting seat as needed, that is, the Internet of Things module adopts a modular design, and network access is realized by inserting RFID, BLE, ZigBee, LoRaWAN, UWB finished cards. The Internet of Things module mainly realizes communication between the vehicle and equipment such as trackside and in the warehouse, and realizes interoperability between the vehicle and the external environment. In the preferred solution, since the power of the Internet of Things module is relatively low, it is integrated into the antenna module, so that the Internet of Things module can be melted into the antenna module, thereby reducing the feeder loss.

[0034] The power module is refined, and includes a battery and a power supply circuit. A power supply interface is provided on the housing, and the power supply circuit is connected to the power supply interface, and the battery is connected to the wideband communication unit, the narrowband communication unit, the processing unit and the switching unit through the power supply circuit. When the on-board communication device is installed on a rail train, the power supply interface can supply power to the on-board communication device through an external power line, and can also directly supply power to each unit module in the housing through the battery, that is, the on-board communication device can operate independently of other equipment on the rail train.

[0035] The on-board communication device provided in the embodiment of the present utility model abandons the one-network-one-terminal solution in the traditional solution. For example, in a typical case, two sets of TETRA terminals, four sets of LTE-M terminals, and two sets of WLAN or 5G terminals are installed on the rail train, totaling about 8 sets, requiring a total of about 16U, occupying the precious equipment cabinet space in the rail train, but assuming that the rail train adopts the on-board communication device provided in this embodiment, it can be reduced to 4-8U). In addition, the on-board communication device solves the bottleneck of the wireless network channel and decouples the strong binding relationship between the business flow, data flow and the network itself. In addition, in the embodiment of the present utility model, each module can adopt existing functional modules, such as the LTE-M module, 5G module and WLAN module of the broadband communication unit, the TETRA module, DMR module of the narrowband communication unit, the antenna module, the processing module, the switching module, the storage module and the security module, etc., and all the above modules are integrated into the on-board communication device to realize the multi-network integration of the rail train.

[0036] See also Figure 4The embodiment of the utility model also provides a rail train, including a car body and the above-mentioned on-board communication device. Specifically, the on-board communication device is arranged in the equipment cabinets at the front and rear of the car body, and can establish uplink and downlink transmission channels with the network side of the vehicle-to-ground communication system on the ground, and at the same time be connected to the in-car switch through a connector, etc., so as to realize the data interaction between wireless communication and the in-car switch, wherein the LTE-M private network, 5G network and WIFI are all network side devices, and the LTE-M private network is built with a dedicated authorized frequency band of 1785-1805MHz, mainly carrying CBTC / voice dispatch / PIS / CCTV / emergency text sending services, and the 5G network + WIFI carries CCTV services and other large-bandwidth services. When carrying voice dispatch services, the on-board communication device can be set on the center console of the driver's cab, and the on-board communication device is connected to the TAU through a control (signal) cable.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rail transit multi-network fusion vehicle-mounted communication device, comprising a housing, a power module and an antenna module, wherein the power module and the antenna module are mounted on the housing, characterized in that: A broadband communication unit, a narrowband communication unit and a processing unit are arranged in the shell, and the broadband communication unit and the narrowband communication unit are electrically connected to the antenna module; a switching unit is arranged on the shell, and the broadband communication unit and the narrowband communication unit are connected to the switching unit through the processing unit; the broadband communication unit, the narrowband communication unit, the processing unit and the switching unit are electrically connected to the power module, and the broadband communication unit and the narrowband communication unit are connected to the antenna module through a feeder.

2. The rail transit multi-network integration vehicle-mounted communication device according to claim 1, characterized in that: The broadband communication unit includes a first mounting seat, an LTE-M module, a 5G module and a WLAN module. The LTE-M module, the 5G module and the WLAN module can all be detachably mounted on the first mounting seat, and the first mounting seat is installed on the inner wall of the shell.

3. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 1, characterized in that: The exchange unit includes a plurality of data interfaces, each of which is mounted on the housing and is electrically connected to the processing unit.

4. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 1, characterized in that: The antenna module includes a conformal antenna arranged on the surface of the shell, and the feed line passes through the shell to connect the conformal antenna.

5. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 1, characterized in that: The narrowband communication unit comprises a TETRA module, a DMR module and a second mounting seat. Both the TETRA module and the DMR module can be detachably mounted on the second mounting seat, and the second mounting seat is arranged on the inner wall of the housing.

6. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 1, characterized in that: It also includes a satellite module, which is installed in the shell, connected to the switching unit through the processing unit, and electrically connected to the power module.

7. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 1, characterized in that: It also includes an Internet of Things module, which is integrated on the outside of the shell and is electrically connected to the processing unit.

8. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 7, characterized in that: The Internet of Things module includes an RFID, BLE, ZigBee, LoRaWAN or UWB finished card, and the RFID, BLE, ZigBee, LoRaWAN or UWB finished card is detachably mounted on the shell through a third mounting seat, and the third mounting seat is electrically connected to the processing unit.

9. The rail transit multi-network integration vehicle-mounted communication device as claimed in claim 1, characterized in that: The power module includes a battery and a power supply circuit. A power interface connected to the power supply circuit is provided on the shell, and the battery is connected to the broadband communication unit, the narrowband communication unit, the processing unit and the switching unit through the power supply circuit.

10. A rail train, comprising a vehicle body, characterized in that: The vehicle-mounted communication device as claimed in any one of claims 1 to 9 is arranged at the front and rear of the vehicle body.

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