CN200994144Y - Train data communication repeating device - Google Patents
Train data communication repeating device Download PDFInfo
- Publication number
- CN200994144Y CN200994144Y CN 200620166092 CN200620166092U CN200994144Y CN 200994144 Y CN200994144 Y CN 200994144Y CN 200620166092 CN200620166092 CN 200620166092 CN 200620166092 U CN200620166092 U CN 200620166092U CN 200994144 Y CN200994144 Y CN 200994144Y
- Authority
- CN
- China
- Prior art keywords
- ofdm
- train
- circuit
- module
- pass filtering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Small-Scale Networks (AREA)
Abstract
The utility model discloses a train data communication transponder device, mainly including two OFDM communication modules, an Ethernet switch module, a low-pass filter module and a RJ45 interface, two OFDM communication modules are connected with Ethernet switch module through a M II interface, two OFDM communication modules are connected with the train communication cable at the same time, input and output port of low-pass filter module are also connected with the train communication cable, Ethernet switch module is connected with RJ45 interface. A data transponder communication device is fixed on each carriage, then the terminal is connected with the RJ45 interface to realize data transmission of each carriage, the transmission is in the carriage, little affected by climate and environment, with reliable and stable transmission quality, and long transmission distance.
Description
Technical field
The utility model relates to a kind of communicator, particularly a kind of train data Communications Relay Set.
Background technology
Carry out transfer of data at present ON TRAINS, modal method is to adopt radio network technique to carry out transfer of data, adopt the method to carry out transfer of data, need not lay ethernet line in addition ON TRAINS, but because compartment itself has electromagnetic wave shielding, so data transfer signal can only be propagated outside car, transmission course is subjected to factor affecting such as weather, environment bigger, reliable and stable inadequately like this.
Summary of the invention
The purpose of this utility model is exactly at the existing in prior technology deficiency, can make the train data Communications Relay Set that transfer of data is reliable and stable and transmission range is far away and provide a kind of.
The purpose of this utility model is to realize like this, it mainly comprises two ofdm communication modules, ethernet switching module, low-pass filtering module and RJ45 mouth, two ofdm communication modules are connected with ethernet switching module by the MII interface, two ofdm communication modules are connected with the train communication cable simultaneously, the input port of low-pass filtering module also is connected with the train communication cable with delivery outlet, and ethernet switching module is connected with the RJ45 mouth;
Above-mentioned ofdm communication module comprises coupler, DSS7XXX series programmable amplifier, chip is the OFDM processor of DSS9XXX series, smoothed filter circuit, receive/send out diverter switch, high-pass filtering circuit, line drive circuit and reverse sawtooth filter circuit, wherein coupler is connected with high-pass filtering circuit with line drive circuit respectively by receiving/send out diverter switch, line drive circuit is connected programmable amplifier simultaneously with high-pass filtering circuit, programmable amplifier is connected with the OFDM processor, also be provided with smoothed filter circuit between the two, programmable amplifier also is connected with the reverse sawtooth filter circuit separately, also external FLASH of OFDM processor and RAM;
Above-mentioned ethernet switching module is made of RTL8305SC chip and interface circuit, and the RTL8305SC chip is connected with two OFDM processors simultaneously, and the RTL8305SC chip is connected with the RJ45 mouth by interface circuit.
In sum, the utility model train data Communications Relay Set, utilize existing telecommunication cable on the train, adopt the OFDM modulation technique to carry out transfer of data, and be connected with terminal on the train by the RJ45 mouth, transmission course all is to carry out in the compartment like this, be subjected to factor affecting such as weather, environment less, and because the signal relay effect of retransmission unit, the distance of transfer of data is also far away.
Description of drawings
Below in conjunction with accompanying drawing in detail concrete condition of the present utility model is described in detail
Fig. 1 is a structural principle block diagram of the present utility model
Fig. 2 is the structural principle block diagram of ofdm communication module
Fig. 3 is an application schematic diagram of the present utility model
Embodiment
As shown in Figure 1, the utility model discloses a kind of train data Communications Relay Set, it mainly comprises ofdm communication module 1 and ofdm communication module 2, an ethernet switching module, low-pass filtering module and RJ45 mouth, the formation of ethernet switching module 3 is RTL8305SC chips, two ofdm communication modules are connected with ethernet switching module by the MII interface, one of them ofdm communication module 1 is connected with train communication cable A, another ofdm communication module 2 is connected with train communication cable B, low-pass filtering module 4 connects train communication cable A and B respectively, ethernet switching module 3 is connected with RJ45 mouth 5, retransmission unit is to transmitting from the signal of telecommunication cable A and B, low-pass filtering module 4 is responsible for the low-frequency analog signal transmission, and the ofdm communication module is responsible for the forwarding of transfer of data.Specifically, signal from train communication cable A is divided into the data analog signal after low frequency signal and the modulation, low frequency part arrives train communication cable B by low-pass filtering module 4, data analog signal after the modulation enters ofdm communication module 1, demodulation becomes digital signal, interface by itself and ethernet switching module 3 arrives ethernet switching module, ethernet switching module 3 sends to packet its external Ethernet interface RJ45 mouth 5 again, this interface connects terminal by ethernet line, ethernet switching module 3 is forwarded to ofdm communication module 2 to packet simultaneously, ofdm communication module 2 is data-modulated that high-frequency signal is delivered to communications cable B, like this, the train data Communications Relay Set also plays the effect of signal relay in the process of transfer of data, so transfer of data is far away.Because communication is two-way, so communication data also can be input to the retransmission unit from train communication cable B, transfers by train communication cable A again and come next retransmission unit.
As shown in Figure 2, the theory diagram of two ofdm communication modules is identical, in accepting state, the high-frequency modulation signal that the coupler 6 of ofdm communication module 1 takes out on the telecommunication cable A, arrive reception high-pass filtering circuit 8 by receiving/send out diverter switch 7, after removing low-frequency noise, signal amplifies the back by programmable amplifier 9 (DSS7700) and enters OFDM processor 10 from the analog-to-digital conversion interface, OFDM processor adopting DSS9001 chip, with analog signal conversion is digital signal, and the data that will transmit are sent into Ethernet switching chip 3 (RTL8305SC) from the MII interface of OFDM processor again; In transmit status, packet from Ethernet switching chip 3 (RTL8305SC) enters OFDM processor 11 from the MII interface, processing is converted to analog signal with digital signal through OFDM, remove high-frequency noise through smoothed filter circuit 12 then, amplify by programmable amplifier 13 (DSS7700) again, arrive line drive circuit 14 then, obtain enough energy, through receiving/send out diverter switch 15, send on the telecommunication cable B by coupler 16, reverse sawtooth filtering 17 is auxiliary circuits of programmable amplifier among the figure, amplifies the noise that produces in order to eliminate.
As shown in Figure 3, place a server 18 in the railway car, server 18 directly links to each other with terminal 20, can carry out bidirectional data transfers between them, server 18 links to each other with retransmission unit 19, retransmission unit 19 links to each other with the retransmission unit 21 in other compartment by telecommunication cable again, the in succession terminal 22 in this compartment of retransmission unit 21, the data of server 18 are by retransmission unit 19 like this, retransmission unit 21 and telecommunication cable are transferred to terminal 22, the data of terminal 22 also are transferred to server 18 conversely simultaneously, the terminal in other compartment is also carried out bidirectional data transfers by identical mode and server 18, the retransmission unit in each compartment just carries out transfer of data by telecommunication cable like this, each retransmission unit also plays the effect of signal relay in the process of transfer of data simultaneously, so data can too much not decay because of the compartment number of train in the process of transmission.
Claims (3)
1, a kind of train data Communications Relay Set, it is characterized in that: it mainly comprises two ofdm communication modules, ethernet switching module, low-pass filtering module and RJ45 mouth, two ofdm communication modules are connected with ethernet switching module by the MII interface, two ofdm communication modules are connected with the train communication cable simultaneously, the input port of low-pass filtering module also is connected with the train communication cable with delivery outlet, and ethernet switching module is connected with the RJ45 mouth.
2, train data Communications Relay Set as claimed in claim 1, it is characterized in that: the ofdm communication module comprises coupler, DSS7XXX series programmable amplifier, chip is the OFDM processor of DSS9XXX series, smoothed filter circuit, receive/send out diverter switch, high-pass filtering circuit, line drive circuit and reverse sawtooth filter circuit, wherein coupler is connected with high-pass filtering circuit with line drive circuit respectively by receiving/send out diverter switch, line drive circuit is connected programmable amplifier simultaneously with high-pass filtering circuit, programmable amplifier is connected with the OFDM processor, also be provided with smoothed filter circuit between the two, programmable amplifier also is connected with the reverse sawtooth filter circuit separately, also external FLASH of OFDM processor and RAM.
3, train data Communications Relay Set as claimed in claim 1, it is characterized in that: ethernet switching module is made of RTL8305SC chip and interface circuit, the RTL8305SC chip is connected with two OFDM processors simultaneously, and the RTL8305SC chip is connected with the RJ45 mouth by interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166092 CN200994144Y (en) | 2006-12-12 | 2006-12-12 | Train data communication repeating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620166092 CN200994144Y (en) | 2006-12-12 | 2006-12-12 | Train data communication repeating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200994144Y true CN200994144Y (en) | 2007-12-19 |
Family
ID=38947214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620166092 Expired - Lifetime CN200994144Y (en) | 2006-12-12 | 2006-12-12 | Train data communication repeating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200994144Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647206A (en) * | 2011-12-31 | 2012-08-22 | 上海通号轨道交通工程技术研究中心有限公司 | Carrier communication system with contact systems |
| CN102710469A (en) * | 2012-03-21 | 2012-10-03 | 上虞市舜创电子科技有限公司 | Railway communication module based on HomePlugAV standards |
| CN105141336A (en) * | 2014-05-28 | 2015-12-09 | 阿尔斯通运输科技简易股份公司 | Data communication system, railway system comprising such a communication system and related communication method |
| CN111355516A (en) * | 2020-03-23 | 2020-06-30 | 深圳市大拿科技有限公司 | Short-distance communication method and system for rail transit transport vehicle |
| CN113114711A (en) * | 2019-12-24 | 2021-07-13 | 华为技术有限公司 | Data transmission method and device and computer readable storage medium |
-
2006
- 2006-12-12 CN CN 200620166092 patent/CN200994144Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647206A (en) * | 2011-12-31 | 2012-08-22 | 上海通号轨道交通工程技术研究中心有限公司 | Carrier communication system with contact systems |
| CN102710469A (en) * | 2012-03-21 | 2012-10-03 | 上虞市舜创电子科技有限公司 | Railway communication module based on HomePlugAV standards |
| CN105141336A (en) * | 2014-05-28 | 2015-12-09 | 阿尔斯通运输科技简易股份公司 | Data communication system, railway system comprising such a communication system and related communication method |
| CN105141336B (en) * | 2014-05-28 | 2018-12-25 | 阿尔斯通运输科技简易股份公司 | Data communication system, the railway system and relevant communication means |
| CN113114711A (en) * | 2019-12-24 | 2021-07-13 | 华为技术有限公司 | Data transmission method and device and computer readable storage medium |
| CN111355516A (en) * | 2020-03-23 | 2020-06-30 | 深圳市大拿科技有限公司 | Short-distance communication method and system for rail transit transport vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201876480U (en) | Wideband/narrowband integrated meter-reading device | |
| CN200994144Y (en) | Train data communication repeating device | |
| CN1719756A (en) | Method for implementing mobile communication digital optical fibre repeater system | |
| CN102231885B (en) | Multifunctional micro-power indoor distributed system | |
| CN105530178A (en) | Vehicular gateway device | |
| CN109547314A (en) | One kind being based on the cascade M-LVDS bus system of long line and method | |
| CN203466854U (en) | HDLC gateway device for rail train | |
| CN104009901A (en) | CAN repeater based on LPC1768 platform and data forwarding method | |
| JP2018014716A (en) | Non-contact transmission coupler for data network | |
| CN103684577B (en) | A kind of GSM based on rail transit electric power contact system, apparatus and method | |
| CN202059409U (en) | Zero line-data line coupling mode low pressure power line communication system | |
| CN202261286U (en) | Self-adaptive modulator-demodulator on basis of time diversity | |
| CN101800716B (en) | Method and system for improving output performance, outdoor unit and indoor unit | |
| CN206658201U (en) | A kind of multi-functional mixed duplexing transceiver of biography | |
| CN202652401U (en) | System capable of realizing two-way data transmission in coaxial cable by employing frequency division multiplexing | |
| CN210225439U (en) | Special ultra-long-distance DSL four-network-port relay module with cascade function for coal mine | |
| CN201623710U (en) | Digital fiber zooming system with both GSM and WCDMA | |
| CN102118305A (en) | Service board of communication equipment and communication equipment employing same | |
| CN201166919Y (en) | Intelligent extension plate and vehicle-mounted terminal containing the same | |
| CN203608257U (en) | Radio station connection controller | |
| CN113676337B (en) | MVB bus line concentrator | |
| CN200947602Y (en) | Modem of four-line E/M interface based on fiber/microwave transmission | |
| CN204350319U (en) | A kind of LTE digital optical-fiber remote system | |
| CN203554444U (en) | Optical fiber repeater with unvarnished transmission function | |
| CN101917360A (en) | Device, method and system for extracting high-speed signal in mixing signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071219 |
|
| EXPY | Termination of patent right or utility model |