CN202535380U - Railway communication module based on HomePlugAV standard - Google Patents
Railway communication module based on HomePlugAV standard Download PDFInfo
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- CN202535380U CN202535380U CN2012201146562U CN201220114656U CN202535380U CN 202535380 U CN202535380 U CN 202535380U CN 2012201146562 U CN2012201146562 U CN 2012201146562U CN 201220114656 U CN201220114656 U CN 201220114656U CN 202535380 U CN202535380 U CN 202535380U
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Abstract
The utility model discloses a railway communication module, wherein a railway communication module body comprises a communication processing module, a system operation monitoring module and a power supply conversion module, the power supply conversion module is connected between a power supply input interface through which electric power is supplied for a system and the communication processing module, the communication processing module for realizing bidirectional signal transmission is connected with an Ethernet interface and a carrier interface through signal lines, between the carrier interface and the communication processing module there are orderly provided a signal coupling module, a carrier signal filtering module and an AD/DA converter, the communication processing module is connected with the system operation monitoring module, and between the system operation monitoring module and the communication processing module there is provided a reset control module. The railway communication module based on a HomePlugAV standard has the beneficial effects of providing a network interface, realizing real-time monitoring, ensuring system reliability, being strong in anti-interference, very stable in performance and high in system utilization rate, and realizing point-to-point or data sharing transmission.
Description
Technical field
The utility model relates to a kind of communication apparatus that is used for railway video signal transmission, field control and data acquisition, particularly a kind of railway communication module based on the HomePlugAV standard.
Background technology
There is following defective in existing railway system communication system: at first; In the abominable running environment of the railway system; Do not have real-time monitoring equipment, cause the ruuning situation of judgement system that can not be promptly and accurately, when the deadlock phenomenon occurring, can not in time reset system; Secondly, the antijamming capability of existing system is not strong, has intersymbol interference; Once more, wave communication part can modulation system single with frequency transmission data mode, the utilance of system is not high.
The utility model content
To the defective of existing railway communication system, the utility model provides a kind of railway communication module based on the HomePlugAV standard.
To achieve these goals, the measure taked of the utility model is:
A kind of railway communication module based on the HomePlugAV standard; Body comprises communication processing module, system's operation monitoring module and power transfer module; Realization is to being connected with power transfer module between the power input interface of system power supply and the communication processing module; The communication processing module that realizes the two-way signaling transmission is through holding wire and Ethernet interface and carrier interface; Set gradually signal coupling module, carrier signal filtration module and ad/da converter between carrier interface and the communication processing module; Be connected with system's operation monitoring module, synchronous DRAM (SDRAM) and FLASH module on the communication processing module; Be provided with the control module that resets between system's operation monitoring module and the communication processing module, ad/da converter, synchronous DRAM (SDRAM) and FLASH module all link to each other with realizing the power transfer module to system's power supply;
CPU is handled in the carrier communication that said communication processing module is the HomePlugAV standard;
Said power input interface is 12V single channel input interface or 12V dual input interface or 3.3V dual input interface;
Carrier wave adjusting pattern is modulating mode OFDM1024/256/64/16/8-QAM or QPSK or BPSK ROBO;
The bandwidth of said too network interface is 10M/100M;
Said power transfer module comprises the pressurizer of DC-DC transducer and the 12V of 12V to the DC-DC transducer of 3.3V, 3.3V to 1.05V to 11.4V;
Module is provided with Ethernet indicator light, POWER indicator light and PLC indicator light.
The beneficial effect of the utility model a: network interface is provided; To the abominable running environment of the railway system, inside modules is provided with a system monitoring MCU, the ruuning situation of real-time supervisory control system, as the deadlock phenomenon appears, and in time system is resetted, make system roll-back, guaranteed the reliability of system; Antijamming capability is strong, performance is highly stable; Because the system of OFDM form is distributed to data on many number of sub-carrier; Greatly reduce the character rate of each subcarrier; Thereby weaken the influence of multipath transmisstion,, even can eliminate intersymbol interference fully if add Cyclic Prefix as protection method at interval through employing again; The carrier communication part can select best modulation system and frequency to transmit data according to the situation of different transmission lines automatically, has improved the utilance of system; Through choosing each subchannel; The bit number of each symbol and the power of distributing to each subchannel make gross bit rate maximum, promptly require each subchannel information to distribute and should follow " the water filling theorem " in the information theory, that is the high-quality channel transmits more; Poor channel transmits less, the principle that channel inferior does not transmit; Can realize the transmission of point-to-multipoint or data sharing, realize in the General System that the module of sharing transmission should be less than 32.
Description of drawings
The functional-block diagram of Fig. 1, the utility model.
Embodiment
A kind of railway communication module, HomePlugAV based on the HomePlugAV standard be a kind of speed in other networking Technology on Power Lines of 200Mbps level, be used for satisfying the needs of family digital multi-media network specially.Body comprises communication processing module, system's operation monitoring module and power transfer module; Realization is to being connected with power transfer module between the power input interface of system power supply and the communication processing module; The communication processing module that realizes the two-way signaling transmission is through holding wire and Ethernet interface and carrier interface; Set gradually signal coupling module, carrier signal filtration module and ad/da converter between carrier interface and the communication processing module; Be connected with system's operation monitoring module, synchronous DRAM (SDRAM) and FLASH module on the communication processing module; Be provided with the control module that resets between system's operation monitoring module and the communication processing module, ad/da converter, synchronous DRAM (SDRAM) and FLASH module all link to each other with realizing the power transfer module to system's power supply; CPU is handled in the carrier communication that said communication processing module is the HomePlugAV standard; Said power input interface is 12V single channel input interface or 12V dual input interface or 3.3V dual input interface; Carrier wave adjusting pattern is modulating mode OFDM1024/256/64/16/8-QAM or QPSK or BPSK ROBO; The bandwidth of said too network interface is 10M/100M; Said power transfer module comprises the pressurizer of DC-DC transducer and the 12V of 12V to the DC-DC transducer of 3.3V, 3.3V to 1.05V to 11.4V, 3.3V output power of power supply 3.5W, and the power output of 1.05V is 1.2W, the 11.4V power output is 1W; Module is provided with Ethernet indicator light, POWER indicator light and PLC indicator light, and the Ethernet indicator light shows the Ethernet interface indication, and the POWER indicator light is realized the working state of system indication, and the PLC indicator light is realized the carrier communication indication.
The radio frequency occupancy of carrier communication is 7～30MHZ, and radio frequency power output is 96-106dBuv, and the radio frequency receiving sensitivity is-50dBm that transmission range is about 800 meters (special-purpose noiseless circuits); The standard that data link is followed is IEEE 802.3, IEEE 802.3x and IEEE 802.3u Auto MDI (X), and the up-downgoing agreement is EOCMA, and forwarding rate is 200Mbps, and cipher mode is encrypted for 128-bit AES.
The overall dimension of the utility model is (88 millimeters of length) * (60 millimeters of length) * (20 millimeters of height); Working temperature is 0～50 degree centigrade; Storing temperature is-10～70 degrees centigrade, and working relative humidity is 20%～85% non-condensation, and storage humidity is 10%～90% non-condensation.
The operation principle of the utility model: communication module changes into ethernet signal the OFDM radiofrequency signal that meets the HomePlugAV standard; And be coupled to radiofrequency signal on the supporting holding wire of railway; Decode after receiving the OFDM radiofrequency signal that the supporting holding wire of railway comes simultaneously; And convert ethernet signal to, realize two-way transparent transmission.
The beneficial effect of the utility model a: network interface is provided; To the abominable running environment of the railway system, inside modules is provided with a system monitoring MCU, the ruuning situation of real-time supervisory control system, as the deadlock phenomenon appears, and in time system is resetted, make system roll-back, guaranteed the reliability of system; Antijamming capability is strong, performance is highly stable; Because the system of OFDM form is distributed to data on many number of sub-carrier; Greatly reduce the character rate of each subcarrier; Thereby weaken the influence of multipath transmisstion,, even can eliminate intersymbol interference fully if add Cyclic Prefix as protection method at interval through employing again; The carrier communication part can select best modulation system and frequency to transmit data according to the situation of different transmission lines automatically, has improved the utilance of system; Through choosing each subchannel; The bit number of each symbol and the power of distributing to each subchannel make gross bit rate maximum, promptly require each subchannel information to distribute and should follow " the water filling theorem " in the information theory, that is the high-quality channel transmits more; Poor channel transmits less, the principle that channel inferior does not transmit; Can realize the transmission of point-to-multipoint or data sharing, realize in the General System that the module of sharing transmission should be less than 32.
Those skilled in the art's simple change and replacement all are within the protection range of the utility model in this area.
Claims (7)
1. railway communication module based on the HomePlugAV standard; It is characterized in that: body comprises communication processing module, system's operation monitoring module and power transfer module; Realization is to being connected with power transfer module between the power input interface of system power supply and the communication processing module; The communication processing module that realizes the two-way signaling transmission is through holding wire and Ethernet interface and carrier interface; Set gradually signal coupling module, carrier signal filtration module and ad/da converter between carrier interface and the communication processing module; Be connected with system's operation monitoring module, synchronous DRAM (SDRAM) and FLASH module on the communication processing module; Be provided with the control module that resets between system's operation monitoring module and the communication processing module, ad/da converter, synchronous DRAM (SDRAM) and FLASH module all link to each other with realizing the power transfer module to system's power supply.
2. a kind of railway communication module based on the HomePlugAV standard according to claim 1 is characterized in that: CPU is handled in the carrier communication that said communication processing module is the HomePlugAV standard.
3. a kind of railway communication module based on the HomePlugAV standard according to claim 1 is characterized in that: said power input interface is 12V single channel input interface or 12V dual input interface or 3.3V dual input interface.
4. a kind of railway communication module based on the HomePlugAV standard according to claim 1 is characterized in that: carrier wave adjusting pattern is modulating mode OFDM1024/256/64/16/8-QAM or QPSK or BPSK ROBO.
5. a kind of railway communication module based on the HomePlugAV standard according to claim 1, it is characterized in that: the bandwidth of said too network interface is 10M/100M.
6. a kind of railway communication module based on the HomePlugAV standard according to claim 3 is characterized in that: said power transfer module comprises the pressurizer of DC-DC transducer and the 12V of 12V to the DC-DC transducer of 3.3V, 3.3V to 1.05V to 11.4V.
7. according to the described a kind of railway communication module based on the HomePlugAV standard of arbitrary claim in the claim 1～5, it is characterized in that: module is provided with Ethernet indicator light, POWER indicator light and PLC indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201146562U CN202535380U (en) | 2012-03-21 | 2012-03-21 | Railway communication module based on HomePlugAV standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201146562U CN202535380U (en) | 2012-03-21 | 2012-03-21 | Railway communication module based on HomePlugAV standard |
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| Publication Number | Publication Date |
|---|---|
| CN202535380U true CN202535380U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201146562U Expired - Lifetime CN202535380U (en) | 2012-03-21 | 2012-03-21 | Railway communication module based on HomePlugAV standard |
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| Country | Link |
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| CN (1) | CN202535380U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667541A (en) * | 2018-04-11 | 2018-10-16 | 大连理工大学 | A kind of train digital broadcast controller based on HomePlug |
| CN110494844A (en) * | 2017-04-05 | 2019-11-22 | 住友电气工业株式会社 | Control equipment, transfer approach and computer program |
-
2012
- 2012-03-21 CN CN2012201146562U patent/CN202535380U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110494844A (en) * | 2017-04-05 | 2019-11-22 | 住友电气工业株式会社 | Control equipment, transfer approach and computer program |
| CN108667541A (en) * | 2018-04-11 | 2018-10-16 | 大连理工大学 | A kind of train digital broadcast controller based on HomePlug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 312300 Zhejiang Province, Shaoxing city Shangyu District of Tongjiang City Street West Road No. 398 Patentee after: Shaoxing Shun Chuang Electronic Technology Co., Ltd. Address before: City Street Road 312300 people in Zhejiang Province, Shangyu City, No. 567 Patentee before: Shangyu Shunchuang Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 No.398, Tongjiang West Road, Cao'e street, Shangyu District, Shaoxing City, Zhejiang Province Patentee after: Shaoxing shunchuang Electronic Technology Co.,Ltd. Address before: 312300 No.398, Tongjiang West Road, Cao'e street, Shangyu District, Shaoxing City, Zhejiang Province Patentee before: SHUN CHUANG TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |