CN106209509A - A kind of MVB monitor - Google Patents
A kind of MVB monitor Download PDFInfo
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- CN106209509A CN106209509A CN201610526198.6A CN201610526198A CN106209509A CN 106209509 A CN106209509 A CN 106209509A CN 201610526198 A CN201610526198 A CN 201610526198A CN 106209509 A CN106209509 A CN 106209509A
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- 108091000080 Phosphotransferase Proteins 0.000 claims abstract description 6
- 102000020233 phosphotransferase Human genes 0.000 claims abstract description 6
- 102000001253 Protein Kinase Human genes 0.000 claims abstract description 5
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- 230000003993 interaction Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40293—Bus for use in transportation systems the transportation system being a train
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
The invention discloses a kind of MVB monitor, including signal quality acquisition module, signal transmitting and receiving module, protocol-analysis model, data memory module, USB transmission module and network transmission module；Signal quality acquisition module includes the first transformator, Signal-regulated kinase, ADC acquisition module, the first numeral isolation module, and wherein the first transformator connects DB9 interface, the magnitude of voltage of its waveform on data acquisition bus；First transformator is connected with ADC acquisition module by Signal-regulated kinase, Signal-regulated kinase be used for transmitting the first transformator ± 5V by differential attenuation amplifier decay to ± 2V after be delivered to ADC acquisition module；ADC acquisition module connects the first numeral isolation module, and the first numeral isolation module is for the voltage of peripheral circuit.The present invention can also be compatible and automatically identify ESD, ESD+ and EMD bus media, the most actively sends any data to MVB, does not disturb MVB data to transmit.
Description
Technical field
The present invention relates to detect equipment technical field, particularly relate to a kind of MVB monitor.
Background technology
MVB (MVB) is the various electronic equipment communication issues in order to solve on train and the one that occurs
Technology, the data interaction of the internal vehicle-mounted programmable electronic equipment of railway car is all to be communicated by MVB.If one
If joint train is compared to a people, MVB is exactly people's nervus centralis, and all of action and instruction are all total by MVB
Line is transmitted.
The two-tier network topological structure that TCN uses, upper strata is WTB network structure, and lower floor is MVB network knot
Structure, from the point of view of the analysis of two-tier network topological structure, for the debugging of mobile unit place network, fault detect etc. application,
Normally only towards MVB.So developing MVB monitor, gather and analyze MVB data, for communication data
Analyze and bus failure diagnoses important in inhibiting.
Owing in MVB, the MVB equipment of carry is the most, the function of every kind of equipment is the most not quite alike, with master controller
Mutual data content is the most different, and MVB data frequency is high, and real-time property requires the highest, uses usual way
With means, each equipment is carried out overall debugging and malfunction elimination, can be highly difficult, it is therefore desirable to by professional equipment to bus data
Catching and analyze, existing market lacks such professional equipment, and MVB monitor can effectively solve the problem that such problem.
Relative to research and the application of external TCN, the development of domestic TCN also faces following problem:
1) core technology of MVB is still by external several company monopolizings.
2) due to offshore company's monopolization to MVB key technology, seriously hinder domestic independent research MVB communication network and produce
Product, and the cycle length that complete machine is introduced and price are difficult to bear.
3) what domestic standard, the understanding digestion of technology and secondary development to introducing all was done is inadequate, and this is unfavorable for that MVB communicates
Promoting the use of of network technology motor train unit train at home or other field, is also unfavorable for extracting experience from simultaneously and develops oneself
Train network product and the train network standard of formulation oneself.
4) the domestic research to TCN is less, is not much technological accumulation, and this type of technology requires high, input
Greatly, cause the research of domestic train communication network progressive slowly.
5) the aspect difficulties such as the post-service of product, aftermarket attachment, upgrading.The life cycle phase of Iron-surfur clusters
To longer, without entirely autonomous grasp, at the post-service of product, the aspect such as aftermarket attachment, upgrading will necessarily carry
Carry out difficulty greatly.
6) belonged to, by train network, the product that level of security is the highest, be related to personnel's assets security.And China is to state
After outer train network is introduced, it is contemplated that the problems such as train operating safety, the supporting dynamics that the MVB developing domestic relevant enterprise produces
Not, it is possible to provide the chance of on-line operation of getting on the bus is few, this seriously constrains the development of domestic MVB Related product and application.
Along with the development of science and technology, the technology of China's TCN also can progressively be drawn close with advanced foreign technology.
Believing in the near future, our country has the MVB equipment of independent intellectual property right and TCN network will move towards international city
, obtain the accreditation of international railway user.
To this end, it is proposed that a kind of MVB monitor.
Summary of the invention
The invention aims to solve shortcoming present in prior art, and a kind of MVB monitor proposed.
To achieve these goals, present invention employs following technical scheme:
A kind of MVB monitor, including signal quality acquisition module, signal transmitting and receiving module, protocol-analysis model, data
Memory module, USB transmission module and network transmission module；
Signal quality acquisition module includes the first transformator, Signal-regulated kinase, ADC acquisition module, the first numeral isolation
Module, wherein the first transformator connects DB9 interface, the magnitude of voltage of its waveform on data acquisition bus；First transformator passes through
Signal-regulated kinase is connected with ADC acquisition module, Signal-regulated kinase for by the first transformator transmission ± 5V passes through difference
Decay amplifier decay to ± 2V after be delivered to ADC acquisition module；ADC acquisition module connects the first numeral isolation module, the first number
Word isolation module is for the voltage of peripheral circuit；
Signal transmitting and receiving module includes the second transformator, MVB transceiver, the second numeral isolation module, wherein the second transformator
Connecting DB9 interface, when bus works in EMD pattern, the second transformator is used for isolating MVB signal；Second transformator passes through MVB
Transceiver and the second numeral isolation module connect, and wherein MVB transceiver is for the mutual conversion of differential signal with single-ended signal, the
Two numeral isolation modules are for the voltage of peripheral circuit；
Protocol-analysis model includes a fpga chip, fpga chip respectively with first numeral isolation module, the second numeral every
Connect from module, and fpga chip is connected with data memory module；
USB transmission module includes USB-PHY module and USB interface, and USB interface is connected by USB-PHY and fpga chip；
Network transmission module includes network interface-PHY module and network interface, and network interface passes through network interface-PHY module and FPGA
Chip connects.
Preferably, USB-PHY module uses and uses between CYUSB3014 chip, and USB-PHY module and USB interface
GPIF interface and the UART interface of 32 parallel-by-bit transmission realize the mutual of data.
Preferably, the TYPE-B interface that USB interface can use signal to be USB3.0 is connected with external USB cable.
Preferably, network interface-PHY module is W5300 chip, uses 16 parallel-by-bits to pass between W5300 chip and network interface
Defeated mode realizes data interaction.
Preferably, network interface uses signal to be that RJ45 interface is connected with external network cable.
Preferably, data memory module is DDR2 (1) bin and DDR2 (2) bin, DDR2 (1) bin and DDR2
(2) bin is connected with fpga chip respectively.
The data gathered are transferred to upper by USB or Ethernet by a kind of MVB monitor that the present invention proposes
Machine；Realize the transmission data in bus, carry out inquiring about for storage data, add up, the associative operation such as diagnosis, analyze MVB
Duty.This product can also be compatible and automatically identify ESD, ESD+ and EMD bus media, the most actively sends out to MVB
Send any data, do not disturb MVB data to transmit.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of MVB monitor that the present invention proposes.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.
With reference to Fig. 1, a kind of MVB monitor, including signal quality acquisition module, signal transmitting and receiving module, protocal analysis
Module, data memory module, USB transmission module and network transmission module.
Signal quality acquisition module includes the first transformator, Signal-regulated kinase, ADC acquisition module, the first numeral isolation
Module, wherein the first transformator connects DB9 interface, the magnitude of voltage of its waveform on data acquisition bus；First transformator passes through
Signal-regulated kinase is connected with ADC acquisition module, Signal-regulated kinase for by the first transformator transmission ± 5V passes through difference
Decay amplifier decay to ± 2V after be delivered to ADC acquisition module；ADC acquisition module connects the first numeral isolation module, the first number
Word isolation module is for the voltage of peripheral circuit.
Signal transmitting and receiving module includes the second transformator, MVB transceiver, the second numeral isolation module, wherein the second transformator
Connecting DB9 interface, when bus works in EMD pattern, the second transformator is used for isolating MVB signal；Second transformator passes through MVB
Transceiver and the second numeral isolation module connect, and wherein MVB transceiver is for the mutual conversion of differential signal with single-ended signal, the
Two numeral isolation modules are for the voltage of peripheral circuit.
Protocol-analysis model includes a fpga chip, fpga chip respectively with first numeral isolation module, the second numeral every
Connect from module, and fpga chip be connected with data memory module, wherein, data memory module be DDR2 (1) bin with
DDR2 (2) bin, DDR2 (1) bin and DDR2 (2) bin are connected with fpga chip respectively.
The main task of fpga chip is captured in real time the data resolving in bus, and in bus, the signal of transmission is 485
Differential signal, coded system is Manchester's code.And bus data is with frame as ultimate unit, Frame uses Manchester
Coded system, frame head, postamble then use specific coding mode, therefore the main task of decoder has been preamble detecting, frame data
Identification, CRC check and the extraction of final frame data.
Its work process is: initial detection circuit monitors bus situation, once detecting and having start of frame bits in bus, the most logical
Knowing 8 frequency dividing circuits, produce sampling pulse and receive clock, sample circuit reads serial data from bus, and sends the data to school
Electrical verification road and reception control module.Receive control module and judge data frame type, take out application data, be stored in relief area.Receive
Control module, after receiving a complete frame, detects bus state, once bus free, begins preparing for the reception of next frame.
Decoder realize it is crucial that the identification of valid data frame.Control the number that decoder is mainly received by analysis part
According to processing, frame data detected, if prime frame, then start to take turns new process, according to the data receiving prime frame
Position, it is judged that its function code F_code, then arrange different in width receives length from frame.If received from frame response timeout,
Then add timeout flag.If received, data length is imperfect or CRC check failed, is stored in equally after adding error flag
Memory space.After receiving a complete message, need data content, data length, principal and subordinate's flag of frame, the time of reception frame
Stamp, reception frame number, frame address, wrong status information etc. reconfigure preservation in memory according to custom protocol, wait
Upper computer software reads and is analyzed and shows.
USB transmission module includes USB-PHY module and USB interface, and USB interface is connected by USB-PHY and fpga chip,
USB-PHY module uses and uses 32 parallel-by-bit transmission between CYUSB3014 chip, and USB-PHY module and USB interface
GPIF interface and UART interface realize the mutual of data；The TYPE-B interface that USB interface can use signal to be USB3.0 is with outside
USB cable connects.
Network transmission module includes network interface-PHY module and network interface, and network interface passes through network interface-PHY module and FPGA
Chip connects；Network interface-PHY module is W5300 chip, uses 16 parallel-by-bit transmission means between W5300 chip and network interface
Realizing data interaction, network interface uses signal to be that RJ45 interface is connected with external network cable.
The data gathered can be transferred to host computer by USB or Ethernet by the present invention；Realize the transmission number in bus
According to, carry out inquiring about for storage data, add up, the associative operation such as diagnosis, analyze the duty of MVB.This product can also
Enough compatibilities also identify ESD, ESD+ and EMD bus media automatically, the most actively send any data to MVB, do not disturb MVB total
Line data are transmitted.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (6)
1. a MVB monitor, it is characterised in that include signal quality acquisition module, signal transmitting and receiving module, protocal analysis
Module, data memory module, USB transmission module and network transmission module；
Signal quality acquisition module includes the first transformator, Signal-regulated kinase, ADC acquisition module, the first numeral isolation module,
Wherein the first transformator connects DB9 interface, the magnitude of voltage of its waveform on data acquisition bus；First transformator is adjusted by signal
Reason module is connected with ADC acquisition module, Signal-regulated kinase be used for transmitting the first transformator ± 5V transported by differential attenuation
Put decay to ± 2V after be delivered to ADC acquisition module；ADC acquisition module connects the first numeral isolation module, the first numeral isolation
Module is for the voltage of peripheral circuit；
Signal transmitting and receiving module includes the second transformator, MVB transceiver, the second numeral isolation module, and wherein the second transformator connects
DB9 interface, when bus works in EMD pattern, the second transformator is used for isolating MVB signal；Second transformator is received and dispatched by MVB
Device and the second numeral isolation module connect, and wherein MVB transceiver is for the mutual conversion of differential signal with single-ended signal, the second number
Word isolation module is for the voltage of peripheral circuit；
Protocol-analysis model includes a fpga chip, fpga chip respectively with first numeral isolation module, second numeral isolation mode
Block connects, and fpga chip is connected with data memory module；
USB transmission module includes USB-PHY module and USB interface, and USB interface is connected by USB-PHY and fpga chip；
Network transmission module includes network interface-PHY module and network interface, and network interface passes through network interface-PHY module and fpga chip
Connect.
A kind of MVB monitor the most according to claim 1, it is characterised in that USB-PHY module uses
The GPIF interface and the UART that use 32 parallel-by-bit transmission between CYUSB3014 chip, and USB-PHY module and USB interface connect
Cause for gossip shows the mutual of data.
A kind of MVB monitor the most according to claim 1, it is characterised in that USB interface can use the signal to be
The TYPE-B interface of USB3.0 is connected with external USB cable.
A kind of MVB monitor the most according to claim 1, it is characterised in that network interface-PHY module is W5300 core
Sheet, uses 16 parallel-by-bit transmission means to realize data interaction between W5300 chip and network interface.
MVB monitor the most according to claim 1, it is characterised in that network interface uses signal to be RJ45 interface
It is connected with external network cable.
MVB monitor the most according to claim 1, it is characterised in that data memory module is DDR2 (1) bin
It is connected with fpga chip respectively with DDR2 (2) bin, DDR2 (1) bin and DDR2 (2) bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610526198.6A CN106209509B (en) | 2016-07-05 | 2016-07-05 | A kind of MVB bus monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610526198.6A CN106209509B (en) | 2016-07-05 | 2016-07-05 | A kind of MVB bus monitor |
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| Publication Number | Publication Date |
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| CN106209509A true CN106209509A (en) | 2016-12-07 |
| CN106209509B CN106209509B (en) | 2019-04-09 |
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| CN201610526198.6A Active CN106209509B (en) | 2016-07-05 | 2016-07-05 | A kind of MVB bus monitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351173A (en) * | 2019-06-24 | 2019-10-18 | 上海申珩电子科技有限公司 | Multifunctional train bus detection device and method |
| CN110365342A (en) * | 2019-06-06 | 2019-10-22 | 中车青岛四方机车车辆股份有限公司 | Waveform decoder method and device |
| CN110830345A (en) * | 2019-10-25 | 2020-02-21 | 中国铁道科学研究院集团有限公司 | MVB protocol analysis device and method |
| CN113050461A (en) * | 2019-12-26 | 2021-06-29 | 中车大连电力牵引研发中心有限公司 | MVB chip |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365342A (en) * | 2019-06-06 | 2019-10-22 | 中车青岛四方机车车辆股份有限公司 | Waveform decoder method and device |
| CN110365342B (en) * | 2019-06-06 | 2023-05-12 | 中车青岛四方机车车辆股份有限公司 | Waveform decoding method and device |
| CN110351173A (en) * | 2019-06-24 | 2019-10-18 | 上海申珩电子科技有限公司 | Multifunctional train bus detection device and method |
| CN110830345A (en) * | 2019-10-25 | 2020-02-21 | 中国铁道科学研究院集团有限公司 | MVB protocol analysis device and method |
| CN113050461A (en) * | 2019-12-26 | 2021-06-29 | 中车大连电力牵引研发中心有限公司 | MVB chip |
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