CN103558813B - For recording recording method and the pen recorder of MVB networked physics layer Frame - Google Patents
For recording recording method and the pen recorder of MVB networked physics layer Frame Download PDFInfo
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Abstract
The present invention relates to the network control unit of the rolling stock based on MVB network technology, the recording method for recording MVB networked physics layer Frame being specifically related to a kind of recording method for recording MVB networked physics layer Frame and realizing according to this pen recorder.This pen recorder comprises MVB network controller board and industrial control computer mainboard; Described MVB network controller board comprises physical firmware and controls the local firmware that physical firmware completes the Frame collection of MVB networked physics layer and memory function; Described industrial control computer mainboard is connected with described MVB network controller board by industrial-controlled general line, for extracting by described local firmware and recording the MVB networked physics layer Frame of described physical firmware collection and storage.The Frame with physical layer transmission on store M VB network can be recorded by the present invention, thus the Data support of bottom more can be provided for analyzing train operation and failure condition.
Description
Technical field
The present invention relates to based on MVB(MultifunctionVehicleBus, MVB) network control unit of rolling stock of network technology, the recording method for recording MVB networked physics layer Frame being specifically related to a kind of recording method for recording MVB networked physics layer Frame and realizing according to this pen recorder.
Background technology
MVB network is a kind of communication bus network for rolling stock, be widely used at present on the rolling stock of high-speed railway and Urban Underground railway, railway traffic at home and abroad, possess high reliability and dirigibility, it is an important component part of IEC61375-3 standard, but due to strongly professional, its external interface is not also facilitate especially.
Data recording equipment is a data storage device of being used widely gradually on rolling stock at present, can registration of vehicle run in the data of MVB transmission over networks, generally be placed in the cab of rolling stock, be convenient to maintainer and data downloaded and analyzes.Maintainer can obtain the file of the MVB network data of record from data recording equipment, then just carries out analysis and the judgement of Vehicular behavior by means of relevant analysis software.
Domestic existing MVB data recording equipment operates mainly on the link layer of MVB network, therefore only can be recorded in the process data of transmission over networks, message data and monitoring data; And based on these data, the data on locomotive network and event are recorded and analyzed.But the data of MVB transmission over networks are not limited to above kind.Frame that Physical layer is transmitted (prime frame and from frame) is exactly the good object analyzed network state; Particularly for the MVB network card equipment of independent research, a kind of equipment that can record Frame in MVB Physical layer, brings very large benefit by for the research and development of MVB network card equipment, test, debugging and analysis.Therefore, provide a kind of can record MVB networked physics layer Frame pen recorder and recording method very necessary.
Summary of the invention
(1) technical matters that will solve
The object of the present invention is to provide a kind of can record and the pen recorder of the Frame of physical layer transmission on store M VB network and recording method, thus the Data support of bottom more can be provided for analyzing train operation and failure condition.
(2) technical scheme
Technical solution of the present invention is as follows:
For recording a pen recorder for MVB networked physics layer Frame, comprise MVB network controller board and industrial control computer mainboard;
Described MVB network controller board comprises physical firmware and controls the local firmware that described physical firmware completes the Frame collection of MVB networked physics layer and memory function;
Described industrial control computer mainboard is connected with described MVB network controller board by industrial-controlled general line, for extracting by described local firmware and recording the MVB networked physics layer Frame of described physical firmware collection and storage.
Preferably, described industrial control computer mainboard is PC104 embedded x86 industrial control computer mainboard, and described industrial-controlled general line is PC104 control bus.
Preferably, described physical firmware for core, also comprises the ARM chip, communication storer, PC104 bus interface, MVB data transmission interface and the flash memory that is connected with described ARM chip that are connected with described FPGA circuit respectively with FPGA circuit.
Preferably, described local firmware comprises MVB receiver, redundant line steering logic, store control logic, internal bus and PC104 bus interface; Described store control logic is connected with redundancy control logic and MVB receiver successively by internal bus on the one hand, is connected on the other hand by described PC104 bus interface with described industrial control computer mainboard; Described MVB receiver comprises the first receiver and the second receiver.
Preferably, the described PC104 embedded x86 industrial control computer mainboard memory cell, PC104 bus interface and the USB interface that comprise x86 central processing unit and be connected with described x86 central processing unit respectively.
Present invention also offers a kind of recording method for recording MVB networked physics layer Frame realized according to any one pen recorder above-mentioned:
For recording a recording method for MVB networked physics layer Frame, comprise step:
The electric signal received is resolved to Frame and is stored in by store control logic in communication storer by S1.MVB bus receiver;
S2. the central processing unit of industrial control computer mainboard by industrial-controlled general line to industrial-controlled general line interface sending controling instruction;
S3. the Frame in communication storer is sent to industrial control computer mainboard according to the steering order control store steering logic received by industrial-controlled general line interface;
S4. the Frame received carries out resolving and is written in the data file be kept on memory cell by industrial control computer mainboard.
Preferably, described steering order comprises and emptying in communication storer for the flush instructions of the fifo queue of store frames of data and the reading command for controlling to read from described fifo queue the Frame that head of the queue stores.
Preferably, described step S1 comprises further:
S11. all Frames that MVB link receives MVB networked physics layer monitored by the first receiver and the second receiver simultaneously;
S12. the data frame information comprehensive descision that receives according to described first receiver and the second receiver of redundant line steering logic the receiver selecting reliability higher are as trust receiver, and by internal bus to store control logic transfer control signal;
S13. described store control logic to complete Frame from the function of trusting receiver and be stored into fifo queue according to the control signal received on the one hand, and the steering order received on the one hand from PC104 bus interface completes Frame reads PC104 bus interface function from fifo queue;
S14. described PC104 bus interface receives the steering order of PC104 embedded x86 industrial control computer mainboard and is sent to described store control logic, the Frame of reading is passed to industrial control computer mainboard simultaneously.
Preferably, described step S4 comprises:
S41. send flush instructions by PC104 bus interface to store control logic, fifo queue is cleared;
S42. detect the residual memory space of memory cell, if residual memory space is lower than the threshold value preset, the data file of writing time early than the preset expiration time is deleted;
S43. on memory cell, create new data file, and record creation-time;
S44. judge that whether write register can write, and as write, continues, otherwise repeat to judge until can write;
S45. send reading command by PC104 bus interface to store control logic, judge that whether read register is readable, if readable, continue, otherwise repeat to judge until readable;
S46. the Frame that PC104 bus interface sends is written in data file;
If S47. current time has pass by time interval of presetting, then to close data file, and jump to step S42, otherwise jump to step S44 apart from the creation-time of data file.
Preferably, described step S4 also comprises,
The connection state of monitoring USB interface, when having monitored USB storage device and having connected, has copied to the data file on memory cell in described USB storage device.
(3) beneficial effect
The embodiment of the present invention provide in the recording method of recording MVB networked physics layer Frame and pen recorder, utilize MVB network controller board as the hardware platform gathering MVB networked physics layer Frame, utilize PC104 embedded x86 industrial control computer mainboard to control reception and storage data.The Frame with physical layer transmission on store M VB network can be recorded by the present invention, thus the Data support of bottom more can be provided for analyzing train operation and failure condition; Meanwhile, connect because the present invention can detect USB storage device automatically and data file is copied to wherein, therefore there is higher convenience and dirigibility.
Accompanying drawing explanation
Fig. 1 is the structural representation of physical firmware in the embodiment of the present invention;
Fig. 2 is the structural representation of local firmware in the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of recording method step S4 in the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described further.Following examples only for illustration of the present invention, but are not used for limiting the scope of the invention.
Provide firstly a kind of pen recorder for recording MVB networked physics layer Frame in the present embodiment, this pen recorder mainly comprises MVB network controller board and industrial control computer mainboard;
MVB network controller board is the hardware platform gathering MVB networked physics layer Frame, comprises physical firmware and local firmware.Such as, physical firmware in the present embodiment mainly comprises FPGA(Field-ProgrammableGateArray, i.e. field programmable gate array) circuit, ARM chip, FlashRom(flash memory), Trafficmemory(communication storer), industrial-controlled general line interface, MVBEMD interface (a kind of MVB data transmission interface) etc.Local firmware is the digital circuits section designed by FPGA, completing the Frame collection of MVB networked physics layer and memory function for controlling physical firmware, mainly comprising MVB receiver, redundant line steering logic, store control logic and PC104 bus interface etc.;
Industrial control computer mainboard is bi-directionally connected by industrial-controlled general line and MVB network controller board, for extracting by local firmware and recording the MVB networked physics layer Frame of physical firmware collection and storage; Such as, in the present embodiment, industrial control computer mainboard can be PC104 embedded x86 industrial control computer mainboard, industrial-controlled general line is PC104 control bus, and PC104 embedded x86 industrial control computer mainboard comprises x86 central processing unit, memory cell, PC104 bus interface and USB2.0 interface etc.
Below the various piece for the pen recorder recording MVB networked physics layer Frame provided in the present embodiment is described in detail.
As shown in fig. 1, the physical firmware of MVB network controller board for core, also comprises the ARM chip, communication storer, PC104 bus interface, MVB data transmission interface and the flash memory that is connected with ARM chip that are connected with FPGA circuit respectively with FPGA circuit.Outside expansion SRAM(StaticRAM, static RAM) as communication memory, ARM chip is responsible for being configured FPGA circuit, and the configuration information of FPGA circuit is stored in the flash memory that is connected with ARM chip; MVB-PC104 plate meets MVBEMD interface requirement at MVB end; MVB-PC104 plate meets the requirement of PC104 bus interface at MVB end; PC104 embedded x86 industrial control computer mainboard is bi-directionally connected by PC104 bus interface and MVB network controller board, and central processing unit and the MVB network controller board of PC104 embedded x86 industrial control computer mainboard adopt UART-emulation communication protocol to communicate on the basis of PC104 bus interface.
As shown in Figure 2, the local firmware of MVB network controller board is the digital circuits section designed by FPGA, comprises MVB receiver, redundant line steering logic, store control logic, internal bus and PC104 bus interface; Store control logic is connected with redundancy control logic and MVB receiver successively by internal bus on the one hand, thus completes the reception memory function of Frame; Be connected with industrial control computer mainboard by PC104 bus interface on the other hand, complete the reading of Frame and the interactive function with PC104 embedded x86 industrial control computer mainboard; MVB receiver comprises the first receiver and the second receiver; Major function of the present invention is completed by these local firmware of FPGA circuit.
Memory cell, PC104 bus interface and USB interface that PC104 in the present embodiment embedded x86 industrial control computer mainboard comprises x86 central processing unit and is connected with x86 central processing unit respectively.Such as, PC104 embedded x86 industrial control computer mainboard can adopt the 104-1645CLDN of Yan Xiang company; Wherein x86 central processing unit adopts plate to carry AMDGeodeLX700CPU, dominant frequency 500MHz; 256MBytesDDRSDRAM is saved as in plate carries; On plate, memory cell 4 adopts the 2GBytesADC(ATADiskChip of apacer company, ATA disk chip) electric board; Integrated 1 VGA(VideoGraphicsArray on plate, Video Graphics Array) display interface, 2 RS232 serial line interfaces, 1 IDE(IntegratedDriveElectronics, ide) interface, 1 Ethernet interface, 1 PS/2 mouse/keyboard interface, 2 USB2.0 interfaces, 1 PC104 bus interface; Carry ttylinux operating system (one small-sized GNU/Linux system).
A kind of recording method for recording MVB networked physics layer Frame realized according to above-mentioned pen recorder is additionally provided in the present embodiment; This recording method mainly comprises the following steps:
The electric signal of MVB transmission over networks is inputed to MVB receiver by MVBEMD interface by S1.MVB network controller board, and the electric signal received is resolved to Frame and is stored in by store control logic in communication storer by MVB receiver;
The central processing unit of S2.PC104 embedded x86 industrial control computer mainboard passes through PC104 control bus to PC104 bus interface sending controling instruction;
The Frame received in communication storer is resolved according to the steering order control store steering logic received by S3.PC104 bus interface, and is sent to PC104 embedded x86 industrial control computer mainboard by PC104 control bus;
S4. the Frame received carries out resolving and is written in the data file be kept on memory cell by industrial control computer mainboard.
Below the part steps for the recording method of recording MVB networked physics layer Frame provided in the present embodiment is described in detail.
Step S1 comprises further:
S11.MVBEMD interface is connected on MVB network, MVB network packet is containing First Line and the second line two data circuits, Manchester level signal that circuit transmits is sent to the first receiver and second receiver of MVB receiver respectively through MVBEMD interface, Manchester signal is decoded as digital signal by the first receiver and the second receiver, composition Frame; Meanwhile, to the data frame information (comprising the information such as valid frame, frame conflict, erroneous frame, interFrameGap) that redundancy control logic transmission receives;
S12. data frame information (comprising the information such as valid frame, frame conflict, erroneous frame, the interFrameGap) comprehensive descision that receives according to the first receiver and the second receiver of redundant line steering logic the receiver selecting reliability higher are as trust receiver (namely judging to trust First Line or the second line), and by internal bus (comprising control bus and data bus) to store control logic transfer control signal (comprising the 5th, the 6th of the following status word of output);
S13. store control logic completes function Frame being stored into fifo queue from trust receiver on the one hand according to the control signal received, receive the steering order from PC104 bus interface on the one hand, and decoding, according to the steering order after decoding, complete Frame reads PC104 bus interface function from fifo queue;
S14.PC104 bus interface receives the steering order of PC104 embedded x86 industrial control computer mainboard and is sent to store control logic, the Frame of reading is passed to PC104 embedded x86 industrial control computer mainboard simultaneously.
Step S2 comprises further:
The central processing unit of PC104 embedded x86 industrial control computer mainboard passes through PC104 control bus to industrial PC 104 bus interface sending controling instruction; Steering order comprises emptying in communication storer and reads from fifo queue the reading command of Frame that head of the queue stores for the flush instructions of the fifo queue of store frames of data and for controlling; Such as:
Flush instructions: a byte data 0x42; After store control logic receives this instruction, empty the fifo queue for store frames of data immediately;
Reading command: a byte data 0x46; After store control logic receives this instruction, read the Frame of head of the queue storage immediately from fifo queue, and prepare it to be transferred to central processing unit by PC104 control bus.
The length being transferred to the data of central processing unit can be 1,3,5,9,17 or 33 byte; These data comprise two parts: status word and Frame.The value of status word is as shown in table 1:
The value explanation of table 1 status word
Such as, if fifo queue is empty, namely do not have Frame can for reading, then status word everybody be all 0, and the length of Frame is thereafter 0.
Step S4 is completed by the computer program operated on (SuSE) Linux OS of PC104 embedded x86 industrial control computer mainboard.
As shown in Figure 3, step S4 comprises further:
S41., after computer starting, operating system carries out initialization and automatic service data logging program; Program sends flush instructions by PC104 bus interface to store control logic, makes fifo queue be cleared to prepare receiving network data;
S42. detect the residual memory space of memory cell, if residual memory space is lower than the threshold value preset, the data file of writing time early than the preset expiration time is deleted to increase storage space;
S43. on memory cell, create new data file, and record creation-time;
S44. read the value of LSR register, judge that whether write register can write, and as write, continues, otherwise repeat to judge until can write;
S45. send reading command by PC104 bus interface to store control logic, judge that whether read register is readable, if readable, continue, otherwise repeat to judge until readable;
S46. the Frame that PC104 bus interface sends is written in data file; I.e. first reading state word, according to the length of status word determination Frame, and is written in data file by status word; Byte-by-byte read data frame content afterwards, and be written in data file;
If S47. current time has pass by time interval of presetting, then to close data file, and jump to step S42, otherwise jump to step S44 apart from the creation-time of data file.
Further, while carrying out step S4, being detected the connection state of USB2.0 interface by the device file list under scan operation system/dev file, when having detected that USB storage device connects, the data file on memory cell being copied in USB storage device.
In sum, the Frame with physical layer transmission on store M VB network can be recorded by the present invention, thus the Data support of bottom more can be provided for analyzing train operation and failure condition; Meanwhile, connect because the present invention can detect USB storage device automatically and data file is copied to wherein, therefore there is higher convenience and dirigibility.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, therefore all equivalent technical schemes also belong to protection category of the present invention.
Claims (9)
1. for recording a pen recorder for MVB networked physics layer Frame, it is characterized in that, comprising MVB network controller board and industrial control computer mainboard;
Described MVB network controller board comprises physical firmware and controls the local firmware that described physical firmware completes the Frame collection of MVB networked physics layer and memory function;
Described industrial control computer mainboard is connected with described MVB network controller board by industrial-controlled general line, for extracting by described local firmware and recording the MVB networked physics layer Frame of described physical firmware collection and storage;
Described local firmware comprises MVB receiver, redundant line steering logic, store control logic, internal bus and a PC104 bus interface; Described store control logic is connected with redundant line steering logic and MVB receiver successively by internal bus on the one hand, is connected on the other hand by a described PC104 bus interface with described industrial control computer mainboard; Described MVB receiver comprises the first receiver and the second receiver.
2. pen recorder according to claim 1, is characterized in that, described industrial control computer mainboard is PC104 embedded x86 industrial control computer mainboard, and described industrial-controlled general line is PC104 control bus.
3. pen recorder according to claim 2, it is characterized in that, described physical firmware for core, also comprises the ARM chip, communication storer, the 2nd PC104 bus interface, MVB data transmission interface and the flash memory that is connected with described ARM chip that are connected with described FPGA circuit respectively with FPGA circuit.
4. the pen recorder according to claim 2-3 any one, it is characterized in that, memory cell, the 3rd PC104 bus interface and USB interface that described PC104 embedded x86 industrial control computer mainboard comprises x86 central processing unit and is connected with described x86 central processing unit respectively.
5. the recording method for recording MVB networked physics layer Frame of the pen recorder realization of basis as described in claim 1-4 any one, is characterized in that, comprise step:
The electric signal received is resolved to Frame and is stored in by store control logic in communication storer by S1.MVB bus receiver;
S2. the central processing unit of industrial control computer mainboard by industrial-controlled general line to industrial-controlled general line interface sending controling instruction;
S3. the Frame in communication storer is sent to industrial control computer mainboard according to the steering order control store steering logic received by industrial-controlled general line interface;
S4. the Frame received carries out resolving and is written in the data file be kept on memory cell by industrial control computer mainboard.
6. recording method according to claim 5, it is characterized in that, described steering order comprises and emptying in communication storer for the flush instructions of the fifo queue of store frames of data and the reading command for controlling to read from described fifo queue the Frame that head of the queue stores.
7. recording method according to claim 6, is characterized in that, described step S1 comprises further:
S11. all Frames that MVB link receives MVB networked physics layer monitored by the first receiver and the second receiver simultaneously;
S12. the data frame information comprehensive descision that receives according to described first receiver and the second receiver of redundant line steering logic the receiver selecting reliability higher are as trust receiver, and by internal bus to store control logic transfer control signal;
S13. described store control logic to complete Frame from the function of trusting receiver and be stored into fifo queue according to the control signal received on the one hand, and the steering order received on the one hand from a PC104 bus interface completes Frame reads PC104 bus interface function from fifo queue;
S14. a described PC104 bus interface receives the steering order of PC104 embedded x86 industrial control computer mainboard and is sent to described store control logic, the Frame of reading is passed to industrial control computer mainboard simultaneously.
8. recording method according to claim 7, is characterized in that, described step S4 comprises:
S41. send flush instructions by the 3rd PC104 bus interface to store control logic, fifo queue is cleared;
S42. detect the residual memory space of memory cell, if residual memory space is lower than the threshold value preset, the data file of writing time early than the preset expiration time is deleted;
S43. on memory cell, create new data file, and record creation-time;
S44. judge that whether write register can write, and as write, continues, otherwise repeat to judge until can write;
S45. send reading command by the 3rd PC104 bus interface to store control logic, judge that whether read register is readable, if readable, continue, otherwise repeat to judge until readable;
S46. the Frame that the 3rd PC104 bus interface sends is written in data file;
If S47. current time has pass by time interval of presetting, then to close data file, and jump to step S42, otherwise jump to step S44 apart from the creation-time of data file.
9. recording method according to claim 8, is characterized in that, described step S4 also comprises:
The connection state of monitoring USB interface, when having monitored USB storage device and having connected, has copied to the data file on memory cell in described USB storage device.
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| CN107230263B (en) * | 2017-05-31 | 2019-12-06 | 中车信息技术有限公司 | WTB bus data frame recorder and recording method |
| CN107885134A (en) * | 2017-12-25 | 2018-04-06 | 成都实时技术股份有限公司 | A kind of fault data recorder method and device based on Aerial Electronic Equipment |
| CN108599989B (en) * | 2018-03-20 | 2021-09-10 | 中车青岛四方机车车辆股份有限公司 | MVB bus detection method and device |
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| KR20050060978A (en) * | 2003-12-17 | 2005-06-22 | 한국철도기술연구원 | Signal measurement system for using multifunction vehicle bus |
| CN2845324Y (en) * | 2005-04-27 | 2006-12-06 | 谢步明 | MVB equipment network interface card based on FPGA |
| CN2819315Y (en) * | 2005-05-20 | 2006-09-20 | 谢步明 | MVB four-kind apparatus based on ARM7 kernel microprocessor |
| KR100837154B1 (en) * | 2006-11-01 | 2008-06-11 | 현대로템 주식회사 | Communication network apparatus for using in railway vehicle |
| CN201146536Y (en) * | 2007-11-06 | 2008-11-05 | 中国北车股份有限公司 | MVB-WORLDFIP gateway based on ARM7CPU nucleus |
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Address after: 100084 Haidian District Tsinghua Yuan Beijing No. 1 Co-patentee after: CRRC INFOTECH CO., LTD. Patentee after: Tsinghua University Address before: 100084 Beijing Haidian District Tsinghua Yuan 100084-82 mailbox Co-patentee before: T H Soft Information Technology Co., Ltd. Patentee before: Tsinghua University |