CN104572534A - Locomotive information monitoring equipment and operating method thereof - Google Patents
Locomotive information monitoring equipment and operating method thereof Download PDFInfo
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- CN104572534A CN104572534A CN201410735100.9A CN201410735100A CN104572534A CN 104572534 A CN104572534 A CN 104572534A CN 201410735100 A CN201410735100 A CN 201410735100A CN 104572534 A CN104572534 A CN 104572534A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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Abstract
The invention provides locomotive information monitoring equipment and an operating method thereof and belongs to the technical field of locomotive information monitoring. The locomotive information monitoring equipment comprises a case, a back board, a plurality of functional board cards and one or more external interface boards, wherein the back board is fixedly arranged in the case; the functional board cards are inserted into a front panel of the case and are in inserted connection with one side of the back board; each external interface board is inserted into a rear panel of the case and is in inserted connection with the other side of the back board; the back board comprises a plurality of slots in inserted connection with the functional board cards; each functional board card comprises a data exchange board, a first main control board, a standby main control board, a power board and one or more storage boards; the one or more external interface boards provide a plurality of input/output interfaces in the rear panel of the case; several external interface boards comprise a power input interface, a digital signal input/output interface and an analog signal input/output interface.
Description
Technical field
The present invention relates to locomotive information monitoring field, be specifically related to a kind of locomotive information watch-dog and operation method thereof.
Background technology
Along with developing rapidly of railway construction, also more and more higher to the safety requirements of transportation by railroad, from safe driving requirement and actual conditions, install various monitoring, diagnosing mobile unit additional, as EEF bogie monitoring, diagnosing equipment, top insulation detection equipment, various video monitoring equipment, fireproof monitoring equipment etc.These equipment have played vital role in guarantee motorcycle safety operation, but also face series of problems simultaneously and need to solve.The system that these equipment are all respective independent, function singlenesses, dispersion is installed, compatible and poor expandability, brings a lot of inconvenience to operation and maintenance.And, develop new system, the system development of each specific function in the future, all need to carry out overlapping development to data communication, system power supply, data-interface, bus protocol etc.In engine video frequency monitoring, to the polymorphism of data image, and the distribution processor of video, reach and adapt to different user to the requirement of different video image, can not well be met.To the storage of data, process in real time, the stable operation of Energy control and equipment can not reach very high request.
Summary of the invention
In order to solve problems of the prior art, the present invention proposes a kind of locomotive information watch-dog and operation method thereof, is merged by dispersant system, and reserved expanded function slot, adopts the multibus technology meeting multiple needs, possess redundancy handoff functionality.
According to an aspect of the present invention, a kind of locomotive information watch-dog is proposed.Described locomotive information watch-dog comprises: cabinet; Fixing backboard in the chassis; From case front panel insert and with multiple functional cards of backboard side grafting; From cabinet rear panel insert and with one or more external interface plates of backboard opposite side grafting; Wherein: described backboard comprises multiple slots of multiple functional cards described in grafting; Described multiple functional cards comprises exchanges data plate, the first master control borad, slave control board, power panel and one or more memory board; Described one or more external interface plate provides multiple IO interface at cabinet rear panel, comprises power input interface, digital signal input/output interface and simulating signal IO interface.
According to an aspect of the present invention, described backboard has the first plug connector and the second plug connector that are positioned at side, and is positioned at the 3rd plug connector of opposite side, and wherein the second plug connector and the 3rd plug connector couple; Described functional cards has and the 4th plug connector of described first plug connector grafting and the 5th plug connector with described second plug connector grafting; Described external interface plate has the 6th plug connector with described 3rd plug connector grafting.
According to an aspect of the present invention, described backboard is the PCI-E backboard of 3U 14 groove, there are two and exchange slot, be respectively PCI-E and exchange slot and network exchange slot, each exchange slot have two pairs of high-speed-differential lines pair and each slot interconnected, the data transmission channel of PCI-Ex1 or gigabit Ethernet is provided, passes through a pair high-speed-differential between each slot to interconnected between two.
According to an aspect of the present invention, described backboard also has RS485, CAN and/or I2C bus.
According to an aspect of the present invention, described exchanges data plate comprises PCI-E exchanges data plate and network exchange plate; Described PCI-E exchanges data plate has master chip, and described master chip is 8619 exchange chips of PLX.
According to an aspect of the present invention, described first master control borad and slave control board all have control chip and codec chip, and all there is video input interface, core bus interface, display interface, input through keyboard interface, power input interface, network interface and outside input and output warning input interface.
According to an aspect of the present invention, described one or more memory board comprises one or more solid state hard disc respectively.
According to an aspect of the present invention, described power panel comprises main power board and standby electricity source plate.
Also proposed a kind of operation method of locomotive information watch-dog as described above, it is characterized in that:
Step one, after described locomotive information watch-dog powers on, the master chip of described exchanges data plate detects the functional cards of each slot grafting of backboard;
Step 2, when finding to there is functional cards, inquires about the configuration information of described functional cards;
Step 3 when described configuration information indicates described functional cards network enabled, is then described functional cards distributing IP address;
Step 4, controls the electric sequence of each functional cards until each functional cards stable operation.
According to an aspect of the present invention, after step 4, perform step 5, described master chip sends to all functions board the configuration information of each functional cards by the mode of broadcast, and each functional cards determines whether set up communication according to this configuration information.
According to an aspect of the present invention, described operation method also comprises the new Booting sequence inserting functional cards, and described Booting sequence comprises:
When there being New function board to insert the functional cards slot of backboard, send look-at-me to described exchanges data plate;
Described exchanges data buttress starts power-up routine according to look-at-me makes described New function board power on;
After New function board powers on and stablizes, the configuration information of exchanges data plate inquiry New function board;
New function board reports slot number and configuration information to power board;
Implicit IP address is distributed to the New function board of band network function;
Exchanges data plate is broadcasted all information of New function board to other functional cards existing except New function board;
Other functional cards are according to the local configuration information table of the information updating received, and foundation communicates with New function board.
According to an aspect of the present invention, described operation method also comprises the switching flow of the first master control borad and slave control board, and described switching flow comprises:
The control of bus is given the port at the first master control borad place by exchanges data plate;
Slave control board monitors the duty of the first master control borad;
When the duty of the first master control borad shows fault, slave control board notifies described exchanges data plate;
The control of bus is switched to the port at slave control board place by described exchanges data plate from the port at the first mainboard place.
According to an aspect of the present invention, described operation method also comprises the Booting sequence of master control borad, comprising:
After master control borad powers on, the parameter configuration that first reading system is default, then initialization codec chip, carry stores the storer on board, last start up system monitoring thread, storage thread, encoding and decoding thread and input and output thread.
According to an aspect of the present invention, described operation method also comprises the monitoring flow process of master control borad for each functional cards, comprising:
Read the parameter configuration of each functional cards, obtain the I2C address of each functional cards;
By I2C address, each functional cards is inquired about;
Select one piece of functional cards to inquire about, if Query Result represents this functional cards normal operation, then select next block functional cards to continue inquiry; Otherwise check error code, reset this functional cards, and next block functional cards is selected to continue inquiry; Perform this step until all functions plate all completes inspection.
According to an aspect of the present invention, described operation method also comprises the monitoring flow process of master control borad for storage thread, encoding and decoding thread, input and output thread, comprising:
Read the state of storage thread, encoding and decoding thread, input and output thread;
Judge whether that thread is made mistakes, if do not made mistakes, then started to check next time; Otherwise, check error code, reset master control borad, start to check next time.
According to an aspect of the present invention, described operation method also comprises the encoding and decoding flow process of master control borad, comprising:
The parameter configuration that reading system is preset;
Described parameter configuration is utilized to carry out initialization to codec chip;
Create coding thread with decoding thread with executed in parallel coding flow process and decoded stream journey;
Wherein, coding flow performing following steps:
Read a frame video compression data from codec chip, send to storage thread to be stored in memory board by packed data, read next frame video compression data, repeat this step until complete video compress and the storage of all frames;
Wherein, decoding thread execution following steps:
Receiver, video playback signal;
Judge whether replay request, if do not had, continued to perform previous step, otherwise, perform next step;
According to playback duration parameter call memory interface;
Read frame of video from memory board and send to codec chip;
Decoding and output video frame with display;
Judge whether playback terminates, if do not had, read next frame and perform decoding until playback terminates; Otherwise return receiver, video playback signal step to continue to perform.
According to an aspect of the present invention, described operation method also comprises the treatment scheme of vision signal, comprising:
Vision signal is input to the rear panel of locomotive information watch-dog;
Signal is transported to external interface plate by the plug connector on rear panel;
Through the plug connector of external interface plate and backboard and backboard and functional cards, signal is fed to master control borad to process vision signal, and the data after process are issued memory board and carried out storing or being sent to network by described master control borad.
The locomotive information watch-dog that the present invention proposes adopts the plug-in card design of syllogic board structure, and multiple bus fusion technology, effectively solves each side problems such as system communication transmission, Function Extension and system smooth upgrade, and greatly saved secondary development cost.
Accompanying drawing explanation
Fig. 1 shows the building-block of logic of locomotive information watch-dog proposed by the invention;
Fig. 2 illustrates the plug-in card schematic diagram of the syllogic board structure that this equipment uses;
Fig. 3 and Fig. 4 respectively illustrates front view and the rear view of locomotive information watch-dog complete machine;
Fig. 5 shows the IO interface of master control borad and the annexation with other equipment or board;
Fig. 6 shows the startup workflow of master control borad;
Fig. 7 shows the monitoring flow process of master control borad;
Fig. 8 shows the encoding and decoding flow process of master control borad;
Fig. 9 shows the new Booting sequence inserting functional cards;
Figure 10 shows the whole treatment scheme of vision signal.
Embodiment
For mentality of designing of the present invention is clearly described, quote following specific embodiment, but it is only exemplary illustration, protection scope of the present invention is not restricted.
Fig. 1 shows the building-block of logic of locomotive information watch-dog proposed by the invention.
Equipment adopts modular design method, and each functional module is relatively independent, can accomplish hot plug.Be made up of a few parts such as backboard, exchanges data plate, master control borad, memory board, signal acquiring board, wireless transmission plate, power panel and external interface plates.As shown in Figure 1, in backboard side, be plugged with memory board 1,2, wireless transmission plate, signal acquiring board, master control borad 1,2, PCI-E power board, network exchange plate, one or more expansion board and power panel 1,2, backboard provides data exchange channels at a high speed for these planks, can support the bus protocol such as I2C, RS485, CAN, PCI-E.By multibus mode, for system provides the data channel of different rates, improve the dirigibility of whole system.At backboard opposite side, be plugged with one or more external interface plate, mutual for what realize with external signal, comprise the input and output of analog video signal and the input and output of external digital signal.The various boards of backboard both sides can need to adjust according to various function, greatly can strengthen the dirigibility of system like this.
Fig. 2 illustrates the plug-in card schematic diagram of the syllogic board structure that this equipment uses.
Wherein, being positioned at middle element is backboard 202, and on the left of backboard is functional cards 201, such as master control borad etc., and right side is input/output board 203, i.e. external interface plate.Functional cards completes concrete function, and backboard provides bus data passage and the IO channel with the external world, and input/output board guides backboard data into from outside, and then is supplied to functional cards, and the data of functional cards is exported.
The J1 plug connector of functional cards is connected with the P1 plug connector of backboard, provides the Systematical control passages such as PCI-E data channel and I2C, makes functional cards connect other functional cards by agreements such as PCI-E.The J2 plug connector of functional cards and the P2 plug connector grafting of backboard, the rP2 plug connector of backboard and the rJ2 plug connector grafting of input/output board, thus the coupling of the rJ2 plug connector of the J2 plug connector of practical function board and input and output board.The pin of input and output board provides User Defined IO function, and the outside digital signal such as analog video input, RS485 input can pass through these self-defined I/O interfaces, inputs to correlation function board.Functional cards such as can provide 4 RS485 interfaces, 4 CAN, 2 I2C interfaces.
Fig. 3 and Fig. 4 respectively illustrates front view and the rear view of locomotive information watch-dog complete machine.
Above-mentioned backboard, each functional cards and input/output board are installed in the chassis, forms locomotive information watch-dog of the present invention.As shown in Figure 3, multiple functional cards can be seen in the front portion (front panel) of cabinet.As shown in Figure 4, input and output board and IO interface thereof can be seen at the back (rear panel) of cabinet.Backboard is fixing in the chassis, not at Fig. 3, shown in 4, can carry out hot plug as required from cabinet front portion to functional cards.
According to an embodiment, the IO interface at cabinet back comprises: the air plug of three cores is power inlet; The air plug of five cores is two-way CVBS video output, and HDMI and VGA delivery outlet; The air plug of eight cores is video input, each air plug two-way, totally 16 road video inputs; Antenna input port is the antenna of 3G wireless transmission card and GPS; The air plug of four-core is RS485 signal and AD signal input, comprises reserved RS485 interface, convenient expansion from now on.
In the chassis, there is also mounted the cooling system from bottom to top, support hot plug equally; Also provide airstrainer, and can plug; And meet the EMC protection of CE, FCC category-A.
Below, for the locomotive information watch-dog that the present invention proposes, each element is described respectively.
backboard
Wherein, backboard provides data exchange channel for whole system, between each board and the input of board and external signal and exporting all undertaken by backboard.According to one embodiment of present invention, backboard is the PCI-E backboard of 3U 14 groove, and such as, rightmost two slots are power supply slot, and middle two is power board slot, and all the other are each feature board slot.
At the beginning of back plate design, with reference to the design proposal of other backboard, absorb wherein high speed transmission of signals part experience, add many low speed bus simultaneously, as buses such as CAN, RS485, for making whole system more reliable, backboard adds the design of double crossing over groove, and system provides PCI-E to exchange groove and network exchange groove.
In one embodiment of the invention, whole backboard is 3U14 groove structure, and middle two slots are for exchanging slot, and all the other 12 slots are function slot.Exchange plank position on slot to fix, the plank of all the other 12 slots is all interchangeable.
Exchanging slot is divided into PCI-E to exchange slot and network exchange slot, each exchange slot have two pairs of high-speed-differential lines pair and each slot interconnected, the data transmission channel of PCI-Ex1 or gigabit Ethernet can be provided.1 pair of high-speed-differential is passed through to interconnected between two between each slot.
In one embodiment, except high-speed-differential line is external, whole equipment provides 4 RS485 data buss, 4 CAN and 1 I2C bus, can meet the transmission requirement of low speed bus data.
In one embodiment, whole backboard adopts 4 kinds of connector: ERNI 2Pair, ERNI 4Pair, 2mm TypeB, 2MMTypeC.Wherein ERNI 4Pair high speed connector is used for data transmission and the low speed bus Signal transmissions of high speed power board, ERNI2Pair high speed connector is used for high speed data transfer and the low speed bus Signal transmissions of each feature board, 2MM TypeC connector inputs for the power supply of power board, 2MM TypeB connector is used for the expansion of User Defined I/O signal, totally 110 pins, can meet current application in most cases.The related request reaching the Ministry of Railways for making the anti-seismic performance of whole backboard and specify, system has selected the Related product in Industry Control on the connectors.
pCI-E exchanges data plate
PCI-E exchanges data plate provides PCI-E data exchange capability, makes each slot on backboard carry out exchanges data by PCI-E signal.PCI-E power board supports the PCI-E its communication ability of 12 mouthfuls of x1.
PCI-E power board provides the PCI-E signal exchange function of whole system, and its master chip adopts 8619 exchange chips of PLX, and PCI-E power board can make two master control borads do two-node cluster hot backup.Its specific works flow process is:
First the control of PCI-E bus is given the port at the first master control borad place;
Second master control borad monitors the duty of the first master control borad;
When the duty of the first master control borad shows fault, the second master control borad notifies described PCI-E power board;
The control of PCI-E bus is switched to the port at the second master control borad place by described power board from the port at the first master control borad place.
According to an embodiment, realize above-mentioned workflow by described master chip.
network data exchange plate
Network data exchange plate provides the data exchange capability of gigabit Ethernet, and exchanges data is carried out by gigabit ethernet interface in each slot on backboard.The two-node cluster hot backup of two master control borads supported too by network data exchange plate, and the workflow of specific works flow process and above-mentioned PCI-E power board is similar, repeats no more here.
master control borad
Master control borad, as the main control module of whole system, is the control center of whole system, it has control chip and codec chip, and being respectively used to provides the control of whole system and the codec functions of video.Compressed video stream, by the PCIExpress bus on backboard, writes memory board.Master control borad has principal and subordinate two pieces, and by PCI-E power board and network exchange plate hot standby.When working at ordinary times, one piece of plank is main, and another block is from plate, and when there being one piece of plank to break down, another block plank can at once as master control borad work.
Master control borad Video coding adopts SVC (Scalable Video Codec)----scalable video technology.
Fig. 5 shows the IO interface of master control borad and the annexation with other equipment or board.As shown in Figure 5, master control borad has video input interface, for receiving the video data from camera; Comprise core bus interface, for carrying out alternately with other functional cards, such as memory board and other expansion board etc.; Display interface, for exporting video data to one or more display; Input through keyboard interface, for receiving the input of keyboard; Power input interface; Network interface and outside input and output warning input interface etc.
Master control borad mainly contains following function: the duty of monitoring whole system; Codec functions is provided, and is stored by memory board; Control expansion module; Communication interface with outside is provided.
During master control board starting, create multiple worker thread: coding and decoding video thread; Storage thread; System monitoring thread; Input and output thread etc.See Fig. 6, the startup workflow of master control borad is as follows:
After master control board starting, the parameter configuration that first reading system is default, then initialization coding/decoding module, carry memory module, last start up system monitoring thread, storage thread, encoding and decoding thread and input and output thread.
The duty of described system monitoring thread periodic detection storage thread, encoding and decoding thread, input and output thread, when find that there is thread have problem or out of service time, produce systematic reset signal;
Monitoring thread by I2C interface, regularly reads the state of each expansion module, if pinpoint the problems or the duty of correlation module not right, just make system reboot by systematic reset signal.The workflow of described monitoring thread is as shown in Figure 7:
Read parameter configuration, obtain the I2C address of each functional cards;
By I2C address, each functional cards is inquired about;
Select one piece of functional cards to inquire about, if Query Result is correct, then select next block functional cards to continue inquiry; Otherwise check error code, reset this functional cards, and next block functional cards is selected to continue inquiry; Perform this step until all functions plate all completes inspection;
Read other worker threads, such as the state of storage thread, encoding and decoding thread, input and output thread;
Judge whether that thread is made mistakes, if do not made mistakes, then started to check next time; Otherwise, check error code, reset master control borad, start to check next time.
According to an embodiment, the frequency of inspection can be set, before namely once checking on starting, first dormancy 2 seconds.
The encoding and decoding thread of master control borad provides codec functions, and when encoding, this thread reads coding/decoding module output squeezing video data, and is transmitted to data memory board, expansion board etc.; When decoding, obtaining compressed video data, and input to coding/decoding module from memory board, decoding exports.The workflow of encoding and decoding thread is as shown in Figure 8:
First, the parameter configuration that reading system is default;
Described parameter configuration is utilized to carry out initialization to codec chip;
Create coding thread and the execution of decoding thread parallel;
Wherein, coding thread execution following steps:
Read a frame video compression data from codec chip, send to storage thread to be stored in memory board by packed data, read next frame video compression data, repeat this step until complete video compress and the storage of all frames;
Wherein, decoding thread execution following steps:
Receiver, video playback signal;
Judge whether replay request, if do not had, continued to perform previous step, otherwise, perform next step;
According to playback duration parameter call memory interface;
Read frame of video from memory board and send to codec chip;
Decoding and output video frame with display;
Judge whether playback terminates, if do not had, read next frame and perform decoding until playback terminates; Otherwise continue receiver, video playback signal.
Described input and output receiving thread, by the key-press input on RS485 interface display panels, mainly contains following controlling functions: the switching controlling the picture partitioning scheme of video frequency output, in real time display video passage; In real time, playback picture switches; Video recording inquiry, playback; Data backup, derivation.
memory board
Memory board provides data storage capacities, and every block plate, containing one or more solid state hard disc, if need more storage space, can install memory board on expansion slot.In one embodiment, analog video signal is inputted by external interface plate, is sent to master control borad via backboard, and the codec chip of master control borad is to encoding video signal, and memory board stores the video data encoder from master control borad.
In one embodiment, memory board can install 1 SATA hard disc.For improving the resistance to shock of whole system, all storage unit can adopt solid state hard disc.Memory board turns SATA interface by PCI-E and master control borad carries out data communication.Memory board can be expanded on any function trough position when memory board capacity is inadequate.
signal acquiring board
Signal acquiring board receives key-press input, the data of TAX main frame and the input of other low speed signals, and is finally forwarded on master control borad.
transmission of wireless signals plate
Transmission of wireless signals plate is used for video and internal system signal to be transferred to Surveillance center by wireless data links such as 3G.This transmission board can adopt the mode such as single deck tape-recorder, many cards to transmit wireless data.
power panel
Power panel is the supply module of whole system, and power supply, by 3 power modules, exports 5V, 12V and 24V tri-kinds of voltages, for system.Power panel has active and standby two pieces, and two power panels are by hot standby mechanism, and when a plank lost efficacy, another plank still can support system normally work.Power panel adopts dual power supply, and the power of each module is 400W, and each module has Anti-surging to design.When one of them power module failure, the normal work of whole system can not be affected.Each power panel have employed the 24V out-put supply module of a quarter brick, the 5V out-put supply module of 1 1/2 brick, the 12V out-put supply module of 1 1/2 brick.
Introduce other workflows of locomotive information watch-dog proposed by the invention below.After system electrification, first the master chip on power board detects each feature board slot.When finding that there is feature board and existing, inquired about the configuration information of each feature board by RS485 bus or CAN, network enabled, distribute relevant IP address, then control the electric sequence of each feature board slot, until feature board stable operation.After stable operation, the master chip on power board, the mode of the configuration information of functional cards by broadcast, sends to all functional cards, and each functional cards can determine whether setting up communication according to this configuration information.Master chip timing on power board sends heartbeat message to each feature board, detects the duty of each feature board.
With reference to figure 9, show when inserting functional cards, described equipment is to the Booting sequence of this functional cards.
When there being functional cards to insert the functional cards slot of backboard, send look-at-me to exchanges data plate;
Exchanges data buttress starts power-up routine according to look-at-me makes functional cards power on;
After functional cards powers on and stablizes, the configuration information of exchanges data plate query function board;
Functional cards reports slot number, configuration information to power board;
Implicit IP address is distributed to the functional cards of band network function;
Exchanges data plate is broadcasted all information of functional cards to other functional cards;
Other functional cards are according to the local configuration information table of the information updating received, and foundation communicates with the new functional cards inserted.
According to an embodiment, exchanges data plate is also sent to the new functional cards inserted the information of other functional cards.
Fig. 1-4 shows the composition structure of whole equipment, below, with reference to Figure 10, introduce the whole treatment scheme of such as vision signal.
First, vision signal is input to the rear panel of locomotive information watch-dog;
Signal is transported to external interface plate by the plug connector on rear panel;
Through the plug connector of external interface plate and backboard and backboard and functional cards, signal is fed to master control borad;
Master control borad processes signal, is compressed by video data, sends to memory board to store by core bus, or is sent to network by network data exchange plate.
According to another embodiment, during described master control borad processes signal, can also do the video image after analog to digital conversion and splice, spliced image be carried out digital-to-analog conversion, is exported by CVBS interface.
Below, important technological parameters and the performance index of locomotive information watch-dog proposed by the invention are introduced.
1. adopt board plug type design: system adopts PCI-E bus architecture, and provide high-speed bus communications pattern end to end, each expansion module can be expanded as required;
2. operation interface: graphical menu operation interface (OSD menu);
3. video input: 16 road composite video input 1.0V, p-p, impedance 75 Ω, vehicle-mounted aviation head;
4. video frequency output: double channel composite video exports 1.0V, p-p, impedance 75 Ω, vehicle-mounted aviation head;
5. video display: single-image, four pictures, nine pictures, 16 picture displays;
6. video standard: pal mode, TSC-system formula;
7. compression of images: H.264SVC compression standard, variable code stream/fixing code stream;
8. data store: by memory board extension storage, all slots all easily extensible are memory board;
9. data input: the bus interface such as functional cards reserves RS485, CAN, outside input is expanded by external interface board;
10. outside IO interface: functional cards reserves RS485, CAN, network interface power panel: 110V input, and power supply is hot standby;
11. master control borads: master control borad double copies, automatically switch;
12. core buss: support PCI-E bus, gigabit Ethernet bus;
13. working temperatures :-25 DEG C----70 DEG C;
14. physical dimension: 4U standard PC case.
Below, feature and the advantage of locomotive information watch-dog is introduced.
1. the transmission of high-speed bus data supported by backboard.
2. the data transfer mode of multibus supported by backboard: PCI-E power board provides PCI-E bus data exchanged form at a high speed; Gigabit ethernet card supports the data exchange ways of gigabit Ethernet; The buses such as remaining RS485, CAN.
3. the two plate of master control borad is hot standby: it is hot standby that two pieces of master control borads do two plate by PCI-E power board and network exchange plate, and when one piece of plank is out of order, another block master control borad can automatically switch to duty, without the need to manual intervention.
4. the two plate of power panel is hot standby: two block power supply plates can provide hot standby mechanism, and when a block power supply plate is out of order, another block power supply plate still can provide stable power supply to export.
5. the favorable expandability of system: by the frame mode of front plug-in card (functional cards), backboard, rear plug-in card (external interface plate), make the extendability of system very good.Each front plug-in card provides the self-defined IO IO interface of 110 pins, when needs expanded function, only front plug-in card and rear plug-in card need being replaced by the board of needs, without the need to doing large change to whole system, being convenient to the smooth upgrade to system.
Above-mentioned embodiment of the present invention is only exemplary illustration, not as limiting the scope of the invention.Those skilled in the art can meet actual needs to embodiment adjustment as required.
Claims (17)
1. a locomotive information watch-dog, is characterized in that:
Described locomotive information watch-dog comprises: cabinet; Fixing backboard in the chassis; From case front panel insert and with multiple functional cards of backboard side grafting; From cabinet rear panel insert and with one or more external interface plates of backboard opposite side grafting; Wherein:
Described backboard comprises multiple slots of multiple functional cards described in grafting;
Described multiple functional cards comprises exchanges data plate, the first master control borad, slave control board, power panel and one or more memory board;
Described one or more external interface plate provides multiple IO interface at cabinet rear panel, comprises power input interface, digital signal input/output interface and simulating signal IO interface.
2. equipment according to claim 1, is characterized in that:
Described backboard has the first plug connector and the second plug connector that are positioned at side, and is positioned at the 3rd plug connector of opposite side, and wherein the second plug connector and the 3rd plug connector couple;
Described functional cards has and the 4th plug connector of described first plug connector grafting and the 5th plug connector with described second plug connector grafting; Described external interface plate has the 6th plug connector with described 3rd plug connector grafting.
3. equipment according to claim 1, is characterized in that:
Described backboard is the PCI-E backboard of 3U 14 groove, there are two and exchange slot, be respectively PCI-E and exchange slot and network exchange slot, each exchange slot have two pairs of high-speed-differential lines pair and each slot interconnected, the data transmission channel of PCI-Ex1 or gigabit Ethernet is provided, passes through a pair high-speed-differential between each slot to interconnected between two.
4. equipment according to claim 3, is characterized in that:
Described backboard also has RS485, CAN and/or I2C bus.
5. equipment according to claim 1, is characterized in that:
Described exchanges data plate comprises PCI-E exchanges data plate and network exchange plate; Described PCI-E exchanges data plate has master chip, and described master chip is 8619 exchange chips of PLX.
6. equipment according to claim 1, is characterized in that:
Described first master control borad and slave control board all have control chip and codec chip, and all have video input interface, core bus interface, display interface, input through keyboard interface, power input interface, network interface and outside input and output warning input interface.
7. equipment according to claim 1, is characterized in that:
Described one or more memory board comprises one or more solid state hard disc respectively.
8. equipment according to claim 1, is characterized in that:
Described power panel comprises main power board and standby electricity source plate.
9. an operation method for locomotive information watch-dog as claimed in claim 1, is characterized in that:
Step one, after described locomotive information watch-dog powers on, the master chip of described exchanges data plate detects the functional cards of each slot grafting of backboard;
Step 2, when finding to there is functional cards, inquires about the configuration information of described functional cards;
Step 3 when described configuration information indicates described functional cards network enabled, is then described functional cards distributing IP address;
Step 4, controls the electric sequence of each functional cards until each functional cards stable operation.
10. operation method according to claim 9, is characterized in that:
After step 4, perform step 5, described master chip sends to all functions board the configuration information of each functional cards by the mode of broadcast, and each functional cards determines whether set up communication according to this configuration information.
11. operation methods according to claim 9, is characterized in that:
Described operation method also comprises the new Booting sequence inserting functional cards, and described Booting sequence comprises:
When there being New function board to insert the functional cards slot of backboard, send look-at-me to described exchanges data plate;
Described exchanges data buttress starts power-up routine according to look-at-me makes described New function board power on;
After New function board powers on and stablizes, the configuration information of exchanges data plate inquiry New function board;
New function board reports slot number and configuration information to power board;
Implicit IP address is distributed to the New function board of band network function;
Exchanges data plate is broadcasted all information of New function board to other functional cards existing except New function board;
Other functional cards are according to the local configuration information table of the information updating received, and foundation communicates with New function board.
12. operation methods according to claim 9, is characterized in that:
Described operation method also comprises the switching flow of the first master control borad and slave control board, and described switching flow comprises:
The control of bus is given the port at the first master control borad place by exchanges data plate;
Slave control board monitors the duty of the first master control borad;
When the duty of the first master control borad shows fault, slave control board notifies described exchanges data plate;
The control of bus is switched to the port at slave control board place by described exchanges data plate from the port at the first mainboard place.
13. operation methods according to claim 9, is characterized in that:
Described operation method also comprises the Booting sequence of master control borad, comprising:
After master control borad powers on, the parameter configuration that first reading system is default, then initialization codec chip, carry stores the storer on board, last start up system monitoring thread, storage thread, encoding and decoding thread and input and output thread.
14. operation methods according to claim 13, is characterized in that:
Described operation method also comprises the monitoring flow process of master control borad for each functional cards, comprising:
Read the parameter configuration of each functional cards, obtain the I2C address of each functional cards;
By I2C address, each functional cards is inquired about;
Select one piece of functional cards to inquire about, if Query Result represents this functional cards normal operation, then select next block functional cards to continue inquiry; Otherwise check error code, reset this functional cards, and next block functional cards is selected to continue inquiry; Perform this step until all functions plate all completes inspection.
15. operation methods according to claim 14, is characterized in that:
Described operation method also comprises the monitoring flow process of master control borad for storage thread, encoding and decoding thread, input and output thread, comprising:
Read the state of storage thread, encoding and decoding thread, input and output thread;
Judge whether that thread is made mistakes, if do not made mistakes, then started to check next time; Otherwise, check error code, reset master control borad, start to check next time.
16. operation methods according to claim 13, is characterized in that:
Described operation method also comprises the encoding and decoding flow process of master control borad, comprising:
The parameter configuration that reading system is preset;
Described parameter configuration is utilized to carry out initialization to codec chip;
Create coding thread with decoding thread with executed in parallel coding flow process and decoded stream journey;
Wherein, coding flow performing following steps:
Read a frame video compression data from codec chip, send to storage thread to be stored in memory board by packed data, read next frame video compression data, repeat this step until complete video compress and the storage of all frames;
Wherein, decoding thread execution following steps:
Receiver, video playback signal;
Judge whether replay request, if do not had, continued to perform previous step, otherwise, perform next step;
According to playback duration parameter call memory interface;
Read frame of video from memory board and send to codec chip;
Decoding and output video frame with display;
Judge whether playback terminates, if do not had, read next frame and perform decoding until playback terminates; Otherwise return receiver, video playback signal step to continue to perform.
17. operation methods according to claim 9, is characterized in that:
Described operation method also comprises the treatment scheme of vision signal, comprising:
Vision signal is input to the rear panel of locomotive information watch-dog;
Signal is transported to external interface plate by the plug connector on rear panel;
Through the plug connector of external interface plate and backboard and backboard and functional cards, signal is fed to master control borad to process vision signal, and the data after process are issued memory board and carried out storing or being sent to network by described master control borad.
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| CN201410735100.9A CN104572534B (en) | 2014-12-06 | 2014-12-06 | Locomotive information monitoring device and its operation method |
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| CN201410735100.9A CN104572534B (en) | 2014-12-06 | 2014-12-06 | Locomotive information monitoring device and its operation method |
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