CN1805299B - Information transmission system, information transmission system for railway vehicle and information transmission terminal device for vehicle - Google Patents
Information transmission system, information transmission system for railway vehicle and information transmission terminal device for vehicle Download PDFInfo
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- CN1805299B CN1805299B CN 200610003689 CN200610003689A CN1805299B CN 1805299 B CN1805299 B CN 1805299B CN 200610003689 CN200610003689 CN 200610003689 CN 200610003689 A CN200610003689 A CN 200610003689A CN 1805299 B CN1805299 B CN 1805299B
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Abstract
The inventions provides a highly reliable high speed network in which transmission can be sustained promptly even if a multiplex failure occurs, and a high speed transmission path can be dealt with by shortening the transmission processing time. In a system comprising a plurality of transmission terminal stations capable of transmitting information mutually through a transmission path, the plurality of transmission terminal stations are interconnected through a plurality of transmission paths, the transmission terminal station has a relay function means for transmitting data received from some transmission terminal station to other transmission terminal station, and a transmission relay means has a means for receiving the same information through a plurality of transmission lines 21 and 22 and relaying the information by selecting any one path.
Description
Technical field
The present invention relates to the Vehicular information transmission terminal device that uses in the suitable information transmission system used at the rail truck internal transmission information and this information transmission system, even be particularly related to when on transmission path, multiple faults occurring, also the technology that can continue to transmit.
Background technology
Be accompanied by development of internet technology in recent years, the message transmission of in various fields, utilizing network to carry out, practicability.Wherein, also comprise as rail truck, the influence when obstacle occurring is very big, requirement has the reliability of height and the field of fail safe.Therefore, even press for the information transmission system that multiple combination obstacle can not interrupt transmitting yet, reliability is high appears.
Transmission technology as also continuing to transmit in the face of multiple combination obstacle has the routing technique in the general network technology Ethernet.In addition, as the network technology that rail truck is used, the technology that also has patent documentation 1 to record and narrate.
In routing technique, the router of selection transmission path is exchange message each other, according to communication object, selects suitable path at any time.Therefore,,, also can select the path that to communicate by letter, continue transmission even occur obstacle so if prepare transmission path more than needed in advance.
In the technology that patent documentation 1 is recorded and narrated, 2 transfer stations are set respectively in each vehicle, the transfer station of each vehicle as the 1st transmission path, when loop connects, also will be connected as the 2nd transmission path between 2 station terminal stations in the vehicle.Like this,, just can utilize the 2nd transmission path to form circuitous path, continue transmission if in the 1st transmission path, obstacle occurs.
[patent documentation 1] spy opens flat 11-154891 communique
Routing technique is because develop as current techique, so be when constituting complicated network and the technology of the excellence that also can move in large-scale network.And, owing to extensively popularize, so can enough low-cost networks that constitutes., router is realized with software usually, and need be selected transmission path after the content of each reception data of identification.Therefore, exist receive data after, up to its long problem of processing time till correct path output.When the transmission speed high speed, its influence is big especially.In addition, when obstacle occurring, in order to seek new path, router is exchange message each other, needs tens of seconds to several minutes time., in the machine Control Network of transmission system etc., require its transmission delay little in the car of railway, the change of the transmission path when obstacle occurring also must be carried out in instantaneous (for example below the 100ms).Therefore, be difficult to routing technique intactly is applied to such use.
The technology that patent documentation 1 is recorded and narrated is also being prepared path more than needed, is being selected when obstacle occurring on this point in path, with routing technique be same technology.In this technology, owing to adopt loop structure, so the transmission of Information path exists dextrorotation and left-handed two.Like this, even obstacle appears in 1 place, also can transmit with certain path.When obstacle appears in many places, just transmit information via circuitous path.After considering the obstacle that causes that breaks, the circuitous path action of the both sides at broken string position need be made, during two places broken string, the circuitous path action (when being the broken string of adjacency, being 3 place's circuitous paths) at 4 places must be made.Complaint message need is shared in the terminal station that is connected with the circuitous path that makes its action, need be between these terminal stations exchange message.In addition, moving is when multiple combination obstacle occurring, occurs also will being confirmed to be single obstacle or multiple combination obstacle behind the obstacle.Therefore, this technology is also quite time-consuming in the recovery of obstacle.
Summary of the invention
The objective of the invention is to, though provide occur multiple combination obstacle also can continue rapid transmission and transmission process time short, can adapt to the high speed of the high speed of transmission path, highly reliable network.
The present invention, in the system that constitutes by a plurality of transmission terminals station that can transmit information by transmission path mutually, between a plurality of transmission terminals station, connect with a plurality of transmission paths, the transmission terminal station has the data that the transmission terminal station from other is received, and sends to the transmission trunking functional unit at other transmission terminal station again; The transmission trunking unit has by many transmission paths and receives same information, selects the path selection unit of relaying behind some paths.
After adopting the present invention, can realize the network of the high reliability that the many places fault in the face of transmission path and transmission terminal station also can continue to transmit.
Description of drawings
Fig. 1 is the structure chart at the transmission terminal station of the joint of 1 in the 1st execution mode of the present invention vehicle.
Fig. 2 is the johning knot composition of the interior machine of 1 vehicle in the 1st execution mode of the present invention.
Fig. 3 is the structure chart that the rail truck in the 1st execution mode of the present invention is used the information transmission system.
Fig. 4 is the structure chart of the path switching part in the transmission terminal station in the 1st execution mode of the present invention.
Fig. 5 be in the 1st execution mode of the present invention from the accepting state of the backbone transmission path of path switching part and graph of a relation to the output of switching hub (switching hub).
Structure chart when Fig. 6 is a separation vehicle in the 1st execution mode of the present invention.
Fig. 7 is the structure chart at the transmission terminal station of the joint of 1 in the 2nd execution mode of the present invention vehicle.
Fig. 8 is the structure chart that the rail truck in the 2nd execution mode of the present invention is used the information transmission system.
Fig. 9 is the structure chart of the path switching part in the transmission terminal station in the 2nd execution mode of the present invention.
Figure 10 is the structure chart of the detection unit of the path switching part in the 2nd execution mode of the present invention.
Figure 11 is the structure chart of transmission data.
Figure 12 is the structure chart at the transmission terminal station of the joint of 1 in the 3rd execution mode of the present invention vehicle.
Figure 13 is the structure chart that the rail truck in the 3rd execution mode of the present invention is used the information transmission system.
Figure 14 is the structure chart of the path switching part in the transmission terminal station in the 3rd execution mode of the present invention.
Embodiment
Below, with reference to Fig. 1～Fig. 6, tell about the 1st execution mode of the present invention.In this example, be the situation of telling about the information transmission system that rail truck uses.Fig. 2 represents the syndeton of the machine that a vehicle in this example is interior.The transmission terminal station 112,122 that is provided with in the vehicle is connected to each other by backbone transmission path 21,22, can exchange message.Have 112,122 and 2 the backbone transmission paths 21,22 in 2 transmission terminal stations, dualization in order to ensure the property more than needed for mechanical disorder.In vehicle, disposing a plurality of machines 41～46, they are connected with transmission terminal station 112,122 by a spider lines 31,32.In the present embodiment, consider the place that is provided with of machine, connect the interior machine 41～46 of vehicle with 2 spider lines 31,32.Article 1, be mounted on machines such as underfloor inverter 41 and brake 42, another is mounted on machines such as display 43 on the floor, broadcaster 44, car door 45, air-conditioning 46.In branch line transmission path 31,32 separately, at the two ends of a spider lines 31,32, the transmission terminal station 112,122 that disposes dualization is provided with each machine therebetween.Even this is when fault such as broken string occurring in branch line transmission path 31,32, also can communicate with some transmission terminals station 112,122.After adopting said structure, the machine in the vehicle is via spider lines 31,32 and underlying network 112,122, a transfer instruction value and a state information etc. mutually.
In addition, the structure of present embodiment, the structure that does not rely on the particular machine in the vehicle and prop up spider lines.So, be connected with the machine that Fig. 2 does not illustrate, perhaps be not connected with the machine shown in Fig. 2, perhaps connect transmission terminal station and machine with different structures, can be suitable for too.
Fig. 1 represents the structure at the transmission terminal station in the present embodiment.Fig. 1 represents the structure of 1 joint vehicle, by having 121,122 backs, 2 transmission terminal stations by dualization.And the backbone transmission path 22 that transmission terminal station 122 usefulness 2 that the backbone transmission path 21,2 that the 1 transmission terminal station that is, 121 usefulness 1 are is are is connected with the vehicle of adjacency respectively.The inside at transmission terminal station 121,122 is made of path switching part 213,214,223,224, switching hub 211,221, control part 212,222.Communication between each one between the transmission terminal station and the transmission terminal station, use all purpose communication mode---Ethernet, formation can be handled the complete dual communication of transmitting-receiving simultaneously.In Fig. 1, represent to receive and send with different lines respectively, represent the transmission of Information direction with arrow.In addition, in Fig. 2, the transmission path that will receive and dispatch is simplified to 1 line to be represented.In addition, though omit in Fig. 1, control part 212,222 is connected with each machine in the vehicle by the branch line transmission path.
Control part 212,222, the information of in vehicle each machine of collecting is transferred to other vehicle, perhaps will be transferred to each machine from the information of other vehicle.Switching hub 211,221, commonly used in Ethernet (registered trade mark) as the transmission trunking device, have the function that will send to other a plurality of ports from the data of certain port (portion is gone in output) reception.Path switching part 213,214,223,224 is arranged between switching hub 211,221 and the backbone transmission path 21,22, switches which path (backbone transmission path) of switching hub from 1,2 are and receives data.Each path switching part 213,214,223,224 receives data from the backbone transmission path that is certainly, and the data that receive are exchanged between 1, the 2 path switching parts that are.And, wherein a side is sent to switching hub 211,221.Send to the transmission data of backbone transmission path 21,22 by switching hub 211,221, toggle path ground will not send to from the data of the switching hub 211,221 that is certainly from the backbone transmission path 21,22 that is.
After adopting this structure, between each vehicle, carry out following transfer of data.At first, control part 212,222 is by the collect data of the machine in vehicle of branch line transmission path.Then, process the data of collecting as required, send to the switching hub 211,221 of two systems.Switching hub 211,221, the path switching part 213,214,223,224 about sending the data to, path switching part 213,214,223,224 intactly send to these data backbone transmission path 21,22 again.Like this, between adjacent vehicle, just receive identical data based on transmission path 21,22 from two systems.Path switching part 213,214,223,224 is the data that will receive from the backbone transmission path 21,22 of two systems, the side that selects in advance according to the accepting state of data sends to switching hub 211,221.Switching hub 211,221 sends to the vehicle of control part 212,222 and adjacency with the data that receive.Control part 212,222 is processed these data as required, by the branch line transmission path, is transferred to each machine.
Path switching part 213,214,223,224, the path of adopting following method selective reception data.Under initial condition, select to monitor accepting state simultaneously from two systems from system always.Then, from being when receiving data, to select certainly from system.Because the obstacle of transmission path etc., from interrupting from the reception of system and when its system receives, select its system.When interrupting from the reception of two systems, select initial condition from system.Like this, even interrupt from a certain side's of the backbone transmission path of dualization reception, as long as can receive from the opposing party, control part just can receive data, can also send the data to its adjacent vehicle by the backbone transmission path in addition.
In addition, by the action of the control part 212,222 of dualization, can be some actions and a certain mode in the duplex system arranged side by side that the standby duplex system that occurs switching when unusual or two systems move simultaneously.This also can determine according to the specification that requires as entire system.When adopting duplex system arranged side by side,,, only get final product to sending from system so control part 212,222 separately needn't send to two systems because two systems send identical data.
In addition, control part 212,222 separately receives data from the switching hub 211,221 of two systems, but both can use singlely, also can use both sides.If receive only data, abandon the data of other system etc. all the time, just the processing of control part can be simplified from system.If receive from both sides, switch the back according to accepting state and use, just can improve reliability.
If with the combination of actions of above-mentioned control part 212,222, carry out the action of duplex system side by side, receive only from system, also only send from system, just will control part 212,222 be connected with the switching hub 211,221 of its system, can make designs simplification.
In addition, in the present embodiment,, used after the first reception data switching hub of relaying again as the transmission trunking machine.But also only can use the trunk concentrator of repeating signal electrically.But when using trunk concentrator, the platform number that connects in Ethernet is restricted, also can produce conflict when a plurality of in addition nodes send data simultaneously, data is produced postpone, so must be noted that.Special as present embodiment, when in the control of train, using,, need to adopt the structure that avoids conflict owing to do not allow the delay of data.
Fig. 3 represents the structure chart of the rail truck of present embodiment with the information transmission system.In Fig. 3, the situation of 4 vehicle marshallings is shown.The transmission terminal station 111～114,121～124 of each vehicle, by dualization, the transmission terminal station 111～114 of 1 system is with backbone transmission path 21 connections of 1 system; The transmission terminal station 121～124 of 2 systems is with backbone transmission path 22 connections of 2 systems.In the figure, represent the transmission path received and dispatched with 1 solid line.The transmission terminal station of each vehicle periodically sends the data to the backbone transmission path 21,22 of two systems., consider the responsiveness of machine control here, the transmission cycle is decided to be 10ms.Dotted arrow among the figure, when obstacle occurring in the expression transmission path, the transmission path of the data that the transmission terminal station 111 of No. 1 car 1 system sends.The obstacle position, " * " that be decided to be among the figure locates.In addition, omitted the interior machine of branch line transmission path and vehicle in the figure.
In this embodiment, obstacle appears in the backbone transmission path 21,22 of two systems, with simple dualization network, the transfer of data of No. 1 car can not be given the transmission terminal station of two systems of the transmission terminal station that No. 2 cars 2 are, 3, No. 4 cars., in the present embodiment, each transmission terminal station 111～114,121～124 has from two systems and receives data, according to its accepting state, with certain transfer of data give in this transmission terminal station control part and in abutting connection with the function of vehicle.In Fig. 3, the transmission terminal station 113 of transmission terminal station 122 that 2 of No. 2 cars are and 1 system of No. 3 cars detects to use from the left side of figure from the reception of system and interrupts and situation about continuing with the reception of its system.At this moment, No. 3 cars 2 are, No. 4 cars 1,2 are, can not receive the data from No. 1 car, but because receive information from No. 2 cars or No. 3 cars, interrupt so detect to receive.Detect and receive the transmission terminal station of interrupting, it is will be the data vehicle relaying to the right of reception from him later on that RX path is switched to him.Like this, data are according to the transmission of the path shown in the arrow of the dotted line among Fig. 3, and all transmission terminal stations 111～114,121～124 can both receive data.
Vehicle fleet size not simultaneously, and trouble location is more for a long time, can continue transmission too.And be not broken string, be when in transmission terminal station 111～114,121～124, breaking down, too can transceive data.For example: in Fig. 3, even 2 between 1, No. 2 car is not broken string of backbone transmission path 22, break down in the transmission terminal station that No. 1 car 2 is, after RX path is switched at the transmission terminal station that No. 2 cars 2 are, can continue transmission too.
Like this, in the present embodiment, if receive data from each transmission terminal station by a side of the backbone transmission path of dualization, just can normal transmission, even when in transmission path and transmission terminal station, multiple faults occurring, also can continue transmission.The switching in the path when breaking down is carried out separately by each transmission terminal station, so the fault message between the transmission terminal station does not need transmission.Therefore, after breaking down, can begin transmission with new path rapidly.
Fig. 4 represents the structure of the path switching part in the transmission terminal station in the present embodiment.Path switching part 213 has 3 ports (portion is gone in output), is connected with switching hub, the path switching part that he is, the backbone transmission path that is certainly respectively.Communication mode adopts Ethernet, and each port is made of with physical layer IC320 with transformer 310, Ethernet Ethernet.Transformer 310 is electrically insulated communication path and circuit.Physical layer IC320 carries out handling and communication data being transformed into according to the reception of the extraction of the voltage signal on the transmission path communication data transmission processing of the voltage signal on the transmission path.3 physical layer IC320 are connected with logic section, and logic section 330 monitors the accepting state of each port, carries out the switching in the path of data.
The connecting interface of physical layer IC320 and logic section 330 here, adopts as ethernet standard by normalized MII interface.In the MII interface, from the reception data of transmission path, with receiving the of data own---the reception enabling signal RXEN of the existence of RXD and expression data represents.In addition, to the transmission data of transmission path, with sending the of data own---the transmission enabling signal TXEN of the existence of TXD and expression data represents.Receiving data RXD and sending data TXD is the parallel data of 4bit.Therefore, the responsiveness of logic section 330 can be lower than the transmission speed of the data in the transmission path.
A timer 322 monitors from the accepting state that is the backbone transmission path certainly another timer 323 monitors from him to be the accepting state of path switching part.In timer 332,333, as reset signal, the reception enabling signal RXEN of input port separately.Receive data and receive enabling signal RXEN become effectively after, timer just is reset, but when not receiving data more than the certain hour, interrupts (time out) with regard to time of occurrence.The generation state that interrupts by timer 332,333 output express times, the i.e. signal of the accepting state of this port.Break period time of timer 332,333, set longlyer at interval than the reception of data, interrupt so that can detect transmission conscientiously.In the present embodiment, will be decided to be 10ms, will be decided to be break period time of timer 30ms from transmission cycle of the data of vehicle separately.Like this, when interrupting, transmission just can detect rapidly.
Logic product operational part 334, according to the output signal of timer 332,333, the signal of decision selector output.Fig. 5 represent in the present embodiment from the accepting state of the backbone transmission path of path switching part and relation to the output of switching hub.Reception is during from the data that are certainly, and output is from the coefficient certificate.From the reception interruption that is certainly, from him is that the data that he is are exported in the output of switching selector 331 when receiving data.All paths all interrupt or the initial condition that after just dropping into power supply, waits in, as the state that can export the reception data that oneself is.
Like this, just often, will export to switching hub from the reception data that are certainly, when obstacle occurring,, also can switch by the path even interrupt from the reception that is certainly, to export to switching hub from the reception data that he is, so as whole system, transmission can not interrupted.In addition, the reception of interruption is temporary transient defect, when restarting to receive, as shown in Figure 5, once more will be from the reception data that are certainly to switching hub 221,221 outputs.According to the state of obstacle, can also make from the frequently variation repeatedly between communications status and the interrupt status that is received in that is certainly.At this moment, the switching in path is frequently carried out repeatedly, and it is unstable that whole system becomes sometimes.In order to prevent this situation, can be when receiving again from the signal that is certainly, the communication of affirmation continue certain hour above after, again the path is returned from being.
In the present embodiment, constitute the switching of transmission path with hardware or logical circuit.Therefore action at a high speed can be carried out, the high speed of transmission speed can also be adapted to.In addition, in logic section, because content that needn't recognition data,, can realize with low-cost so handle simply.
Fig. 6 is illustrated in the railway of present embodiment with in the information transmission system, the structure chart behind the separation vehicle.The machine construction of each vehicle is basic identical, and the structure of the state network after the separation is also identical.So, after the separation, also can carry out the very high transfer of data of reliability.
In addition, at the separated position of vehicle, owing to interrupt,, the path switching part receives from setting from the data of system so becoming according to Fig. 5 from the reception of two systems.In this state, after vehicle merged once more, merging portion became system's structure connected to one another separately, just can continue normal transmission from firm merging back.
Like this, in the present embodiment, the transmission terminal station sends data to the both sides of 2 backbone transmission paths, even because fault and from when the data interruption of system, also can use the data of his system to continue transmission by the handoff functionality of transmission path.And, even also can interruptedly not continue communication when multiple faults occurring.In addition, as mentioned above, the Interrupt Process during fault, need be between the transmission terminal station exchange message etc., all carry out to self-disciplinings.
In addition, in the present embodiment, the Ethernet that network using is widely used as current techique, but in alternate manner, also can obtain same effect.
Below, with reference to Fig. 7～Figure 11, tell about the 2nd execution mode of the present invention.In Fig. 7～Figure 11, for the identical part of having told about of the 1st execution mode, repeat no more.In this example, also be the situation of telling about the information transmission system that rail truck uses.Fig. 7 represents the structure at the transmission terminal station of 1 joint vehicle in the information transmission system that the rail truck of present embodiment uses.The 1st execution mode of telling about with preamble is the same, utilizes the branch line transmission path that the transmission terminal station is connected with machine in the vehicle, also utilizes backbone transmission path 21,22 that the transmission terminal station is connected to each other.The structure at transmission terminal station is also roughly the same.Carry out on this point of structure of switching in path but specify this point of address of other vehicles and path switching part 216,217,226,227 to adopt to monitor at control part 215,225 from the accepting state of the data of the address of appointment, different with the 1st execution mode.
Fig. 8 represents the structure chart of the rail truck of present embodiment with the information transmission system.The structure at the structure of vehicle and transmission terminal station and connection, the same with the 1st execution mode.In the present embodiment, each transmission terminal station monitors the vehicle of accepting state, is adjacent vehicle and then adjacent again vehicle, when reception from the data of certain vehicle, and from system break and with the continuation of its system the time, toggle path.
, in Fig. 8, dot the state that data are transmitted here, tell about when obstacle taking place, the transmission path of the data that the transmission terminal station 111 that No. 1 car 1 is sends at 2 places of usefulness * expression.In the transmission terminal station 222 that No. 2 cars 2 are, owing to be that he all interrupts from being received from of No. 1 car, so can not give No. 3 cars with the transfer of data of No. 1 car.In the transmission terminal station 123 that No. 3 cars 2 are, monitor reception from No. 1 car and No. 2 cars, detect from being received from of No. 1 car be interrupt, he is the situation of continuation, switches RX path.Like this, give No. 4 cars with the transfer of data of No. 1 car.
When this obstacle occurring, the transmission terminal station that No. 3 cars 2 are can normally receive the data from No. 2 cars.Therefore, in previously described the 1st execution mode, the transmission terminal station 123 that No. 3 cars 2 are is judged to receive and is continued, so do not carry out the switching in path.Like this, be that the transfer of data of backbone transmission path 22 just can not be proceeded by 2.Different therewith, in the present embodiment, can the accepting state of each information source all be monitored, switch by the path, transmission is continued.In other words, present embodiment can adapt to 1,2 more situations such as obstacle between being in same vehicle.
In Fig. 8, suppose that 1 of No. 2 cars are and 2 do not have obstacle between being, the transmission terminal station 122,123 that 2 of No. 2 cars and No. 3 cars are is toggle path all.In this state, the data at the transmission terminal station 122 that from No. 2 cars 2 is are dropped in the transmission terminal station 123 that No. 3 cars 2 are, so repeating etc. of data can not occur, do not have what problem., in this state, the transmission terminal station 123 that original No. 3 cars 2 are is toggle path not preferably.Therefore, from must vehicle far away more, the time that the time till detecting communication disruption interrupts just establishes greatly more.Specifically, will be decided to be 30ms, will be decided to be 50ms from break period time from 2 vehicles from break period time of adjacent vehicle.Like this, in last example, the transmission terminal station 122 that No. 2 cars 2 are is with regard to first toggle path.So, in the transmission terminal station that No. 3 cars 2 are,, switch so do not carry out the path owing to restart from the reception that is certainly of the data of No. 1 car.
In the present embodiment, the quantity that monitors the vehicle of accepting state is decided to be 2, but that how many this numerals gets is good.The quantity of monitoring vehicle is many more, and the property more than needed of system is just high more.But the processing of carrying out for supervision is just complicated more.Therefore, should consider the quantity of decision vehicle after both pros and cons.
Fig. 9 represents the structure of the path switching part in the transmission terminal station in the present embodiment.Basic structure is identical with the 1st execution mode, but this point of the supervision of carrying out accepting state with detection unit 340 with the input of detection unit 340 as from different on the reception data RXD of physical layer IC and this point from the address that receives enabling signal RXEN and control part.
Figure 10 represents the structure of the detection unit of the path switching part in the present embodiment.With the detection unit 350 that monitors from each vehicle of the accepting state of specific vehicle, be uniformly set 2 with the quantity of the vehicle that monitors.In the detection unit 350 of each vehicle, at first address comparing section 354,355 judges whether the information source of the data that each receiving port receives is consistent with the address of control part setting.Figure 11 represents the structure of transmission data in the Ethernet.As the information source identification address, use the IP address here.The IP address is 4 bytes from front the 29th byte number of transmission data.In the comparing section of address, after the reception data, will compare from the address that 4 bytes and the control part of the 29th byte number are set.When the address of information source is consistent, timer 351,352 is resetted.When not receiving the data from the address of setting more than the certain hour, generation time interrupts.Like this, just detect the situation that is received in this port interruption from the vehicle of this address.Logic product 353 whether judge from be side joint receive interrupt and he to be side joint receive the state that continues.Output from the detection unit 350 of each vehicle is transfused to logic and 341.Logic and 341 in certain vehicle from be side joint receive to interrupt and he to be side joint receive when continuing, to the signal of selector output toggle path.
In the detection unit 350 of each vehicle, the setting-up time that the time interrupts from must near more vehicle, be set greatly more, switches in order to avoid unnecessary path occurs., will be decided to be 30ms here, will be decided to be 50ms from time from the interruption of the time of 2 vehicles from the time that the time of adjacent vehicle interrupts.
In the present embodiment, according to the switching of the content judgement transmission path that receives data, the processing of logic section is than the 1st execution mode complexity., handle with hardware, processing speed can not reduce.The high speed that like this, also can adapt to transmission speed.In addition, the structure of setting logic section from control part for is adopted in the address of vehicle nearby, also can adapt to when address change., when not changing in the address of each vehicle etc., also can can't help control part to set, preestablish in the inside of logic section.At this moment, can realize the simplification handled.
Below, with reference to Figure 12～Figure 14, tell about the 3rd execution mode of the present invention.In Figure 12～Figure 14, for the identical part of having told about of the 1st, the 2nd execution mode, repeat no more.In this example, also be the situation of telling about the information transmission system that rail truck uses.
Figure 12 represents the structure at the transmission terminal station of 1 joint vehicle in the information transmission system that the rail truck of present embodiment uses.The 1st execution mode of telling about with preamble is the same, utilizes the branch line transmission path that the transmission terminal station is connected with machine in the vehicle, also utilizes backbone transmission path 21,22 that the transmission terminal station is connected to each other.In the present embodiment, the transmission terminal station constitutes with substance system, and the backbone transmission path is constituted with duplex system.
Data transmission method in the present embodiment is as follows.Control part 212, each the machine acquisition of information in the vehicle, processing sends to switching hub 211 as required.Switching hub 211 sends to path switching part 218,219 with these data.It is both sides with the 2 backbone transmission paths that are 21,22 that the path switching part sends to these data 1 again.
Like this, the vehicle of adjacency receives identical data from the backbone transmission path 21,22 of two systems, path switching part 213,214 accepting states according to data, a side who selects in advance the data that will receive from the backbone transmission path 21,22 of two systems sends to switching hub 211.Switching hub 211 sends to the data that receive on the vehicle of control part 212 and adjacency.After control part 212 is processed these data as required,, send to each machine by the branch line transmission path.
Path switching part 218,219, the path of adopting following method selective reception data.Under initial condition, select 1 data that are, monitor accepting state simultaneously from two systems always.Then, be that selection 1 is when receiving data from 1.Interrupt and, select 2 to be because the obstacle of transmission path etc. makes from 1 reception that is from 2 being when receiving.When interrupting, select 1 of initial condition to be from the reception of two systems.
Like this, even interrupt from some receptions of the backbone transmission path of dualization, as long as can receive from another, control part just can receive data, can also send the data to its adjacent vehicle by the backbone transmission path in addition.
Figure 13 represents the structure chart of the railway of present embodiment with the information transmission system.In each vehicle, transmission terminal station 111,112,113,144 respectively is provided with 1, is connected by the backbone transmission path 21,22 of dualization.The dotted arrow of Figure 13, when obstacle occurring in the expression transmission path, the transmission path of the data that the transmission terminal station 111 of No. 1 car 1 system sends.The obstacle position, " * " that be decided to be among the figure locates.
No. 1 car sends data to two backbone transmission paths 21,22.2, No. 4 cars are because from 1 being the reception data, so these data are transmitted to follow-up car.In No. 3 cars, though 1 reception that is interrupt because from 2 being reception, so will transmit to follow-up car from 2 data that are.Like this, in the present embodiment,,, just can continue transmission as long as had one in the transmission path 21,22 of dualization normally even obstacle appears in transmission path.
Figure 14 represents the structure of the path switching part in the transmission terminal station in the present embodiment.Basic structure is identical with the path switching part of the 1st execution mode, but the path switching part that in the port one is not with he is is connected, but is that backbone transmission path 22 is connected with 2.In addition, also will be from the reception data of exchange hub, be not with a system but with this point that the backbone transmission path of two systems is connected on different.Like this, just can always export from two backbone transmission paths 21,22 of the data that exchange hub.About reception data from backbone transmission path 21,22, the same with the 1st execution mode, according to accepting state one direction switching hub is exported.
In the present embodiment, owing to the transmission terminal station of each vehicle as substance be, so simpler than the apparatus structure of the 1st execution mode.Though for not by the poor reliability of the fault at the transmission terminal station of the part of multipleization, because transmission path is dualization, so, can obtain the high reliability identical with the 1st execution mode for the obstacle of transmission path.
In addition, in above each execution mode of telling about, told about in rail truck examples of applications in the information transmission system.But in the message transmission that other system that carries out transfer of data with same syndeton uses, also can use the present invention.
Claims (15)
1. an information transmission system comprises a plurality of transmission paths and a plurality of transmission terminals station that can transmit information mutually by described a plurality of transmission paths, it is characterized in that:
Described transmission terminal station has:
Path selection unit from the data of described a plurality of transmission paths receptions by other transmission terminal station reception, and is selected to be relayed to following switching hub behind some paths in described a plurality of transmission path; With
Switching hub receives the described data from described path selection unit, and described data are sent to other transmission terminal station again.
2. the information transmission system as claimed in claim 1 is characterized in that: described path selection unit, according to each accepting state, select the path from described a plurality of transmission paths.
3. the information transmission system as claimed in claim 1 is characterized in that: if when a plurality of information source is arranged, described path selection unit is according to from each the accepting state of each described information source by described a plurality of transmission paths, selection path.
4. the information transmission system as claimed in claim 3 is characterized in that: described path selection unit, according to the reception that has or not within a certain period of time from described information source, select the path;
Described information source has a plurality of, the described certain hour difference of each information source.
5. the information transmission system as claimed in claim 1 is characterized in that: the described switching hub in the described transmission terminal station sends information to a plurality of described transmission paths.
6. rail truck information transmission system, have: connect the transmission path between the vehicle of railway train and in each vehicle, is connected also and can between vehicle, transmit the transmission of Information terminal station mutually with described transmission path, described railway train is formed by connecting by a plurality of vehicles, it is characterized in that:
Transmission path between the described vehicle is made of two transmission paths independently;
The described transmission terminal station of each vehicle has:
Path selection unit receives via the information in abutting connection with vehicle from described two transmission paths, and selects some transmission paths, to following switching hub relaying; With
Switching hub receives the described information from described path selection unit, and described information is sent to this vehicle machine and another is in abutting connection with vehicle.
7. the rail truck information transmission system as claimed in claim 6, it is characterized in that: in each vehicle, 2 described transmission terminal stations are set, described switching hub separately in described 2 transmission terminal stations, a transmission path in two transmission paths between described vehicle sends information.
8. the rail truck information transmission system as claimed in claim 6, it is characterized in that: in each vehicle, a described transmission terminal station is set, the described switching hub in the described transmission terminal station, two transmission paths of two transmission paths between described vehicle send information.
9. as each described rail truck information transmission system of claim 6～8, it is characterized in that: described path selection unit, according to each accepting state of two transmission paths between the described vehicle, select the path.
10. as the claim 6 or the 7 described rail truck information transmission systems, it is characterized in that: if when a plurality of information source is arranged, described path selection unit according to from each the accepting state of specific vehicle by the transmission path between the described vehicle, is selected the path.
11. the rail truck information transmission system as claimed in claim 10 is characterized in that: described path selection unit, according to the reception that has or not within a certain period of time from described information source vehicle, select the path;
The described certain hour difference of each vehicle.
12. a Vehicular information transmission terminal device carries out message transmission by independently two transmission paths between the vehicle that connects railway train, described railway train is formed by connecting by a plurality of vehicles, it is characterized in that, has:
Path selection unit, the transmission terminal device by described two transmission paths from other receives data, and selects some transmission paths again to following switching hub relaying;
Switching hub receives the described data from described path selection unit, and information is sent to this vehicle machine and another is in abutting connection with vehicle.
13. Vehicular information transmission terminal device as claimed in claim 12 is characterized in that: described path selection unit, according to each accepting state of described two transmission paths, select the path.
14. Vehicular information transmission terminal device as claimed in claim 12 is characterized in that: if when a plurality of information source is arranged, described path selection unit is according to from each the accepting state of each described information source by described two transmission paths, selection path.
15. Vehicular information transmission terminal device as claimed in claim 14 is characterized in that: described path selection unit, according to the reception that has or not within a certain period of time from described information source, select the path;
The described certain hour difference of each information source.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005005391 | 2005-01-12 | ||
| JP2005005391A JP4472535B2 (en) | 2005-01-12 | 2005-01-12 | Information transmission system, railway vehicle information transmission system, and vehicle information transmission terminal device |
| JP2005-005391 | 2005-01-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1805299A CN1805299A (en) | 2006-07-19 |
| CN1805299B true CN1805299B (en) | 2011-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610003689 Active CN1805299B (en) | 2005-01-12 | 2006-01-11 | Information transmission system, information transmission system for railway vehicle and information transmission terminal device for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4472535B2 (en) |
| CN (1) | CN1805299B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4881223B2 (en) * | 2007-05-24 | 2012-02-22 | 株式会社東芝 | Railway vehicle transmission system and transmission switching device |
| JP5458904B2 (en) * | 2010-01-20 | 2014-04-02 | 富士電機株式会社 | Communication system synchronization method, communication system, master station |
| JP5711653B2 (en) * | 2011-12-15 | 2015-05-07 | 株式会社日立製作所 | Information transmission system and information transmission method |
| JP6102669B2 (en) * | 2013-01-15 | 2017-03-29 | 富士電機株式会社 | Transmission repeater, data relay method, and program |
| CN105027455B (en) * | 2013-03-11 | 2017-05-03 | 三菱电机株式会社 | Train information management device |
| KR102447125B1 (en) * | 2022-04-27 | 2022-09-27 | 주식회사 포에스텍 | Safety monitoring system using gateway unit of railway distribution line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311567A (en) * | 2000-02-29 | 2001-09-05 | 株式会社日立制作所 | Radio relay system |
| WO2003077501A1 (en) * | 2002-03-14 | 2003-09-18 | Koninklijke Philips Electronics N.V. | Method of and system for multi-path communication |
-
2005
- 2005-01-12 JP JP2005005391A patent/JP4472535B2/en not_active Expired - Fee Related
-
2006
- 2006-01-11 CN CN 200610003689 patent/CN1805299B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311567A (en) * | 2000-02-29 | 2001-09-05 | 株式会社日立制作所 | Radio relay system |
| WO2003077501A1 (en) * | 2002-03-14 | 2003-09-18 | Koninklijke Philips Electronics N.V. | Method of and system for multi-path communication |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4472535B2 (en) | 2010-06-02 |
| CN1805299A (en) | 2006-07-19 |
| JP2006197114A (en) | 2006-07-27 |
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