CN104683441A - Communication method of railway vehicle network system - Google Patents
Communication method of railway vehicle network system Download PDFInfo
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- CN104683441A CN104683441A CN201510011921.2A CN201510011921A CN104683441A CN 104683441 A CN104683441 A CN 104683441A CN 201510011921 A CN201510011921 A CN 201510011921A CN 104683441 A CN104683441 A CN 104683441A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The invention discloses a communication method of a railway vehicle network system, relating to the communication method and comprising the steps of carrying out an initial operation of a TCN (train communication network); mapping addresses of WTB (wire train bus) nodes as node indexes, wherein a node index sequence can describe relative positions of each WTB node; mapping the positions of the WTB nodes to actual positions of a vehicle; and completing communication between the WTB nodes by utilizing the WTB node indexes.
Description
Technical field
The present invention relates to a kind of rail vehicle network field, particularly a kind of communication means of rail vehicle network system.
Background technology
Network system is the nervous system of rail vehicle.Information transmission between rail vehicle subsystems can be realized by the network control system of rail vehicle to share, gather subsystems operating state and failure diagnosis information, and the work order of central control system is transferred to subsystems and realizes Long-distance Control.Therefore, network system is the important system that rail vehicle runs, and efficient with stable the communicating how realizing the network system of rail vehicle is also the problem of no less important.
Summary of the invention
For above technical problem, present applicant proposes a kind of communication means, comprising: perform TCN and just run; WTB node address is mapped as node index, and wherein said node index sequence can describe the relative position of each WTB node; WTB node location is mapped to vehicle physical location; And utilize WTB node index to complete communication between WTB node.
Method as above, comprises further: perform TCN and just run.
Method as above, wherein execution TCN just runs and comprises: all described WTB nodes are all set to weak bus; Determine that 1 weak bus becomes weak main equipment, described in other, WTB node becomes from equipment; Determine all WTB addresss of node, position, orientation and eigenperiod.
Method as above, is wherein mapped as node index by WTB node address and comprises: determine that the node index of coxopodite point is 1; And from coxopodite point to top node, node index adds 1 successively.
Method as above, is wherein mapped to vehicle physical location and is included in coal addition position information in process data, to determine the corresponding relation of the physical location of the process data that WTB node sends and vehicle by WTB node location.
Method as above, wherein said positional information comprises: organize into groups numbering, this unit train position and heavily join signal.
Method as above, comprises further: identify master control car; And according to the controller sender of master control car after instruction, determine turning to from the motor of car controlling.
Method as above, wherein identifies that master control car comprises: when having in train and only having a vehicle to take, the described vehicle taken becomes master control car.
Method as above, comprises further: after described master control car is determined, all identify from car controlling whether consistent with the orientation of described master control car, to determine the direction from car controlling.
Whether method as above, wherein allly identify consistent with the orientation of described master control car from car controlling, to determine to comprise from the direction of car controlling: be oriented to train reference direction with the relative WTB main equipment of master control car, notified all from car controlling by WTB process data; From the direction of the relative WTB main equipment of car controlling, contrast with train reference direction; If be in the same way from car controlling comparison result, then, when master control car sends instruction forward, be sent to front instruction to train control unit TCU; When master control car sends instruction backward, be sent to rear instruction to TCU; And if be oppositely from car controlling comparison result, then when master control car unit sends instruction forward, be sent to rear instruction to TCU; When master control car sends instruction backward, be sent to front instruction to TCU.
Method as above, comprises further: send control command message from the main control unit of main equipment to other from control unit.
Method as above, comprises further: from other from control unit feedback device operating state and fault message message.
Method as above, comprises further: the process data of all WTB nodes at least sends once in a transmission cycle.
Method as above, comprise further: WTB process data is divided into P1, P2, P3, P4 port, wherein P1 port data is not Time-sharing control information, P2 port data is not timesharing critical state information, P3 port data is time-sharing facilities state information, and P4 port data is timesharing fault message.
Accompanying drawing explanation
Below, will be described in more detail the preferred embodiment of the present invention by reference to the accompanying drawings, wherein:
Fig. 1 is the flow chart of communication means according to an embodiment of the invention.
Fig. 2 is that TCN according to an embodiment of the invention just runs node address distribution schematic diagram.
Fig. 3 heavily joins schematic diagram after TCN according to an embodiment of the invention just runs.
Fig. 4 is according to WTB node address sequence diagram after the first end of run of an example of the present invention TCN when heavily joining.
The mapping relations of two kinds of sequence nodes of embodiment according to the present invention shown in Fig. 5.
Fig. 6 is that node location according to an embodiment of the invention maps schematic diagram.
Fig. 7 is direction discernment schematic diagram according to an embodiment of the invention.
Fig. 8 is WTB process data communication time diagram.
Fig. 9 is WTB process data configuration diagram according to an embodiment of the invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The present invention relates to the communication protocol for realizing network system communication of the rail vehicle of such as EMU.According to one embodiment of present invention, the communication protocol of rail vehicle network system runs configuration protocol, normal running train level communication protocol, vehicle grade communication protocol three parts at the beginning of comprising.
The first operation of TCN (Train Communication Network, TCN) refers to when train composition changes, particularly each coupling of vehicles or when seting out, and the main equipment of TCN will configuration bus again, and this process is called just to be run.TCN has just run WTB fieldbus configuration, to each WTB peer distribution node address, sets up WTB process data communication.Be in the communication protocol of first operation phase and just run configuration protocol.(comprise and heavily join train) signal of transmitting between WTB network element after normal running train level communication protocol is used for defining and just runs.Vehicle grade communication protocol refers to the agreement of vehicle grade network element internal transmission.This three section communication agreement constitutes the core of train network control system communication protocol.
According to one embodiment of present invention, communication protocol of the present invention meets IEC 61375 and UIC556 standard.
According to one embodiment of present invention, from the angle of hardware, TCMS (train control and monitor system) wagon control and surveillance adopt train level, vehicle grade two-stage bus type topological structure, and wherein train level bus adopts WTB bus; And vehicle grade bus adopts MVB.The two can be all two-way redundancy.
WTB is wired train bus.According to one embodiment of present invention, WTB is by the twisted-pair shielded wire circuit be connected between MVB unit of gateway control.WTB covers car load by automatic car coupler, allows heavily to join operation.Data communication between WTB process MVB unit.According to an example of the present invention, WTB dynamic configures.That is, the unit number be articulated in bus is variable.According to an example of the present invention, WTB bus communication speed is 1.0Mbit/s.
MVB belongs to train elementary cell internal data bus.MVB can only static configuration.According to one embodiment of present invention, in network control, every 4 cars are a MVB unit.Each MVB unit have employed main chain-branched structure, and each car is all provided with repeater, and a MVB unit is divided into multiple branch.Like this, even if there is certain subscriber device network communication fault, also can only affect the communication of subsystem in network and this car, the network communication of whole network element can not have been affected.Connected through WTB bus again by respective gateway between two MVB unit, realize the transmission of information.According to an example of the present invention, MVB medium is twisted-pair shielded wire cable, and traffic rate is 1.5Mbit/s.
As described above, configuration protocol is just run for realizing organizing into groups data and the data flow of vehicle required transmission in Dynamic Configuration Process; And normal running train level communication protocol needs data and the data flow of transmission in normal course of operation for realizing marshalling vehicle.Train just runs configuration protocol and normal running train level communication protocol two parts are called train level network communication protocol.Vehicle grade communication protocol is not related in example of the present invention.
1. train just runs configuration protocol
Operate to single-row or in heavily joining vehicle node at the beginning of train and distribute topological address, the attribute of the vehicle fleet in determining and each vehicle, for address is set up in the transmission of follow-up normal operating process data and message data, for the train level and the cell level that realize control to set up with diagnosis to communicate and control basis.
Fig. 1 is the flow chart of communication means according to an embodiment of the invention.As shown in Figure 1, in order to realize interconnecting of train network system, train just runs and comprises TCN and just run (step 110) and operation just runs (step 120-150) two parts; Wherein, in step 110, TCN has just run WTB fieldbus configuration, to each WTB peer distribution node address, sets up WTB process data communication; And just run in the operation of step 120-140 and comprise following four steps: node index, node recognition, the identification of master control car and direction discernment.
Operation just runs each and is described as follows:
In step 120, node index: WTB node address is mapped as according to certain rule the node index being convenient to application access, and describes the relative position of each WTB node by node index sequence;
In step 130, node recognition: after TCN just runs, when number of nodes is normal or abnormal, is mapped to vehicle physical location by WTB node location;
In step 140, master control car identification: the vehicle identifying train occupation; And
In step 150, direction discernment: all identifying with the orientation of master control car from car controlling is in the same way or oppositely, to determine that the controller sender of master control car is after instruction, from turning to of the motor of car controlling.Wherein, the direction of rotation of motor is determined according to the actual installation of train directions and motor and the mode of connection by TCU.
According to one embodiment of present invention, described communication means 100 can realize the configuration of WTB number of nodes, WTB node direction, train directions; Wherein,
1.WTB number of nodes: the quantity that a marshalling interior nodes activates;
2.WTB node direction: identification both direction: point to train car end (1) or to train inside (2).
3. train directions:
A (), when train is for singly organizing into groups, the train forward direction that should specify to take drivers' cab unit is the direction 1 of the WTB of this unit, and the train backward directions taking drivers' cab are directions 2 of the WTB of this unit; The train forward direction of unoccupied drivers' cab is the direction 2 of the WTB of this unit, and the train backward directions of unoccupied drivers' cab are the directions 1 of the WTB of this unit;
B (), when train heavily joins, the train forward direction that should specify to take drivers' cab is the direction 1 of the WTB of this unit, take the direction 2 that drivers' cab train backward directions are WTB of this unit; The train forward direction taking the unoccupied drivers' cab unit of drivers' cab place marshalling is the direction 2 of the WTB of this unit, and the train backward directions taking the unoccupied drivers' cab unit of drivers' cab place marshalling are directions 1 of the WTB of this unit; The train forward direction hanging together unit of unoccupied drivers' cab place marshalling is the direction 1 of the WTB of this unit, and the train backward directions hanging together unit of unoccupied drivers' cab place marshalling are the directions 2 of the WTB of this unit; The non-train forward direction hanging together unit of unoccupied drivers' cab place marshalling is the direction 2 of the WTB of this unit, and the non-train backward directions hanging together unit of unoccupied drivers' cab place marshalling are the directions 1 of the WTB of this unit.
1.TCN just runs
1.1.1.TCN the condition just run:
In situations, TCN should start just to run:
1) during system electrification;
2) WTB end node is lost;
3) WTB master-failure;
4) when train hangs together and de-connects; And
5) when gateway redundancy switches.
1.1.2.TCN the principle just run:
Following function is realized after TCN just runs:
1) node is connected electrically to their cable joint, forms single section that there is terminator each end;
2) each node receives a unique address, identifies its position relative to main equipment and orientation, and the eigenperiod desired by it and node descriptor are informed main equipment;
3) each node receives the descriptor being called topology, and it indicates other address of node, position and descriptor.
According to one embodiment of present invention, when TCN just runs, node address distribution principle is as follows:
1) main equipment (perform and just run) receives 01 address;
2) main equipment definition direction 1 is " end ", and direction 2 is " top ", and does not consider actual motion direction;
3) main equipment is with descending name node on direction 1, and initial address is 63 (initial address also can be other values), and the node that the party upwards finally names is coxopodite point;
4) main equipment is in direction 2 with ascending order name node, and initial address is 02, and the node that the party upwards finally names is called top node;
5) main equipment can name at most 62 nodes (maximum nodes also can be other values);
6) unnamed node all responds (two passages all can regard accessory channel as) with " unnamed " address on its main channel and accessory channel.
Fig. 2 is that TCN according to an embodiment of the invention just runs node address distribution schematic diagram.As shown in Figure 2, main equipment position is the 3rd node.Therefore, 1 direction of main equipment node is " end ", and first and second node are named as 62 and 63, and the 4th node is named as 2.If more vehicles are heavily linked togather, its name also can according to rule above, by that analogy.
Fig. 3 heavily joins schematic diagram after TCN according to an embodiment of the invention just runs.As shown in Figure 3, heavily joining the node address distribution obtained after just running is take main equipment as starting point equally, on main equipment 1 direction, names first and second nodes to be 62 and 63, and on main equipment 2 direction, names the 4th node to be 2.
In an embodiment of the present invention, WTB node can be divided into three ranks: strong node, weak bus and from node.WTB node rank can be applied and arrange.
Strong node can be employed to reduce to weak bus.If it is strong master, it tells all nodes by sending signal, and it is demoted, but as weak main maintenance to the control of bus, until specify a strong node.Usually, in a marshalling, application only has a node as strong node.If there is more than one strong node in bus, first running will be divided into independently total segment as many with strong node number bus, because each total segment can only have a main equipment.
Usually, in a marshalling, application specifies several or all nodes to be weak bus.In the marshalling not having strong node, the competition results of an all node of equality process ensure that one and only has a weak bus to become weak master, and other all node becomes from equipment.If weak master has detected strong node, or another controls the existence of more weak masters from node, then this weak chief commander demoted and become another main equipment from node.Weak bus is employed to be promoted to strong node, if it is not also main equipment, it will become strong master and perform bus just operation function.At any time apply not allow it to become the node of main equipment from node.
1.1.3.TCN first running
In an example of the present invention, lower TCN just running comprises the following steps:
1) power on to gateway.Should be mediated during gateway power-off set condition (specifically asking for an interview standard GB/T/T 28029.1 chapters and sections 4.2.4.2.1).
2) setting eigenperiod is 25ms.
3) all gateways are all set to weak bus, by the process such as name, name and the sovereignty competition of disappearing, determine that 1 weak bus becomes weak master, other nodes become from equipment, and determine all addresss of node, position, orientation and eigenperiod, complete TCN and just run.
1.1.4.TCN first operation result
In an example of the present invention, when after TCN just end of run, each node should obtain following information:
1) whether be WTB main equipment;
2) be in the same way or oppositely with the direction of main equipment;
3) node address;
4) number of nodes;
5) coxopodite dot address; And
6) top node address.
Above TCN just operating procedure can be applied in communication means as shown in Figure 1.It will be appreciated by those skilled in the art that the first operating procedure of TCN of the present invention can also be implemented in other manners.
1.2. operation just runs
With reference to figure 1, in communication means of the present invention, step 120-150 is referred to as operation just operation.Operation just runs based on TCN just operation result, after TCN has just run, identifies other operational orders, carries out the operation of node index, node recognition, the identification of master control car and direction discernment.
1.2.1. node index
According to an example of the present invention, when heavily joining, after the first end of run of TCN, two kinds of WTB node address sequences may be there are.As shown in Figure 4, only for example purposes, WTB node address sequence is respectively 1-2-3-4 and 62-63-1-2.Certainly, for the WTB node of direction independent assortment, the node address sequence of formation is more.
After TCN just runs, because the position of main equipment is different, such as, main equipment produces at random when node is weak master, cause the WTB node address method of salary distribution different.In this case, the inconvenient WTB node address that directly uses accesses WTB process data.In order to use the process data of the fixing all nodes of sequence node access WTB, in the following ways WTB node address is mapped:
1) determine that the node index of coxopodite point is 1;
2) from coxopodite point to top node, node index adds 1 successively.
After node address maps, adopt node index accesses WTB process data.The mapping relations of two kinds of sequence nodes of embodiment according to the present invention as shown in Figure 5.
The mapping algorithm of WTB node address is as follows:
1.2.2. node recognition
Node recognition refers to after TCN just runs, and WTB node location is mapped to vehicle physical location.After adopting node index to travel through the process data of all WTB nodes, need to identify the source position of process data.Coal addition position information in process data, to determine the corresponding relation of the physical location of the process data that WTB node sends and vehicle.The positional information added in the process data of each WTB node comprises following position signalling:
1) marshalling numbering: unique identification, represents which marshalling node belongs in.Marshalling numbering signal adopts 2 byte BCD coded systems, represents that 4 rank license number, is included in process data;
2) this unit train position: represent node 1 end or 2 ends (1 end is 1 car, and 2 ends are 8 cars) in marshalling.This unit train position signalling adopts BOOL variable, is included in process data.
3) heavily signal is joined: represent that node is that heavily to join end be also non-heavy end.Heavily join signal and adopt BOOL variable, be included in process data.
1.2.2.1. heavily join mode
Two trains heavily join, and have three kinds heavily to join mode:
1) heavily mode 1 is joined: 8 cars of marshalling 1 and 1 car of marshalling 2 heavily join.1 end WTB node of the 2 end WTB nodes and marshalling 2 that are characterized as marshalling 1 has and heavily joins signal;
2) heavily mode 2 is joined: 8 cars of marshalling 1 and 8 cars of marshalling 2 heavily join.2 end WTB nodes of the 2 end WTB nodes and marshalling 2 that are characterized as marshalling 1 have and heavily join signal;
3) heavily mode 3 is joined: 1 car of marshalling 1 and 1 car of marshalling 2 heavily join.1 end WTB node of the 1 end WTB node and marshalling 2 that are characterized as marshalling 1 has and heavily joins signal.
1.2.2.2. position maps
After receiving the process data of all WTB nodes, by the positional information in WTB process data, all can by all WTB process data port mapping to vehicle physical location.
Fig. 6 is that node location according to an embodiment of the invention maps schematic diagram.As shown in Figure 6, for heavily joining the rear WTB sequence node for 4-3-2-1, due to all 1-2-3-4 not yet of node, therefore, its position existed as Fig. 6 maps: for the WTB process data of index node 1, its positional information comprises marshalling numbering: marshalling 2, the position at this unit: 2 ends, and heavily joins signal: non-heavy end; For the WTB process data of index node 2, its positional information comprises marshalling numbering: marshalling 2, the position at this unit: 1 end, and heavily joins signal: heavily join end; For the WTB process data of index node 3, its positional information comprises marshalling numbering: marshalling 1, the position at this unit: 2 ends, and heavily joins signal: heavily join end; For the WTB process data of index node 4, its positional information comprises marshalling numbering: marshalling 1, the position at this unit: 1 end, and heavily joins signal: non-heavy end.
1.2.3. the identification of master control car
Master control car is the vehicle of train occupation, is responsible for sending the control commands such as whole train traction, braking.After only identifying master control car, train just can receive the operational order of drivers' cab.The principle of master control car identification is: when having in train and only having a vehicle to take, the vehicle of this train occupation becomes master control car, otherwise train does not produce master control car.When detect from car controlling there is multiple master control car time, think that master control car is invalid.
Only have one end vehicle to insert key under normal circumstances, this vehicle identification is master control car.When existing one end vehicle insertion key becomes master control car, other end vehicle also inserts key, and now should be judged as that master control car is invalid, train does not have master control car.When hanging together and de-connect, allow intermediate car become master control car, other time middle car should not be allowed to become master control car.
Due to turn back at train or other operating modes time, need the position often changing master control car, therefore the identification of master control car is the process of a dynamic realtime.The change of master control car can not cause TCN just to run, but can cause the change of the identification of master control car and direction discernment in operation just operation.
1.2.4. direction discernment
After master control car is determined, allly all to identify whether consistent with the orientation of master control car from car controlling, to determine the train directions from car controlling.
The principle of direction discernment is as follows:
1) with the direction of WTB main equipment for train reference direction, when after WTB just end of run, all nodes all know that the orientation of own node and WTB main equipment is in the same way or oppositely;
2) after master control car is determined, be oriented to train reference direction with the relative WTB main equipment of master control car, notified by WTB process data all from car controlling;
3) from the direction of the relative WTB main equipment of car controlling, contrast with train reference direction, if be worth identical, then with master control car in the same way; If value is different, then reverse with master control car.Drivers' cab take change time, relative direction identifies again.From car controlling, comparison result is preserved;
4), if be in the same way from car controlling comparison result, then when master control car sends instruction forward, front instruction is sent to train control unit (Train Control Unit, TCU); When master control car sends instruction backward, be sent to rear instruction to TCU;
5) if be oppositely from car controlling comparison result, then, when master control car unit sends instruction forward, rear instruction is sent to TCU; When master control car sends instruction backward, be sent to front instruction to TCU.
Fig. 7 is direction discernment schematic diagram according to an embodiment of the invention.As shown in Figure 7, main equipment is WTB node 1, and master control car is node 62.The direction of main equipment node 1 is " left ", and the direction of node 62 is " left "; And the direction of node 63 and node 2 is " to the right ".Therefore, with the orientation of WTB main equipment after just running with reference to WTB, sequence node 62-63-1-2 is respectively in the same way-oppositely-in the same way-reverse.Master control car is node 62, and master control car node 62 is oriented to " in the same way " relative to WTB main equipment node 1.The reference direction of train is " left ".Being " oppositely " from the direction of car controlling 63 and node 2 relative to WTB main equipment node, is " oppositely " with train reference direction.Being " in the same way " from car controlling node 1 direction relative to WTB main equipment node, is " in the same way " with train reference direction.When driver sends " forward " instruction at master control car, master control car node 62 is " in the same way " relative to WTB main equipment node 1 according to comparing result, is sent to front instruction to TCU; And be " oppositely " from the direction of car controlling 63 and node 2 according to comparing result, be sent to rear instruction to TCU.Vice versa.
2. normal running train level communication protocol
According to one embodiment of present invention, utilize normal running train machine communication protocol, issue unified control command and the equipment working state of feedback necessity and fault message in train level, realize normal operation that is single-row or that heavily join.
According to one embodiment of present invention, regular message is adopted to carry out information transmission that is single-row or that heavily join.Specifically, communication means comprises and sends control command message from the main control unit of main equipment to other from control unit; And from other from control unit feedback device operating state and fault message message.
2.1 transmission cycle
According to one embodiment of present invention, WTB process data should adopt the transmission cycle of 25ms, and namely in 25ms, the process data of all WTB nodes at least sends once (data for paging only send one page).All process datas at least should send once in 500ms.
WTB process data message length is 128 bytes.Specify according in GB/T 28029.1 chapters and sections 4.4.2.2, the time sending a frame WTB process data message is 1756us.Therefore at least the process data message of 4 WTB nodes can be sent once in 25ms.Fig. 8 is WTB process data communication time diagram.As shown in Figure 8, for there is the train of 4 WTB nodes, within the cycle of 25ms, a frame WTB process data message can be sent for each WTB node.Thus, in a transmission cycle, the WTB process data message of each node can both be sent out.According to one embodiment of present invention, by classifying to the real-time of Signal transmissions, sent in each for data high for requirement of real-time cycle, the data timesharing that requirement of real-time is lower sends.
2.2 data type
Fig. 8 is WTB process data communication time diagram according to an embodiment of the invention.According to the embodiment of Fig. 8, WTB process data is divided into P1, P2, P3, P4, P5 port, is described as follows:
1) P1 port data is sent by the master control car layout in organizing into groups, and wherein master control car sends order, and comprise control command, the data such as speed, each cycle sends, not timesharing;
2) P2 port data is by sending status signal to master control car from car controlling in organizing into groups, the control (status signal that this unit of master control car is used for the control of train level can obtain from MVB, without the need to passing through WTB bus transfer) of train level is carried out for master control car.Master control car P1 port and " master control car mark " signal distinguishing be identified by P1 port in byte 1 from car controlling P2 port;
3) P3 port data is sent by all unit layouts in organizing into groups, and be mainly vehicle key equipment state, each cycle sends, not timesharing;
4) P4 port data is sent by all unit layouts in organizing into groups, and is mainly vehicle arrangement state, time-sharing send; And
5) P5 port data is sent by all unit layouts in organizing into groups, and is mainly vehicle trouble messages, time-sharing send.
Fig. 9 is WTB process data configuration diagram according to an embodiment of the invention.As shown in Figure 9, the length of WTB process data is 128 bytes, and wherein P1 or P2 port data is 0-47 byte, and P3 port data is 48-95 byte, and P4 port data is 96-111 byte, and P5 port data is 112-127 byte.With reference to figure 8 and Fig. 9, wherein P1 port and P2 port data are not Time-sharing control information, and P3 port data is not timesharing key equipment state information, and P4 port data is time-sharing facilities state information, and P5 port data is timesharing fault message.
2.3 process data agreements
So-called process data agreement comprises transmission cycle and data type as described above and sends control command message from the main control unit of main equipment to other from control unit; And from other from control unit feedback device operating state and fault message message, thus achieve the data communication of train when normal operation.
WTB process data host-host protocol contains the important control and status signal that each train subsystem needs WTB to transmit, and comprises and is not limited to the subsystem such as high pressure, traction/auxiliary, braking, door, air-conditioning, illumination, fixed speed control, fire alarm, mistake phase-splitting, charger, storage battery, bogie.
Above-described embodiment is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the present invention, can also make a variety of changes and modification, therefore, all equivalent technical schemes also should belong to category disclosed by the invention.
Claims (16)
1. a communication means, comprising:
Perform TCN just to run;
WTB node address is mapped as node index, and wherein said node index sequence can describe the relative position of each WTB node;
WTB node location is mapped to vehicle physical location; And
WTB node index is utilized to complete communication between WTB node.
2. method according to claim 1, comprises further: perform TCN and just run.
3. method according to claim 1, wherein execution TCN just runs and comprises: all described WTB nodes are all set to weak bus; Determine that 1 weak bus becomes weak main equipment, described in other, WTB node becomes from equipment; Determine all WTB addresss of node, position, orientation and eigenperiod.
4. method according to claim 1, is wherein mapped as node index by WTB node address and comprises: determine that the node index of coxopodite point is 1; And from coxopodite point to top node, node index adds 1 successively.
5. method according to claim 1, is wherein mapped to vehicle physical location and is included in coal addition position information in process data, to determine the corresponding relation of the physical location of the process data that WTB node sends and vehicle by WTB node location.
6. method according to claim 5, wherein said positional information comprises: organize into groups numbering, this unit train position and heavily join signal.
7. method according to claim 1, comprises further: identify master control car; And according to the controller sender of master control car after instruction, determine turning to from the motor of car controlling.
8. method according to claim 7, wherein identifies that master control car comprises: when having in train and only having a vehicle to take, the described vehicle taken becomes master control car.
9. method according to claim 8, comprises further: after described master control car is determined, all identify from car controlling whether consistent with the orientation of described master control car, to determine the direction from car controlling.
10. method according to claim 9, wherein all identify from car controlling whether consistent with the orientation of described master control car, to determine to comprise from the direction of car controlling:
Be oriented to train reference direction with the relative WTB main equipment of master control car, notified by WTB process data all from car controlling;
From the direction of the relative WTB main equipment of car controlling, contrast with train reference direction;
If be in the same way from car controlling comparison result, then, when master control car sends instruction forward, be sent to front instruction to train control unit TCU; When master control car sends instruction backward, be sent to rear instruction to TCU; And
If be oppositely from car controlling comparison result, then, when master control car unit sends instruction forward, be sent to rear instruction to TCU; When master control car sends instruction backward, be sent to front instruction to TCU.
11. methods according to claim 1, comprise further: send control command message from the main control unit of main equipment to other from control unit.
12. methods according to claim 11, comprise further: from other from control unit feedback device operating state and fault message message.
13. methods according to claim 12, comprise further: the process data of all WTB nodes at least sends once in a transmission cycle.
14. methods according to claim 12, comprise further: WTB process data is divided into P1, P2, P3, P4 and P5 port, and wherein P1 port data is sent by master control car, comprises control command, the data such as speed, and each cycle sends, not time-sharing send; P2 port data sends status signal to master control car by from car controlling, carries out the control of train level for master control car; P3 port data sends by main control unit or from control unit, comprises vehicle key equipment state, and each cycle sends, not timesharing; P4 port data sends by main control unit or from control unit, comprises vehicle arrangement state, time-sharing send; And P5 port data sends by main control unit or from control unit, is mainly vehicle trouble messages.
15. methods according to claim 14, the wherein port data of P1, P2 and P3 not time-sharing send, and the port data time-sharing send of P4 and P5.
16. methods according to claim 14, wherein master control car P1 port and " master control car mark " signal distinguishing be identified by P1 port first byte from car controlling P2 port.
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