CN1388030A - Train safety monitoring system - Google Patents
Train safety monitoring system Download PDFInfo
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- CN1388030A CN1388030A CN 02138730 CN02138730A CN1388030A CN 1388030 A CN1388030 A CN 1388030A CN 02138730 CN02138730 CN 02138730 CN 02138730 A CN02138730 A CN 02138730A CN 1388030 A CN1388030 A CN 1388030A
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Abstract
The train safety monitoring system consists of main train network and subnetworks in the railway carriages, the main train network consists of main network controller and main network, and each subnetwork consists of main subnetwork controller, carriage network and basic control units. There are gateways between each main subnetwork controller and main train network and the each gateway consists of monochip computer connected to main subnetwork controller and communication interface connected to main train network. The present invention performs connection data exchange among various intelligent units via stepped network connection. The main network controller can collect data from and send command to various carriage via the gateway and the carriages may be controlled indep9endently and via the main train network.
Description
Technical field
The monitoring and the control system of a plurality of parts of relate generally to train of the present invention relate in particular to the train intelligent cell network system of using simple communications protocol.More specifically, the present invention relates to comprise the system of operating data collection, safety control and the data exchange of network connection, data exchange, long-range connection and interior between each compartment of train.
Background technology
Train operation need be made of common compartment, specific function compartment (as dining car, generator car, baggage car) and headstock.Each compartment comprises a large amount of control conveniences again, as air-conditioning, braking, main power source control etc.Along with the exploitation of train speed raising and other additional functioies, the control system of train will be more complicated.Existing typical practice is the intelligent parts for special Demand Design special use, as the intelligent air condition control unit, and braking control system, intelligent power cabinet etc.
Since not only relatively independent between each unit in train system, connect each other but also exist.When adopting the method for control unit independent design, have in the system needed information is all gathered to reach the purpose of independent operating, this method of designing makes that often occurring in the compartment possible a plurality of separate units in the real system gather same data volume, or a device occurs in a plurality of unit.Like this, not only cause the wasting of resources, and bring inconvenience for staff's management.
In addition, along with the continuous increase of train service function, to the systemic-function demand also in continuous increase.Also need new intelligent cell to insert.Convenience, open expansion scheme are just very important to system implementation.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of and can simplify each intelligent cell, be convenient to manage, coordinate operation each other and open train safe monitored control system.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: it is made of the train major network that connects each compartment, the subnet in each compartment, major network is made up of major network master controller and major network network, and subnet is made up of subnet master controller, compartment network and each basic control unit; Include one chip microcomputer and communication interface in each basic control unit, the communication interface of each basic control unit is connected by the compartment network with the communication interface of subnet master controller; Be provided with gateway (GATWAY) between subnet master controller and the major network network, gateway is made up of one chip microcomputer and communication interface, and the subnet master controller is connected with the one chip microcomputer of gateway, and the communication interface of gateway is connected with the major network network.
The present invention is directed to the actual conditions of existing train, the connection and the data exchange of each intelligent cell have been implemented in the method for attachment of employing hierarchical network.Main body is made of the subnet in the train major network that connects each compartment and each compartment.Major network management train communication and data exchange, data exchange and coordinated manipulation in the subnet management compartment.The gateway of major network master controller by each compartment realized collection and sending controling instruction to each compartment data, and its advantage is: (1) makes that the control in each compartment is relatively independent, and the interference in other compartments is diminished; (2) alleviate the burden of master controller in the major network, the major network master controller only needs the gateway contact with each compartment can realize communication and control to each compartment.The subnet master controller is by each basic control units such as compartment network control conditioning control unit, main power source control unit, axle temperature control unit, brak control unit, global positioning system (GPS) unit, display units.The number of devices that allows in the subnet to insert increases greatly, can reach 127, is used for the expansion of more control units.In addition, it is core design that each basic control unit adopts microcontroller, and each several part both can independently carry out real time data acquisition, processing and control, coordinated manipulation and swap data in the connectable to network again.
Description of drawings
Fig. 1 is the structured flowchart of system of the present invention major network
Fig. 2 is the structured flowchart of the subnet of system of the present invention
Fig. 3 is the constructional drawing that is used for each node computer communication data packets of major network
Fig. 4 is the constructional drawing that is used for each node computer communication data packets of subnet
Fig. 5 is a major network higher-layer programs diagram of circuit
Fig. 6 is a sub-net height layer program flow diagram
Specific embodiments
System implementation plan of the present invention is used to realize the coordinated manipulation between each control unit in data exchange between each compartment of train and the compartment.
Each elementary cell in every joint compartment is that core constitutes the primary mental ability control unit by microcontroller, finishes the basic function of safety control under application program management separately, and each elementary cell is modular form.All basic control units are connected on the subnet master controller (compartment master controller) by subnet net, and realize the coordinated manipulation between each unit in every joint compartment under this subnet main controller controls.The master controller of subnet also shows by display module by the mode of operation of read out instrument with every joint compartment.
Then the subnet master controller is realized transmitting with the data communication and the order of major network by integrated gateway.Major network respectively saves the compartment by main controller controls and carries out data communication, and the major network master controller at first issues instructions to the compartment controller of appointment, is realized the data communication and the management of permutation car by the data communication of compartment controller gateway and major network master controller.
The major network of the diagrammatically shown foundation system of the present invention of Fig. 1.It comprises train major network 101, a plurality of compartments subnet 102, major network master controller 103.Major network master controller 103 is given each compartment subnet 102 by network sending controling instruction data packet, and accepts the data that the compartment subnet returns, to realize the control of train car load.The preferred form of major network network is the rules of RS-485, yet, be interpreted as using other forms of network to realize this invention.
Described compartment subnet 102 is made of compartment master controller 108, compartment network 113, main power source module 114, Climate Control Module 115, axle temperature module 116, brake module 117 and GPS module 118.When system module is expanded, should comprise the module of other expansion.Compartment master controller 108 is made of gateway 110, display module 111 and subnet master controller 112, and interconnects by internal bus 109.Compartment subnet 102 is connected with train major network 101 by gateway 110.
Major network master controller 103 also is connected with the remote computer 107 of monitoring and control centre by wireless module 104, public telephone network 105, modem 106, realizes the real-time monitoring of remote center.The insider can recognize that major network controller 103 can adopt the wireless connections of arbitrary form to monitoring and control centre computing machine 107, and present embodiment is realized with GSM.
The subnet of the diagrammatically shown foundation system of the present invention of Fig. 2.Connect each parts by compartment network 113.The compartment network should comprise the data communication passage of any type, for example: RS-485, ethernet.Preferred embodiment realizes by RS-485.
Connect by internal bus 109 between the module.Bus 109 comprises control bus and data bus, and control bus is used for the communication handshake between the module, and data bus is used for swap data between the module.
Gateway module is made of #1 one chip microcomputer 202 and communication interface 201.Communication interface 201 is realized the physical connection of subnet same column car owner net 101, and #1 one chip microcomputer 202 is by this interface and 103 communications of train major network master controller, to realize the data exchange of compartment to train major network master controller 103.This one chip microcomputer is also by internal bus 109 and subnet master controller 112 swap datas.
The internal connection of compartment master controller 108 is three micro controller systems and internal bus 109.Can have multiple one chip microcomputer (as the MSP430 series of 89 series of 8051 series monolithics of Intel Company, atmel corp and 90 series monolithics, TI company) and internal bus (as walk abreast, SPI) realize.
Power module 210 provides required direct supply for each module of compartment master controller.
The compartment supervising the network that is made of compartment master controller 108 and compartment network 113 can allow the access of a plurality of compartments equipment.Existing access module comprises main power source module 114, Climate Control Module 115, axle temperature module 116, brake module 117 and GPS module 118.
Main power source module is the center with one chip microcomputer 213, inserts the compartment network by communication interface 214, realizes the communication with the subnet master controller.One chip microcomputer 213 is gathered electric signal (as combined-voltage, electric current) by analog quantity input interface 211, by the temperature of temperature sensor input interface 212 collection multiple spots, by the relevant switching value signal of digital-quantity input interface collection.Carry out normal safety control operation according to the signal that collects by control signal Output Interface Control executive device.
Air-conditioning control module 115 has and the similar structure of main power source module.
Axle temperature module 116 is made of one chip microcomputer 219, communication interface 218, temperature sensor interface 217 and output interface 220.One chip microcomputer 219 is gathered the axle temperature in compartment by temperature sensor interface 217, situation according to axle temperature is carried out safe in operation by output interface 220 driving actuating units, and realizes data communication by communication interface 218 by compartment network 113 and compartment master controller.
The GPS module is by one chip microcomputer 228 and one chip microcomputer 230 Collaborative Control.Microcomputer 228 reads the data of GPS by GPS interface 227.One chip microcomputer 230 obtains the data of GPS by internal connection from one chip microcomputer 228, and sets up by communication interface 229 and to be connected with the communication of compartment main control computer 112.
Diagrammatically shown each the node computer communication data packets of major network that is used for of Fig. 3.The data packet 301 of major network communication is made of start byte 302, instruction or data 303 and end byte 304.Start byte 302 has been described this data packet and has been sent to which destination address, and its possible span is 80H-FEH.80H represents that destination address is the major network controller, and promptly data packet mails to the master controller of major network; 81H-94H represents the site number corresponding to each compartment; 95H-FEH keeps to further expanding the website use.Instruction or data 303 comprise data packet 305 and check code 306.Data packet 305 is made of the data that the compartment will send, because the data that send are generally the numerical value less than the decimal scale 100,7 two scale notations of all The data are described in native system.Check code 306 sends the accumulative total and the description of data by all, is the unitarity of considering data, check code adopt this accumulative total and hang down 7 bit values.The value of end byte 304 is hexadecimal numeral FFH.
Can notice that the byte more than or equal to hexadecimal numeral 80H is special control character in the data packet, less than 80H is data.No matter the advantage of this data structure is the compartment subnet and inserts the master network system when, all can determine the transmit status of communication data in network by single byte.The data packet that is sent not only can be with the exchange of the form of whole data packet like this, and to be more suitable for the byte be the communication of unit.
Diagrammatically shown each the node computer communication data packets of subnet that is used for of Fig. 4.The data packet 401 of subnet communication has and the similar form of major network communication data packets, and it is made of start byte 402, instruction or data 403 and end byte 404.Start byte 402 has been described this data packet and has been sent to which equipment, and its possible span is 80H-FEH.80H represents that destination address is the subnet master controller, and promptly data packet mails to the master controller of subnet; 81H-85H represents the numbering to each equipment in the compartment; 86H-FEH keeps to further expansion equipment use.Instruction or data 403 comprise data packet 405 and check code 406.Data packet 405 comprises data and the control command that each equipment need exchange in the compartment.The verification of check code 406 data of description and, the mode of the similar check code 306 of its verification mode.The value of end byte 404 is hexadecimal numeral FFH.
From the numbering 86H-FEH that is preserved for device extension as can be seen, subnet can allow the nearly expansion of 121 new installations, so the expansion capacity of subnet is very big.
Fig. 5 describes a major network high-level flow, and its explanation is according to the associative operation of major network in data exchange process of method and system of the present invention.This diagram of circuit by main program 501, telecommunication thread 502, major network communication thread 503 and compartment net program 504 totally four parts constitute.Main program 501, telecommunication thread 502, major network communication thread 503 operate in the major network master control 103, realize major network control and telecommunication.Compartment gateway program 504 operates on the one-chip computer 202 in the compartment gateway, realizes the data communication with major network master controller 103.
Main program adopts the method for message response to realize.From frame 505, at first enter frame 506 initialization PORT COM, enter frame 507 then and start communication thread, the communication thread that is started comprises telecommunication thread 502 and major network communication thread 503.Then, main program enters frame 508 arrival that waits for the arrival of news.When the message of an incident generation arrived, main program entered frame 509 and checks whether the message that is arrived is Data Update message.If, then enter frame 510 updated stored device and display interfaces, get back to frame 508 then; If not Data Update message, then enter frame 511.Frame 511 checks whether be the message of receiving long range data, if, then enter the data that frame 512 sends current train car load, get back to frame 508 then; If not, then enter end of program message inspection frame 513, if not end of program message, turn back to frame 508 and continue to wait for next message; If end of program message then enters frame 514 and closes the thread that all are opened by this program, last main program enters frame 515 termination routines.
Major network communication thread 527 is also started by main program 501 and closes, as a thread independent operating, by the communication of gateway 110 in major network 101 realizations and each compartment.This thread at first enters the current station number of frame 528 initialization (numbering of each compartment subnet in major network) from frame 527, enters a cycling then.The first step of cycling is to enter frame 529 to send instruction to the station that current station number is described, and enters frame 530 then and waits for the compartment controller return data.Then frame 531 checks whether receive complete data packet in specific time, if receive, i.e. data packet arrival is not overtime, then enters 532 main programs of frame and sends the message that data have been upgraded, and enters frame 533 then; If do not receive complete data packet in specific time, promptly operation overtime then directly enters frame 533.The current station number of frame 533 changes is to next station number, to realize the purpose to compartment gateway scan round communication.After having changed the numerical value of current station number, the major network communication thread turns back to the first step of cycling again, and promptly frame 529 is carried out next cycling.
Can notice that from above-mentioned diagram of circuit realization major network controller of the present invention and related software have multiple choices.As adopt the PC that moves Windows operating system, adopt the workstation of Unix operating system etc.The embodiment that optimizes adopts industrial control computer and Windows XP operating system, utilizes Visual C++ exploitation to finish.
Compartment gateway 110 is in the status of slave in the train major network, it is by the communication of 504 control realizations of compartment gateway program and major network master controller 103.The compartment gateway program at first enters frame 535 major network master controllers and sends instruction from frame 534, enters frame 536 then.Frame 536 checks whether the instruction of being received is the valid instruction that sends to this machine, sends this compartment current data if then enter frame 537, returns frame 535 then and waits for next instruction; If do not receive legal instruction, then directly turn back to frame 535.
Fig. 6 describes a sub-net high-level flow, and its explanation is according to method for interchanging data and control operation between each module of subnet of method and system of the present invention.This diagram of circuit comprises subnet master control program 601, display routine 603, intelligent cell main program 602, intelligent cell interrupt routine 604 totally four parts.Subnet master control program 601 operates on the one chip microcomputer 208, realizes the compartment Network Management.Display routine 603 operates on the one chip microcomputer 203, is used for showing the related data of each equipment of compartment.Intelligent cell main program 602 and interrupt routine 604 operate in and realize safety control and subnet co-operating on the one chip microcomputer of each security control unit.
Subnet primary controller procedure 601 at first enters frame 606 from frame 605, and the initialization data variable also resets from computing machine, i.e. gateway one chip microcomputer 202 and demonstration one chip microcomputer 203.Then, this program circuit enters cycling.The first step of cycling is that frame 607 sends control command to current device, after instruction is sent, enters frame 608 and waits for that the data packet of designated equipments returns.Does program circuit enter frame 609 and checks whether the operation of waiting for data packet overtime then? if, promptly in the time of agreement, do not return complete data, enter frame 611, current device is set is the next equipment of wanting communication; If do not have overtime, promptly the agreement time in received a legal data packet, then enter frame 610, the data of update displayed and gateway computer, the operation finish after, enter frame 611 again.Frame 611 is set after the new current device number, and program circuit turns back to the on-cycle first step again, and promptly frame 607, the repetitive cycling operation.
Intelligent cell main program 602 behind the module electrification reset promptly from frame 612 start programs.At first enter frame 613 initializing computers and open communicating interrupt, promptly when the incident relevant with communication takes place, allow interrupt service routine 604 to carry out break in service.After this, intelligent cell main program 602 enters the safety control circulation.This circulation is from frame 614 pick-up transducers data, and the Data Update data storage area with collecting promptly enters frame 615, enters frame 606 then and carries out the safety control operation according to safety control algorithm output control signal.Operation is finished, and begins circulation from frame 614 once more.
Intelligent cell interrupt service routine 604 begins to carry out from frame 617 after opening communicating interrupt by the frame 613 of main program 602.Its operation mainly is to circulate and subnet primary controller procedure 601 is carried out data communication operation.The first step of cycling is a frame 618, check and receive data? if not, then enter frame 621; If then enter frame 619; Does frame 619 check that the data packet that is subjected to is a valid instruction? if not, then enter frame 621; If then enter frame 620 log-on data transmit operations, response subnet primary controller procedure 601.Does frame 621 check whether also have the data that need transmission in the data buffer? continue cycling if no, then turn back to frame 618; Send data if having data to send then enter frame 622, turn back to frame 618 then.
The effect of display routine 603 is to send display equipment to be shown data and network state information that subnet master controller 601 obtains.This program at first enters frame 624 initializing computers and shows start homepage picture from frame 623, enters cycling then.Cycling is made up of frame 625 and frame 626.Frame 625 reads in the state of keyboard, and frame 626 uses current data to show assigned picture by desired operation, and according to the keyboard value of input parameter is set.
In conjunction with the accompanying drawings 2 and accompanying drawing 6 in explanation, the one chip microcomputer shown in the figure can adopt the chip of a plurality of manufacturers, as 90 series of atmel corp, the MSP430 series of TI company.The embodiment that optimizes adopts different one chip microcomputers at the characteristics of each module, module 114,115,116 and 117 adopts the AT90S8535 one chip microcomputer of ATMEL, and module 118 adopts the compatible one chip microcomputer of Intel Company's 51 series.
Claims (6)
1, a kind of train safe monitored control system, it is characterized in that: it is made of the train major network that connects each compartment, the subnet in each compartment, major network is made up of major network master controller and major network network, and subnet is made up of subnet master controller, compartment network and each basic control unit; Include one chip microcomputer and communication interface in each basic control unit, the communication interface of each basic control unit is connected by the compartment network with the communication interface of subnet master controller; Be provided with gateway between subnet master controller and the major network network, gateway is made up of one chip microcomputer and communication interface, and the subnet master controller is connected with the one chip microcomputer of gateway, and the communication interface of gateway is connected with the major network network.
2, train safe monitored control system as claimed in claim 1 is characterized in that: subnet master controller and gateway are formed the compartment master controller, and the one chip microcomputer of gateway is connected by the one chip microcomputer of internal bus with the subnet master controller.
3, train safe monitored control system as claimed in claim 2, it is characterized in that: also be provided with display module in the compartment master controller, the one chip microcomputer of display module is connected with the one chip microcomputer of subnet master controller and the one chip microcomputer of gateway by internal bus.
4, train safe monitored control system as claimed in claim 1, it is characterized in that: the data packet of major network communication is made of start byte, instruction or data and end byte; Start byte is described this data packet and is sent to which destination address, and its span is 80H-FEH; 80H represents that destination address is the major network controller, and promptly data packet mails to the master controller of major network; 81H-94H represents the site number corresponding to each compartment; 95H-FEH keeps to further expanding the website use; Instruction or data comprise data packet and check code; Data packet is made of the data that the compartment will send, and 7 two scale notations of all The data of transmission are described; Check code sends the accumulative total and the description of data by all, check code adopt this accumulative total and hang down 7 bit values; The value of end byte is hexadecimal numeral FFH.
5, train safe monitored control system as claimed in claim 1, it is characterized in that: the data packet of subnet communication is made of start byte, instruction or data and end byte; Start byte is described this data packet and is sent to which equipment, and its span is 80H-FEH; 80H represents that destination address is the subnet master controller, and promptly data packet mails to the master controller of subnet; 81H-85H represents the numbering to each equipment in the compartment; 86H-FEH keeps to further expansion equipment use; Instruction or data comprise data packet and check code; Data packet comprises data and the control command that each equipment need exchange in the compartment; The verification of check code data of description and, check code adopt this accumulative total and hang down 7 bit values; The value of end byte is hexadecimal numeral FFH.
6, train safe monitored control system as claimed in claim 1 is characterized in that: each basic control unit comprises conditioning control unit, main power source control unit, axle temperature control unit, brak control unit, global positioning system unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138730 CN1388030A (en) | 2002-07-01 | 2002-07-01 | Train safety monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138730 CN1388030A (en) | 2002-07-01 | 2002-07-01 | Train safety monitoring system |
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| CN1388030A true CN1388030A (en) | 2003-01-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457517C (en) * | 2006-01-16 | 2009-02-04 | 杨宗林 | Single person carriage elevated track train traffic system |
| CN101600613B (en) * | 2006-12-04 | 2013-06-05 | 通用电气公司 | System, method and computer software code for remotely assisted operation of a railway vehicle system |
| CN110417839A (en) * | 2018-04-28 | 2019-11-05 | 比亚迪股份有限公司 | The communication means and gateway of compartment network |
| CN111521421A (en) * | 2020-04-30 | 2020-08-11 | 佳讯飞鸿（北京）智能科技研究院有限公司 | Freight train axle state monitoring and early warning system and method |
| CN113885474A (en) * | 2021-09-30 | 2022-01-04 | 株洲中车时代电气股份有限公司 | Control network and train |
-
2002
- 2002-07-01 CN CN 02138730 patent/CN1388030A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457517C (en) * | 2006-01-16 | 2009-02-04 | 杨宗林 | Single person carriage elevated track train traffic system |
| CN101600613B (en) * | 2006-12-04 | 2013-06-05 | 通用电气公司 | System, method and computer software code for remotely assisted operation of a railway vehicle system |
| CN110417839A (en) * | 2018-04-28 | 2019-11-05 | 比亚迪股份有限公司 | The communication means and gateway of compartment network |
| CN110417839B (en) * | 2018-04-28 | 2021-02-23 | 比亚迪股份有限公司 | Communication method and gateway of train compartment network |
| CN111521421A (en) * | 2020-04-30 | 2020-08-11 | 佳讯飞鸿（北京）智能科技研究院有限公司 | Freight train axle state monitoring and early warning system and method |
| CN111521421B (en) * | 2020-04-30 | 2022-06-21 | 佳讯飞鸿（北京）智能科技研究院有限公司 | Freight train axle state monitoring and early warning system and method |
| CN113885474A (en) * | 2021-09-30 | 2022-01-04 | 株洲中车时代电气股份有限公司 | Control network and train |
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