CN109677468A - Train logic control element and logic control method - Google Patents
Train logic control element and logic control method Download PDFInfo
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- CN109677468A CN109677468A CN201910161700.1A CN201910161700A CN109677468A CN 109677468 A CN109677468 A CN 109677468A CN 201910161700 A CN201910161700 A CN 201910161700A CN 109677468 A CN109677468 A CN 109677468A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
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Abstract
The invention of this reality is related to a kind of train logic control element and logic control method, and LCU is using hot backup redundancy design, the main control module including input module, output module and at least two Redundancy Designs；The output end of input module is connect with each main control module respectively, and the output end of each main control module is connect with output module respectively；Input module acquires input direct-current voltage information, is sent to main control module；Main control module obtains d. c. voltage signal, calculates and generates load driving control signal, is sent to load through output module.Input module, output module and main control module can be configured to two and multiply two to take two redundancy structures.Each module of present system carries self-diagnostic circuit, it can be achieved that the fault diagnosis and redundancy of each redundant circuit switch, and improves the reliability of system；System configuration multiplies two for two and takes two frameworks, further increases security of system.
Description
Technical field
The invention belongs to rail vehicle control system technical field more particularly to a kind of train logic control element and patrol
Collect control method.
Background technique
There are the contactor controls mode such as a large amount of relay, these devices to be connected by cable for track train, structure
At the logic control system of train operation, for transmitting control signal.The direct shadow of the work of huge and complicated electrical system
It rings and arrives train traffic safety.However relay long-term work under high temperature, humidity, vibration environment, aging speed are greatly speeded up, easily
There are the failures such as detent, contact oxidation, eventually leads to dynamic and static head poor contact and even fail.According to statistical analysis, 60% or more
Vehicle trouble be to be caused by relay failure.Track train type is more, control signal is many and diverse, and single-row vehicle is more using relay
Up to 300 or more, and it is associated with train key signal and logic mostly, thus to the letter of its logic control element (LCU)
Number amount, reliability and versatility requirement are higher.There are the defect of contact logic control mode, design one for existing track train
The LCU of kind high reliability and versatility is very necessary.
Summary of the invention
The present invention provides a kind of train logic control element and logic control side on the basis of solving above-mentioned insufficient
Method, the system are designed using hot backup redundancy and fault self-diagnosis, improve the reliability of equipment, while can be flexible according to different demands
Configuration outputs and inputs the quantity of circuit, and it is not necessary to modify system structures, meets versatility of the equipment suitable for disparity items when.
To achieve the goals above, the present invention provides a kind of train logic control elements, including input module, output
The main control module of module and at least two Redundancy Designs；The output end of the input module connects with each main control module respectively
It connects, the output end of each main control module is connect with output module respectively；The input module acquires input direct-current voltage information, hair
Give main control module；The main control module obtains d. c. voltage signal, calculates and generates load driving control signal, through output module
It is sent to load.
Preferably, the input module is set as the input circuit that 2 tunnels are mutually redundant design, and the output module is set as
2 tunnels are mutually redundant the output circuit of design.
Preferably, the input module is set as the input circuit that 4 tunnels are mutually redundant design, and the output module is set as
4 tunnels are mutually redundant the output circuit of design, i.e. the first output circuit, the second output circuit, third output circuit and the 4th are defeated
Circuit out；First series circuit of first output circuit and the second output circuit composition, with third output circuit and the 4th
Second series circuit of output circuit composition is in parallel.
Preferably, the input circuit includes input Acquisition Circuit, and the input Acquisition Circuit includes sequentially connected ratio
Compared with device, serial-parallel conversion circuit and photoelectrical coupler；The comparator "+" input terminal connects DI input port, output end connection
Serial-parallel conversion circuit input terminal；The output end of the serial-parallel conversion circuit connects photoelectrical coupler input terminal, photoelectrical coupler
Output end is connect with main control module；Comparator acquire input direct-current voltage information, exported after being converted by serial-parallel conversion circuit to
Photoelectrical coupler is transmitted to main control module after light-coupled isolation.
Preferably, the input circuit further comprises input self-diagnostic circuit, the input self-diagnostic circuit input terminal
Comparator "-" input terminal is connected, output end connects main control module；The input self-diagnostic circuit is according to preset reference voltage value
Detect the on state of every road DI input port.
Preferably, the output circuit includes ON-OFF control circuit, and the ON-OFF control circuit is designed using passive switch,
Including sequentially connected photoelectrical coupler, MOS driver, metal-oxide-semiconductor field effect transistor and current foldback circuit；Photoelectrical coupler and master
Module connection is controlled, the current foldback circuit output end connects DO output interface；The MOS driver control metal-oxide-semiconductor field effect transistor
Switch state, while detecting the output electric current after metal-oxide-semiconductor field effect transistor closure, overcurrent protection circuit is according to the output electric current of detection
It carries out overcurrent protection and feeds back to main control module for stream information is crossed.
Preferably, the output circuit further comprises output self diagnosis circuit, the output self diagnosis loop input
Metal-oxide-semiconductor field effect transistor output end is connected, output end is connected to main control module through photoelectrical coupler；The output self diagnosis circuit detection
The switch state of the metal-oxide-semiconductor field effect transistor and switching-state information that will test feeds back to main control module.
It preferably, further comprise communication module, the communication module input terminal is separately connected the input terminal of main control module
With output end, output end is connected to train network control system, and main control module is inputted and the data transmission of output to train net
Network control system.
It preferably, further comprise power module, the power module is converted by DC/DC and converts bus supply voltage
It is input module, output module, main control module and communication module power supply for input supply voltage.
A kind of train logic control method, using the train logic control element, comprising the following steps:
S1: acquisition bus supply voltage information, and self diagnosis is carried out in information gathering process；
S2:, which being compared judgement to the bus supply voltage information that redundancy acquires according to self-diagnosis information, and calculates generation bears
Carry driving control signal；
S3: according to load driving control signal control switch closed state and detection output electric current, judge to export electric current
Whether it is more than preset threshold current, is switched if then actively disconnecting, feed back the over-current signal of detection, and carry out output autodiagnosis
It is disconnected；；
S4: output autodiagnosis break signal is compared with load driving control signal, calculates and generates redundancy switching signal.
Preferably, train logic control method further includes the power source bus supply voltage information that will be acquired, load driving
The stream information, self-diagnosis information synchronous transfer to train network control system excessively for controlling signal and feedback, carry out real-time monitoring.
Compared with prior art, the advantages and positive effects of the present invention are:
The present invention provides a kind of train logic control element and logic control method, LCU is corresponding using optocoupler and field
Contactless logic control techniques such as (MOSFET) is managed, hot backup redundancy design, the self-diagnostic function carried by system is, it can be achieved that each
The fault diagnosis and redundancy of redundant circuit switch, and improve the reliability of product；It can be inputted simultaneously according to different demands flexible configuration
With the quantity of output circuit, it is not necessary to modify system structures, meet versatility of the equipment suitable for disparity items when.
(1) present invention can be achieved two and multiply two and take two architecture configurations, further improve the reliability and security of system.It is defeated
Real time self-diagnosis can be carried out by entering module and output module, and diagnostic data is uploaded to train network control system；Export mould
Block has overcurrent protection function, switch can be automatically cut off in output short-circuit or overcurrent, and upload over-current signal, after overcurrent disappears
It can restore automatically；Input module, output module independent design carry external interface, input can be arbitrarily configured according to project demands
Module, output module quantity；External communication interface is abundant, can meet train MVB or Ethernet networking requirement, meet vehicle workshop and set
Standby communication.
Detailed description of the invention
Fig. 1 is the structural topology figure of logic control element (LCU) of the invention；
Fig. 2 is the system structure diagram of one embodiment of the present of invention；
Fig. 3 is the hot backup redundancy design architecture schematic diagram of LCU of the invention；
Fig. 4 multiplies two for the present invention configures two and takes two redundancy structure schematic diagrames.
Fig. 5 is the circuit diagram of input module of the invention；
Fig. 6 is the circuit diagram of output module of the invention.
Specific embodiment
A specific embodiment of the invention is further described below in conjunction with attached drawing.
In the description of the present invention, it is to be understood that, the indicative word such as term " first ", " second ", merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
The present invention provides a kind of train logic control element designed using contactless logic control technique, logic controls
Unit processed uses the contactless logic control technique such as optocoupler and field respective tube (MOSFET), replaces existing relay scheme, leads to
Software logic is crossed, realization directly controls and drive the elements such as train contactor and electric pneumatic valve, completes the various control functions of vehicle.It is right
Than traditional relay mode, contactless logic control element is small in size, high reliablity, logic software are easily modified, can be effective
It reduces operation maintenance cost, reduce vehicle trouble and risk, improve the reliability and overhaul efficiency of vehicle, improve operation and ensure energy
Power has very important function and significance.
Refering to what is shown in Fig. 1, train logic control element includes main control module, input module and output mould in the present invention
Block, communication module and power module；Main control module is connect with input module, output module respectively, communication module and master control mould
Block is in parallel；Input module acquires the DC110V signal of the input equipments such as train button, switch, contactor auxiliary contact, passes through CAN
The information of acquisition is sent to main control module by bus；The information that main control module acquires input module, will after logical operation
The instruction of output is sent to output module by CAN bus；The output module control that main control module exports based on the received refers to
It enables, sends driving signal to the external world and load its work of control；Main control module is inputted the data with output through MVB/ by communication module
Ethernet is sent to train network control system；Power module is converted by DC/DC and is converted to DC110V bus supply voltage
Input supply voltage gives train logic control element each module for power supply.Input module includes two and is mutually redundant the defeated of design
Enter board, output module includes two output board cards for being mutually redundant design, and main control module includes two and is mutually redundant design
Master control board card, power module include two power supply media boards for being mutually redundant design.
In the present embodiment use two Redundancy Designs main control module, i.e., main control module with from control module, main control module with
From control module between communicated, under normal circumstances main control module carry out logic control, redundancy from control module monitors main control module
State be placed in reset state after main control module operation irregularity from control module by main control module, carry out logic control.
Specifically, LCU is designed specifically to two groups of structures of A group and B group and the identical control circuit of function in the present embodiment, ginseng
It examines shown in Fig. 2；A group includes power panel A, master control borad A, input board A and output board A；B group includes power panel B, master control borad B, defeated
Power panel, master control borad, input board and the output board circuit design for entering plate B and output board two sets of software and hardwares of B, A, B are completely the same.
When LCU uses two-node cluster hot backup Redundancy Design, refering to what is shown in Fig. 3, each input card is provided with No. 1 input circuit at this time, i.e., it is defeated
Enter board A and be provided with input circuit A, input card B is provided with input circuit B；Each output board card is provided with 1 tunnel output electricity
Road, i.e. output board card A are provided with output circuit A, and output board card B is provided with output circuit B.I.e. input module is set as 2 at this time
Road is mutually redundant the input circuit of design, and output module is set as the output circuit that 2 tunnels are mutually redundant design；Every road input circuit
It is connect respectively with two master controls, each master control is separately connected two-way output circuit again, i.e., each master control can be defeated with A, B two-way simultaneously
Enter circuit and the communication of A, B two-way output circuit, with reference to shown in Fig. 3.
Meanwhile the present invention can be shown in Fig. 3 hot backup redundancy design basis on, according to system specific requirements, design
Multiply two redundancy structures for taking two for two, i.e., refering to what is shown in Fig. 4, at this point, each input card is provided with No. 2 input circuits, each
Output board card is provided with No. 2 output circuits, is carrying out parallel connection after the two-way output circuit series connection of each output board card.That is, LCU is set
When being calculated as two and multiplying two and take two redundancy structure, input module is set as the input circuit that 4 tunnels are mutually redundant design, i.e. input card
A is provided with input circuit A1, A2, and input card B is provided with input circuit B1, B2；Output module is set as 4 tunnels and is mutually redundant to set
It is (i.e. defeated to be provided with the first output circuit (i.e. output circuit A1), the second output circuit on i.e. output board card A for the output circuit of meter
Circuit A2 out), third output circuit (i.e. output circuit B1) is provided on output board card B and the 4th output circuit (exports
Circuit B2), i.e., each master control can simultaneously with A1, A2, B1, B2 No. tetra- input circuit and A1, A2, B1, B2 two-way output circuit
Communication.First series circuit of output circuit A1 and output circuit A2 composition, with output circuit B1 and output circuit B2 composition
Second series circuit is in parallel.
With further reference to shown in Fig. 2, Fig. 3, Fig. 4, in the present invention in LCU the input terminal of master control borad A and master control borad B with
Input board A is connect with input board B, and output end is with output board A, and output board B connection, i.e. master control A and master control B can receive simultaneously
Input board A and input board B information, and it is sent to output board A and output board B.In LCU normal course of operation, A, B two systems are same
When to work on power state, input signal is acquired simultaneously by two input cards A, B of redundancy, master control A preferentially select and
Input board A and output board A communication, master control B preferentially select to communicate with input board B and output board B, and mainboard carries out logical process
It is exported with logic.After fault diagnosis judges some board or a certain paths failure, can automatically switch to redundancy board and
Redundant channel.For example, master control A preferentially selects input board A to communicate when working normally, when master control A monitors that event occurs for input board A
After barrier, can redundancy switch to input board B and communicated with master control A, similarly, can be between redundancy board when other boards break down
Switching.Master control borad is veneer switching in the present embodiment, and I O board card is the switching of single channel redundancy.Specifically, when system configuration is every
When a input card and output board card are provided only with the hot backup redundancy mode of 1 road input/output circuitry, as shown in Figure 3；At this point, 1
Road input signal carries out letter by the upper each input circuit (input circuit A, input circuit B) all the way of two pieces of input cards A, B of redundancy
Breath acquisition, and the information of acquisition is transmitted to master control A and master control B simultaneously, it can be achieved that the not cross-communication between homologous ray, relatively passes
The independent hot backup redundancy design method of the two systems of system, improves the utilization rate and service life of each module board, improves
The reliability and security of system communication.Meanwhile system can output and input the quantity of circuit according to different demands flexible configuration,
It is not necessary to modify system structures；For example, by the way that the input of 4 tunnels and output circuit is respectively configured, by system configuration be two multiply two take it is two superfluous
Remaining framework, at this point, when each input card and output board card are provided with 2 road input/output circuitry, as shown in figure 4,1 tunnel inputs
Signal carries out information collection by the upper each two-way input circuit of two pieces of input cards A, B of redundancy, i.e. 1 tunnel input signal is defeated by 4 roads
Enter circuit (input circuit A1, A2, B1, B2) to carry out information collection and the information of acquisition is transmitted to master control A and master control B simultaneously,
The cross-communication between not homologous ray, the hot backup redundancy design method of more above-mentioned single channel input and output design, into one can be achieved
Step improves the utilization rate and service life of each module board, improves the reliability and security of system communication.Meanwhile this hair
It is bright to be not limited to the configuration of above-mentioned redundant fashion, it can be according to different demands flexible configuration, when meeting equipment suitable for disparity items
Versatility.
Specifically, Fig. 5 is defeated in the present invention shown in design reference Fig. 2, Fig. 5, Fig. 6 of each module physical circuit of LCU
Enter the circuit diagram of circuit, Fig. 6 is the circuit diagram of output circuit.Each module of system specifically designs as follows:
With further reference to shown in Fig. 2, power panel A powers to A group board, and power panel B powers to B group board.A, B-source plate
External power supply inlet highway be mutually completely independent, independent control switch is distally being set.Communication card is same by power panel A, B
When power, have a power supply that can normally work normally.That is power panel A powers to master control borad A, input board A and output board A, electricity
Source plate B gives master control borad B, input board B and output board B to power.After guaranteeing a power panel failure, system can still maintain to input defeated
Function out.
In addition to power panel, communicated between each board by the isolated can bus of 2 tunnel redundancies inside LCU.All the way
When irrecoverability failure occurs for CAN bus, another way carries out redundancy switching.Synchronization only led to all the way by CAN bus
Letter, when master control borad monitors CAN bus failure, is switched to the CAN communication route of redundancy.
Communication module is responsible for external MVB, Ethernet, two-way CAN communication, host computer interface and maintenance, log recording function.
According to train group-net communication type, input/output signal and autodiagnosis break signal can be sent to train by MVB or Ethernet
Network control system.Since communication module is only responsible for information upload and maintenance writing function, to the control function of logic control element
It can not influence, therefore communication card is designed using nonredundancy in the present embodiment, save product cost.
Main control module is responsible for internal CAN communication scheduling, logical operation, failure logging.System includes two pieces be mutually redundant
Main control module (CPU) when host CPU works normally, is monitored from CPU silence, carries out the scheduling of CAN communication by host CPU and logic is transported
It calculates.Breakdown judge is carried out by hard signal between two pieces of CPU and redundancy switches, totally two kinds of 4 hard signals, a kind of carry out arteries and veins
Life signal transmission is rushed, another kind carries out reset control.When judging host CPU failure from CPU by life signal or CAN data
Afterwards, host CPU is resetted, principal and subordinate's function switch.
Refering to what is shown in Fig. 5, input module is responsible for the acquisition of 110V input signal, each input module includes in the present embodiment
A, two pieces of input cards of B, each input card include 32 tunnels input acquisition channel (DI01~DI032), and each input channel has
Corresponding indicator light.Each board includes independent control chip, and two boards are mutually redundant, and shares an external connector,
It is interconnected by mother daughter board connector.The road Ji Mei input circuit is provided with input Acquisition Circuit and self-diagnostic circuit, input acquisition electricity
Road includes sequentially connected comparator, serial-parallel conversion circuit and photoelectrical coupler, and 32 ratios are specifically provided in the present embodiment
Compared with device, DI input port, "-" input terminal connect self-diagnostic circuit, output end connection all the way for each comparator "+" input terminal connection
Serial-parallel conversion circuit input terminal；The output end of serial-parallel conversion circuit connects photoelectrical coupler input terminal, the output of photoelectrical coupler
End is connect with main control module；Comparator acquires every road 110V input direct-current voltage information, defeated after being converted by serial-parallel conversion circuit
Out to photoelectrical coupler, main control module is transmitted to after light-coupled isolation.It is defeated to input self-diagnostic circuit input terminal connection comparator "-"
Enter end, output end connects main control module, and input self-diagnostic circuit detects every road DI input port according to preset reference voltage value
On state it is every that the detection of low and high level value is exported by comparator by the way that different reference voltage values is arranged in the present embodiment
The on state of road DI input port.The design of above-mentioned input module realizes two input cards of A, B in collection process not
It is disconnected to carry out self diagnosis, and acquisition signal and Self-fault diagnosis signal are uploaded to master control A, B by CAN communication simultaneously, it realizes and hands over
Fork communication, master control A, B are compared judgement to the redundant signals of A, B two-way input circuit, when signal is inconsistent, according to certainly
Troubleshooting signal carries out signal and wins the confidence, and controls the redundancy switching of input circuit.
Refering to what is shown in Fig. 6, each output module includes 2 pieces of output board cards in the present embodiment, each output board card includes only
Vertical control chip, two boards are mutually redundant, and are shared an external connector, are interconnected by mother daughter board connector.Each output
Board includes 16 road DO output channels (DO1~DO16), and each output channel has corresponding indicator light.Every road DO output channel is equal
It is provided with ON-OFF control circuit and output self diagnosis circuit, is designed in the present embodiment using passive switch, ON-OFF control circuit
Including sequentially connected photoelectrical coupler, MOS driver, metal-oxide-semiconductor field effect transistor and current foldback circuit；Photoelectrical coupler and master
Module connection is controlled, current foldback circuit output end connects corresponding DO output interface；It exports self diagnosis loop input and connects MOS
Field-effect tube output end, output end are connected to master control through photoelectrical coupler.After master control receives the information of input module, calculates and generate
Driving control signal is loaded, the MOS driver of 16 road DO output channels, MOS driver control phase are sent to after light-coupled isolation
The closing or opening of metal-oxide-semiconductor field effect transistor is answered, MOS driver detects the output electric current after metal-oxide-semiconductor field effect transistor closure simultaneously, works as detection
When excessive to output electric current (being more than the threshold current value of design), overcurrent protection circuit was carried out according to the output electric current of detection
Stream protection simultaneously feeds back to master control for stream information is crossed.Meanwhile the reality of corresponding output self diagnosis circuit detection metal-oxide-semiconductor field effect transistor
Switch state and the switching-state information that will test feed back to master control, master control by the autodiagnosis break signal of every road DO output channel with it is defeated
After load driving control signal multilevel iudge out, the Self-fault diagnosis information of corresponding output board card is generated.Master control is to A, B two-way
Output circuit redundant signals are compared judgement, when signal is inconsistent, carries out signal according to Self-fault diagnosis information and win the confidence, control
The redundancy of output circuit processed switches.Output module is designed using passive switch in the present embodiment, and metal-oxide-semiconductor field effect transistor carries out switch control
System, driving current can reach 2A, and driving voltage can reach 300V, meet train 24V, 110V varying level driving demand, each logical
Be between road it is non-design altogether it is completely isolated.
The present invention can output and input the wire jumper resistance realization double 2-vote-2 system architecture design of module by configuring.Often
A input/output module is made of the circuit of four sets of independent redundancies, and input module can carry out two and multiply two taking two votings, exports mould
Block carries out series and parallel wiring, avoids the occurrence of single channel and exports the failure that can not be disconnected.Two sets are one group and the independent event of single group configuration
Hinder diagnostic module, fault diagnosis is carried out to group inner panel, further increases system reliability.Input module can be configured to 2 and multiply 2 choosings
2 modes, 1 input signal are acquired by each 2 tunnel Acquisition Circuit on two pieces of input cards of redundancy, and master control board card compares two-by-two
After win the confidence；Output module can be configured to 2 and multiply 2 to select 2 modes, by going here and there again with 2 tunnels of redundancy board after the 2 road DO circuits series connection of veneer
Join DO circuit and carry out parallel connection, 1 input signal is acquired by each 2 tunnel Acquisition Circuit on two pieces of input cards of redundancy, master control
Plate is won the confidence more afterwards two-by-two.
Meanwhile input module and output module are provided with self-diagnostic circuit in the present invention, i.e., input self-diagnostic circuit with
Self-diagnostic circuit is exported, carries out real time self-diagnosis, and diagnostic data is uploaded to TCMS；Output module is with overcurrent protection electricity
Road can automatically cut off switch in output short-circuit or overcurrent, and upload over-current signal, and overcurrent can be restored automatically after disappearing；Input
Module, output module independent design carry external interface, input module, output module number can be arbitrarily configured according to project demands
Amount.System external communication interface is abundant, can meet train MVB or Ethernet networking requirement, and include external 2 tunnel CAN communication, can
Meet the communication of vehicle workshop appliance, reduces train wiring.
The present invention also provides a kind of train logic control methods, using the train logic control of above-described embodiment
Unit, comprising the following steps:
S1: input card acquires bus supply voltage information, and self diagnosis is carried out in information gathering process, and will acquisition
Supply voltage information and self-diagnosis information be transmitted to master control board card；
S2: master control board card compares according to the supply voltage information that redundancy of the self-diagnosis information to 2 input cards acquires
Compared with judgement, the redundancy switching between 2 input cards is controlled；And it calculates generation load driving control signal and is sent to output board
Card；
S3: output board card exports electric current according to reception load driving control signal control switch closed state and detection,
Judge to export whether electric current is more than preset threshold current, if then actively disconnecting switch, feeds back the over-current signal of detection to master
Board is controlled, and carries out output self diagnosis；；
S4: master control board card will export autodiagnosis break signal compared with loading driving control signal, according to output state and overcurrent
State controls the redundancy switching of 2 output board cards；
S5: input card acquisition power source bus supply voltage information, the received output control instruction of output board card and
Feedback cross stream information and input card and the self-diagnosis information of output board card synchronize be sent to train network control system
(TCMS), real-time monitoring is carried out.
LCU of the invention replaces the relay of conventional train using integrated processor and MOSFET semiconductor power switch,
More traditional relay design, more accurately and reliably, troubles diagnosis and fixing is highly efficient and convenient for logic control.Using two-shipper
Hot backup redundancy, working group A and warm back-up group B power on simultaneously and start self-test, and continue to monitor input and output feedback information and
The working condition of detection system；When detect the generation power supply trouble of a certain group of LCU control system, life signal is lost, it is short to export
When the failures such as road/open circuit feedback, relevant abnormal module function is closed, when realizing the automatic switchover of redundant module, and switching not
Influence train operation.Main control module is the switching of veneer entirety redundancy, and input module and output module can realize that single channel redundancy switches,
Further increase the reliability and security of system.System has independent two sets of hardware systems to constitute, and realizes and sets with software cooperation
The automatic switchover of working group when standby itself fail, simultaneity factor carries self diagnosis, and diagnostic data is uploaded in real time
TCMS is realized and is carried out real-time monitoring in the working condition to LCU, and can be stored according to fault diagnosis data by software
With analysis etc..The present invention reduces contact fault using oncontacting point design, and Redundancy Design guarantees that any single point of failure systems can be normal
Work, improves train reliability.System carries diagnostic module, and failure can quickly be judged by diagnostic signal, modularization
Design easy to maintenance, raising train maintenanceability.Meanwhile the quantity of input module, output module can be configured according to different demands,
It is not necessary to modify system structures, meet versatility of the system suitable for disparity items when.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (11)
1. a kind of train logic control element, which is characterized in that including input module, output module and at least two redundancies
The main control module of design；The output end of the input module is connect with each main control module respectively, the output of each main control module
End is connect with output module respectively；The input module acquires input direct-current voltage information, is sent to main control module；The master control
Module obtains d. c. voltage signal, calculates and generates load driving control signal, is sent to load through output module.
2. train logic control element according to claim 1, which is characterized in that the input module is set as 2 tunnels
It is mutually redundant the input circuit of design, the output module is set as the output circuit that 2 tunnels are mutually redundant design.
3. train logic control element according to claim 1, which is characterized in that the input module is set as 4 tunnels
It is mutually redundant the input circuit of design, the output module is set as the output circuit that 4 tunnels are mutually redundant design, i.e., the first output
Circuit, the second output circuit, third output circuit and the 4th output circuit；First output circuit and the second output circuit
First series circuit of composition, it is in parallel with the second series circuit that the 4th output circuit forms with third output circuit.
4. according to the described in any item train logic control elements of claim 2-3, which is characterized in that the input circuit packet
Input Acquisition Circuit is included, the input Acquisition Circuit includes sequentially connected comparator, serial-parallel conversion circuit and photoelectric coupling
Device；The comparator "+" input terminal connects DI input port, and output end connects serial-parallel conversion circuit input terminal；The string simultaneously turns
The output end connection photoelectrical coupler input terminal of circuit is changed, the output end of photoelectrical coupler is connect with main control module；Comparator is adopted
Collect input direct-current voltage information, output is transmitted to after light-coupled isolation to photoelectrical coupler after converting by serial-parallel conversion circuit
Main control module.
5. train logic control element according to claim 4, which is characterized in that the input circuit further comprises
Self-diagnostic circuit is inputted, the input self-diagnostic circuit input terminal connects comparator "-" input terminal, and output end connects master control mould
Block；The input self-diagnostic circuit detects the on state of every road DI input port according to preset reference voltage value.
6. according to train logic control element described in claim 2-3 or 5, which is characterized in that the output circuit includes
ON-OFF control circuit, the ON-OFF control circuit are designed using passive switch, including sequentially connected photoelectrical coupler, MOS drive
Dynamic device, metal-oxide-semiconductor field effect transistor and current foldback circuit；Photoelectrical coupler is connect with main control module, and the current foldback circuit is defeated
Outlet connects DO output interface；The switch state of the MOS driver control metal-oxide-semiconductor field effect transistor, while detecting metal-oxide-semiconductor field effect transistor
Output electric current after closure, overcurrent protection circuit carry out overcurrent protection according to the output electric current of detection and feed back to stream information is crossed
Main control module.
7. train logic control element according to claim 6, which is characterized in that the output circuit further comprises
Self diagnosis circuit is exported, the output self diagnosis loop input connects metal-oxide-semiconductor field effect transistor output end, and output end is through photoelectric coupling
Device is connected to main control module；The switch state of the output self diagnosis circuit detection metal-oxide-semiconductor field effect transistor and the switch shape that will test
State information feeds back to main control module.
8. train logic control element according to claim 1, which is characterized in that it further comprise communication module, institute
Input terminal and output end that communication module input terminal is separately connected main control module are stated, output end is connected to networked control system of the train system
System inputs main control module and the data transmission of output to train network control system.
9. train logic control element according to claim 8, which is characterized in that it further comprise power module, institute
State power module and converted by DC/DC and bus supply voltage is converted into input supply voltage, be input module, output module,
Main control module and communication module power supply.
10. a kind of train logic control method, using train logic control element, feature described in claim 1-9
It is, comprising the following steps:
S1: acquisition bus supply voltage information, and self diagnosis is carried out in information gathering process；
S2:, which being compared judgement to the bus supply voltage information that redundancy acquires according to self-diagnosis information, and calculates generation load drives
Dynamic control signal；
S3: according to load driving control signal control switch closed state and detection output electric current, judge whether export electric current
More than preset threshold current, if then actively disconnecting switch, the over-current signal of detection is fed back, and carry out output self diagnosis；
S4: output autodiagnosis break signal is compared with load driving control signal, calculates and generates redundancy switching signal.
11. train logic control method according to claim 10, which is characterized in that further include the power supply mother that will be acquired
The stream information, self-diagnosis information synchronous transfer to train net excessively of line supply voltage information, load driving control signal and feedback
Network control system carries out real-time monitoring.
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| CN201910161700.1A CN109677468A (en) | 2019-03-04 | 2019-03-04 | Train logic control element and logic control method |
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