CN109849969A - A kind of computer interlock system - Google Patents
A kind of computer interlock system Download PDFInfo
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Abstract
The present invention provides a kind of computer interlock systems, comprising: human-computer interaction layer；Bus, using CAN bus, Ethernet or Ethernet and CAN bus mixed networking topological structure, bus communication protocol uses dynamic dispatching algorithm, is scheduled distribution to message according to the real-time condition of network；Disperse interlocking layer, for realizing interlocking calculation function, dispersion interlocking layer is made of signal corresponding with field device, track switch and the basic interlocking unit of section, human-computer interaction layer is connected with dispersion interlocking layer and its inside by the wireline communication network or bus of redundancy, disperses between interlocking layer and field device to be connected by IO bus；Monitoring system, including rail module, signaling module, track switch module, semiautomatic block module, interlinktrack module and scattered circuit module；And outdoor equipment, including semaphore, track switch and track circuit, it further include the maintenance monitoring subsystem containing workover rig and monitoring machine.
Description
Technical field
The present invention relates to computer field, especially a kind of computer interlock system.
Background technique
Computer interlock system is to be interlocked using Computer Control Technology, computer communication and network technology to signaling at stations
Logical relation concentrates judgement, realizes the long-range control of respectively stand in dispatcher-controlled territory signal, track switch, route, is to guarantee that train is transported safely
Capable infrastructure device makes one of interlocking standard more advanced at present.The interlocking of all-electronin computer is with Computer Control Technology
, using advanced technologies such as computer communication, automatic detections, all electricity are realized based on electronic power switch technology for core
The railway signal control computer interlocking equipment of sonization, all-electronin computer interlock system is mainly by interlocking cabinet, intelligent object
Cabinet and guard system composition.All-electronin computer interlocks reserved safety interlocking bus and network communication interface, is regional interlock
Control provides strong support.
However, existing all-electronin computer interlock system uses centralized control, pass through interlocking machine centralized control institute
Some field devices not only need to establish a large amount of tables of data concentrated and describe complete station signalling arrangement and its correlation,
The also interlocking software of Structure of need complexity handles these tables of data, and complicated interlocking data and software is both difficult to check mistake,
Inconvenient test and safety certification again, seriously affect safety, reliability and the availability of interlock system.Also, if concentrated
The interlocking mechanism of interlock system breaks down, and very big influence will be brought to system, even results in entire station paralysis.
In addition, for normatron interlock system, the communication node and communication number of the interlocking of all-electronin computer
It all increased according to amount, network load can also increase therewith, and impact to the transmission rate of message, therefore to system to communication
Real-time have a higher requirement, and fieldbus, the scheduling mechanism flexibility of such as common CAN bus are low, negative in network
The case where will appear message blocking in heavier situation is carried, therefore the dispatching algorithm of computer interlock system needs to improve, reduced
The probability that message is dropped by obstruction improves the real-time of communication.
Therefore, it is necessary to design a kind of new all-electronin computer interlock system, using distributing control mode and right
It improves and is implanted into the dispatching algorithm of communication, to solve problems of the prior art.
Summary of the invention
To overcome the shortcomings of existing technologies, the purpose of the present invention is to provide a kind of computer interlock systems, by concentration
Interlock is decentralized, that is, designs and transport with the field device interlocking that basic interlocking unit is each responsible for equipment of itself correspondingly
It calculates and driving acquires, scheduling algorithm is improved, reduce message standby probability abandoned due to obstruction, improve the reality of communication
Shi Xing.
The purpose of the present invention is to provide a kind of computer interlock systems, comprising:
Human-computer interaction layer indicates function for realizing operation；
Bus, using CAN bus communication network topology structure, ethernet communication network topological structure or Ethernet and
CAN bus mixed networking topological structure, the bus communication protocol use dynamic dispatching algorithm, the dynamic dispatching algorithm according to
The real-time condition of network is scheduled distribution to message；
Disperse interlocking layer, for realizing interlocking calculation function, the dispersion interlocking layer is by base corresponding with field device
This interlocking unit composition, the basic interlocking unit includes signal, track switch and the basic interlocking unit of section, the human-computer interaction layer
It is connected with inside the dispersion interlocking layer and the dispersion interlocking layer by the wireline communication network or the bus of redundancy, institute
It states and is connected between dispersion interlocking layer and the field device by IO bus；
Monitoring system is railway operation safety monitoring device, can in real time, dynamically, quantitatively be supervised to railway equipment
It surveys, equipment state is acquired, store, play back and is alarmed, maintenance personal can be sent out in time by observing each data trend
Existing incipient fault, transient fault adjust the electrical characteristic of equipment in time and reduce the generation of failure, guarantee that railway being capable of high speed
Safe and punctual operation, including rail module, signaling module, track switch module, semiautomatic block module, interlinktrack module and zero
Dissipate circuit module；And
Outdoor equipment, including semaphore, track switch and track circuit.
Preferably, the dynamic dispatching method is improved EDF dynamic dispatching method, to message by way of index subregion
The opposite off period is divided, and determines priority with this.
Preferably, the improved EDF dynamic dispatching method is that Node distribution formula realizes dispatching method, i.e., does not set in a network
Special node is responsible for dispatching the message that each node is sent, but each node realizes the tune of message according to its inner case
Degree, a buffering queue Q is arranged in the inside of each node in a network, for storing message data and dependent event to be sent
Parameter, by reliable clock synchronization mechanism come uniform time reference between node, to ensure that clock is synchronous, message reaches node
Afterwards, the height of each message priority of intra-node is judged using EDF algorithm, and is successively stored according to the sequence of priority
In buffering queue, when scheduling starts to execute, node selects the highest message of internal priority, its time attribute is passed
Into EDF processing module, dynamic identifier is encoded and obtains, and result return is to be sent to form complete data frame etc.,
When bus transfer starts, which is addressed to bus and participates in arbitration, wherein the improved EDF dynamic dispatching method uses opposite cut-off
The definition of phase Di, i.e. Di=di-tstart, wherein tstartThe time that arbitration starts is indicated, using { di, Di, tin,tstartIndicate
The correlation of message, wherein di is the absolute cutoff phase, which is determined by the off period D of message and enqueue time started, public
Formula is di=D+tin, wherein off period D is able to maintain effective maximum time after representing message enqueue, and wherein Di is opposite cuts
The only phase, as the comparison foundation of scheduling, formula Di=di-tstartIf message is still not sent when reaching the opposite off period,
Think to send failure, then it is assumed that send failure, abandoned or retransmitted.tinFor the enqueue time, which is message entrance
The time of node buffering queue enters system time when queue, t for messagestartTo arbitrate the time started, i.e. bus starts secondary
The time of sanction, improved EDF dynamic dispatching method by the opposite off period according to index variation rule carry out subregion, and by each
Subregion is divided into several subintervals again.The range of first subregion is [0, Dmin], and the range of second subregion is
[Dmin, qDmin], wherein Dmin represents the smallest off period in all message, and q is constant, can be according to the need of not homologous ray
Setting is asked, and qDmin has to be larger than Dmin, therefore q has to be larger than 1.And so on, it can indicate any subregion with i, and hi
Represent index, expression formula hi=i-2 (i >=2), obtaining its indicates range are as follows:
I=1, [0, Dmin]
I >=2, [qhiDmin, qhi+1Dmin]
By above formula it is found that the size of i-th of subregion is qhi+1Dmin-qhiDmin。
Subregion is divided into m subinterval again, then each subinterval length is
Ui=(qhi+1Dmin-qhiDmin)/m=(q-1) qhiDmin/m
By above formula, its priority is obtained by the subregion and subinterval number that calculate certain message.
Preferably, the rail module is divided into 480 type track circuit modules of exchange and 25Hz phase-sensitive track circuits module, institute
It states rail module to be monitored track receiving-end voltage and phase angle, the rail module obtains module from master cpu
Address, and it is transmitted with railway voltage, phase angle, local voltage and the frequency data collected to workover rig.
Preferably, the signaling module checks the work exchange electric current of train signal machine, obtains from master cpu
Module's address, and it is transmitted together with the semaphore current data collected to workover rig.
Preferably, the track switch module includes direct current four-wire system, six line system of direct current, three-phase alternating current five-wire system and three intersections
Flow liquid compacting, electric current, fault current, actuation time and the conversion direction made motor-driven to turn-out track in track switch conversion process are supervised
It surveys, the track switch module obtains module's address from master cpu, switch starting stops, positioning antiposition information, and by itself and acquisition
Obtained action current data are transmitted to workover rig.
Preferably, the monitoring system integration passes through dsp chip, sensor and related conditioning inside execution unit
Circuit works, and completes the monitoring function to master cpu state, and be acquired to each analog information, operation, passes through CAN
These analog quantitys are sent to workover rig by bus, are analyzed by workover rig and are shown.
Preferably, the basic interlocking unit includes an interlocking host, the monitoring host computer of two two-node cluster hot backups and control
Platform, completes the interlock logic calculation function at all stations in region within the jurisdiction, and the interlocking host is with the total knot of standard network
The two-node cluster hot backup of structure, two from three are fault-tolerant or two multiply two and take two types.
Preferably, the basic interlocking unit of the signal uses the LED light signal of DC16V as controlled device, using five
Show home signal, the basic interlocking unit of semaphore uses " 2 take 2 " Safe Redundant Architecture, and when normal work, only principal and subordinate is micro-
The control command of processor is consistent, could issue control command driving signal machine, the basic interlocking unit hardware configuration of signal
Including ethernet communication circuit, MCU circuit, indicating circuit, signal drive circuit, Acquisition Circuit, principal and subordinate's comparison circuit,
In, because of its technology maturation preferred circuit can be used, principal and subordinate's comparison circuit is realized using CPLD in MCU circuit and indicating circuit；Institute
Stating the basic interlocking unit of track switch is every group of track switch place in interlocking area AT STATION, requires that a goat is arranged to convert
Trouble, locking track switch and reflection switch location and state, using ZD6 type electric point machine, control circuit be divided into start-up circuit and
Indication circuit two parts, start-up circuit refers to the circuit of driving electric point machine movement, and indication circuit is that switch location is anti-
Reflect to interlocking machine and control and display machine, the basic interlocking unit hardware of track switch using two take two redundancy structure, two panels MCU is only
Interlock logic operation is on the spot carried out, and result is exported and is responsible for voting to CPLD, CPLD, provides correspondence after operation result is consistent
Control command, drive corresponding circuit to complete track switch control, the basic interlocking unit hardware configuration of track switch includes Ethernet
Telecommunication circuit, MCU circuit, CPLD voting circuit, Locating driver circuit, reaction driving circuit, fixed/antiposition detection circuit and track switch
Current collection circuit；The zone detection circuit includes input circuit, input conditioning circuit, microcontroller circuit, in order to guarantee
Safety checks that circuit takes two mechanisms using two, using two panels MCU and two sets of independent input conditioning circuits, to track condition into
Row acquisition and judgement, just think that track condition is reliable after two panels MCU judges that structure is consistent, then carry out interlock logic operation and upper
It is transmitted to control and display machine.
Preferably, further include maintenance monitoring subsystem, including workover rig and monitoring machine, there is yard graphical display, vehicle to be engaged in
Operation note, historical data playback function.
Beneficial effects of the present invention: computer interlock system is one-to-one by the basic interlocking unit being made of electronic module
Driving acquisition is carried out to outdoor equipment and interlocking is handled, and complete vehicle by multiple basic co-operating modes of interlocking unit
It stands the interlocked control process of signal, instead of the centralized interlocking mechanism and relay execution circuit of existing computer interlock system,
Disperse the interlock of centralized interlocking, reduces the complexity of interlocking software and data, structure is simple, flexibility is big, reliability
It is high.Its technological progress is shown:
(1) scale and complexity of interlocking software and its data are significantly reduced；
(2) engineering design and construction difficulty is greatly reduced, avoids and is also required to again even if small-scale yard reorganization and expansion
Wasted caused by overall design and construction；
(3) influence of the dispersion local fault to whole system, to overcome the shortcomings that concentrating of controlling risk；
(4) possibility is provided for fiber optic communication, avoids the use of a large amount of optical cables, save the cost；
(5) data processing amount is significantly increased, and systematically reliability, safety and availability improve.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.Target and feature of the invention will be apparent from view of following description taken together with the accompanying drawings,
In attached drawing:
Attached drawing 1 is the computer interlock system structure chart according to the embodiment of the present invention；
Attached drawing 2 is the execution unit overall construction drawing according to the embodiment of the present invention；
Attached drawing 3 is using single CAN bus according to the embodiment of the present invention as communication bus structure figure；
Attached drawing 4 is according to the communication network architecture for constructing interlock system using single Ethernet of the embodiment of the present invention
Figure；
Attached drawing 5 is the communication network that system is constructed using CAN bus and Ethernet hybrid mode according to the embodiment of the present invention
Network structure chart；
Attached drawing 6 is the basic interlocking unit general hardware structure chart of signal according to the embodiment of the present invention；
Attached drawing 7 is the basic interlocking unit general hardware structure chart of track switch according to the embodiment of the present invention；
Attached drawing 8 is the zone detection circuit hardware schematic diagram according to the embodiment of the present invention；
Attached drawing 9 is the EDF dynamic dispatching method scheduling mechanism schematic diagram according to the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of computer interlock system structure chart, comprising:
Human-computer interaction layer indicates function for realizing operation；
Bus, using CAN bus communication network topology structure, ethernet communication network topological structure or Ethernet and
CAN bus mixed networking topological structure, the bus communication protocol use dynamic dispatching algorithm；Each node needs altogether in network
The resource for enjoying system needs to carry out Real-Time Scheduling to network, so as to Internet resources are distributed to greatest extent to each node,
Bandwidth availability ratio is improved, the message of each node in network is reasonably dispatched, dynamic dispatching algorithm is according to network
Real-time condition distribution is scheduled to message, system has higher flexibility and network utilization, and the present embodiment uses EDF
Dynamic dispatching method divides the opposite off period of message by way of index subregion, determines priority with this.
Disperse interlocking layer, for realizing interlocking calculation function, the dispersion interlocking layer is by base corresponding with field device
This interlocking unit composition, the basic interlocking unit includes signal, track switch and the basic interlocking unit of section, the human-computer interaction layer
It is connected with inside the dispersion interlocking layer and the dispersion interlocking layer by the wireline communication network or the bus of redundancy, institute
It states and is connected between dispersion interlocking layer and the field device by IO bus；
Monitoring system is railway operation safety monitoring device, can in real time, dynamically, quantitatively be supervised to railway equipment
It surveys, equipment state is acquired, store, play back and is alarmed, maintenance personal can be sent out in time by observing each data trend
Existing incipient fault, transient fault adjust the electrical characteristic of equipment in time and reduce the generation of failure, guarantee that railway being capable of high speed
Safe and punctual operation, including rail module, signaling module, track switch module, semiautomatic block module, interlinktrack module and zero
Dissipate circuit module；And
Outdoor equipment, including semaphore, track switch and track circuit.
In Fig. 1, XCI1~XCIn is the basic interlocking unit of signal, and DCI1~DCIn is the basic interlocking unit of track switch, QCI1
~QCIn is the basic interlocking unit of track section.
Rail module is divided into 480 type track circuit modules of exchange and 25Hz phase-sensitive track circuits module, the rail module
Track receiving-end voltage and phase angle are monitored, the rail module obtains module's address from master cpu, and by its
It transmits with railway voltage, phase angle, local voltage and the frequency data collected to workover rig.
Signaling module checks the work exchange electric current of train signal machine, and module's address is obtained from master cpu, and
It is transmitted together with the semaphore current data collected to workover rig.
Track switch module includes direct current four-wire system, six line system of direct current, three-phase alternating current five-wire system and the hydraulic system of three-phase alternating current, right
Motor-driven electric current, fault current, actuation time and the conversion direction made of turn-out track is monitored in track switch conversion process, track switch module from
Module's address is obtained in master cpu, switch starting stops, positioning antiposition information, and by itself and the action current number that collects
According to transmitting to workover rig.
Execution unit overall construction drawing referring to fig. 2, the monitoring system integration inside execution unit, by dsp chip,
Sensor and related conditioning circuit work, and complete the monitoring function to master cpu state, and carry out to each analog information
These analog quantitys are sent to workover rig by CAN bus, are analyzed by workover rig and shown by acquisition, operation.
Referring to Fig. 3, using single CAN bus as communication bus, node in CAN bus can normal communication, energy
Enough meet the communicating requirement of distributing interlock system, but the node that CAN bus is supported is limited, at most supports 110 nodes, and
And increasing with node, communication network is more unstable.In big yard, field device is more, needs a plurality of independent CAN total
Line could connect all basic interlocking units of equipment in a network, and the communication between different CAN bus is needed through other hardware
Or software is realized, such as extends carry number of nodes using the cascade mode of CAN bus.Two layers of CAN bus is only depicted in Fig. 3
Cascade mode, according to field device quantity, flexible modulation carry mode in practical yard, and it is each that optical fiber connection can be used
A equipment.
Referring to fig. 4, the communication network of interlock system is constructed using single Ethernet, ethernet communication also faces node
Limited problem, Ethernet cannot can share a transfer bus as CAN bus, and each node requires independent logical
Believe route, the communication between node is realized by interchanger, carry number of nodes is extended by the way of switch concatenation,
Meet more device node demands in interlock system.
One Ethernet is increased using the communication network of CAN bus and Ethernet hybrid mode building system referring to Fig. 5
Turn the equipment of CAN, i.e. gateway, all gateways at communication network, pass through CAN bus under each gateway by group of switches again
The basic interlocking unit of field equipment connecting, the topological structure can be coupled structure to avoid multi-layer, reduce network communication equipment.
Basic interlocking unit includes the monitoring host computer and console of an interlocking host, two two-node cluster hot backups, is completed administrative
The interlock logic calculation function at all stations in region, the interlocking host are the dual-locomotive heat with standard network bus structures
Standby, two from three is fault-tolerant or two multiply two and take two types.
Wherein, referring to the basic interlocking unit general hardware structure chart of Fig. 6 signal, the LED light signal of DC16V is selected to make
For controlled device, using five display home signals, the basic interlocking unit of semaphore uses " 2 take 2 " Safe Redundant Architecture, normally
When work, the control command of only principal and subordinate's microprocessor is consistent, could issue control command driving signal machine.Signal interlocks substantially
Mainly have in unit hardware structure ethernet communication circuit, MCU circuit, indicating circuit, signal drive circuit, Acquisition Circuit,
Principal and subordinate's comparison circuit etc., wherein preferred circuit, principal and subordinate's comparison circuit can be used because of its technology maturation in MCU circuit and indicating circuit
It is realized using CPLD.
Referring to the basic interlocking unit general hardware structure chart of Fig. 7 track switch, AT STATION at every group of track switch in interlocking area, all need
One goat is set to convert track switch, locking track switch and reflection switch location and state, using ZD6 type electric point machine,
Its control circuit is divided into start-up circuit and indication circuit two parts, and start-up circuit refers to the circuit of driving electric point machine movement,
And indication circuit is that switch location is reflected to interlocking machine and control and display machine.X1 is location control and expression interface, X2 in figure
Control and indicate that interface, X3 are that antiposition indicates that loop line interface, X4 are control Special back line interface for antiposition, X5 returns for normal indication
Line interface.The basic interlocking unit hardware of track switch using two take two redundancy structure, two panels MCU independently carries out interlock logic fortune
It calculates, and result is exported and is responsible for voting to CPLD, CPLD, corresponding control command is provided after operation result is consistent, drive phase
The circuit answered completes track switch control.The basic interlocking unit hardware configuration of track switch mainly have ethernet communication circuit, MCU circuit,
CPLD voting circuit, Locating driver circuit, reaction driving circuit, fixed/antiposition detection circuit and Switch current Acquisition Circuit.
Referring to Fig. 8, zone detection circuit hardware schematic diagram, which includes input circuit, input conditioning circuit, microcontroller
Device circuit checks that circuit takes two mechanisms using two to guarantee safety, improves electricity using two panels MCU and two sets of independent inputs
Road is acquired track condition and judges, just thinks that track condition is reliable after two panels MCU judges that structure is consistent, then carry out
Interlock logic operation and it is uploaded to control and display machine.
Further include maintenance monitoring subsystem, including workover rig and monitoring machine, there is yard graphical display, vehicle business operation note
Record, historical data playback function.
EDF dynamic dispatching method scheduling mechanism is as shown in figure 9, dynamic dispatching method is that Node distribution formula realizes dispatching method, i.e.,
It does not set special node in a network to be responsible for dispatching the message that each node is sent, but each node is according to its inner case reality
The scheduling of existing message.A buffering queue Q is arranged in the inside of each node in a network, for storing message data to be sent
With dependent event parameter, by reliable clock synchronization mechanism come uniform time reference between node, to ensure that clock is synchronous.Message
After reaching node, the height of each message priority of intra-node is judged using EDF algorithm, and according to the sequence of priority
It is sequentially stored in buffering queue, when scheduling starts to execute, node selects the highest message of internal priority, will at that time
Between attribute reach in EDF processing module, encode and obtain dynamic identifier, and result is returned to form complete data frame etc.
To be sent, when bus transfer starts, which is addressed to bus and participates in arbitration.
Since the absolute cutoff phase di of message is attached on system operation time, so as system uses the time
Increase, the absolute cutoff phase can become increasing, it will lead to not encode priority using identifier, therefore use phase
Definition to off period Di, i.e. Di=di-tstart, wherein tstartIndicate the time that arbitration starts, this way can effectively subtract
The digit of few priority.The present embodiment uses { di, Di, tin,tstartIndicate message correlation, wherein di be absolute cutoff
Phase, the value pass through the off period D of message and the decision of enqueue time started, formula di=D+tin, wherein off period D is represented and is disappeared
It is able to maintain effective maximum time, generally millisecond rank after breath enqueue, the real-time higher message value is smaller, usually
This value artificially determines.Di is the opposite off period, is the central factor of algorithm, is the comparison foundation of scheduling, formula Di=di-
tstartIf message is still not sent when reaching the opposite off period, then it is assumed that send failure, then it is assumed that send failure, abandoned
Or it retransmits.tinFor the enqueue time, which is the time that message enters node buffering queue, when entering queue for message
System time, tstartTo arbitrate the time started, i.e., bus starts the time arbitrated.EDF dispatching algorithm do not use to the off period into
The mode of the average subregion of row determines that priority, this method increase quantization error, will lead to information occlusion, but opposite will cut
Only the phase carries out subregion according to the rule of index variation, and each subregion is divided into several subintervals again.The first point
The range in area is [0, Dmin], and the range of second subregion is [Dmin, qDmin], and wherein Dmin represents minimum in all message
Off period, q is constant, can be set according to the demand of not homologous ray, and qDmin has to be larger than Dmin, therefore q has to be larger than 1.
And so on, it can indicate any subregion with i, and hi represents index, expression formula hi=i-2 (i >=2), obtain its expression
Range are as follows:
I=1, [0, Dmin]
I >=2, [qhiDmin, qhi+1Dmin]
By above formula it is found that the size of i-th of subregion is qhi+1Dmin-qhiDmin。
Subregion is divided into m subinterval again, then each subinterval length is
Ui=(qhi+1Dmin-qhiDmin)/m=(q-1) qhiDmin/m
By above formula, its priority is obtained by the subregion and subinterval number that calculate certain message.
In the present embodiment, if the absolute cutoff phase of certain message a is Da, calculate shown in steps are as follows:
1, subregion where the opposite off period Da by calculating message a, the segment number of subregion where releasing Da.
Pass through formula qhiDmin≤Da≤qhi+1It is as follows to obtain partition number by Dmin:
Logq(Da/Dmin) -1 < hi≤Logq(Da/Dmin)
2, according to obtained partition number, the sub-district segment number of subregion described in Da is calculated, wherein Ug is sub-district segment length, k=
([Da-qhiDmin]/g)+1
3, by having calculated the partition number and sub-district segment number of acquisition, it can be deduced that the priority of message a is p=k+hi*m.
4, by the priority p being calculated according to Sequential Mapping from small to large to the position of identifier dynamic segment, the value of p
Smaller, the priority for representing message is higher, and corresponding identifier dynamic segment encoded radio is smaller, and the position not used abandons locating
Reason.
Although the present invention is described by reference to specific illustrative embodiments, these embodiments are not will receive
Restriction and only limited by accessory claim.It should be understood by those skilled in the art that can be without departing from of the invention
Change and modification are able to carry out to the embodiment of the present invention in the case where protection scope and spirit.
Claims (10)
1. a kind of computer interlock system, characterized by comprising:
Human-computer interaction layer indicates function for realizing operation；
Bus, it is total using CAN bus communication network topology structure, ethernet communication network topological structure or Ethernet and CAN
Line mixed networking topological structure, the bus communication protocol use dynamic dispatching algorithm, and the dynamic dispatching algorithm is according to network
Real-time condition distribution is scheduled to message；
Disperse interlocking layer, for realizing interlocking calculation function, the dispersion interlocking layer is by corresponding with field device basic
Lock unit composition, the basic interlocking unit includes signal, track switch and the basic interlocking unit of section, the human-computer interaction layer and institute
It states and is connected inside dispersion interlocking layer and the dispersion interlocking layer by the wireline communication network of redundancy or the bus, described point
It dissipates and is connected between interlocking layer and the field device by IO bus；
Monitoring system is railway operation safety monitoring device, can in real time, dynamically, be quantitatively monitored to railway equipment, right
Equipment state is acquired, stores, plays back and alarms, and maintenance personal can have found to dive in time by observing each data trend
In failure, transient fault, the electrical characteristic of equipment is adjusted in time and reduces the generation of failure, guarantees that railway being capable of high-speed secure
Running on time, including rail module, signaling module, track switch module, semiautomatic block module, interlinktrack module and scattered electricity
Road module；And
Outdoor equipment, including semaphore, track switch and track circuit.
2. a kind of computer interlock system according to claim 1, it is characterised in that: the dynamic dispatching method is improved
EDF dynamic dispatching method divides the opposite off period of message by way of index subregion, determines priority with this.
3. a kind of computer interlock system according to claim 2, it is characterised in that: the improved EDF dynamic dispatching
Method is that Node distribution formula realizes dispatching method, i.e., does not set special node in a network and be responsible for dispatching disappearing for each node transmission
Breath, but each node realizes the scheduling of message according to its inner case, the inside of each node is arranged one and delays in a network
Rush queue Q, for storing message data and dependent event parameter to be sent, between node by reliable clock synchronization mechanism come
Uniform time reference after message reaches node, judges that each message of intra-node is excellent using EDF algorithm to ensure that clock is synchronous
The height of first grade, and be sequentially stored in buffering queue according to the sequence of priority, when scheduling starts to execute, node
The highest message of internal priority is selected, its time attribute is reached in EDF processing module, encodes and obtains dynamic marks
Symbol, and result return is to be sent to form complete data frame etc., and when bus transfer starts, it is secondary which is addressed to bus participation
It cuts out, wherein definition of the improved EDF dynamic dispatching method using opposite off period Di, i.e. Di=di-tstart, wherein
Tstart indicates the time that arbitration starts, and the correlation of message is indicated using { di, Di, tin, tstart }, wherein di is absolute
Off period, which passes through the off period D of message and the enqueue time started determines, formula di=D+tin, wherein off period D
It is able to maintain effective maximum time after representing message enqueue, wherein Di is the opposite off period, as the comparison foundation of scheduling,
Formula is Di=di-tstart, if message is still not sent when reaching the opposite off period, then it is assumed that sends failure, then it is assumed that hair
Failure is sent, is abandoned or is retransmitted.Tin is the enqueue time, which is the time that message enters node buffering queue, is
Message enters system time when queue, and tstart is the arbitration time started, i.e. bus starts the time arbitrated, improved EDF
The opposite off period is carried out subregion according to the rule of index variation by dynamic dispatching method, and each subregion is divided into again several
A subinterval.The range of first subregion is [0, Dmin], and the range of second subregion is [Dmin, qDmin], wherein Dmin generation
The smallest off period in all message of table, q are constant, can be set according to the demand of not homologous ray, and qDmin has to be larger than
Dmin, therefore q has to be larger than 1.And so on, it can any subregion is indicated with i, and hi represents index, expression formula hi=i-2
(i >=2), obtaining it indicates range are as follows:
I=1, [0, Dmin]
I >=2, [qhiDmin, qhi+1Dmin]
By above formula it is found that the size of i-th of subregion is qhi+1Dmin-qhiDmin.
Subregion is divided into m subinterval again, then each subinterval length is
Ui=(qhi+1Dmin-qhiDmin)/m=(q-1) qhiDmin/m
By above formula, its priority is obtained by the subregion and subinterval number that calculate certain message.
4. a kind of computer interlock system according to claim 1, it is characterised in that: the rail module is divided into exchange
480 type track circuit modules and 25Hz phase-sensitive track circuits module, the rail module is to track receiving-end voltage and phase
Angle is monitored, and the rail module obtains module's address from master cpu, and by its with collect railway voltage, phase
Angle, local voltage and frequency data are transmitted to workover rig.
5. a kind of computer interlock system according to claim 1, it is characterised in that: the signaling module is to train signal
The work exchange electric current of machine checked, obtains module's address from master cpu, and by itself and the semaphore electric current that collects
Data are transmitted together to workover rig.
6. a kind of computer interlock system according to claim 1, it is characterised in that: the track switch module includes direct current four
Line system, six line system of direct current, three-phase alternating current five-wire system and the hydraulic system of three-phase alternating current, to the motor-driven work electricity of turn-out track in track switch conversion process
Stream, fault current, actuation time and conversion direction are monitored, the track switch module obtained from master cpu module's address,
Switch starting stops, positioning antiposition information, and it is transmitted with the action current data collected to workover rig.
7. a kind of computer interlock system according to claim 1, it is characterised in that: the monitoring system integration is executing
Inside unit, is worked by dsp chip, sensor and related conditioning circuit, complete the monitoring function to master cpu state
Can, and each analog information is acquired, operation, these analog quantitys are sent to by workover rig by CAN bus, by workover rig point
It analyses and shows.
8. a kind of computer interlock system according to claim 1, it is characterised in that: the basic interlocking unit includes one
Platform interlocks the monitoring host computer and console of host, two two-node cluster hot backups, completes the interlock logic fortune at all stations in region within the jurisdiction
Calculate function, the interlocking host is that two-node cluster hot backup with standard network bus structures, two from three are fault-tolerant or two multiply two and take two classes
Type.
9. a kind of computer interlock system according to claim 1, it is characterised in that: the basic interlocking unit of signal is used
The LED light signal of DC16V is as controlled device, and using five display home signals, the basic interlocking unit of semaphore is used
" 2 take 2 " Safe Redundant Architecture, when normal work, the control command of only principal and subordinate's microprocessor is consistent, could issue control command
Driving signal machine, the basic interlocking unit hardware configuration of signal includes ethernet communication circuit, MCU circuit, indicating circuit, letter
Number drive circuit, Acquisition Circuit, principal and subordinate's comparison circuit, wherein MCU circuit and indicating circuit can be used because of its technology maturation
Preferred circuit, principal and subordinate's comparison circuit are realized using CPLD；The basic interlocking unit of track switch is every in interlocking area AT STATION
At group track switch, one goat of setting is required to convert track switch, locking track switch and reflection switch location and state, using ZD6
Type electric point machine, control circuit are divided into start-up circuit and indication circuit two parts, and start-up circuit refers to the electronic turn-out track of driving
The circuit of motor-driven work, and indication circuit is switch location to be reflected to interlocking machine and control and display machine, the track switch interlocks substantially
Unit hardware using two take two redundancy structure, two panels MCU independently carries out interlock logic operation, and by result export to
CPLD, CPLD are responsible for voting, and corresponding control command is provided after operation result is consistent, and corresponding circuit is driven to complete track switch control
System, the basic interlocking unit hardware configuration of track switch include ethernet communication circuit, MCU circuit, CPLD voting circuit, positioning drive
Dynamic circuit, reaction driving circuit, fixed/antiposition detection circuit and Switch current Acquisition Circuit；The zone detection circuit includes defeated
Enter circuit, input conditioning circuit, microcontroller circuit, in order to guarantee safety, checks that circuit takes two mechanisms using two, using two panels
MCU and two set of independent input conditioning circuit, is acquired track condition and judges, after two panels MCU judges that structure is consistent
Just think that track condition is reliable, then carries out interlock logic operation and be uploaded to control and display machine.
10. a kind of computer interlock system according to claim 1, it is characterised in that: it further include maintenance monitoring subsystem,
Including workover rig and monitoring machine, there is yard graphical display, vehicle business operation note, historical data playback function.
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