CN105000007B - A kind of anti-skidding control device for urban rail braking system - Google Patents
A kind of anti-skidding control device for urban rail braking system Download PDFInfo
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- CN105000007B CN105000007B CN201510449535.1A CN201510449535A CN105000007B CN 105000007 B CN105000007 B CN 105000007B CN 201510449535 A CN201510449535 A CN 201510449535A CN 105000007 B CN105000007 B CN 105000007B
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- signal
- skidding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
- B60T8/1761—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3235—Systems specially adapted for rail vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
- B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
Abstract
The present invention discloses a kind of anti-skidding control device for urban rail braking system, including：Main control module, for receiving the speed signal and braking instruction of axle, corresponding valve drive signal, control signal, the life signal whether abnormal for representing operation are generated, exports and gives antiskid valve drive module, and the operating status of antiskid valve drive module is judged according to feedback signal；Antiskid valve drive module; for Anti-slip regulation valve; including sequentially connected valve driving unit, air bleeding valve protection location and relay control unit, valve driving unit receives valve drive signal Anti-slip regulation valve and sends feedback signal, and air bleeding valve protection location exports anti-skidding fail safe trigger signal；Relay control unit control relay obtains electricity condition, and sends feedback signal.The present invention has the advantages that simple and compact for structure, anti-sliding control reliability and safe, control flexibly and can realize fault monitoring and positioning.
Description
Technical field
The present invention relates to urban rail braking technology field, more particularly to a kind of anti-sliding control for urban rail braking system to fill
Put.
Background technology
With the quickening of urbanization process, more and more people are seeking more convenient, more environmentally friendly trip mode, city
City's track traffic with many advantages, such as convenient and efficient, environmentally protective due to being favored.The operation of city national highway train has
Not in main line railway vehicle, it needs frequently startup, speed governing, braking, this just proposes more the performance of motor vehicle braking system
High requirement.To adapt to the real needs of resource-efficient and environment friendly society construction, urban rail transit vehicles are adopted
Utilization electric braking as maximum as possible is needed with braking system is obtained so that certain economy can be produced by the recycling of energy
Benefit, and the mechanical wear of brake shoe can be reduced and reduce the influence to environment.The characteristics of to adapt to short distance start and stop car, train must
Must start that fast, braking distance is short, this requires brake system device has operation flexible, response is rapid, parking is steady, it is accurate and
The features such as brake force is big.City railway vehicle is dynamic, trailer marshaling, it requires the braking of each vehicle of marshaling to overcome
May be consistent, and can adapt to the change of train passenger amount, that is, there is the empty, regulatory function of loaded vehicle, during reducing train braking
The impact of collision of train.Urban rail braking control system is using accident failure to the safe side as design principle, and is provided for operation abundant
Safety guarantee.
Urban rail braking system using electric braking and air damping and braking system (the micro-processor controlled electricity sky of electrical command
Composite braking), i.e., mixing control is carried out to air damping and electric braking.Electric braking uses regenerative braking or resistive braking, air
Braking uses the micro-processor controlled through type electric control braking of electrical command.Urban rail braking control system mainly by braking control system,
Foundation brake system and air supply system three parts composition.
Braking control system includes brake control, brake signal generating and brake signal transmitting device, wherein
Brake control is the common control equipment for receiving braking instruction, realizing braking force control, has been internally integrated control for brake list
First (Brake Control Unit, BCU), air valve class component etc.；Brake signal generating is driver controller；Braking
Recoil simulator includes central means and vehicle termination device, braking instruction is transmitted for gathering, by means of networked control system of the train system
System receives on-position instruction.Air supply system is by air compressor, drier and air compressor machine start-up and shut-down control device, total wind
Cylinder, control air cylinder, the blast main through full car and cock etc. form, and compressed air are provided for braking system, as air damping
Power source.Foundation brake system is made of checking cylinder and brake shoe or brake disc etc., receives the control instruction controlled by BCU, production
Raw corresponding brake force.Air slides control and can be acted with the system coordination of electric braking sliding brake function, can make what is slided
Wheel recovers to adhere as early as possible.Whether air, which slides control and judge to produce during air damping according to shaft speed signal, slides and sharp
Anti-sliding control is carried out with antiskid valve.Anti-sliding control is to reduce brake force when brake force will exceed adhesion, makes wheel extensive
Multiple rolling or creep state, avoid wheel sliding.
Anti-sliding control is illustrated in fig. 1 shown below in urban rail braking system, and anti-sliding control module is by gathering No. 4 velocity sensors
Shaft speed signal carries out anti-skidding judgement, independent 4 groups of antiskid valves (pressure retaining valve, air bleeding valve) is controlled, in braking procedure not
Wheel can occur to abrading event, usually require that anti-skidding efficiency is not less than 75%.Antiskid control system is used when judging to slide
Many criterions, these criterions mainly have speed difference, deceleration, deceleration differential and slip rate etc..The side of speed difference and deceleration
Method is using commonplace, as shown in Fig. 2, by anti-skid controller according to the change of speed difference, deceleration etc., correspondingly control braking
Power changes to avoid wheel sliding.But no matter any criterion is used, be all to be sticked together anti-skidding with making full use of as main mesh
's.
In urban rail braking control system, the overall principle of fault-safety principle is：
When train traction operation or coasting, the principle of braking system faults failure to the safe side is to avoid producing undesirable system
Power, so that train is able to maintain that operation；When train braking stops, the principle of braking system faults failure to the safe side is to ensure that
There is enough brake force, it is ensured that train being capable of emergency；When air damping slide protective thrashing or failure, air system
It is dynamic will maintain with and without slide protective.
Ensureing the major measure of fault-safety principle includes：
Using it is normal when band independent emergency braking security loop electrically, once dead electricity, train implements urgent system automatically
Dynamic, i.e. emergency braking is " dead electricity braking "；Using the service braking control model of " dead electricity alleviation ", work as electronic brake control unit
During dead electricity, service braking is in relieved state；Using the monitoring brake monitor for having safe condition；Using the prison for having safe condition
Control anti-skid controller；Braking deficiency detection；Do not alleviate detection and force alleviation；Ensure safe parts redundant and failure function drop
Level measure.
By above-mentioned requirements, control function, anti-skidding function for monitoring and anti-skidding fail safe are directed in urban rail antiskid control system
Funtion part all needs possess high reliability, if anti-sliding control exception occurs in anti-sliding control module, may cause air system
Power is persistently reduced or even disappeared, so as to influence vehicle safety.It is anti-skidding fail safe in current antiskid control system, anti-skidding
The functional circuits such as valve driving are generally independent of one another, and each circuit is built by discrete device to be formed, and circuit structure is complicated, is not easy to be controlled
System, and each functional circuit can not achieve flexible self-test, safety and reliability be not high；When a failure occurs, can not also realize
The positioning of trouble point, is unfavorable for maintenance and maintenance of field device etc..
The content of the invention
The technical problem to be solved in the present invention is that：For technical problem existing in the prior art, the present invention provides one
Plant simple and compact for structure, of low cost, anti-sliding control reliability and safe, control flexibly and can realize fault monitoring
And the anti-skidding control device for urban rail braking system of positioning.
In order to solve the above technical problems, technical solution proposed by the present invention is：
A kind of anti-skidding control device for urban rail braking system, including：
Main control module, for receiving the speed signal and braking instruction of axle, generates corresponding valve drive signal, control
Signal processed and the life signal whether abnormal for representing operation, export and give antiskid valve drive module, and according to feedback letter
Number judge the operating status of the antiskid valve drive module；
Antiskid valve drive module, for Anti-slip regulation valve, including sequentially connected valve driving unit, air bleeding valve protection location
And relay control unit, the valve driving unit receive the valve drive signal Anti-slip regulation valve and send feedback signal,
Driving condition, control signal control output anti-skidding fail safe triggering letter of the air bleeding valve protection location according to air bleeding valve
Number；The relay control unit according to the anti-skidding fail safe trigger signal, control signal and life signal control after
Electric appliance obtains electricity condition, and sends feedback signal.
As a further improvement on the present invention：The main control module further includes valve drive signal control and protection unit, institute
State valve drive signal control and protection unit and control exhaust valve drive signal and pressurize valve drive signal in the valve drive signal
State meets default protective condition.
As a further improvement on the present invention：The air bleeding valve protection location includes the output monitoring of sequentially connected air bleeding valve
Circuit and protection circuit, the input terminal of the air bleeding valve output monitoring circuit connect the valve driving unit, the protection electricity
The output terminal on road connects the relay control unit；The driving condition of the air bleeding valve output monitoring circuit monitoring air bleeding valve is simultaneously
The control signal is received, the driving condition result and the control signal obtained according to monitoring, control starts the protection
The anti-skidding fail safe trigger signal of circuit output.
As a further improvement on the present invention：The protection circuit includes sequentially connected OR circuit, delay sub-circuit
And sub-circuit is kept, the driving shape that the OR circuit accesses the control signal, air bleeding valve output monitoring circuit monitors
State as a result, carry out or computing after output protection control signal；The delay sub-circuit is issued in the protection control signal control
Sending trigger signal, after the holding sub-circuit receives trigger signal, the anti-skidding failure of control output is protected to the holding sub-circuit
Shield trigger signal simultaneously keeps preset duration.
As a further improvement on the present invention：The valve driving unit includes virtual protection circuit, isolation circuit, pressure retaining valve
Drive circuit and exhaust valve-driving circuit, the virtual protection circuit connect pressure retaining valve by the isolation circuit and drive respectively
Circuit and exhaust valve-driving circuit；The virtual protection circuit, which controls, is vented valve drive signal with protecting in the valve drive signal
The state of pressure valve drive signal meets default protective condition.
As a further improvement on the present invention：The pressurize valve-driving circuit, exhaust valve-driving circuit are metal-oxide-semiconductor driving
Circuit；The output terminal of the metal-oxide-semiconductor drive circuit be additionally provided with rectifier diode to prevent backflow, and TVS diode to prevent
Only output voltage is excessive.
As a further improvement on the present invention：The relay control unit includes control circuit, first switch pipe, second
Switching tube and relay feedback circuit, the control circuit connects one end of relay coil by second switch pipe, described
First switch pipe connects the other end of the relay coil, and the other end of the first switch pipe connects the exhaust valve protection
Unit, by the first switch pipe, second switch pipe conducting control relay electricity condition；The control circuit receives
The control signal and life signal, control the conducting of the second switch pipe, the first switch pipe is according to the exhaust
The anti-skidding fail safe trigger signal control conducting of valve protection unit output；The relay feedback circuit output relay obtains electric
The feedback signal of state.
As a further improvement on the present invention：The first switch pipe, second switch pipe are MOS switch pipe, solid-state relay
Device or optocoupler.
As a further improvement on the present invention：The relay control unit is further included for monitoring leading for first switch pipe
Logical state simultaneously sends the switching tube monitoring circuit of feedback signal, and the switching tube monitoring circuit connects the defeated of the first switch pipe
Outlet.
As a further improvement on the present invention：The main control module includes DSP main control units and FPGA monitoring units,
Data interaction is carried out by parallel bus between the DSP main control units and FPGA monitoring units；The FPGA monitoring units obtain
Take braking force distribution to instruct, be transferred to the DSP main control units, and monitor the operating status of the DSP main control units.
Compared with prior art, the advantage of the invention is that：
1) the anti-skidding control valve device of urban rail braking system of the present invention includes main control module and antiskid valve drive module, leads to
Cross main control module transmission valve drive signal and carry out control valve driving unit, carry out antiskid valve drive control, while pass through to control and believe
Number and life signal control air bleeding valve protection location and relay control unit, realize and anti-sliding control monitored and is protected
Shield, thus in failure can failure to the safe side measure in time, anti-sliding control is flexible, and safety and unfailing performance height；At the same time by preventing
The feedback signal that spool actuation module returns can also realize fault monitoring and positioning, when monitoring abnormal, can cut in time
Except the output of antiskid valve drive module, to ensure vehicle safety, and maintenance and maintenance beneficial to field device；
2) main control module of the present invention runs whether normal, antiskid valve by sending the life signal of some cycles to reflect
Whether drive module can abnormal with quick response main control module by life signal, so that when being judged as abnormal, can cut
Except antiskid valve drive module, ensure anti-sliding control safety；Main control module can be when occurring abnormal, to anti-by control signal
Spool actuation module is controlled, while under normal circumstances, then realization can be aided in monitor antiskid valve drive module
And check；
3) present invention is by antiskid valve drive module feedback signal to main control module, then main control module can be according to feedback
The signal and valve drive signal of transmission, control signal and life signal, are detected each point in antiskid valve drive module,
To judge the operating status of antiskid valve drive module, and then ensure when the failure to the safe side measure in time of abnormal energy occurs in circuit；
4) air bleeding valve protection location of the present invention further comprises air bleeding valve output monitoring circuit, is exported and monitored by air bleeding valve
The driving condition of circuit monitors air bleeding valve, when monitoring air bleeding valve exception, control performs anti-skidding fail safe action, protection row
Air Valve Control safety；Air bleeding valve protection location of the present invention further comprises the protection circuit being made of hardware circuit, simple in structure,
And anti-skidding fail safe can be performed effectively；
5) invention relay control unit further obtains electricity condition by two switch controlled relays of setting, with
In anti-skidding failure or abnormal conditions, can be improved anti-skidding by controlling the timely block system relay coil power of two switching tubes
The flexibility of control and security performance；Relay control unit further comprises switching tube monitoring circuit, to realize switch
The monitoring of pipe, thus can failure to the safe side measure in time when occurring abnormal.
Brief description of the drawings
Fig. 1 is the principle schematic diagram of anti-sliding control in urban rail braking system.
Fig. 2 is the principle schematic of anti-sliding control in urban rail braking system.
Fig. 3 is the structure diagram for the anti-skidding control device that the present embodiment is used for urban rail braking system.
Fig. 4 is the structure diagram of valve driving unit in the present embodiment.
Fig. 5 is the structure diagram of air bleeding valve protection location in the present embodiment.
Fig. 6 is the structure diagram of the present embodiment repeat circuit control unit.
Fig. 7 is the principle schematic diagram of main control module in the specific embodiment of the invention.
Fig. 8 is the principle schematic diagram of one group of anti-skidding drive control of valve in the specific embodiment of the invention.
Fig. 9 is the principle schematic diagram of an antiskid valve drive module in the specific embodiment of the invention.
Marginal data：1st, main control module；2nd, antiskid valve drive module；21st, valve driving unit；211st, virtual protection electricity
Road；212nd, isolation circuit；213rd, pressurize valve-driving circuit；214th, it is vented valve-driving circuit；22nd, air bleeding valve protection location；221、
Air bleeding valve output monitoring circuit；222nd, circuit is protected；23rd, relay control unit；231st, control circuit；232nd, first switch
Pipe；233rd, second switch pipe；234th, relay feedback circuit；235th, switching tube monitoring circuit.
Embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
Limit the scope of the invention.
As shown in figure 3, the present embodiment is used for the anti-skidding control device of urban rail braking system, including：
Main control module 1, for receiving the speed signal and braking instruction of axle, generate corresponding valve drive signal,
Control signal, the life signal whether abnormal for representing operation, and export to antiskid valve drive module 2, and according to feedback
Signal judges the operating status of antiskid valve drive module 2；
Antiskid valve drive module 2, for Anti-slip regulation valve, including sequentially connected valve driving unit 21, exhaust valve protection
Unit 22 and relay control unit 23, valve driving unit 21 receive valve drive signal Anti-slip regulation valve and send feedback letter
Number, air bleeding valve protection location 22 exports anti-skidding fail safe trigger signal according to the driving condition of air bleeding valve, control signal；Relay
Device control unit 23 obtains electric shape according to anti-skidding fail safe trigger signal, control signal and life signal control relay
State, and send feedback signal.
In the present embodiment, main control module 1 gathers shaft speed sensor signal, according to shaft speed signal and brake-cylinder pressure
The braking instructions such as signal, braking force distribution, emergency braking, release of brake, after non-slip interior calculates, export valve drive signal
, can be when occurring abnormal, to antiskid valve drive module 2 by control signal and control signal is to antiskid valve drive module 2
It is controlled, to cut off respective shaft or all antiskid valves according to demand；At the same time under normal circumstances, master control molding can be aided in
Block 1 is monitored and checked to antiskid valve drive module 2.Valve driving unit 21 receives valve driving letter in antiskid valve drive module 2
Number, driving pressure retaining valve, air bleeding valve, sending valve status feedback signal to main control module 1；Air bleeding valve protection location 22 receives exhaust
Valve driving condition and control signal, control export anti-skidding fail safe trigger signal；Relay control unit 23 receives control
Signal, life signal and air bleeding valve protection location 22 export signal, and control relay obtains electricity condition and sending filter shape
The feedback signal of state is to main control module 1.
In the present embodiment, main control module 1 further includes valve drive signal control and protection unit, valve drive signal control protection
The state that valve drive signal and pressurize valve drive signal are vented in unit control valve drive signal meets default protective condition.This reality
Apply example and preset protective condition and specifically include：1. evacuation time must have 5 seconds time-out and the function of anti-skidding failure punishment in 80 seconds；2. no
Allow pressure retaining valve dead electricity and air bleeding valve to obtain electric situation and occur at the same time, driven by valve drive signal control and protection unit control valve
Signal realizes the relay protective scheme of above-mentioned two protective condition, so as to fulfill anti-skidding valve protection.The present embodiment is especially by software side
Formula realizes the control logic of default protective condition, and control mode is simple and is easily achieved.
The present embodiment sends valve drive signal to control antiskid valve drive module 2 by main control module 1, carries out antiskid valve
Drive control, while anti-sliding control is monitored and is protected by control signal and life signal, so that in failure
Can failure to the safe side measure in time, anti-sliding control is flexible, and safety and unfailing performance are high；Returned at the same time by antiskid valve drive module 2
The feedback signal returned can also realize fault monitoring and positioning, when monitoring abnormal, can cut off antiskid valve driving mould in time
The output of block 2, to ensure vehicle safety, and maintenance and maintenance beneficial to field device.
The present embodiment main control module 1 reflects whether operation is normal by sending the life signal of some cycles, anti-skidding
Whether valve drive module 2 can abnormal with quick response main control module 1 by the life signal, so as to be cut when being judged as exception
Disconnected anti-sliding control, ensures anti-sliding control safety.The present embodiment life signal is specially the PWM ripples of square-wave signal or fixed duty cycle
Signal, can also use other types signal, and signal type and signal period can set according to the actual requirements.
As shown in figure 4, valve driving unit 21 includes virtual protection circuit 211, isolation circuit 212, pressurize in the present embodiment
Valve-driving circuit 213 and exhaust valve-driving circuit 214, virtual protection circuit 211 connect pressurize respectively by isolation circuit 212
Valve-driving circuit 213 and exhaust valve-driving circuit 214；Virtual protection circuit 211 controls air bleeding valve in valve drive signal to drive
The state of signal and pressurize valve drive signal meets default protective condition.Pressurize valve-driving circuit 213 drives according to pressure retaining valve to be believed
Number driving pressure retaining valve, exhaust valve-driving circuit 214 according to exhaust valve drive signal driving air bleeding valve, and export respectively pressure retaining valve,
The feedback signal of air bleeding valve driving condition is to main control module 1.
The present embodiment controls exhaust valve drive signal and pressurize valve drive signal especially by virtual protection circuit 211, no
Pressure retaining valve dead electricity and air bleeding valve is allowed to obtain electric while occur, to prevent that the loss of air damping power is excessive or loses brake force.Logic
Protection circuit 211 can also increase other defencive functions according to the actual requirements, preferably to ensure vehicle safety.
In the present embodiment, pressurize valve-driving circuit 213, exhaust valve-driving circuit 214 are metal-oxide-semiconductor drive circuit, are passed through
Metal-oxide-semiconductor drive circuit driving pressure retaining valve, the on off state of air bleeding valve.The present embodiment metal-oxide-semiconductor drive circuit is specifically used and carried
The driving chip of the functions such as stream protection, open circuit detection, overheat protector, feedback of status, when the detection circuit detection in driving chip
To overcurrent, open circuit, excess temperature when exception, fault status information is sent by feedback of status pin, thus when main control module 1 connects
, can be by the valve drive signal that has sent, to judge the malfunction of the driving chip after receiving these Feedback failure informations.
In the present embodiment, the output terminal of metal-oxide-semiconductor drive circuit is additionally provided with rectifier diode to prevent backflow, and TVS
(Transient Voltage Suppressor, transient voltage suppress) diode is to prevent that output voltage is excessive.
As shown in figure 5, air bleeding valve protection location 22 includes sequentially connected air bleeding valve output monitoring circuit 221 and protection
Circuit 222, the input terminal connection valve driving unit 21 of air bleeding valve output monitoring circuit 221, the output terminal connection of protection circuit 222
Relay control unit 23；The driving condition of the monitoring air bleeding valve of air bleeding valve output monitoring circuit 221 simultaneously receives control signal, according to
Monitor obtained driving condition result and control signal, control starting protection circuit 222 exports anti-skidding fail safe triggering letter
Number.The present embodiment monitors the driving condition of air bleeding valve by air bleeding valve output monitoring circuit 221, is monitoring the driving of air bleeding valve
During abnormal state, control protection electric circuit 222 performs anti-skidding fail safe action, ensures air bleeding valve control safety.
Circuit 222 is protected to include sequentially connected OR circuit, delay sub-circuit and guarantor referring to Fig. 5, in the present embodiment
Sub-circuit is held, the driving condition that OR circuit incoming control signal, air bleeding valve output monitoring circuit 221 monitor is as a result, carry out
Or output protection control signal after computing；The sub-circuit that is delayed sends trigger signal under protection control signal control and extremely keeps son electricity
Road, after keeping sub-circuit to receive trigger signal, control exports anti-skidding fail safe trigger signal and keeps preset duration.By or
Door, delay sub-circuit and the hardware circuit for keeping sub-circuit to form, limit the duration of air bleeding valve so that have antiskid valve
Evacuation time is overtime and anti-skidding fail is punished, to perform anti-skidding fail safe.The present embodiment is by protecting circuit 222 specifically real
5 seconds time-out of existing evacuation time and the function of anti-skidding failure punishment in 80 seconds, can also increase other defencive functions according to the actual requirements.
The present embodiment virtual protection circuit 211, protection circuit 222 realize the guarantor of antiskid valve by way of hardware circuit
Shield, with reference to the protection control of valve drive signal control and protection unit in main control module 1, a relay protective scheme can occur wherein
When abnormal, another can ensure safe guiding, so as to fulfill redundancy；When valve drive signal control and protection unit passes through software side
When formula realizes protection control logic, additionally it is possible to realize soft and hardware redundancy with together with virtual protection circuit 211, protection circuit 222,
Antiskid valve control safety is ensured by way of soft and hardware combination.
As shown in fig. 6, the present embodiment repeat circuit control unit 23 includes control circuit 231, first switch pipe 232, the
Two switching tubes 233 and relay feedback circuit 234, control circuit 231 connect relay coil by second switch pipe 233
One end, first switch pipe 232 connect the other end of the relay coil, and the other end of first switch pipe 232 connects the row
Air valve protection location 22, by first switch pipe 232, second switch pipe 233 conducting control relay electricity condition；Control
Circuit 231 receives control signal and life signal, and the conducting of control second switch pipe 233, first switch pipe 232 is according to exhaust
The anti-skidding fail safe trigger signal control conducting that valve protection unit 22 exports；234 output relay of relay feedback circuit obtains
The feedback signal of electricity condition.
The present embodiment by set in relay coil circuit two switch controlled relays electricity condition, two
Switching tube is respectively placed in coil front end and rear end, and wherein the switching tube (first switch pipe 232) of front end is by protection circuit 222
Whether output control turns on, and the switching tube (second switch pipe 233) of rear end controls its conducting, two switches by control circuit 231
When pipe all turns on, relay coil obtains electric, relay normally open point closure, and normally closed point disconnects.When air bleeding valve protection location 22 is defeated
When going out anti-skidding fail safe trigger signal, first switch pipe 232 is disconnected, relay coil must not be electric, performs anti-skidding fail safe；
When the life signal that control circuit 231 receives is abnormal, second switch pipe 233 is disconnected, relay coil must not be electric, life signal
By the opening of control signal control second switch pipe 233, disconnected state when normal；When first switch pipe 232, second switch pipe 233 are same
When turning on, relay coil obtains electric.Relay circuit by two switch controlled relay coils electricity condition, with
When anti-skidding failure or abnormal conditions, anti-slip control can be improved by controlling the timely block system relay coil power of two switching tubes
The flexibility of system and security performance.
In the present embodiment, first switch pipe 232, second switch pipe 233 can be with MOS switch pipe, solid-state relay or optocouplers
Deng can also select other that there is the device of similar switching function according to the actual requirements.
In the present embodiment, relay control unit 23 further includes concurrent for the conducting state that monitors first switch pipe 232
The switching tube monitoring circuit 235 of feedback signal is sent, switching tube monitoring circuit 235 connects the output terminal of first switch pipe 232.Pass through
Switching tube monitoring circuit 235 realizes the monitoring of first switch pipe 232, and main control module 1 can judge that first opens by feedback signal
Close whether pipe 232 turns on, with the energy failure to the safe side measure in time when occurring abnormal, so that (not conforming to relay in safe condition
The situation of device, i.e. relay coil must not be electric), individually protection circuit 222 is checked and monitored easy to main control module 1.
The present embodiment returns to feedback signal by antiskid valve drive module 2 and is driven to main control module 1, feedback signal including valve
Dynamic status feedback signal, relay obtain electricity condition feedback signal and switching tube monitoring feedback signal, then main control module 1 can root
According to the feedback signal and valve drive signal of transmission, control signal and life signal, each point of valve driving unit 21 is carried out
Detection, to judge that 21 state in which of valve driving unit (such as normal condition, overcurrent, open circuit, excess temperature etc.) and air bleeding valve are protected
Unit 22, the state of relay control unit 23 are protected, and then is ensured when circuit appearance exception can failure to the safe side measure in time.Work as master
Control module 1 receives switching tube monitoring feedback signal, can combine to be sent in air bleeding valve protection location 22 and protect circuit 222
Whether control signal, exhaust valve drive signal, judge whether first switch pipe 232 turns on, protect circuit 222 normal and be vented
Whether valve-driving circuit 214 exports overtime；Main control module 1 receives relay and obtains electricity condition feedback signal, then can combine control
Signal, exhaust valve drive signal and life signal processed, judge whether first switch pipe 232 turns on, whether+24V power supplys are valve
Drive circuit output power supply.
As shown in Fig. 7,8,9, antiskid valve drive module 2 is two in the specific embodiment of the invention, each antiskid valve driving
Module 2 corresponds to 2 air bleeding valves and 2 pressure retaining valves, and two groups of valves that each antiskid valve drive module 2 includes corresponding 4 valves are anti-skidding
Control structure, including 4 valve driving units, 21,2 air bleeding valve protection locations 22 and 2 relay control units 23, wherein 2
A 21,1 air bleeding valve protection locations 22 of valve driving unit and 1 relay control unit 23 are one group.The present embodiment is specific
The same antiskid valve drive module 2 of two groups of functions, single antiskid valve driving are designed with the anti-skidding valve control system of every section car
Module 2 completes the drive control of 24 valves of axis, by setting the identical antiskid valve drive module 2 of two functions, it is possible to reduce PCB
(Printed Circuit Board, printed circuit board) design efforts would, reduces corresponding file in flow, so as to shorten out
Send out the cycle and reduce later stage live required spare unit quantity.
Referring to Fig. 7, main control module 1 passes through a CPU (Central Processor Unit, center in the present embodiment
Processing unit) main control board realization, by drivings and control of the CPU to 8 valves, solenoid valve is carried out easy to CPU
Consistent control, while ensure the promptness of control.The present embodiment CPU specifically uses DSP, and main control module 1 specifically includes DSP
(Digital Signal Processing, Digital Signal Processing) main control unit and FPGA (Field Programmable
Gate Array, field programmable gate array) monitoring unit, by parallel total between DSP main control units and FPGA monitoring units
Line carries out data interaction；FPGA monitoring units obtain braking force distribution instruction, are transferred to DSP main control units, and monitor DSP master controls
The operating status of unit.DSP main control units obtain 4 road speed signals by DSP, while DSP is powered on after normal operation with certain
Cycle 2 road life signal of transmission, be sent respectively to two antiskid valve drive modules 2.FPGA monitoring units by FPGA from
Pci bus obtains the instruction such as braking force distribution, and the command information of acquisition is sent to DSP by parallel bus, DSP in conjunction with
The 4 road speed signals obtained, send corresponding 8 road valve control signal, 8 tunnels control letter after being analyzed by internal algorithm
Number.8 road valve control signals include 4 tunnels exhaust valve control signal, 4 tunnel pressurize valve control signals, export respectively single to 8 valve drivings
The control 4 groups of antiskid valves (4 air bleeding valves, 4 pressure retaining valves) of driving of member 21；8 tunnel control signals include 4 exhaust valve protection lists of control
4 tunnel control signals of member 22 and the 4 tunnel control signals for controlling 4 relay control units 23.
Anti-sliding control and anti-skidding function for monitoring are integrated in programmable digital circuit by the present embodiment by DSP, FPGA, only
Need one block of 3U plug-in unit to can be achieved, also there is high integration and high reliability while circuit function is met, compare at the same time
Need 6U or 2 piece of 3U plug-in unit volume to reduce half in traditional, greatly reduce volume size.
In the present embodiment, main control board receives the feedback signal that antiskid valve drive module 2 returns, and feedback signal is by I/O
Extended chip is sent to DSP main control units by I2C buses, if selected dsp chip has enough I/O pins,
Feedback signal also can be directly connected to the pin of dsp chip, I2C buses can also use SPI (Serial Peripheral
Interface, Serial Peripheral Interface (SPI)) bus or other buses, I2C bus types specifically can be by selected I/O extended chips
Determine.The present embodiment reserves SPI interface all the way in main control board DSP, for carrying out data friendship with simulation plug-in unit in cabinet
Mutually.
In the present embodiment, main control board is additionally provided with FLASH and NVsRAM (Non-Volatile Static Random
Access Memory, Nonvolatile static random access memory), to record the fault message and mistake during antiskid valve control
Number of passes evidence；A piece of house dog is set on main control board, for being monitored to plug-in unit operation level and DSP main control units, hair
Existing exceptional reset DSP, is monitored DSP together with house dog by FPGA, can effectively ensure that the normal work of DSP, together
When ensure that DSP can normally send valve drive signal and control signal；Ethernet all the way is also set up on main control board, is realized
The remote firmware renewal of DSP main control units, can also use CAN communication, 485 communications or other communication modes.Main control board
The power-supply system of middle veneer mainly includes one-board power supply and VCC-S being converted into veneer by protection filtering process or power supply chip
Work required various power supplys, the wherein VCC-S power supplys that cabinet interior power plate provides in order to control, and front panel connects in main control board
Connecing device, the type selecting of back panel connector and particular number can set according to system requirements.
As shown in Figure 8,9, pressurize valve-driving circuit 213, exhaust valve-driving circuit 214 in the present embodiment valve driving unit 21
It is metal-oxide-semiconductor drive circuit, isolation circuit 212 specifically includes two-way, and virtual protection circuit 211 passes through isolation circuit all the way respectively
212 connection pressure retaining valve metal-oxide-semiconductor drive circuits and air bleeding valve metal-oxide-semiconductor drive circuit.Pressurize valve drive signal directly by every
After carrying out isolation processing from circuit 212, it is connected in the controlling switch of pressure retaining valve metal-oxide-semiconductor drive circuit, controls the drive of pressure retaining valve
Dynamic output.It is vented valve drive signal to handle by the virtual protection of virtual protection circuit 211, that is, forbids pressure retaining valve dead electricity, exhaust
Valve obtains electric situation and occurs at the same time, then by isolation circuit 212 carry out isolation processing after, be connected to air bleeding valve metal-oxide-semiconductor driving electricity
In the controlling switch on road, the driving of air bleeding valve is controlled to export.Metal-oxide-semiconductor drive circuit exports terminating diode D1/D2, and front panel
External connector relevant interface connects TVS pipe TS1/TS2, and the external driving power of driving chip comes from metal-oxide-semiconductor drive circuit
Relay, power vd D are introduced from front panel, are connected to the normally opened or normally closed electric shock of relay, pass through the control to relay coil
System, realizes the control to driving chip driving power.
In the present embodiment, in the protection circuit 222 of valve driving unit 21 be delayed sub-circuit be specially 5 seconds delay sub-circuit,
It is specially to keep sub-circuit in 80 seconds to keep sub-circuit, i.e., so that antiskid valve evacuation time has 5 seconds time-out and anti-skidding failure in 80 seconds to punish
Penalize.The output of air bleeding valve metal-oxide-semiconductor drive circuit is monitored by air bleeding valve output monitoring circuit 221, and monitoring result is fed back
Protection circuit 222 is given, if air bleeding valve metal-oxide-semiconductor drive circuit exports, air bleeding valve output monitoring circuit 221 monitors metal-oxide-semiconductor drive
Dynamic output, the then signal for feeding back a high level are given protection circuit 222, are more than or equal to 5 seconds when the high level signal duration
When, 5 seconds delay sub-circuits will give 80 seconds and keep sub-circuit to send a trigger signal, keep sub-circuit to receive within 80 seconds
After the trigger signal, anti-skidding fail safe trigger signal is exported.
As shown in Figure 8,9, first switch pipe 232, second switch pipe 233 are adopted in the present embodiment relay control unit 23
It is respectively the first metal-oxide-semiconductor V1, the second metal-oxide-semiconductor V2 with metal-oxide-semiconductor.After keeping the sub-circuit to receive trigger signal when 80 seconds, control the
One metal-oxide-semiconductor pipe V1 is disconnected, and remains off 80 seconds, then relay coil circuit disconnects, relay coil must not electricity (i.e. after
Electric appliance _+24V must not be electric), metal-oxide-semiconductor is without driving power (i.e. metal-oxide-semiconductor non-transformer exports).Control circuit 231 according to control signal,
Life signal controls the conducting of the second metal-oxide-semiconductor V2, and when life signal is abnormal, (such as cycle is abnormal, duty cycle is abnormal or other
Abnormality), control circuit 231 directly controls the second metal-oxide-semiconductor V2 disconnections；When life signal is normal, control circuit 231 is by basis
Control signal (high level, low level) controls the second metal-oxide-semiconductor V2 on and off, so control relay coil it is electric,
Dead electricity.
The present embodiment antiskid valve drive module 2 receives the valve drive signal of antiskid valve, control signal by back panel connector,
And sending valve driving condition feedback signal, switching tube monitoring signal and relay feedback signal, to DSP, DSP is according to feedback letter
Number judge the operating status of 2 each unit of antiskid valve drive module.
Above-mentioned simply presently preferred embodiments of the present invention, not makees the present invention limitation in any form.It is although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modifications, equivalents, and modifications made for any of the above embodiments, should all fall
In the range of technical solution of the present invention protection.
Claims (10)
- A kind of 1. anti-skidding control device for urban rail braking system, it is characterised in that including：Main control module (1), for receiving the speed signal and braking instruction of axle, generates corresponding valve drive signal, control Signal processed, for represent operation whether abnormal life signal, and export and give antiskid valve drive module (2), and according to feedback Signal judges the operating status of the antiskid valve drive module (2)；Antiskid valve drive module (2), for Anti-slip regulation valve, including sequentially connected valve driving unit (21), exhaust valve protection Unit (22) and relay control unit (23), the valve driving unit (21) receive the valve drive signal Anti-slip regulation valve And feedback signal is sent, the air bleeding valve protection location (22) controls defeated according to the output state of air bleeding valve, the control signal Go out anti-skidding fail safe trigger signal；The relay control unit (23) is according to the anti-skidding fail safe trigger signal, control Signal and life signal control relay processed obtains electricity condition and sends feedback signal.
- 2. the anti-skidding control device according to claim 1 for urban rail braking system, it is characterised in that：The main control Module (1) further includes valve drive signal control and protection unit, and the valve drive signal control and protection unit controls the valve driving The state that valve drive signal and pressurize valve drive signal are vented in signal meets default protective condition.
- 3. the anti-skidding control device according to claim 2 for urban rail braking system, it is characterised in that：The air bleeding valve Protection location (22) includes sequentially connected air bleeding valve output monitoring circuit (221) and protection circuit (222), the air bleeding valve The input terminal of output monitoring circuit (221) connects the valve driving unit (21), the output terminal connection of the protection circuit (222) The relay control unit (23)；The driving condition of air bleeding valve output monitoring circuit (221) the monitoring air bleeding valve and reception The control signal, the driving condition result and the control signal obtained according to monitoring, control start the protection circuit (222) anti-skidding fail safe trigger signal is exported.
- 4. the anti-skidding control device according to claim 3 for urban rail braking system, it is characterised in that：The protection electricity Road (222) includes sequentially connected OR circuit, delay sub-circuit and keeps sub-circuit, and the OR circuit accesses the control Driving condition that signal processed, air bleeding valve output monitoring circuit (221) monitor as a result, carry out or computing after output protection control letter Number；The delay sub-circuit sends trigger signal to the holding sub-circuit, the guarantor under the protection control signal control Hold after sub-circuit receives trigger signal, control exports anti-skidding fail safe trigger signal and simultaneously keeps preset duration.
- 5. the anti-skidding control device according to claim 4 for urban rail braking system, it is characterised in that：The valve driving Unit (21) includes virtual protection circuit (211), isolation circuit (212), pressurize valve-driving circuit (213) and air bleeding valve driving Circuit (214), the virtual protection circuit (211) connect pressurize valve-driving circuit respectively by the isolation circuit (212) (213) and exhaust valve-driving circuit (214)；The virtual protection circuit (211) controls air bleeding valve in the valve drive signal The state of drive signal and pressurize valve drive signal meets default protective condition.
- 6. the anti-skidding control device according to claim 5 for urban rail braking system, it is characterised in that：The pressure retaining valve Drive circuit (213), exhaust valve-driving circuit (214) are metal-oxide-semiconductor drive circuit；The output terminal of the metal-oxide-semiconductor drive circuit Rectifier diode is additionally provided with to prevent backflow, and TVS diode to prevent that output voltage is excessive.
- 7. the anti-skidding control device for urban rail braking system according to any one in claim 1~6, its feature exist In：The relay control unit (23) include control circuit (231), first switch pipe (232), second switch pipe (233) with And relay feedback circuit (234), the control circuit (231) connect the one of relay coil by second switch pipe (233) End, the first switch pipe (232) connect the other end of the relay coil, the other end of the first switch pipe (232) The air bleeding valve protection location (22) is connected, is controlled by the conducting of the first switch pipe (232), second switch pipe (233) Relay obtains electricity condition；The control circuit (231) receives the control signal and life signal, and control described second is opened The conducting of pipe (233) is closed, the anti-skidding failure that the first switch pipe (232) exports according to the air bleeding valve protection location (22) is protected Protect trigger signal control conducting；Relay feedback circuit (234) output relay obtains the feedback signal of electricity condition.
- 8. the anti-skidding control device according to claim 7 for urban rail braking system, it is characterised in that：Described first opens Close pipe (232), second switch pipe (233) is MOS switch pipe, solid-state relay or optocoupler.
- 9. the anti-skidding control device according to claim 8 for urban rail braking system, it is characterised in that：The relay Control unit (23) is further included for monitoring the conducting state of first switch pipe (232) and sending the switching tube monitoring of feedback signal Circuit (235), the switching tube monitoring circuit (235) connect the output terminal of the first switch pipe (232).
- 10. the anti-skidding control device for urban rail braking system according to claim 8 or claim 9, it is characterised in that：The master Control module (1) includes DSP main control units and FPGA monitoring units, between the DSP main control units and FPGA monitoring units Data interaction is carried out by parallel bus；The FPGA monitoring units obtain braking instruction by core bus, are transferred to described DSP main control units, and monitor the operating status of the DSP main control units.
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| CN201510449535.1A CN105000007B (en) | 2015-07-28 | 2015-07-28 | A kind of anti-skidding control device for urban rail braking system |
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Families Citing this family (4)
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| CN105370962B (en) * | 2015-12-04 | 2017-10-24 | 南京中电自动化有限公司 | A kind of modularization operated pneumatic valve control unit |
| CN105607470B (en) * | 2016-03-04 | 2018-06-29 | 江西华伍制动器股份有限公司 | A kind of ground brandreth control movement controller solenoid valve control circuit of high reliability |
| CN106672220A (en) * | 2016-12-22 | 2017-05-17 | 西安航空制动科技有限公司 | Airplane braking system comprising high-speed analog-digital conversion chip and working method |
| CN113060113B (en) * | 2021-03-10 | 2022-02-15 | 交控科技股份有限公司 | Safe standby brake anti-skid system and method for railway vehicle-mounted brake control |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZH CSR TIMES ELECTRIC Co.,Ltd. |