CN102700539B - Multifunctional control type microcomputer straight-through electric control braking system - Google Patents
Multifunctional control type microcomputer straight-through electric control braking system Download PDFInfo
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Abstract
The invention relates to a multifunctional control type microcomputer straight-through electric control braking system. A brake electronic control unit is used for processing train data; two sets of brake control units are used for receiving instructions of the brake electronic control unit, controlling the braking of two side bogies of a train, and feeding signals of the bogies back to the brake electronic control unit; one or both of two valves between an auxiliary gas path control unit and the brake control units are opened, so as to achieve train control and frame control brake control modes; and when a communication pneumatic control valve is closed, brake cylinder gas paths on two axles of the same bogie automatically form a loop. The axles of the bogies are respectively controlled by the brake electronic control unit, so that the independent adjusting process of the pressure of the brake cylinder on each axle can be finished; therefore, an axial control mode of the brake control is achieved. According to the invention, the frame control, the train control and the axle control are switched freely on the train.
Description
Technical field
The present invention relates to the track train brake system, especially a kind of multi-functional control machine that declines leads directly to electro pneumatic braking system.
Background technology
Along with expanding economy, domestic each main cities is all building and preparing the construction City Rail Transit System, to solve growing public transport problem.Due to the city traffic vehicle launch and braking frequent, require stopping accuracy high, adapt to automatic Pilot and many requirements such as control automatically, its brake system has all adopted the microprocessor through electro-pneumatic braking system basically.At present the microprocessor through electro-pneumatic braking system is divided into two kinds of modes basically, and a kind of is car control mode, and another kind is frame control mode.These two kinds of modes all can be carried out accurate braking control to city rail vehicle, satisfy the needs of stopping a train at a target point.But two kinds of modes have characteristics separately:
(1) car is controlled moving control
Car is controlled the relatively morning of moving mode development, and relatively ripe, its reliability and manufacturability have been passed through long check.Adopt modular design, be very easy to maintenance.Only need a cover brake control module is installed on each car of the train of this brake control mode, can reduce costs.
(2) frame is controlled moving control
Frame is controlled moving mode and has been adopted highly integrated control module, under the prerequisite that guarantees original function, simplifies the structure and piping layout technique.Under the brake control module faulty condition, only lose the braking force of a bogie truck, and when car is controlled moving system, may lose the braking force of a car.From control principle, the idling braking time that frame is controlled moving mode slightly is better than car prosecutor case.From packaging technology, the electric and mechanical part of controlling moving control module due to frame loads in mixture, and necessary integral replacing is made troubles to maintenance, and the cost of maintenance is also higher simultaneously.Because each car need be installed two cover brake control modules, its cost is corresponding raising also.
Generally speaking, car is controlled moving control and frame is controlled moving control separately advantage is arranged, in development from now on also with Long Coexistence.But, for vehicle, can not switch between two kinds of braking control systems, satisfy the braking function under different condition.
Summary of the invention
To the objective of the invention is in order solving the problems of the technologies described above, the multi-functional control straight-through electro pneumatic braking system of machine that declines to be provided, can realize that to train car controls moving control and can realize that again frame controls moving control to realizing.
The technical scheme that the present invention takes is:
a kind of multi-functional control machine that declines leads directly to electro pneumatic braking system, comprise the air feed module, braking electronic control unit, brak control unit, described air feed module provides source of the gas for brake system, described braking electronic control unit is processed train data, described brak control unit receives the instruction of described braking electronic control unit, described brak control unit is braked control to the both sides bogie truck of train, and give described braking electronic control unit with the signal feedback of bogie truck, it is characterized in that, also comprise the auxiliary air passage control unit, described brak control unit is two covers, described auxiliary air passage control unit provides the air feed of two cover brak control units, when described auxiliary air passage control unit is given the air feed of a cover brak control unit wherein, this cover brak control unit is controlled the braking of train both sides bogie truck simultaneously, realize the moving master mode of car control, to two covers when brak control unit during air feed, described two cover brak control units are controlled the braking of train both sides bogie truck separately when described auxiliary air passage control unit, realize that frame controls moving master mode.
Further, described each brak control unit comprises that is communicated with a Pneumatic valve, and when described connection Pneumatic valve was closed, described braking electronic control unit was respectively to the regulating of the brake-cylinder pressure on the diaxon of homonymy bogie truck, and realizes that axle controls moving master mode.
Further, described braking electronic control unit sends instruction according to train speed and the deceleration value of brak control unit feedback to brak control unit, and described brak control unit is adjusted the size of braking force according to instruction.
Further, described brak control unit comprises long-range alleviation module, promptly get excited limiting module, brake control module, connectivity module and pressure sensor, described brake system comprises the brake cylinder on bogie truck, and described long-range alleviation module is used for alleviating the excess pressure of brake cylinder; Described urgent impulsion limiting module is carried out current limliting to the pressurized air that enters brake circuit; Described brake control module produces corresponding brake-cylinder pressure according to different braking ranks; Described connectivity module connects the brake cylinder of both sides bogie truck; Described pressure sensor is used for brake-cylinder pressure, Parking Brake Cylinders pressure and brake cylinder delivery pressure are gathered.
Further, described brake control module is two groups, and wherein one group is standby group.
Further, described auxiliary air passage control unit comprises empty and load adjusting module, foundation brake unit, Parking Brake Cylinders air supply module, and described empty and load adjusting module is adjusted to brake-pressure according to the train load weight with air pressure.
Further, described air feed module is arranged on the vehicle body bottom frame of train.
The invention has the beneficial effects as follows:
Valve closing between auxiliary air passage control unit and arbitrary cover brak control unit just can be realized the moving master mode of car control.
Valve between auxiliary air passage control unit and two cover brak control units is opened entirely just can be realized the moving master mode of frame control.
When the connection Pneumatic valve of brak control unit is closed, the brake cylinder gas circuit on same bogie truck two axletrees will have the loop of one's own.Control respectively the air draft electromagnetic valve of an axle, two axles and keep electromagnetic valve to move separately by braking electronic control unit, can complete the independent control process of brake-cylinder pressure on each axle, thereby having realized the axle control pattern that braking is controlled.
Braking electronic control unit is adjusted braking control strategy automatically by controlling and detect the folding of related valve, can realize flexibly the switching of car control, frame control and axle control pattern.
In the enforcement and switching process of above-described car control, frame control and axle control pattern, can by the software and hardware facilities support of braking electronic control unit, realize the deceleration/decel master mode of train braking system.
Description of drawings
Accompanying drawing 1 is the principle schematic (because drawing is smaller, the spy encloses the electronics files of Fig. 1 as annex, and the electronics shelves can amplify) of brake system of the present invention;
Accompanying drawing 3 is schematic diagram of gas circuit of brak control unit in the present invention;
Accompanying drawing 4 is schematic diagram of gas circuit of auxiliary air passage control unit in the present invention;
Accompanying drawing 5 is schematic diagrams that in the present invention, deceleration/decel is controlled.
Label in accompanying drawing is respectively:
1. air feed module; 2. braking electronic control unit;
3. brak control unit; 4. brak control unit;
5. auxiliary air passage control unit; 6. bogie truck;
7. bogie truck; 8. Pneumatic Suspension module;
9. Pneumatic Suspension module; 10. valve;
11. valve; A1. air compressor;
A2. flexible pipe; A3. boiler check valve;
A4. safety valve; A5. filter;
A6. cock; A7. lock mouth;
A8. air dryer; A9. boiler check valve;
A10. safety valve; A11. test splice;
A12. cock; A13. pressure switch;
A14. test splice; A15. cock;
A16. pressure switch; B1. long-range release electromagnetic valve;
B2. urgent impulsion limits electromagnetic valve; B3. an axle air draft electromagnetic valve;
B4. an axle keeps electromagnetic valve; B5. two axles keep electromagnetic valve;
B6. two axle air draft electromagnetic valves; B7. be communicated with electromagnetic valve;
B8. long-range alleviation pressurize Pneumatic valve; B9. urgent impulsion limits Pneumatic valve;
B10. an axle air draft Pneumatic valve; B11. an axle fills wind pressurize Pneumatic valve;
B12. two axles fill wind pressurize Pneumatic valve; B13. two axle air draft Pneumatic valves;
B14. be communicated with Pneumatic valve; B15. long-range alleviation air draft Pneumatic valve;
P1. pressure sensor; P2. pressure sensor;
P3. pressure sensor; C1. filter;
B16. empty and load adjusting module; B1601. main inlet control valve;
B1602. pressure sensor; B1603. Weighing control electromagnetic valve;
B1604. Weighing control electromagnetic valve; B1605. secondary control cock;
B17. check valve; B18. cock;
B19. test splice; B20. pressure switch;
B21. impulse electromagnetic valve; B22. two-way valve;
B23. test splice; B24. pressure switch;
L1. cock; L2. leaf filter;
L3. limiting valve; L4. pressure regulating valve.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment that the multi-functional control of the present invention machine that declines leads directly to electro pneumatic braking system is elaborated.
Referring to accompanying drawing 1, micro-computer controlled straight electro-pneumatic braking system mainly is comprised of braking electronic control unit (BECU) 2, brak control unit (BCU) 3 and brak control unit 4, auxiliary air passage control unit (PCU) 5, air feed module 1 etc.Braking electronic control unit (BECU) is used for air brake and controls and anti-skidding control.Brak control unit is accepted the instruction of braking electronic control unit, and electric signal is converted to the air pressure signal makes brake system carry out corresponding braking and alleviate, and to the braking electronic control unit feedback signal.
Braking electronic control unit 2 carries out air brake control and anti-skidding control by the microprocessor (DSP) of its inside, unit.It and has self-diagnostic function and stores the failure message function except can gathering, receive, process, transmit, feed back relevant signal.Can carry out data exchange by other microprocessor control systems on corresponding software and interface and train, be used for the information etc. in debugging, test and readout memory.
Referring to accompanying drawing 5, braking electronic control unit 2 directly with braking deceleration as value of feedback, adjust the braking force size according to the difference of deceleration/decel expected value and braking deceleration, this method is called the deceleration/decel master mode.The brake system of implementing deceleration/decel control braking mode is a closed loop control system, and its medium velocity and deceleration/decel are all feedback signal.This master mode can make up the shortcoming of brake-power control and speed adhesion control, makes accurate parking become possibility.The impact of friction coefficient when during deceleration/decel is controlled, friction brake force calculating has been avoided in the control of braking force, thus make the control of braking force more accurate.It is that speed adhesion curve in strict accordance with design carries out brake-power control that deceleration/decel is controlled, and makes like this to slide probability and greatly reduce.
Continuation is referring to accompanying drawing 1, and brak control units 3,4 are overlapped in each car configuration two, and according to the difference of brake control mode, but flexible choice cover or two cover job wherein realize that frame control is moving and car control is moving.When adopting the frame control, brak control unit 3 is that bogie truck 6 produces independent, relevant to load signal air-making power instruction according to train control data and bogie truck 6 load capacities.Brak control unit 3 gathers the load-carrying pressure signal of bogie truck 6 and feeds back to braking electronic control unit.Calculate backward brak control unit 3 through braking electronic control unit 2 and send corresponding electric signal instruction.Brak control unit 3 is accepted the instruction of braking electronic control unit, and electric signal is converted to the air pressure signal makes foundation brake rigging carry out corresponding braking and alleviate, and to braking electronic control unit 2 feedback signals; Simultaneously, brak control unit 4 is that bogie truck 7 produces independent, relevant to load signal air-making power instruction according to train control data and bogie truck 7 load capacities.Brak control unit 4 gathers the load-carrying pressure signal of bogie truck 7 and feeds back to braking electronic control unit.Calculate backward brak control unit 4 through braking electronic control unit 2 and send corresponding electric signal instruction.Brak control unit 4 is accepted the instruction of braking electronic control unit, and electric signal is converted to the air pressure signal makes foundation brake rigging carry out corresponding braking and alleviate, and to braking electronic control unit 2 feedback signals; When adopting the car control, shutoff valve 10, cut off from auxiliary air passage control unit 5 to brak control unit 3 air supply channel, brak control unit 4 work, brak control unit 4 transmits the air brake instructions for simultaneously bogie truck 6 and bogie truck 7.Also but shutoff valve 11, cut off from auxiliary air passage control unit 5 to brak control unit 4 air supply channel, brak control unit 3 work, brak control unit 3 transmits the air brake instructions for simultaneously bogie truck 6 and bogie truck 7.Valve 10 and valve 11 can not be closed simultaneously.
Referring to accompanying drawing 2, air feed module 1 mainly is comprised of air compressor A1, metallic hose A2, safety valve A4, safety valve A10, filter A5, air dryer A8, boiler check valve A3, boiler check valve A9, cock A6, cock A12, cock A15, locking mouth A7, test splice A11, test splice A14, pressure switch A13, pressure switch A16 etc.Whole air feed module 1 adopts Integration Design, be installed on vehicle body bottom frame after being integrated in a general frame, wherein air compressor A1 is installed on framework by shock absorber elasticity, and prevents coming off of air compressor A1 by the steel rope that is connected on vehicle body bottom frame at two.
Referring to accompanying drawing 3, brak control unit 3 is mainly by long-range alleviation module, promptly get excited limiting module, brake control module, connectivity module and pressure sensor forms.
Long-range alleviation module is comprised of long-range release electromagnetic valve B1, long-range alleviation pressurize Pneumatic valve B8 and long-range alleviation air draft Pneumatic valve B15, when carrying out long-range alleviation, long-range release electromagnetic valve B1 gets electric, long-range alleviation pressurize Pneumatic valve B8 and long-range alleviation air draft Pneumatic valve B15 action, when cutting off the relay valve delivery pressure, discharge the pressure air of brake cylinder.
Urgent impulsion limiting module is comprised of urgent impulsion restriction electromagnetic valve B2 and urgent impulsion restriction Pneumatic valve B9, during service braking, urgent impulsion restriction electromagnetic valve B2 gets electric, urgent impulsion restriction Pneumatic valve B9 opens, make the unrestricted brake servo circuit that enters of pressurized air, thereby guarantee braking wind; During emergency braking, urgent impulsion restriction electromagnetic valve B2 dead electricity, urgent impulsion restriction Pneumatic valve B9 closes, and makes pressurized air enter brake servo circuit after current limliting, thereby has the impulsion limitation function.
Brake control module (BCP) has identical two groups, is respectively an axle air draft electromagnetic valve B3, an axle keeps electromagnetic valve B4, an axle air draft Pneumatic valve B10, an axle to fill wind pressurize Pneumatic valve B11 and two axle air draft electromagnetic valve B5, two axles keep electromagnetic valve B6, two axles to fill wind pressurize Pneumatic valve B12, two axle air draft Pneumatic valve B13.These two groups of valve functions are identical, are all to produce corresponding brake-cylinder pressure according to different braking ranks.Under normal circumstances, be used alternatingly one group of valve wherein, another group is standby.When filling wind, an axle air draft electromagnetic valve B3 and an axle keep electromagnetic valve B4 dead electricity, and an axle air draft Pneumatic valve B10 closes, and an axle fills wind pressurize Pneumatic valve B11 to be opened, and fills wind to brake cylinder; During air draft, it is electric that an axle air draft electromagnetic valve B3 and an axle keep electromagnetic valve B4 to get, and an axle air draft Pneumatic valve B10 opens, and an axle fills wind pressurize Pneumatic valve B11 closes, and the wind of brake cylinder is discharged through an axle air draft Pneumatic valve B10; During pressurize, it is electric that an axle keeps electromagnetic valve B4 to get, an axle air draft electromagnetic valve B3 dead electricity, and an axle air draft Pneumatic valve B10 and an axle fill wind pressurize Pneumatic valve B11 closes, and brake cylinder is in packing state.
Connectivity module comprises and is communicated with electromagnetic valve B7 and is communicated with Pneumatic valve B14.Under normal condition, be communicated with electromagnetic valve B7 dead electricity, be communicated with Pneumatic valve B14 and be in connected state, during braking, the brake-cylinder pressure that brake control module produces enters two axles of same bogie truck simultaneously, and namely under normal condition, brake mode adopts frame prosecutor formula.When generation is slided, being communicated with electromagnetic valve B7 gets electric, being communicated with Pneumatic valve B14 closes, take left side bogie truck 6 as example, brake cylinder gas circuit on two axletrees of this side bogie truck 6 will have the loop of one's own, to control respectively by braking electronic control unit 2. an axle air draft Pneumatic valve B10, an axle fill that wind pressurize Pneumatic valve B11, two axles fill wind pressurize Pneumatic valve B12, two axle air draft Pneumatic valve B13 move separately, can complete the independent control process of brake-cylinder pressure on each axle, two groups of brake control modules are controlled every axle respectively.
Pressure sensor P1, P2, P3 are used for braking reservoir pressure, Parking Brake Cylinders pressure and brake cylinder delivery pressure are gathered.
Referring to accompanying drawing 4, auxiliary air passage control unit 5 mainly is comprised of empty and load adjusting module B16, Pneumatic Suspension reservoir air supply module, foundation brake unit Parking Brake Cylinders air supply module etc.
Empty and load adjusting module B16 mainly comprises main inlet control valve B1601, pressure sensor B1602, Weighing control electromagnetic valve B1603, Weighing control electromagnetic valve B1604 and secondary control cock B1605.Wherein main inlet control valve B1601 is responsible for the unit is adjusted to the stress level suitable with the load weight emergency brake pressure for wind pressure, guarantees the empty wagons emergency brake cylinder pressure of minimum output.The effect of Weighing control electromagnetic valve B1603, Weighing control electromagnetic valve B1604 and pressure sensor B1602 is the emergency brake cylinder pressure of the actual car weight of output.Secondary control cock B1605 can be adjusted into according to car weight the maximum emergency brake cylinder pressure of loaded vehicle.
Pneumatic Suspension reservoir air supply module mainly is comprised of cock L1, leaf filter L2, limiting valve L3 and pressure regulating valve L4, to Pneumatic Suspension module 8,9 air feed.
Foundation brake unit Parking Brake Cylinders air supply module mainly is comprised of impulse electromagnetic valve B21, two-way valve B22, test splice B23 and pressure switch B24.To reach certain ramp during due to vehicle parking and park requirement, so the foundation brake unit that this brake system has adopted band to park.Controlled alleviation and the supply of Parking Brake Cylinders inner air pressure in the foundation brake unit by impulse electromagnetic valve B21, for preventing that impulse electromagnetic valve B21 lost efficacy, also be furnished with a two-way valve B22 on the PCU module, it can lead to brake-cylinder pressure or impulse electromagnetic valve B21 delivery pressure (high pressure is preferential) foundation brake unit Parking Brake Cylinders, park chamber and brake repair room inflation/alleviate the synchronism of implementing in the foundation brake unit that has guaranteed that band parks, avoided air brake and parking brake to taking turns applying simultaneously.The setting of test splice B23 and pressure switch B24 is in order to monitor applying or relieved state of parking brake, and the status signal of parking brake is passed to BECU, prevents from simultaneously starting train under the state that parking brake applies.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. the multi-functional control machine that declines leads directly to electro pneumatic braking system, comprise the air feed module, braking electronic control unit, brak control unit, described air feed module provides source of the gas for brake system, described braking electronic control unit is processed train data, described brak control unit receives the instruction of described braking electronic control unit, described brak control unit is braked control to the both sides bogie truck of train, and give described braking electronic control unit with the signal feedback of bogie truck, it is characterized in that: also comprise the auxiliary air passage control unit, described brak control unit is two covers, described auxiliary air passage control unit provides the air feed of two cover brak control units, when described auxiliary air passage control unit is given the air feed of a cover brak control unit wherein, this cover brak control unit is controlled the braking of train both sides bogie truck simultaneously, realize the moving master mode of car control, to two covers when brak control unit during air feed, described two cover brak control units are controlled the braking of train both sides bogie truck separately when described auxiliary air passage control unit, realize that frame controls moving master mode.
2. the multi-functional control according to claim 1 machine that declines leads directly to electro pneumatic braking system, it is characterized in that: each described brak control unit comprises that is communicated with a Pneumatic valve, when described connection Pneumatic valve is closed, described braking electronic control unit is regulated the brake-cylinder pressure on the diaxon of homonymy bogie truck respectively, realizes the moving master mode of axle control.
3. the multi-functional control according to claim 1 machine that declines leads directly to electro pneumatic braking system, it is characterized in that: described braking electronic control unit sends instruction according to train speed and the deceleration value of brak control unit feedback to brak control unit, and described brak control unit is adjusted the size of braking force according to instruction.
4. according to claim 1 to 3, the described multi-functional control of any one machine that declines leads directly to electro pneumatic braking system, it is characterized in that: described brak control unit comprises long-range alleviation module, promptly get excited limiting module, brake control module, connectivity module and pressure sensor, described brake system comprises the brake cylinder on bogie truck, and described long-range alleviation module is used for alleviating the excess pressure of brake cylinder; Described urgent impulsion limiting module is carried out current limliting to the pressurized air that enters brake circuit; Described brake control module produces corresponding brake-cylinder pressure according to different braking ranks; Described connectivity module connects the brake cylinder of both sides bogie truck; Described pressure sensor is used for brake-cylinder pressure, Parking Brake Cylinders pressure and brake cylinder delivery pressure are gathered.
5. the multi-functional control according to claim 4 machine that declines leads directly to electro pneumatic braking system, and it is characterized in that: described brake control module is two groups, and wherein one group is standby group.
6. according to claim 1 to 3, the described multi-functional control of any one machine that declines leads directly to electro pneumatic braking system, it is characterized in that: described auxiliary air passage control unit comprises empty and load adjusting module, foundation brake unit, Parking Brake Cylinders air supply module, and described empty and load adjusting module is adjusted to brake-pressure according to the train load weight with air pressure.
7. according to claim 1 to 3, the described multi-functional control of any one machine that declines leads directly to electro pneumatic braking system, and it is characterized in that: described air feed module is arranged on the vehicle body bottom frame of train.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210171974 CN102700539B (en) | 2012-05-30 | 2012-05-30 | Multifunctional control type microcomputer straight-through electric control braking system |
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| CN 201210171974 CN102700539B (en) | 2012-05-30 | 2012-05-30 | Multifunctional control type microcomputer straight-through electric control braking system |
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| CN102700539A CN102700539A (en) | 2012-10-03 |
| CN102700539B true CN102700539B (en) | 2013-05-08 |
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| CN101508287B (en) * | 2009-03-25 | 2010-07-28 | 南京航空航天大学 | Electropneumatic braking method and system with fault complementary control based on single-axis control |
| CN201882108U (en) * | 2010-12-03 | 2011-06-29 | 中国铁道科学研究院机车车辆研究所 | Braking control device for railway vehicle braking system |
| CN102328646B (en) * | 2011-07-25 | 2016-10-05 | 中车青岛四方车辆研究所有限公司 | Urban tram braking system |
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2012
- 2012-05-30 CN CN 201210171974 patent/CN102700539B/en active Active
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| Publication number | Publication date |
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| CN102700539A (en) | 2012-10-03 |
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Address after: 201802 Jiading District, Shanghai South Road, No. 500, No. 12 Patentee after: China railway traffic equipment (Shanghai) Co., Ltd. Address before: 201802 Jiading District, Shanghai South Road, No. 500, No. 12 Patentee before: Shanghai Pangfeng Traffic Equipment Technology Co., Ltd. |