CN101941382B - Railway wagon electropneumatic brake system and method based on wireless communication - Google Patents

Railway wagon electropneumatic brake system and method based on wireless communication Download PDF

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Publication number
CN101941382B
CN101941382B CN2010102836236A CN201010283623A CN101941382B CN 101941382 B CN101941382 B CN 101941382B CN 2010102836236 A CN2010102836236 A CN 2010102836236A CN 201010283623 A CN201010283623 A CN 201010283623A CN 101941382 B CN101941382 B CN 101941382B
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China
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node
electromagnetic valve
brake
embedded
microprocessor
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CN2010102836236A
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Chinese (zh)
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CN101941382A (en
Inventor
鲁五一
熊红云
张纯和
王莉
吴志虎
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中南大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

Abstract

The invention discloses a railway wagon electropneumatic brake system and method based on wireless communication. The locomotive and every carriage are respectively provided with an embedded node, and all the embedded nodes form a wireless master-slave network topology; and the locomotive node is the master node, and the carriage nodes are the slave nodes. Each embedded node comprises a microprocessor, a wireless communication module, a power supply and a brake actuating mechanism, wherein both the wireless communication module and the brake actuating mechanism are connected with the microprocessor; and the brake actuating mechanism is composed of the original air brake mechanism and a newly added solenoid valve, wherein the newly added solenoid valve comprises a solid-state relay and is used for controlling the train pipe air pressure. The master node transmits a control instruction to the slave nodes through a wireless link so as to control the synchronization actions of the slave nodes, thereby finally realizing the synchronous remission and braking of the whole railway wagon. The system and method can effectively shorten the train braking time, prevent the coupling from rupture and enhance the train safety.

Description

Railway truck electropneumatic brake system and method based on radio communication
Technical field
The invention belongs to railway truck control of braking technical field, be specifically related to a kind of railway truck electropneumatic brake system and method based on radio communication.
Technical background
In order to improve railway transport capacity, the freight train heavy duty is the main developing direction of China Railway.Heavy duty is the test to the train braking performance essentially, and the deceleration and stopping performance that improves train is the task of top priority of resolving train heavy duty and safe in operation.
China's freight train brake system is continued to use Pneumatic brake systems always; Because the air brake velocity of wave can't surpass 300m/s, when starting ten thousand tons of long and big trains, heavy haul train front and back car brakeing power actv. start time when commonly used, emergency braking is inconsistent; Preceding back early is late; The front and back time difference is long, is prone to cause the train local traction excessive, and serious meeting causes disconnected hook, derailment accident.Therefore, reduce the time difference long (time) of the glancing impact front and back car brakeing power actv. start time of full train, being close to the synchronized generation braking force as much as possible is the developing direction that improves deceleration and stopping performance, guarantees safe train operation.
Train braking is exactly the motion of preventing train artificially, comprises its is slowed down, and does not quicken or out of service.The train braked or locomotive are removed or weakened its brake action, then be called " alleviation ".For apply brake and alleviation a whole set of equipment ON TRAINS is installed, is generically and collectively referred to as train " brake equipment ".
The major defect of existing goods train Pneumatic brake systems is:
(1) do not possess network communicating function, cause producing the overlong time of braking force, can not realize the wireless synchronization braking of every joint vehicle away from the vehicle of locomotive.
(2) do not possess data in real time and handle and fault diagnosis functions, when breaking down, can't in time provide alerting signal or ground service personnel that relevant locomotive failure information is provided to the driver.
Summary of the invention
Technical matters to be solved by this invention is to propose a kind of railway truck electropneumatic brake system and method based on radio communication; Should many shortcomings that original Pneumatic brake systems had have been overcome based on the railway truck electropneumatic brake system and method for radio communication; The train braking time can effectively be shortened; And prevent that hitch from rupturing the safety that has improved train.
Technical solution of the present invention is following:
A kind of railway truck electropneumatic brake system based on radio communication; On locomotive and each joint compartment, be equipped with an embedded node; Radio communication connects between the embedded node, and all embedded node form wireless type master-slave network topological structure, and the embedded node on the locomotive is a major joint; Embedded node on the compartment is from node; Each embedded node comprises microprocessor, wireless communication module, power supply and brake actuator, and wireless communication module all is connected with microprocessor with brake actuator, and brake actuator comprises solid-state relay and is used to control the electromagnetic valve that the train manage-style is pressed; The I/O mouth of microprocessor connects the input end of solid-state relay, and electromagnetic valve connects the mouth of solid-state relay.
Described microprocessor adopts the ARM microprocessor, adopts the GSM-R communication to realize that communication connects between the embedded node, and it is the 2/2-way electromagnetic valve that electromagnetic valve adopts electromagnetic valve.
Described power supply adopts the storage battery of 18V, and storage battery is given electromagnetic valve through DC/DC voltage transformation module output 12V direct current.
A kind of railway truck Electropneumatic brake method based on radio communication; On locomotive and each joint compartment, be equipped with an embedded node, radio communication connects between the embedded node, and all embedded node form wireless type master-slave network topological structure; Embedded node on the locomotive is a major joint; Embedded node on the compartment is from node, and the major joint sending controling instruction is given respectively from node, and described control command comprises electromagnetic valve and opens and closes status data and battery valve unlatching or shut data; Drive the adjusting that the electromagnetic valve action is pressed with control train manage-style from node according to the control command that receives, thereby realize the alleviation and the braking in this compartment, node place; From the node synchronization action, finally realize the synchronous alleviation and the braking of whole railway truck through a plurality of.
Embedded node serves as the control core with the ARM microprocessor, the current employing GSM-R communication letter between the embedded node, and electromagnetic valve adopts the 2/2-way electromagnetic valve.
Brake actuator by original air brake mechanism (reservoir and pipeline) and the solid-state relay that newly adds be used to control the electromagnetic valve that the train manage-style presses and form.
Beneficial effect:
The present invention is directed to the problem and the development tendency that exist in the present railway freight car safe operation, proposing to utilize wireless master-slave network on every joint car, to realize the new mode of railway truck electropneumatic brake and wireless telecommunications aspect the braking technology first.
Innovation research of the present invention a kind of railway truck electropneumatic brake equipment based on radio communication; Between locomotive and vehicle, transmit braking information through wireless communication module; The gas that charges and discharge through control electromagnetic valve quickens braking and alleviation process, realizes the wireless synchronization braking of full train.
Innovation research of the present invention a kind of railway truck electropneumatic brake equipment based on microprocessor; The active electronic device is installed on the railway truck; Electricity instruction as speed-slackening signal, has been abandoned pressurized air in the previous Pneumatic brake systems not only as braking instruction but also as the dilemma of braking force medium.Simultaneously, creatively electromagnetic valve is installed on the railway truck as actuating unit, quickens the braking procedure of full train through the action of electromagnetic valve.Be embodied in: reduced the braking time of full train, quickened the braking procedure of full train; And overcome that the time-delay of conventional air brake air ripple is excessive, the excessive problem of hitch pulling force or pressure between the asynchronous vehicle that causes of braking (because; Vehicle can not start simultaneously during alleviation, and hitch shows as pulling force, and glancing impact can not stop simultaneously; Hitch shows as pressure); The draw bar pull that has guaranteed the every joint vehicle of train is in tolerance band (because pulling force (tractive force) too conference cause hitch to be broken) all, thereby prevent the hitch fracture, finally guarantees the operation that train safe is stable.
Goods train electropneumatic brake system based on wireless communication module all has great improvement to freight train deceleration and stopping performance and safety in operation, is to start the 20000 tons of trains and one of the important support technology of large traction weight goods train more.
Description of drawings
Fig. 1: wireless type master-slave network topological structure scheme drawing;
Fig. 2: embedded Control structured flowchart;
Fig. 3: the framed structure scheme drawing of switching value output unit;
Fig. 4: the schematic circuit diagram that solid-state relay drives;
Fig. 5: solenoid valve frame construction drawing;
Fig. 6: GSM-R and ARM bonded assembly constructional drawing;
Fig. 7: electromagnetic valve position view.
Label declaration among Fig. 7: the 1-first train arm electromagnetic valve (often opening), the 2-second train arm electromagnetic valve (normally closed), 3-brake cylinder electromagnetic valve (normally closed), 4-brake-cylinder pressure sensor (being used to detect braking mode) 5-train arm pressure sensor.
The specific embodiment
Below combination figure and practical implementation process are explained further details to the present invention:
Embodiment 1:
To existing railway freight train non-transformer, no lead with frequently separate the characteristics of marshalling, the present invention provides a kind of simple and compact for structure, active electronic equipment that cost performance is high.This equipment has system controlled by computer and network communication function, can improve control accuracy, enlarging application range, belongs to the electropneumatic brake equipment of railway truck.
Railway truck electropneumatic brake equipment based on radio communication is all regarded locomotive and every joint compartment as a node, adopts wireless type master-slave network topological structure, and is as shown in Figure 1.As shown in Figure 2, each node all is a complete embedded system, is made up of following 4 main portions: the 1.ARM microprocessor; 2.GSM-R wireless communication module; 3. power supply; 4. brake actuator (being electromagnetic valve among Fig. 2 etc.), the SSR among the figure is a solid-state relay.Circuit such as Fig. 4 that solid-state relay drives, from the control signal that the universaling I/O port of microprocessor ARM is exported, after process NPN type aerotron amplifies, driving solid relay, and then control electromagnetic valve.Fig. 3 (structured flowchart of switching value output unit) can regard the cut-away view of Fig. 4 as, and amplifying circuit is realized by aerotron, comprises photoelectricity isolation and current foldback circuit in the solid-state relay.The annexation of GSM-R and ARM is as shown in Figure 6.
Microprocessor is the core of electropneumatic brake control system, it play a part the opening of control electromagnetic valve, disconnected communicate by letter with GSM-R with transmitting brake and mitigation signal.Main control unit adopts the S3C2440 treater, good characteristic such as have High Performance, low-power consumption, rich interface, volume is little, integrated level is high and configurability is strong.
Wireless communication module is realized communicating by letter between locomotive and the compartment.The braking information of sending through the locomotive bus attendant by the locomotive host process after wireless communication module through major joint be delivered on every joint lorry with the form of note; After the wireless receiving module from node on every joint lorry is received the braking information of main frame; Information is passed to microprocessor with the form of digital quantity; Switching by electromagnetic valve valve on digital quantity 0 or the every joint of the 1 control compartment comes to charge and discharge gas to the train pipe, and then reaches the purpose that control train manage-style is pressed.Like this, the braking and the alleviation process of the gas control system that the charges and discharge railway truck through microprocessor controls solenoid valves.
Power unit provides through storage battery, and comes for each module required power supply to be provided through the DC-DC module converts.The I/O mouth of microprocessor connects the input end of solid-state relay, and electromagnetic valve connects the mouth of solid-state relay.It comprises two normally closed solenoid valves and a normally open solenoid valve.Valve closes during the normally closed solenoid valve dead electricity, when electric valve break off, be mainly used in the blast (i.e. venting) that glancing impact reduces brake pipe, normally closed solenoid valve also is called braking electromagnetic valve; Valve breaks off during the normally open solenoid valve dead electricity, valve closes when electric, be mainly used in the blast (inflation) that increases brake pipe when alleviating, normally open solenoid valve also is called release electromagnetic valve.The mode of operation of electromagnetic valve is as shown in Figure 7.Microprocessor through the signal control of the wireless module that receives often open, the action of normally closed solenoid valve: train arm pressure sensor detects train and props up pipe pressure; The action of control train arm normally closed solenoid valve; Cause train pipe pressure reduction to change, realize commonly used or emergency braking; Train arm pressure sensor detects train and props up pipe pressure and reach and release the pressure, and brake cylinder is not alleviated, and during the pressure superelevation, it is closed that microprocessor control train arm electromagnetic valve often leaves the position, opens the brake cylinder normally closed solenoid valve simultaneously, realizes closing the door air draft.
This tests used electromagnetic valve is the 2/2-way electromagnetic valve.The principle of solenoid valve is as shown in Figure 5.
The principal parameter of electromagnetic valve is following:
Working pressure range: 0.03-1.0Mpa;
Operating voltage: 12VDC;
Nominal diameter: 15mm.
The small-sized DC solid-state relay that electromagnetic valve is isolated through the input and output electricity amplifies driving.The principal parameter of solid-state relay is following:
Control voltage: 3VDC-10VDC
Received current: 15mA
On-load voltage: 0-60VDC
Load current: 0-5ADC
Pressure drop: 0.5V
Power consumption: 0.6W
Glancing impact; The driver sends braking instruction through the stop button of handling driver's cab; Braking instruction will pass to every joint compartment synchronously through train GSM-R communication network, and the ARM microprocessor control brake electromagnetic valve action by every joint compartment makes the pressure air of auxiliary reservoir charge into brake cylinder.It is on the GSM of the common wireless communication system platform, special in satisfying the digital wireless communication system that railway applications is developed that GSM-R is based on, and belongs to a kind of of specialized mobile radio.During alleviation, the driver presses the alleviation button, and braking instruction will pass to every joint compartment through cordless communication network, according to the requirement of the required alleviation of driver, alleviates this car and reaches certain braking force or alleviation fully.Therefore, electropneumatic brake equipment can often be opened or time that normally closed solenoid valve is closed or opened is regulated the size of car brakeing power arbitrarily through controlling according to the needs of train real-world operation by the driver.The braking information that the locomotive bus attendant sends is passed to master microprocessor with the form of digital quantity 0 or 1; By being delivered on every joint lorry through the form of AT instruction through main wireless communication module after the locomotive host process with note; On every joint lorry receive the braking information of main frame from wireless receiving module after; The switching of electromagnetic valve valve comes to charge and discharge gas to the train pipe on every joint compartment by controlling from the microprocessor call subroutine, and then reaches the purpose that control train manage-style is pressed.In three electromagnetic valves; One of them normally closed solenoid valve also is called train arm normally closed solenoid valve, and normally open solenoid valve also is called train arm normally open solenoid valve, and they are worked with train arm pressure sensor; Train pipe pressure reduction is changed, realize commonly used or emergency braking; Another normally closed solenoid valve also is called the brake cylinder normally closed solenoid valve, and it is worked with the brake-cylinder pressure sensor, and when brake cylinder train tube pressure superelevation, control train arm normally open solenoid valve is closed, opens the brake cylinder normally closed solenoid valve simultaneously, realizes closing the door air draft.Like this, the detection action of three electromagnetic valves of control in time through train arm pressure sensor and brake-cylinder pressure sensor realizes the braking and the alleviation of train.
The vehicle that the electropneumatic brake system is housed keeps original Pneumatic brake systems simultaneously as subsequent use.When the electropneumatic brake system in the use was excised because of major failure, the trainman can handle the air brake effect that conventional Pneumatic brake systems is realized train, guaranteed traffic safety.Under normal circumstances should preferentially and give full play to the electropneumatic brake ability, insufficient section is main with air brake under the dead electricity situation with air brake by way of compensation.

Claims (5)

1. railway truck electropneumatic brake system based on radio communication; It is characterized in that save on compartment with each at locomotive and be equipped with an embedded node, radio communication connects between the embedded node; All embedded node form wireless type master-slave network topological structure; Embedded node on the locomotive is a major joint, and the embedded node on the compartment is from node, and each embedded node comprises microprocessor, wireless communication module, power supply and brake actuator; Wireless communication module all is connected with microprocessor with brake actuator; Brake actuator comprises solid-state relay and the electromagnetic valve that is used to control train manage-style pressure, and the I/O mouth of microprocessor connects the input end of solid-state relay, and electromagnetic valve connects the mouth of solid-state relay.
2. the railway truck electropneumatic brake system based on radio communication according to claim 1; It is characterized in that; Described microprocessor adopts the ARM microprocessor, adopts the GSM-R communication to realize that communication connects between the embedded node, and electromagnetic valve is the 2/2-way electromagnetic valve.
3. the railway truck electropneumatic brake system based on radio communication according to claim 1 and 2 is characterized in that, described power supply adopts the storage battery of 18V, and storage battery is given electromagnetic valve through DC/DC voltage transformation module output 12V direct current.
4. railway truck Electropneumatic brake method based on radio communication; It is characterized in that; On locomotive and each joint compartment, be equipped with an embedded node, radio communication connects between the embedded node, and all embedded node form wireless type master-slave network topological structure; Embedded node on the locomotive is a major joint; Embedded node on the compartment is from node, and the major joint sending controling instruction is given respectively from node, and described control command comprises electromagnetic valve and opens and closes status data and electromagnetic valve unlatching or shut data; Drive the adjusting that the electromagnetic valve action is pressed with control train manage-style from node according to the control command that receives, thereby realize the alleviation and the braking in this compartment, node place; From the node synchronization action, finally realize the synchronous alleviation and the braking of whole railway truck through a plurality of.
5. the railway truck Electropneumatic brake method based on radio communication according to claim 4; It is characterized in that; Embedded node serves as the control core with the ARM microprocessor, the current employing GSM-R communication letter between the embedded node, and electromagnetic valve adopts the 2/2-way electromagnetic valve.
CN2010102836236A 2010-09-14 2010-09-14 Railway wagon electropneumatic brake system and method based on wireless communication CN101941382B (en)

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CN102275591A (en) * 2011-05-18 2011-12-14 南车长江车辆有限公司 Train brake wireless controlling system
CN102339049B (en) * 2011-07-20 2013-05-22 长沙南睿轨道交通电气设备有限公司 Distributed power remote wireless reconnection synchronous control method on basis of AC (alternate current) transmission locomotive
CN102490702A (en) * 2011-11-16 2012-06-13 智比特信息技术(镇江)有限公司 Train braking wireless control system
CN104590311B (en) * 2014-12-09 2017-10-13 南车株洲电力机车有限公司 Locomotive Brake System control device and method
CN104608754B (en) * 2015-02-05 2017-06-09 眉山中车制动科技股份有限公司 A kind of train radio electric pneumatic breaking control system and its control method
CN105151080B (en) * 2015-10-13 2018-02-27 南车株洲电力机车有限公司 A kind of multi-locomotive control method and its system
CN105539494B (en) * 2015-12-30 2018-01-26 中国铁道科学研究院 Vehicular brake device
CN106274988B (en) * 2016-09-13 2018-06-15 中国铁道科学研究院 The vehicle-mounted real time on-line monitoring system of train undesirable emergency braking, method and device
CN109735352A (en) * 2019-02-26 2019-05-10 柳州钢铁股份有限公司 Coke oven electric locomotive automatic Pilot comprehensive safety protection system

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CN101734246A (en) * 2008-11-14 2010-06-16 南车株洲电力机车有限公司 Synchronous control communication device for brake system of electric locomotive

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