CN1323002C - Logic controller for railway locomotive - Google Patents
Logic controller for railway locomotive Download PDFInfo
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- CN1323002C CN1323002C CNB2004100608189A CN200410060818A CN1323002C CN 1323002 C CN1323002 C CN 1323002C CN B2004100608189 A CNB2004100608189 A CN B2004100608189A CN 200410060818 A CN200410060818 A CN 200410060818A CN 1323002 C CN1323002 C CN 1323002C
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Abstract
The present invention relates to a logic controller for a railway locomotive, which is composed of a main control board, an input board, an output board and a power board. The present invention is characterized in that the main control board, the input board and the output board carry out two-way communication through CAN (a control local area network) buses, and the output board uses MOS tubes to drive the controlled locomotive appliance. The present invention uses an embedded monolithic computer system and a CAN (a control local area network) bus technology, and whole combinational logic cured software uses a PLC logic ladder diagram structure and is easy to be read and understood. After a logic control unit is used, the design, the production and the debugging of a control circuit of the locomotive can be simplified. The simplification of the control circuit of the appliance can increase the reliability of control systems, and simultaneously, the vibration resisting performance of microcomputers and electronic control systems is obviously superior to that of traditional relay contact control systems.
Description
The invention belongs to a kind of railway locomotive control setup, is a kind of railway locomotive logic control device specifically.
Background technology
The locomotive electric cad system control path adopts traditional relay contactor control circuit always for a long time.The realization of locomotive logical relation is by switch, the secondary contact of contactless switch, and finish through modes such as connection in series-parallel the contact of intermediate relay, time relay, pressure relay etc.Sort circuit is under the many working environments of the big dust of vibration, and reliability is poor.Particularly bring up to 120KM/h when above at locomotive speed, because the locomotive vibration aggravation, the misoperation of relay contact control system obviously increases.Line contacts is many, and the line failure rate height is searched with the drawback of processing circuitry fault difficulty more and more outstanding.
If replace traditional relay contactor control circuit with programmable logic controller (PLC) (PLC), but because the relay contactor control circuit of locomotive has many particularity; Control voltage is direct current 110V, the load current maximum of relay can reach nearly 5A, work under bad environment or the like, according to the IEC standard, general PLC operating voltage is DC24V or AC220V, the load-carrying capacity of direct current output point is lower, the locomotive microcomputer control system mostly adopts the mini type mechanical relay that drives direct current 24V both at home and abroad, drive the multistage type of drive of 110V intermediate relay again with the mini type mechanical relay, general industry fundamentally do not solve problems such as circuit is loaded down with trivial details, so can't directly be used with PLC on locomotive.
Summary of the invention
The purpose of this invention is to provide a kind of chain round about circuit that replaces the complexity between the low-voltage electrical apparatus such as original time relay, intermediate relay and each relay on the locomotive, and the railway locomotive logic control device that is used for the logic control of electric locomotive car load of the communication interface of reservation and locomotive microcomputer network, to overcome above-mentioned deficiency.
To achieve these goals, the present invention is made of master control board, tablet, output board and power panel, is characterized in: adopt CAN (control area net) bus to carry out intercommunication between master control board, tablet, the output board;
Above-mentioned master control board is made of Controlled CPU 1 (Central Processing Unit (CPU)), communication CPU2 and public RAM (memory device), and wherein public RAM is connected with communication CPU2 with Controlled CPU 1 respectively, and communication CPU2 is connected with output board with tablet by the CAN bus;
Above-mentioned tablet is made of CPU3, testing circuit and communicating circuit, wherein the testing circuit input end receives the service condition signal of each electrical equipment of locomotive, its mouth is connected with the data line of CPU3, and CPU3 is connected with communication CPU2 in the master control board by communicating circuit;
Above-mentioned output board is made of CPU4, driving circuit and communicating circuit, and wherein the driving circuit input end is connected with the control line of CPU4, and its mouth is used to connect each electrical equipment actuating unit of locomotive, and CPU4 is connected with communication CPU2 in the master control board by communicating circuit;
Above-mentioned tablet and output board have two covers at least, and circuit is to isolate mutually between each tablet or the output board;
The above-mentioned control part of being made up of master control board, tablet and output board has two groups of A, B, and one group of backup as another group is connected by a change-over panel between two groups of A, the B, switches by change-over panel between two groups of A, the B;
Communication CPU2 also carries out communication by CAN bus and external equipment (as read out instrument, operator's station etc.) in the above-mentioned master control board.
Logic control device of the present invention is to aim at Domestic Electric, design and develop, the intelligent logic control device of new generation of diesel locomotive.The locomotive logic control device has adopted embedded single-chip computer system and CAN (control area net) bussing technique, and whole combinatory logic solidification software adopts the logic ladder diagram structure of PLC formula, readability, understandable.After adopting logic control element (Logical Control Unit-is called for short LCU), can simplify design, production and the debugging of locomotive control circuit.The simplification of electrical control circuit can improve the reliability of control system, and the anti-vibration performance of microcomputer and electronic control system obviously is better than traditional relay contact control system simultaneously.
Railway locomotive adopts logic control element (Logical Control Unit-is called for short LCU), realize that contact pointless control is to improve locomotive electric cad system control path reliability, LCU utilizes modern power electronics technology and micro-computer technology to constitute the traditional relay contactor control circuit of non-contact control circuit replacement, with the instruction direct drive contactless switch even load that microcomputer sends, avoid present multistage type of drive.Like this, can simplify the contactor control circuit of locomotive greatly, reduce aerial lug, improve the reliability of system; Also can simplify the design of locomotive control greatly, improve the alerting ability that Control System Design is made, shorten the time of locomotive electric apparatus system design, debugging, realize the commonality of control system.LCU can also be by fieldbus and the communication of vehicle-mounted microcomputer control system simultaneously, realize resource sharing, the switching value of realization complexity that can be more or less freely and analog quantity mixed logic control relation, need not increase hardware circuit in addition, fully play the advantage of LCU and microcomputer, also can on the locomotive microcomputer read-out, carry out fault demonstration and menu in Chinese prompting, made things convenient for driver operation, be beneficial to fault and look into and remove, thereby make locomotive control really enter one than higher level.
Description of drawings
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is a master control board functional block diagram of the present invention.
Fig. 3 is a tablet functional block diagram of the present invention.
Fig. 4 is an output board functional block diagram of the present invention.
Fig. 5 is a power panel functional block diagram of the present invention.
Fig. 6 is a change-over panel functional block diagram of the present invention.
Fig. 7 is driving circuit schematic circuit diagram of the present invention.
Fig. 8 is driving circuit positive and negative terminal control conection figure of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described, but this embodiment should not be construed as limitation of the present invention.
Hardware configuration of the present invention (Fig. 1) mainly comprises chassis power supply, tablet, output board, master control board etc.
Master control board of the present invention (Fig. 2) (Fig. 2) adopts dual-cpu structure, CPU2 be responsible for specially comprise with the input/output board communication and with external equipment communication (hereinafter to be referred as communication CPU2), another CPU1 is responsible for logic operation specially, output state is determined (hereinafter to be referred as Controlled CPU 1), carries out swap data by a dual port RAM between two CPU.The entrance point state that communication CPU2 will receive from tablet and the information of external equipment are put into dual port RAM, Controlled CPU 1 is determined output state read relevant information from dual port RAM after, output state after will determining is simultaneously also put into dual port RAM, and communication CPU2 reads output state from dual port RAM and send output board to export.
Tablet of the present invention (Fig. 3) is mainly finished the entrance point status detection, the switching value information direct current 110V of driver operation command signal, locomotive electric apparatus is converted to digital signal, again by functions such as fieldbus and master control board exchange messages.Tablet by CPU,, input test section, input state indicator lamp and communication part are formed.The direct current 110V incoming signal that comes from the auxiliary contact of driver controller, locomotive electric apparatus resistance network step-down, stabilivolt amplitude limit, capacitor filtering, the photoelectricity of part after testing inputs to CPU3 after isolating, and drives the input state indicator lamp simultaneously.CPU3 is sent out detected information by communicating circuit, use for master control board.
Output board of the present invention (Fig. 4) mainly is to carry out driving condition and by functions such as fieldbus and master control board exchange messages.Output board is made up of CPU4, output driving circuit, output state indicator lamp, output fault-indicating lamp and communicating circuit.Output board drives output state indicator lamp and output driving circuit by the output state that communicating circuit receives behind the determining that master control board communication CPU2 transmits.When the outer loop phenomenon that breaks down causes the excessive then output driving circuit of electric current automatically output loop to be disconnected to export fault-indicating lamp simultaneously bright, fault is arranged to point out this loop.Output driving circuit is switched on or switched off load with the driving order of CPU4 by isolating amplification rear drive MOSFET.
The output driving circuit principle is seen Fig. 7, output driving circuit mainly is made of phase inverter, optocoupler and metal-oxide-semiconductor, wherein the input end of phase inverter is connected with the control line mouth of CPU4 in the output board, its mouth is connected with the input end of optocoupler, the output of optocoupler is by the conducting of the peripheral circuit control metal-oxide-semiconductor of metal-oxide-semiconductor, and the output of metal-oxide-semiconductor is used to control the break-make of locomotive electric apparatus actuating unit.The drive signal that CPU4 comes is isolated independently power drives LED1_GRN indicator lamp of relief through the anti-phase optocoupler that drives afterwards of phase inverter through photoelectricity.Output driving circuit both can anode control also can be controlled (Fig. 8) by negative terminal, and when anode was controlled, the INPUT pin is the power connection anode always, as long as CPU4 has drive signal, the OUTPUT pin just has output.When negative terminal was controlled, the INPUT pin connect the output line of load, OUTPUT pin power connection ground.In order to protect metal-oxide-semiconductor, drain electrode is provided with protective circuit.
Logic control element of the present invention comprises two groups of the identical A of function, B, and can realize automaticallying switch and manual switchover by change-over panel.Employing standard 6U cabinet hardware configuration can carry out the CAN bus communication with external equipment.Connector is 3 AMP62 core needle sockets, wherein imports 2, exports 1.The input and output of every road all have status indicator lamp, and delivery channel is provided with short-circuit protection function and short-circuit protection status indicator lamp simultaneously.
Change-over panel of the present invention (Fig. 6) is a hardware circuit of realizing the handoff functionality of A, B group, and it makes LCU realize manual switchover (cold spare) and the Redundancy Design of automatically switch (hot spare).Change-over panel is made up of two transfer relays, and when A or the work of B group, a transfer relay must not, its normally closed anti-interlocking is connected the output driving power of this group, and another relay gets electric disconnection, and its normally closed anti-interlocking disconnects, thereby disconnects other one group output driving power.LCU control transformation switch is circuit direct control transfer relay in A group or B group, the time manual switchover function of realization; When automatic position, two transfer relays are controlled by LCU, thereby realize automatic switching function.
Power panel of the present invention (Fig. 5) provides the working power of 5V to whole device, carries overcurrent, overvoltage, defencive function such as overheated, has high reliability and perfect defencive function.Power panel has two independently DC110V/DC5V power supplys, and each power supply all has power light, and its 5V indicator lamp is bright when power supply has output.
Whole system operation of the present invention relies on master control board to finish, if LCU control transformation switch is when automatic position, the master control board of A group is in running order, automatically from A choose correct switching value input state the tablet of B group and determine output state, if output state then carries out the switching of output board to guarantee the correctness of output state automatically with definite state is inconsistent.If LCU control transformation switch is when A group or B group, selection the time should group master control board and output board, still realize its importation is the correct switching value incoming signal of identification automatically.
The content that is not described in detail in the specification sheets of the present invention belongs to this area professional and technical personnel's known prior art.
Claims (8)
1, a kind of railway locomotive logic control device is made of master control board, tablet, output board and power panel, it is characterized in that: adopt the CAN bus to carry out intercommunication between master control board, tablet, the output board.
2, railway locomotive logic control device as claimed in claim 1, it is characterized in that: master control board is made of Controlled CPU 1, communication CPU2 and public RAM, wherein public RAM is connected with communication CPU2 with Controlled CPU 1 respectively, and communication CPU2 is connected with output board with tablet by the CAN bus.
3, railway locomotive logic control device as claimed in claim 1, it is characterized in that: tablet is made of CPU3, testing circuit and communicating circuit, wherein the testing circuit input end receives the service condition signal of each electrical equipment of locomotive, its mouth is connected with the data line of CPU3, and CPU3 is connected with communication CPU2 in the master control board by communicating circuit.
4, railway locomotive logic control device as claimed in claim 1, it is characterized in that: output board is made of CPU4, driving circuit and communicating circuit, wherein the driving circuit input end is connected with the control line of CPU4, its mouth is used to connect each electrical equipment actuating unit of locomotive, and CPU4 is connected with communication CPU2 in the master control board by communicating circuit.
5, railway locomotive logic control device as claimed in claim 1, it is characterized in that: tablet and output board have two covers at least, and circuit is to isolate mutually between each tablet or the output board.
6, railway locomotive logic control device as claimed in claim 1, it is characterized in that: the control part of being made up of master control board, tablet and output board has two groups of A, B, one group of backup as another group, be connected by a change-over panel between two groups of A, the B, switch by change-over panel between two groups of A, the B.
7, railway locomotive logic control device as claimed in claim 4, it is characterized in that: the output board driving circuit mainly is made of phase inverter, optocoupler and metal-oxide-semiconductor, wherein the input end of phase inverter is connected with the control line mouth of CPU4 in the output board, its mouth is connected with the input end of optocoupler, the output of optocoupler is by the conducting of the peripheral circuit control metal-oxide-semiconductor (T1) of metal-oxide-semiconductor, and the output of metal-oxide-semiconductor is used to control the break-make of controlled locomotive electric apparatus actuating unit.
8, railway locomotive logic control device as claimed in claim 1 is characterized in that: communication CPU2 also carries out communication by CAN bus and external equipment in the master control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100608189A CN1323002C (en) | 2004-09-09 | 2004-09-09 | Logic controller for railway locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100608189A CN1323002C (en) | 2004-09-09 | 2004-09-09 | Logic controller for railway locomotive |
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| CN1586958A CN1586958A (en) | 2005-03-02 |
| CN1323002C true CN1323002C (en) | 2007-06-27 |
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| CNB2004100608189A Active CN1323002C (en) | 2004-09-09 | 2004-09-09 | Logic controller for railway locomotive |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100470411C (en) * | 2005-08-25 | 2009-03-18 | 比亚迪股份有限公司 | Four-wheel drive control system for pure electric automobile |
| CN101848158B (en) * | 2010-05-18 | 2013-09-25 | 深圳市恒扬科技有限公司 | Load balance method and device for data channels and network exchange equipment |
| CN101936110B (en) * | 2010-08-27 | 2013-07-03 | 东南大学 | Intelligent door control system for rail train doors |
| CN102054330A (en) * | 2010-12-02 | 2011-05-11 | 北京交通大学 | Embedded disaster monitoring device |
| CN102536033B (en) * | 2011-12-23 | 2014-07-16 | 南京理工大学 | Intelligent door control system of rail train |
| CN103213588A (en) * | 2013-04-01 | 2013-07-24 | 长沙铁山轨道交通科技有限公司 | Locomotive intermediate electric controller |
| CN104192153B (en) * | 2014-08-01 | 2017-11-14 | 深圳通业科技股份有限公司 | track train controller |
| CN106327846A (en) * | 2016-08-22 | 2017-01-11 | 合肥德泰科通测控技术有限公司 | Railway detection data connector |
| CN106428045B (en) * | 2016-12-08 | 2018-06-22 | 中车株洲电力机车有限公司 | A kind of city rail vehicle and city rail vehicle electric control system |
| FR3098662B1 (en) * | 2019-07-10 | 2021-10-15 | Alstom Transp Tech | CONTROL PROCEDURE FOR A SWITCHING BODY AND ASSOCIATED DEVICES |
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| US4453156A (en) * | 1981-12-11 | 1984-06-05 | Brown, Boveri & Co. Ag | Load control receiver and method of operation |
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| CN1586958A (en) | 2005-03-02 |
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Owner name: WUHAN ZHENGYUAN ELECTRIC CO., LTD. Free format text: FORMER NAME: ZHENGYUAN RAILWAY ELECTRIC CO., LTD., WUHAN |
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Address after: 430012, No. 5, Shiqiao Road, Jiang'an District, Hubei, Wuhan Patentee after: WUHAN ZHENGYUAN ELECTRIC CO., LTD. Address before: 430012 No. 151 exhumation section, Jiang'an District, Hubei, Wuhan Patentee before: Wuhan Zhengyuan Railroad Electrical Co., Ltd. |