CN107145141A - Locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control - Google Patents
Locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control Download PDFInfo
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- CN107145141A CN107145141A CN201710376787.5A CN201710376787A CN107145141A CN 107145141 A CN107145141 A CN 107145141A CN 201710376787 A CN201710376787 A CN 201710376787A CN 107145141 A CN107145141 A CN 107145141A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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Abstract
The invention discloses a kind of locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control.The control unit constitutes the core component of ECP system, it is made up of power module, interface module, I/O module, CPU control modules, communication module etc., using front leading-out mode, the work of the main HEU equipment for completing AAR4200 standards, communicate (such as CCU, brake) with other control sections on locomotive, obtains ECP system initialization and control order, and vehicle-state is collected, complete the function such as ECP fault diagnosises and ECP system running log record.ECU possesses MVB ports and is connected with locomotive bus, possesses synchronous high-speed RS 422 and asynchronous 422 communication interface, is connected with the BCU and display screen of brakes.
Description
Technical field
The present invention relates to a kind of locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control.
Background technology
World's track traffic is in the target development towards " heavy haul train, high speed passenger transportation ".But goods weight and train speed
The lifting of fortune causes locomotive to propose higher requirement in the effective unfailing performance of control for brake.Traditional Freight Car Braking System according to
Pneumatically transmits braking instruction, because braking propagation rate is low, the poor synchronization of each vehicle braking, causes train longitudinal impulse mistake
Greatly, influence train safety and operation efficiency.Synchronous control technique can be joined again using power distributed radio by solving problem above
Or train ECP electric pneumatic breaking technologies (LOCOTROL).
Although LOCOTROL technologies improve heavy-load combined train braking ability to a certain extent, fortune can be substantially met
Use condition.But unit car locomotive and each vehicle braking instruction remain certain time delay, it is impossible to fundamentally solve
Certainly each vehicle brakes nonsynchronous problem.
The content of the invention
Nonsynchronous technical problem is braked in order to solve current heavy-load combined train, the present invention provides a kind of based on MICROCOMPUTER NETWORK
The locomotive Electronically Controlled Pneumatic Brake Systems central control unit of network control.
In order to realize above-mentioned technical purpose, the technical scheme is that, a kind of locomotive electricity based on microcomputer network control
Control Pneumatic brake systems central control unit, including power module, I/O module, control module and communication module, described control
Module communicates to connect I/O module and communication module respectively, and described power module is I/O module, control module and communication module are supplied
Electricity；Described central control unit is installed on the locomotive and vehicle including train；
Described control module includes processor, extension CHIPDISK, bus extender module and dual port RAM, described place
Manage device to communicate to connect with extension CHIPDISK, bus extender module and dual port RAM respectively, bus extender module is communicatively connected to IO
Module, dual port RAM is communicatively connected to communication module.
A kind of described locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control, described IO
Module includes control chip, FPGA, output control circuit and digital input circuit, and described control chip is communicated to connect respectively
FPGA, output control circuit and digital input circuit, FPGA collection analog signalses.
A kind of described locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control, described is logical
Believe that module includes MVB communication modules, asynchronous 422 module and synchronous 422 modules, described MVB communication modules are connected to FPGA, institute
Asynchronous 422 module and synchronous 422 modules stated are connected to control chip.
A kind of described locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control, its feature exists
In described power module includes isolated from power modular converter, input connection 110V direct currents, and exports 15V and 5V direct currents
Electricity.
A kind of central control method of the locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, its feature exists
In based on described central control unit, comprising the following steps：
The central control unit being installed on the locomotive and vehicle including train is registered on locomotive network to build
Vertical central control unit information database, and distribute unique network address for each central control unit；Then by collated
Journey obtains positional information of any central control unit in train network, while system operating information is sent into all centers
Control unit, into normal operating conditions.
A kind of described central control method of locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, it is described
The central control unit being installed on the locomotive and vehicle including train is registered on locomotive network, including following step
Suddenly：
Send facility information querying command, unlocker device information inquiry response；
All subsidiary engine ECU of registration are subsidiary engine central control unit equipment, and distribute the network address；
All EPS equipment of registration, and distribute the network address；
All CCD or EOT equipment of registration, and distribute the network address.
During registration, manipulatable end (officials' generator terminal) for main frame ECU, non-manipulatable end (no driver) for subsidiary engine
ECU.ECU full name is Electrical Control Unit.EPS refers to Electrical Control Pneumatic
Power Supply, CCD refer to that Car Control Device, EOT refer to End of-Train Device.
A kind of described central control method of locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, it is described
Positional information of any central control unit in train network is obtained by sequencer procedure, comprise the following steps：
Sort the preparatory stage, the initialization of correlation is ranked up to equipment；
Vehicle phase sorting, the equipment of all participation sequences determines its relative position and direction in train；
Data collection phase, all sequence vehicles and locomotive report ranking results to master control ECU.
A kind of described central control method of locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, it is described
The sequence preparatory stage comprise the following steps：
(a) HEU broadcasts sequence warning order on train bus-line, initializes all equipment for participating in sequence；HEU refers to
Head End Unit。
(b) master control ECU orders 230Vdc train bus-line power-offs；
(c) master control ECU detects train-line power supply, and after less than 10Vdc, master control ECU order one's own jobs are the EPS of master control locomotive
Activate and be switched to 24Vdc powering modes；
(d) wait after preset time, ECU is detected and confirmed the 24Vdc voltages of train-line；
(e) ECU confirms that voltage is after 24Vdc, if the EPS of activation is on train locomotive, ECU starts car on train-line
Phase sorting；Otherwise, train locomotive perception stage is started.
A kind of described central control method of locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, it is described
Vehicle phase sorting comprise the following steps：
(a) master control ECU starts counting up electric current by all sequencing equipments of the networking command including CCD and subsidiary engine ECU
Pulse；
(b) ECU activates switching load by networking command subsidiary engine；
(c) subsidiary engine activates and disconnects switching load, and when switching load is activated, equipment requirement sends load by network and connected
It is informed of a case text；
(d) all equipment for participating in sequence access local train line current sensor and update sequencing information；
(e) disconnected in switching load in default time range, relevant device requires that sending load to ECU disconnects message；
(f) ECU is waited after preset time, according to train ECP device databases, and repeat step (b) arrives (f), until all
Equipment completes sequence, or sorting time exceedes preset time, into step (g)；
(g) ECU is counted by all sequencing equipment stop pulses of networking command.
A kind of described central control method of locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, it is described
Data collection phase comprise the following steps：
(a) master control ECU includes position counting, direction and the moving comprising vehicle node of each vehicle by network inquiry
Sorting position information including state address and physical address；
(b) after the inquiry for completing step (a), master control ECU terminates order to Web broadcast sequence；
(c) all CCD and EOT enable normal low-voltage and close logic to respond this order；
Complete after sequence, master control ECU recovers train-line power supply and powered for 230Vdc.
The technical effects of the invention are that, employ the through type Brake Control of microcomputer network control.A variety of communications
Mode, the integration of multimode forms a big network control system.During braking, train locomotive is by train network to whole
Vehicle sends braking instruction, and the deceleration of electrons control device of vehicle receives the control instruction of train locomotive simultaneously, realizes full row
Car synchronous braking, alleviation control.The main advantage of ECP system：A) braking distance is shortened：Shorten than conventional train control mode
50-60%；Join Synchronization Control train again than distributed wireless and shorten 40%.B) time of cyclic brake is shortened, row are improved
Car operation efficiency.C) train longitudinal impulse power is reduced：Reduce disconnected hook and derailing risk, reduce the destructive power to track, reduce wheel
The abrasion of rail and brake shoe.
Brief description of the drawings
Fig. 1 is structure total figure of the present invention；
Fig. 2 is internal structure scheme of installation of the present invention；
Fig. 3 is profile of the present invention and front panel schematic diagram；
Fig. 4 is power module theory diagram of the present invention；
Fig. 5 is I/O module theory diagram；
Fig. 6 is control module theory diagram；
Fig. 7 is communication module theory diagram；
Fig. 8 is sequence basic flow sheet；
Fig. 9 is sequence preparatory stage network data flow diagram；
Figure 10 is vehicle phase sorting network data flow diagram；
Figure 11 is data collection phase network data flow diagram.
Embodiment
The exploitation of the present invention is by project of national nature science fund project 61379111, and 61672537,61672539,
61402538,61403424,61602529,61502055 and 61503048, which provide part, supports.
The mode of operation of the leading control ECP system of the present invention and process conversion, and pass through the side of LonWorks networking commands
Formula is realized.Upon power-up of the system, ECU is defaulted as subsidiary engine state, and crew can be set ECU by LCDM and is used as one's own job state
Master control ECU, after ECU confirms other master controls ECU is not present in network, ECU enters one's own job state, while sending full application of brake, row
The closing of fare voltage, the LonWorks networking commands into initialization pattern.The effect of the present invention is almost through locomotive operation
Whole process, including system initialisation phase, facility registration, leading control sequence and its early-stage preparations and data collection phase.
Power module technology contents：Be control module by case back plate, interface module, I/O module 5V is provided, ± 15V electricity
Source；ECU short-circuit protection functions are provided；Input power is filtered.
I/O module is connected on control PC104, the institute of theory diagram such as 3 of I/O module on circuit board A by data/address bus
Show.Some digital quantities input (4 tunnel) on locomotive/output (4 tunnel) signal level conversion process interface circuit is provided；Locomotive speed is provided
Spend sensor pulse signal (2 tunnel) and count process circuit.
The control output channel circuit of I/O module is used as the break-make of switch control 110V voltages, the portion using high-power MOS FET
Parallel circuit uses the feedback effect of overcurrent protection, the features such as with self diagnosis, low fault rate, fast response time.
Described I/O module is realized and 3 road output control circuits is controlled using XC164 as control chip；Analog to digital conversion circuit
Digital input amount (optocoupler conversion) by XC164 and output par, c connection to monitor 4 road 24V/110V samplings, FPGA simulations
Spi bus operation ADS8344 realize analog acquisition (include 4-20mA electric current conversion values, outside input 0-5V voltages and
LonWorks current/voltage-converted value), while using the 4th road output control circuit, being compared by amplifier and realizing that train sorts
Function.The data of collection are stored in FPGA dual port RAM, for PC104 real-time, interactive data.
Output voltage is 110V to described I/O module output control circuit under normal circumstances, it is allowed to which maximum voltage exports model
Enclose for 130V, go beyond the scope, overvoltage is judged as by its self-diagnostic function, then causes output circuit to disconnect, it is ensured that safety；
When system electrification carries out vehicle sequence, output ranking circuit voltage is 24V, and current range is between 0.55~0.75A.
Described digital input circuit connects the signal of output circuit in the case where control signal is turned on, by dividing
Volt circuit, the conversion through opto-coupler chip is re-fed into single-chip microcomputer.It is different that the monitoring of this reaction type can effectively cope with output circuit
Normal situation.
Contain feedback circuit inside described output circuit, the suppression with inrush current, excessively stream and overload protection
Feedback effect and the function such as reverse polarity protection, the features such as with self diagnosis, low fault rate, fast response time.
FPGA model XC3S50-4TQ144I used, using main string configuration mode, FPGA is from outside Flash after upper electricity
Storage chip obtains program.The configuration mode, which has, employs minimum PIN pins, each configuration during interface simplicity, configuration
Position expense is minimum, most fast setup time between external storage PROM and FPGA, IO and JTAG multivoltages scope to be to maximize system
Flexibility, and can easily realize online upgrading product without dismounting product.
Described FPGA major functions are：Operational order, 8 tunnels analogy amount of translation of sampling are provided for analog/digital conversion module,
The memory space of the dual port RAM type of 1KB sizes is provided for sampled value using itself IP kernel, as itself and PC104 data interactions
When spatial cache；The memory space of the dual port RAM type formed by IP kernel is connected with control chip XC164, realize with
The data interaction of RS422 communication modules；As MVB interfaces, dual port RAM of the data storage that MVB networks are received and dispatched in 1KB sizes
In realize data interaction with PC104；I/O module is operated by bus extender module, with CAN data interaction.
The processor of control module is PC104, on circuit board B, (QNX systems is housed by extending CHIPDISK
System disk) realize log recording function, I/O data collection and output are realized by bus extender module, pass through dual port RAM real
Now with the data exchange of 422 communication modules.The structured flowchart of control module is as shown in Figure 7.
Described control module is instructed to processing system, generates system operation log recording, and operation I/O module data are read
Write and control；Data interaction is completed with EGU (LID), BCU, LCDM, BCU Stress control is instructed, LCDM setting instruction turns
Issue EGU.CCD, EOT, the subsidiary engine ECU signals in ECP system are handled, and status data is delivered into LCDM and is shown.
Described PC104 buses are a kind of industrial-controlled general lines defined exclusively for embedded Control.With small size
The characteristics of structure, stacking-type connection, light bus driver.A0~SA19 can realize that 16MB spaces are addressed plus LA17~LA23.
Data wire SD0~SD15, wherein SD0~SD7 is least-significant byte data, and SD8~SD15 is most-significant byte data.
Described PC104 and XC164 is in the electric pressing operations of 5V, and FPGA uses 3.3V voltages under main string pattern, in order to
Matching voltage, keep reliability, it is front and rear between employ voltage conversion circuit.
Interface module provides MVB communication interfaces, completes the data communication with CCU, BCU；High-speed synchronous RS422 communications are provided
Interface, completes the data communication with BCU；High-speed synchronous RS422 communication interfaces are provided, the data communication with LCDM is completed；There is provided
Asynchronous 422 communication interface, completes the data communication with EGU；Standby CAN communication interface.
Communication module mainly includes MVB communication modules, asynchronous 422 module etc., on circuit board B.Wherein MVB communicates
Module realizes network interface card function using FPGA, and 422 parts are by a Control on Communication CPU, using XC164 single-chip microcomputers.
Above-mentioned MVB communication modules and locomotive miscellaneous equipment are communicated to connect, the MVB communication modules mainly include one realize with
The dual port RAM of data exchange between MVB networks, and a MVB communication chip for realizing MVB network communications is i.e.
FPGA, and for sending and receiving the MVB network data transceivers of LON data, PC104 is connected by data with address bus
MVB communication chips realize the transmission-receiving function of MVB agreements.MVB communication chips are communicated to connect by MVB network data transceivers respectively
Intra-locomotive MVB networks.
Communication cpu realizes that the high speed based on HDLC is same by expanding communication control chip Z85230, additional 422 transceiver
Step 422.The communication interface of high-speed synchronous 422, completes the data communication with BCU and LCDM.Added by XC164 single-chip microcomputer two-way serial ports
Upper 422 transceiver realizes asynchronous 422.Asynchronous 422 communication interface, completes the data communication with EGU.MVB modules and Control on Communication
CPU realizes the data exchange with PC104 by dual port RAM.Two-way CAN is completed by opto-coupler chip 6N137 and CAN transceiver
Communicated with the XC164 in bus extender module.
Described high-speed synchronous RS422 uses XC164 single-chip microcomputers for host CPU, passes through expanding communication control chip Z85230
With 422/485 transceiver, the synchronous RS422 based on HDLC is realized, data are given Z85230 by single-chip microcomputer through 8 parallel ports, will simultaneously
Row data are converted into serial data, and transceiving data is converted into differential signal by 422/485 transceiver, data transfer is improved
Reliability, and CPLD selects transceiver channel to the decoding of single-chip microcomputer OPADD, realizes the transmitting-receiving of any byte.
Described CAN, synchronization RS422, asynchronous 422 are using the transmitting-receiving of data difference circuit realirations, it is ensured that data can be steady
Surely transmit.
The CAN communication is realized using twisted-pair feeder realizes the dual port RAM of data exchange, for realizing with outside CAN network
The controller XC164CS of data exchange and the CAN nets for sending and receiving CAN data are carried out between CAN network equipment
Network data collector is constituted, and wherein DPRAM is mainly used between PC104 and XC164 carry out exchanging for CAN data.XC164 is external
CAN transceiver circuit realiration two-way CAN interface.CAN communication chip connects system by CAN network data transceiver communications respectively
Internal CAN network, is communicated to connect by dual port RAM and communication controler；It is independent that the logical modules of CAN are divided into CANA and CANB two-way
CAN.
Internal CAN network communication is additional by the CAN functions and CAN controller chip SJA1000 carried inside single-chip microcomputer
CAN transceiver is realized.The data access received with both RS422 is in dual port RAM, when host CPU is to dual port RAM data storage amount
When reaching requirement, signaling-information is write to RAM signaling units, interruption is produced and informs that PC104 reads data, referred to performing other processing
Order.
Described LonWorks nodes are interface of the ECU units with HEU on network, and it contains two interfaces, respectively face
Information exchange is carried out to CCID vehicle control modules and with HEU.When from HEU instruction reach when, it be responsible for it is received and
Processing, is then delivered to vehicle control module, completes the braking or alleviation of locomotive.In addition it can also be by LonWorks networks
The data of CCD transmission are sent to HEU, the situation current to this section vehicle is monitored in real time.Simultaneously when some equipment of vehicle
During cisco unity malfunction, vehicle control module can utilize CID to send failure alarm signal to HEU by LonWorks buses.
Described LonWorks communications include two kinds of mode of operations：Complete automatic test, the manual test of single step.Using
Power carrier, realizes the transmission of power supply and data on cable.The system is used as neuron core using the PL3150 of Echelon companies
Piece, perform LonTalk agreements, more complicated coding/decoding array so that be transferred to train data obtain reliably, real-time guarantees.
Meanwhile, acquisition module is also included in this system design, 8 tunnel collection values are had.These information gathering values include
The speed acquisition value that the transmission such as voltage acquisition value and locomotive speed sensor that Lonworks is converted comes.Each acquisition channel
Between be mutually independent of each other, and conversion accuracy is high, conversion speed is fast.And have quarantine measures between being measured before and after collection, will not be to it
He produces influence by relating module.System schema scantling plan is as shown in Figure 1.
Described ECU units are applied to electric controlled brake system, centralized Pneumatic brake systems different from the past, electric signal
In speed transmission quickly, up to a hundred groups of train synchronization braking can be achieved.Locomotive and vehicle are respectively arranged with this control unit, cause each
Individual car body can be exported according to the actual load-carrying regulating brake force of oneself, realize braking procedure more steady, effectively and one
The characteristics of cause, belong to typical distributed brake.
ECU internal structures use double panel structure, and wherein power module, I/O module has made one piece of circuit board A, will
MVB, velocity sensor pulse count signal process circuit, synchronous 422 circuits, communication control chip etc. make one piece of circuit board B,
And it is connected by socket with PC104.The wherein 5V of power module output, 15V signals are connected to circuit board B by flexible cord, electricity
Signal between road plate A and circuit board B is transmitted by contact pin, and centre is supported with copper post.Specific schematic diagram is as shown in Figure 2.
ECU exterior views are as shown in figure 3, using front leading-out mode, bottom, which is installed, to be fixed.Plug on panel is defined as follows：
T1 is attaching plug, and T2 and T6 is two 422 plugs, and T3 and T4 is two MVB plugs, and T5 is I/O signal plug, and T7 is speed
Signal plug, T9 is debugging plug, and T10 is CAN communication interface, and S1 is a row indicator lamp, indicates respectively ECU power supply status,
MVB communications status, 422 communications status etc..
Described plug uses aviation plug, as the electromechanical compo of connection electric wiring, with anti-flammability and
The features such as self-extinguishment is good, resistance to pressure is high, plug is easy, mechanical life is higher.
1. power module
Power module design is on circuit board A, using reliable and stable modular power source, includes wave filter, 110V and turns 15V
Module, 110V turns 5V modules, the module such as short-circuit protection device.Module frame chart is as shown in Figure 4.
2.IO modules
I/O module is connected to above control PC104, the principle of I/O module on design circuit board A by data/address bus
Block diagram is as shown in Figure 5.
3. control module
As the processor of control module, PC104 have dimensional structure it is small, can extending space, bus driver be convenient easily
The features such as.PC104 is arranged on circuit board B, and expanded CHIPDISK realizes log recording function, real by bus extender module
Existing I/O data acquisitions and output, the data exchange with 422 communication modules is realized by dual port RAM.Expand additionally by SJA1000
Open up CAN communication interface.The theory diagram of CPU module is as shown in Figure 6.
4. communication module
Communication module mainly includes MVB communication modules and synchronous 422 modules, asynchronous 422 module, on circuit board B.Wherein
MVB realizes part that 422 parts are intended using XC164 single-chip microcomputers by a Control on Communication CPU using FPGA.Communication cpu is by expanding
Communication control chip Z85230 is opened up, in addition plus 422 transceivers, synchronous 422 based on HDLC are realized.Pass through XC164 single-chip microcomputers
Two-way serial ports realizes asynchronous 422 plus 422 transceivers.MVB modules are realized and PC104 with Control on Communication CPU by dual port RAM
Data exchange.The theory diagram of communication module is as shown in Figure 7.
5. rate signal acquisition module
Rate signal is frequency pulse signal, after velocity pick-up signal acquisition module is by modulate circuit, is controlled using communication
CPU processed counter realizes that velocity pulse is counted.
The plug model of table 1 and pin assignments
| Plug is numbered | Socket model | Remarks |
| T1 | XC18F4Z1D1 | Attaching plug |
| T2 | XC22F10Z1D1 | The plug of synchronous/asynchronous 422 |
| T6 | XC22F10Z1D1 | The plug of synchronous/asynchronous 422 |
| T3 | DB9 | MVB plugs (public affairs) |
| T4 | DB9 | MVB plugs (mother) |
| T9 | XC24F19Z1D1+FJBP | Debug plug |
| T5 | XC24F19Z1D1+FJBP | I/O signal plug |
| T7 | XC22F10Z1D1 | Rate signal plug |
| T8 | XC24F19Z1D1+FJBP | Synchronous 422 plugs |
| T10 | XC22F10Z1D1 | CAN communication interface |
The attaching plug T1 pins of table 2 are defined
| Pin numbering | Function is described |
| 1 | It is standby |
| 2 | DC110V |
| 3 | DC110V+ |
| 4 | DC110V on-positions are shown |
| Shell | Shielding |
The MVB of table 3 communication T3 pins male definition
| Pin numbering | Function is described |
| 1 | A1.Data_P |
| 2 | A1.Data_N |
| 4 | B1.Data_P |
| 5 | B1.Data_N |
| 6 | A.Term_P |
| 7 | A.Term_N |
| 8 | B.Term_P |
| 9 | B.Term_N |
The MVB of table 4 communication T4 pins female definition
| Pin numbering | Function is described |
| 1 | A2.Data_P |
| 2 | A2.Data_N |
| 4 | B2.Data_P |
| 5 | B2.Data_N |
| 6 | A.Term_P |
| 7 | A.Term_N |
| 8 | B.Term_P |
| 9 | B.Term_N |
The CAN communication T10 pins of table 5 are defined
| Pin numbering | Function is described |
| 1 | CAN_A_H |
| 2 | CAN_A_L |
| 3 | CAN_A_GND |
| 4 | CAN_B_H |
| 5 | CAN_B_L |
| 6 | CAN_B_GND |
| 7~10 | It is standby |
The debugging interface T9 pins of table 6 are defined
The I/O signal plug T5 pins of table 7 are defined
| Pin numbering | Function is described |
| 1 | 110GND |
| 2 | It is standby |
| 3 | I1 |
| 4 | I2 |
| 5 | I3 |
| 6 | I4 |
| 7 | I5 |
| 8 | I6 |
| 9 | I7 |
| 10 | I8 |
| 11 | It is standby |
| 12 | O1 |
| 13 | O2 |
| 14 | O3 |
| 15 | O4 |
| 16~19 | It is standby |
The synchronous 422 plug T8 pins definition of table 8
Table 9 it is synchronous the definition of asynchronous communication T2, T6 pin
| Pin numbering | Function is described |
| 1 | RX+ |
| 2 | RX- |
| 3 | RCX+ |
| 4 | RCX- |
| 5 | TX+ |
| 6 | TX- |
| 7 | TCX+ |
| 8 | TCX- |
| 9 | Shielding line |
| 10 | It is standby |
The rate signal T7 pins of table 10 are defined
| Pin numbering | Function is described |
| 1 | The power supply 15V of passage 1 |
| 2 | The frequency signal of passage 1 |
| 3 | Shielding line |
| 4-7 | It is standby |
| 8 | The power supply 15V of passage 2 |
| 9 | The frequency signal of passage 2 |
| 10 | Shielding line |
System initialization mode sets up network equipment information database by the process by ECU controls in ECU, for net
Network equipment distributes unique network address, and obtains positional information of the arbitrary equipment in train network by sequencer procedure.Together
When, system operating information is sent to all-network equipment by ECU, includes sky/weight information, brake pipe level pressure and the train of vehicle
NBR parameters.
Facility registration is that master control ECU obtains network equipment information, sets up equipment information database and for each network equipment
Distribute the process of unique network address.Facility registration includes following five steps：
Send facility information querying command, unlocker device information inquiry response.
All subsidiary engine ECU equipment of registration, and distribute the network address.
All EPS equipment of registration, and distribute the network address.
All CCD or EOT equipment of registration, and distribute the network address.
Complete registration.
Sequence is dominated and controlled by master control ECU, and all vehicles are obtained relative to master control ECU by LonWorks network instructions
Relative position and direction.
Sort the preparatory stage
The sequence preparatory stage is ranked up the initialization of correlation to equipment.Sort the preparatory stage, ECU completes following work：
(a) HEU broadcasts all equipment for participating in sequence of sequence warning order initialization on train bus-line.Refer to respond this
Order, CCD and EOT can not use their normal low battery shut-off logic, and the device reset position counting of participation sets orientation shape
State is unknown, and it is "false" to set train locomotive sense state.
(b) ECU orders 230VDC train bus-line power-offs.
If (c), ECU detects after 30 seconds train-line voltage and appointed and is so more than 10Vdc, it is desirable to provide an operational order or
Alert to interrupt sequence.After confirming that train-line power supply is less than 10Vdc, ECU order train locomotives EPS is activated and is switched to
24Vdc powering modes.
(d) after waiting at least 5 seconds, ECU is detected and is confirmed the 24Vdc voltages of train-line.
(e) ECU confirms that voltage is after 24Vdc, if the EPS of activation is on train locomotive, ECU starts car on train-line
Phase sorting；Otherwise, train locomotive perception stage is started.
The requirement sorted to train power supply：
Output voltage：Specified 24Vdc (22.8V~30V)；
Output current scope：0~1.0A；
Output impedance：It is not less than 500 Ω in 100kHz to 450KHz frequency ranges；
Current-limiting protection：When 24Vdc is exported, power supply can provide current-limiting protection (maximum 1.0A) and short-circuit protection；
Outside control：Train power supply needs to provide at least two-way input signal, realizes and exports electricity to 230Vdc and 24Vdc
The selection of pressure and enable.
Vehicle phase sorting
Its relative position and direction in train is determined in all sequencing equipments of vehicle phase sorting.Vehicle sequence rank
The flow of section is as shown in Figure 10.
(h) ECU starts counting up current impulse by all sequencing equipments of networking command.
(i) ECU activates switching load by networking command subsidiary engine.
(j) subsidiary engine activates according to " requirement of sequence common software " and disconnects switching load, the equipment when switching load is activated
It is required that sending load connection message by network.
(k) all equipment for participating in sequence access local train line current sensor according to " requirement of sequence common software "
And update sequencing information.
(l) in the time range that switching load disconnects minimum 50ms to maximum 150ms, relevant device requires to send out to ECU
Load is sent to disconnect message.
(m) ECU waits minimum 50ms.
(n) ECU is according to train ECP device databases, and repeat step (b) arrives (f).
(o) ECU is counted by all sequencing equipment stop pulses of networking command.
Data collection phase
In data collection phase, all sequence vehicles and locomotive report ranking results to master control ECU.Data collection phase
Flow it is as follows：
(d) other sequences that master control ECU is defined by the position counting of each vehicle of network inquiry, direction and S-4230
Positional information.
(e) after the inquiry for completing step (a), master control ECU terminates order to Web broadcast sequence.All CCD and EOT make
Normally low-voltage it can close logic to respond this order.
(f) complete after sequence, master control ECU recovers train-line power supply and powered for 230Vdc.
Claims (10)
1. a kind of locomotive Electronically Controlled Pneumatic Brake Systems central control unit based on microcomputer network control, it is characterised in that including
Power module, I/O module, control module and communication module, described control module communicate to connect I/O module and communication mould respectively
Block, described power module is powered for I/O module, control module and communication module；Described central control unit be installed on including
On the locomotive and vehicle of train；
Described control module includes processor, extension CHIPDISK, bus extender module and dual port RAM, described processor
Communicated to connect respectively with extension CHIPDISK, bus extender module and dual port RAM, bus extender module is communicatively connected to IO moulds
Block, dual port RAM is communicatively connected to communication module.
2. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 1 is single
Member, it is characterised in that described I/O module includes control chip, FPGA, output control circuit and digital input circuit, described
Control chip communicate to connect FPGA, output control circuit and digital input circuit respectively, FPGA collection analog signalses.
3. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 2 is single
Member, it is characterised in that described communication module includes MVB communication modules, asynchronous 422 module and synchronous 422 modules, described
MVB communication modules are connected to FPGA, and described asynchronous 422 module and synchronous 422 modules are connected to control chip.
4. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 1 is single
Member, it is characterised in that described power module includes isolated from power modular converter, input connection 110V direct currents, and exports
15V and 5V direct currents.
5. a kind of central control method of the locomotive Electronically Controlled Pneumatic Brake Systems based on microcomputer network control, it is characterised in that
Based on any described central control units of claim 1-4, comprise the following steps：
The central control unit being installed on the locomotive and vehicle including train is registered with foundation on locomotive network
Control unit information database is entreated, and unique network address is distributed for each central control unit；Then obtained by sequencer procedure
Positional information of any central control unit in train network is taken, is controlled while system operating information is sent into all centers
Unit, into normal operating conditions.
6. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 5 is real
Existing method, it is characterised in that it is described by the central control unit being installed on the locomotive and vehicle including train in locomotive network
Registered, comprised the following steps on network：
Send facility information querying command, unlocker device information inquiry response；
All subsidiary engine ECU of registration are subsidiary engine central control unit equipment, and distribute the network address；
All EPS equipment of registration, and distribute the network address；
All CCD or EOT equipment of registration, and distribute the network address.
7. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 5 is real
Existing method, it is characterised in that described that position letter of any central control unit in train network is obtained by sequencer procedure
Breath, comprises the following steps：
Sort the preparatory stage, the initialization of correlation is ranked up to equipment；
Vehicle phase sorting, the equipment of all participation sequences determines its relative position and direction in train；
Data collection phase, all sequence vehicles and locomotive report ranking results to master control ECU.
8. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 7 is real
Existing method, it is characterised in that the described sequence preparatory stage comprises the following steps：
(a) HEU broadcasts sequence warning order on train bus-line,All equipment for participating in sequence of initialization；
(b) master control ECU orders 230Vdc train bus-line power-offs；
(c) master control ECU detects train-line power supply, after less than 10Vdc, and master control ECU order one's own jobs are the EPS activation of master control locomotive
And it is switched to 24Vdc powering modes；
(d) wait after preset time, ECU is detected and confirmed the 24Vdc voltages of train-line；
(e) ECU confirms that voltage is after 24Vdc, if the EPS of activation is on train locomotive, ECU starts vehicle row on train-line
The sequence stage；Otherwise, train locomotive perception stage is started.
9. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 7 is real
Existing method, it is characterised in that described vehicle phase sorting comprises the following steps：
(a) master control ECU starts counting up current impulse by all sequencing equipments of the networking command including CCD and subsidiary engine ECU；
(b) ECU activates switching load by networking command subsidiary engine；
(c) subsidiary engine activates and disconnects switching load, and when switching load is activated, equipment requirement sends load connection report by network
Text；
(d) all equipment for participating in sequence access local train line current sensor and update sequencing information；
(e) disconnected in switching load in default time range, relevant device requires that sending load to ECU disconnects message；
(f) ECU is waited after preset time, and according to train ECP device databases, repeat step (b) arrives (f), until all devices
Sequence is completed, or sorting time exceedes preset time, into step (g)；
(g) ECU is counted by all sequencing equipment stop pulses of networking command.
10. a kind of locomotive Electronically Controlled Pneumatic Brake Systems center control based on microcomputer network control according to claim 7
Implementation method, it is characterised in that described data collection phase comprises the following steps：
(a) master control ECU by the position counting of network inquiry including each vehicle, direction and comprising vehicle node dynamically
Sorting position information including location and physical address；
(b) after the inquiry for completing step (a), master control ECU terminates order to Web broadcast sequence；
All CCD and EOT enable normal low-voltage and close logic to respond this order；
(c) complete after sequence, master control ECU recovers train-line power supply and powered for 230Vdc.
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