CN102602387B - Electronic controller for high-speed train braking - Google Patents
Electronic controller for high-speed train braking Download PDFInfo
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- CN102602387B CN102602387B CN201110025885.7A CN201110025885A CN102602387B CN 102602387 B CN102602387 B CN 102602387B CN 201110025885 A CN201110025885 A CN 201110025885A CN 102602387 B CN102602387 B CN 102602387B
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Abstract
The invention provides an electronic controller for high-speed train braking, which comprises a main control unit (10), a communication unit (20) and a signal conditioning unit (30). The communication unit (20) is connected with a train control device through an optical fiber and used for receiving braking commands sent by the train control device and converting the braking commands into switching value input signals, the signal conditioning unit (30) is used for conditioning the switching value input signals, pressure sensing signals and speed sensing signals, the main control unit (10) is used for generating anti-slipping control signals according to the speed sensing signals after receiving the switching value input signals, transmitting the anti-slipping control signals conditioned by the signal conditioning unit (30) to an anti-slipping vale, generating electric pneumatic control signals according to the pressure sensing signals and transmitting the electric pneumatic control signals conditioned by the signal conditioning unit (30) to an electric pneumatic valve. The electronic controller for high-speed train braking is simple and compact in structure, high in cost performance and high in reliability and has train network braking command transmission function.
Description
Technical field
The present invention relates to a kind of high-speed train braking electronic controller, for microprocessor through electro-pneumatic braking system, belong to the braking control system technical field in bullet train.
Background technology
Electricity is empty, and (Electro-Pneumatic is called for short: EP) brakes, i.e. Electronically Controlled Pneumatic Brake Systems are the braking control systems installing the electric controling parts such as magnetic valve additional and formed on the basis of air damper.Be used widely in bullet train.But the existing braking electronic controller for microprocessor through electro-pneumatic braking system still has the following disadvantages:
1, do not have anti-sliding control function, the Detection & Controling of wheel sliding are controlled by Special anti-skid device;
2, receive the brake command signal from train central control unit by redundancy hardwired, wiring is complicated;
3, brake-cylinder pressure is controlled by high-speed switch electromagnetic valve, and control algolithm is complicated, realizes difficulty large;
4, analog input/output circuit adopts potentiometer to carry out tuning, and tuning process is complicated;
5, pressure sensor and braking electronic controller is distant, and Signal transmissions anti-interference is poor.
Summary of the invention
The invention provides a kind of high-speed train braking electronic controller, in order to realize anti-sliding control function.
One aspect of the present invention provides a kind of high-speed train braking electronic controller, comprising main control unit 10, communication unit 20, signal condition unit 30, wherein:
Described communication unit 20 is connected with controller of vehicle by optical fiber, for receiving the braking instruction sent by described controller of vehicle, and this braking instruction is converted to On-off signal signal;
Described signal condition unit 30 is for sending to described main control unit 10 by coming from after the On-off signal signal of described communication unit 20, the pressure sensor signal coming from pressure sensor and the velocity pick-up signal that comes from velocity sensor are nursed one's health;
Described main control unit 10 is for after receiving described On-off signal signal, anti-skid control signal is generated according to described velocity pick-up signal, antiskid valve is sent to after the conditioning of described signal condition unit 30, and generate electric pneumatic valve control signal according to described pressure sensor signal, after the conditioning of described signal condition unit 30, send to electric pneumatic valve.
Electronic controller of the present invention is simple and compact for structure, cost performance is high, have train network transmission braking instruction function, reliability is high, can be used for bullet train microprocessor through electro-pneumatic braking system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the overall frame structure schematic diagram of high-speed train braking electronic controller embodiment of the present invention;
The internal structure schematic diagram that Fig. 2 is main control unit 10 shown in Fig. 1;
Fig. 3 is digital tuning principle schematic;
The internal structure schematic diagram that Fig. 4 is communication unit 20 shown in Fig. 1;
Fig. 5 is the internal structure schematic diagram of the output circuit of EP valve control signal in electronic controller shown in Fig. 1;
Fig. 6 is the internal structure schematic diagram of the control unit of antiskid valve shown in Fig. 1 40.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the overall frame structure schematic diagram of high-speed train braking electronic controller embodiment of the present invention, and as shown in the figure, this high-speed train braking electronic controller comprises: main control unit 10, communication unit 20, signal condition unit 30, and its basic structure is as follows:
When vehicle will be braked, braking instruction is sent by controller of vehicle, described communication unit 20 is connected with controller of vehicle by optical fiber, after receiving the braking instruction sent by described controller of vehicle, this braking instruction is converted to On-off signal signal; Described signal condition unit 30 sends to described main control unit 10 by coming from after the On-off signal signal of described communication unit 20, the pressure sensor signal coming from pressure sensor and the velocity pick-up signal that comes from velocity sensor are nursed one's health; Described main control unit 10 is after receiving described On-off signal signal, anti-skid control signal is generated according to described velocity pick-up signal, antiskid valve is sent to after the conditioning of described signal condition unit 30, to realize the anti-sliding control to vehicle, and generate electric pneumatic valve control signal according to described pressure sensor signal, electric pneumatic valve is sent to, to realize the control for brake to vehicle after the conditioning of described signal condition unit 30.Wherein, described pressure sensor signal and velocity pick-up signal all belong to the analog input signal shown in Fig. 1.
In addition, as shown in Figure 1, this electronic controller can further include antiskid control unit 40 and PMU 50.Wherein, antiskid control unit 40 is connected with described signal condition unit 30 with described main control unit 10 respectively, sends to described signal condition unit 30 after the anti-skid control signal for being generated by described main control unit 10 is enlarged into pulse-width signal.Described PMU 50 is connected with above-mentioned each unit, for carrying out power management.
Below above-mentioned each unit and key content are described in detail:
controller of vehicle
Controller of vehicle is the device for controlling vehicle on bullet train.When driver sends braking instruction, this controller of vehicle can send the information such as braking instruction and time synchronized.
communication unit 20
Communication unit 20 is connected with controller of vehicle by optical fiber, for receiving the information such as braking instruction and time synchronized sent by described controller of vehicle.After this, this braking instruction is converted to On-off signal signal and sends main control unit 10 by hardwired to through signal condition unit 30 by this communication unit 20.
In addition, braking instruction and time synchronization information can also be sent to main control unit 10 by Serial Port Line by this communication unit 20.After this, the running status of braking electronic controller and fault message are delivered to communication unit 20 through Serial Port Line by main control unit 10, then are sent to controller of vehicle by optical fiber.To realize the communication between main control unit 10 and controller of vehicle.
Described communication unit 20 mainly bears the communication task of main control unit 10 and controller of vehicle, such as can adopt point-to-point communication mode, DBMS link is adopted to control (High-Level Data LinkControl, be called for short: HDLC) communication protocol, communication media is optical fiber, and traffic rate is 192kbps.Particularly, as shown in Figure 4, the primary processor in communication unit 20 adopts the single-chip microcomputer 21 of 16, and the braking instruction coming from controller of vehicle sends into communication unit 20 through optical fiber; Asynchronous serial communication mouth (SCI) through single-chip microcomputer 21 after optical fiber crossover sub (not shown) on communication unit 20 changes optical signal into the signal of telecommunication sends into single-chip microcomputer; Single-chip microcomputer is understood the braking instruction that sends and is sent into main control units 10 through 8 hardwireds after exporting (IO) mouth, light-coupled isolation by universal input, and wherein, these 8 hardwireds transmit conventional 1 to 7 grade of braking instruction and 1 traction command signal respectively.
Due in FIG, communication unit 20 is arranged on the top of PMU 50, is the reliability improving communication, and for the communication of main control unit 10 with communication unit 20, adopt the Serial Port Line of 20mA electric current loop to communicate, traffic rate is 19.2kbps.The signal coming from main control unit 10 delivers to the SCI mouth of single-chip microcomputer 21 on communication unit 20 after light-coupled isolation.Controller of vehicle send control instruction through communication unit understand after through hard-wired transmission to main control unit 10, the running status of braking electronic controller and fault message transfer to communication unit 20 through the serial communication of 20mA electric current loop.The real-time of this structure Reliable guarantee control instruction transmission and reliability, take full advantage of again the signal transfer functions of train bus-line simultaneously, simplifies the complexity wiring between braking electronic controller and controller of vehicle.
signal condition unit 30
Described signal condition unit 30 is for sending to described main control unit 10 by coming from after the On-off signal signal of described communication unit 20, the pressure sensor signal coming from pressure sensor and the velocity pick-up signal that comes from velocity sensor are nursed one's health.Particularly, as shown in Figure 2, described signal condition unit 30 is provided with 3 50 core sockets, analog input signal directly sends into main control unit 10 through signal condition unit 30 by 50 core sockets, changes and gathered by Main Processor Unit 10 after the signal condition such as Phototube Coupling through the voltage follow of signal condition unit 30 execution, voltage-frequency.On-off signal signal also can be delivered on main control unit 10 by 50 core sockets after signal condition unit 30 carries out signal condition, Main Processor Unit 10 can pass through external bus read switch amount input signal, and the switching value output signal of main control unit 10 is exported by 50 core sockets after signal condition unit 30 is nursed one's health.Pulsewidth modulation (PWM) signal of the anti-skid control signal DC5V that main control unit 10 exports is after the PWM drive singal that antiskid control unit 40 is enlarged into DC110V, deliver to signal condition unit 30 again and export antiskid valve to by 50 core sockets, this antiskid valve is arranged on four axletrees of vehicle, the rotation of axletree is controlled, to play anti-skidding effect under the driving of described anti-skid control signal.
In addition, for ensureing the reliability that braking instruction transmits, between controller of vehicle and signal condition unit 30, be provided with two alternate brake order lines, as shown in Figure 1, this alternate brake order line is two, is respectively used to transmit instruction A for subsequent use and instruction B for subsequent use.When fiber optic communication is broken down, controller of vehicle can also transmit alternate brake instruction by this alternate brake order line to signal condition unit 30, and alternate brake instruction is sent to main control unit 10 by signal condition unit 30 again.
pressure sensor
High-speed train braking electronic controller described in the present embodiment can be installed on the gas path plate in the switch board of brakes, bottom the cabinet of this high-speed train braking electronic controller, be provided with pressure sensor, described pressure sensor is used for that the gas circuit controlled pressure signal of described brakes is converted to described pressure sensor signal and sends to described signal condition unit 30.
Wherein, described pressure sensor can be four.Gas circuit controlled pressure signal comprises: total reservoir pressure signal, brake-cylinder pressure signal, forecarriage load-carrying pressure signal and trailing bogie load-carrying pressure signal, these pressure signals directly enter bottom the cabinet of high-speed train braking electronic controller by the gas channels on gas path plate, send to described signal condition unit 30 after these pressure signals being converted to pressure sensor signal by pressure sensor.
Particularly, described main control unit 10 is by carrying out tuning control to generate corresponding anti-skid control signal and electric pneumatic valve control signal to input analog amount signal (comprising pressure sensor signal and velocity pick-up signal).As shown in Figure 3, for pressure input circuit, the digital tuning principle of analog input output loop is: the pass of pressure sensor signal P and voltage V is: P=AV+B, and in formula, A is slope, air pressure value corresponding when being 0 that B is voltage.Because input circuit component parameter is different, corresponding A, B value is not identical yet.Time tuning, first input air pressure P 1, the voltage that braking electronic controller samples is V1; Input air pressure P 2 again, the voltage that braking electronic controller samples is V2.Bring P1, V1 and P2, V2 into formula P=AV+B respectively, try to achieve A and B value, and they are stored in EEPROM.Like this, according to the magnitude of voltage V sampled, the force value of input just can be tried to achieve according to formula P=AV+B.
velocity sensor
Velocity sensor is installed on four axletrees of vehicle, by measuring the rotational speed rate formation speed transducing signal of axletree, this velocity pick-up signal is pulse signal, as sinusoidal or square-wave signal, the conditioning through signal condition unit 30 laggard enter main control unit 10.Particularly, as shown in Figure 2, velocity pick-up signal catches mouth as a kind of analog input signal through the voltage follow of signal condition unit 30, voltage-frequency conversion, four pwm signals delivering to primary processor 11 after light-coupled isolation, PWM wave period is calculated by primary processor 11, calculate speed, deceleration, speed difference and slip rate again, according to these data genaration anti-skid control signal calculated.
main control unit 10
As shown in Figure 2, described in the present embodiment, the primary processor 11 of main control unit 10 can adopt 32 single-chip microcomputers, for convenience of commercialization from now on, program code is stored in the FLASH memory 12 extended out by external bus, capacity is 1M byte, and primary processor 11 reads the code be stored in FLASH memory 12 by 16 external bus.For preserving the fault message of braking control system in real time, adopt SRAM (the Static Random Access Memory that two panels extends out, be called for short: SRAM) as high speed memory modules 13, for storage failure information, particularly, the fault message of first 10 seconds and latter 2 seconds can occur storage failure, capacity is respectively 4M byte.Primary processor 11 reads and writes fault message by external bus to high speed memory modules 13, and for preventing the loss of fault message after system power failure, main control unit 10 is equipped with battery, for powering to high speed memory modules 13 after system cut-off.
From the On-off signal signal of signal condition unit 30 through phase inverter, latch, then deliver to On-off signal output module (DI/DO) (not shown) of primary processor 11 through external bus; The switching value output signal exported by On-off signal output module also delivers to latch through external bus, exports signal condition unit 30 after phase inverter is anti-phase to.
From the analog input signal of signal condition unit 30, as regenerative braking force voltage signal (0 ~ 10V), from the electric braking force signal (10 ~ 30mA) of adjacent motor-car, on main control unit 10 after voltage follow, voltage-frequency conversion, be converted to frequency signal, then after light-coupled isolation, deliver to the analog input and output module (AI/AO) 16 of primary processor 11.The analog quantity output signals that this analog input and output module 16 exports, as regenerative braking force request (0 ~ 20V), the electric braking force signal (10 ~ 30mA) more than needed of motor-car, by primary processor 11 output pwm signal, export signal condition unit 30 to through light-coupled isolation, filtering voltage regulation with after comparing amplification.By the numerical value of the adjustable pulse width joint analog quantity output signals of adjustment PWM ripple, PWM wave frequency is constant.
For the Current Control of EP valve, by the dedicated PWM mouth of single-chip microcomputer, the pwm signal that output frequency is adjustable, pressure converter is frequently delivered to after light-coupled isolation, after being converted to voltage again through voltage follow, compare for driven MOS pipe after amplification, connected by metal-oxide-semiconductor and turn off the DC110V voltage be applied on EP valve.By regulating the frequency of pwm signal, can size of current on control EP valve.Main control unit directly exports the PWM voltage driven empty proportion magnetic valve of electricity (EP valve) of DC110V, by regulating EP valve Current Control brake-cylinder pressure.
PWM mouth special on primary processor 11 exports 4 road anti-skid control signal to antiskid control unit 40, this frequency-invariant and adjustable pulse width.
The serial interface module 15 of primary processor 11 carries out serial communication by SC I mouth through Serial Port Line and communication unit 20, traffic rate is 19.2kbps, for receiving from information such as the braking instruction (this braking instruction only supplies primary processor 11 reference) of communication unit and time synchronized, and send running status and fault message to communication unit.
Real-time clock (RTC) is for providing time reference for braking electronic controller, and model is such as RTC62423.The model of WatchDog Timer is such as TA8030, for monitoring primary processor 11, when primary processor 11 operation irregularity (as too low in operating voltage or other interference), and reset SCM system.
Primary processor 11 is also connected with power down memory module 14 by universaling I/O port, this power down memory module 14 can be such as EEPROM (the Electrically ErasableProgrammable Read-Only Memory of serial, be called for short: EEPROM), be mainly used in the tuner parameters storing use when carrying out tuning to described pressure sensor signal and velocity pick-up signal, in case obliterated data during system power failure.During system initialization, primary processor 11 can read these tuner parameters from EEPROM, and carries out tuning according to these tuner parameters to input analog amount signal (comprising pressure sensor signal and velocity pick-up signal) and output analog signals.When digital tuning, enter digital tuning handling procedure by the knob stirred on display floater, carry out tuning by road to analog input output loop, and the tuner parameters determined is stored to power down memory module 14.
the output circuit of EP valve control signal
As shown in Figure 5, EP valve adopts linear scale valve, and its input current and EP valve output pressure are linear relationship, is controlled the pressure size of checking cylinder, and then control air-making power size by the electric current of adjustment EP valve.For the control of EP valve electric current, adopt the frequency modulation control of PWM ripple, the pwm signal that CPU output frequency is adjustable, pressure converter is frequently delivered to after Phototube Coupling, export target control voltage, and voltage comparator is delivered to after voltage follow, the virtual voltage of the sampling resistor feedback of EP current output terminal also feeds back to voltage comparator simultaneously, feedback voltage and target voltage compare, when feedback voltage is lower than target control voltage, comparator exports high level, drive triode ON, DC110V voltage is applied on EP valve, EP valve forms electric current, on sampling resistor, voltage increases, when feedback voltage is higher than target control voltage, comparator output low level, triode turns off, and without DC110V voltage on EP valve, EP valve powers on and flows through fly-wheel diode formation loop and reduce gradually, and on sampling resistor, voltage reduces, therefore, by comparing of target voltage and feedback voltage, triode is constantly in conducting and off state, thus makes EP current stabilization at target current value.
antiskid control unit 40
As shown in Figure 6, in specific embodiment, the velocity pick-up signal that main control unit 10 is sent by detection speed sensor, computational speed, deceleration, speed difference, slip rate, judge whether wheel slides according to sliding criterion, slide once judge that certain is taken turns, then fixed by PWM mouth output frequency, the pwm signal of adjustable pulse width as anti-skid control signal to antiskid control unit 40; After Phototube Coupling, signal amplification, overcurrent protection and overvoltage protection, antiskid valve is exported in antiskid control unit 40, being applied to, antiskid valve is the PWM voltage signal of DC110V, by control PWM pulsewidth, the equivalent voltage be applied in antiskid valve can be regulated, like this, when antiskid valve is opened, PWM pulsewidth can be increased, improve equivalent voltage, to improve antiskid valve opening speed; When antiskid valve opens after certain hour (1 second), by reducing PWM pulsewidth, reducing anti-skidding upper equivalent voltage, improving antiskid valve service life.
Electronic controller described in the present embodiment is simple and compact for structure, cost performance is high, have train network transmission braking instruction function, reliability is high, can be used for bullet train microprocessor through electro-pneumatic braking system.Particularly, compared with prior art, described in the present embodiment, the advantage of electronic controller is:
1, high-speed train braking electronic controller described in the present embodiment has and slides Detection & Controling function.The signal conditioning circuit 30 of the pulse signal sent by velocity sensor on four axletrees on main control unit 10 delivers to primary processor 11, primary processor calculates the speed of four axletrees, deceleration, speed difference and slip rate in real time, judges whether wheel slides according to sliding criterion.Once detect and slide, namely main control unit exports control signal to antiskid control unit, exported the PWM drive singal of DC110V by antiskid control unit to antiskid valve, reduce brake-cylinder pressure on sliding axis by exhaust, after adhesion recovers, namely stop the output of pwm signal.
2, the communication unit 20 of high-speed train braking electronic controller described in the present embodiment adopts 16 bit digital processors to control, and receives the braking instruction from controller of vehicle, and the information such as on-position and fault is sent to controller of vehicle through optical fiber through optical fiber.For improving the real-time and reliability that braking instruction receives, after control instruction that communication unit receives (1 to 7 grade braking instruction, traction), deliver to main control unit by 8 DC24V hardwireds.Meanwhile, the information such as on-position and fault is first delivered to communication unit by SCI serial ports by main control unit 10, and communication unit will receive information again and deliver to controller of vehicle through optical fiber.This design fully ensure that control for brake instruction is through the real-time of Internet Transmission and reliability and wiring is simple.
3, high-speed train braking electronic controller described in the present embodiment drives EP valve by the PWM voltage signal of DC110V, and by changing the size of current on the frequency of pwm signal and adjustable EP valve, and then control the pressure of checking cylinder, control algolithm is simple, is easy to realize.
4, high-speed train braking electronic controller described in the present embodiment adopts digital tuning method to carry out parameter tuning to analog input/output loop, and whole process is convenient, fast, accurate.
5, because pressure sensor is directly installed in braking electronic controller, make pressure sensor signal short to the transmission range of signal condition unit 30, because this reducing signal disturbing, amperometric sensor need not be adopted, thus eliminate the modulate circuit of electric current to voltage, total has simply compact, the advantage that interference free performance is high.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a high-speed train braking electronic controller, is characterized in that, comprises main control unit (10), communication unit (20), signal condition unit (30), wherein:
Described communication unit (20) is connected with controller of vehicle by optical fiber, for receiving the braking instruction sent by described controller of vehicle, and this braking instruction is converted to On-off signal signal;
Described signal condition unit (30) is for sending to described main control unit (10) by coming from after the On-off signal signal of described communication unit (20), the pressure sensor signal coming from pressure sensor and the velocity pick-up signal that comes from velocity sensor are nursed one's health;
Described main control unit (10) is for after receiving described On-off signal signal, anti-skid control signal is generated according to described velocity pick-up signal, antiskid valve is sent to after the conditioning of described signal condition unit (30), and generate electric pneumatic valve control signal according to described pressure sensor signal, after the conditioning of described signal condition unit (30), send to electric pneumatic valve;
Wherein, described high-speed train braking electronic controller also comprises: pressure sensor;
Described pressure sensor is arranged on bottom the cabinet of described high-speed train braking electronic controller;
Described pressure sensor, sends to described signal condition unit (30) for the gas circuit controlled pressure signal of brakes is converted to pressure sensor signal;
Described main control unit, specifically for:
Four pwm signals of main control unit are caught mouth and are received described velocity pick-up signal generation PWM ripple, and calculate PWM wave period, calculate speed, deceleration, speed difference and slip rate again, judge whether wheel slides according to these data calculated, slide once judge that certain is taken turns, generate anti-skid control signal.
2. high-speed train braking electronic controller according to claim 1, it is characterized in that, also comprise: antiskid control unit (40), being connected with described signal condition unit (30) with described main control unit (10) respectively, after the anti-skid control signal for being generated by described main control unit (10) is enlarged into pulse-width signal, sending to described signal condition unit (30).
3. high-speed train braking electronic controller according to claim 1, it is characterized in that: described main control unit (10) is also connected with described communication unit (20) by Serial Port Line, for being received the braking instruction and the time synchronization information that come from described controller of vehicle by described Serial Port Line, and send running status and fault message to described controller of vehicle.
4. high-speed train braking electronic controller according to claim 3, is characterized in that: described Serial Port Line is the Serial Port Line adopting 20mA electric current loop.
5. high-speed train braking electronic controller according to claim 1, is characterized in that: described high-speed train braking electronic controller is installed on the gas path plate in the switch board of brakes.
6. high-speed train braking electronic controller according to claim 1, it is characterized in that: described signal condition unit (30) is also connected with described controller of vehicle, for receiving the instruction for subsequent use coming from described controller of vehicle by alternate brake order line.
7. high-speed train braking electronic controller according to claim 3, is characterized in that, described main control unit (10) comprising: high speed memory modules is for storing described fault message, and this high speed memory modules is battery-powered.
8. high-speed train braking electronic controller according to claim 7, is characterized in that, described high speed memory modules is SRAM.
9. high-speed train braking electronic controller according to claim 1, it is characterized in that, described main control unit (10) comprising: power down memory module (14), the tuner parameters of use when carrying out tuning for storing to described pressure sensor signal and velocity pick-up signal.
10. high-speed train braking electronic controller according to claim 9, is characterized in that: described power down memory module (14) is EEPROM.
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| CN104260745A (en) * | 2014-09-28 | 2015-01-07 | 青岛思锐科技有限公司 | Motor train unit brake control unit |
| CN104691573B (en) * | 2015-01-14 | 2017-02-15 | 南车株洲电力机车有限公司 | Control method and system for static-state holding brake of locomotive |
| CN109120254A (en) * | 2018-10-09 | 2019-01-01 | 华北电力大学（保定） | A kind of switching value input circuit |
| CN111301375B (en) * | 2019-12-14 | 2021-11-16 | 中车大连电力牵引研发中心有限公司 | Braking force management system and method for railway vehicle |
| CN111391810A (en) * | 2020-04-07 | 2020-07-10 | 中车青岛四方车辆研究所有限公司 | Distributed locomotive electronic brake control system |
| CN113407246B (en) * | 2021-06-29 | 2022-08-12 | 中车制动系统有限公司 | Control circuit for dormancy and awakening of electronic brake control unit |
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