CN102495613A - Controller area network (CAN)-control-based auxiliary control unit for locomotive - Google Patents

Controller area network (CAN)-control-based auxiliary control unit for locomotive Download PDF

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Publication number
CN102495613A
CN102495613A CN2011104388296A CN201110438829A CN102495613A CN 102495613 A CN102495613 A CN 102495613A CN 2011104388296 A CN2011104388296 A CN 2011104388296A CN 201110438829 A CN201110438829 A CN 201110438829A CN 102495613 A CN102495613 A CN 102495613A
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control
chip
control chip
signal
power supply
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CN2011104388296A
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李�东
丛巍
闫春辉
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CNR Dalian Locomotive Research Institute Co Ltd
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CNR Dalian Locomotive Research Institute Co Ltd
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Priority to CN2011104388296A priority Critical patent/CN102495613A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention discloses a controller area network (CAN)-control-based auxiliary control unit for a locomotive. The auxiliary control unit consists of a CAN communication interface, a CAN register, a field programmable gate array (FPGA) control chip and a digital signal processor (DSP) master control chip, wherein the CAN communication interface and the CAN register mainly process network data input by an input/output module, and perform data conversion and storage; the FPGA control chip is used for processing and converting information received by the CAN register, driving a plurality of control chips and ensuring the work of the chips; and the DSP master control chip controls the starting, stopping and emergency modes of the whole auxiliary control unit through a CAN bus, and protects an auxiliary control module and a peripheral control circuit. A serial communication bus adopting a master-slave mode is replaced by a serial communication bus adopting a multi-master mode, so that the shortcomings of low real-time performance and reliability of a system are overcome, and the operating requirements of the modern locomotive are met.

Description

Locomotive Auxiliary Control Element based on the CAN network control
Technical field
The present invention relates to a kind of locomotive Auxiliary Control Element, be specifically related to a kind of locomotive Auxiliary Control Element based on the CAN network control.
Background technology
The locomotive Auxiliary Control Element is the core of locomotive supplementary controlled system; Be mainly used in stand-by motor for locomotive; Blower fan, the power devices of backup systems such as compressor, sensor signal such as the voltage of the auxiliary unsteady flow cabinet that simultaneously peripheral sensor is measured, electric current, temperature, air quantity; Be delivered in trainman's display screen through locomotive network, make things convenient for the locomotive driver and conductor in time various situation to be handled.
At present, the communication of the Auxiliary Control Element of locomotive employing and locomotive main control part is followed foreign technology mostly and is adopted the MVB bus control technology.Multifunctional vehicle MVB mainly realizes the data communication between each function control unit in the same vehicle.MVB has only Physical layer and link layer wherein.MVB is a kind of serial communication bus of master-slave mode, and communication mode can only carry out with the mode of main website poll, and real-time, the reliability of system are relatively poor.
Summary of the invention
The technical matters that the present invention will solve adopts the serial communication bus of the alternative master-slave mode of serial communication bus of many master modes, overcomes the relatively poor deficiency of real-time, reliability of system, satisfies the job requirement of modernized locomotive.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of locomotive Auxiliary Control Element based on the CAN network control is characterized in that: comprise the CAN communication interface, and the CAN register, FPGA control chip and DSP main control chip are formed; Wherein CAN communication interface and CAN register section mainly are the network datas of handling the input/output module input, carry out data-switching and storage; Fpga chip is used for the information that the CAN register receives is handled and changed, and the several Control chip is driven, and guarantees the work of chip, and the CAN network information that will handle afterwards flows to the processing that the DSP control chip carries out control action; The DSP main control chip stops contingency mode through the startup of the whole Auxiliary Control Element of CAN bus realization control; To the logic of the action of contactor, send the analog quantity and the value of digital quantity that collects to main control unit simultaneously, the contactor actuating signal of feedback reality; The groundwork information of the assist control module that needs with main control unit; Detection failure information is blocked/action of starting impulse accordingly, protection assist control module and peripheral control circuit.
Said DSP main control chip adopts digital signal processing chip.
Said CAN communication interface adopts the 82527CAN control chip D2 of intel.
Being operated under the mode 3 of chip selected through pull-up resistor R1 in the MODE selecting side of the control chip D2 of said CAN communication interface; Port ALE joins through resistance R 2 and+5V working power; The thyristor Y1 that the XTAL port connects 20MHz is used for the clock frequency of control chip, and 0 Europe resistance through R8 comes the gated clock signal; 8 bit address data CAN_bus and address control signal CAN_bus_ENn on the address bus, DIRn through 16-bit dual power supply conversion transceiver D1, sends into signal A/D, the P1 Data Receiving of D2 and handles port; The control signal CAN_ctrl of chip provides control and the drive signal of D2 through the conversion of 16-bit dual power supply conversion transceiver D1, wherein through R6 receive+the 5V power supply on; A series of ports of P2 are delivered to system error signal and feedback information in the FPGA control chip (3) through the I2C bus and are handled; Through R10 and R11 the voltage dividing potential drop of 5V is sent into RX0; The RX1 signal receiving end of control chip D2 is connected to the B end of D4; D4 is through arriving triode Q1, the grounded emitter of Q1, the negative pole of collector sending and receiving optical diode DS1 behind the port Q connecting resistance R4; The positive pole of light emitting diode DS1 connects+power supply of 3.3V through R9; Be whether be used for monitoring the reception signal of CAN normal, as normally, light emitting diode is lighted; The C of D4 end and R end is connected through capacitor C 1 pass through R13 afterwards and receive+the 5V power supply on; RX1 is connected to+the 5V power supply through R12, is connected to the VO end of 7 pin of photoelectrical coupler D6 afterwards, the isolation of advancing D6, and 2 pin ANODE are connected to isolation+5V power supply, and 3 pin CATHODE are connected on the D3 through R15; The TX1 signal receiving end of same control chip D2 is connected to the B end of D4; D4 is through arriving triode Q2, the grounded emitter of Q2, the negative pole of collector sending and receiving optical diode DS2 behind the port Q connecting resistance R3; The positive pole of light emitting diode DS2 connects+power supply of 3.3V through R14; Be whether be used for monitoring the transmission signal of CAN normal, as normally, light emitting diode is lighted; The C of D4 end and R end is connected through capacitor C 2 pass through R5 afterwards and receive+the 5V power supply on; TX1 is through the 3 pin CATHODEs of R7 to photoelectrical coupler D5, and the 2 pin ANODE of D5 are connected to+the 5V power supply, pass through the isolation of photoelectrical coupler D5 afterwards, and the VO end of 7 pin is connected to isolation+5V power supply and CAN connect chip D7 through R16; The conversion of the signal of CAN control chip through D7 delivered in 2 and 7 stitch of outside DB9 joint of CAN communication through inductance L 1 again, and 2 pins are receiving end, and 7 pins are transmitting terminal.
Said D1 is 74HC245, and D7 is 82C251.
The present invention overcomes the relatively poor deficiency of real-time, reliability of system through the serial communication bus of the alternative master-slave mode of serial communication of the many master modes of employing, satisfies the job requirement of modernized locomotive.
Description of drawings
Fig. 1 is the circuit block diagram of locomotive Auxiliary Control Element.
The circuit diagram of the locomotive Auxiliary Control Element preferred version of Fig. 2.
Embodiment
As shown in Figure 1, the locomotive Auxiliary Control Element based on the CAN network control comprises CAN communication interface 1, CAN register 2, and FPGA control chip 3 is formed with DSP main control chip 4; Wherein CAN communication interface 1 mainly is to handle the network data of input/output module (RIOM) input with CAN register 2 parts, carries out data-switching and storage; FPGA control chip 3 is used for the data with CAN register 2, simply handles, and utilizes program that the CAN communication data is transformed to the form that DSP main control chip 4 can be discerned, and control logic circuit sends the data to DSP main control chip 4 and carries out control and treatment; DSP main control chip 4 stops contingency mode through the startup of the whole Auxiliary Control Element of CAN bus realization control; To the logic of the action of contactor, send the analog quantity and the value of digital quantity that collects to main control unit MPU simultaneously, the contactor actuating signal of feedback reality; And the groundwork information of the assist control modules A CU of main control unit (MPU) needs; Detection failure information is blocked/action of starting impulse accordingly, protection assist control modules A CU and peripheral control circuit 5.
Said DSP main control chip 4 adopts digital signal processing chip.
Said CAN communication interface 1 adopts the 82527CAN control chip D2 of intel.
As shown in Figure 2, being operated under the mode 3 of chip selected through pull-up resistor R1 in the MODE selecting side of the communication interface control chip D2 of CAN; Port ALE joins through resistance R 2 and+5V working power; The thyristor Y1 that the XTAL port connects 16MHz is used for the clock frequency of control chip, and 0 Europe resistance through R8 comes the gated clock signal; 8 bit address data CAN_bus and address control signal CAN_bus_ENn on the address bus, DIRn, through 16-bit dual power supply conversion transceiver D1, model 74HC245 sends into signal A/D, the P1 Data Receiving of D2 and handles port; The control signal CAN_ctrl of chip is through 16-bit dual power supply conversion transceiver D1, model 74HC245, conversion provides control and the drive signal of D2, wherein through R6 receive+the 5V power supply on; A series of ports of P2 are delivered to system error signal and feedback information among the FPGA through the I2C bus and are handled; Through R10 and R11 the voltage dividing potential drop of 5V is sent into RX0; The RX1 signal receiving end of control chip D2 is connected to the B end of D4; D4 is through arriving triode Q1, the grounded emitter of Q1, the negative pole of collector sending and receiving optical diode DS1 behind the port Q connecting resistance R4; The positive pole of light emitting diode DS1 connects+power supply of 3.3V through R9; Be whether be used for monitoring the reception signal of CAN normal, as normally, light emitting diode is lighted; The C of D4 end and R end is connected through capacitor C 1 pass through R13 afterwards and receive+the 5V power supply on; RX1 is connected to+the 5V power supply through R12, is connected to the VO end of 7 pin of photoelectrical coupler D6 afterwards, the isolation of advancing D6, and 2 pin ANODE are connected to isolation+5V power supply, and 3 pin CATHODE are connected on the D3 through R15; The TX1 signal receiving end of same control chip D2 is connected to the B end of D4; D4 is through arriving triode Q2, the grounded emitter of Q2, the negative pole of collector sending and receiving optical diode DS2 behind the port Q connecting resistance R3; The positive pole of light emitting diode DS2 connects+power supply of 3.3V through R14; Be whether be used for monitoring the transmission signal of CAN normal, as normally, light emitting diode is lighted; The C of D4 end and R end is connected through capacitor C 2 pass through R5 afterwards and receive+the 5V power supply on; TX1 is through the 3 pin CATHODEs of R7 to photoelectrical coupler D5, and the 2 pin ANODE of D5 are connected to+the 5V power supply, pass through the isolation of photoelectrical coupler D5 afterwards, and the VO end of 7 pin is connected to isolation+5V power supply and CAN connect chip D7 through R16.Model is 82C251; The conversion of the signal of CAN control chip through D7 delivered in 2 and 7 stitch of outside DB9 joint of CAN communication through inductance L 1 again, and 2 pins are receiving end, and 7 pins are transmitting terminal.
ACU is an Auxiliary Control Element, is to convert middle dc voltage into three-phase 380V alternating current on the locomotive, is used for control device that various utility appliance are supplied power, comprises oil pump, water pump, traction blower fan, illumination, consumers such as air-conditioning.
The various duties of ACU and start and stop control all are to send steering order through main control unit MPU; Send among the ACU through input/output module RIOM; And the communication of these several intermodules is accomplished through the CAN network, and the input and output of the control command among the ACU are all resolved and sent through CAN communicating circuit and control circuit and accept control command.
Whole C AN network is by the communication interface of CAN, CAN register and peripheral control circuit, and FPGA control chip and DSP main control chip are formed.
CAN interface and register section mainly are the CAN network datas of handling input and output, carry out data-switching and storage.
Fpga chip is used for the information that the CAN register receives is handled and changed; The several Control chip is driven, guarantee the work of chip, the CAN network information that will handle afterwards flows to the processing FPGA control chip that the DSP control chip carries out control action and is used for the data with the CAN register; Simply handle; Utilize program that the CAN communication data is transformed to the form that DSP can discern, control logic circuit sends the data to DSP and carries out control and treatment.
In dsp chip, programme, the startup through the whole Auxiliary Control Element of CAN bus realization control stops; Contingency mode to the logic of the action of contactor, sends the analog quantity that collects and the value of digital quantity to main control unit simultaneously; The groundwork information of the assist control module that contactor actuating signal that feedback is actual and main control unit need, detection failure information; Block/action of starting impulse protection ACU and unsteady flow cabinet and peripherals accordingly.
Adopt the CAN2.0 interface, adopt the 82527CAN control chip D2 of intel, adopt FPGA to control the CAN communication.
The CAN control chip has four kinds of working methods, adopts pull-up resistor through the stitch to mode0 and mode1, has selected to be operated in mode 3.
The clock of controller is crystal oscillator or the FPGA control of 20MHz, is to select through resistance.
The control signal of FPGA such as CLOCK, E, RWn .CSn, INT, the D3 that RESETn etc. need pass through carries out level conversion, and the data on the 8 bit address buses are also carried out communication through D1 simultaneously.D1 controls through FPGA.
D5 and D6 are used for other control signals on communication signal and the circuit board of isolated can bus.The power supply converter of 5V be used for into the CAN of isolated part bus-powered.
Adopt the data converting interface of D7 as CAN controller and external physical bus.
The input/output state of CAN communication can judge that the LED lamp is connected with input/output signal through D4 through the LED lamp.

Claims (5)

1. based on the locomotive Auxiliary Control Element of CAN network control,
It is characterized in that: comprise CAN communication interface (1), CAN register (2), FPGA control chip (3) and DSP main control chip (4) are formed;
Wherein CAN communication interface (1) and CAN register (2) part mainly is to handle the network data of input/output module (RIOM) input, carries out data-switching and storage;
FPGA control chip (3) is used for the data with CAN register (2); Simply handle; Utilize program that the CAN communication data is converted into the form that DSP main control chip (4) can be discerned, control logic circuit sends the data to DSP main control chip (4) and carries out control and treatment;
DSP main control chip (4) is realized the startup of the whole Auxiliary Control Element of control through the data command of CAN bus; Stop, contingency mode is to the logic of the action of contactor; Send analog quantity and the digital quantity that collects to main control unit (MPU) simultaneously; The contactor actuating signal that feedback is actual, and the groundwork information of the assist control module (ACU) of main control unit (MPU) needs, detection failure information; Block/action of starting impulse protection assist control module (ACU) and peripheral control circuit (5) accordingly.
2. the locomotive Auxiliary Control Element based on the CAN network control according to claim 1 is characterized in that: said DSP main control chip (4) adopts digital signal processing chip.
3. the locomotive Auxiliary Control Element based on the CAN network control according to claim 1 is characterized in that: said CAN communication interface (1) adopts the 82527CAN control chip D2 of intel.
4. the locomotive Auxiliary Control Element based on the CAN network control according to claim 3 is characterized in that: being operated under the mode 3 of chip selected through pull-up resistor R1 in the MODE selecting side of the control chip D2 of said CAN communication interface (1); Port ALE joins through resistance R 2 and+5V working power; The thyristor Y1 that the XTAL port connects 20MHz is used for the clock frequency of control chip, comes the gated clock signal through R8 resistance; 8 bit address data CAN_bus and address control signal CAN_bus_ENn on the address bus, DIRn through 16-bit dual power supply conversion transceiver D1, sends into signal A/D, the P1 Data Receiving of D2 and handles port; The control signal CAN_ctrl of chip provides control and the drive signal of D2 through the conversion of 16-bit dual power supply conversion transceiver D1, wherein through R6 receive+the 5V power supply on; A series of ports of P2 pass through I with system error signal and feedback information 2The C bus is delivered in the FPGA control chip (3) and is handled; Through R10 and R11 the voltage dividing potential drop of 5V is sent into RX0; The RX1 signal receiving end of control chip D2 is connected to the B end of D4; D4 is through arriving triode Q1, the grounded emitter of Q1, the negative pole of collector sending and receiving optical diode DS1 behind the port Q connecting resistance R4; The positive pole of light emitting diode DS1 connects+power supply of 3.3V through R9; Be whether be used for monitoring the reception signal of CAN normal, as normally, light emitting diode is lighted; The C of D4 end and R end is connected through capacitor C 1 pass through R13 afterwards and receive+the 5V power supply on; RX1 is connected to+the 5V power supply through R12, is connected to the VO end of 7 pin of photoelectrical coupler D6 afterwards, the isolation of advancing D6, and 2 pin ANODE are connected to isolation+5V power supply, and 3 pin CATHODE are connected on the D3 through R15; The TX1 signal receiving end of same control chip D2 is connected to the B end of D4; D4 is through arriving triode Q2, the grounded emitter of Q2, the negative pole of collector sending and receiving optical diode DS2 behind the port Q connecting resistance R3; The positive pole of light emitting diode DS2 connects+power supply of 3.3V through R14; Be whether be used for monitoring the transmission signal of CAN normal, as normally, light emitting diode is lighted; The C of D4 end and R end is connected through capacitor C 2 pass through R5 afterwards and receive+the 5V power supply on; TX1 is through the 3 pin CATHODEs of R7 to photoelectrical coupler D5, and the 2 pin ANODE of D5 are connected to+the 5V power supply, pass through the isolation of photoelectrical coupler D5 afterwards, and the VO end of 7 pin is connected to isolation+5V power supply and CAN connect chip D7 through R16; The conversion of the signal of CAN control chip through D7 delivered in 2 and 7 stitch of outside DB9 joint of CAN communication through inductance L 1 again, and 2 pins are receiving end, and 7 pins are transmitting terminal.
5. the locomotive Auxiliary Control Element based on the CAN network control according to claim 3 is characterized in that: said D1 is 74HC245, and D7 is 82C251.
CN2011104388296A 2011-12-23 2011-12-23 Controller area network (CAN)-control-based auxiliary control unit for locomotive Pending CN102495613A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104714502A (en) * 2013-12-12 2015-06-17 北车大连电力牵引研发中心有限公司 Control system
CN104678983B (en) * 2013-11-28 2017-11-03 中车大连电力牵引研发中心有限公司 Traction control unit self-detection circuit
CN107544416A (en) * 2017-09-26 2018-01-05 苏州市经纬轨道控制技术有限公司 A kind of control device of AuCT
CN108132624A (en) * 2017-12-14 2018-06-08 河南交通职业技术学院 A kind of high reliability vehicle control unit controls system and control method
CN113258547A (en) * 2021-07-01 2021-08-13 南方电网数字电网研究院有限公司 Chip-level relay protection device and system

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CN201298159Y (en) * 2008-10-28 2009-08-26 南车南京浦镇车辆有限公司 Train electropneumatic brake controller based on DSP
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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN104678983B (en) * 2013-11-28 2017-11-03 中车大连电力牵引研发中心有限公司 Traction control unit self-detection circuit
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CN113258547A (en) * 2021-07-01 2021-08-13 南方电网数字电网研究院有限公司 Chip-level relay protection device and system
CN113258547B (en) * 2021-07-01 2021-09-24 南方电网数字电网研究院有限公司 Chip-level relay protection device and system

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