CN106444723B - The test macro and its test method of electronic brake control unit - Google Patents

The test macro and its test method of electronic brake control unit Download PDF

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Publication number
CN106444723B
CN106444723B CN201611048092.6A CN201611048092A CN106444723B CN 106444723 B CN106444723 B CN 106444723B CN 201611048092 A CN201611048092 A CN 201611048092A CN 106444723 B CN106444723 B CN 106444723B
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China
Prior art keywords
test
module
control unit
electronic brake
brake control
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CN201611048092.6A
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CN106444723A (en
Inventor
胡波
赵欣
马春浩
刘澳
孙全涛
王鹏
王成程
王玉波
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CRRC Qingdao Sifang Rolling Stock Research Institute Co Ltd
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CRRC Qingdao Sifang Rolling Stock Research Institute Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/0213Modular 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/40Bus networks
    • H04L12/40006Architecture of a communication node
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/40Bus networks
    • H04L2012/40208Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215Controller Area Network CAN

Abstract

The present invention proposes the test macro and its test method of a kind of electronic brake control unit, the present invention connects the host computer that can monitor test macro operation outside, including providing the power module of electric energy for test macro, and interface testing module, control test module and the communication test module being electrically connected with power module, the interface module that wherein interface testing module corresponds to electronic brake control unit is arranged, the control module setting that test module corresponds to electronic brake control unit is controlled, the communication module that communication test module corresponds to electronic brake control unit is arranged;It is connected by CAN bus between interface testing module, control test module and communication test module.Test macro of the invention can be realized port all standing, and test method is easy to operate, test is quickly comprehensive.

Description

The test macro and its test method of electronic brake control unit
Technical field
The invention belongs to electronic brake control units in rail vehicle, specifically, it is single to be related to a kind of deceleration of electrons control The test macro of member.
Background technique
Electronic brake control unit (EBCU) is the core of rail vehicle braking system, including power module, switching value are defeated Enter output module, frequency input/output module, analog input and output module, PWM input/output module, power driver module, Breakdown judge module and communication module etc. can be realized the functions such as brake management, pressure control, signal acquisition, communication, Reliability and safety have tremendous influence to traffic safety, therefore are also particularly important to its test.
Existing EBCU testing stand mainly by industrial personal computer, data collecting card, signal conditioner, pressure sensor, PLC, after The equipment such as electric appliance composition, needs professional to operate, it is preferred that emphasis is the test to EBCU performance, such as it is retardation test, slow Test, skid resistance test, response time etc. are solved, can only once test one.Routine test is carried out for batch production, batch For EBCU, testing stand is at high cost, volume is big, low efficiency, port covering it is not comprehensive.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of test macro of electronic brake control unit and its test sides Method, test macro can be realized port all standing, and test method is easy to operate, test is quickly comprehensive.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of test macro of electronic brake control unit, outer company can monitor the host computer of test macro operation, including be Test macro provides the power module of electric energy, and the interface testing module, the control test module that are electrically connected with power module With communication test module, the interface module that wherein interface testing module corresponds to electronic brake control unit is arranged, control test The control module that module corresponds to electronic brake control unit is arranged, and communication test module corresponds to electronic brake control unit Communication module setting;It is connected by CAN bus between interface testing module, control test module and communication test module.
It is advanced optimized as of the invention, CAN bus, interface testing module, control test module and communication test mould Block is arranged on backboard, wherein interface testing module, control test module and communication test module are lamination setting.
It is advanced optimized as of the invention, interface testing module includes corresponding to interface in electronic brake control unit to open The interface switch that input/output module setting is measured in pass measures examination output input circuit, corresponds to interface in electronic brake control unit The interface frequency test output input circuit of frequency input/output module setting, corresponds to interface in electronic brake control unit The interface PWM test output input circuit of PWM input/output module setting, and correspond to interface in electronic brake control unit The interface analog output input circuit of analog input and output module setting.
It is advanced optimized as of the invention, control test module includes corresponding to control frequency in electronic brake control unit It is defeated to correspond to control analog input in electronic brake control unit for the control rate-adaptive pacemaker input circuit of rate input/output module The control analog output input circuit of module out, the control switch corresponding to power driver module in electronic brake control unit Measure input circuit, and the control switch amount output circuit corresponding to breakdown judge module in electronic brake control unit.
It is advanced optimized as of the invention, communication test module includes corresponding in electronic brake control unit to communicate mould The MVB communicating circuit of block corresponds to electronics system corresponding to the RS485 communicating circuit of communication module in electronic brake control unit The CAN communication circuit of communication module in dynamic control unit, the electric current loop corresponding to communication module in electronic brake control unit are logical Interrogate circuit, and the Ethernet communication circuit corresponding to communication module in electronic brake control unit.
It is advanced optimized as of the invention, power module includes EMC protection circuitry, excess temperature overvoltage crowbar and power supply Conversion circuit, to provide stable power supply for test macro.
It being advanced optimized as of the invention, test macro is multiple on host computer to be connected to side by side by CAN bus, Each test macro corresponds to an electronic brake control unit.
A kind of test method of electronic brake control unit uses the test macro of above-mentioned electronic brake control unit, packet Include following steps:
Test macro self-test: test macro be powered, start test macro in selftest module, in test macro module, Configuration information, port information and test program version inspection;
Selection test item: running the monitoring system of host computer, passes through the optional test item of monitoring system configuration display, test Item includes individual event test, multinomial test and system test;
Compare port whether match: host computer obtain test macro in selftest module self-test information, and in host computer Configuration information compare, to confirm whether port matches: such as port match, then carrying out in next step;If it does not match, stopping test And error message is prompted, to prevent port caused by the mismatch of test-types from damaging;
Send test instruction: host computer sends test to test macro and electronic brake control unit by CAN module Instruction, test macro and electronic brake control unit make to have in test macro and electronic brake control unit according to test instruction The port of the test function corresponds, and starts to test;
Test result is exported and is fed back to host computer by test macro and electronic brake control unit, and host computer shows, remembers Record and export the test result.
It advanced optimizes as of the invention, is tested in instruction step sending, it is specific: when the test instruction of transmission is When self-checking command, test macro is not responding to, and electronic brake control unit instructs self-test according to test;When the test instruction of transmission is Mutually when inspection instruction, the direction of current test port is first judged according to test instruction, if it is input terminal, then test macro is according to survey Examination instruction exports corresponding test data, is tested by electronic brake control unit data, if it is output end, then electronics Brak control unit exports corresponding test data according to test instruction, is tested by test macro data, will finally survey Test result is compared with preset threshold in test instruction, and then determines the function of electronic brake control unit.
Compared with prior art, the advantages and positive effects of the present invention are:
1, electronic brake control unit test macro of the invention, it is one-to-one with module each in EBCU by being arranged Test module, test macro and EBCU realize point-to-point connection, make port covering comprehensively and line is simple;
2, test macro of the invention has self-test and defencive function, can prevent test module from mismatching with module to be measured and make At port damage;
3, electronic brake control unit test method of the invention only needs to carry out configuration operation and examination test in test As a result, the automatic test of realization, failure automatically record, convenient and efficient without intervening in test process;
4, test macro of the invention is designed using 3U structure, small in size, light-weight, can be used as portable device, and Configuration diversification, can be adapted to the EBCU of different model, effectively reduce cost;
5, test macro of the invention can simultaneously test more EBCU by multiple test macros in parallel, improve Testing efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of electronic brake control unit test macro of the present invention;
Fig. 2 is the schematic diagram of more test macros of the invention;
Fig. 3 is the flow chart of electronic brake control unit test method of the present invention.
Specific embodiment
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one In the case where step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments In.
It is the schematic diagram of electronic brake control unit test macro in the present invention referring to Fig. 1.As shown in Figure 1, present invention electricity The test macro of sub- brak control unit, the host computer of test macro operation can be monitored by CAN module connection, including is test System provide electric energy power module, and be electrically connected with power module interface testing module, control test module and lead to Test module is interrogated, the interface module that wherein interface testing module corresponds to electronic brake control unit is arranged, and controls test module Control module corresponding to electronic brake control unit is arranged, and communication test module corresponds to the communication of electronic brake control unit Module setting;It is connected by CAN bus between interface testing module, control test module and communication test module.The present invention Test macro and electronic brake control unit in the one-to-one connection of each module, realize port all standing test, CAN module It realizes that CAN turns Ethernet/USB/RS232, is connect with host computer, host computer is equipped with monitoring software, provides test execution, prison The man-machine interface of control and record.
Certainly, electronic brake control unit will be different according to project difference, module type and quantity in the present invention, and And the interface quantity and function of same type module are also not quite similar, but the port one of test macro and electronic brake control unit One is corresponding, realizes all standing of port, while test macro of the invention also uses modularized design;And it is applied to the present invention Cabinet using standard 3U structure design, different test modules, each module are inserted into for different electronic brake control units Between connected by CAN bus, also reserved slot position is for extension.
Continue as shown in Figure 1, CAN bus of the present invention, interface testing module, control test module and communication test module are equal It is arranged on backboard, wherein interface testing module, control test module and communication test module are lamination setting.Specifically, surveying Other such as CPU, CAN, isolation circuit, connector general-purpose device in die trial block may be provided on bottom plate, and interface testing Function, control test function and communication test function are arranged on daughter board, can configure different daughter boards for same type module, Interface quantity and function can be adjusted flexibly.
Further, interface testing module includes corresponding to interface switch amount input and output mould in electronic brake control unit The interface switch of block setting measures examination output input circuit, corresponds to interface frequency input and output mould in electronic brake control unit The interface frequency test output input circuit of block setting, corresponds to interface PWM input/output module in electronic brake control unit The interface PWM test output input circuit of setting, and correspond to interface analog input and output in electronic brake control unit The interface analog output input circuit of module setting;Control test module includes corresponding in electronic brake control unit to control The control rate-adaptive pacemaker input circuit of frequency input/output module, corresponding to controlling analog input in electronic brake control unit The control analog output input circuit of output module, the control corresponding to power driver module in electronic brake control unit are opened Measure input circuit, and the control switch amount output circuit corresponding to breakdown judge module in electronic brake control unit in pass;It is logical News test module includes the MVB communicating circuit corresponding to communication module in electronic brake control unit, corresponds to deceleration of electrons control RS485 (HDLC) communicating circuit of communication module in unit processed, the CAN corresponding to communication module in electronic brake control unit are logical Circuit is interrogated, corresponding to the current-loop communication circuit of communication module in electronic brake control unit, and corresponds to deceleration of electrons control The Ethernet communication circuit of communication module in unit processed.
For above-mentioned, illustrated with one embodiment: as shown in Figure 1, the present embodiment include 1 piece of power module, 3 pieces connect Mouth test module (respectively first interface test module, second interface test module and third interface testing module), 2 pieces of controls And 2 pieces of communication test modules are (respectively for test module (the respectively first control test module and the second control test module) First communication test module and the second communication test module).
Wherein, power module includes EMC protection circuitry, excess temperature overvoltage crowbar and power-switching circuit, passes through backboard Stable power supply is provided to each test module.
First interface test module includes that 6 road interface switches measure examination output circuit, 2 tunnel interface frequencies test output electricity Road, 8 road interface switches measure the in examination input circuit and 2 tunnel interface frequencies test input circuit, with electronic brake control unit 6 road interface switch amount input circuits of one interface module, 2 tunnel interface frequency input circuits, 8 road interface switch amount output circuits and 2 tunnel interface frequency output circuits correspond.
Second interface test module includes that 16 road interface switches measure examination output circuit and 4 tunnel interface frequencies test output electricity 16 road interface switch amount input circuits of second interface module and the input of 4 tunnel interface frequencies in road, with electronic brake control unit Circuit corresponds.
Third interface testing module includes 2 road interface analog quantitys test output circuit, 2 road interface analog quantitys test input electricity Third connects in road, 2 road interface PWM test output circuit and 2 road interface PWM test input circuit, with electronic brake control unit 2 road interface simulated measurement input circuits, 2 road interface analogue quantity output circuits, 2 road interface PWM input circuits and 2 tunnels of mouth mold block connect Mouth PWM output circuit corresponds.
First control test module includes 4 tunnels control frequency output circuitry, 4 tunnels control analogue quantity output circuit, the control of 8 tunnels Switching value input circuit and 8 way control switch amount output circuits are controlled with 4 tunnels of the first control module in electronic brake control unit Frequency input circuit processed, 4 tunnels control simulated measurement input circuit, and 8 road power driving circuits and 8 road fault judging circuit one are a pair of It answers.
Second control test module includes 4 tunnels control frequency output circuitry, 4 tunnels control analogue quantity output circuit, the control of 8 tunnels Switching value input circuit and 8 way control switch amount output circuits are controlled with 4 tunnels of the second control module in electronic brake control unit Frequency input circuit processed, 4 tunnels control simulated measurement input circuit, and 8 road power driving circuits and 8 road fault judging circuit one are a pair of It answers.
It between the first communication module is CAN communication in first communication test module and electronic brake control unit.
It is MVB communication between the second communication module in second communication test module and electronic brake control unit.
It should be further noted that the power module in the present invention includes EMC protection circuitry, excess temperature overvoltage crowbar And power-switching circuit, to provide stable power supply for test macro.
It referring to fig. 2, is the schematic diagram of more test macros in the present invention.As shown in Fig. 2, the test macro in the present invention can It is multiple for what is be set side by side, it is connected on host computer side by side by CAN bus, each test macro corresponds to a deceleration of electrons Control unit;By the way that each test macro is corresponded to different electronic brake control units, it can be achieved that multiple deceleration of electrons controls Unit processed realizes synchronism detection.
The present invention also provides a kind of test method of electronic brake control unit, which uses above-mentioned electronics system The test macro of dynamic control unit, as shown in figure 3, the test method the following steps are included:
Test macro self-test: test macro be powered, start test macro in selftest module, in test macro module, Configuration information, port information and test program version inspection;
Selection test item: running the monitoring system of host computer, passes through the optional test item of monitoring system configuration display, test Item includes individual event test, multinomial test and system test;
Compare port whether match: host computer obtain test macro in selftest module self-test information, and in host computer Configuration information compare, to confirm whether port matches: such as port match, then carrying out in next step;If it does not match, stopping test And error message is prompted, to prevent port caused by the mismatch of test-types from damaging;
Send test instruction: host computer sends test to test macro and electronic brake control unit by CAN module Instruction, test macro and electronic brake control unit make to have in test macro and electronic brake control unit according to test instruction The port of the test function corresponds, and starts to test;
Test result is exported and is fed back to host computer by test macro and electronic brake control unit, and host computer shows, remembers Record and export the test result.
Further, it is tested in instruction step in above-mentioned transmission, it is specific: when the test instruction of transmission is self-checking command When, test macro is not responding to, and electronic brake control unit instructs self-test according to test;When the test instruction of transmission is mutually inspection instruction When, the direction of current test port is first judged according to test instruction, if it is input terminal, then test macro is defeated according to test instruction Corresponding test data out tests data by electronic brake control unit, and if it is output end, then deceleration of electrons controls Unit exports corresponding test data according to test instruction, is tested by test macro data, finally by test result with Preset threshold is compared in test instruction, and then determines the function of electronic brake control unit.
For being specifically unfolded as follows for above-mentioned test instruction: test instruction includes On-off signal output test instruction, mould The instruction of analog quantity input/output test, the instruction of frequency quantity input/output test, the instruction of PWM input/output test, power drive test Instruction, fault test instruction, CAN communication test instruction, the instruction of MVB communication test, external storage test instruction, outer watchdog Test instruction.Test instruction includes test module ID, test data and level threshold value, is specifically retouched below for each test instruction State its test process:
(1) On-off signal output test: Monitor Computer Control System passes through CAN module to test macro and deceleration of electrons control Unit processed sends switching value test instruction, and the test module and module to be measured for meeting ID, which first determine, to be input or export, if It is input, then for test module according to instruction output high level or low level, module to be measured carries out the acquisition of switching value, and will acquisition As a result be compared with preset threshold, instruct for it is low and adopt be low or instruction be it is high and adopt be it is high, module to be measured is normal, Otherwise failure;If it is output then conversely, module to be measured exports, test module acquires and determines whether module to be measured is normal.
(2) analog input and output is tested: Monitor Computer Control System passes through CAN module to test macro and deceleration of electrons control Unit processed sends analog quantity test instruction, and the test module and module to be measured for meeting ID, which first determine, to be input or export, if It is input, then test module is according to instruction output voltage or electric current, and module to be measured carries out the acquisition of analog quantity, and by collection result It is compared with preset threshold, if within the range of permission, module to be measured is normal, otherwise failure;If it is output then conversely, Module output to be measured, test module acquire and determine whether module to be measured is normal.
(3) frequency quantity input/output test: Monitor Computer Control System passes through CAN module to test macro and deceleration of electrons control Unit processed sends frequency quantity test instruction, and the test module and module to be measured for meeting ID, which first determine, to be input or export, if Be input, then test module according in instruction frequency and duty ratio exported, frequency is divided into high frequency or low frequency, duty ratio Divide size, module to be measured carries out the acquisition of frequency quantity, and collection result is compared with preset threshold, if frequency and duty ratio Within the scope of error allows, module to be measured is normal, otherwise failure;If it is output then conversely, module to be measured output, is surveyed Die trial block acquires and determines whether module to be measured is normal.
(3) PWM input/output test: Monitor Computer Control System is controlled by CAN module to test macro and deceleration of electrons Unit sends PWM test instruction, and the test module and module to be measured for meeting ID first determine it is input or output, if it is defeated Enter, then test module according in instruction frequency and duty ratio exported, frequency is divided into high frequency or low frequency, and duty ratio is also divided greatly Small, module to be measured carries out the acquisition of PWM, and collection result is compared with preset threshold, if frequency and duty ratio are accidentally Within the scope of difference allows, module to be measured is normal, otherwise failure;If it is output then conversely, module to be measured output, test module It acquires and determines whether module to be measured is normal.
(4) power drive test instruction: Monitor Computer Control System is controlled by CAN module to test macro and deceleration of electrons Unit sends power drive test instruction, and the module to be measured for meeting ID carries out power output according to instruction, and test module is by opening Pass amount channel is acquired, instruct for it is low and adopt be low or instruction be it is high and adopt be it is high, module to be measured is normal, otherwise therefore Barrier.
(5) fault test instructs: Monitor Computer Control System passes through CAN module to test macro and electronic brake control unit Fault test instruction is sent, the test module for meeting ID simulates open circuit or short trouble, mould to be measured by relay according to instruction Consistent module then to be measured is normal with instruction for the breakdown judge result of block, otherwise failure.
(6) CAN communication is tested: Monitor Computer Control System passes through CAN module to test macro and electronic brake control unit CAN communication test instruction is sent, the communication test module for meeting ID sends default fixed data to module to be measured by CAN, to After survey module receives this data, it is iterated processing, and processing result is sent to test module, test module evidence by CAN This determines whether the communication of CAN is normal.
(7) MVB communication test: Monitor Computer Control System passes through CAN module to test macro and electronic brake control unit The instruction of MVB communication test is sent, the communication test module simulation and module to be measured for meeting ID are communicated, and are sent out by MVB to it After sending default fixed data, module to be measured to receive this data, it is iterated processing, and processing result is sent to survey by MVB Die trial block, test module determine whether the communication of MVB is normal accordingly.
(8) external storage is tested: Monitor Computer Control System passes through CAN module to test macro and electronic brake control unit External storage test instruction is sent, test macro does not respond, and place is write in the sector for meeting the module to be measured progress external storage of ID Reason, then carries out sector reading processing again, the result read is compared with the data of write-in, completely the same then normal, otherwise Failure.
(9) outer watchdog is tested: Monitor Computer Control System is single to test macro and deceleration of electrons control by CAN module Member sends outer watchdog test instruction, and test macro does not respond, and the module to be measured for meeting ID stops feeding dog, reads after restarting Special function register checks whether and watchdog reset has occurred.

Claims (1)

1. a kind of test method of electronic brake control unit, uses the test macro of electronic brake control unit, the electronics system The test macro of dynamic control unit, outer company can monitor the host computer of test macro operation, including providing electric energy for test macro Power module, and the interface testing module, control test module and the communication test module that are electrically connected with power module, wherein The interface module that interface testing module corresponds to electronic brake control unit is arranged, and control test module corresponds to deceleration of electrons control The control module of unit processed is arranged, and the communication module that communication test module corresponds to electronic brake control unit is arranged;Interface is surveyed It is connected by CAN bus between die trial block, control test module and communication test module;Test macro is to pass through CAN bus Side by side be connected to it is multiple on host computer, each test macro correspond to an electronic brake control unit, it is characterised in that: packet Include following steps:
Test macro self-test: test macro is powered, and starts selftest module in test macro, to the module in test macro, configuration Information, port information and test program version inspection;
Selection test item: running the monitoring system of host computer, passes through the optional test item of monitoring system configuration display, test item packet Include individual event test, multinomial test and system test;
Compare port whether match: host computer obtain test macro in selftest module self-test information, and with matching in host computer Information comparison is set, to confirm whether port matches: such as port match, then carrying out in next step;If it does not match, stopping testing and mentioning Show error message, to prevent port caused by the mismatch of test-types from damaging;
Send test instruction: host computer sends test instruction to test macro and electronic brake control unit by CAN module, Test macro and electronic brake control unit make in test macro and electronic brake control unit according to test instruction with the survey The port for trying function corresponds, and starts to test;When the test of transmission instruction is self-checking command, test macro is not responding to, Electronic brake control unit instructs self-test according to test;When the test of transmission instruction is mutually examines instruction, first instructed according to test The direction for judging current test port, if it is input terminal, then test macro exports corresponding test data according to test instruction, Data are tested by electronic brake control unit, if it is output end, then electronic brake control unit is instructed according to test Corresponding test data is exported, data are tested by test macro, finally will preset threshold in test result and test instruction Value is compared, and then determines the function of electronic brake control unit;
Test result is exported and is fed back to host computer by test macro and electronic brake control unit, host computer shows, record and Export the test result.
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