CN105446312A - Car body electric control system testing platform based on hardware-in-the-loop - Google Patents
Car body electric control system testing platform based on hardware-in-the-loop Download PDFInfo
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Abstract
The invention discloses a car body electric control system testing platform based on hardware-in-the-loop. The car body electric control system testing platform comprises an upper computer (1), a testing equipment cabinet (2), a mobile terminal bench (3) and a laboratory car bench (4). The testing equipment cabinet is composed of a plurality of modules. The terminal bench is used for connection among the testing equipment cabinet, a controller to be tested and the laboratory car bench. The laboratory car bench is used for constructing switches of the whole car body and real loads. The upper computer is connected with a PXI real-time controller in the testing equipment cabinet through a network cable and monitors the operation of the testing platform in real time. An equipment cabinet power supply input module of the testing equipment cabinet is externally connected with a power supply and realizes power distribution and system protection of the equipment cabinet power supply. The mobile terminal bench is connected with the testing equipment cabinet through an equipment cabinet panel connector, is connected with the laboratory car bench and the controller to be tested through wire harnesses and is capable of simulating excitation signals of the controller to be tested. A controller fault injection module is capable of simulating a to-ground short circuit fault, a to-power-supply short circuit fault and an open circuit fault and is used for testing the fault diagnosis function of the controller.
Description
Technical field
The present invention relates to a kind of automobile electric appliance system test unit and method, particularly relating to a kind of for verifying vehicle body electric-control system, comprising hardware in loop (HIL) test platform entering start-up connector (PEPS), car body controller (BCM), self-adaptation headlight adjustment control (AFS) and instrument (IPK) four vehicle body ECU (Electrical Control Unit) without key.
Background technology
Because automobile electric appliance system is increasingly sophisticated, in new car model development process, need to carry out functional test, performance test and diagnostic test to vehicle body electric-control system, guarantee the reliability and stability of body electric system.Current most automobile electronics test builds test environment by manual stand, and reusability is low, and be difficult to simulation limiting condition or dynamic operation condition, higher to tester's dependence, testing efficiency is low; Partial automation equipment can only test single automobile electronic controller, cannot carry out integration testing, or can only simulate static environment, can not carry out dynamic test.
In order to overcome the above problems, need one can carry out modeling and simulating for tested vehicle, for vehicle body electric-control system provides one close to car load actual motion environment, various operating mode and fault mode can be simulated, realize hardware in loop (HIL) test platform of the vehicle body electric-control system of multiple controller integration testing.
Summary of the invention
The object of the present invention is to provide a kind of vehicle body electric-control system test platform based on hardware in loop, this test platform can carry out modeling and simulating to tested vehicle, for vehicle body electric-control system provides one close to car load actual motion environment; This test platform can simulate limiting condition or dynamic operation condition, can reappear fault mode fast, can realize the integrated matching test of multiple controller, thus improves testing efficiency.
In order to realize above-mentioned technical purpose, the present invention adopts following technical scheme:
Based on a vehicle body electric-control system test platform for hardware in loop, comprise host computer, test cabinet, removable terminal board and laboratory automobile stand;
Described test cabinet is made up of multiple module, comprises rack Power Entry Module, programmable power supply, electrical source exchange module, engine controller and gearbox control, load box, PXI real-time controller, engine controller and gearbox control input fault injection module, engine controller and gearbox control load faulty injection module, hardware board;
Described removable terminal board is used for the connection of test cabinet, controller to be measured and laboratory automobile stand, removable terminal board comprises stand electrical source exchange module, controller input fault injection module to be measured, controller load faulty injection module to be measured, terminal board, and controller to be measured is installed on terminal board;
Described laboratory automobile stand is used for building car load vehicle body switch and real load;
Described host computer is connected with the PXI real-time controller in test cabinet by netting twine, and real-time control and measuring platform runs; Described PXI real-time controller is connected by backboard with hardware board, and with the exchanges data of engine mockup, hardware board is also connected by wire harness with engine controller, gearbox control, load box simultaneously, analogue stimulus signal, measures output signal;
Rack Power Entry Module external power supply in described test cabinet, realizes the power division of rack power supply, system protection;
Described test cabinet is connected with laboratory automobile stand by wire harness, realizes the power supply of stand; Described removable terminal board is connected with test cabinet by cabinet panel connector, be connected with laboratory automobile stand and controller to be measured by wire harness, simulate controller pumping signal to be measured, measure controller output signal to be measured, realized the switching of laboratory bench power supply status simultaneously by the stand electrical source exchange module on removable terminal board;
Engine controller on described test cabinet is connected with engine controller and gearbox control input end with gearbox control input fault injection module one end, the other end is connected to hardware board, simulated engine controller and gearbox control input signal shorted to earth, to power supply short circuit, open fault; Engine controller on described test cabinet is connected with engine controller and gearbox control output terminal with gearbox control load faulty injection module one end, the other end is connected respectively to load and hardware board, simulated engine controller and gearbox control load shorted to earth, to power supply short circuit, open fault;
Controller input fault injection module one end to be measured on described removable terminal board is connected with controller input end to be measured, the other end is connected to hardware board by cabinet panel connector, simulates controller input signal shorted to earth to be measured, to power supply short circuit, open fault; Controller load faulty injection module one end to be measured on described removable terminal board is connected with controller output end to be measured, the other end is connected to hardware board by cabinet panel connector, be connected to stand load by wire harness, simulate controller load shorted to earth to be measured, to power supply short circuit, open fault.
Described hardware board comprises simulation of engine signal generating module, analog signals generation module, analog signals measurement module, digital quantity signal generation module, digital quantity signal measurement module, pwm signal generation module, pwm signal measurement module, resistance simulation signal generating module, current analog signal generation module, current signal measurement module, CAN communication module, LIN communication module.
Described test cabinet external AC power supply, change through rack Power Entry Module, be divided into exchanging and export and direct current output, wherein exchange to export and power for PXI real-time controller and programmable power supply, direct current exports and powers for engine controller and gearbox control direct fault location module, electrical source exchange module, hardware board, and pass through the cabinet panel connector of connecting test rack and removable terminal board, be the controller failure injection module to be measured on removable terminal board and stand electrical source exchange module for power supply.
Described programmable power supply out-put supply signal is after electrical source exchange module exports, simulation car load power supply status, for powering for engine controller, gearbox control and load box, and transmit power supply signal to the stand electrical source exchange module on removable terminal board by cabinet panel connector, synchronous car load power supply status, for controller to be measured is powered, and be stand switch on the automobile stand of laboratory and load supplying by wire harness.
Further, by wire harness, test cabinet power supply signal is connected to laboratory automobile stand, and by connecting the wire harness between removable terminal board and laboratory automobile stand, transmit power supply signal to the stand electrical source exchange module on removable terminal board, realize the mutual of removable terminal board and laboratory automobile stand power supply signal.
Test platform of the present invention proposes for the defect of manual bench test, can carry out modeling and simulating to tested vehicle, for vehicle body electric-control system provides one close to car load actual motion environment, and can take into account manual test and automatic test.This test platform can simulate limiting condition or dynamic operation condition, can reappear fault mode fast, can realize the integrated matching test of multiple controller, organization and administration can be carried out to test process, realize automatic test, reduce the labour expenditure of testing crew, improve testing efficiency; And this test platform adopts modular design, is easy to maintenance and expansion power of test.
Test platform of the present invention is compared with existing test macro, and its good effect is:
1, test cabinet, removable terminal board and stand can move, and can reduce rat tail length, convenient connection, are easy to arrange.
2, test cabinet adopts modular design, is convenient to later maintenance, and according to new demand, can increases configuration fast, shortens the construction cycle.
3, host computer adopts the NIVeriStand real time test software based on configuration, can the graphic interface of fast Development close friend, reduces the cost of program interface exploitation, realizes manual test; And this software can be composed on the different road conditions roads of playback, simulation car load dynamic environment, realizes the integrated matching test of HIL dynamic test and controller to be measured.
4, host computer adopts NITeststand supervision test software, can management testing process, adopt multithreading simultaneously, can concurrent testing, automaticity is high, effectively can reduce the labour intensity of testing crew, increase work efficiency, avoid the error produced because of manual operation, overcome the defect of manual bench test.
5, this test platform adopts direct fault location module, can reappear fault mode fast, realize fault diagnosis functions.
Accompanying drawing explanation
Fig. 1 is that the vehicle body electric-control system test platform power supply signal that the present invention is based on hardware in loop transmits schematic diagram;
Fig. 2 is that test platform control signal of the present invention transmits schematic diagram;
Fig. 3 is test platform test flow chart of the present invention.
In figure: 1 host computer, 2 test cabinets, 3 removable terminal boards, 4 laboratories automobile stand (stand).
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
See Fig. 2, a kind of vehicle body electric-control system test platform based on hardware in loop (HIL), comprises host computer (PC) 1, test cabinet 2, removable terminal board 3 and laboratory automobile stand 4.
Described test cabinet 2 is made up of multiple module, comprise rack Power Entry Module, programmable power supply, electrical source exchange module, engine controller (EMS) and gearbox control (TCU), load box, PXI real-time controller (slave computer), engine controller and gearbox control direct fault location module, hardware board, wherein hardware board comprises simulation of engine signal generating module, analog signals generation module, analog signals measurement module, digital quantity signal generation module, digital quantity signal measurement module, pwm signal generation module, pwm signal measurement module, resistance simulation signal generating module, current analog signal generation module, current signal measurement module, CAN communication module, LIN communication module.Described engine controller and gearbox control direct fault location module comprise engine controller and gearbox control input fault injection module, engine controller and gearbox control load faulty injection module.
Described removable terminal board 3 is for the connection of test cabinet 2, controller to be measured and laboratory automobile stand 4, controller to be measured comprises and enters start-up connector (PEPS), car body controller (BCM), self-adaptation headlight adjustment control (AFS) and instrument (IPK) without key, removable terminal board 3 comprises stand electrical source exchange module, controller failure injection module to be measured, terminal board, and controller to be measured is installed on terminal board.Described controller failure injection module to be measured comprises controller input fault injection module to be measured, controller load faulty injection module to be measured.
Described laboratory automobile stand 4 is for building car load vehicle body switch and real load; Laboratory automobile stand real load has: enter without key and start Ore-controlling Role (PEPS) antenna, rain shaving electrical machine, glass lifting motor, fan blower, warm braw motor, cleansing solution kettle, electric control door lock mechanism, driven rearview mirrors, front combination lamp, rear combination lamp, indoor lamp, side steering indicating light installed, loudspeaker, electronic fan, cigar lighter, inverter, reverse radar system, system for detecting tire pressure and entertainment systems.
Described host computer 1 is connected with the PXI real-time controller (slave computer) in test cabinet 2 by netting twine, and real-time control and measuring platform runs; Described PXI real-time controller (slave computer) is connected by backboard with hardware board, with the exchanges data of engine mockup, hardware board is also connected by wire harness with engine controller (EMS), gearbox control (TCU), load box simultaneously, analogue stimulus signal, measures output signal.
Rack Power Entry Module in described test cabinet 2 connects 220V external power supply, realizes the power division of rack power supply, system protection.
Described test cabinet 2 is connected with laboratory automobile stand 4 by wire harness, realizes the power supply of stand; Described removable terminal board 3 is connected with test cabinet 2 by cabinet panel connector, be connected with laboratory automobile stand 4 and controller to be measured by wire harness, simulate controller pumping signal to be measured, measure controller output signal to be measured, realized the switching of laboratory bench 4 power supply status simultaneously by the stand electrical source exchange module on removable terminal board 3.
Engine controller on described test cabinet 2 is connected with engine controller and gearbox control input end with gearbox control input fault injection module one end, the other end is connected to hardware board, simulated engine controller and gearbox control input signal shorted to earth, to power supply short circuit, open fault; Engine controller on described test cabinet 2 is connected with engine controller and gearbox control output terminal with gearbox control load faulty injection module one end, the other end is connected respectively to load and hardware board, simulated engine controller and gearbox control load shorted to earth, to power supply short circuit, open fault.
Controller input fault injection module one end to be measured on described removable terminal board 3 is connected with controller input end to be measured, the other end is connected to hardware board by cabinet panel connector, simulates controller input signal shorted to earth to be measured, to power supply short circuit, open fault; Controller load faulty injection module one end to be measured on described removable terminal board 3 is connected with controller output end to be measured, the other end is connected to hardware board by cabinet panel connector, be connected to stand load by wire harness, simulate controller load shorted to earth to be measured, to power supply short circuit, open fault.
Described host computer 1 adopts the NIVeriStand real time test software based on configuration, NIVeriStand real time test software in host computer 1 can set up mapping between model variable and board hardware corridor, thus control programmable power supply output, control electrical source exchange module, real vehicle power supply status can be simulated.
For further illustrating test platform power distribution, describe in detail below in conjunction with Fig. 1:
The external 220V AC power of described test cabinet 2, through the conversion of rack Power Entry Module, is divided into 220V to exchange and exports and DC15V output.Wherein 220V exchanges to export and powers for PXI real-time controller and programmable power supply, DC15V exports and powers for engine controller and gearbox control input fault injection module, engine controller and gearbox control load faulty injection module, electrical source exchange module, hardware board, and pass through the cabinet panel connector of connecting test rack 2 and removable terminal board 3, be embodied as the controller input fault injection module to be measured on removable terminal board 3, controller load faulty injection module to be measured and stand electrical source exchange module for power supply.Programmable power supply out-put supply signal is after electrical source exchange module exports, simulation car load power supply status, for powering for engine controller (EMS), gearbox control (TCU) and load box, and transmit power supply signal to the stand electrical source exchange module on removable terminal board 3 by cabinet panel connector, synchronous car load power supply status, for controller to be measured is powered, and be stand switch on stand 4 and load supplying by wire harness; Simultaneously, for preventing stand load current excessive, by wire harness, test cabinet 2 power supply signal is connected to stand 4, and by connecting the wire harness between removable terminal board 3 and stand 4, transmit power supply signal to the stand electrical source exchange module on removable terminal board 3, realize the mutual of removable terminal board 3 and stand 4 power supply signal.
NIVeriStand real time test software in described host computer 1 can set up mapping between model variable and board hardware corridor, thus each controller (engine controller (EMS) of excitation passage with the modules distributed in test cabinet 2, gearbox control (TCU) and controller to be measured) each PIN set up one-to-one relationship, such as, the output PIN of engine controller (EMS) ignition signal can with an expanding channels in simulation of engine signal generating module in test cabinet 2, map by setting up at NIVeriStand real time test software, engine controller (EMS) ignition signal that board hardware corridor can be collected is as source dates, variable corresponding in model is as target component, complete the transmission of parameter, thus complete the configuration of test cabinet 2 module board.
Described host computer adopts the NIVeriStand real time test software based on configuration, the display of this Integrated Simulation curve control, numerical monitor control, shift knob control, list control, waveform chart control and self-defining instrument display control, by mapping board passage and model variable, can the graphic interface of fast Development close friend.
Described host computer adopts the NIVeriStand real time test software based on configuration, this software can compose (Excel file) in the different road conditions road of playback, form with test cabinet, removable terminal board, laboratory automobile stand and controller to be measured, car load dynamic environment can be simulated, realize the HIL test under different road conditions and the integrated matching test of controller to be measured.
Described host computer adopts NITeststand supervision test software, by test case is carried out Ordering according to test function according to TestCase and TestGroup, form test case bag, cover the difference configuration under same vehicle, adopt multithreading simultaneously, can concurrent testing.
For further illustrating this working of an invention mode, with the test that automatically latches, testing process is described in detail below:
See Fig. 3, start runs NITeststand program, initialization NIVeriStand engineering, sends test instruction; After slave computer receives instruction, different road conditions road spectrum (Excel file) of playback, with its dependent variable according to various combination and sequential build testing procedure, and call operation model dynamic link library (DLL) thereon, carry out data interaction with model, calculate corresponding parameter, according to the mapping relations between NI hardware board and variable, encourage corresponding board passage, analog power state, drive corresponding controller pin pin; Electrical source exchange enters state to be measured to test pattern, controller to be measured, is antitheftly verified, and engine controller (EMS) and gearbox control (TCU) run; Electric source modes is correct, and controller initialization to be measured completes, and dynamic test condition meets, and controller to be measured drives load; The load signal collected is delivered to slave computer by NI hardware board, after mutual with model, is delivered to the VeriStand program display on host computer through slave computer; NITeststand supervision test software calls VeriStand variable, contrasts with expectation value, judges whether controller function to be measured meets the requirements.And finally export test report.
These are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, therefore, all any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. based on a vehicle body electric-control system test platform for hardware in loop, it is characterized in that: comprise host computer (1), test cabinet (2), removable terminal board (3) and laboratory automobile stand (4);
Described test cabinet (2) is made up of multiple module, comprises rack Power Entry Module, programmable power supply, electrical source exchange module, engine controller and gearbox control, load box, PXI real-time controller, engine controller and gearbox control input fault injection module, engine controller and gearbox control load faulty injection module, hardware board;
Described removable terminal board (3) is for the connection in test cabinet (2), controller to be measured and laboratory automobile stand (4), removable terminal board (3) comprises stand electrical source exchange module, controller input fault injection module to be measured, controller load faulty injection module to be measured, terminal board, and controller to be measured is installed on terminal board;
Described laboratory automobile stand (4) is for building car load vehicle body switch and real load;
Described host computer (1) is connected with the PXI real-time controller in test cabinet (2) by netting twine, and real-time control and measuring platform runs; Described PXI real-time controller is connected by backboard with hardware board, and with the exchanges data of engine mockup, hardware board is also connected by wire harness with engine controller, gearbox control, load box simultaneously, analogue stimulus signal, measures output signal;
Rack Power Entry Module external power supply in described test cabinet (2), realizes the power division of rack power supply, system protection;
Described test cabinet (2) is connected with laboratory automobile stand (4) by wire harness, realizes the power supply of stand; Described removable terminal board (3) is connected with test cabinet (2) by cabinet panel connector, be connected with laboratory automobile stand (4) and controller to be measured by wire harness, simulate controller pumping signal to be measured, measure controller output signal to be measured, realized the switching of laboratory bench (4) power supply status simultaneously by the stand electrical source exchange module on removable terminal board (3);
Engine controller on described test cabinet (2) is connected with engine controller and gearbox control input end with gearbox control input fault injection module one end, the other end is connected to hardware board, simulated engine controller and gearbox control input signal shorted to earth, to power supply short circuit, open fault; Engine controller on described test cabinet (2) is connected with engine controller and gearbox control output terminal with gearbox control load faulty injection module one end, the other end is connected respectively to load and hardware board, simulated engine controller and gearbox control load shorted to earth, to power supply short circuit, open fault;
Controller input fault injection module one end to be measured on described removable terminal board (3) is connected with controller input end to be measured, the other end is connected to hardware board by cabinet panel connector, simulates controller input signal shorted to earth to be measured, to power supply short circuit, open fault; Controller load faulty injection module one end to be measured on described removable terminal board (3) is connected with controller output end to be measured, the other end is connected to hardware board by cabinet panel connector, be connected to stand load by wire harness, simulate controller load shorted to earth to be measured, to power supply short circuit, open fault.
2. the vehicle body electric-control system test platform based on hardware in loop according to claim 1, is characterized in that: described hardware board comprises simulation of engine signal generating module, analog signals generation module, analog signals measurement module, digital quantity signal generation module, digital quantity signal measurement module, pwm signal generation module, pwm signal measurement module, resistance simulation signal generating module, current analog signal generation module, current signal measurement module, CAN communication module, LIN communication module.
3. the vehicle body electric-control system test platform based on hardware in loop according to claim 1, it is characterized in that: described test cabinet (2) external AC power supply, change through rack Power Entry Module, be divided into exchanging and export and direct current output, wherein exchange to export and power for PXI real-time controller and programmable power supply, direct current exports as engine controller and gearbox control direct fault location module, electrical source exchange module, hardware board is powered, and be controller failure injection module to be measured on removable terminal board (3) and stand electrical source exchange module for power supply by the cabinet panel connector of connecting test rack (2) and removable terminal board (3).
4. the vehicle body electric-control system test platform based on hardware in loop according to claim 3, it is characterized in that: programmable power supply out-put supply signal is after electrical source exchange module exports, simulation car load power supply status, for powering for engine controller, gearbox control and load box, and transmit power supply signal to the stand electrical source exchange module on removable terminal board (3) by cabinet panel connector, synchronous car load power supply status, for controller to be measured is powered, and be stand switch on laboratory automobile stand (4) and load supplying by wire harness.
5. the vehicle body electric-control system test platform based on hardware in loop according to claim 4, it is characterized in that: by wire harness, test cabinet (2) power supply signal is connected to laboratory automobile stand (4), and by connecting the wire harness between removable terminal board (3) and laboratory automobile stand (4), transmit power supply signal to the stand electrical source exchange module on removable terminal board (3), realize the mutual of removable terminal board (3) and laboratory automobile stand (4) power supply signal.
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