CN104819740B - Automobile combination instrument test system and method based on CAN - Google Patents
Automobile combination instrument test system and method based on CAN Download PDFInfo
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Abstract
Based on the automobile combination instrument test system and method for CAN, it is related to automobile instrument field tests.The test process for solving existing automobile combination meter is complicated, it is impossible to realize the problem of the simulation of input quantity.Consecutive variations amount and 0/1 variable quantity during present invention difference simulated automotive use, realize the simulation to automobile combination meter input quantity, and signal is sent to simultaneously by meters under test and virtual instrument controller by CAN, virtual instrument controller is shown by master meter display module, Validity Test to automobile combination meter performance, the risk being effectively reduced in development process are realized further.The present invention is applied to the test of automobile integrative instrument.
Description
Technical field
The present invention relates to automobile instrument field tests.
Background technology
In automobile instrument production process, it usually needs the sample to first producing is tested, or batch production
Instrument is sampled test, but complicated to the test process of instrument now, and great majority are all the realities by the way of manual detection
It is existing, and to different parameters using different testing equipments realizing detection, detection short time consumption length, efficiency are low, and need
Various testing equipments coordinate to be realized, testing cost is high.
The content of the invention
The present invention is to solve the problems, such as that the test process of existing automobile combination meter is complicated, time-consuming, high cost, carrying
A kind of automobile combination instrument test system and method based on CAN is gone out.
Automobile combination instrument test system based on CAN of the present invention, it includes CAN and CAN
Interface circuit, it also includes test device, and the test device has been internally embedded analogue data input module, master meter and has shown
Module, antiskid brake pilot controller, engine controller, gearbox control and virtual instrument controller；
Analogue data input module includes consecutive variations amount analog module and 0/1 variable quantity analog module；
Consecutive variations amount analog module：For simulating the GES for producing change, tach signal, water temperature signal, gear
Signal and oil consumption signal, and GES is sent to antiskid brake pilot controller, by tach signal, water temperature signal and oil consumption
Signal is sent to engine controller, and gear signal is sent to gearbox control；
0/1 variable quantity analog module：Produce engine MIL fault-signals, engine SVS fault-signals, stop for simulating
Car system failure signal, ABS system fault-signal, AT system failures signal or failure alarm signal, and produced is stopped
Car system failure signal and ABS system fault-signal are sent to antiskid brake pilot controller；By engine MIL fault-signals and
Engine SVS fault-signals are sent simultaneously to engine controller；Failure alarm signal is sent to gearbox control；
Antiskid brake pilot controller is used for the GES and 0/1 variable quantity for receiving the transmission of consecutive variations amount analog module
Brake system fault-signal and ABS system fault-signal that analog module sends, and the signal for receiving is connect by CAN
Mouth circuit is sent to CAN；
Engine controller is used to receive the tach signal of consecutive variations amount analog module transmission, water temperature signal and oil consumption letter
Number and the engine MIL fault-signals that send of 0/1 variable quantity analog module and engine SVS fault-signals, and will receive
Signal is sent to CAN by CAN interface circuit；
Gearbox control is used for the gear signal for receiving the transmission of consecutive variations amount analog module and 0/1 variable quantity simulation mould
The failure alarm signal that block sends, and the signal for receiving is sent to CAN by CAN interface circuit；
Virtual instrument controller is used to receive GES, brake system fault-signal, ABS system event by CAN
Barrier signal, tach signal, water temperature signal, oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear letter
Number and failure alarm signal；And all signals for receiving are sent to master meter display module；
Master meter display module for by receive all signals carry out display output.
Based on the automobile combination instrument test method of CAN, the method includes：
The step of analogue data is input into；
The step includes：
For simulating the change of the GES for producing change, tach signal, water temperature signal, gear signal and oil consumption signal
Consecutive variations amount simulation sub-step；The sub-step is additionally operable to GES, tach signal, water temperature signal, gear signal
Send with oil consumption signal；
For simulate produce engine MIL fault-signals, engine SVS failures, brake system failure, ABS system failure,
The sub-step of the 0/1 variable quantity simulation of the AT system failures and fault alarm；The sub-step is additionally operable to believe engine MIL failures
Number, engine SVS fault-signals, brake system fault-signal, ABS system fault-signal, AT system failures signal and failure report
Alert signal sends；
For receiving GES and brake system fault-signal, brake system fault-signal and ABS system fault-signal,
And the step of the signal for receiving is sent；
For receiving tach signal, water temperature signal and oil consumption signal, engine MIL fault-signals and engine SVS failures
Signal, and the step of the signal for receiving is sent；
For receiving gear signal and failure alarm signal, and the step of the signal for receiving is sent；
For receive brake system fault-signal, ABS system fault-signal, tach signal, water temperature signal, oil consumption signal,
The parallel signal of engine MIL fault-signals, engine SVS fault-signals, gear signal and failure alarm signal；And will receive
To signal send the step of；
For receive GES, brake system fault-signal, ABS system fault-signal, tach signal, water temperature signal,
Oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear signal and failure alarm signal, and to being connect
The step of all signals received carry out display output；
Automobile instrument to be measured receives GES, brake system fault-signal, ABS system failure by receiving CAN
Signal, tach signal, water temperature signal, oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear signal
And failure alarm signal, and the step of be observed to the signal that automotive meter to be measured shows；
The automobile instrument to be measured of observation shown into that the signal exported in signal and display output step is contrasted, realization
Test to automobile combination meter to be measured.
The present invention realizes the function of the various vehicle signals of simulation using analogue data input module, and will simulate what is produced
Signal is sent to the automobile function module of correlation, and these automobile function modules are automobile existing module, these modules and instrument to be measured
The connected mode of table is also adopted by the connected mode of the CAN of existing automobile, and then realizes to automobile combination meter performance
Validity Test, the risk being effectively reduced in development process.
R＆D personnel can be mutually authenticated with test environment designer, it is easier to pinpointed the problems；And means of testing
Simply, intuitively, effectively.Test operation personnel only need to simple declaration training and can just participate in test；Testing efficiency is high.In product
Criticize antenatal, the demand of small-lot testing can be met completely；Test platform has certain autgmentability after setting up, and can answer after debugging
For multiple projects.
Description of the drawings
Fig. 1 is the theory diagram of the automobile combination instrument test system based on CAN of the present invention.
Specific embodiment
Specific embodiment one, present embodiment is illustrated with reference to Fig. 1, the automobile described in present embodiment based on CAN
Combination instrument test system, it includes CAN 7 and CAN interface circuit 8,
Characterized in that, it also include test device, the test device be internally embedded analogue data input module 1,
Master meter display module 2, antiskid brake pilot controller 3, engine controller 4, gearbox control 5, and virtual instrument
Controller 6；
Analogue data input module 1 includes consecutive variations amount analog module and 0/1 variable quantity analog module；
Consecutive variations amount analog module：For simulating the GES for producing change, tach signal, water temperature signal, gear
Signal and oil consumption signal, and GES is sent to antiskid brake pilot controller 3, by tach signal, water temperature signal and consumption
Oily signal is sent to engine controller 4, and gear signal is sent to gearbox control 5；
0/1 variable quantity analog module：Produce engine MIL fault-signals, engine SVS fault-signals, stop for simulating
Car system failure signal, ABS system fault-signal, AT system failures signal or failure alarm signal, and produced is stopped
Car system failure signal and ABS system fault-signal are sent to antiskid brake pilot controller 3；By engine MIL fault-signals
Sent to engine controller 4 with engine SVS fault-signals simultaneously；Failure alarm signal is sent to gearbox control 5；
Antiskid brake pilot controller 3 is used for GES and 0/1 change for receiving the transmission of consecutive variations amount analog module
Brake system fault-signal and ABS system fault-signal that amount analog module sends, and the signal for receiving is passed through into CAN
Interface circuit 8 is sent to CAN 7；
Engine controller 4 is used for tach signal, water temperature signal and the oil consumption for receiving the transmission of consecutive variations amount analog module
Engine MIL fault-signals and engine SVS fault-signals that signal and 0/1 variable quantity analog module send, and will receive
Signal sent to CAN 7 by CAN interface circuit 8；
Gearbox control 5 is used for gear signal and the simulation of 0/1 variable quantity for receiving the transmission of consecutive variations amount analog module
The failure alarm signal that module sends, and the signal for receiving is sent to CAN 7 by CAN interface circuit 8；
Virtual instrument controller 6 is used to receive GES, brake system fault-signal, ABS system by CAN 7
Fault-signal, tach signal, water temperature signal, oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear
Signal and failure alarm signal；And all signals for receiving are sent to master meter display module 2；
Master meter display module 2 for by receive all signals carry out display output.
Automobile combination instrument test method described in specific embodiment two, present embodiment based on CAN, the method
Including：
The step of analogue data is input into；
The step includes：
For simulating the change of the GES for producing change, tach signal, water temperature signal, gear signal and oil consumption signal
Consecutive variations amount simulation sub-step；The sub-step is additionally operable to GES, tach signal, water temperature signal, gear signal
Send with oil consumption signal；
For simulate produce engine MIL fault-signals, engine SVS failures, brake system failure, ABS system failure,
The sub-step of the 0/1 variable quantity simulation of the AT system failures and fault alarm；The sub-step is additionally operable to believe engine MIL failures
Number, engine SVS fault-signals, brake system fault-signal, ABS system fault-signal, AT system failures signal and failure report
Alert signal sends；
For receiving GES and brake system fault-signal, brake system fault-signal and ABS system fault-signal,
And the step of the signal for receiving is sent；
For receiving tach signal, water temperature signal and oil consumption signal, engine MIL fault-signals and engine SVS failures
Signal, and the step of the signal for receiving is sent；
For receiving gear signal and failure alarm signal, and the step of the signal for receiving is sent；
For receive brake system fault-signal, ABS system fault-signal, tach signal, water temperature signal, oil consumption signal,
The parallel signal of engine MIL fault-signals, engine SVS fault-signals, gear signal and failure alarm signal；And will receive
To signal send the step of；
For receive GES, brake system fault-signal, ABS system fault-signal, tach signal, water temperature signal,
Oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear signal and failure alarm signal, and to being connect
The step of all signals received carry out display output；
Automobile instrument to be measured receives GES, brake system fault-signal, ABS system failure by receiving CAN 7
Signal, tach signal, water temperature signal, oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear signal
And failure alarm signal, and the step of be observed to the signal that automotive meter to be measured shows；
The automobile instrument to be measured of observation shown into that the signal exported in signal and display output step is contrasted, realization
Test to automobile combination meter to be measured.
Present invention additionally comprises power supply and supporting wire harness, power supply is for the automobile combination instrument test system confession for CAN
Electricity.
1) database maintenance
Using software module integrated in CANoe --- CANdb++Editor.Carry out database maintenance.According to main engine plants
The signal list of offer is defined step by step to the message in the node of CAN network, node, the signal in message.
1) node, message, signal are set up according to order；
One 5 nodes are had in bus for the present invention：ABS (antiskid brake pilot controller), EMS (engines
Controller), IC (instrument), TCU (gearbox control) and virtual instrument.
Message contained by each node, and signal contained by each message is as shown in the table.
1 node message of table correspondence table
Create node, message, signal method it is fairly simple.In the object interface in the left side of CANdb++EDiter, have
Network nodes, Message, Signals classify, and define the attribute of node, message and signal；
2) set up network topology
In the simulation Setup interfaces of CANoe, network can be directly set up by way of importing database
Topology.
3) set up controlling interface
Controlling interface is mainly used in man-machine interaction.It is exactly the inputting interface of a test condition.
Interface can be completed using the Panel Designer modules in CANoe.
A, graphics edition interface
B, standard module toolbar
C, parameter column
Design process is that each standard module in B standard module tool hurdle is called in A, graphics edition interface, then
Enter line parameter definition in C parameter columns.It is this kind of for rotating speed input, speed input, water temperature input, oil consumption input, gear input
What many numerical value were imported needs to call Track Bar (trace bar) standard module；For engine failure, maintenance alarm signal,
Brake failure etc., this class is done signal and there was only 0/1 two states, needs to call check box standard modules；Now to this two type
Module is done a citing and is introduced.
For Track Bar (trace bar) here by ABS speeds input as a example by.
Step1：Track Bar (trace bar) standard module is dragged to the appropriate location in graphics edition interface；Make
With the size of mouse adjustment module；One text mark " rotating speed input " of insertion.Then the outward appearance of module is substantially true by this step
It is fixed；
Step2：Module parameter is configured；In controlling interface design, principal set up region is signal setting area.For
Speed is input into, and fills in 240 (the max speed is set to 240km/h) in Maximum, and Minimum fills in 0；Belong in bottom signal
Property filter) in Environment variable, then click on Symbol and can eject Parameter choice box, need exist for select a number
Inside storehouse, the environmental variance for pre-building.Usually several times design and environmental variance are created and are synchronously carried out, and this is provided with
Afterwards, just environmental variance can be changed by mouse drag progress bar.Meter is called to this environmental variance in a program
Calculate.
Setting for check box (check box) is as Track Bar (trace bar) module.Believed with engine failure
As a example by number：
Except for the difference that 1 will be put to environmental variance when Option Box is in selection state in setting, when Option Box is in non-
Selection state, will set to 0 to environmental variance.
4) set up test control interface
The method for building up at test control interface is similar with controlling interface, but the control for being used is visual output control
Part, that is, the outward appearance of control can change when affiliated environmental variance changes.This project using control have 3
Kind.It is Meter controls that speedometer and revolution counter are used respectively；The Switch/Indicator controls used by signal lamp；
The LCD Control controls used by little mileage etc..The parameter setting mode of this 3 controls is similar with previously described.Below
Do briefly introduction.
Meter：Dial plate angle of release can be set in attribute column, and Green Zone, Huang Qu, red sector scope set；
LCD Control：Need to arrange integer-bit and decimal place；
Switch/Indicator：For SES Service Engine Soon arrange enumerate it is as follows：
State Count writes 2, represent this environmental variance one and have two values being likely to occur；In Switch Values
Fill in 0；1 to represent the two values one be 0, and one is 1. to need to call in a picture in Image.Picture be divided into 3 it is interval,
First interval is default value, and second interval is shown when environmental variance is first value of Switch Values, the 3rd
Interval is shown when environmental variance is second value of Switch Values.So for this setting, as environmental variance LED_
During MIL==0, show that picture is empty；As environmental variance LED_MIL==1, show that picture shows engine.Thus complete
One signal lamp turns on/off the display process of simulation.
5) set up environmental variance
Environmental variance is the bridge between controlling interface, program and message input and output.
6) it is each node writing program
As 5 nodes are had in bus, so for each node needs individually to process.
Claims (2)
1. the automobile combination instrument test system based on CAN, it includes CAN (7) and CAN interface circuit (8),
Characterized in that, it also includes test device, the test device has been internally embedded analogue data input module (1), mark
It is quasi- meter display module (2), antiskid brake pilot controller (3), engine controller (4), gearbox control (5), and empty
Intend instrument controller (6)；
Analogue data input module (1) includes consecutive variations amount analog module and 0/1 variable quantity analog module；
Consecutive variations amount analog module：For simulating the GES for producing change, tach signal, water temperature signal, gear signal
With oil consumption signal, and GES is sent to antiskid brake pilot controller (3), by tach signal, water temperature signal and oil consumption
Signal is sent to engine controller (4), and gear signal is sent to gearbox control (5)；
0/1 variable quantity analog module：Engine MIL fault-signals, engine SVS fault-signals, brake system are produced for simulating
System fault-signal, ABS system fault-signal, AT system failures signal or failure alarm signal, and by produced brake system
System fault-signal and ABS system fault-signal are sent to antiskid brake pilot controller (3)；By engine MIL fault-signals and
Engine SVS fault-signals are sent simultaneously to engine controller (4)；Failure alarm signal is sent to gearbox control
(5)；
Antiskid brake pilot controller (3) for receive consecutive variations amount analog module transmission GES and 0/1 variable quantity
Brake system fault-signal and ABS system fault-signal that analog module sends, and the signal for receiving is connect by CAN
Mouth circuit (8) is sent to CAN (7)；
Engine controller (4) is believed for tach signal, water temperature signal and the oil consumption for receiving the transmission of consecutive variations amount analog module
Number and the engine MIL fault-signals that send of 0/1 variable quantity analog module and engine SVS fault-signals, and will receive
Signal is sent to CAN (7) by CAN interface circuit (8)；
Gearbox control (5) simulates mould for the gear signal and 0/1 variable quantity for receiving the transmission of consecutive variations amount analog module
The failure alarm signal that block sends, and the signal for receiving is sent to CAN (7) by CAN interface circuit (8)；
Virtual instrument controller (6) is for by CAN (7) reception GES, brake system fault-signal, ABS system
Fault-signal, tach signal, water temperature signal, oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear
Signal and failure alarm signal；And all signals for receiving are sent to master meter display module (2)；
Master meter display module (2) for by receive all signals carry out display output.
2. the automobile combination instrument test method based on CAN, it is characterised in that the method includes：
The step of analogue data is input into；
The step includes：
For simulating the company of the change of the GES for producing change, tach signal, water temperature signal, gear signal and oil consumption signal
The sub-step of continuous variable quantity simulation；The sub-step is additionally operable to GES, tach signal, water temperature signal, gear signal and consumption
Oily signal sends；
Engine MIL fault-signals, engine SVS failures, brake system failure, ABS system failure, AT systems are produced for simulating
The sub-step of the 0/1 variable quantity simulation of system failure and fault alarm；The sub-step is additionally operable to engine MIL fault-signals, sends out
Motivation SVS fault-signal, brake system fault-signal, ABS system fault-signal, AT system failures signal and failure alarm signal
Send；
For receiving GES and brake system fault-signal, brake system fault-signal and ABS system fault-signal, and will
The step of signal for receiving sends；
For receiving tach signal, water temperature signal and oil consumption signal, engine MIL fault-signals and engine SVS fault-signals,
And the step of the signal for receiving is sent；
For receiving gear signal and failure alarm signal, and the step of the signal for receiving is sent；
For receiving brake system fault-signal, ABS system fault-signal, tach signal, water temperature signal, oil consumption signal, starting
The parallel signal of machine MIL fault-signals, engine SVS fault-signals, gear signal and failure alarm signal；And will receive
The step of signal sends；
For receiving GES, brake system fault-signal, ABS system fault-signal, tach signal, water temperature signal, oil consumption
Signal, engine MIL fault-signals, engine SVS fault-signals, gear signal and failure alarm signal, and to being received
The step of all signals carry out display output；
Automobile instrument to be measured receives GES, brake system fault-signal, ABS system failure letter by receiving CAN (7)
Number, tach signal, water temperature signal, oil consumption signal, engine MIL fault-signals, engine SVS fault-signals, gear signal and
Failure alarm signal, and the step of be observed to the signal that automotive meter to be measured shows；
The automobile instrument to be measured of observation shown into that the signal exported in signal and display output step is contrasted, realizes treating
Survey the test of automobile combination meter.
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| CN108407738B (en) * | 2018-02-12 | 2021-06-25 | 中国第一汽车股份有限公司 | Fault prompting method for combined lighting of fault lamps of commercial vehicle |
| CN108545039B (en) * | 2018-04-11 | 2021-07-06 | 航天科技控股集团股份有限公司 | Automobile instrument CAN bus signal-based driving information automatic detection system and detection method |
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| CN201457085U (en) * | 2009-05-27 | 2010-05-12 | 欧科佳（上海）汽车电子设备有限公司 | CAN bus instrument assembly |
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