CN108762243A - A kind of ECU functional tests platform and ECU function test methods - Google Patents
A kind of ECU functional tests platform and ECU function test methods Download PDFInfo
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- CN108762243A CN108762243A CN201810726999.6A CN201810726999A CN108762243A CN 108762243 A CN108762243 A CN 108762243A CN 201810726999 A CN201810726999 A CN 201810726999A CN 108762243 A CN108762243 A CN 108762243A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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Abstract
The present invention provides a kind of ECU functional tests platforms, belong to electronic system technology field.A kind of ECU functional tests platform provided in an embodiment of the present invention, including：Host computer and hardware system are provided with CAN communication module on the hardware system, and the CAN communication module is connected by USB interface with the host computer；The host computer is used to record the current responsive state of each function module of the hardware system, displaying and preservation testing result data in real time.The requirement that objective interface can be met reduces cost, realizes that detection of platform data class increases and data volume is promoted.
Description
Technical field
The present invention relates to ECU (Electronic Control Unit, electronic control unit) to test systems technology field,
In particular to a kind of ECU functional tests platform.
Background technology
ESC system (Electronic Stability Control, automobile electron stabilization control system) is mainly by hydraulic pressure
Execution unit, electronic control unit and sensor composition.The vehicle-mounted computer and ECU is otherwise known as is one using microcontroller as core
Micro-system, by compositions such as central processing unit, I/O (Input/Output, input/output port) equipment, memories, according to each
The information of sensor input carries out operation, processing, judgement, then exports the electric impulse signal of one fixed width to realize to each execution
Mechanism accurately controls, the whether reliable and stable normal operation for directly influencing automobile electric control system of function.In general, vapour
The features such as vehicle electric control system ECU has board area small, and input/output signal is complicated, and number of channels is mostly high with performance requirement, institute
With welding when have there may be rosin joint, short circuit the problems such as, cause a series of failures, as solenoid valve failure, sensor fault,
Power abnormal etc., basic functional verification how is carried out to it after ECU is designed and the reliability demonstration in later stage is closed
It is to the reliable and secure of entire product.
Automotive engine control unit ECU is the core component of Modern New automobile, at this stage to the inspection of ECU output signals
Major part is surveyed using special automatically controlled detecting instrument, expensive, interface is not intuitive enough.General automatically controlled detecting instrument uses liquid crystal
Display module, what is had can not view the situation of change of multi-parameter simultaneously；Detection parameters are limited, cannot be further added by detection in the future
Mesh does not adapt to the development of the following ECU.The scope of application of some automatically controlled detecting instruments is also very limited at this stage.It is different types of
ECU often requires to use different instrument and equipments.More it is essential that detection is a basic link of ECU exploitation and repair,
It also needs to connect competence exertion effect with other links, such as emulation, parameters revision.Existing automatically controlled detecting instrument itself
Other functions are cannot achieve, only relies on and detection data is transmitted on PC (Personal Computer, PC) again,
It could complete and the contact of other links.
Invention content
For the above-mentioned prior art the problem of, the present invention provides a kind of ECU functional tests platforms, can meet
The requirement of objective interface reduces cost, realizes that detection of platform data class increases and data volume is promoted.
In a first aspect, an embodiment of the present invention provides a kind of ECU functional tests platforms, including：Host computer and hardware system,
CAN (Controller Area Network, controller local area network) communication module is provided on the hardware system, it is described
CAN communication module is connected by USB (Universal Serial Bus, universal serial bus) interface with the host computer；
The host computer is used to record the current responsive state of each function module of the hardware system, displaying and preservation detection knot in real time
Fruit data.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
It includes power supply signal detection module, analog signal generation module, digital signal generation module, collection of simulant signal to state hardware system
Module and CAN communication module are connected using signal wire between each function module.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides the first of first aspect
The first possible embodiment of possible embodiment, wherein the analog signal generation module is directed to different type
ECU generate different analog signals, and the analog signal of generation input ECU is tested；The digital signal generates mould
Block generates different digital signals for testing and surveying the digital signal of generation input ECU for different types of ECU
Examination.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides the first of first aspect
Second of possible embodiment of possible embodiment, wherein the collection of simulant signal module includes switching signal
Test module, analog signal test module, wheel speed signal test module and combination sensor test module, between each test module
It is connected using signal wire, the input/output signal of different electronic components is acquired, the host computer is by collection result and joins
Value comparison is examined to judge the validity of input/output signal.
Second of possible embodiment of the possible embodiment of with reference to first aspect the first, the embodiment of the present invention
Provide the first possible implementation of second of possible embodiment of the first possible embodiment of first aspect
Mode, wherein the combination sensor test module is for testing the combination sensor in the ECU, to described group
The test that sensor carries out is closed to include at least to the acceleration signal of the combination sensor, gyroscope signal and temperature signal
Test.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect wherein, institute
It includes testboard pedestal, data collecting card, CAN cards and deconcentrator to state hardware system；The testboard pedestal is to be measured for connecting
The ECU of examination and the data collecting card；The data collecting card is used to acquire the collection result of the collection of simulant signal module,
And the collection result is sent to the host computer, result is preserved by the host computer.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein institute
It includes CAN cards to state CAN communication module, and the host computer is connected by USB interface with the CAN cards.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein institute
The host computer stated is the PC machine for being equipped with inspection software.
The possible embodiment of any one of the above with reference to first aspect, an embodiment of the present invention provides first aspects
5th kind of possible embodiment, wherein the test platform is based on LabVIEW (Laboratory Virtual
Instrument Engineering Workbench, laboratory virtual instrument engineering platform) software platform and data acquisition it is hard
Part platform is established.
Second aspect, the embodiment of the present invention also provide a kind of ECU function test methods, the method includes：It obtains and places
In the detection information of the ECU on the testboard pedestal of hardware system；If the platform of the detection information and storage that obtain is pre-
Test information is consistent, and test program is written into ECU and is tested for the host computer；Pass through hardware between host computer and ECU
System carries out CAN communication and is acquired with data, and after the success of testing results program, host computer real-time display simultaneously preserves test result.
The embodiment of the present invention brings following advantageous effect：
The embodiment of the present invention provides ECU functional test platforms, by the way that ECU to be detected is placed on testboard pedestal,
When the detection information that camera barcode scanning obtains predicts that test information is consistent with platform, host computer gives ECU burning test programs, upper
CAN communication is carried out by CAN communication module between machine and ECU, after testing results success, host computer real-time display simultaneously preserves test
As a result.To not intuitive, expensive, the limited technical problem of detection parameters that solves existing ECU test system median surface.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
The test platform Organization Chart that Fig. 1 is provided by the embodiment of the present invention；
The module testing flow chart that Fig. 2 is provided by the embodiment of the present invention；
The hardware architecture diagram that Fig. 3 is provided by the embodiment of the present invention；
The software flow pattern that Fig. 4 is provided by the embodiment of the present invention.
Icon：1-PC machines；2- air pressure valves；3- cameras；4- testboard pedestals；The 5- platform spaces of a whole page；The bottoms 6- lower module.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be matched with a variety of different
It sets to arrange and design.Therefore, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the present invention.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to the present invention
The range of protection.
Not intuitive for existing interface, with high costs, the limited technical problem of detection parameters, the embodiment of the present invention provides
A kind of ECU functional tests platform.
Embodiment one
An embodiment of the present invention provides a kind of ECU functional tests platform, Fig. 1 shows ECU provided in an embodiment of the present invention
Test platform Organization Chart.As shown in Figure 1, the ECU test platforms include host computer and hardware system, the hardware system is provided with
CAN communication module, the CAN communication module are connected by USB interface with the host computer；The host computer for remembering in real time
Record the current responsive state of each function module of the hardware system, displaying and preservation testing result data.
The host computer includes a PC machine, is equipped with inspection software.The host computer is logical with the CAN communication module
USB is crossed to be connected.
The hardware system includes power supply signal detection module, analog signal generation module, digital signal generation module, mould
Intend signal acquisition module and CAN communication module, is connected using signal wire between each function module.Analog signal generation module is directed to
Different types of ECU generates different analog signals, and the analog signal of generation input ECU is tested；Digital signal is produced
Raw module for different types of ECU generate different digital signals for test and by the digital signal of generation input ECU into
Row test.
Fig. 3 shows the hardware architecture diagram of the embodiment of the present invention, and PC machine 1, air pressure valve 2, camera shooting are placed on the platform space of a whole page 5
First 3 and testboard pedestal 4, bottom lower module 6 is placed under the platform space of a whole page 5.Bottom lower module 6 includes CAN cards, data
Capture card etc..PC machine 1 is connected by the CAN cards in USB interface and bottom lower module 6, and testboard pedestal 4 is to be measured for connecting
The ECU and data collecting card of examination.
Fig. 2 shows the module testing flow charts of the embodiment of the present invention.It is powered detection first, 12V/24V power supplies make
Can, the output of 5V pins is connected to AD boards, and whether test output voltage meets 5V ± 2%, and if satisfaction, then output voltage is normal,
Into next test item, otherwise failure.The Quick Response Code of the camera scan round ECU spaces of a whole page, detection information are tested with platform prediction
Whether information is consistent, unanimously then pattern match success, into next test item.Otherwise barcode scanning is recycled, is more than preset time
Without as a result, then failure.Serial Port Line connects ECU by Memtool softwares, guides burning program test, successful connection, program
Burning is normal, and serial ports test is normal, into next test item, otherwise failure.USBCAN boxes are connected, are carried out by CANDOG softwares
Connection and test code injection, normal connection and burning, illustrate that CAN communication is normal, into next test item, otherwise failure.
Collection of simulant signal module includes at least switching signal test module, analog signal test module, wheel speed signal and surveys
Die trial block, combination sensor test module, are acquired different signals, and collection result and reference value are compared by host computer
Judge the validity of output signal.
Input signal test and output signal test are divided into switching signal test module.In input signal test, accordingly
Pin accesses I/O boards, and by I/O board input switch signals, ECU detections pin level issues host computer by CAN, upper
Machine judges whether signal is consistent, carries out signal and shows.In output signal test, respective pins access I/O boards, in ECU receiving
Position machine instruction, control relevant pins are set height or are set low, and acquire pin level by I/O boards, whether host computer judges signal
Unanimously, signal is carried out to show.
The input signal of analog signal test module is tested, respective pins are connected to AD boards, host computer input
2.5V voltages, ECU detect respective pins voltage value, host computer are sent to by CAN, and host computer judges whether signal is consistent, into
Row signal condition is shown.
In wheel speed signal test module, it is contemplated that the compatibility of later stage different sensors, using installing motor and gear ring additional,
Acquire the actual wheel speed sensors signal in 4 tunnels.
In motor drives test module, motor, host computer is replaced to send test instruction using power resistor, whether ECU
Motor work is controlled, by transmission motor job failure code and motor both end voltage Vgs_pd (grid of motor high side switches and source
Voltage between pole) determine whether motor is working properly.
In solenoid-driven test module, it is divided into flash test and is tested with low side.Solenoid valve is replaced using power resistor, on
Position machine sends flash test instruction, and the work of ECU control flash, low side do not work, and test load both end voltage judges according to interpolation
Whether flash is normal；Host computer sends the test instruction of low side, and ECU control high-low sides work at the same time, test load both end voltage with
And error code determines whether solenoid valve works normally.
Rigid line exports in test module, and respective pins are connected to AD boards, and host computer sends test instruction, and ECU controls phase
Port is answered to set height or set low, it is true after progress logical comparison by the voltage value of AD boards acquisition respective pins after voltage division processing
Surely whether showing failure；Output frequency is captured with counter, whether comparison shows failure.
The combination sensor test module includes at least the acceleration signal, gyroscope signal and temperature to combination sensor
The test of signal is spent, acceleration signal includes longitudinal acceleration and side acceleration.Host computer sends test instruction, and ECU passes through
CAN sends corresponding sensor information, and the signal of host computer normal acquisition is mainly：X/Y acceleration is 0g；Z axis acceleration is
+/-g；Gyroscope signal is 0；Temperature is room temperature.
Fig. 3 shows the hardware architecture diagram of the embodiment of the present invention.As shown in Figure 1, the test platform is three-Tier Model,
Host computer, hardware system and testboard pedestal 4.The namely host computer of PC machine 1, test software programs are all in PC machine 1.Hardware system
System at least air pressure valve 2, camera 3, bottom lower module 6.Wherein, bottom lower module 6 includes at least data collecting card, CAN
Card, deconcentrator etc..
The test platform is based on LabVIEW software platforms and data acquisition hardware platform is established.LabVIEW itself includes
Bottom data communication control, keeps the process for writing application software greatly simplified, along with LabVIEW supports PC and USB interface
Communication, thus can it is high using transmission rate at LabVIEW, support hot-swappable USB interface to carry out data acquisition.To
Reach objective interface, reduce cost, and can guarantee the purpose with certain versatility and portability.
Fig. 4 shows the software flow pattern of the embodiment of the present invention.ECU to be tested is placed on testboard pedestal, point
Hit the testing button of host computer.Camera is started to work, the Quick Response Code of the scan round ECU spaces of a whole page, and detection information is predicted with platform
When information is consistent, electric cylinder is started to work, and compresses ECU.ECU power supply modules are formed into a loop, data collecting card collection voltages number
According to, if meet 5V power supplies, next step detection is carried out if satisfaction.Host computer sends to optical coupled switch and instructs, and host computer is to ECU
Burning test program is located at the microcontroller inside ECU and feeds back the successful signal of a burning to host computer.Testing results program is surveyed
After the completion of examination, each function module test result of host computer real-time display preserves test result.
Embodiment two
On the basis of the above embodiments, the embodiment of the present invention provides a kind of ECU function test methods, the method packet
It includes, obtains the detection information for being positioned over the ECU on the testboard pedestal of hardware system；If obtain the detection information with deposit
The platform prediction test information of storage is consistent, and test program is written into ECU and is tested for the host computer；Host computer and ECU it
Between CAN communication carried out by CAN communication module, in addition CAN communication may be implemented data acquisition function, the success of testing results program
Afterwards, host computer real-time display and test result is preserved.The used ECU functional tests platform of the embodiment of the present invention, including host computer
And hardware system, specific implementation can be found in embodiment of the method, details are not described herein.
In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase
To importance.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of ECU functional tests platform, which is characterized in that including：Host computer and hardware system are arranged on the hardware system
There are CAN communication module, the CAN communication module to be connected with the host computer by USB interface；The host computer is for real-time
Record the current responsive state of each function module of the hardware system, displaying and preservation testing result data.
2. ECU functional tests platform according to claim 1, which is characterized in that the function module of the hardware system includes
Power supply signal detection module, analog signal generation module, digital signal generation module, collection of simulant signal module and CAN communication
Module is connected using signal wire between each function module.
3. ECU functional tests platform according to claim 2, which is characterized in that the analog signal generation module is not for
The ECU of same type generates different analog signals, and the analog signal of generation input ECU is tested；The digital signal
Generation module generates different digital signals for testing and the digital signal of generation being inputted ECU for different types of ECU
It is tested.
4. ECU functional tests platform according to claim 2, which is characterized in that the collection of simulant signal module includes opening
OFF signal test module, analog signal test module, wheel speed signal test module and combination sensor test module, respectively test mould
It is connected using signal wire between block, the input/output signal of different electronic components is acquired, the host computer ties acquisition
Fruit compares to judge the validity of input/output signal with reference value.
5. ECU functional tests platform according to claim 4, which is characterized in that the combination sensor test module is used for
Combination sensor in the ECU is tested, the test that the combination sensor carries out is included at least to the combination
The test of the acceleration signal, gyroscope signal and temperature signal of sensor.
6. ECU functional tests platform according to claim 1, which is characterized in that the hardware system include testboard pedestal,
Data collecting card, CAN cards and deconcentrator；
The testboard pedestal is for connecting ECU to be tested and the data collecting card；
The data collecting card is used to acquire the collection result of the collection of simulant signal module, and the collection result is sent
To the host computer, result is preserved by the host computer.
7. ECU functional tests platform according to claim 1, which is characterized in that the CAN communication module includes CAN cards, institute
Host computer is stated by USB interface to be connected with the CAN cards.
8. ECU functional tests platform according to claim 1, which is characterized in that the host computer is soft to be equipped with detection
The PC machine of part.
9. according to a kind of any ECU functional tests platform of claim 1~8, which is characterized in that the test platform base
It is established in LabVIEW software platforms and data acquisition hardware platform.
10. a kind of ECU function test methods, which is characterized in that be applied to ECU functions according to any one of claims 1 to 9
Test platform；The method includes：
Obtain the detection information for being positioned over the ECU on the testboard pedestal of hardware system；
If the detection information obtained is consistent with the platform of storage prediction test information, the host computer is written into ECU
Test program is tested；
CAN communication is carried out by CAN communication module between host computer and ECU, after the success of testing results program, host computer is shown in real time
Show and preserves test result.
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| CN109747569A (en) * | 2019-01-25 | 2019-05-14 | 深圳市元征科技股份有限公司 | A kind of ECU harness control method, system, equipment and computer readable storage medium |
| CN110375934A (en) * | 2019-06-05 | 2019-10-25 | 天津英创汇智汽车技术有限公司 | A kind of equipment for ECU air-leakage test |
| CN110673584A (en) * | 2019-10-14 | 2020-01-10 | 上海拿森汽车电子有限公司 | Reliability detection method and device for electric power-assisted brake system |
| CN111258291A (en) * | 2018-12-03 | 2020-06-09 | 苏州迪飞达科技股份有限公司 | Method for checking acceptance based on controller performance detection |
| CN111308919A (en) * | 2018-12-12 | 2020-06-19 | 广州汽车集团股份有限公司 | Wheel speed signal transmission method, device, terminal and computer readable storage medium |
| CN113638813A (en) * | 2021-08-10 | 2021-11-12 | 武汉理工大学 | Detection device and method for automobile ECU recycled part |
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| CN113638813A (en) * | 2021-08-10 | 2021-11-12 | 武汉理工大学 | Detection device and method for automobile ECU recycled part |
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