CN110376448A - A kind of ECU is shorted protective value test platform and method - Google Patents
A kind of ECU is shorted protective value test platform and method Download PDFInfo
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- CN110376448A CN110376448A CN201910479741.5A CN201910479741A CN110376448A CN 110376448 A CN110376448 A CN 110376448A CN 201910479741 A CN201910479741 A CN 201910479741A CN 110376448 A CN110376448 A CN 110376448A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention belongs to ECU short-circuit protection experimental rig technical fields, more particularly to a kind of ECU is shorted protective value test platform, simultaneously, the present invention also provides a kind of ECU to be shorted protective value test method, this platform includes abnormal short-circuiting means, state verification recording device, performance testing platform, when the present invention solves the prior art in the presence of the short-circuit protection performance for testing in test ECU, on the one hand the device that can manufacture abnormal Short-circuit Working Condition is needed, on the other hand the problem of needing the device that can test and record ECU functional status, the device of abnormal Short-circuit Working Condition can be manufactured with one side, on the other hand it can test and record the device and test simplicity of ECU functional status, the advantageous effects of high degree of automation.
Description
Technical field
The invention belongs to ECU short-circuit protection experimental rig technical fields more particularly to a kind of ECU to be shorted protective value test
Platform, meanwhile, the present invention also provides a kind of ECU to be shorted protective value test method.
Background technique
ECU short-circuit protection performance refers to that the signal wire of ECU and load circuit are shorted to power supply when abnormal conditions occur
It is shorted the functional status intensity of anomaly that when institute's presentation comes out over the ground, if functional status is absolutely not affected, it is believed that ECU
This performance it is best, the abnormal of ECU is shorted operating condition and has following two feature in real work: be shorted probability that operating condition occurs compared with
It is small, the defect of more difficult discovery this respect in product development；Unusual service condition is shorted once occur in actual operation, will cause compared with
For serious consequence.For two above feature, generally there is short circuit protective value in the Valuation Standard of electric and electronic product
Requirement, road vehicle electronic product higher for security level has tightened up requirement, so the needle in product development
The special test of this performance is particularly important, when there is the short-circuit protection performance for testing in test ECU in the prior art,
On the one hand the device that can manufacture abnormal Short-circuit Working Condition is needed, ECU function shape can be tested and record by the other hand needing
The problem of device of state.
Summary of the invention
The present invention provides a kind of ECU and is shorted protective value test platform and method, to solve to propose in above-mentioned background technique
When the prior art has the short-circuit protection performance for testing in test ECU, abnormal short-circuit work can be manufactured by the one hand needing
The device of condition, the problem of on the other hand needing the device that can test and record ECU functional status.
Technical problem solved by the invention is realized using following technical scheme: a kind of ECU short circuit protective value test
Platform, comprising:
Abnormal short-circuiting means: for manufacturing abnormal Short-circuit Working Condition, including manufacture when abnormal conditions occur, by ECU
Signal wire and load circuit power supply is shorted respectively and is over the ground shorted；
State verification recording device: different for testing and being recorded in the functional status that abnormal conditions generation when institute's presentation comes out
Chang Chengdu tests the traversal of MCU whole pin including in the case where manufacturing abnormal Short-circuit Working Condition, in traversal test process,
By acquiring the current value of various pieces in MCU respectively, host computer is sent by board by the current value of acquisition, host computer will
Received current value real-time display curent change waveform, and received current value data record is had access to backstage convenient for the later period；
Performance testing platform: if ECU functional status is absolutely not affected under abnormal Short-circuit Working Condition, it is determined that ECU is short
It is best to connect protective value.
Further, comprising:
By manufacturing abnormal Short-circuit Working Condition, tests and record ECU functional status；
If ECU functional status is absolutely not affected under abnormal Short-circuit Working Condition, it is determined that ECU is shorted protective value most
It is good.
Further, the abnormal Short-circuit Working Condition of the manufacture is included in manufacture when abnormal conditions occur, by the signal wire of ECU and
Load circuit is respectively shorted power supply and is shorted over the ground.
Further, described that the signal wire of ECU and load circuit are respectively shorted power supply and are shorted over the ground including host computer
The power supply when actuating of relay manufactures abnormal conditions generation is controlled by board to be shorted and be shorted over the ground.
Further, described to test and record ECU functional status including testing and being recorded in abnormal conditions generation when institute presentation
Functional status intensity of anomaly out.
Further, it is described test and be recorded in abnormal conditions occur when institute's presentation come out functional status intensity of anomaly include
In the case where manufacturing abnormal Short-circuit Working Condition, the traversal of MCU whole pin is tested, in traversal test process, by acquiring MCU respectively
The current value of middle various pieces sends host computer by board for the current value of acquisition, and host computer is real by received current value
When show curent change waveform, and received current value data record is had access to backstage convenient for the later period.
Further, the traversal test includes that all pin simulation Short-circuit Working Condition Overall Steps and replacement are shorted polarity
Until repeating whole pins.
Further, described that all pin simulation Short-circuit Working Condition Overall Steps are built into test equipment, company including being followed successively by
Functional status evaluation, simulation Short-circuit Working Condition, real time monitoring function state change, record before wiring beam, burning test program, test
Data.
Further, the observation item of the real time monitoring function state change includes current value, motor and solenoid valve sound, refers to
Show lamp, CAN communication, measuring wheel speed, wheel speed and speed output and other correlated observation items.
Further, it is described test and be recorded in abnormal conditions occur when institute's presentation come out functional status intensity of anomaly also wrap
It includes off-test final finishing and analyzes test data, second of repetition measurement is carried out for the place having a question in observation item, it is final to obtain
The short circuit protective value state of whole each pins out.
Advantageous effects:
It includes abnormal short-circuiting means, state verification recording device, performance testing platform that this patent, which uses, abnormal by manufacture
Short-circuit Working Condition is tested and records ECU functional status；If ECU functional status is absolutely not affected under abnormal Short-circuit Working Condition,
It determines that ECU short circuit protective value is best, controls the actuating of relay since host computer passes through board, realize time of MCU whole pin
Test is gone through, data record is had access to backstage convenient for the later period, present invention is generally directed to existing ECU to be shorted protective value test side
Method makes up its existing disadvantage, and meeting manpower, to rely on fast small, test speed, test favorable repeatability, test data record efficiency high
Integrality is good, actually uses the high test request of Work condition analogue degree, therefore, when testing in test the short-circuit protection performance of ECU,
On the one hand the device that abnormal Short-circuit Working Condition can be manufactured, on the other hand can test and record the device of ECU functional status.
Detailed description of the invention
Fig. 1 is the flow chart that a kind of ECU of the present invention is shorted protective value test method；
Fig. 2 is the specific flow chart that a kind of ECU of the present invention is shorted protective value test method；
Fig. 3 is that a kind of ECU of the present invention is shorted protective value test platform structural schematic diagram；
Fig. 4 is that a kind of ECU of the present invention is shorted each modular structure schematic diagram of protective value test platform.
Specific embodiment
The present invention is described further below in conjunction with attached drawing:
In figure:
S101- manufactures abnormal Short-circuit Working Condition；
S102- is tested and is recorded ECU functional status；
S201- manufacture is respectively shorted power supply when abnormal conditions occur, by the signal wire of ECU and load circuit and over the ground
It is shorted；
S202- tests the traversal of MCU whole pin in the case where manufacturing abnormal Short-circuit Working Condition；
S203- is in traversal test process, by the current value for acquiring various pieces in MCU respectively；
S204- sends host computer by board for the current value of acquisition；
S205- host computer is by received current value real-time display curent change waveform；
S206- simultaneously has access to received current value data record with backstage convenient for the later period；
If ECU functional status is absolutely not affected under S207- exception Short-circuit Working Condition；
It is best that S208- then determines that ECU is shorted protective value；
1- exception short-circuiting means, 2- state verification recording device, performance testing platform；
Embodiment:
The present embodiment: as shown in Figure 3,4, a kind of ECU short circuit protective value test platform, comprising:
Abnormal short-circuiting means 1: for manufacturing abnormal Short-circuit Working Condition S101, including manufacture when abnormal conditions occur,
The signal wire of ECU and load circuit are shorted to power supply respectively and are shorted S201 over the ground；
State verification recording device 2: the functional status that when institute's presentation comes out occurs for testing and being recorded in abnormal conditions
The traversal of MCU whole pin is tested S202, traversed by intensity of anomaly including in the case where manufacturing abnormal Short-circuit Working Condition S101
In test process, by acquiring the current value S203 of various pieces in MCU respectively, send the current value of acquisition to by board
Host computer S204, host computer is by received current value real-time display curent change waveform S205, and by received electric current Value Data
Record has access to S206 with backstage convenient for the later period；
Performance testing platform 3: if ECU functional status is absolutely not affected S207 under abnormal Short-circuit Working Condition, it is determined that
ECU is shorted the best S208 of protective value.
Due to manufacturing abnormal short-circuit work using including abnormal short-circuiting means, state verification recording device, performance testing platform
The signal wire of ECU and load circuit are respectively shorted power supply and short over the ground by condition including manufacture when abnormal conditions occur
It connects；It tests and is recorded in abnormal conditions and the functional status intensity of anomaly that when institute's presentation comes out occurs, including abnormal in manufacture
Under Short-circuit Working Condition, the traversal of MCU whole pin is tested, in traversal test process, by acquiring various pieces in MCU respectively
Current value, host computer is sent by board by the current value of acquisition, host computer is by received current value real-time display electric current
Change waveform, and received current value data record is had access to backstage convenient for the later period；If ECU function shape under abnormal Short-circuit Working Condition
State is absolutely not affected, it is determined that ECU short circuit protective value is best, therefore, tests in test the short-circuit protection of ECU
When energy, the device of abnormal Short-circuit Working Condition on the one hand can be manufactured, the dress of ECU functional status on the other hand can be tested and record
It sets.
As shown in Figure 1, simultaneously, the present invention also provides a kind of ECU to be shorted protective value test method, comprising:
By manufacturing abnormal Short-circuit Working Condition S101, tests and record ECU functional status S102；
If ECU functional status is absolutely not affected S207 under abnormal Short-circuit Working Condition, it is determined that ECU is shorted protective value
Best S208.
Due to testing and recording ECU functional status using by manufacturing abnormal Short-circuit Working Condition；If under abnormal Short-circuit Working Condition
ECU functional status is absolutely not affected, it is determined that ECU short circuit protective value is best, controls since host computer passes through board
The traversal test of MCU whole pin is realized in the actuating of relay, data record is had access to backstage convenient for the later period, the present invention is main
It is shorted protective value test method for existing ECU, makes up its existing disadvantage, meets manpower and relies on that small, test speed is fast, examination
Test favorable repeatability, test data record efficiency high integrality it is good, actual use the high test request of Work condition analogue degree, therefore,
When testing in test the short-circuit protection performance of ECU, the device of abnormal Short-circuit Working Condition on the one hand can be manufactured, on the other hand can
Test and record the device of ECU functional status.
As shown in Fig. 2, the manufacture exception Short-circuit Working Condition S101 is included in manufacture when abnormal conditions occur, by ECU's
Signal wire and load circuit are shorted to power supply respectively and are shorted S201 over the ground.
Described be respectively shorted the signal wire of ECU and load circuit power supply with short circuit over the ground includes that host computer passes through board
Power supply when control actuating of relay manufacture abnormal conditions occur is shorted and is shorted over the ground.
Due to being included in manufacture when abnormal conditions occur using the abnormal Short-circuit Working Condition of the manufacture, by the signal wire of ECU
Power supply is shorted respectively with load circuit and is shorted over the ground, it is described to be shorted the signal wire of ECU and load circuit to power supply respectively
Over the ground be shorted include host computer by board control the actuating of relay manufacture abnormal conditions occur when power supply be shorted with over the ground
It is shorted, since the signal wire of ECU when abnormal conditions occur and load circuit are being shorted to power supply and are being shorted over the ground when institute presentation
Therefore functional status intensity of anomaly out controls the actuating of relay by board by host computer, realizes MCU whole pin
Traversal test, acquire the size of current of various pieces in MCU respectively by current sensor, be sent to by board upper
The step of machine, specific test mainly has: functional status is commented before building test equipment, connection wiring harness, burning test program, test
Valence, simulation Short-circuit Working Condition, real time monitoring function state change, record data, the next pin of replacement simulate Short-circuit Working Condition.
It is described test and record ECU functional status S102 include test and be recorded in abnormal conditions occur when institute presentation come out
Functional status intensity of anomaly.
It is described test and be recorded in abnormal conditions occur when institute's presentation come out functional status intensity of anomaly be included in manufacture
Under abnormal Short-circuit Working Condition S101, the traversal of MCU whole pin is tested into S202, in traversal test process, by acquiring respectively
The current value S203 of various pieces in MCU sends host computer S204 by board for the current value of acquisition, and host computer will receive
Current value real-time display curent change waveform S205, and received current value data record and backstage were had access to convenient for the later period
S206。
It include testing and being recorded in abnormal conditions when institute presentation occurs by using the test and recording ECU functional status
Functional status intensity of anomaly out, the test are simultaneously recorded in the functional status exception that abnormal conditions generation when institute's presentation comes out
Degree is included under the abnormal Short-circuit Working Condition of manufacture, and the traversal of MCU whole pin is tested, in traversal test process, by dividing
Not Cai Ji in MCU various pieces current value, host computer is sent by board by the current value of acquisition, host computer will be received
Current value real-time display curent change waveform, and received current value data record is had access to backstage convenient for the later period, due to upper
Position machine real-time display curent change waveform, and data record is had access to backstage convenient for the later period, it is commented originally by indicator light flashing
The function of valence is replaced with the virtual indicator light in Labview host computer interface, and is provided simultaneously with what record in real time was had access to for the later period
Function uses the virtual window in Labview host computer interface originally by the speed and wheel speed waveform waveform of oscillograph observation
It shows, and is provided simultaneously with the function that record is had access to for the later period in real time, by the communication function for integrating two-way CAN on host computer
Can, while the functional status judgement of CAN0 and CAN1 is carried out, test efficiency is improved, outer watchdog function is added in test program man
Can, enable the working condition of host computer real-time monitoring MCU, captures and record automatically reseting now for the easy omission of artificial observation
As.
The traversal test includes that all pin simulation Short-circuit Working Condition Overall Steps and replacement are shorted polarity until weight
Multiple whole pin.
Due to including that all pin simulation Short-circuit Working Condition Overall Steps and replacement short circuit polarity are straight using test is traversed
To whole pins are repeated, since the signal wire and load circuit of ECU are being shorted to power supply and are being shorted and replace over the ground short circuit polarity,
It realizes and repeats to traverse whole pins.
It is described by all pin simulation Short-circuit Working Condition Overall Steps include be followed successively by build test equipment, connection wiring harness,
Functional status evaluation, simulation Short-circuit Working Condition, real time monitoring function state change, record data before burning test program, test.
The observation item of the real time monitoring function state change include current value, motor and solenoid valve sound, indicator light,
CAN communication, measuring wheel speed, wheel speed and speed output and other correlated observation items.
It is described test and be recorded in abnormal conditions occur when institute's presentation come out functional status intensity of anomaly further include test
Terminate final finishing and analyze test data, second of repetition measurement is carried out for the place having a question in observation item, finally obtains whole
The short circuit protective value state of each pin.
All pin simulation Short-circuit Working Condition Overall Steps are built into test equipment, company including being followed successively by since use is described
Functional status evaluation, simulation Short-circuit Working Condition, real time monitoring function state change, record before wiring beam, burning test program, test
Data, the observation item of the real time monitoring function state change include current value, motor and solenoid valve sound, indicator light, CAN logical
Letter, measuring wheel speed, wheel speed and speed output and other correlated observation items, the test are simultaneously recorded in abnormal conditions generation when institute
The functional status intensity of anomaly that presentation comes out further includes off-test final finishing and analyzes test data, doubtful for having in observation item
The place asked carries out second of repetition measurement, the short circuit protective value state of all each pins is finally obtained, due to the step of testing
Mainly have: building functional status evaluation, simulation Short-circuit Working Condition, reality before test equipment, connection wiring harness, burning test program, test
When monitoring function state change, record data, the next pin simulation Short-circuit Working Condition of replacement, repeat the first two steps until traversal
All pin, replacement are shorted polarity, repeat to traverse whole pins, and the observation item of functional test mainly includes current value, motor
With solenoid valve sound, indicator light, CAN communication, measuring wheel speed, wheel speed and speed output etc., off-test final finishing simultaneously analyzes examination
Data are tested, second of repetition measurement is carried out for the place having a question in data, finally obtains the short circuit protectiveness of all each pins
Energy.
This patent test condition is fixed, and is used without builds again every time, reduces the time for building platform consumption, test
Equipment and harness etc. are reliable high, build test condition every time and all do not need debugging a period of time, and it is good that test condition builds consistency,
The repeatability of test is improved, test observation scoring item is directly convenient, and artificial observation can all be taken into account simultaneously, test data
Integrality is good, test data record is easy, test efficiency is high, does not need to open ECU upper cover in experimental condition, can be utmostly
Simulation actually uses operating condition, traverses whole pins automatically in test, manually replacement is not shorted polarity, each pole of each pin
The all automatic continuous short circuit of property is small to the dependence of manpower.
There is two-way CAN communication in this patent test, improve test speed, by testing current, functional status meets
When, can further trouble spot judging, functional status evaluation in automatically reset failure manual identified omit probability it is low.
Working principle:
This patent passes through by manufacturing abnormal Short-circuit Working Condition, tests and records ECU functional status；If under abnormal Short-circuit Working Condition
ECU functional status is absolutely not affected, it is determined that ECU short circuit protective value is best, controls since host computer passes through board
The traversal test of MCU whole pin is realized in the actuating of relay, data record is had access to backstage convenient for the later period, the present invention is main
It is shorted protective value test method for existing ECU, makes up its existing disadvantage, meets manpower and relies on that small, test speed is fast, examination
Test favorable repeatability, test data record efficiency high integrality it is good, actual use the high test request of Work condition analogue degree, the present invention
When solving the prior art and there is the short-circuit protection performance for testing in test ECU, on the one hand need can manufacture it is abnormal short
The device of road operating condition, the problem of on the other hand needing the device that can test and record ECU functional status, have one side energy
Enough devices for manufacturing abnormal Short-circuit Working Condition, on the other hand can test and record ECU functional status device and test it is easy, from
The high advantageous effects of dynamicization degree.
Using technical solution of the present invention or those skilled in the art under the inspiration of technical solution of the present invention, design
Similar technical solution out, and reach above-mentioned technical effect, it is to fall into protection scope of the present invention.
Claims (10)
1. a kind of ECU is shorted protective value test platform characterized by comprising
Abnormal short-circuiting means: for manufacturing abnormal Short-circuit Working Condition, including manufacture when abnormal conditions occur, by the letter of ECU
Number line and load circuit are respectively shorted power supply and are shorted over the ground；
State verification recording device: the functional status exception journey that when institute's presentation comes out occurs for testing and being recorded in abnormal conditions
Degree tests the traversal of MCU whole pin including in the case where manufacturing abnormal Short-circuit Working Condition, in traversal test process, passes through
The current value for acquiring various pieces in MCU respectively sends host computer by board for the current value of acquisition, and host computer will receive
Current value real-time display curent change waveform, and received current value data record and backstage were had access to convenient for the later period；
Performance testing platform: if ECU functional status is absolutely not affected under abnormal Short-circuit Working Condition, it is determined that ECU, which is shorted, to be protected
It is best to protect performance.
2. a kind of ECU is shorted protective value test method characterized by comprising
By manufacturing abnormal Short-circuit Working Condition, tests and record ECU functional status；
If ECU functional status is absolutely not affected under abnormal Short-circuit Working Condition, it is determined that it is best that ECU is shorted protective value.
3. a kind of ECU according to claim 2 is shorted protective value test method, which is characterized in that the manufacture is abnormal
Short-circuit Working Condition is included in manufacture when abnormal conditions occur, and the signal wire of ECU and load circuit is respectively shorted power supply and right
Ground is shorted.
4. a kind of ECU according to claim 3 is shorted protective value test method, which is characterized in that the letter by ECU
It includes that by board to control actuating of relay manufacture different for host computer that number line and load circuit are shorted power supply and are shorted over the ground respectively
Power supply when often happening is shorted and is shorted over the ground.
5. a kind of ECU according to claim 2 is shorted protective value test method, which is characterized in that the test is simultaneously remembered
Record ECU functional status includes testing and being recorded in abnormal conditions the functional status intensity of anomaly that when institute's presentation comes out occurs.
6. a kind of ECU according to claim 5 is shorted protective value test method, which is characterized in that the test is simultaneously remembered
It records in the case where the functional status intensity of anomaly that abnormal conditions generation when institute's presentation comes out is included in the abnormal Short-circuit Working Condition of manufacture, by MCU
The traversal of whole pins is tested, and in traversal test process, by acquiring the current value of various pieces in MCU respectively, will be acquired
Current value host computer is sent to by board, host computer will connect received current value real-time display curent change waveform
The current value data record of receipts is had access to backstage convenient for the later period.
7. a kind of ECU according to claim 6 is shorted protective value test method, which is characterized in that the traversal test
Including all pin simulation Short-circuit Working Condition Overall Steps and replacement are shorted polarity until repeating whole pins.
8. a kind of ECU according to claim 7 is shorted protective value test method, which is characterized in that it is described will be all
Pin simulation Short-circuit Working Condition Overall Steps include be followed successively by build test equipment, connection wiring harness, burning test program, test before function
It can state evaluation, simulation Short-circuit Working Condition, real time monitoring function state change, record data.
9. a kind of ECU according to claim 8 is shorted protective value test method, which is characterized in that the real-time monitoring
The observation item of functional status variation includes current value, motor and solenoid valve sound, indicator light, CAN communication, measuring wheel speed, wheel speed
With speed output and other correlated observation items.
10. a kind of ECU according to claim 6 is shorted protective value test method, which is characterized in that the test is simultaneously remembered
It records and further includes off-test final finishing and analyze test in the functional status intensity of anomaly that abnormal conditions generation when institute's presentation comes out
Data carry out second of repetition measurement for the place having a question in observation item, finally obtain the short circuit protectiveness of all each pins
It can state.
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| JP3735380B2 (en) * | 1992-08-24 | 2006-01-18 | 富士通テン株式会社 | Electronically controlled fuel injection device |
| KR20140057875A (en) * | 2012-11-05 | 2014-05-14 | 콘티넨탈 오토모티브 시스템 주식회사 | Circuit for detecting scb |
| CN109240277A (en) * | 2018-11-13 | 2019-01-18 | 重庆长安汽车股份有限公司 | Control system diagnostic function real steering vectors automate platform and test method |
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Application publication date: 20191025 |