CN106843197A - The fault self-diagnosis system and method for a kind of electric-control system - Google Patents
The fault self-diagnosis system and method for a kind of electric-control system Download PDFInfo
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- CN106843197A CN106843197A CN201710212832.3A CN201710212832A CN106843197A CN 106843197 A CN106843197 A CN 106843197A CN 201710212832 A CN201710212832 A CN 201710212832A CN 106843197 A CN106843197 A CN 106843197A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 6
- 230000007257 malfunction Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000013024 troubleshooting Methods 0.000 abstract description 4
- 230000006870 function Effects 0.000 abstract description 2
- 238000011835 investigation Methods 0.000 abstract description 2
- 238000011897 real-time detection Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 244000144983 clutch Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Of Engines (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The present invention relates to the fault self-diagnosis system and method for a kind of electric-control system, belong to automotive fault self-diagnostic system and method.Module is removed including Fault Identification module, fault processing module, failure prompting module, DTC memory module and DTC；The fault message of each component in real-time detection automatic clutch system, the particular location that failure judgement occurs, and remind driver that the system breaks down, fault message is stored in case for maintenance personal provides guidance simultaneously, the particular location broken down so as to facilitate maintenance personal to quickly find, changes the part for damaging.The advantage is that：It is different from traditional artificial troubleshooting, it is that the function and failure with diagnostic system component are detected using electronically, can produce accurate fault message, and failure is carried out quickly and accurately to position, trouble shooting time is reduced, and substantially increases the efficiency of investigation failure.
Description
Technical field
The present invention relates to a kind of automotive fault self-diagnostic system and method, it is particularly suited for the automatically controlled system of automatic clutch for car
System.
Background technology
Start with the rapid growth of world car owning amount, among automobile extensively using electron controls technology, one side
The economy and dynamic property of Hyundai Motor are substantially increased, on the other hand also causes that automobile overall structure is more complicated, increased
Automobile failure diagnosis and the difficulty of maintenance.Traditional artificial experience detection is only relied at present to be difficult in adapt to diagnosis, no matter is being examined
Convenience that disconnected accuracy is still used and the demand that can not all meet client in operating efficiency.
Clutch system belongs to an important assembly of car transmissions, so its fault diagnosis is to vehicle safety
It is significant with reliability.Automatic clutch for car, also referred to as automatic clutch control system, are directed to manual car
A kind of Intelligent clutch control system of type research and development.On the basis of former car gearbox and clutch is not changed, just with certainly
Dynamic operating mechanism liberates the left foot of driver, removes clutch pedal, and the separation and combination of clutch are controlled by ECU, from
And reach the effect of " driving without stepping on clutch ".Therefore, how accurately, quickly, scientifically diagnose vehicle failure, so as in time refer to
Lead auto repair, guarantee driving safety, it has also become a current automobile industry problem urgently to be resolved hurrily.In order to find and arrange in time
Except failure, it is necessary to which the fault diagnosis to automobile electric control system is constantly researched and developed.
The content of the invention
The present invention provides the fault self-diagnosis system and method for a kind of electric-control system, to solve the standard of the diagnosis that presently, there are
The problem that true property, the convenience for using and operating efficiency can not meet customer need.
The present invention is adopted the technical scheme that：
Mould is removed including Fault Identification module, fault processing module, failure prompting module, DTC memory module and DTC
Block；
The signal condition of each component in the Fault Identification module detecting system, and real-time judge each signal whether occur it is different
Often；
Fault processing module automatically processes the failure of the normal operation of influence electric-control system, and the signal is substituted with fixed value；
It is abnormal that failure prompting module reminds driver's electric-control system to occur by buzzer or instrument board；
DTC memory module stores DTC in electricity erasable memorizer EEPROM；
DTC removes module in after removal of faults on system, removes failure code.
A kind of electric-controlled system fault self-diagnosing method, including：
（1）Fault Identification module recognizes failure and confirms, sets just failure judgement position and final fault bit, is worth for 1 representative has
Failure, 0 represents fault-free, and failure is just confirmed when only final fault bit is 1, and CCU first reads the fault value preserved before power-off,
If fault-free, two fault bits are all 0；Conversely, being all 1, then whether complete monitoring failure occurs, and during fault-free, just judges
Fault bit is 0, and after keeping unfaulty conditions 100ms, final fault bit is also 0；When faulty, just failure judgement position is 1, is protected
After holding malfunction 100ms, final fault bit is 1, confirms failure, records DTC；
（2）The failure is transported to fault processing module and failure prompting module, wherein：
Fault handling method, system under test (SUT) has three temperature sensors, and sample respectively pcb board temperature, motor temperature and H bridges drive
Chip temperature, when any one temperature goes wrong, that is, recognizes temperature failure high or the low failure of temperature, and all being replaced with 0 should
Temperature value；When clutch position goes wrong, replace clutch position sampled value using 24000, it is believed that clutch has been in
Fully separating state；
Failure based reminding method, defines two and collects 1 and failure collection 2 without the bit variable failure of symbol 32, each in the two variables
Position all represents a kind of failure, and DTC is transported to 3 modules, and one is the ACS on the CAN message controller dial plate by specific ID
Trouble light, when there is any failure to occur, trouble light is lighted, conversely, extinguishing；Two is the CAN that DTC is passed through into self-defined ID
Message is sent in CAN；Three is to control the buzzer on car, and when there is any failure to occur, buzzer is just with 100ms weeks
Phase ring is gone wrong with pointing out driver's ACS systems；
（3）Encoded and stored into DTC memory module, when DTC is recognized, be temporarily stored in the code at random by CCU
In access memory RAM, once ignition switch is closed, the data are just saved in electricity erasable memorizer EEPROM；
（4）Module is removed by DTC to be purged, each independent DTC can be removed by three kinds of modes, mode
One：Just for the removing enable bit of single DTC, that is to say, that when the enable bit is effective, corresponding DTC can only be removed；
Mode two：For the removing of all DTCs, when the enable bit is effective, all DTCs can be simultaneously removed；Mode three：Pass through
The CAN message of self-defined ID is removed, and which is also while removing all DTCs；Wherein mode one and two is applied to demarcation work
Cheng Shi removes DTC online, and mode three is not only suitable for calibration engineer and is also applied for maintenance personal, and maintenance personal can pass through
Diagnostic equipment is disposable all to remove totally DTC.
The invention has the advantages that：Traditional artificial troubleshooting is different from, it is to be detected using electronically and diagnostic system
The function and failure of component, can produce accurate fault message, and failure is carried out quickly and accurately to position, and reduce failure
The lookup time, and substantially increase the efficiency of investigation failure.
Brief description of the drawings
Fig. 1 is the schematic diagram of fault self-diagnosis system of the present invention；
Fig. 2 is system under test (SUT) automatic clutch system schematic；
Fig. 3 is the schematic diagram of Fault Identification failure of the present invention；
Fig. 4 is the schematic diagram of troubleshooting of the present invention；
Fig. 5 is the schematic diagram that failure of the present invention is reminded；
Fig. 6 is the schematic diagram of present invention storage DTC；
Fig. 7 is the schematic diagram that the present invention removes DTC.
Specific embodiment
It is clear including Fault Identification module, fault processing module, failure prompting module, DTC memory module and DTC
Except module；
The signal condition of each component in the Fault Identification module detecting system, and real-time judge each signal whether occur it is different
Often；
Fault processing module automatically processes the failure of the normal operation of influence electric-control system, and the signal is substituted with fixed value；With
Ensure that whole system can be continued to run with down, while be also convenient for calibration engineer to be easy to find the fault-signal；
It is abnormal that failure prompting module reminds driver's electric-control system to occur by buzzer or instrument board；
DTC memory module stores DTC in electricity erasable memorizer EEPROM；For each failure for detecting is set only
One DTC, when the ignition switch is turned off, all DTCs are all saved in the EEPROM of ECU（Electric erasable is stored
Device）In, facilitate calibration engineer or maintenance personal to be checked, while when going up electricity again for ECU failure confirmation；
DTC removes module in after removal of faults on system, removes failure code, electric-control system is normally run, and removes event
Barrier code has two ways, and one is that, by specified calibrating parameters amount, one is instructed by CAN, and mode one is more suitable for demarcating engineering
Teacher, mode two is more suitable for diagnostic equipment operation, no matter which kind of mode, disposably can all remove all of DTC.
A kind of electric-controlled system fault self-diagnosing method, including：
（1）Fault Identification module recognizes failure and confirms, sets just failure judgement position and final fault bit, is worth for 1 representative has
Failure, 0 represents fault-free, and failure is just confirmed when only final fault bit is 1, and CCU first reads the fault value preserved before power-off,
If fault-free, two fault bits are all 0；Conversely, being all 1, then whether complete monitoring failure occurs, and during fault-free, just judges
Fault bit is 0, and after keeping unfaulty conditions 100ms, final fault bit is also 0；When faulty, just failure judgement position is 1, is protected
After holding malfunction 100ms, final fault bit is 1, confirms failure, records DTC；
（2）The failure is transported to fault processing module and failure prompting module, wherein：
Fault handling method, system under test (SUT) has three temperature sensors, and sample respectively pcb board temperature, motor temperature and H bridges drive
Chip temperature, when any one temperature goes wrong, that is, recognizes temperature failure high or the low failure of temperature, and all being replaced with 0 should
Temperature value；When clutch position goes wrong, replace clutch position sampled value using 24000, it is believed that clutch has been in
Fully separating state；
Failure based reminding method, defines two and collects 1 and failure collection 2 without the bit variable failure of symbol 32, each in the two variables
Position all represents a kind of failure, and DTC is transported to 3 modules, and one is the ACS on the CAN message controller dial plate by specific ID
Trouble light, when there is any failure to occur, trouble light is lighted, conversely, extinguishing；Two is the CAN that DTC is passed through into self-defined ID
Message is sent in CAN；Three is to control the buzzer on car, and when there is any failure to occur, buzzer is just with 100ms weeks
Phase ring is gone wrong with pointing out driver's ACS systems；
（3）Encoded and stored into DTC memory module, when DTC is recognized, be temporarily stored in the code at random by CCU
In access memory RAM, once ignition switch is closed, the data are just saved in electricity erasable memorizer EEPROM；
（4）Module is removed by DTC to be purged, each independent DTC can be removed by three kinds of modes, mode
One：Just for the removing enable bit of single DTC, that is to say, that when the enable bit is effective, corresponding DTC can only be removed；
Mode two：For the removing of all DTCs, when the enable bit is effective, all DTCs can be simultaneously removed；Mode three：Pass through
The CAN message of self-defined ID is removed, and which is also while removing all DTCs；Wherein mode one and two is applied to demarcation work
Cheng Shi removes DTC online, and mode three is not only suitable for calibration engineer and is also applied for maintenance personal, and maintenance personal can pass through
Diagnostic equipment is disposable all to remove totally DTC.
With reference to accompanying drawing, the invention will be further described by taking automatic clutch system as an example below.
As shown in figure 1, after the system identification to failure and confirmation, the failure is transported to fault processing module, and
Send and remind malfunctioning module, while can also be encoded and be stored into DTC memory module, removed finally by DTC
Module is purged.
As shown in Fig. 2 automatic clutch system is by motor, ECU（CCU）, operating mechanism, clutch position sensing
Device, gear shift are intended to the composition such as sensor, gear position sensor, wheel cylinder, clutch, oil pipe, wire harness.Wherein gear position sensor is by gear selecting
Position sensor and shift pattern sensor group into.CCU reads engine speed, accelerator pedal signal, starts by CAN
Machine torque signal, GES, brake signal obtain travel condition of vehicle；Then sensor, gear selecting position are intended to by gear shift
Sensor, shift pattern sensor identification gear shift request information are put, driving clutch operating mechanism is rapidly separated clutch；Finally
By choosing, shift pattern sensor, identify whether to reach target gear, if reached, CCU driving clutchs operating mechanism is combined
Clutch, closed-loop control is carried out to combining speed and binding site.
As shown in figure 3, the DTC identification of all signals is all identical principle in system under test (SUT), for convenience of confirmation event
Barrier, two variables of setting, respectively first failure judgement position and final fault bit.It is worth for 1 represents faulty, 0 represents fault-free.Only
Just confirmation failure when to have final fault bit be 1, the purpose for doing so is to leach interference by software, in order to avoid misidentification failure.First
CCU reads the fault value preserved before power-off, if fault-free, two fault bits are all 0；Conversely, being all 1.Then complete monitoring event
Whether barrier occurs, and during fault-free, just failure judgement position is 0, and after keeping unfaulty conditions 100ms, final fault bit is also 0；When
When faulty, just failure judgement is 1, and after maintaining malfunction 100ms, final fault bit is 1, confirms failure, record event
Barrier code.
As shown in figure 4, the present invention is only processed important fault-signal, among these including temperature and clutch position
Put, ACS systems there are three temperature sensors, sample respectively pcb board temperature, motor temperature and H bridge driving chip temperature, when any
One temperature goes wrong, i.e., fault self-diagnosis system recognizes temperature failure high or the low failure of temperature, all replaces the temperature with 0
Angle value；When clutch position goes wrong, clutch position sampled value is replaced using 24000, it is believed that clutch is in complete
Released state.These substitution values can ensure the operation that ACS systems still can be safe under nonserviceabling.
As shown in figure 5, because system under test (SUT) failure is a lot, so defining two without the bit variable of symbol 32：Failure collects 1 and event
Barrier collects 2, and each all represents a kind of failure in the two variables.DTC is transported to 3 modules.One is by specific ID
ACS trouble lights on CAN message controller dial plate, when there is any failure to occur, trouble light is lighted, conversely, extinguishing；Two be by
DTC is sent in CAN by the CAN message of self-defined ID, facilitates calibration engineer or maintenance personal's diagnostic equipment
Checked；Three is to control the buzzer on car, and when there is any failure to occur, buzzer is just with 100ms cycles ring carrying
Show that driver's ACS systems go wrong.
As shown in fig. 6, when DTC is recognized, the code is temporarily stored in RAM by CCU（Random access memory）In, once
Ignition switch is closed, and the data are just saved in EEPROM（Electricity erasable memorizer）In.
As shown in fig. 7, each independent DTC can be removed by three kinds of modes.Mode one：Just for single event
Hinder the removing enable bit of code, that is to say, that when the enable bit is effective, corresponding DTC can only be removed.Mode two：For all
The removing of DTC, when the enable bit is effective, can simultaneously remove all DTCs.Mode three：Reported by the CAN of self-defined ID
Text is removed, and which is also while removing all DTCs.Mode one and two removes DTC online suitable for calibration engineer,
Mode three is not only suitable for calibration engineer and is also applied for maintenance personal, and maintenance personal can be disposable by DTC by diagnostic equipment
All remove clean.
Claims (2)
1. a kind of fault self-diagnosis system of electric-control system, it is characterised in that：Including Fault Identification module, fault processing module,
Failure prompting module, DTC memory module and DTC remove module；
The signal condition of each component in the Fault Identification module detecting system, and real-time judge each signal whether occur it is different
Often；
Fault processing module automatically processes the failure of the normal operation of influence electric-control system, and the signal is substituted with fixed value；
It is abnormal that failure prompting module reminds driver's electric-control system to occur by buzzer or instrument board；
DTC memory module stores DTC in electricity erasable memorizer EEPROM；
DTC removes module in after removal of faults on system, removes failure code.
2. the fault self-diagnosis method of the fault self-diagnosis system of electric-control system as claimed in claim 1 is based on, and its feature exists
In comprising the following steps：
（1）Fault Identification module recognizes failure and confirms, sets just failure judgement position and final fault bit, is worth for 1 representative has
Failure, 0 represents fault-free, and failure is just confirmed when only final fault bit is 1, and CCU first reads the fault value preserved before power-off,
If fault-free, two fault bits are all 0；Conversely, being all 1, then whether complete monitoring failure occurs, and during fault-free, just judges
Fault bit is 0, and after keeping unfaulty conditions 100ms, final fault bit is also 0；When faulty, just failure judgement position is 1, is protected
After holding malfunction 100ms, final fault bit is 1, confirms failure, records DTC；
（2）The failure is transported to fault processing module and failure prompting module, wherein：
Fault handling method, system under test (SUT) has three temperature sensors, and sample respectively pcb board temperature, motor temperature and H bridges drive
Chip temperature, when any one temperature goes wrong, that is, recognizes temperature failure high or the low failure of temperature, and all being replaced with 0 should
Temperature value；When clutch position goes wrong, replace clutch position sampled value using 24000, it is believed that clutch has been in
Fully separating state；
Failure based reminding method, defines two and collects 1 and failure collection 2 without the bit variable failure of symbol 32, each in the two variables
Position all represents a kind of failure, and DTC is transported to 3 modules, and one is the ACS on the CAN message controller dial plate by specific ID
Trouble light, when there is any failure to occur, trouble light is lighted, conversely, extinguishing；Two is the CAN that DTC is passed through into self-defined ID
Message is sent in CAN；Three is to control the buzzer on car, and when there is any failure to occur, buzzer is just with 100ms weeks
Phase ring is gone wrong with pointing out driver's ACS systems；
（3）Encoded and stored into DTC memory module, when DTC is recognized, be temporarily stored in the code at random by CCU
In access memory RAM, once ignition switch is closed, the data are just saved in electricity erasable memorizer EEPROM；
（4）Module is removed by DTC to be purged, each independent DTC can be removed by three kinds of modes, mode
One：Just for the removing enable bit of single DTC, that is to say, that when the enable bit is effective, corresponding DTC can only be removed；
Mode two：For the removing of all DTCs, when the enable bit is effective, all DTCs can be simultaneously removed；Mode three：Pass through
The CAN message of self-defined ID is removed, and which is also while removing all DTCs；Wherein mode one and two is applied to demarcation work
Cheng Shi removes DTC online, and mode three is not only suitable for calibration engineer and is also applied for maintenance personal, and maintenance personal can pass through
Diagnostic equipment is disposable all to remove totally DTC.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646725A (en) * | 2018-07-31 | 2018-10-12 | 河北工业大学 | Dual model method for diagnosing faults based on dynamic weighting |
| CN108733032A (en) * | 2018-06-05 | 2018-11-02 | 北京智行者科技有限公司 | The self checking method of vehicle |
| CN109263657A (en) * | 2018-08-31 | 2019-01-25 | 北京图森未来科技有限公司 | A kind of long-distance monitoring method of automatic driving vehicle, device and system |
| CN110737256A (en) * | 2018-07-18 | 2020-01-31 | 株洲中车时代电气股份有限公司 | method and apparatus for controlling variable frequency drive system |
| CN112230631A (en) * | 2020-12-17 | 2021-01-15 | 广州汽车集团股份有限公司 | Method and system for diagnosing, controlling and processing faults of electric supercharger and electronic equipment |
| CN113110371A (en) * | 2021-03-16 | 2021-07-13 | 佛山市飞驰汽车科技有限公司 | Vehicle fault code storage and transmission system and method |
| CN113311815A (en) * | 2021-06-09 | 2021-08-27 | 中国第一汽车股份有限公司 | Diagnosis method, apparatus, medium, and electronic device for vehicle-mounted controller |
| CN113482773A (en) * | 2021-07-05 | 2021-10-08 | 无锡威孚高科技集团股份有限公司 | Fault management method and device for electric control system of off-road diesel engine |
| US11798325B2 (en) | 2020-12-09 | 2023-10-24 | Cummins Inc. | Fault isolation using on-board diagnostic (OBD) capability data |
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| CN108733032B (en) * | 2018-06-05 | 2021-02-05 | 北京智行者科技有限公司 | Self-checking method for vehicle |
| CN108733032A (en) * | 2018-06-05 | 2018-11-02 | 北京智行者科技有限公司 | The self checking method of vehicle |
| CN110737256A (en) * | 2018-07-18 | 2020-01-31 | 株洲中车时代电气股份有限公司 | method and apparatus for controlling variable frequency drive system |
| CN110737256B (en) * | 2018-07-18 | 2022-11-29 | 株洲中车时代电气股份有限公司 | Method and device for controlling variable-frequency transmission system |
| CN108646725A (en) * | 2018-07-31 | 2018-10-12 | 河北工业大学 | Dual model method for diagnosing faults based on dynamic weighting |
| CN109263657B (en) * | 2018-08-31 | 2021-01-08 | 北京图森智途科技有限公司 | Remote monitoring method, device and system for automatic driving vehicle |
| CN109263657A (en) * | 2018-08-31 | 2019-01-25 | 北京图森未来科技有限公司 | A kind of long-distance monitoring method of automatic driving vehicle, device and system |
| US11798325B2 (en) | 2020-12-09 | 2023-10-24 | Cummins Inc. | Fault isolation using on-board diagnostic (OBD) capability data |
| CN112230631A (en) * | 2020-12-17 | 2021-01-15 | 广州汽车集团股份有限公司 | Method and system for diagnosing, controlling and processing faults of electric supercharger and electronic equipment |
| CN112230631B (en) * | 2020-12-17 | 2021-03-09 | 广州汽车集团股份有限公司 | Method and system for diagnosing, controlling and processing faults of electric supercharger and electronic equipment |
| CN113110371A (en) * | 2021-03-16 | 2021-07-13 | 佛山市飞驰汽车科技有限公司 | Vehicle fault code storage and transmission system and method |
| CN113311815A (en) * | 2021-06-09 | 2021-08-27 | 中国第一汽车股份有限公司 | Diagnosis method, apparatus, medium, and electronic device for vehicle-mounted controller |
| CN113482773A (en) * | 2021-07-05 | 2021-10-08 | 无锡威孚高科技集团股份有限公司 | Fault management method and device for electric control system of off-road diesel engine |
| CN113482773B (en) * | 2021-07-05 | 2022-05-31 | 无锡威孚高科技集团股份有限公司 | Fault management method and device for electric control system of off-road diesel engine |
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