CN105159285B - CAN controller bus failure treating method and apparatus - Google Patents
CAN controller bus failure treating method and apparatus Download PDFInfo
- Publication number
- CN105159285B CN105159285B CN201510595435.XA CN201510595435A CN105159285B CN 105159285 B CN105159285 B CN 105159285B CN 201510595435 A CN201510595435 A CN 201510595435A CN 105159285 B CN105159285 B CN 105159285B
- Authority
- CN
- China
- Prior art keywords
- controller
- threshold value
- duration
- closing
- default
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Debugging And Monitoring (AREA)
Abstract
The present invention provides a kind of CAN controller bus failure treating method and apparatus, wherein method includes being periodically detected the mode bit of CAN controller, the duration for occurring bus disengaging Busoff states to detecting mode bit every time is added up, and obtains Fisrt fault duration；When Fisrt fault duration reaches default short closing threshold value, Fisrt fault duration is reset and CAN controller is closed；When the closing duration of CAN controller reaches the first unlatching threshold value, CAN controller is restarted；Return and perform the step of being detected at interval of default detection cycle to the mode bit of CAN controller.CAN controller is effectively ensured by the above method to occur that CAN resource will not be taken after Busoff too much, during control CAN controller is stopped, release CAN channel ensures the proper communication of other controllers, improves the communication efficiency of CAN；Also reduce the load that CAN controller is frequently restarted by Busoff failures in the prior art simultaneously.
Description
Technical field
The present invention relates to automobile bus control technology, more particularly to a kind of CAN fault handling method and device.
Background technology
CAN is controller local area network (Controller Area Network, CAN) abbreviation, is in the world using most
One of extensive fieldbus.Wherein, CAN communication is applied in automotive field, and it is main between each controller in automobile
Communication path.
At present, if occurring may result in control when the short power supply of open lines, circuit or short ground wire in the control system of automobile
The CAN controller of device processed sends erroneous frame always, when erroneous frame reaches 32 frames, i.e., when error counter TEC reaches 255, system
Confirm that the controller occurs in that the Busoff states that CAN departs from, CAN controller can be typically restarted within 20ms；If
CAN controller sends correct frame after restarting, then error counter TEC value is successively decreased；If CAN controller sends mistake after restart
Frame is missed, then error counter TEC value adds up, TEC values are more than or equal to 255, and CAN controller can be continued in Busoff shapes
State；Then CAN controller can persistently restart, by that analogy, the controller broken down under this processing mode its constantly send
Erroneous frame can occupy vehicle CAN communication channel significantly, influence proper communication of other controllers in CAN, influence it
The signal real-time of his controller, the CAN communication to vehicle is affected greatly；On the other hand occur after Busoff states
CAN controller is frequently in rebooting status, has aggravated the load of CAN controller.
The content of the invention
The present invention provides a kind of CAN controller bus failure treating method and apparatus, by departing to CAN controller bus
Busoff state duration timing, and the stop and start moment of CAN controller is controlled according to default time threshold
System, so that CAN controller is effectively ensured occurs that CAN resource will not be taken after Busoff too much, in control CAN controller
During stopping, release CAN channel ensures the proper communication of other controllers, improves the communication efficiency of CAN；Also simultaneously
Reduce the load that CAN controller is frequently restarted by Busoff failures in the prior art.
The present invention provides a kind of CAN controller bus failure processing method, including：
The mode bit of CAN controller is detected at interval of default detection cycle；
Occurs the duration progress that bus departs from Busoff states to the mode bit for detecting the CAN controller every time
It is cumulative, obtain Fisrt fault duration；
When the Fisrt fault duration reaches default short closing threshold value, the Fisrt fault duration is reset and institute is closed
State CAN controller；
When the closing duration of the CAN controller reaches the first unlatching threshold value, the CAN controller is restarted；Return is held
The step of being detected described in row at interval of default detection cycle to the mode bit of CAN controller.
The present invention also provides a kind of CAN controller bus failure processing unit, including：
Detection module, for being detected at interval of default detection cycle to the mode bit of CAN controller；
Failure duration timing module, for there is bus disengaging to the mode bit for detecting the CAN controller every time
The duration of Busoff states is added up, and obtains Fisrt fault duration；
Control module, for when the Fisrt fault duration reach it is default it is short closing threshold value when, during by the Fisrt fault
It is long to reset and close the CAN controller；
The control module, is additionally operable to, when the closing duration of the CAN controller reaches the first unlatching threshold value, restart institute
State CAN controller.
The CAN controller bus failure treating method and apparatus of the present invention, by being periodically detected whether CAN controller goes out
Existing bus departs from Busoff states, and carries out timing to the duration of Busoff states, and is persistently added up in Busoff states
When duration reaches default closing threshold value, CAN controller is closed；And when the closing duration of CAN controller reaches default unlatching threshold value
When, restart the CAN controller.So as to which CAN controller is effectively ensured occur that CAN money will not be taken after Busoff too much
Source, during control CAN controller is stopped, release CAN channel ensures the proper communication of other controllers, improves
The communication efficiency of CAN；Also reduce that CAN controller in the prior art frequently restarts by Busoff failures simultaneously is negative
Lotus.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment one of CAN controller bus failure processing method of the present invention；
Fig. 2 is the flow chart of the embodiment two of CAN controller bus failure processing method of the present invention；
Fig. 3 is the structural representation of the embodiment one of CAN controller bus failure processing unit of the present invention；
Fig. 4 is the structural representation of the embodiment two of CAN controller bus failure processing unit of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described.It should be noted that in accompanying drawing or specification,
Similar or identical element all uses identical reference.
Fig. 1 is the flow chart of the embodiment one of CAN controller bus failure processing method of the present invention, as shown in figure 1, this reality
Applying the method for example includes：
Step 101, at interval of default detection cycle the mode bit of CAN controller is detected.
Step 102, the duration for occurring bus disengaging Busoff states to the mode bit for detecting CAN controller every time
Added up, obtain Fisrt fault duration.
Step 103, when Fisrt fault duration reach it is default it is short closing threshold value when, Fisrt fault duration is reset and closed
CAN controller.
Step 104, when the closing duration of CAN controller reaches the first unlatching threshold value, restart CAN controller, and return
Step 101 continues cycling through execution.
The CAN controller bus failure processing method that the present embodiment is provided, by being periodically detected whether CAN controller goes out
Existing bus departs from Busoff states, and carries out timing to the duration of Busoff states, and is persistently added up in Busoff states
When duration reaches default closing threshold value, CAN controller is closed；And when the closing duration of CAN controller reaches default unlatching threshold value
When, restart the CAN controller.So as to which CAN controller is effectively ensured occur that CAN money will not be taken after Busoff too much
Source, during control CAN controller is stopped, release CAN channel ensures the proper communication of other controllers, improves
The communication efficiency of CAN；Also reduce that CAN controller in the prior art frequently restarts by Busoff failures simultaneously is negative
Lotus.
Fig. 2 is the flow chart of the embodiment two of CAN controller bus failure processing method of the present invention, as shown in Fig. 2 upper
State on the basis of embodiment, the method for the present embodiment includes：
Step 201, at interval of default detection cycle the mode bit of CAN controller is detected.
Specifically, detection application program of the setting to CAN controller, the application program is according to the sufficiently fast cycle to CAN
The mode bit of controller is checked, to prevent the loss of Busoff states.It is preferred that, detection cycle can be preset and be less than or equal to
10ms。
Step 202, the duration for occurring bus disengaging Busoff states to the mode bit for detecting CAN controller every time
Added up, obtain Fisrt fault duration.
Specifically, the timing of Busoff state bit durations can be defined in the detection application program of CAN controller
Device, when detecting Busoff, timer is added up to the Busoff duration.That timer adds up is Busoff lasting
Time, no matter Busoff duration length, can be added up to the Busoff times, what it reflected is that CAN is actual
Busoff states, therefore, it is possible to reflect the Busoff order of severity exactly.The cumulative obtained time value of the timer is the
One failure duration T1.
Step 203, when Fisrt fault duration T1 reach it is default it is short closing threshold value when, Fisrt fault duration T1 is reset and closed
Close CAN controller.
Specifically, when the cumulative obtained Fisrt fault duration T1 of the Busoff timers of CAN controller reaches default short pass
When closing threshold value, CAN controller can be closed, that close here is the CAN for being responsible for CAN communication function in automobile each controller
Controller, rather than the automobile controller is closed.CAN controller is closed, the CAN that temporarily can will occur bus communication failure
Controller stops a period of time, it is repaired the failure of itself, while making the failure CAN controller exit CAN communication circuit, allows
Go out CAN communication resource space, so that the CAN controller of other normal conditions can not be influenceed by failure CAN controller, normally
Communication.Meanwhile, in the prior art, when Busoff states occur for CAN controller, it can restart at once, continually restarting can also aggravate
The load of the CAN controller, reaches that default short closing threshold value stops the method for CAN controller at once, no by using timer
But CAN resource can be discharged, the load of CAN controller can also be alleviated.It is preferred that, default short closing threshold value can be set
It is set to 30ms.When the Fisrt fault duration T1 of timer reaches default short closing threshold value, a CAN controller is closed；
After CAN controller is restarted, continue to CAN controller timing, therefore, reboot operation is closed per circulation primary CAN controller, by the
One failure duration T1 carries out a clear operation, to ensure that timer record Busoff state durations are accurate.
Step 204, the Fisrt fault duration T1 obtained every time added up, obtain cumulative duration value T2.
Although specifically, setting when Fisrt fault duration T1 reaches default short closing threshold value, CAN controller is closed
Strategy, to ensure the CAN communication resource, still, CAN controller close during, its failure occurred still may be used
It can be repaired, after restarting CAN controller, it still may frequently reach default short closing threshold value, without stopping
Repetition close, the process restarted, for the CAN controller more serious to failure, though the situation of CAN shared by its failure
So alleviate, but taken the situation of CAN and still existed, in order to further be managed to failure CAN controller
Reason, can be added up to the Fisrt fault duration T1 obtained every time, obtain cumulative duration value T2.
Step 205, when cumulative duration value T2 reach it is default long close threshold value when, cumulative duration value T2 is reset and closed
CAN controller.
Specifically, when the cumulative duration value T2 of CAN controller Busoff timers reaches default long closing threshold value, closing
CAN controller.Because CAN controller fails to repair failure completely during the recovery after reaching default short closing threshold value, when tired
When added-time long value T2 reaches default long closing threshold value, CAN controller can be closed using longer duration interval, make its failure extensive
It is multiple.It is preferred that, default long threshold value of closing can be set as 300ms.
Wherein, the default long threshold value of closing in step 205 is more than the default short closing threshold value in step 203.It is preferred that, in advance
If short closing threshold value is 30ms, it is 300ms to preset long threshold value of closing.
Further, also include after step 203：
Step 206, when the closing duration of CAN controller reaches the first unlatching threshold value, restart CAN controller, and return
Step 201 continues cycling through execution.
Specifically, the first unlatching threshold value can be set as T3 for 50ms.50ms is once to recover soon, bus-off when
In, it is ensured that do not have faulty node normally to send message.
Further, also include after step 205：
Step 207, when the closing duration of CAN controller reaches the second unlatching threshold value, restart CAN controller, and return
Step 201 continues cycling through execution.
Specifically, the second unlatching threshold value can be set as T4 for 500ms, when in step 205, Busoff timers reach pre-
If long close threshold value 300ms, illustrate that catastrophe failure occurs for CAN controller, bus-off should set the sufficiently long time, it is to avoid
Excessive interference is caused to bus.Wherein, second in step 207 opens the first unlatching threshold value that threshold value is more than in step 206.
It is preferred that, first opens threshold value for 50ms；Second opens threshold value for 500ms.
On the basis of above-described embodiment, further, this method also includes：Statistics CAN controller reaches default short pass
Threshold value and/or the default long number of times for closing threshold value are closed, the secondary numerical value obtained according to statistics judges the bus failure of CAN controller
Degree.
Fig. 3 is the structural representation of the embodiment one of CAN controller bus failure processing unit of the present invention, as shown in figure 3,
The device of the present embodiment includes：Detection module 1, for being examined at interval of default detection cycle to the mode bit of CAN controller
Survey.Failure duration timing module 2, departs from Busoff states for occurring bus to the mode bit for detecting CAN controller every time
Duration added up, obtain Fisrt fault duration.Control module 3, for reaching default short pass when Fisrt fault duration
When closing threshold value, Fisrt fault duration is reset and CAN controller is closed.Control module 3, is additionally operable to the closing when CAN controller
When duration reaches the first unlatching threshold value, CAN controller is restarted.
The device of the present embodiment, can be used for perform Fig. 1 shown in embodiment of the method one technical scheme, its realization principle and
Technique effect is similar, and here is omitted.
The CAN controller bus failure processing unit that the present embodiment is provided, by being periodically detected whether CAN controller goes out
Existing bus departs from Busoff states, and carries out timing to the duration of Busoff states, and is persistently added up in Busoff states
When duration reaches default closing threshold value, CAN controller is closed；And when the closing duration of CAN controller reaches default unlatching threshold value
When, restart the CAN controller.So as to which CAN controller is effectively ensured occur that CAN money will not be taken after Busoff too much
Source, during control CAN controller is stopped, release CAN channel ensures the proper communication of other controllers, improves
The communication efficiency of CAN；Also reduce that CAN controller in the prior art frequently restarts by Busoff failures simultaneously is negative
Lotus.
Fig. 4 is the structural representation of the embodiment two of CAN controller bus failure processing unit of the present invention, as shown in figure 4,
The system and device of the present embodiment on the basis of Fig. 3 shown devices, in addition to：Cumulative timing module 4, for that will obtain every time
Fisrt fault duration is added up, and obtains cumulative duration value.Control module 3, is additionally operable to when cumulative duration value reaches default long pass
When closing threshold value, the cumulative duration value of cumulative timing module 4 is reset and CAN controller is closed.Wherein, long closing threshold value is preset big
In default short closing threshold value.Further, control module 3, are additionally operable to reset by the cumulative duration value of cumulative timing module 4
Afterwards, when the closing duration of CAN controller reaches the second unlatching threshold value, CAN controller is restarted.Wherein, the second unlatching threshold value is more than
First opens threshold value.Further, in addition to：Statistical module 5, for count CAN controller reach it is default it is short closing threshold value and/
Or the default long number of times for closing threshold value.Judge module 6, for the secondary numerical value obtained according to statistical module counts, judges that CAN is controlled
The bus failure degree of device.Wherein, it is preferred that default detection cycle is less than or equal to 10ms；Default short closing threshold value is 30ms；In advance
If long threshold value of closing is 300ms；First opens threshold value for 50ms；Second opens threshold value for 500ms.
The device of the present embodiment, can be used for perform Fig. 2 shown in embodiment of the method two technical scheme, its realization principle and
Technique effect is similar, and here is omitted.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit and model of various embodiments of the present invention technical scheme
Enclose.
Claims (8)
1. a kind of CAN controller bus failure processing method, it is characterised in that including：
The mode bit of CAN controller is detected at interval of default detection cycle；
The duration for occurring bus disengaging Busoff states to the mode bit for detecting the CAN controller every time is tired out
Plus, obtain Fisrt fault duration；
When the Fisrt fault duration reaches default short closing threshold value, the Fisrt fault duration is reset and closed described
CAN controller；
When the closing duration of the CAN controller reaches the first unlatching threshold value, the CAN controller is restarted；Return and perform institute
State the step of being detected at interval of default detection cycle to the mode bit of CAN controller；
After the clearing by the Fisrt fault duration, in addition to：
The Fisrt fault duration obtained every time is added up, cumulative duration value is obtained；
When the cumulative duration value reaches default long closing threshold value, the cumulative duration value is reset and closes the CAN and is controlled
Device processed；
The default long threshold value of closing is more than the default short closing threshold value.
2. according to the method described in claim 1, it is characterised in that described that the cumulative duration value is reset and closed described
After CAN controller, in addition to：
In the case where the cumulative duration value is reset, when the closing duration of the CAN controller reaches the second unlatching threshold value, weight
Open the CAN controller；Described second, which opens threshold value, is more than the described first unlatching threshold value.
3. according to the method described in claim 1, it is characterised in that methods described also includes：
Count the CAN controller and reach the default short number of times for closing threshold value and/or the default long closing threshold value, according to
Obtained secondary numerical value is counted, the bus failure degree of the CAN controller is judged.
4. method according to claim 2, it is characterised in that the default detection cycle is less than or equal to 10ms；It is described pre-
If short closing threshold value is 30ms；The default long threshold value of closing is 300ms；Described first opens threshold value for 50ms；Described second
Unlatching threshold value is 500ms.
5. a kind of CAN controller bus failure processing unit, it is characterised in that including：
Detection module, for being detected at interval of default detection cycle to the mode bit of CAN controller；
Failure duration timing module, departs from Busoff for occurring bus to the mode bit for detecting the CAN controller every time
The duration of state is added up, and obtains Fisrt fault duration；
Control module, for when the Fisrt fault duration reaches default short closing threshold value, by Changqing during the Fisrt fault
Zero and close the CAN controller；
The control module, is additionally operable to when the closing duration of the CAN controller reaches the first unlatching threshold value, restarts described
CAN controller；
Also include：
Cumulative timing module, for the Fisrt fault duration obtained every time to be added up, obtains cumulative duration value；
The control module, is additionally operable to when the cumulative duration value reaches default long closing threshold value, by the cumulative timing mould
The cumulative duration value of block resets and closes the CAN controller；
The default long threshold value of closing is more than the default short closing threshold value.
6. device according to claim 5, it is characterised in that
The control module, is additionally operable to after the cumulative duration value of the cumulative timing module is reset, the CAN controls
When the closing duration of device reaches the second unlatching threshold value, the CAN controller is restarted；
Described second, which opens threshold value, is more than the described first unlatching threshold value.
7. device according to claim 5, it is characterised in that also include：
Statistical module, the default short closing threshold value and/or the default long closing threshold are reached for counting the CAN controller
The number of times of value；
Judge module, for the secondary numerical value obtained according to the statistical module counts, judges the bus failure of the CAN controller
Degree.
8. device according to claim 6, it is characterised in that the default detection cycle is less than or equal to 10ms；It is described pre-
If short closing threshold value is 30ms；The default long threshold value of closing is 300ms；Described first opens threshold value for 50ms；Described second
Unlatching threshold value is 500ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510595435.XA CN105159285B (en) | 2015-09-17 | 2015-09-17 | CAN controller bus failure treating method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510595435.XA CN105159285B (en) | 2015-09-17 | 2015-09-17 | CAN controller bus failure treating method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105159285A CN105159285A (en) | 2015-12-16 |
| CN105159285B true CN105159285B (en) | 2017-09-12 |
Family
ID=54800170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510595435.XA Active CN105159285B (en) | 2015-09-17 | 2015-09-17 | CAN controller bus failure treating method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105159285B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105677466B (en) * | 2015-12-31 | 2019-08-30 | 百度在线网络技术（北京）有限公司 | The method and apparatus of the downgrade processing of third-party application interface |
| CN105634895A (en) * | 2016-01-26 | 2016-06-01 | 深圳市沃特玛电池有限公司 | Error processing method and system for CAN (Controller Area Network) bus |
| CN106124865A (en) * | 2016-08-31 | 2016-11-16 | 北京汽车股份有限公司 | The measuring method of the capacitance of differential capacitance and device |
| CN110147090B (en) * | 2019-06-30 | 2020-12-22 | 潍柴动力股份有限公司 | Method and system for processing controller local area network bus closing fault |
| CN114265807A (en) * | 2021-12-22 | 2022-04-01 | 飞瑞医疗器械(嘉兴)有限公司 | Self-recovery method and device for closing beam limiter CAN bus and electronic equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008000562A1 (en) * | 2008-03-07 | 2009-09-10 | Robert Bosch Gmbh | Communication system comprising a data bus and a plurality of subscriber nodes connected thereto and methods for operating such a communication system |
| DE102008002738B4 (en) * | 2008-06-27 | 2010-03-11 | Airbus Deutschland Gmbh | Method for detecting a faulty node |
| CN101783759B (en) * | 2010-01-19 | 2012-02-01 | 浙江吉利汽车研究院有限公司 | Bus error recovery processing method |
| CN102830680A (en) * | 2012-09-11 | 2012-12-19 | 安徽江淮汽车股份有限公司 | Remote monitoring controller for hybrid power vehicle |
| US9524222B2 (en) * | 2013-09-16 | 2016-12-20 | GM Global Technology Operations LLC | Method and apparatus for fault detection in a controller area network |
| CN104181914B (en) * | 2014-08-15 | 2017-05-10 | 上海信耀电子有限公司 | Automobile fault detection method and system |
-
2015
- 2015-09-17 CN CN201510595435.XA patent/CN105159285B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105159285A (en) | 2015-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105159285B (en) | CAN controller bus failure treating method and apparatus | |
| CN103676722B (en) | Use interrogation and the response of the security system of the watchdog timer of amendment | |
| CN104486100B (en) | Fault treating apparatus and method | |
| CN104570721B (en) | Redundant manipulator master slave mode determines method | |
| CN106789306B (en) | Method and system for detecting, collecting and recovering software fault of communication equipment | |
| CN107390511A (en) | For the method for the automated system for running redundancy | |
| CN105216631B (en) | The restoration methods of many normal boot sequences of subordinate inverter of train | |
| US20150082096A1 (en) | Method and apparatus for fault detection n a controller area network | |
| US20140149801A1 (en) | Method and apparatus for isolating a fault in a controller area network | |
| CN104426696B (en) | A kind of method of troubleshooting, server and system | |
| CN104782082A (en) | New approach for controller area network bus off handling | |
| CN104104542B (en) | A kind of real-time intelligent troubleshooting method based on RS485 | |
| CN101420350A (en) | Master node failure tolerant method for TTCAN bus network time | |
| CN109768907A (en) | A kind of CAN bus baud rate self-adapting setting method | |
| WO2016192212A1 (en) | Method and apparatus for processing power down warning information of optical network unit onu | |
| JP2013514497A (en) | Monitoring concept in control equipment | |
| CN105490768B (en) | A kind of automatic calibrating method of concentrator clock chip | |
| CN110502369A (en) | A kind of method, apparatus and storage medium of equipment crash recovery | |
| CN106874126A (en) | Host process method for detecting abnormality in a kind of software development | |
| WO2014039032A1 (en) | Method and apparatus for isolating a fault-active controller in a controller area network | |
| CN104158843A (en) | Storage unit invalidation detecting method and device for distributed file storage system | |
| CN104836679B (en) | Communication abnormality processing method and network element device | |
| CN105224411B (en) | It is a kind of to avoid CPU from being depleted the method for causing house dog to be restarted | |
| CN104301179B (en) | Sensor data transmission system failure monitoring method based on Ethernet | |
| CN108234225B (en) | Method and device for monitoring communication quality between master station and slave station of wind generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |