CN102724082A - CAN communication monitoring method based on LabView - Google Patents
CAN communication monitoring method based on LabView Download PDFInfo
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- CN102724082A CN102724082A CN2012101587080A CN201210158708A CN102724082A CN 102724082 A CN102724082 A CN 102724082A CN 2012101587080 A CN2012101587080 A CN 2012101587080A CN 201210158708 A CN201210158708 A CN 201210158708A CN 102724082 A CN102724082 A CN 102724082A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
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Abstract
The invention provides a CAN communication monitoring method based on LabView. The method effectively improves the reliability of CAN communication systems without adding peripheral equipment. The CAN communication monitoring method based on LabView provided by the invention comprises the following steps: a LabView software reads CAN communication data and stores the time stamp of read frame data in a register; the time stamps of the frame data read twice in succession are compared; if the difference delta t between the time stamps of two frame data exceeds a predetermined range, CAN communication fails; if the difference delta t between the time stamps of two frame data is within a predetermined range, CAN communication is normal. The CAN communication monitoring method based on LabView provided by the invention can effectively monitor CAN communication without peripheral equipment adding and cost increasing, thereby the reliability of CAN communication system is improved.
Description
Technical field
The invention belongs to communication technique field, specially refer to a kind of method of the monitoring CAN communication based on LabView.
Background technology
LabView is a kind of patterned programming language, has been widely used in fields such as industry spot, thermometrically, control, emulation.Wherein, often can use the CAN communication module and realize the mutual of information, reach the purpose of state-detection and communicating control information.
Traditional based in the LabView application written program; Whether operate as normal is not done to monitor to the CAN communication module; Because in the stronger environment of interference such as industry spot; Phenomenons such as the CAN cycle is unstable, transmitting-receiving is undesired happen occasionally, and therefore communication is monitored to CAN, finds that timely and effectively fault has seemed particularly important.
Summary of the invention
The objective of the invention is to propose a kind of method of the monitoring CAN communication based on LabView,, increase the reliability of CAN communication system effectively need not to add under the situation of ancillary equipment.
The method of the monitoring CAN communication based on LabView of the present invention is following: LabView software reads the CAN communication data; And the timestamp of the frame data that read is stored in the register; The timestamp of the more double frame data that read then; When the difference DELTA t of the timestamp of two frame data exceeds preset range, represent that then the CAN communication breaks down; When the difference DELTA t of the timestamp of two frame data is in preset range, represent that then the CAN communication is normal.
Observe and verification for convenient, LabView software is stored in the CAN communication data that is read in the array that is provided with in advance, and shows in real time.
Specifically, read and judge that the method for CAN communication data has following two kinds:
1, the said double frame data that read are continuous frame data, when the difference DELTA t of the timestamp of said two frame data is zero, represent that then the CAN communication breaks down; When the difference DELTA t of the timestamp of said two frame data greater than zero the time, represent that then the CAN communication is normal.
This kind reads and judges that the method for CAN communication data specifically comprises the steps:
A:LabView software reads the CAN communication data by frame, and the timestamp of two continuous frames data is stored in respectively in first register and second register;
B: the timestamp of relatively being stored in first register and second register, when the difference DELTA t of the timestamp in two registers is zero, represent that then the CAN communication breaks down, LabView software is reported to the police; When Δ t greater than zero the time, represent that then the CAN communication is normal;
C:, the timestamp in second register is shifted store in first register then with the first register zero clearing;
D: read the next frame data, and the timestamp of these frame data is stored in second register;
E: repeated execution of steps B, C, D are up to stopping monitoring.
In the said A step, LabView software is stored in the CAN communication data that is read in the array that is provided with in advance, and shows in real time.
2, the said double frame data that read are to be blanking time two frame data of scheduled time T, as the difference DELTA t of the timestamp of said two frame data during less than T1 or greater than T2, represent that then the CAN communication breaks down; When the difference DELTA t of the timestamp of said two frame data more than or equal to T1 and when being less than or equal to T2, represent that then the CAN communication is normal; Said T1=T-T0, T2=T+T0, said T0 are predefined redundancy time value.
This kind reads and judges that the method for CAN communication data specifically comprises the steps:
A:LabView software is every to read the CAN communication data one time at a distance from scheduled time T, and the timestamp of the double frame data that read is stored in respectively in first register and second register;
B: the timestamp of relatively being stored in first register and second register, as the difference DELTA t of the timestamp in two registers during, represent that then the CAN communication breaks down less than T1 or greater than T2, LabView software is reported to the police; When Δ t more than or equal to T1 and when being less than or equal to T2, represent that then the CAN communication is normal;
C:, then the timestamp in second register is stored in first register with the first register zero clearing;
D: read the CAN communication data once more, and the timestamp of these frame data is stored in second register;
E: repeated execution of steps B, C, D are up to stopping monitoring.
In the said A step, LabView software is stored in the CAN communication data that is read in the array that is provided with in advance, and shows in real time.
Above-mentioned second method can realize the monitoring to the stability in CAN cycle.
The method of the monitoring CAN communication based on LabView of the present invention need not to add ancillary equipment, under the prerequisite that does not increase cost, can monitor effectively the CAN communication, thereby increase the reliability of CAN communication system.
Embodiment
Below through to the description of embodiment, the effect of mutual alignment between the shape of specific embodiments of the invention such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are done further to specify.
Embodiment 1:
The method based on the monitoring CAN communication of LabView of present embodiment comprises the steps:
A:LabView software reads the CAN communication data by frame, the CAN communication data that is read is stored in the array that is provided with in advance, and shows that in real time the timestamp with the two continuous frames data is stored in respectively in first register and second register simultaneously;
B: the timestamp of relatively being stored in first register and second register, when the difference DELTA t of the timestamp in two registers is zero, represent that then the CAN communication breaks down, LabView software is reported to the police; When Δ t greater than zero the time, represent that then the CAN communication is normal;
C:, the timestamp in second register is shifted store in first register then with the first register zero clearing;
D: read the next frame data, and the timestamp of these frame data is stored in second register;
E: repeated execution of steps B, C, D are up to stopping monitoring.
Embodiment 2:
The method based on the monitoring CAN communication of LabView of present embodiment comprises the steps:
A:LabView software whenever reads the CAN communication data one time at a distance from 10 milliseconds; The CAN communication data that is read is stored in the array that is provided with in advance; And show that in real time the timestamp with the double frame data that read is stored in respectively in first register and second register simultaneously;
B: the timestamp of relatively being stored in first register and second register; When the difference DELTA t of the timestamp in two registers less than 9 milliseconds or during greater than 11 milliseconds; Represent that then the CAN communication breaks down, i.e. the less stable in CAN cycle, LabView software is reported to the police; When Δ t more than or equal to 9 milliseconds and when being less than or equal to 11 milliseconds, represent that then the CAN communication is normal;
C:, then the timestamp in second register is stored in first register with the first register zero clearing;
D: read the CAN communication data once more, and the timestamp of these frame data is stored in second register;
E: repeated execution of steps B, C, D are up to stopping monitoring.
Claims (8)
1. method based on the monitoring CAN communication of LabView; It is characterized in that: LabView software reads the CAN communication data; And the timestamp of the frame data that read is stored in the register; The timestamp of the more double frame data that read then when the difference DELTA t of the timestamp of two frame data exceeds preset range, representes that then the CAN communication breaks down; When the difference DELTA t of the timestamp of two frame data is in preset range, represent that then the CAN communication is normal.
2. the method for the monitoring CAN communication based on LabView according to claim 1 is characterized in that LabView software is stored in the CAN communication data that is read in the array that is provided with in advance, and shows in real time.
3. the method for the monitoring CAN communication based on LabView according to claim 1; It is characterized in that the said double frame data that read are continuous frame data; When the difference DELTA t of the timestamp of said two frame data is zero, represent that then the CAN communication breaks down; When the difference DELTA t of the timestamp of said two frame data greater than zero the time, represent that then the CAN communication is normal.
4. the method for the monitoring CAN communication based on LabView according to claim 3 is characterized in that specifically comprising the steps:
A:LabView software reads the CAN communication data by frame, and the timestamp of two continuous frames data is stored in respectively in first register and second register;
B: the timestamp of relatively being stored in first register and second register, when the difference DELTA t of the timestamp in two registers is zero, represent that then the CAN communication breaks down, LabView software is reported to the police; When Δ t greater than zero the time, represent that then the CAN communication is normal;
C:, the timestamp in second register is shifted store in first register then with the first register zero clearing;
D: read the next frame data, and the timestamp of these frame data is stored in second register;
E: repeated execution of steps B, C, D are up to stopping monitoring.
5. the method for the monitoring CAN communication based on LabView according to claim 4 is characterized in that in the said A step, and LabView software is stored in the CAN communication data that is read in the array that is provided with in advance, and shows in real time.
6. the method for the monitoring CAN communication based on LabView according to claim 1; It is characterized in that the said double frame data that read are is two frame data of the scheduled time T blanking time; As the difference DELTA t of the timestamp of said two frame data during, represent that then the CAN communication breaks down less than T1 or greater than T2; When the difference DELTA t of the timestamp of said two frame data more than or equal to T1 and when being less than or equal to T2, represent that then the CAN communication is normal; Said T1=T-T0, T2=T+T0, said T0 are predefined redundancy time value.
7. the method for the monitoring CAN communication based on LabView according to claim 6 is characterized in that specifically comprising the steps:
A:LabView software is every to read the CAN communication data one time at a distance from scheduled time T, and the timestamp of the double frame data that read is stored in respectively in first register and second register;
B: the timestamp of relatively being stored in first register and second register, as the difference DELTA t of the timestamp in two registers during, represent that then the CAN communication breaks down less than T1 or greater than T2, LabView software is reported to the police; When Δ t more than or equal to T1 and when being less than or equal to T2, represent that then the CAN communication is normal;
C:, then the timestamp in second register is stored in first register with the first register zero clearing;
D: read the CAN communication data once more, and the timestamp of these frame data is stored in second register;
E: repeated execution of steps B, C, D are up to stopping monitoring.
8. the method for the monitoring CAN communication based on LabView according to claim 7 is characterized in that in the said A step, and LabView software is stored in the CAN communication data that is read in the array that is provided with in advance, and shows in real time.
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| CN2012101587080A CN102724082A (en) | 2012-05-22 | 2012-05-22 | CAN communication monitoring method based on LabView |
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| CN2012101587080A CN102724082A (en) | 2012-05-22 | 2012-05-22 | CAN communication monitoring method based on LabView |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104683185A (en) * | 2015-03-06 | 2015-06-03 | 东华大学 | Method for monitoring serial port communication based on Labview |
| CN109143839A (en) * | 2018-09-04 | 2019-01-04 | 广西质量技术工程学校 | A kind of sensor redundancy control method highly fault tolerant |
| CN109696900A (en) * | 2017-10-23 | 2019-04-30 | 北京长城华冠汽车科技股份有限公司 | A kind of system and method for testing board Controller Area Network message sending cycle |
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| CN1560806A (en) * | 2004-03-04 | 2005-01-05 | 深圳市泛海三江电子有限公司 | Fire alarm application layer data transmission method based on CAN2.0B |
| CN201037955Y (en) * | 2007-06-01 | 2008-03-19 | 清华大学 | Fuel batter whole automobile communication network testing device based on TTCAN |
| CN101247288A (en) * | 2008-03-14 | 2008-08-20 | 华为技术有限公司 | Periodic line quality detecting method and device |
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2012
- 2012-05-22 CN CN2012101587080A patent/CN102724082A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1560806A (en) * | 2004-03-04 | 2005-01-05 | 深圳市泛海三江电子有限公司 | Fire alarm application layer data transmission method based on CAN2.0B |
| CN201037955Y (en) * | 2007-06-01 | 2008-03-19 | 清华大学 | Fuel batter whole automobile communication network testing device based on TTCAN |
| CN101247288A (en) * | 2008-03-14 | 2008-08-20 | 华为技术有限公司 | Periodic line quality detecting method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104683185A (en) * | 2015-03-06 | 2015-06-03 | 东华大学 | Method for monitoring serial port communication based on Labview |
| CN104683185B (en) * | 2015-03-06 | 2018-04-20 | 东华大学 | A kind of monitoring serial port communication method based on Labview |
| CN109696900A (en) * | 2017-10-23 | 2019-04-30 | 北京长城华冠汽车科技股份有限公司 | A kind of system and method for testing board Controller Area Network message sending cycle |
| CN109143839A (en) * | 2018-09-04 | 2019-01-04 | 广西质量技术工程学校 | A kind of sensor redundancy control method highly fault tolerant |
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Owner name: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SAIC CHERY AUTOMOBILE CO., LTD. Effective date: 20150715 |
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Effective date of registration: 20150715 Address after: 241000 Yijiang, Anhui Province, Jin Hua Road, No. 226, South Road, No. Applicant after: New-energy automobile Technology Co., Ltd. of Cherry Address before: 241009 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road Applicant before: Saic Chery Automobile Co., Ltd. |
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Application publication date: 20121010 |