CN102207917A - Multi-node serial communication scanning method - Google Patents
Multi-node serial communication scanning method Download PDFInfo
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- CN102207917A CN102207917A CN2011101492194A CN201110149219A CN102207917A CN 102207917 A CN102207917 A CN 102207917A CN 2011101492194 A CN2011101492194 A CN 2011101492194A CN 201110149219 A CN201110149219 A CN 201110149219A CN 102207917 A CN102207917 A CN 102207917A
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- communication
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- smart machine
- count tag
- overtime
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Abstract
The invention discloses a multi-node serial communication scanning method. The time of the whole polling period is greatly reduced in a mode of counting marks and reducing the polling time of intelligent equipment in a halt or fault state, the communication speed is improved, and the influence on the whole bus communication speed due to the abnormity of the partial intelligent equipment is reduced; when multiple pieces of equipment are halted or failed in the system, the polling period can be shortened to 4 to 5 seconds by adopting the method; and the more the halted or failed equipment are, the more obvious the effect of the method is.
Description
Technical field
The invention belongs to technology of serial communication, be specially a kind of multinode serial communication scan method.
Background technology
Under the serial communication situation, a large amount of stipulations adopt one main many from poll pattern, article one, articulate a plurality of smart machines on the bus, when there is one or more smart machine fault at the scene, reasons such as maintenance stop communication, and when being polled to this smart machine, communication is overtime to be judged by waiting, when having many smart machines to be in interruption status on the bus, communication speed reduces because of waiting overtime being affected of communication.When the scene has multiple devices to be in stopped status, polling cycle even can reach 50-60 second, whole bus communication speed can be affected.
Summary of the invention
At the problems referred to above, the invention provides the multinode serial communication scan method that a kind of communication speed increases, polling cycle reduces greatly.
The technical scheme that the present invention is adopted for its technical matters of solution is:
A kind of multinode serial communication scan method may further comprise the steps:
(1) overtime decision content of normal communication and the overtime decision content of short communication are set, the overtime decision content of short communication is less than the overtime decision content of normal communication;
(2) communication center to passage institute to some extent connection intelligent equipment call, utilize the overtime decision content of normal communication to judge the shutdown or the malfunction of smart machine, to taking place to shut down or the smart machine of malfunction carries out count tag;
Utilize the overtime decision content of normal communication to judge its shutdown or malfunction when (3) communication center is called the smart machine that does not have count tag next time; when calling the smart machine that count tag is arranged next time, communication center utilize the overtime decision content of short communication to judge whether to recover communication; remove count tag when recovering communication, circulate with this.
As preferred embodiment, communication center was all called the smart machine that does not have count tag in each cycle, and be separated by some cycles of communication center just call the smart machine that count tag is arranged.
The invention has the beneficial effects as follows: method of the present invention adopts count tag, reduce to shut down or the mode of malfunction smart machine poll time greatly reduces whole polling cycle and takes time; improve communication speed; reduction because of the part smart machine unusually to the influence of whole bus communication speed; after having many equipment downtimes or fault in the system; adopt method polling cycle of the present invention can shorten to 4-5 second, obvious more in the equipment effect how of the present invention more of shutdown or fault.
Embodiment
A kind of multinode serial communication scan method of the present invention may further comprise the steps:
(1) overtime decision content of normal communication and the overtime decision content of short communication are set, the overtime decision content of short communication is less than the overtime decision content of normal communication, during practical application, the size of the overtime decision content of normal communication can the several seconds, and the overtime decision content of short communication then can be set to tens of milliseconds;
(2) communication center to passage institute to some extent connection intelligent equipment call, utilize the overtime decision content of normal communication to judge the shutdown or the malfunction of smart machine, equipment just often equipment is beamed back at once and is recalled signal, the equipment that surpasses the overtime decision content of normal communication then is judged as the smart machine of shutdown or malfunction, and the smart machine that shutdown or malfunction take place is carried out count tag;
Utilize the overtime decision content of normal communication to judge its shutdown or malfunction when (3) communication center is called the smart machine that does not have count tag next time; when calling the smart machine that count tag is arranged next time, communication center utilize the overtime decision content of short communication to judge whether to recover communication; remove count tag when recovering communication; call according to normal condition after knowing the equipment of count tag, circulate with this.
In addition, in order further to increase sweep velocity, the present invention can be further mode by frequency reducing be optimized, promptly communication center was all called the smart machine that does not have count tag in each cycle, communication center some cycles of being separated by just call the smart machine that count tag is arranged.The method that this frequency reducing is called the smart machine that count tag is arranged can reduce unnecessary calling number of times, further reduces the polling cycle size.
Embodiments of the present invention are not restricted to the described embodiments, as long as it reaches technique effect of the present invention with essentially identical means, all should belong to protection scope of the present invention.
Claims (2)
1. multinode serial communication scan method is characterized in that may further comprise the steps:
(1) overtime decision content of normal communication and the overtime decision content of short communication are set, the overtime decision content of short communication is less than the overtime decision content of normal communication;
(2) communication center to passage institute to some extent connection intelligent equipment call, utilize the overtime decision content of normal communication to judge the shutdown or the malfunction of smart machine, to taking place to shut down or the smart machine of malfunction carries out count tag;
Utilize the overtime decision content of normal communication to judge its shutdown or malfunction when (3) communication center is called the smart machine that does not have count tag next time; when calling the smart machine that count tag is arranged next time, communication center utilize the overtime decision content of short communication to judge whether to recover communication; remove count tag when recovering communication, circulate with this.
2. a kind of multinode serial communication scan method according to claim 1, it is characterized in that communication center all calls the smart machine that does not have count tag in each cycle, communication center some cycles of being separated by just call the smart machine that count tag is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110149219 CN102207917B (en) | 2011-06-03 | 2011-06-03 | Multi-node serial communication scanning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110149219 CN102207917B (en) | 2011-06-03 | 2011-06-03 | Multi-node serial communication scanning method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102207917A true CN102207917A (en) | 2011-10-05 |
| CN102207917B CN102207917B (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110149219 Active CN102207917B (en) | 2011-06-03 | 2011-06-03 | Multi-node serial communication scanning method |
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| Country | Link |
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| CN (1) | CN102207917B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411655A (en) * | 2016-11-04 | 2017-02-15 | 合肥工业大学 | Communication processing method based on state diagnosis of serial communication equipment |
| CN111464372A (en) * | 2019-01-18 | 2020-07-28 | 广东天创同工大数据应用有限公司 | Method for improving communication refreshing speed |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030018930A1 (en) * | 2001-07-18 | 2003-01-23 | Oscar Mora | Peer-to-peer fault detection |
| CN101217415A (en) * | 2008-01-18 | 2008-07-09 | 深圳国人通信有限公司 | A method of polling devices in the repeater |
-
2011
- 2011-06-03 CN CN 201110149219 patent/CN102207917B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030018930A1 (en) * | 2001-07-18 | 2003-01-23 | Oscar Mora | Peer-to-peer fault detection |
| CN101217415A (en) * | 2008-01-18 | 2008-07-09 | 深圳国人通信有限公司 | A method of polling devices in the repeater |
Non-Patent Citations (1)
| Title |
|---|
| 任桥伟等: "一种基于SNMP网管系统的动态轮询算法研究", 《计算机应用与软件》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411655A (en) * | 2016-11-04 | 2017-02-15 | 合肥工业大学 | Communication processing method based on state diagnosis of serial communication equipment |
| CN106411655B (en) * | 2016-11-04 | 2019-08-02 | 合肥工业大学 | Communication processing method based on the diagnosis of serial communication equipment state |
| CN111464372A (en) * | 2019-01-18 | 2020-07-28 | 广东天创同工大数据应用有限公司 | Method for improving communication refreshing speed |
| CN111464372B (en) * | 2019-01-18 | 2021-09-24 | 广东天创同工大数据应用有限公司 | Method for improving communication refreshing speed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102207917B (en) | 2013-09-11 |
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Owner name: ZHUHAI WANLIDA ELECTRICAL AUTOMATION CO., LTD. Free format text: FORMER OWNER: ZHUHAI WANLIDA ELECTRIC CO.,LTD. Effective date: 20140930 |
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Effective date of registration: 20140930 Address after: 519000 Guangdong city of Zhuhai province high tech Zone Technology Innovation Coast technology way Wanlida Relay Protection Technology Park Patentee after: ZHUHAI WANLIDA ELECTRICAL AUTOMATION CO., LTD. Address before: 519085 Guangdong city of Zhuhai province high tech Zone Technology Innovation Coast Technology 1 road Wanlida Electric Co. Ltd. Patentee before: Zhuhai Wanlida Electric Co., Ltd. |