CN1767442A - Automatized monitoring system and method for protecting data communication between devices - Google Patents
Automatized monitoring system and method for protecting data communication between devices Download PDFInfo
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- CN1767442A CN1767442A CN 200410065125 CN200410065125A CN1767442A CN 1767442 A CN1767442 A CN 1767442A CN 200410065125 CN200410065125 CN 200410065125 CN 200410065125 A CN200410065125 A CN 200410065125A CN 1767442 A CN1767442 A CN 1767442A
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Abstract
This invention provides a data communication method using the combination of UDP and TCP between the automatic monitor system and the protection device including initialization, information exchange, communication interruption, resuming and the final end, in which, the protection device sends TCP single way reports to the automatic monitor system, which sends UDP messages to the protection device to ensure the quickness and reliability of the information transmission.
Description
Technical field
The present invention relates to the communication means of hydroelectric plant's Automatic monitoring systems.When specifically the present invention relates to hydroelectric plant's Automatic monitoring systems and protecting equipment room to carry out information exchange, the data communications method that adopts Ethernet UDP to combine with TCP.Belong to electronic information communication technical field.
Background technology
In the hydroelectric plant, hydroelectric plant's Automatic monitoring systems adopt Ethernet to carry out information exchange with a plurality of protection equipment rooms usually.If only adopt the UDP mode, speed is fast, but poor reliability, can obliterated data.If only adopt the TCP mode, though reliability is guaranteed, speed is slow, can't guarantee information the promptness of transmission.If rationally adopt UDP to combine with TCP, then reliability and rapidity can both be guaranteed.
Hydroelectric plant's Automatic monitoring systems have UDP and TCP dual mode with the network service of protection equipment room at present.They carry out information exchange by UDP message or TCP message, and these messages can transmit Automatic monitoring systems and the information of protecting equipment room basically under the normal situation of network.But use the reliability and the promptness of the guarantee information transmission simultaneously of above-mentioned two kinds of communication modes respectively, specific as follows:
1, only adopt the UDP mode, speed is fast, but poor reliability, can obliterated data.
Hydroelectric plant's Automatic monitoring systems usually with the information exchange of carrying out of a plurality of protection equipment rooms, server adopts UDP taking turn message, behind the UDP message dropping, server can't be retransmitted automatically, causes loss of data.The unidirectional message of customer end adopted UDP, a plurality of protection equipment may send the UDP message to server simultaneously, cause network blockage easily and make the UDP message dropping, cause swap data to be lost.When server when client sends remote control UDP message, if loss of data, can cause can't be in automated system the serious consequence of distant place control field apparatus.
2, only adopt the TCP mode, though reliability is guaranteed, speed is slow, can't guarantee information the promptness of transmission.
In the TCP mode, generally Automatic monitoring systems are called server, protection equipment is called client.Client will with server before carrying out information exchange, at first to connect.User end to server must know whether server is online before initiating to connect.Under normal connection status, if do not carry out remote control, the unidirectional message of customer end adopted TCP can transmit Automatic monitoring systems and the information of protecting equipment room basically, and reliability of information transmission and promptness can both be guaranteed like this.But whether online in order to know server, server must regularly send the TCP message to client, because the TCP message has retransmission mechanism, two-way repeating transmission causes network blockage easily.For preventing network blockage, client can not adopt the unidirectional message of TCP, and must adopt server TCP to send the taking turn message, like this, and the promptness of just can't guarantee information transmitting.
For the information of protecting equipment can in time be transferred in the Automatic monitoring systems reliably, at ordinary times, protection equipment preferably adopts the unidirectional message of TCP to the Automatic monitoring systems direction, and Automatic monitoring systems preferably adopt the UDP message to protection equipment.When Automatic monitoring systems adopt Ethernet UDP to combine with TCP with the protection equipment room; reliability of information transmission and rapidity can both be guaranteed; therefore, Automatic monitoring systems are very necessary with the data communications method that the protection equipment room adopts UDP to combine with TCP.
Summary of the invention
The purpose of this invention is to provide a kind of data communications method that adopts UDP to combine based on Automatic monitoring systems and protection equipment room with TCP.This method sends the unidirectional message of TCP to Automatic monitoring systems at ordinary times by protection equipment, and Automatic monitoring systems are come the promptness and the reliability of guarantee information transmission to the mode of protection equipment transmission UDP message.
The present invention takes following technical scheme to realize:
A kind of Automatic monitoring systems and protection equipment room data communications method, implementation step is as follows:
1, initialization: initialization is set up TCP exactly and is connected, and server initiatively sends the UDP message that comprises the network node name that identifies own nodename; After client computer is received the UDP message of server, can extract the IP address of server end and initiate to connect to the tcp port of this address then;
2, information exchange: server has following dual mode: a, transmission/nothing to answer with information exchange between the client computer: client computer is in the passage that normally connects, and initiatively sending to server needs the measured value that circulation sends or need the initiatively event information TCP message of transmission; B, transmission/affirmation: by server to the client computer transmitting control commands, parameter is set; After client computer was received the TCP message of server, client computer sends to server confirmed the TCP message; In whole information exchanging process, server all regularly sends to client computer and contains the temporal information broadcasting packet;
3, communication disruption and recovery: communication disruption only occurs in the situation that the physical link between server and the client computer disconnects, and breaks down as network, and client computer or server are out of service etc.; Server regularly detects the TCP message of client to check communication link, if communication link does not exist, then is judged as communication disruption, disconnects the TCP link and connects; The TCP message audit communication link that send in the client computer utilization circulation if communication link does not exist, then is judged as communication disruption, interrupts being connected with the TCP of server; It is identical with initialization procedure to rebulid connection procedure after the communication disruption;
4, finish: client computer or server are out of service; Client computer is out of service, and server disconnects the TCP link and connects, and stops the message to client computer transmitting control commands TCP; Server is out of service, and client computer stops to send circulation and spontaneous TCP message to server.
Beneficial effect:
The maximum characteristics of the method for the invention are to use UDP to combine with TCP in the communication between hydroelectric plant's Automatic monitoring systems and the protection equipment; send the unidirectional message of TCP to Automatic monitoring systems at ordinary times by protection equipment, Automatic monitoring systems are come the promptness and the reliability of guarantee information transmission to the mode of protection equipment transmission UDP message.Simultaneously, reliability of information transmission has improved the fail safe of whole hydroelectric plant automated system operation.
Description of drawings
Fig. 1 is the initialization procedure figure of Automatic monitoring systems of the present invention with protection equipment room data communications method; Wherein---the expression transport layer starts,------startup of expression consumer process,---expression connection status;
Fig. 2 is the information exchanging process figure of Automatic monitoring systems of the present invention with protection equipment room data communications method;
Fig. 3 is Automatic monitoring systems of the present invention and protection equipment room data communications method communication disruption procedure chart;
Embodiment:
A kind of data communications method that uses UDP to combine based on hydroelectric plant's Automatic monitoring systems and protection equipment room of the present invention as Figure 1-3 with TCP, implementation step is as follows:
1, initialization: initialization is promptly set up TCP and is connected.Server initiatively sends the UDP message that comprises the network node name that identifies own nodename; After client computer is received the UDP message of server, can extract the IP address of server end and initiate to connect to the tcp port of this address then.
2, information exchange: server has following dual mode: a, transmission/nothing to answer with information exchange between the client computer: client computer is in the passage that normally connects, and initiatively sending to server needs the measured value that circulation sends or need the initiatively event information TCP message of transmission.B, transmission/affirmation: by server to the client computer transmitting control commands, parameter is set; After client computer was received the TCP message of server, client computer sends to server confirmed the TCP message.In whole information exchanging process, server all regularly sends to client computer and contains the temporal information broadcasting packet.
3, communication disruption and recovery: communication disruption only occurs in the situation that the physical link between server and the client computer disconnects, and breaks down as network, and client computer or server are out of service etc.Server regularly detects the TCP message of client to check communication link, if communication link does not exist, then is judged as communication disruption, disconnects the TCP link and connects.The TCP message audit communication link that send in the client computer utilization circulation if communication link does not exist, then is judged as communication disruption, interrupts being connected with the TCP of server.It is identical with initialization procedure to rebulid connection procedure after the communication disruption.
4, finish: client computer or server are out of service.Client computer is out of service, and server disconnects the TCP link and connects, and stops the message to client computer transmitting control commands TCP.Server is out of service, and client computer stops to send circulation and spontaneous TCP message to server.
Present embodiment be hydroelectric plant's Automatic monitoring systems with 3 line protective devices between communicate by letter, the communication information is: remote measurement amount, remote signalling amount and remote control amount.Automatic monitoring systems starting back just regularly sends the UDP message to 3 line protective devices, and online line protective device initiates to connect to Automatic monitoring systems.Under normal connection status, online line protective device regularly sends all remote measurement amounts and remote signalling amount TCP message to Automatic monitoring systems, sends automatically to change remote measurement amount and remote signalling amount TCP message.When the needs remote control, a certain the transmission guidance command TCP message of Automatic monitoring systems in online line protective device receives that the equipment of remote control order sends confirmation TCP message to Automatic monitoring systems.Like this, Automatic monitoring systems do not need to send to 3 line protective devices the TCP or the UDP message of taking turn, have reduced the network service amount of information; Simultaneously, as long as remote measurement amount and remote signalling amount change, line protective device just sends automatically, has improved the promptness of message transmission.
Present embodiment limits the present invention never in any form, and all employings are equal to the formed technical scheme of form of replacement or equivalent transformation, all drop within protection scope of the present invention.
Claims (1)
1, a kind of Automatic monitoring systems and the data communications method of protecting equipment room, implementation step is as follows:
(1) initialization: initialization is set up TCP exactly and is connected; Server initiatively sends the UDP message that comprises the network node name that identifies own nodename; After client computer is received the UDP message of server, can extract the IP address of server end and initiate to connect to the tcp port of this address then;
(2) information exchange: server has following dual mode: a, transmission/nothing to answer with information exchange between the client computer: client computer is in the passage that normally connects, and initiatively sending to server needs the measured value that circulation sends or need the initiatively event information TCP message of transmission; B, transmission/affirmation: by server to the client computer transmitting control commands, parameter is set; After client computer was received the TCP message of server, client computer sends to server confirmed the TCP message; In whole information exchanging process, server all regularly sends to client computer and contains the temporal information broadcasting packet;
(3) communication disruption and recovery: communication disruption only occurs in the situation that the physical link between server and the client computer disconnects; Server regularly detects the TCP message of client to check communication link, if communication link does not exist, then is judged as communication disruption, disconnects the TCP link and connects; The TCP message audit communication link that send in the client computer utilization circulation if communication link does not exist, then is judged as communication disruption, interrupts being connected with the TCP of server; It is identical with initialization procedure to rebulid connection procedure after the communication disruption;
(4) finish: client computer or server are out of service; Client computer is out of service, and server disconnects the TCP link and connects, and stops the message to client computer transmitting control commands TCP; Server is out of service, and client computer stops to send circulation and spontaneous TCP message to server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100651259A CN100553195C (en) | 2004-10-25 | 2004-10-25 | Automatic monitoring systems and protection equipment room data communications method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100651259A CN100553195C (en) | 2004-10-25 | 2004-10-25 | Automatic monitoring systems and protection equipment room data communications method |
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| Publication Number | Publication Date |
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| CN1767442A true CN1767442A (en) | 2006-05-03 |
| CN100553195C CN100553195C (en) | 2009-10-21 |
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| CNB2004100651259A Expired - Fee Related CN100553195C (en) | 2004-10-25 | 2004-10-25 | Automatic monitoring systems and protection equipment room data communications method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009109133A1 (en) * | 2008-03-04 | 2009-09-11 | 华为技术有限公司 | Method and apparatus for recovering the connection |
| CN101500346B (en) * | 2009-03-18 | 2011-05-04 | 杭州华三通信技术有限公司 | Initial configuration method, system for wireless network equipment and wireless network equipment |
| CN102547381A (en) * | 2010-12-14 | 2012-07-04 | 深圳长城开发科技股份有限公司 | LAN (Local Area Network) based video-on-demand method and system |
| CN103457985A (en) * | 2012-11-23 | 2013-12-18 | 航天数联信息技术（深圳）有限公司 | Method and system of dual-channel communication |
| CN103873472A (en) * | 2014-03-18 | 2014-06-18 | 广州市纬志电子科技有限公司 | Method for automatically having access to network |
-
2004
- 2004-10-25 CN CNB2004100651259A patent/CN100553195C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009109133A1 (en) * | 2008-03-04 | 2009-09-11 | 华为技术有限公司 | Method and apparatus for recovering the connection |
| US8793494B2 (en) | 2008-03-04 | 2014-07-29 | Huawei Technologies Co., Ltd. | Method and apparatus for recovering sessions |
| CN101500346B (en) * | 2009-03-18 | 2011-05-04 | 杭州华三通信技术有限公司 | Initial configuration method, system for wireless network equipment and wireless network equipment |
| CN102547381A (en) * | 2010-12-14 | 2012-07-04 | 深圳长城开发科技股份有限公司 | LAN (Local Area Network) based video-on-demand method and system |
| CN103457985A (en) * | 2012-11-23 | 2013-12-18 | 航天数联信息技术（深圳）有限公司 | Method and system of dual-channel communication |
| CN103457985B (en) * | 2012-11-23 | 2016-12-21 | 航天数联信息技术（深圳）有限公司 | A kind of dual-channels communication method and system |
| CN103873472A (en) * | 2014-03-18 | 2014-06-18 | 广州市纬志电子科技有限公司 | Method for automatically having access to network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100553195C (en) | 2009-10-21 |
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Assignee: NANJING GUODIAN NANZI RURAL POWER GRID AUTOMATION ENGINEERING CO., LTD. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2011320000363 Denomination of invention: Automatized monitoring system and method for protecting data communication between devices Granted publication date: 20091021 License type: Exclusive License Open date: 20060503 Record date: 20110323 |
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Assignee: NANJING GUODIAN NANZI RURAL POWER GRID AUTOMATION ENGINEERING CO., LTD. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2011320000363 Date of cancellation: 20150107 |
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