CN202085175U - Device for seamless switching between communication management host unit and communication management standby unit - Google Patents
Device for seamless switching between communication management host unit and communication management standby unit Download PDFInfo
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- CN202085175U CN202085175U CN2010206623183U CN201020662318U CN202085175U CN 202085175 U CN202085175 U CN 202085175U CN 2010206623183 U CN2010206623183 U CN 2010206623183U CN 201020662318 U CN201020662318 U CN 201020662318U CN 202085175 U CN202085175 U CN 202085175U
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Abstract
The utility model provides a device for seamless switching between a communication management host unit and a communication management standby unit. The device comprises the communication management host unit and the communication management standby unit, the communication management host unit and the communication management standby unit are connected through a host-standby communication link, and the communication management host unit and the communication management standby unit are identical in structure and each comprises a plurality of physical communication interfaces, a message transceiving cache region unit and a real-time database unit. Through the seamless switching between the communication management host unit and the communication management standby unit, the device ensures that the communication management standby unit simulates the working state of the communication management host unit at all times, so that the working state of the host unit is consistent with that of the standby unit; and the host unit simply sends a small amount of information received on a present unlink or downlink communication media link to the standby unit in a real-time manner. The device for seamless switching between a communication management host unit and a communication management standby unit can achieve the purpose of the seamless switching between the communication management host unit and the communication management standby unit, and is of significance to ensure the reliable and continuous communication of a system in a major monitoring place.
Description
Technical field
The utility model relates to communication technical field, especially relates to the device of the active and standby machine seamless switching of a kind of communication manager.
Background technology
Communication manager has obtained utilization widely as a kind of signal centre of supervisory control system at various industrial automation systems, in some occasions high to the communication reliability requirement, can adopt the active and standby connected mode of communication manager usually.At present, the method that the active and standby switching of communication manager is generally adopted is that main frame regularly sends safety (heartbeat) message and real time data database data to standby host, when main frame occurs when unusual, standby host does not detect safety (heartbeat) message of main frame, and communication manager switches to standby host by main frame and works on.Because the data volume of real time data database data is huger, can not send to standby host by main frame very continually, and active and standby machine operating state is inconsistent when switching, causes that system is in no monitor state in switching time, can't accomplish seamless switching, bury potential safety hazard to system.
The utility model content
The shortcoming that the purpose of this utility model is to overcome above-mentioned prior art provides the device of the active and standby machine seamless switching of a kind of communication manager with not enough.
For reaching above-mentioned purpose, the utility model adopts following technical scheme:
The device of the active and standby machine seamless switching of a kind of communication manager, described device comprises: the communication management machine host, the communication manager standby host, described communication management machine host and communication manager standby host interconnect by active and standby communication link, described communication management machine host and communication manager standby host include several physical communication interface, packet sending and receiving buffer area unit, the real time data library unit, during described communication management machine host operate as normal, the physical communication interface of communication management machine host is communicated with downgoing communication medium and uplink communication media signal, the physical communication interface of main frame is connected with the packet sending and receiving buffer area unit of communication management machine host and the packet sending and receiving buffer area unit of communication manager standby host respectively, the interior real time data library unit of packet sending and receiving buffer area unit in the main frame and main frame is connected, the interior real time data library unit of packet sending and receiving buffer area unit in the standby host and standby host is connected, after the communication manager standby host switched to main frame, the physical communication interface of communication manager standby host was communicated with downgoing communication medium and uplink communication media signal.
Described communication management machine host and communication manager standby host also comprise three software units respectively: communication medium device management unit, downgoing communication medium stipulations processing unit and uplink communication medium stipulations processing unit, described several physical communication interface and communication medium device management unit interconnect, and described communication medium device management unit and packet sending and receiving buffer area unit interconnect;
Described packet sending and receiving buffer area unit, downgoing communication medium stipulations processing unit, real time data library unit and uplink communication medium stipulations processing unit interconnect successively; The output of described uplink communication medium stipulations processing unit is connected with packet sending and receiving buffer area unit;
Described uplink communication medium stipulations processing unit and downgoing communication medium stipulations processing unit interconnect by information order mechanism.
Described physical communication interface comprises that physical communication interface receives buffering area and physical communication interface sends buffering area, is used for receiving and sending message information;
When communication medium device management unit that described communication medium device management unit is the communication management machine host, be used to be in charge of the transmitting-receiving of the actual message of all physical communication interface on the communication manager; Also be used for from packet sending and receiving buffer area unit taking-up message and heading information, and put into corresponding physical communication interface transmission buffering area after removing heading information; Put into described packet sending and receiving buffer area unit after also being used for regularly the message that receives buffering area from physical communication interface being added heading information;
When communication medium device management unit that described communication medium device management unit is the communication manager standby host, be used to be in charge of the actual message reception and transmission of active and standby communication link, on the uplink and downlink media channel that other configuration is used, the heading type of these passages that will take out from packet sending and receiving buffer area unit is the message that sends and abandons or do not handle;
Described packet sending and receiving buffer area unit, be used to store the message that transmits from described communication medium device management unit and add heading information, also be used to store and handle the message of forming the back from described downgoing communication medium stipulations processing unit and described uplink communication medium stipulations processing unit according to stipulations and add heading information;
Described downgoing communication medium stipulations processing unit, be used for according to the descending media channel link number of configuration use and the downgoing communication medium stipulations handling procedure of stipulations generation respective numbers, between described downgoing communication medium stipulations handling procedure is to move communication protocol independently of each other, takes out the message belong to this program respectively and press professional etiquette and handle approximately and resolve and data are saved in the real time data library unit from described packet sending and receiving buffer area unit; Also be used for handling and put into packet sending and receiving buffer area unit after the message of forming the back adds heading information, send for described communication medium device management unit according to descending stipulations;
Described real time data library unit is used to store the data of pressing after professional etiquette is handled parsing approximately;
Described uplink communication medium stipulations processing unit, be used for according to the up media channel link number of configuration use and the uplink communication medium stipulations handling procedure of stipulations generation respective numbers, between described uplink communication medium stipulations handling procedure is to move communication protocol independently of each other, takes out the message that belongs to this program respectively and allow downgoing communication medium stipulations processing unit handle by up stipulations processing or by information order mechanism from described packet sending and receiving buffer area unit; Also be used for taking out data, handle by up stipulations and put into packet sending and receiving buffer area unit after back composition message adds heading information, send for described communication medium device management unit from the real time data library unit;
Described several communication interfaces and communication medium device management unit interconnect, and described communication medium device management unit and packet sending and receiving buffer area unit interconnect;
Described packet sending and receiving buffer area unit, downgoing communication medium stipulations processing unit, real time data library unit and uplink communication medium stipulations processing unit interconnect successively; The output of described uplink communication medium stipulations processing unit is connected with packet sending and receiving buffer area unit;
Described uplink communication medium stipulations processing unit and downgoing communication medium stipulations processing unit interconnect by information order mechanism.
Described heading information comprises message source id, type of message, message grade, message purpose id and message length, and described message source id sign produces the functional unit or the physical channel port of message; Described type of message sign message is transmission, reception or event handling; The priority that described message class letter message is handled; Described message purpose id sign receives the functional unit or the physical channel port of message; The data length of described message length sign message.
The course of work of the device of the active and standby machine seamless switching of described communication manager may further comprise the steps:
(1) the communication medium device management unit of communication management machine host and communication manager standby host is provided with the messaging parameter of each physical communication interface, whether basis is the communication management machine host respectively, select different operational modes, if be the communication management machine host, the then reception and the transmission of message on the physical communication interface of all configuration uses of its communication medium device management unit normal management, if be the communication manager standby host, then its communication medium device management unit is only managed the reception and the transmission of message on the active and standby communication link;
(2) the communication medium device management unit of communication management machine host sends to the packet sending and receiving buffer area unit of communication management machine host and the packet sending and receiving buffer area unit of communication manager standby host simultaneously with the message data that receives in uplink communication medium and the downgoing communication medium;
(3) after the packet sending and receiving buffer area of communication management machine host is received message data, the downgoing communication medium stipulations handling procedure that the downgoing communication medium stipulations processing unit of message data entry communication supervisor main frame and the descending media channel link number that uses according to configuration and stipulations generate respective numbers, and the message data that will belong to this program is pressed professional etiquette and is handled approximately and resolve and data are saved in the real time data library unit, the uplink communication medium stipulations handling procedure that uplink communication medium stipulations processing unit takes out data from the real time data library unit and the up media channel link number that uses according to configuration and stipulations generate respective numbers, the message that will belong to this program allows downgoing communication medium stipulations processing unit handle by up stipulations processing or by information order mechanism, handle and put into packet sending and receiving buffer area unit after back composition message adds heading information, send for described communication medium device management unit, simultaneously, after the communication manager standby host receives message data, the communication medium device management unit of communication manager standby host is taken out the message that will send to up or downgoing communication link and is abandoned from its packet sending and receiving buffer area unit, promptly the communication medium administrative unit of communication manager standby host and packet sending and receiving buffer area unit imitate the communication medium administrative unit of communication management machine host and the operating state of packet sending and receiving buffer area unit fully;
(4) the communication manager standby host is periodically accepted the safety message or the heartbeat message of communication management machine host from active and standby communication link;
(5) when continuous three timings of communication manager standby host do not receive the safety message of communication management machine host or heartbeat message in the cycle, be about to the communication manager standby host and switch to the communication management machine host, at this moment, only the operating state of the communication medium device management unit of communication manager standby host is switched to the operating state of the communication medium device management unit of communication management machine host, i.e. the link of all physical communication interface on the communication medium device management unit normal management communication manager standby host of communication manager standby host.
Compared with prior art, the utlity model has following advantage and beneficial effect:
The utility model adopts the active and standby machine seamless switching device of communication manager, be engraved in the operating state of analog communication supervisor main frame when guaranteeing the communication manager standby host, the active and standby machine operating state of communication manager is consistent, and the communication management machine host is as long as send the information that receives on the current up or downgoing communication media link to the communication manager standby host, data volume is little, it is good in real time to transmit, can reach the purpose of the active and standby machine seamless switching of communication manager, communication reliability and the continuity of guaranteeing important monitoring occasion system had great importance.
Description of drawings
Fig. 1 is the structural representation of the device of the active and standby machine seamless switching of a kind of communication manager of the utility model.
Fig. 2 is the communication management machine host of device shown in Figure 1 or the structural representation of communication manager standby host.
Fig. 3 is the functional schematic of the descending stipulations media processing units of embodiment 1.
Fig. 4 is the functional schematic of the up stipulations media processing units of embodiment 1.
Fig. 5 is that the heading of embodiment 1 is formed the form schematic diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, the device of the active and standby machine seamless switching of a kind of communication manager, this device comprise communication management machine host, communication manager standby host, and described communication management machine host and communication manager standby host interconnect by active and standby communication link.
As shown in Figure 2, the communication management machine host has identical structure with the communication manager standby host, and its structure comprises:
Described structure comprises several physical communication interface, communication medium device management unit, packet sending and receiving buffer area unit, downgoing communication medium stipulations processing unit, real time data library unit and uplink communication medium stipulations processing unit;
Described physical communication interface comprises that physical communication interface receives buffering area and physical communication interface sends buffering area, is used for receiving and sending message information;
When communication medium device management unit that described communication medium device management unit is the communication management machine host, be used to be in charge of the transmitting-receiving of the actual message of all physical communication interface on the communication manager; Also be used for from packet sending and receiving buffer area unit taking-up message and heading information, and put into corresponding physical communication interface transmission buffering area after removing heading information; Put into described packet sending and receiving buffer area unit after also being used for regularly the message that receives buffering area from physical communication interface being added heading information;
When communication medium device management unit that described communication medium device management unit is the communication manager standby host, be used to be in charge of the actual message reception and transmission of active and standby communication link, on the uplink and downlink media channel that other configuration is used, the heading type of these passages that will take out from packet sending and receiving buffer area unit is the packet loss that sends or does not handle;
Described packet sending and receiving buffer area unit, be used to store the message that transmits from described communication medium device management unit and add heading information, also be used to store and handle the message of forming the back from described downgoing communication medium stipulations processing unit and described uplink communication medium stipulations processing unit according to stipulations and add heading information;
Described downgoing communication medium stipulations processing unit, be used for according to the descending media channel link number of configuration use and the downgoing communication medium stipulations handling procedure of stipulations generation respective numbers, between described downgoing communication medium stipulations handling procedure is to move communication protocol independently of each other, takes out the message belong to this program respectively and press professional etiquette and handle approximately and resolve and data are saved in the real time data library unit from described packet sending and receiving buffer area unit; Also be used for handling and put into packet sending and receiving buffer area unit after the message of forming the back adds heading information, send for described communication medium device management unit according to descending stipulations;
Described real time data library unit is used to store the data of pressing after professional etiquette is handled parsing approximately;
Described uplink communication medium stipulations processing unit, be used for according to the up media channel link number of configuration use and the uplink communication medium stipulations handling procedure of stipulations generation respective numbers, between described uplink communication medium stipulations handling procedure is to move communication protocol independently of each other, takes out the message that belongs to this program respectively and allow downgoing communication medium stipulations processing unit handle by up stipulations processing or by information order mechanism from described packet sending and receiving buffer area unit; Also be used for taking out data, handle by up stipulations and put into packet sending and receiving buffer area unit after back composition message adds heading information, send for described communication medium device management unit from the real time data library unit;
Described several communication interfaces and communication medium device management unit interconnect, and described communication medium device management unit and packet sending and receiving buffer area unit interconnect;
Described packet sending and receiving buffer area unit, downgoing communication medium stipulations processing unit, real time data library unit and uplink communication medium stipulations processing unit interconnect successively; The output of described uplink communication medium stipulations processing unit is connected with packet sending and receiving buffer area unit;
Described uplink communication medium stipulations processing unit intercoms by information order mechanism mutually with downgoing communication medium stipulations processing unit.
As shown in Figure 3, downgoing communication medium stipulations processing unit is according to the descending media channel link number of configuration use and the downgoing communication medium stipulations handling procedure of stipulations generation respective numbers, move communication protocol independently of each other between each downgoing communication medium stipulations handling procedure, from packet sending and receiving buffer area unit, take out the message that belongs to this program respectively and handle parsing and data are saved in the real time data library unit by stipulations; Form according to stipulations and to put into packet sending and receiving buffer area unit after message adds heading information, send for described communication medium device management unit.
As shown in Figure 4, uplink communication medium stipulations processing unit is according to the up media channel link number of configuration use and the uplink communication medium stipulations handling procedure of stipulations generation respective numbers, move communication protocol independently of each other between each uplink communication medium stipulations handling procedure, read the data point that to transmit of each self-configuring respectively and from the real time data library unit, take out data, form by up stipulations and put into packet sending and receiving buffer area unit after message adds heading information; Taking out the message that belongs to this program from packet sending and receiving buffer area unit handles by stipulations processing or use information order mechanism downgoing communication medium stipulations processing unit.
Described heading information as shown in Figure 5, comprise message source id, type of message, message grade, message purpose id, message length etc., wherein, message source id sign produces the functional unit or the physical channel port of message, type of message sign message is transmission, reception or event handling, the priority that message class letter message is handled, message purpose id sign receives the functional unit or the physical channel port of message, the data length of message length sign message.
The course of work of the device of the active and standby machine seamless switching of described communication manager may further comprise the steps:
(1) the communication medium device management unit of communication management machine host and communication manager standby host is provided with each physical communication interface messaging parameter, whether basis is the communication management machine host respectively, select different operational modes, if be the communication management machine host, the then reception and the transmission of message on the physical communication interface of all configuration uses of its communication medium device management unit normal management, if be the communication manager standby host, then its communication medium device management unit is only managed the reception and the transmission of message on the active and standby communication link;
(2) the communication medium device management unit of communication management machine host sends to the packet sending and receiving buffer area unit of communication management machine host and the packet sending and receiving buffer area unit of communication manager standby host simultaneously with the message data that receives in uplink communication medium and the downgoing communication medium;
(3) after the packet sending and receiving buffer area of communication management machine host is received message data, the downgoing communication medium stipulations handling procedure that the downgoing communication medium stipulations processing unit of message data entry communication supervisor main frame and the descending media channel link number that uses according to configuration and stipulations generate respective numbers, and the message data that will belong to this program is pressed professional etiquette and is handled approximately and resolve and data are saved in the real time data library unit, the uplink communication medium stipulations handling procedure that uplink communication medium stipulations processing unit takes out data from the real time data library unit and the up media channel link number that uses according to configuration and stipulations generate respective numbers, the message that will belong to this program allows downgoing communication medium stipulations processing unit handle by up stipulations processing or by information order mechanism, handle and put into packet sending and receiving buffer area unit after back composition message adds heading information, send for described communication medium device management unit, simultaneously, after the communication manager standby host receives message data, the communication medium device management unit of communication manager standby host is taken out the message that will send to up or downgoing communication link and is abandoned from its packet sending and receiving buffer area unit, promptly the communication medium administrative unit of communication manager standby host and packet sending and receiving buffer area unit imitate the communication medium administrative unit of communication management machine host and the operating state of packet sending and receiving buffer area unit fully;
(4) the communication manager standby host is periodically accepted the safety message or the heartbeat message of communication management machine host from active and standby communication link;
(5) when continuous three timings of communication manager standby host do not receive the safety message of communication management machine host or heartbeat message in the cycle, be about to the communication manager standby host and switch to the communication management machine host, at this moment, only the operating state of the communication medium device management unit of communication manager standby host is switched to the operating state of the communication medium device management unit of communication management machine host, i.e. the link of all physical communication interface on the communication medium device management unit normal management communication manager standby host of communication manager standby host.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (2)
1. the device of the active and standby machine seamless switching of communication manager, it is characterized in that, described device comprises: the communication management machine host, the communication manager standby host, described communication management machine host and communication manager standby host interconnect by active and standby communication link, described communication management machine host and communication manager standby host include several physical communication interface, packet sending and receiving buffer area unit, the real time data library unit, during described communication management machine host operate as normal, the physical communication interface of communication management machine host is communicated with downgoing communication medium and uplink communication media signal, the physical communication interface of main frame is connected with the packet sending and receiving buffer area unit of communication management machine host and the packet sending and receiving buffer area unit of communication manager standby host respectively, the interior real time data library unit of packet sending and receiving buffer area unit in the main frame and main frame is connected, the interior real time data library unit of packet sending and receiving buffer area unit in the standby host and standby host is connected, after the communication manager standby host switched to main frame, the physical communication interface of communication manager standby host was communicated with downgoing communication medium and uplink communication media signal.
2. the device of the active and standby machine seamless switching of a kind of communication manager according to claim 1 is characterized in that, described physical communication interface comprises that physical communication interface receives buffering area and physical communication interface sends buffering area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206623183U CN202085175U (en) | 2010-12-16 | 2010-12-16 | Device for seamless switching between communication management host unit and communication management standby unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206623183U CN202085175U (en) | 2010-12-16 | 2010-12-16 | Device for seamless switching between communication management host unit and communication management standby unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202085175U true CN202085175U (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206623183U Expired - Fee Related CN202085175U (en) | 2010-12-16 | 2010-12-16 | Device for seamless switching between communication management host unit and communication management standby unit |
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| Country | Link |
|---|---|
| CN (1) | CN202085175U (en) |
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2010
- 2010-12-16 CN CN2010206623183U patent/CN202085175U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20181216 |