CN106790626B - Reliable distributed alarm implementation method - Google Patents
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- CN106790626B CN106790626B CN201611266170.XA CN201611266170A CN106790626B CN 106790626 B CN106790626 B CN 106790626B CN 201611266170 A CN201611266170 A CN 201611266170A CN 106790626 B CN106790626 B CN 106790626B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a method for realizing a reliable distributed alarm system, which is applied to a central station of a subway and a comprehensive monitoring system of a plurality of stations, wherein the distributed alarm system comprises a server and a workstation, when an alarm data source comes from a certain station, the alarm data source of the station pushes alarm notification information to a station server side of the corresponding station, and after receiving the alarm notification information, the station server side pushes the alarm data to the corresponding vehicle-mounted server and the central server; the station server forwards the alarm data to the station client through the message communication middleware module arranged in the station server, and the central server forwards the alarm data to the central client through the message communication middleware module arranged in the central server. The invention generates and transmits the alarm in a distributed mode, realizes that the station client can display the alarm data of the station, and the central client inquires and manages the alarm in a mode of connecting to the station server.
Description
Technical Field
The invention relates to the technical field of comprehensive monitoring, in particular to a reliable implementation method of a distributed alarm system.
Background
The comprehensive monitoring system is deployed in subway stations and subway control centers (also called central or central station or line network operation control center OCC). The comprehensive monitoring system collects alarm data of station electromechanical equipment, displays the alarm data at a station workstation, and meanwhile, the control center can acquire the alarm data of each station through a station server to perform centralized display, wherein the alarm data needs to meet the following requirements: the alarm data can be confirmed and closed, the alarm data of the station and the central display are consistent, the comprehensive monitoring system requires alarm real-time display and the like, and the station can be disconnected with the control center to realize off-line work.
The subway alarm system has the concepts of a central center and stations, the central center can display alarm information in a centralized mode, each station can also display alarm data of the station independently, based on the requirements, the centralized alarm system is not suitable for the situation, and if the central center is used for generating the alarm mode in a centralized mode, the stations cannot work normally when the central center and the stations are off-line. And if a layering mode is adopted, the station generates an alarm and uploads the alarm to the central server in a centralized manner, and the central server manages the alarm in a unified manner, so that the running pressure of the center is increased, and meanwhile, the multi-layer communication operation is repeated, and the expansion is not facilitated.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a reliable implementation method of a distributed alarm system, which generates and transmits alarms in a distributed mode, so that a station client can display alarm data of the station, and a central client performs alarm query and management operation in a mode of being connected to a station server.
The purpose of the invention is realized by adopting the following technical scheme:
a reliable method for realizing distributed alarm system is applied to a central station of subway and a comprehensive monitoring system of a plurality of stations, the distributed alarm system comprises a server and a workstation, wherein the server is provided with an alarm server and a message communication middleware module; the workstation is provided with an alarm client; the alarm client is connected with the alarm server through a message communication middleware module;
each station is provided with at least one server and a plurality of workstations; the server of the station and the alarm server deployed in the server of the station are respectively called a station server and a station server; the alarm client deployed by the workstation of the station is called a station client;
the central station is provided with at least one server and a plurality of workstations; the server of the central station and the alarm server deployed in the server of the central station are respectively called a central server and a central server; the alarm client deployed by the workstation of the central station is called a central client;
the comprehensive monitoring system collects alarm data of electromechanical equipment of each station, when an alarm data source comes from a certain station, the alarm data source of the station pushes alarm notification information to a station server side of the corresponding station, and after the station server side receives the alarm notification information, the station server side pushes the alarm data to a corresponding vehicle-mounted server and a central server;
the station server forwards the alarm data to the station client through the message communication middleware module arranged in the station server, and the central server forwards the alarm data to the central client through the message communication middleware module arranged in the central server.
The comprehensive monitoring system also collects alarm data of a central station, when an alarm data source comes from the central station, the alarm data source of the central station pushes alarm notification information to a central server, and the central server pushes the alarm data to a central server after receiving the alarm notification information; the central server forwards the alarm data to the central client through a message communication middleware module arranged in the central server.
The message communication middleware module is a message communication middleware module based on a subscription/publishing mode.
The station server synchronizes the alarm data of the station server with the alarm data of the corresponding station client, and the synchronization method comprises the following steps:
step 11, the station client tries to establish connection with a corresponding station server to subscribe a theme, the theme is an alarm notification, if the theme is subscribed successfully, step 15 is executed, otherwise step 13 is executed;
step 12, the station client side starts to try to establish connection with the corresponding station server side, if the connection is successful, step 15 is executed, otherwise step 14 is executed;
step 13, the station client loads alarm data from the database of the corresponding station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 11 is continuously tried to be completed until the theme subscription is successful, and then step 12 is executed;
step 14, the station client loads alarm data from the database of the corresponding station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 12 is continuously tried to be completed until the station client is successfully connected with the corresponding station server, and then step 15 is executed;
step 15, the station client sends an alarm data synchronization request to the corresponding station server, the station server responds to the alarm data synchronization request and synchronously sends the alarm data to the station client, the station client displays the alarm data in a corresponding interface, and then step 16 is executed;
step 16, after receiving the alarm notification message, the station server issues the alarm notification message to the corresponding station server, and then the station server forwards the alarm notification message to all the station clients subscribing the theme in step 11, and then step 17 is executed;
and step 17, the operator performs alarm operation on the alarm notification message received by any station client, the alarm notification message subjected to the alarm operation is called a changed alarm notification message, the station client sends the changed alarm notification message to a station server corresponding to the station client, the station server updates a database of a station corresponding to the station client, the changed alarm notification message received by the station client is sent to a station server corresponding to the station server, the station server forwards the changed alarm notification message to all station clients subscribing the theme in step 11, and all station clients refresh interfaces according to the changed alarm notification message received by the station clients.
In the alarm data synchronization process of the station server and the corresponding station client, when the step 15 to the step 17 are executed, the station client sends heartbeat information to the corresponding station server at regular time, and when the disconnection between the station client and the station server is found, the operation of the step 15 to the step 17 is executed again after the reconnection.
The alarm data of the central server and the central client are synchronized, and the synchronizing method comprises the following steps:
step 21, the central client tries to establish connection with the central server to subscribe a theme, the theme is an alarm notification, if the theme is subscribed successfully, step 25 is executed, otherwise step 23 is executed;
step 22, the central client side starts to try to establish connection with the central server side, if the connection is successful, step 25 is executed, otherwise step 24 is executed;
step 23, the central client loads the alarm data from the database of the central station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 21 is continuously tried to be completed until the topic subscription is successful, and then step 22 is executed;
step 24, the central client loads alarm data from the database of the central station and displays the alarm data in a corresponding interface, meanwhile, the operation of step 22 is continuously tried to be completed until the central client is successfully connected with the central server, and then step 25 is executed;
step 25, the central client sends an alarm data synchronization request to the central server, the central server responds to the alarm data synchronization request and synchronously sends the alarm data to the central client, the central client displays the alarm data in a corresponding interface, and then step 26 is executed;
step 26, after the central server sends the alarm notification message, forwarding the alarm notification message to all the central clients subscribed with the theme in step 21, and then executing step 27;
and 27, the operator performs alarm operation on the alarm notification message received by any central client, the alarm notification message subjected to the alarm operation is called a changed alarm notification message, the central client simultaneously sends the changed alarm notification message to the central server, the central server updates the database of the central station and then sends the received changed alarm notification message to the central server, the central server forwards the changed alarm notification message to all the central clients subscribing the theme in the step 21, and all the central clients refresh the interface again according to the received changed alarm notification message.
Preferably, in the alarm data synchronization process between the central server and the central client, when step 25 to step 27 are executed, the central client sends heartbeat information to the central server at regular time, and when the central client is disconnected from the central server, the operations of step 25 to step 27 are executed again after reconnection.
Preferably, in step 27, the center client further sends the changed alarm notification message to a station server corresponding to the station that sends the alarm notification message to the center server, the station server updates the database of the station corresponding to the station, and then sends the changed alarm notification message received by the station server to the station server corresponding to the station server, the station server forwards the changed alarm notification message to all the station clients subscribing to the theme in step 11, and all the station clients refresh the interface again according to the changed alarm notification message received by the station clients.
Preferably, the distributed alarm system further comprises a plan server, wherein the station server is connected to the plan server of the station corresponding to the station server to call an interface for executing a plan to realize the full-automatic alarm operation of the station; the central server is connected to the plan server of the central station to call an interface for executing a plan so as to realize the full-automatic alarm operation of the subway.
Preferably, each station and the central station are configured with two mutually redundant hot backup servers.
Compared with the prior art, the invention has the beneficial effects that:
1. the method comprises the steps that a distributed mode is adopted for generating and transmitting alarms (namely alarms), stations generate and manage alarm data of the stations, station client sides can display the alarm data of the stations, a central client side is connected to a station server for carrying out alarm query and management operation, when the central stations and the stations are in an off-line state, the stations can independently manage the alarm data of the stations, the stations synchronize the alarm data of the stations to the central client side until the network is recovered, and the central stations and the station alarm information are kept consistent;
2. the distributed alarm system can also be used for the transverse and longitudinal extension of the alarm system, stations can be dynamically added, and alarm data is added into a central station; an operation control center with a plurality of lines can be established, and a client of the operation control center can directly communicate with station alarm systems of different lines and synchronize the station alarm;
3. the alarm system with balanced load is realized, the alarm takes a station as a unit, the expansion of the alarm system is easy, the architecture mode of one center or a plurality of centers can be realized, and the real-time performance of the alarm is improved.
Drawings
FIG. 1 is a network architecture diagram of a method of implementing a distributed alarm system of the present invention;
FIG. 2 is a flow chart of client and server synchronization according to the present invention;
FIG. 3 is a graph illustrating the migration of alarm colors during an alarm operation according to the present invention;
fig. 4 is a transition diagram of an alarm state in an alarm operation according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
referring to fig. 1, a method for implementing a reliable distributed Alarm system is applied to a central station of a subway and a comprehensive monitoring system of multiple stations, and the distributed Alarm system includes a server and a workstation, where the server is deployed with an Alarm service end (Alarm Agent), an ICE (object-oriented RPC messaging middleware, abbreviated as messaging middleware) module, and a database; an Alarm Client (Alarm Client) is deployed in the workstation; the alarm client is connected with the alarm server through the message communication middleware module; in the invention, for the situation that the warning client side applicable to the subway actively pushes the message to a plurality of warning service sides, the message communication middleware modules deployed at the station and the central station all adopt an ICE Strom (message communication middleware based on a subscription/release mode), of course, the message communication middleware can also adopt CORBA, WebService, message queue, WCF, Remoting and the like to realize, or other network communication protocols are used to realize the communication between the warning client side and the warning service sides, and the network communication protocols include but are not limited to TCP/IP, HTTP, UDP and the like. In addition, the server and the workstation may employ a Unix architecture server, an x86 architecture server, a cloud computing server, an industrial personal computer, a PC, a portable computing device, a mobile device, or other computing devices having computing capabilities.
In the preferred embodiment of the invention, each station is provided with a hot backup server and a plurality of workstations which are mutually redundant; the server of the station and the alarm server deployed in the server of the station are respectively called as a station server and a station server; an alarm client deployed by a workstation of a station is called a station client; the central station is also provided with a hot backup server and a plurality of workstations which are mutually redundant; the server of the central station and the alarm server deployed in the server of the central station are respectively called a central server and a central server; the alert client deployed by the workstation of the central station is referred to as the central client.
The comprehensive monitoring system collects alarm data of electromechanical equipment of each station, when an alarm data source comes from a certain station, the alarm data source of the station pushes alarm notification information to a station server side of the corresponding station, and the station server side pushes the alarm data to a corresponding vehicle-mounted server and a corresponding central server after receiving the alarm notification information (namely, the alarm data which can perform corresponding alarm operation at a station client side and a central client side); the station server transmits the alarm data to the station client through the message communication middleware module arranged in the station server, and the central server transmits the alarm data to the central client through the message communication middleware module arranged in the central server. The various operations described above generate event records that are inserted into a database to form an event table.
The number of communication channels between the alarm client and the alarm server is 2, and one communication channel is directly connected with the alarm server and is used for synchronizing alarm data and updating alarm operation information. Still another is to establish a connection with the alert server, subscribe to the topic, and receive alert notification messages. In order to solve the data synchronization problem, the procedure shown in fig. 2 is strictly followed, wherein the starting sequence of the client and the server is arbitrary.
For the alarm data synchronization of the station server and the corresponding station client, the synchronization method comprises the following steps:
step 11, the station client tries to establish connection with the corresponding station server, a theme is subscribed and taken as an alarm notification, if the theme is subscribed successfully, step 15 is executed, otherwise step 13 is executed;
step 12, the station client side starts to try to establish connection with the corresponding station server side, if the connection is successful, step 15 is executed, otherwise step 14 is executed;
step 13, the station client loads alarm data from the database of the corresponding station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 11 is continuously tried to be completed until the theme subscription is successful, and then step 12 is executed;
step 14, the station client loads alarm data from the database of the corresponding station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 12 is continuously tried to be completed until the station client is successfully connected with the corresponding station server, and then step 15 is executed;
step 15, the station client sends an alarm data synchronization request to the corresponding station server, the station server responds to the alarm data synchronization request and synchronously sends the alarm data to the station client, the station client displays the alarm data in a corresponding interface, and then step 16 is executed;
step 16, after receiving the alarm notification message, the station server issues the alarm notification message to the corresponding station server, and then the station server forwards the alarm notification message to all the station clients subscribing the theme in step 11, and then step 17 is executed;
and step 17, the operator performs alarm operation on the alarm notification message received by any station client, the alarm notification message subjected to the alarm operation is called a changed alarm notification message, the station client sends the changed alarm notification message to a station server corresponding to the station client, the station server updates a database of a station corresponding to the station client, the changed alarm notification message received by the station client is sent to a station server corresponding to the station server, the station server forwards the changed alarm notification message to all station clients subscribing the theme in step 11, and all station clients refresh interfaces according to the changed alarm notification message received by the station clients.
It should be noted that: in the process of synchronizing the alarm data of the station server and the corresponding station client, when the step 15 to the step 17 are executed, the station client sends heartbeat information to the corresponding station server at regular time, and when the disconnection between the station client and the station server is found, the operation of the step 15 to the step 17 is executed again after the reconnection.
As for the method for synchronizing the alarm data of the central server and the central client, when the central station obtains the alarm data of the station, the alarm data of the central server and the central client are also synchronized, and meanwhile, the change of the alarm notification message at the central client is also synchronized to the station generating the alarm data source, that is, the alarm data of the station server corresponding to the station generating the alarm data source and the alarm data of the station client are also synchronized, as shown in fig. 1 and fig. 2, the method for synchronizing the alarm data of the central server and the central client includes the following steps:
step 21, the central client tries to establish connection with the central server to subscribe the theme, the theme is an alarm notification, if the theme is subscribed successfully, step 25 is executed, otherwise step 23 is executed;
step 22, the central client side starts to try to establish connection with the central server side, if the connection is successful, step 25 is executed, otherwise step 24 is executed;
step 23, the central client loads the alarm data from the database of the central station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 21 is continuously tried to be completed until the topic subscription is successful, and then step 22 is executed;
step 24, the central client loads alarm data from the database of the central station and displays the alarm data in a corresponding interface, meanwhile, the operation of step 22 is continuously tried to be completed until the central client is successfully connected with the central server, and then step 25 is executed;
step 25, the central client sends an alarm data synchronization request to the central server, the central server responds to the alarm data synchronization request and synchronously sends the alarm data to the central client, the central client displays the alarm data in a corresponding interface, and then step 26 is executed;
step 26, after the central server sends the alarm notification message, forwarding the alarm notification message to all the central clients subscribed with the theme in step 21, and then executing step 27;
step 27, the operator performs an alarm operation on the alarm notification message received by any central client, the alarm notification message after the alarm operation is performed is called a modified alarm notification message, the central client simultaneously sends the modified alarm notification message to the central server, the central server updates the database of the central station and then sends the modified alarm notification message received by the central client to the central server, the central server forwards the modified alarm notification message to all the central clients subscribing the theme in step 21, and all the central clients refresh the interface again according to the modified alarm notification message received by the central client; the central client side also sends the changed alarm notification message to a station server side corresponding to a station (i.e. a station generating an alarm data source) sending the alarm notification message to the central server, the station server side updates a database of the station corresponding to the station server side, and then sends the changed alarm notification message received by the station server side to the station server corresponding to the station server side, the station server forwards the changed alarm notification message to all station client sides subscribing the theme in step 11, and all station client sides refresh the interface again according to the changed alarm notification message received by the station client sides.
It should be noted that: in the process of synchronizing the alarm data of the central server and the central client, the central client sends heartbeat information to the central server at regular time when the steps 25 to 27 are executed, and after the central client is disconnected from the central server, the operations of the steps 25 to 27 are executed again after the central client is reconnected.
The comprehensive monitoring system also collects alarm data of the central station, when the alarm data source comes from the central station, the alarm data source of the central station pushes alarm notification information to the central server, and the central server only pushes the alarm data to the central server after receiving the alarm notification information; the central server forwards the alarm data to the central client through a message communication middleware module arranged in the central server. At this time, the process of synchronizing the alarm data of the central server and the central client does not include sending a corresponding modified alarm notification message to the station server, and the process is not described herein again.
In addition, the distributed alarm system also comprises a plan server, and the plan server can be independently deployed in a server or a corresponding station server or a central server. The station server is connected to the plan server of the station corresponding to the station server to call an interface for executing a plan so as to realize the full-automatic alarm operation of the station; the central server is connected to the plan server of the central station to call an interface for executing a plan so as to realize the full-automatic alarm operation of the subway.
Referring to fig. 3, when an alarm is generated, a flashing state is displayed on an interface (for example, an alarm bar) of a client (a station client or/and a center client), alarm colors are respectively displayed as four colors of yellow, orange, purple and red from the lowest level to the highest level according to alarm levels, and after an operator confirms the alarm, the flashing state of the alarm information disappears and the colors are not changed. When the alarm information is automatically closed or manually closed, the alarm color is displayed as green. The alarm operation includes: the states of alarm, alarm confirmation and alarm closing are shown in fig. 4.
It should be noted that: in the above preferred embodiment of the present invention, the operation is performed only when an alarm occurs at one station among a plurality of stations, and in fact, the case where alarms occur at two or more stations simultaneously or non-simultaneously is similar to the above case, and in this case, except that the clients of the two or more stations display the corresponding alarm notification messages, the alarm notification messages are all displayed on the central client in a centralized manner. Meanwhile, the invention is not only suitable for a distributed alarm system formed by a plurality of stations at the center in a subway line; the distributed warning system is also suitable for a system structure that one subway line comprises a plurality of centers to respectively and centrally manage a plurality of stations, one subway line comprises a plurality of centers to cross manage a plurality of stations, and a distributed warning system that one subway line is provided with one or more network centers and manages the plurality of subway line centers through the one or more network centers.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (7)
1. A method for realizing reliable distributed alarm system is characterized in that the method is applied to a comprehensive monitoring system for a central station and a plurality of stations of a subway, the distributed alarm system comprises a server and a workstation, wherein the server is provided with an alarm server and a message communication middleware module; the workstation is provided with an alarm client; the alarm client is connected with the alarm server through a message communication middleware module;
each station is provided with at least one server and a plurality of workstations; the server of the station and the alarm server deployed in the server of the station are respectively called a station server and a station server; the alarm client deployed by the workstation of the station is called a station client;
the central station is provided with at least one server and a plurality of workstations; the server of the central station and the alarm server deployed in the server of the central station are respectively called a central server and a central server; the alarm client deployed by the workstation of the central station is called a central client;
the comprehensive monitoring system collects alarm data of electromechanical equipment of each station, when an alarm data source comes from a certain station, the alarm data source of the station pushes alarm notification information to a station server side of the corresponding station, and after the station server side receives the alarm notification information, the station server side pushes the alarm data to a corresponding vehicle-mounted server and a central server;
the station server forwards alarm data to a station client through a message communication middleware module arranged in the station server, and the central server forwards the alarm data to a central client through a message communication middleware module arranged in the central server;
the message communication middleware module is based on a subscription/publishing mode;
each station and the central station are provided with two mutually redundant hot backup servers;
the station server synchronizes the alarm data of the station server with the alarm data of the corresponding station client, and the synchronization method comprises the following steps:
step 11, the station client tries to establish connection with a corresponding station server to subscribe a theme, the theme is an alarm notification, if the theme is subscribed successfully, step 15 is executed, otherwise step 13 is executed;
step 12, the station client side starts to try to establish connection with the corresponding station server side, if the connection is successful, step 15 is executed, otherwise step 14 is executed;
step 13, the station client loads alarm data from the database of the corresponding station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 11 is continuously tried to be completed until the theme subscription is successful, and then step 12 is executed;
step 14, the station client loads alarm data from the database of the corresponding station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 12 is continuously tried to be completed until the station client is successfully connected with the corresponding station server, and then step 15 is executed;
step 15, the station client sends an alarm data synchronization request to the corresponding station server, the station server responds to the alarm data synchronization request and synchronously sends the alarm data to the station client, the station client displays the alarm data in a corresponding interface, and then step 16 is executed;
step 16, after receiving the alarm notification message, the station server issues the alarm notification message to the corresponding station server, and then the station server forwards the alarm notification message to all the station clients subscribing the theme in step 11, and then step 17 is executed;
and step 17, the operator performs alarm operation on the alarm notification message received by any station client, the alarm notification message subjected to the alarm operation is called a changed alarm notification message, the station client sends the changed alarm notification message to a station server corresponding to the station client, the station server updates a database of a station corresponding to the station client, the changed alarm notification message received by the station client is sent to a station server corresponding to the station server, the station server forwards the changed alarm notification message to all station clients subscribing the theme in step 11, and all station clients refresh interfaces according to the changed alarm notification message received by the station clients.
2. The method as claimed in claim 1, wherein the integrated monitoring system further collects alarm data of a central station, when the alarm data source is from the central station, the alarm data source of the central station pushes alarm notification information to the central server, and after receiving the alarm notification information, the central server pushes the alarm data to the central server; the central server forwards the alarm data to the central client through a message communication middleware module arranged in the central server.
3. The implementation method of claim 1, wherein in the process of synchronizing the alarm data of the station server and the corresponding station client, when the step 15 to the step 17 are executed, the station client sends heartbeat information to the corresponding station server at regular time, and when the disconnection between the station client and the station server is found, the operations of the step 15 to the step 17 are executed again after the reconnection.
4. The method of claim 1, wherein the central server synchronizes the alarm data of the central client with the alarm data of the central client, and the synchronization method comprises:
step 21, the central client tries to establish connection with the central server to subscribe a theme, the theme is an alarm notification, if the theme is subscribed successfully, step 25 is executed, otherwise step 23 is executed;
step 22, the central client side starts to try to establish connection with the central server side, if the connection is successful, step 25 is executed, otherwise step 24 is executed;
step 23, the central client loads the alarm data from the database of the central station and displays the alarm data in the corresponding interface, meanwhile, the operation of step 21 is continuously tried to be completed until the topic subscription is successful, and then step 22 is executed;
step 24, the central client loads alarm data from the database of the central station and displays the alarm data in a corresponding interface, meanwhile, the operation of step 22 is continuously tried to be completed until the central client is successfully connected with the central server, and then step 25 is executed;
step 25, the central client sends an alarm data synchronization request to the central server, the central server responds to the alarm data synchronization request and synchronously sends the alarm data to the central client, the central client displays the alarm data in a corresponding interface, and then step 26 is executed;
step 26, after the central server sends the alarm notification message, forwarding the alarm notification message to all the central clients subscribed with the theme in step 21, and then executing step 27;
and 27, the operator performs alarm operation on the alarm notification message received by any central client, the alarm notification message subjected to the alarm operation is called a changed alarm notification message, the central client simultaneously sends the changed alarm notification message to the central server, the central server updates the database of the central station and then sends the received changed alarm notification message to the central server, the central server forwards the changed alarm notification message to all the central clients subscribing the theme in the step 21, and all the central clients refresh the interface again according to the received changed alarm notification message.
5. The method as claimed in claim 4, wherein in the process of synchronizing the alarm data between the central server and the central client, the central client sends heartbeat information to the central server at regular time when steps 25 to 27 are executed, and after the central client is disconnected from the central server, the operations of steps 25 to 27 are executed again after the central client is reconnected.
6. The implementation method of claim 4, wherein in step 27, the central client further sends the changed alarm notification message to a station server corresponding to the station that sends the alarm notification message to the central server, the station server updates the database of the station corresponding to the station, and then sends the changed alarm notification message received by the station server to the station server corresponding to the station server, the station server forwards the changed alarm notification message to all station clients subscribing to the theme in step 11, and all station clients refresh the interface again according to the changed alarm notification message received by the station clients.
7. The implementation method of any one of claims 1 to 6, wherein the distributed alarm system further comprises a plan server, wherein the station server is connected to the plan server of the station corresponding to the station server to call an interface for executing a plan to implement a fully automatic alarm operation of the station; the central server is connected to the plan server of the central station to call an interface for executing a plan so as to realize the full-automatic alarm operation of the subway.
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| CN108616580B (en) * | 2018-04-10 | 2021-03-26 | 广州新科佳都科技有限公司 | Distributed system based on ICE message middleware and data transmission method thereof |
| CN109086894A (en) * | 2018-07-06 | 2018-12-25 | 西安热工研究院有限公司 | A kind of warning message centring system of facing area genco |
| CN111447079B (en) * | 2020-02-28 | 2022-08-16 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | High-availability extension system and method based on SCA framework |
| CN111835873B (en) * | 2020-09-17 | 2021-01-01 | 杭州博采网络科技股份有限公司 | Smart city big data analysis and monitoring system |
| CN114379620A (en) * | 2022-01-04 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Rail transit network centralized alarm system and method |
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