JP2005258586A - Data sharing system and method, and data sharing server - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data sharing system and a method and a data sharing server that enable quick reference without addition to a network and enable the acquisition of reliable information even upon a failure, when a networked device refers to shared information in the other device. <P>SOLUTION: A shared information storage area of a storage part 1b sets therein first to sixth dedicated storage areas corresponding to devices including first to third servers and first to third client terminals, respectively. Information stored in the first to sixth shared information storage areas of the respective devices is periodically delivered to all the other devices. Each device receiving the delivered information stores it in the corresponding storage areas of the first to sixth shared information storage areas of the device. When trying to acquire information in the other device, one device refers to and uses the information in the storage area corresponding to the other device out of the first to sixth shared information storage areas of the device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for sharing data among a plurality of devices connected to a network, and in particular, when a certain device refers to shared data of another device, the data can refer to the shared data at high speed. The present invention relates to a sharing system, a method, and a data sharing server.

  A conventional technique will be described with reference to FIG. In a conventional data sharing system, for example, a plurality of client terminals 1 to 3, servers 1 and 2, and a monitoring server 0 are connected to a network 100 such as a LAN. At this time, when the application of the server 1 refers to the data stored in the client terminal 2 (data in the client terminal 2's own device), the application of the server 1 is connected to the client terminal 2 via the network 100. Access the data in its own device and refer to the data. The monitoring server 10 monitors whether there is a failure in the network 100. For example, if there is no response from the client terminal 2, the point 101 in the network 100 is detected as a failure point.

  However, with such a configuration, when the application of the server 1 refers to the data stored in the client terminal 2, the application of the server 1 is connected to the client terminal 2 in its own device via the network 100. It is necessary to access data and refer to the data, and access to the network 100 occurs each time the data is referenced. Further, by accessing through the network 100, it takes a considerable time to refer to the data. Furthermore, if there is no response from the client terminal 2 when accessing the client terminal 2 from the monitoring server 0, there may be a failure at the location 101, but access is temporarily unavailable. There is also a possibility. Even in such a case, only the monitoring server 0 holds the failure information, which may be unreliable.

  It is an object of the present invention to refer to shared information of another device from a device connected to the network without being added to the network and to be referred to at high speed, and to provide highly reliable information even when a failure occurs. It is to provide a data sharing system, method and data sharing server that can be obtained.

  The present invention solves this problem. The present invention is connected to a network, each of which includes a plurality of shared information storage means, and is connected to the network, each of which includes the shared information storage means. A data sharing system comprising a plurality of client terminals, wherein the shared information storage means sets dedicated storage areas corresponding to the devices of the plurality of servers and the plurality of client terminals, respectively. And each device of the plurality of servers and the plurality of client terminals stores the information stored in the shared information storage means included in each of the devices at every predetermined time for all the plurality of servers other than its own device. Distribution means for distributing to the plurality of client terminals, and information distributed by the distribution means. The storage device stores the received information in a corresponding storage area of the shared information storage unit included in each device, and when the predetermined device acquires information on another device, the predetermined device A data sharing system comprising: a utilization unit that refers to and uses information in a storage area corresponding to the other device in the shared information storage unit included in the device.

  Therefore, according to the present invention, dedicated storage areas corresponding to the respective devices of the plurality of servers and the plurality of client terminals are set in the shared information storage means, and information stored in the shared information storage means included in each device is predetermined. Every time, it is distributed to all of the plurality of servers and the plurality of client terminals other than its own device. A device that has received distributed information stores the received information in a corresponding storage area of the shared information storage unit included in each device, and when a predetermined device acquires information on another device, The information in the storage area corresponding to another device in the shared information storage means included in the device is referred to and used. For this reason, when referring to shared information of another device from a device connected to the network, it can be referred to at high speed without being added to the network, and reliable information can be obtained even when a failure occurs. it can.

  In the present invention, the shared information storage means is further provided with an error information storage area for storing the error information of the equipment, and the information delivered by the delivery means is stored in other information stored in the equipment that performs the delivery. Distribution is performed by adding error information of the device, and the received information is stored in the error information storage area. For this reason, the error information stored in each device can be shared and used, and the reliability of the error information is improved.

  In the present invention, the shared information storage means of the server is further provided with a display information storage area for storing information indicating whether the display means included in the client terminal is displaying. When distributing to a plurality of servers, distribution is performed by adding display information of the own device and other client terminals stored in the client terminal that performs distribution to the display information storage areas of the received plurality of servers. Received information is stored. Further, according to the present invention, a predetermined server of a plurality of servers specifies a client terminal that is not displaying based on display information stored in a display information storage area, and causes the client terminal to display the client terminal with priority. It is characterized by. For this reason, the display means to display can be selected quickly.

  Further, according to the present invention, each shared information storage unit of a plurality of servers further stores priority information of client terminals that display information, and identifies client terminals that are not displaying based on the display information In this case, when it is determined that all the client terminals are being displayed, the display is performed in parallel with the information being displayed on the display unit of the client terminal based on the priority order information. For this reason, when all the client terminals are displaying, it can be displayed in parallel with the information being displayed on the display means of the client terminal based on the priority information.

  In addition, the present invention is characterized in that the network is divided and set in a plurality of setting areas, and the setting area information is added to the error information for distribution. For this reason, it is possible to easily identify where an error has occurred in the network.

  According to the present invention, when referring to shared information of another device from a device connected to the network, the information can be referred to at high speed without being added to the network, and highly reliable information can be obtained even when a failure occurs. Can be obtained.

  According to the present invention, shared information of a plurality of devices connected to a network is periodically distributed and stored by each device to another device, so that a certain device among the plurality of devices can share the other device. When information becomes necessary, the shared information of other devices can be referred to at high speed by using the shared information of other devices stored in the own device.

  FIG. 1 is a configuration block diagram showing a data sharing system according to an embodiment of the present invention.

  The data sharing system manages and controls the entire system, and a plurality of client terminals (here, client terminals 1 to 3) whose personnel are constantly monitoring a display device such as a monitor, reference time information of the entire system Connected to the A system LAN 6 and the B system LAN 7 which are networks such as a LAN to which a plurality of client terminals 1 to 3 are connected, and the A system LAN 6 and the B system LAN 7. The servers 1 to 3 which are a plurality of server devices, the TCM 1A system 20 and the TCM 1B system 21 which are relay bases connected to the A system LAN 6 and the B system LAN 7, which are management targets of the system, for example, It consists of substation equipment SS1 to SS4. Furthermore, a simulator server that performs processing such as various simulations of devices connected to the network may be connected.

  Since the plurality of server devices have the same configuration, the configuration of the server 1 will be described. FIG. 2 is a block diagram showing a configuration of the server 1 which is a data sharing server according to the present invention. The server 1 includes a control unit 10a, a storage unit 10b, and a display unit 10c. The control unit 10a includes an information distribution unit 11a for distributing information to each client terminal or server and an information reception unit 11b for receiving information from each client terminal or server. The storage unit 10b includes a shared information storage area 11c that stores various applications operating on the server, shared information, and the like.

  Next, FIG. 3 is a schematic diagram showing the configuration of the shared information storage area 11c. For example, in the embodiment of the present invention, since a total of six devices including three server devices and three client terminals are connected to the network, the shared information storage area 1-6 corresponding to the six devices, and The storage area 0 is a distribution-only storage area for storing shared information. The shared information storage areas 1-6 are assigned correspondingly with the device addresses of the server 1, server 2, server 0, client terminal 1, client terminal 2, and client terminal 3 being 1-6, respectively. The distribution information is information shared with other devices.

  Next, processing of the data sharing system to which the data sharing method according to an embodiment of the present invention is applied will be described. FIG. 4 is a configuration diagram showing a shared information storage area of a data sharing system to which a data sharing server according to an embodiment of the present invention is applied, and FIG. 5 applies a data sharing method according to an embodiment of the present invention. It is a sequence diagram which shows the process of a data sharing system.

  In the embodiment of the present invention, for example, an embodiment in which the server 1 periodically distributes shared information will be described. In step S1, the information distribution unit 11a included in the control unit 10a of the server 1 converts the distribution information stored in the storage area 0 of the shared information storage area 11c of the storage unit 10b to other servers 2, 3, and clients. Deliver to terminals 1 to 3 via the network.

The servers 2 and 3 and the client terminals 1 to 3 that have received the distribution information are dedicated areas for storing the information received from the server 1 in the shared information storage area of the storage unit thereof in step S2. Store in a certain storage area 1. In addition, since step S2 mentioned above is distributed via a network, the distribution order to each apparatus changes with the occasion, for example, it is not necessarily the number order of apparatus address. Further, for example, when the server 2 periodically distributes shared information, the shared information stored in the storage area 0 of the server 2 is distributed, and each received device receives from the server 2 of the storage unit. The information is stored in the storage area 2 which is a dedicated storage area for the information.

  In this way, all devices connected to the network and assigned device addresses regularly distribute and store the shared information in its storage area 0, so that all devices store the shared information with each other. Therefore, when referring to the shared information of an arbitrary device, the shared information is stored at high speed by using the shared information stored in its own storage area without accessing the arbitrary device via the network. You can refer to it.

  Next, a data sharing system to which a data sharing server according to another embodiment of the present invention is applied will be described. In this embodiment, error information stored in each device is stored in the storage area 0 in the shared information storage area and distributed.

  FIG. 6 is a schematic diagram showing the configuration of the storage area 0 in the shared information storage area. In the storage area 0, a plurality of data can be stored. For example, it is assumed that data 1 to data n are stored in the storage area 0. When shared information is regularly distributed from the storage area 0, an interval for distributing data 1 to data n can be set.

  Next, for example, the data 2 that is one of the data 1 to data n stored in the storage area 0 of the server 1 (device address 1) is transferred to each device performed by the server 1, for example. Stores call result data. For example, in the matrix data shown in FIG. 6, the device address that has not responded to the hello call from the server 1 that is the device address 1 is 4 (client terminal 1). Further, for example, result data of a hello call made from the server 3 (device address 3) is shown in FIG. Similarly in FIG. 7, it can be seen that the device address that does not respond to the hello call from the server 3 that is the device address 3 is 4 (client terminal 1). The result data of the hello call made by each of these devices is distributed from the storage area 0 to other devices, so that each received device can obtain data as shown in FIG. By referring to this data, each device can grasp that the client terminal 1 having the device address 4 has caused an error. Thereby, for example, it can be predicted that the error is in the location α in FIG. 1 or in the client terminal 4 itself.

  Further, when data as shown in FIG. 9 is obtained, only the server 2 having the device address 2 has received the error of the device having the device address 4, and no other device has received the error. I understand. Thereby, it can be determined that the error is a mere transient error. If the device address 2 (server 2) is a conventional monitoring server, there is only information on the error received by the monitoring server. The client terminal 1) has determined that an error has occurred, and there may be a problem in reliability. However, this point is eliminated in the embodiment of the present invention.

  Next, a data sharing system to which a data sharing server according to still another embodiment of the present invention is applied will be described. In this embodiment, display information stored in each device is stored in the storage area 0 in the shared information storage area and distributed. The display information includes information indicating whether the device is displaying on a display device such as a display. Also, display information is given priority over client terminals that do not use a display device, mainly when the server terminal grasps display information of the client terminal and displays urgent information to be notified from the server side to the client terminal. The purpose is to display emergency information and so on.

  Next, for example, the data 1 that is one of the data 1 to data n stored in the storage area 0 of the client terminal 1 (device address 4) is displayed on, for example, its own display device. Stores display information about whether or not there is. Each of the servers 1 to 3 that has received the shared information including the display information can grasp the display information of the client terminals 1 to 3 as shown in FIG. 7, for example. Based on the received display information, Emergency information or the like is preferentially displayed on the display device of the client terminal 3, which is a vacant display device. Furthermore, in addition to the display information, priority information can be stored in the storage area 0 and distributed. This priority information is used when the display devices of the client terminals 1 to 3 are in use, as shown in FIG. 8, and in this case, the priority information is determined according to the priority information. It is possible to notify the client terminal that there is information to be notified, such as emergency information, by superimposing it on a part of the information being displayed on the display device of the client terminal 1 having the highest number.

  Next, for example, when storing the result data of the above-described hello call to each device in data 3 which is one of the data 1 to data n stored in the storage area 0 of each device, Information of each of the A system LAN 6 and the B system LAN 7 which are networks used in the embodiment of the present invention is stored. The servers 1 to 3 that have received this shared information can obtain data as shown in FIG. 12, for example, so that the A system LAN 6 is normal over the entire area, and the B system LAN 7 It can be seen that the device at the device address 4 has an error. Further, in the case of the data as shown in FIG. 13, it can be seen that the A-system LAN 6 is normal over the entire area, and the B-system LAN 7 is interrupted due to an error.

  The data sharing system, method, and data sharing server described in the present embodiment are, for example, magnetic disks (floppy disks, hard disks, etc.) as programs (software means) that can be executed by a computer (computer). ), An optical disk (CD-ROM, DVD, etc.), a recording medium such as a semiconductor memory, and can be transmitted and distributed by a communication medium. The program stored on the medium side includes a setting program for configuring software means (including not only the execution program but also a table and data structure) to be executed in the computer. A computer that implements this apparatus reads a program recorded on a recording medium, constructs software means by a setting program as the case may be, and executes the above-described processing by controlling the operation by this software means.

1 is a configuration block diagram showing a data sharing system according to an embodiment of the present invention. It is the block diagram which showed the structure of the server 1 which is a data sharing server which concerns on this invention. It is the schematic diagram which showed the structure of the shared information storage area. It is a block diagram which shows the shared information storage area of the data sharing system to which the data sharing server which concerns on one Embodiment of this invention is applied. It is a sequence diagram which shows the process of the data sharing system to which the data sharing method which concerns on one Embodiment of this invention is applied. It is the schematic diagram shown about the structure of the storage area 0 in a shared information storage area. It is a schematic diagram which shows the result data of the hello call which the apparatus address 3 received. It is a schematic diagram which shows the data which totaled the result data of the hello call which each apparatus received. It is a schematic diagram which shows the data which totaled the result data of the hello call which each apparatus received. It is a schematic diagram which shows the display apparatus availability of each client terminal of the server side which received display information. It is a schematic diagram which shows the display apparatus availability of each client terminal of the server side which received display information. It is a schematic diagram which shows the data which totaled the result data of the hello call which each apparatus received. It is a schematic diagram which shows the data which totaled the result data of the hello call which each apparatus received. It is the block diagram which showed the structure of the data sharing system which concerns on a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 10a ... Control part, 1b, 10b ... Memory | storage part, 1c, 10c ... Display part, 5 ... Standard clock, 20 ... TCM1A system, 21 ... TCM1B system

Claims (18)

A data sharing system comprising a plurality of servers connected to a network and each provided with shared information storage means, and a plurality of client terminals connected to the network and each provided with the shared information storage means ,
Setting means for setting dedicated storage areas corresponding to the respective devices of the plurality of servers and the plurality of client terminals in the shared information storage means;
Each of the plurality of servers and the plurality of client terminals has the information stored in the shared information storage means included in each of the devices, all of the plurality of servers other than its own device every predetermined time, and the Distribution means for distributing to a plurality of client terminals;
The device that has received the information distributed by the distribution unit stores the received information in a corresponding storage area of the shared information storage unit included in each device;
When the predetermined device acquires information on another device, a utilization unit that refers to and uses information in a storage area corresponding to the other device in the shared information storage unit included in the predetermined device;
A data sharing system comprising: The data sharing system according to claim 1,
The shared information storage means is further provided with an error information storage area for storing device error information, and in the information distributed by the distribution means, errors of other devices stored in the distributing device are stored. A data sharing system, wherein distribution is performed by adding information, and the received information is stored in the error information storage area. The data sharing system according to claim 1 or 2,
The shared information storage means of the server is further provided with a display information storage area for storing information indicating whether the display means included in the client terminal is displaying, and the plurality of client terminals of the distribution means When distributing to the plurality of servers, the display is stored by adding the display information of the own device and other client terminals stored in the client terminal that performs distribution, and receiving the display information of the plurality of servers A data sharing system for storing received information in an area. The data sharing system according to any one of claims 1 to 3,
The predetermined server of the plurality of servers identifies a client terminal that is not displaying based on display information stored in the display information storage area, and displays the client terminal with priority. Data sharing system. The data sharing system according to any one of claims 1 to 4,
Each shared information storage means of the plurality of servers further stores priority information of client terminals that display information, and when specifying client terminals that are not displaying based on the display information, all The data sharing system is characterized in that, when it is determined that the client terminal is being displayed, the information is displayed in parallel with the information being displayed on the display means of the client terminal based on the priority information. The data sharing system according to claim 1 or 2,
2. The data sharing system according to claim 1, wherein the network is divided into a plurality of setting areas, and is distributed with the setting area information added to the error information. The plurality used in a data sharing system that is connected to a network and includes a plurality of client terminals each provided with shared information storage means and a plurality of servers connected to the network and provided with the shared information storage means A data sharing server that is one of the servers
In the shared information storage means, dedicated storage areas corresponding to the devices of the plurality of servers and the plurality of client terminals are set,
Distribution means for distributing the information stored in the shared information storage means to all the plurality of servers and the plurality of client terminals every predetermined time;
Storage means for receiving information stored in the shared information storage means included in each of the plurality of servers and the plurality of client terminals, and storing the information in a corresponding storage area of the shared information storage means of the server;
When acquiring information on an arbitrary device among the plurality of servers and the plurality of client terminals, refer to information on a storage area corresponding to the arbitrary device in the shared information storage unit of the server. Use means to use,
A data sharing server comprising: The data sharing server according to claim 7,
The shared information storage means is further provided with an error information storage area for storing device error information, and in the information distributed by the distribution means, errors of other devices stored in the distributing device are stored. A data sharing server characterized in that information is added and distributed. In the data sharing server according to claim 7 or 8,
The shared information storage unit of the server is further provided with a display information storage area for storing information indicating whether the display unit included in the client terminal is displaying, and the plurality of client terminals store the information A data sharing server that receives display information and stores the received information in the display information storage area. The data sharing server according to any one of claims 7 to 9,
A data sharing server, wherein a client terminal that is not performing display is specified based on display information stored in the display information storage area, and is displayed preferentially on the client terminal. The data sharing server according to any one of claims 7 to 10,
The shared information storage means of the server further stores priority information of the client terminals that display information. When identifying client terminals that are not displaying based on the display information, all client terminals A data sharing server characterized in that, when it is determined that it is being displayed, it is displayed in parallel with the information being displayed on the display means of the client terminal based on the priority information. In the data sharing server according to claim 7 or 8,
The network is divided into a plurality of setting areas, and is distributed with the setting area information added to the error information for distribution. Used in a data sharing system that is connected to a network and includes a plurality of servers each provided with shared information storage means, and a plurality of client terminals that are connected to the network and each provided with the shared information storage means. A data sharing method,
A setting step of setting a dedicated storage area corresponding to each device of the plurality of servers and the plurality of client terminals in the shared information storage unit;
Each of the plurality of servers and the plurality of client terminals has the information stored in the shared information storage means included in each of the devices, all of the plurality of servers other than its own device every predetermined time, and the A distribution step for distributing to a plurality of client terminals;
The device that has received the information distributed in the distribution step stores the received information in a corresponding storage area of the shared information storage unit included in each device;
When a predetermined device acquires information on another device, a use step of referring to and using information in a storage area corresponding to the other device in the shared information storage unit included in the predetermined device;
A data sharing method comprising: The data sharing method according to claim 13,
The shared information storage means is further provided with an error information storage area for storing device error information, and in the information distributed by the distribution means, errors of other devices stored in the distributing device are stored. A data sharing method, wherein distribution is performed by adding information, and the received information is stored in the error information storage area. The data sharing method according to claim 13 or 14,
The shared information storage means of the server is further provided with a display information storage area for storing information indicating whether the display means included in the client terminal is displaying, and the plurality of client terminals in the distribution step When distributing to the plurality of servers, the display is stored by adding the display information of the own device and other client terminals stored in the client terminal that performs distribution, and receiving the display information of the plurality of servers A data sharing method characterized by storing received information in an area. 16. The data sharing method according to claim 13, wherein:
The predetermined server of the plurality of servers identifies a client terminal that is not displaying based on display information stored in the display information storage area, and displays the client terminal with priority. Data sharing method. 16. The data sharing method according to claim 13, wherein:
Each shared information storage means of the plurality of servers further stores priority information of client terminals that display information, and when specifying client terminals that are not displaying based on the display information, all A data sharing method characterized in that, when it is determined that the client terminal is displaying, the information is displayed in parallel with the information being displayed on the display means of the client terminal based on the priority information. The data sharing method according to claim 13 or 14,
The network is divided and set in a plurality of setting areas, and the data is distributed by adding the setting area information to the error information.

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