JP2005038246A - Facility monitoring control device, facility monitoring control system, facility monitoring control method and facility monitoring control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inhibit accumulation of large measurement data in a data memory while preventing extinguishment of measurement data with high degree of importance in case of abnormality of a communication network. <P>SOLUTION: The facility monitoring control device E collects measurement data from facility groups included in a facility system S, and transmits the collected measurement data to a facility management server F through the communication network N. When the abnormality of the communication network N disables the transmission of the measurement data, the collected measurement data are accumulated in the control device E. The control device E selectively deletes the accumulated measurement data so as to preferentially leave the measurement data with high degree of importance. The measurement data are further deleted, including those with higher importance degree, as the duration of abnormality of the communication network N is extended more. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a facility monitoring control device, a facility monitoring control system, a facility monitoring control method, and a facility monitoring control that collect measurement data from a facility group that is a monitoring control target and transmit the measurement data to a facility management server via a communication network. Related to the program.

  Conventionally, an equipment management server placed at a center site has obtained measurement data relating to equipment groups (eg, a large number of lighting equipment, centralized heating / cooling equipment, etc.) installed at each local site (eg, factory, plant, office building, etc.). An equipment monitoring control system that collects data via a communication network and remotely monitors, controls, and maintains each equipment is known (for example, Patent Document 1). An equipment monitoring control device is placed at each local site. The equipment monitoring control device collects measurement data from the equipment group and transmits the measurement data to the equipment management server.

  However, in the conventional equipment monitoring control system, when an abnormality occurs in the communication network and measurement data cannot be transmitted from the equipment monitoring control apparatus to the equipment management server, a large amount of measurement data to be transmitted is sent to the equipment monitoring control apparatus. There was a case of accumulation. For this reason, when highly important measurement data is included, it is necessary to provide a large-capacity data memory in the equipment monitoring control device in order to prevent the loss of measurement data. Further, after the communication network is restored, a large amount of measurement data is transmitted to the facility management server at the same time, so that the communication network and the facility management server may be overloaded.

On the other hand, Patent Document 2 discloses a technique in which a monitoring device that monitors the state of a plant preferentially transmits highly important data to a communication network.
JP 2002-71198 A JP 2000-36987 A

  However, Patent Document 2 does not disclose a technique for organizing data stored in the data memory in accordance with the state of the communication network. This conventional technique does not disclose data to the data memory due to an abnormality in the communication network. It did not solve the problem of data accumulation and data loss. In addition, this conventional technology does not solve the problem that a large amount of measurement data is transmitted to the facility management server all at once after the communication network is restored.

  The present invention has been made in view of the above-described problems, and can suppress the accumulation of a large amount of measurement data in a data memory while preventing the loss of highly important measurement data when a communication network is abnormal. An object of the present invention is to provide a facility monitoring control device, a facility monitoring control system, a facility monitoring control method, and a facility monitoring control program.

  In order to solve the above-described problems and achieve the above object, a first means according to the present invention is an equipment monitoring and control apparatus, equipment communication means for collecting measurement data from an equipment group to be monitored and controlled, and data Memory, data writing means for writing the collected measurement data to the data memory, and data transmission means for reading the measurement data from the data memory and transmitting the read measurement data to a facility management server via a communication network And priority information that defines a priority for each type of measurement data, and deletion condition information that prescribes a condition for deleting the measurement data from the data memory so that the lower the priority, the higher the priority. And the priority stored in the database memory when the communication network is abnormal By referring to the information and the deletion condition information, data deletion determination means for determining what should be deleted among the measurement data written in the data memory, and the measurement data written in the data memory Of these, data deletion processing means for deleting data determined by the data deletion determination means to be deleted is provided.

  Preferably, the deletion condition information defines the condition so that measurement data having a higher priority or lower is deleted from the data memory as the duration of abnormality of the communication network is longer. Alternatively, the deletion condition information defines the condition so that measurement data having a higher priority is deleted from the data memory as the amount of stored data stored in the data memory is larger.

  Moreover, the 2nd means which concerns on this invention is an equipment monitoring control system, Comprising: The equipment monitoring control apparatus as a 1st means, The equipment group which is the monitoring control object which the said equipment communication means collects the said measurement data And an equipment management server connected to the data transmission means via a communication network and receiving the measurement data transmitted by the data transmission means.

  The third means according to the present invention is a facility monitoring control method, which is a facility communication step for collecting measurement data from a group of facilities to be monitored and controlled, and data for writing the collected measurement data to a data memory. Information stored in the database memory when the communication network is abnormal, and a data transmission step of reading the measurement data from the data memory and transmitting the read measurement data to the equipment management server via the communication network In addition, the priority information that defines the priority for each type of the measurement data and the condition for deleting the measurement data from the data memory are the deletion conditions that are preferentially deleted as the priority is lower The measurement data written in the data memory should be deleted by referring to the information. And a data deletion processing step for deleting data determined to be deleted by the data deletion determination step among the measurement data written in the data memory. It is what.

  Further, a fourth means according to the present invention is a facility monitoring control program for collecting measurement data from a facility group to be monitored and controlled by a facility monitoring control device comprising a data memory and a database memory. Function, data writing function for writing the collected measurement data to the data memory, and data transmission function for reading the measurement data from the data memory and transmitting the read measurement data to a facility management server via a communication network Information stored in the database memory when the communication network is abnormal, the priority information defining the priority for each type of the measurement data, and the condition for deleting the measurement data from the data memory Refer to the deletion condition information that specifies that the lower priority is to be deleted preferentially. Thus, the data deletion determination function for determining which of the measurement data written in the data memory should be deleted and the data deletion determination function of the measurement data written in the data memory should be deleted. And a data deletion processing function for deleting those determined to be.

  The equipment monitoring control device, equipment monitoring control system, equipment monitoring control method, and equipment monitoring control program having such a configuration are a communication network for transmitting measurement data collected from the equipment group to be monitored and controlled to the equipment management server. When an abnormality occurs, the priority information stored in the database memory and the deletion condition information are referenced to delete the measurement data from the data memory written before transmission with a lower priority. . For this reason, by giving higher priority to measurement data with higher importance, it is possible to suppress accumulation of a large amount of measurement data in the data memory while preferentially leaving measurement data with higher importance. it can. As a result, it is possible to prevent loss of highly important measurement data while using a data memory having a small capacity. In addition, after the communication network is restored, a phenomenon in which a large amount of measurement data rushes to the facility management server through the communication network can be suppressed, and an excessive load can be avoided on the communication network and the facility management server. In addition, since priority information and deletion condition information are stored in the database memory, the priority and deletion conditions can be easily changed by rewriting these information, and can be flexibly adapted to various equipment groups. Is possible.

[First Embodiment]
(System configuration)
FIG. 1 is a block diagram showing a configuration of an equipment monitoring control system 101 according to the first embodiment of the present invention. In this equipment monitoring control system 101, equipment monitoring control devices E (1) to E (N) respectively corresponding to the first local site L (1) to the Nth local site L (N) are individually installed, A facility management server F is installed at the center site C. Each equipment monitoring control device E and equipment management server F are connected to each other via a communication network N. Each of the local sites L (1) to L (N) is, for example, a factory, a plant, an office building, a school, an apartment house, or the like. In the following description, the local sites L (1) to L (N) are represented as appropriate as the local site L, and the facility monitoring control devices E (1) to E (N) are represented as appropriate. E is written as appropriate. The same applies to the equipment systems S (1) to S (N) individually installed at the local sites L (1) to L (N).

  The local site L includes an equipment system S that is subject to supervisory control by the equipment monitoring control device E. As shown in FIG. 2, the equipment system S includes equipment groups 21, 22, and 23, and a control unit 20 that centrally manages the supply of power to these. The equipment groups 21, 22, and 23 include, for example, lighting equipment, air conditioning equipment, and the like. If the local site L is an office building, for example, a large number of lighting equipment arranged in each office, lighting equipment in a common area, building The entire air conditioning system is included. The equipment monitoring control device E collects measurement data from each of the equipment groups 21, 22, and 23 and transmits the collected measurement data to the equipment management server F via the communication network N as a main function. The measurement data relates to, for example, the on / off state of each of the equipment groups 21, 22, and 23, power consumption, and the temperature of air adjusted by the air conditioning equipment.

  The equipment management server F accumulates the measurement data sent from each local site L, and performs monitoring, control, or maintenance of the equipment groups 21, 22, and 23 through the communication network N and the equipment monitoring control device E. The communication network N includes a telecommunication line such as a public telephone line or a dedicated line. The equipment monitoring control device E and the equipment management server F are related to the Internet such as TCP / IP (Transmission Control Protocol / Internet Protocol). Communication by a communication method using a protocol is possible. In addition, as a communication method via the communication network N, not only a packet-switched communication method represented by the Internet, but also a variety of forms such as a circuit-switched communication method and a conventional so-called personal computer communication form can be adopted. is there.

  FIG. 3 is a block diagram showing a configuration of the equipment monitoring control apparatus E. The equipment monitoring control device E includes an equipment system communication unit 1, a data writing unit 2, a data memory 3, a database memory 4, a data deletion determination unit 5, a data deletion processing unit 6, and a data communication unit 7. Each of these elements may be configured by hardware that does not require software, but elements other than the data memory 3 and the database memory 4 are equivalently configured by a CPU (central processing unit) that operates based on the software. May be.

  The equipment system communication unit 1 is an apparatus element that communicates with the equipment system S, and has a main function of collecting measurement data from each of the equipment groups 21, 22, and 23. The data writing unit 2 is a device element that writes measurement data collected by the equipment system communication unit 1 to the data memory 3. The data memory 3 is a memory that stores written measurement data. In the simple configuration of the equipment monitoring and control apparatus E, a small, inexpensive and highly reliable semiconductor memory is used for the data memory 3 rather than a hard disk or the like which is expensive, large in size and inferior in reliability for long-term use. Is desirable. The data communication unit 7 is a device element that communicates with the facility management server F. The main function is to read the measurement data written in the data memory 3 and transmit the read measurement data to the facility management server F. Yes.

  The database memory 4 stores in advance the priority information illustrated in FIG. 4 and the deletion condition information illustrated in FIG. The priority information is information defining a priority for each type of measurement data. In the example of FIG. 4, the lowest priority 1 is given to the data type MD collected from the equipment system S every minute, and the highest priority is given to the data type DD collected every day. Degree 4 is given. The priority is set higher as the importance is higher and the loss from the data memory 3 is not allowed. A priority 3 is assigned to the data type HD collected every hour, and a priority 2 is assigned to the particularly important data type MID among the data types collected every minute.

  The deletion condition information is information that defines a condition for deleting measurement data from the data memory 3, and is set so that the lower priority illustrated in FIG. In the example of FIG. 5, the elapsed time after the communication between the data communication unit 7 and the facility management server F is not normally performed due to the occurrence of an abnormality in the communication network N, that is, the continuation of the abnormality of the communication network. Deletion conditions are defined in a time-dependent manner. More specifically, if the duration of the abnormality is 1 hour or more, the priority 1 data type is a target of deletion, and if it is 3 hours or more, in addition to the priority 1 data, the priority 2 data is deleted. The data type is subject to deletion. If the duration of the abnormality is 24 hours or more, the data types with priorities 1 to 3 are targeted for deletion.

  In addition to the condition number (No.) for identifying each condition, the condition type T is added to the deletion condition information in FIG. This is an identification code for identifying a condition type given in a time-dependent manner as shown in FIG. 5 and another condition type employed in the second embodiment, for example. The database memory 4 stores deletion condition information of various condition types together with identification codes for identifying the condition types, so that the difference in the equipment group S for each local site L in which the equipment monitoring control device E is installed. For example, the installation contractor or the user of the equipment monitoring control device E can select any one of the condition types.

  The data deletion determination unit 5 refers to the priority information and the deletion condition information stored in the database memory 4 when the communication network N is abnormal, so that any of the measurement data written in the data memory 3 is selected. It is a device element that determines whether to delete. The data deletion processing unit 6 is a device element that deletes the measurement data written in the data memory 3 that the data deletion determination unit 5 determines to be deleted.

  Since the equipment monitoring control apparatus E is configured as described above, when an abnormality occurs in the communication network, the equipment monitoring control apparatus E is written in the data memory 3 based on the priority information and the deletion condition information stored in the database memory 4. Measurement data is selectively deleted according to the priority. Hereinafter, this characteristic operation will be described in detail.

(System operation)
FIG. 6 is a flowchart showing an operation procedure by the equipment monitoring control system 101, and shows the operation of each device element shown in FIG. 3 in parallel. In the example of FIG. 6, it is assumed that the database memory 4 stores the example illustrated in FIG. 4 as the priority information, and stores the example illustrated in FIG. 5 as the deletion condition information.

  When an abnormality occurs in the communication network N, the data deletion determination unit 5 detects this (step S1). The occurrence of an abnormality in the communication network N is directly detected by the data transmission unit 7. Since the data transmission unit 7 transmits various data including measurement data to the facility management server F through the communication network N, for example, after transmitting the data based on the TCP / IP protocol, an ACK (acknowledge) response is received. By determining whether or not to be returned, an abnormality and recovery of the communication network N can be detected.

  FIG. 7 is a flowchart showing a procedure of abnormality detection processing by the data transmission unit 7 as an example. When the process starts, the data transmission unit 7 first determines whether or not data has been transmitted (step S341), and repeats the process of step S31 until there is data transmission. If there is data transmission, it is determined whether or not there has been an ACK response to the data (step S32). If there is no ACK response, it is determined whether or not a certain reference time has elapsed after data transmission (step S32). S34). If the reference time has not elapsed, the process returns to step S32. Therefore, while there is no ACK response, the processes of steps S32 and S34 are repeated until the reference time elapses. The reference time is a predetermined length of time, for example.

  When the reference time elapses without an ACK response (step S34), the data transmission unit 7 turns on the flag. That is, if there is no ACK response even after a reference time after data transmission, the data transmission unit 7 determines that an abnormality has occurred in the communication network N, and turns on the flag (step S35). As shown in FIG. 3, the CPU included in the equipment monitoring control device E has a flag register 8. Turning on the flag means writing, for example, a value “1” in the flag register 16.

  Returning to FIG. 7, if there is an ACK response before the reference time elapses (step S32), the data transmitting unit 7 determines that the communication network N is normal or has recovered from the abnormality, and the process is stepped. Proceeding from S32 to S33, the flag is turned off (for example, the value “0” is written in the flag register 8). When the process of step S33 or S35 is completed, when the process of FIG. 7 is to be terminated (step S36), such as when the power of the equipment monitoring control apparatus E is to be turned off, the data transmission unit 7 performs the process of FIG. finish. On the other hand, in the normal case where the process should not be terminated (step S36), the process returns to step S31, and it is determined again whether or not data has been transmitted. Through the above processing, the data transmission unit 7 detects an abnormality or recovery of the communication network N and expresses the result as a value to be written in the flag register 8.

  The data deletion determination unit 5 can monitor the flag register 8 by, for example, polling, and detect an abnormality and recovery of the communication network N based on the value. FIG. 8 is a flowchart showing a procedure of abnormality detection processing by the data deletion determination unit 5 as an example. In this process, the data deletion determination unit 5 first reads a flag (step S41), and determines whether or not there is a change in the value of the flag (step S42). If there is no change in the value of the flag, the data deletion determination unit 5 ends the process of FIG. 8 when the process is to be ended (step S46), such as when the facility monitoring control device 1 is to be turned off. In the normal case where the process should not be terminated (step S46), the process returns to step S41, and the flag is read again.

  When the change is recognized in the flag (step S42) and the value of the flag changes from off to on (step S43), the data deletion determination unit 5 detects that the communication network N is abnormal. (Step S18). Conversely, when the value of the flag changes from on to off (step S43), the data deletion determination unit 5 detects that the communication network N is normal or has recovered from the abnormality (step S1). Thereafter, the process proceeds to step S46. The loop from step S41 to step S46 is repeatedly executed at time intervals.

  Since the flag register 8 is written by the data transmission unit 7, the flag register 8 is depicted as being in the data transmission unit 7 in FIG. 3. Any of the above may be drawn. Further, the flag register 8 may be provided in a memory (not shown) separately prepared instead of the register provided in the CPU.

  Further, instead of using polling, it is also possible to adopt a form in which the data transmission unit 7 transmits a signal notifying the abnormality and recovery of the communication network N to the data deletion determination unit 5. In this embodiment, the flag register 8 is not necessary, and the data deletion determination unit 5 does not need to monitor the flag register 8 by polling. The data deletion determination unit 5 may determine the state of the communication network N simply based on the notification signal from the data transmission unit 7.

  The data deletion determination unit 5 proceeds with the process according to the procedure of FIG. 9 after detecting the abnormality of the communication network N in step S1 of FIG. In this process, the data deletion determination unit 5 detects that an abnormality has occurred in the communication network N in step S1 (FIG. 6), or has returned a process from step S54 to step S51, for example, a specified time of 1 hour has elapsed. The process of step S51 is repeated until As a result, after the abnormality of the communication network N is detected, the processes of steps S52 to S54 are repeatedly executed every specified time. For example, the designated time may be set at the time of shipment or installation of the equipment monitoring control apparatus E, or may be designated by an operator (operator) or the like by inputting values in a timely manner. When the specified time has elapsed (step S51), the data deletion determination unit 5 refers to the priority information (FIG. 4) and the deletion condition information (FIG. 5) stored in the database memory 4 (step S52). Subsequently, the data deletion determination unit 5 requests the data deletion processing unit 6 to delete the measurement data of the corresponding data type from the data memory 3 based on the priority information and the deletion condition information (step S53). Thereafter, the data deletion determination unit 5 repeats the loop of steps S51 to S54 until the recovery of the communication network N is detected (step S54).

  In the example of FIG. 6, the designated time is designated as 1 hour. Therefore, the data deletion determination unit 5 detects priority of the communication network N in step S1, and after one hour has passed, priority information (FIG. 4) and deletion condition information (FIG. 5) stored in the database memory 4 are stored. Is referred to (step S2). Since the continuation time of the abnormality of the communication network N has reached 1 hour, it can be seen from FIGS. 4 and 5 that the data type MD with priority 1 is the object to be deleted. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data type MD from the data memory 3 (step S3). In response to this, the data deletion processing unit 6 deletes the measurement data of the data type MD from the data memory 3 (step S4). Thereby, the measurement data of the data type MD disappears from the data memory 3 (step S5).

  Assume that nine measurement data illustrated in FIG. 10 are written in the data memory 3 immediately before the measurement data of the data type MD is deleted in step S4. As shown in FIG. 10, the measurement data written in the data memory 3 includes a time stamp indicating the time when the facility system communication unit 1 collects the measurement data and a data type in addition to the measurement value. Yes. The numerical value of the measured value is, for example, power consumption (KWh). FIG. 10 includes three pieces of measurement data corresponding to the data type MD. Therefore, when the data deletion processing unit 6 deletes the measurement data of the data type MD from the data memory 3, only the six measurement data shown in FIG.

  Even after the measurement data of the data type MD is deleted, measurement data of various data types are newly accumulated in the data memory 3. For this reason, the process of step S2-S5 is repeatedly performed for every hour (designated time).

  When 3 hours have elapsed after the abnormality of the communication network N is detected, the data deletion determination unit 5 refers again to the priority information (FIG. 4) and the deletion condition information (FIG. 5) stored in the database memory 4. (Step S6). Since the duration of the abnormality of the communication network N has reached 3 hours, it can be seen from FIGS. 4 and 5 that the data type MD with priority 1 and the data type MID with priority 2 are to be deleted. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data type MD and MID from the data memory 3 (step S7). In response to this, the data deletion processing unit 6 deletes the measurement data of the data type MD and MID from the data memory 3 (step S8). Thereby, the measurement data of the data type MD and MID disappear from the data memory 3 (step S9).

  When 4 hours elapse after the abnormality of the communication network N is detected, the data deletion determination unit 5 refers again to the priority information (FIG. 4) and the deletion condition information (FIG. 5) stored in the database memory 4. (Step S10). The abnormality duration of the communication network N has reached 3 hours, but has not reached 24 hours. Therefore, from FIG. 4 and FIG. 5, the data type MD of priority 1 and priority 2 continue from the previous time. It can be seen that the data type MID is a deletion target. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data types MD and MID from the data memory 3 as in step S7 (step S11). In response to this, the data deletion processing unit 6 deletes the measurement data of the data type MD and MID from the data memory 3 (step S12). Thereby, the measurement data of the data type MD and MID disappear from the data memory 3 (step S13). Thereafter, the same process is repeated until the duration of abnormality of the communication network N reaches 24 hours.

  When 24 hours have elapsed after the abnormality of the communication network N is detected, the data deletion determination unit 5 refers again to the priority information (FIG. 4) and the deletion condition information (FIG. 5) stored in the database memory 4. (Step S14). Since the continuation time of the abnormality of the communication network N has reached 24 hours, the data type MD of priority 1, the data type MID of priority 2 and the data type HD of priority 3 are deleted from FIGS. 4 and 5. It turns out that it is a target. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data types MD, MID, and HD from the data memory 3 (step S15). In response to this, the data deletion processing unit 6 deletes the measurement data of the data types MD, MID, and HD from the data memory 3 (step S16). As a result, the measurement data of the data types MD, MID, and HD disappear from the data memory 3 (step S17). Thereafter, the processes in steps S14 to S17 are repeated every hour until the data deletion determination unit 5 detects the recovery of the communication network N (step S18).

  As described above, the equipment monitoring control system 101 according to the present embodiment allows the data memory 3 to preferentially leave measurement data with high priority, that is, high importance when abnormality occurs in the communication network N. Selectively delete measurement data from For this reason, it is possible to prevent loss of highly important measurement data while using a data memory 3 having a small capacity. In addition, after the communication network N is restored, a phenomenon in which a large amount of measurement data rushes to the facility management server F through the communication network N can be suppressed, and the communication network N and the facility management server F can be protected from an excessive load.

  In addition, since the measurement data is selectively deleted based on the priority information and the deletion condition information stored in the database memory 4, the priority and the deletion conditions can be easily changed by rewriting these information. Can do. Therefore, the equipment monitoring control device E can be flexibly adapted to various equipment groups 21, 22, and 23. Furthermore, since the measurement data including the higher priority is deleted from the data memory as the duration of the abnormality of the communication network N is longer, the measurement data having a relatively high importance along with the duration of the abnormality is stored in the data memory. 3 can be prevented from accumulating. That is, accumulation of a large amount of measurement data in the data memory 3 can be more effectively suppressed.

[Second Embodiment]
Next, a facility monitoring control system according to the second embodiment of the present invention will be described. The configuration of this equipment monitoring control system is the same as that shown in FIGS. FIG. 12 is a flowchart showing an operation procedure by the equipment monitoring control system according to the second embodiment.

  When an abnormality occurs in the communication network N, the data deletion determination unit 5 detects this (step S1). Thereafter, the data deletion determination unit 5 proceeds with the process according to the procedure of FIG. In this process, the data deletion determination unit 5 first detects the amount of data stored in the data memory 3, that is, the total data amount (step S81). As shown in FIG. 14, the software defining the operation of the CPU can be divided into an OS (Operating System) 32 and application software 31 operating on the upper layer. To detect the amount of data stored in the data memory 3, a specific command (command) 33 prepared in advance by the OS 32 is sent from the application software 31 to the OS 32, and the OS 32 sends the stored data amount 34 to the application software 31 in response thereto. Easily achieved by returning.

  Returning to FIG. 13, when the data deletion determination unit 5 obtains the storage data amount (step S81), the data deletion determination unit 5 next refers to the priority information and the deletion condition information stored in the database memory 4 (step S82). In the priority information, for example, as illustrated in FIG. 15, priorities 1 to 4 are individually defined for the data types 1001 to 1004. Data types 1001 to 1004 correspond to types of facilities such as lighting facilities and air conditioning facilities, for example. The priority is set higher as the importance is higher and the loss from the data memory 3 is not allowed.

  For example, as shown in FIG. 16, the deletion condition information is determined in a form that depends on the amount of data stored in the data memory 3. More specifically, if the amount of stored data is 10 megabytes or more, the priority 1 data type is the target of deletion, and if it is 15 megabytes or more, in addition to the priority 1 data, the priority 2 data type is deleted. Data type is subject to deletion. If the amount of stored data is 25 megabytes or more, data types with priorities 1 to 3 are targeted for deletion. A condition type C is attached to the deletion condition information in FIG. Thereby, it is possible to distinguish from other condition types, for example, the condition type T illustrated in FIG.

  Returning to FIG. 13 again, the data deletion determination unit 5 refers to the priority information and the deletion condition information (step S82), and then deletes the measurement data of the corresponding data type from the data memory 3 based on these information. The data deletion processing unit 6 is requested to do so (step S83). Thereafter, the data deletion determination unit 5 repeats the loop of steps S81 to S84, for example, every specified time until the recovery of the communication network N is detected (step S84). For example, the designated time may be set at the time of shipment or installation of the equipment monitoring control apparatus E, or may be designated by an operator (operator) or the like by inputting values in a timely manner.

  In the example of FIG. 12, the data deletion determination unit 5 executes the loop of FIG. 13 every hour. Therefore, the data deletion determination unit 5 acquires the stored data amount when one hour has elapsed after detecting the abnormality of the communication network N in step S1 (step S61). Next, the data deletion determination unit 5 refers to the priority information (FIG. 15) and the deletion condition information (FIG. 16) stored in the database memory 4 (step S62). In the example of FIG. 12, the database memory 4 stores the example illustrated in FIG. 15 as the priority information, and stores the example illustrated in FIG. 16 as the deletion condition information. It is assumed that the amount of stored data is 7 megabytes when 1 hour has passed since the abnormality of the communication network N was detected. In this case, it can be seen from FIGS. 15 and 16 that none of the data types 1001 to 1004 having the priorities 1 to 4 is the object of deletion. Therefore, the data deletion determination unit 5 waits for the specified time of 1 hour to pass without instructing the data deletion processing unit 6 to delete the measurement data.

  When two hours have elapsed after the abnormality of the communication network N is detected, the data deletion determination unit 5 acquires the stored data amount again (step S63). Next, the data deletion determination unit 5 refers to priority information (FIG. 15) and deletion condition information (FIG. 16) stored in the database memory 4 (step S64). At this time, it is assumed that the amount of stored data is 27 megabytes. In this case, it can be seen from FIGS. 15 and 16 that the data type 1001 with priority 1, the data type 1002 with priority 2 and the data type 1003 with priority 3 are to be deleted. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data types 1001, 1002, and 1003 from the data memory 3 (step S65). In response to this, the data deletion processing unit 6 deletes the measurement data of the data types 1001, 1002, and 1003 from the data memory 3 (step S66). Thereby, the measurement data of the data types 1001, 1002, and 1003 disappear from the data memory 3 (step S67).

  When 3 hours have elapsed after the abnormality of the communication network N is detected, the data deletion determination unit 5 acquires the stored data amount again (step S68). Next, the data deletion determination unit 5 refers to priority information (FIG. 15) and deletion condition information (FIG. 16) stored in the database memory 4 (step S69). At this time, it is assumed that the amount of stored data is 23 megabytes. In this case, it can be seen from FIGS. 15 and 16 that the data type 1001 with priority 1 and the data type 1002 with priority 2 are to be deleted. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data types 1001 and 1002 from the data memory 3 (step S70). In response to this, the data deletion processing unit 6 deletes the measurement data of the data types 1001 and 1002 from the data memory 3 (step S71). Thereby, the measurement data of the data types 1001 and 1002 disappear from the data memory 3 (step S72).

  Assume that nine measurement data illustrated in FIG. 17 are written in the data memory 3 immediately before the measurement data of the data types 1001 and 1002 are deleted in step S71. In FIG. 17, six pieces of measurement data corresponding to any of the data types 1001 and 1002 are included. Therefore, when the data deletion processing unit 6 deletes the measurement data of the data types 1001 and 1002 from the data memory 3, only the three measurement data shown in FIG.

  Returning to FIG. 12 again, when 4 hours have elapsed after the abnormality of the communication network N is detected, the data deletion determination unit 5 acquires the stored data amount again (step S73). Next, the data deletion determination unit 5 refers to the priority information (FIG. 15) and the deletion condition information (FIG. 16) stored in the database memory 4 (step S74). At this time, it is assumed that the amount of stored data is 30 megabytes. In this case, it can be seen from FIGS. 15 and 16 that the data type 1001 with priority 1, the data type 1002 with priority 2 and the data type 1003 with priority 3 are to be deleted. Therefore, the data deletion determination unit 5 instructs the data deletion processing unit 6 to delete the measurement data of the data types 1001, 1002, and 1003 from the data memory 3 (step S75). In response to this, the data deletion processing unit 6 deletes the measurement data of the data types 1001, 1002, and 1003 from the data memory 3 (step S76). Thereby, the measurement data of the data types 1001, 1002, and 1003 disappear from the data memory 3 (step S77). Thereafter, the processing similar to steps S73 to S77 is repeated every hour (specified time) until the data deletion determination unit 5 detects the restoration of the communication network N (step S18).

  As described above, the equipment monitoring and control system according to the present embodiment, as in the first embodiment, provides measurement data with high priority, that is, high importance when abnormality occurs in the communication network N. Since the measurement data is selectively deleted from the data memory 3 so as to preferentially remain, the same effect as in the first embodiment can be obtained. Further, as the amount of stored data stored in the data memory 3 is larger, measurement data including higher priority data is deleted from the data memory. Accumulation in the data memory 3 can be prevented. That is, accumulation of a large amount of measurement data in the data memory 3 can be more effectively suppressed. In addition, since the amount of data stored in the data memory 3 is directly controlled, it is possible to more easily prevent overflow of the data memory 3 and loss of highly important measurement data.

  The CPU operates based on software (program) stored in a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory) (not shown). This software is a transmission medium including the communication network N. It is also possible to provide it through a recording medium such as a CD-ROM.

1 is a block diagram of a facility monitoring control system according to a first embodiment of the present invention. It is a block diagram which shows the structure of the installation system S of FIG. It is a block diagram which shows the structure of the equipment monitoring control apparatus E of FIG. It is explanatory drawing which shows an example of the priority information by the 1st Embodiment of this invention in a table format. It is explanatory drawing which shows an example of the deletion condition information by the 1st Embodiment of this invention in a table format. It is a flowchart which shows the operation | movement procedure of the equipment monitoring control system by the 1st Embodiment of this invention. It is a flowchart which shows the procedure of the abnormality detection process of the data transmission part by the 1st Embodiment of this invention. It is a flowchart which shows the procedure of the abnormality detection process of the deletion determination part by the 1st Embodiment of this invention. It is a flowchart which shows the process sequence of the data deletion determination part by the 1st Embodiment of this invention. It is explanatory drawing which shows an example of the measurement data written in the data memory of FIG. 3 in a table format. It is explanatory drawing which shows an example of the measurement data written in the data memory of FIG. 3 in a table format. It is a flowchart which shows the operation | movement procedure by the equipment monitoring control system by the 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the data deletion determination part by the 2nd Embodiment of this invention. It is explanatory drawing which shows the process of detecting the storage data capacity | capacitance of the data memory by the 2nd Embodiment of this invention. It is explanatory drawing which shows an example of the priority information by the 2nd Embodiment of this invention in a table format. It is explanatory drawing which shows an example of the deletion condition information by the 2nd Embodiment of this invention in a table format. It is explanatory drawing which shows an example of the measurement data written in the data memory of FIG. 3 in a table format. It is explanatory drawing which shows an example of the measurement data written in the data memory of FIG. 3 in a table format.

Explanation of symbols

1 Equipment Communication Department (equipment communication means)
2 Data writing part (data writing means)
3 Data memory 4 Database memory 5 Data deletion determination unit (data deletion determination means)
6 Data deletion processing section (data deletion processing means)
7 Data transmission part (data transmission means)
21, 22, 23 Equipment 101 Equipment monitoring and control system E Equipment monitoring and control device F Equipment management server N Communication network

Claims (6)

Facility communication means for collecting measurement data from the facility group to be monitored and controlled;
Data memory,
Data writing means for writing the collected measurement data into the data memory;
Data transmission means for reading the measurement data from the data memory, and transmitting the read measurement data to a facility management server via a communication network;
Stores priority information that defines a priority for each type of measurement data and deletion condition information that preferentially deletes the condition for deleting the measurement data from the data memory as the priority is lower Database memory to
Data for determining what to delete among the measurement data written in the data memory by referring to the priority information and the deletion condition information stored in the database memory when the communication network is abnormal Delete determination means;
An equipment monitoring control device comprising: a data deletion processing unit that deletes data measured by the data deletion determination unit that is determined to be deleted from the measurement data written in the data memory.   The equipment monitoring control device according to claim 1, wherein the deletion condition information defines the condition such that measurement data having a higher priority is deleted from the data memory as the duration of abnormality of the communication network is longer. .   The equipment monitoring according to claim 1, wherein the deletion condition information defines the condition such that measurement data having a higher priority or lower is deleted from the data memory as the amount of stored data stored in the data memory is larger. Control device. The equipment monitoring control device according to any one of claims 1 to 3,
A facility group that is a monitoring control target for collecting the measurement data by the facility communication means;
An equipment management server connected to the data transmission means via a communication network and receiving the measurement data transmitted by the data transmission means. An equipment communication process for collecting measurement data from the equipment group to be monitored and controlled;
A data writing step of writing the collected measurement data into a data memory;
A data transmission step of reading the measurement data from the data memory and transmitting the read measurement data to a facility management server via a communication network;
Information stored in the database memory when the communication network is abnormal, the priority information defining the priority for each type of the measurement data, and the condition for deleting the measurement data from the data memory A data deletion determination step of determining what should be deleted among the measurement data written in the data memory by referring to the deletion condition information that is preferentially deleted as the lower one,
A facility monitoring control method, comprising: a data deletion processing step of deleting the measurement data written in the data memory, which has been determined to be deleted by the data deletion determination step. In equipment monitoring and control device equipped with data memory and database memory,
Equipment communication function that collects measurement data from the equipment group that is the object of monitoring and control,
A data writing function for writing the collected measurement data to the data memory;
A data transmission function for reading the measurement data from the data memory and transmitting the read measurement data to a facility management server via a communication network;
Information stored in the database memory when the communication network is abnormal, the priority information defining the priority for each type of the measurement data, and the condition for deleting the measurement data from the data memory A data deletion determination function for determining what should be deleted among the measurement data written in the data memory by referring to the deletion condition information that is preferentially deleted as the lower one,
A facility monitoring control program that realizes a data deletion processing function for deleting data determined to be deleted by the data deletion determination function from among the measurement data written in the data memory.