JP6371651B2 - Data recording system and method - Google Patents

Description

  The present invention relates to a data management technique, and more particularly to a data recording technique for recording collected measurement data as a series of data series for each measurement target of the measurement data.

In facilities such as factories, plants, and buildings, automatic operation and monitoring of facilities are realized by introducing a facility management system that remotely controls various field devices using a controller such as an industrial controller.
In such a facility management system, it is extremely useful to check the time-series changes of the measurement data measured by each field device when monitoring and maintaining the facility, and malfunctions and abnormalities of various facilities can be detected early. It can be discovered efficiently.

  Therefore, in the facility management system, for the monitoring and maintenance of the facility, the measurement data measured by each field device is sequentially collected by the data recording system via the control device or gateway, and a series of data series for each measurement target. (See, for example, Patent Document 1). Thereby, in response to a browsing request from the management terminal, the measurement data of the designated data series is read and distributed, so that a time series graph or table can be displayed on the screen of the management terminal.

JP 2003-067049 A

Such a data recording system is required to continuously record measurement data over a long period of time. For this reason, from the viewpoint of reliability, a configuration is considered in which the data recording function is made redundant so that the recording of measurement data does not stop due to a failure occurring in the data recording system.
At this time, for example, a plurality of data recording devices responsible for the data recording function are provided and made redundant, and the measurement data collected by the data collection device from the facility management system is distributed to these data recording devices in parallel and received by each data recording device. A configuration in which measurement data is recorded in each storage unit is common.

  However, in such a configuration, each data recording device separately records the measurement data received from the data collection device, so that the recording contents may differ due to factors such as a communication error. Therefore, in order to collate the recorded contents with each other, it is necessary to exchange collation data between these data recording devices in parallel with the collected measurement data. For this reason, the processing load of each data recording device increases, and the traffic on the communication line connecting the data recording devices increases, which causes a delay or failure of the original measurement data recording processing. there were.

  An object of the present invention is to solve such a problem, and an object of the present invention is to provide a data recording technique capable of reducing a processing burden for collating recorded contents in each data recording apparatus.

In order to achieve such an object, a data recording system according to the present invention includes a data collection device that collects various measurement data measured by a facility management system, and the measurement data transmitted from the data collection device. A main data recording device for recording by the device, and a sub data recording device for recording the measurement data transmitted from the main data recording device by the own device , wherein the main data recording device is transmitted from the data collecting device. Log data related to the measurement data including the measurement data is generated, and a new log number corresponding to the recording order of the log data is assigned to the log data and recorded by the own device. The sub data recording device records the log data transmitted from the main data recording device by itself. Both log data related to the measurement data including the measurement data transmitted from the data collection device when a failure occurs in the main data recording device when the measurement data included in the log data is recorded by the own device. Generate and record a new log number corresponding to the recording order of the log data to the log data and record it by the own device, and recorded in the supplement request according to the supplement request from the main data recording device The log data to which the log number after the log number is assigned is returned to the main data recording device, and when the failure in the own device is recovered, the main data recording device is the last in the own device before the failure. The supplement request specifying the log number of the recorded log data as the recorded log number is transmitted, and the log data returned from the sub data recording device in response to the request is transmitted. The addition to recording by the own device, in which so as to complement the measurement data becomes unrecorded in the failure by recording the measurement data included in the log data.

In addition, one configuration example of the data recording system according to the present invention corresponds to the transmission order of the measurement data when the data collection device transmits the measurement data to the main data recording device or the sub data recording device. The data number is assigned to the measurement data and transmitted, and the measurement data is temporarily stored in its own device. If a transmission request is received from the main data recording device or the sub data recording device, the data is temporarily stored. Among the measurement data, the measurement data to which the data number after the recorded data number specified in the transmission request is assigned is read and returned, and the sub data recording device has a failure in the main data recording device. When it occurs, the transmission request specifying the data number of the measurement data recorded last by the device as the recorded data number is sent to the data The main data recording device transmits the transmission request specifying the data number of the measurement data recorded last by the own device as a recorded data number when the failure of the own device is recovered. The data is transmitted to the collection device.

The data recording method according to the present invention includes a data collection step in which the data collection device collects various measurement data measured by the facility management system, and the main data recording device in the measurement collected in the data collection step. A main data recording step for recording data by the own device, a sub data recording device for recording the measurement data transmitted in the main data recording step by the own device, and the main data recording device, Generates log data related to the measurement data including the measurement data transmitted from the data collection device, assigns a new log number corresponding to the recording order of the log data to the log data, and records it on the own device Transmitting the log data to the sub data recording device, and the sub data recording device The log data transmitted from the device is recorded by the own device, the measurement data included in the log data is recorded by the own device, and the sub data recording device has a failure in the main data recording device. At this time, log data related to the measurement data including the measurement data transmitted from the data collection device is generated, and a new log number corresponding to the recording order of the log data is assigned to the log data and recorded by the own device. And returning the log data to which the log number after the recorded log number specified in the complement request is given in response to the complement request from the main data recording device to the main data recording device; When the main data recording device recovers from a failure in its own device, the log number of the log data last recorded in its own device before the failure is recorded in the recorded log. The failure request is made by recording the log data returned from the sub-data recording device in response to the supplement request specified as a signal and recording the measurement data included in the log data. And a step of complementing the measurement data that has not been recorded in step (b).
In addition, one configuration example of the data recording method according to the present invention corresponds to the transmission order of the measurement data when the data collection device transmits the measurement data to the main data recording device or the sub data recording device. The data number is assigned to the measurement data and transmitted, and the measurement data is temporarily stored in its own device. If a transmission request is received from the main data recording device or the sub data recording device, the data is temporarily stored. Reading out and returning the measurement data to which the data number after the recorded data number specified in the transmission request is given, and the sub data recording device is the main data recording device When a failure occurs, the transmission request specifying the data number of the measurement data last recorded by the own device as the recorded data number Transmitting to the data collection device, and when the main data recording device recovers from the failure in the own device, the transmission request specifying the data number of the measurement data recorded last in the own device as the recorded data number Transmitting to the data collection device.

  According to the present invention, various measurement data measured by the facility management system are serially transferred from the data collection device to the main data recording device, and from the main data recording device to the sub data recording device, and recorded respectively. Will be. Therefore, since the sub data recording device receives the measurement data recorded in the main data recording device and records it in its own device, the content recorded by the sub data recording device must match the recording content of the main data recording device. become.

  For this reason, after recording measurement data, there is no need to separately exchange verification data between the main data recording device and the sub data recording device to verify the recorded contents. As a result, it is possible to avoid an increase in processing load on each data recording device and an increase in traffic on the communication line connecting the data recording devices due to collation of the recorded contents, and smooth the recording processing of the original measurement data. The reliability and quality can be improved.

It is a block diagram which shows the structure of a data recording system. It is a structural example of measurement data. It is a memory | storage example of the measurement data in a data storage part. It is a structural example of log data. It is a sequence diagram which shows the recording operation | movement of the measurement data at the time of normal. FIG. 10 is a sequence diagram showing a recording switching operation when a failure occurs. It is a sequence diagram which shows the recording switching operation at the time of failure recovery. It is an example of operation | movement of a data recording system (at the time of normal-failure occurrence). It is an example of operation | movement (at the time of failure recovery) of a data recording system.

Next, an embodiment of the present invention will be described with reference to the drawings.
[Data recording system]
First, a data recording system 1 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the data recording system.

  The data recording system 1 includes a plurality of information processing devices such as a server device as a whole, collects various measurement data from the facility management system 5 and records them as a series of data series for each measurement target. In response to the browsing request, the designated data series measurement data is distributed to display a time series graph or table on the management terminal 40 on the screen.

The facility management system 5 uses a control device 51 such as an industrial controller in a facility such as a factory, plant, or building to remotely control various field devices 52 connected to the facility, thereby automatically controlling the facility. It is a system that operates and monitors.
The data collection device 53 has a function of collecting measurement data acquired from the field device 52 by the control device 51 by performing data communication with each control device 51 via the lower communication line L5.

  The gateway GW has a function of relaying and connecting the upper communication line L1 and the lower communication line L5 to which the data recording system 1 and the management terminal 40 are connected. The data recording system 1 collects various measurement data from the data collection device 53 and the control device 51 of the facility management system 5 via the gateway GW.

[Configuration of the embodiment]
Next, the configuration of the data recording system 1 according to the present embodiment will be described in detail with reference to FIG.
The data recording system 1 includes a main data recording device 10, a sub data recording device 20, and a data collection device 30 as main devices. These are connected to the upper communication line L1 and can exchange various data and messages with each other.

  In the present invention, measurement data is sequentially collected from the facility management system 5 by the data collection device 30, the main data recording device 10 records the measurement data transmitted from the data collection device 30, and the sub data recording device 20 By recording the measurement data transmitted from the main data recording device 10 by itself, the measurement is performed in series from the data collecting device 30 to the main data recording device 10 and from the main data recording device 10 to the sub data recording device 20. Data is transferred and recorded respectively.

  Further, when a failure occurs in the main data recording device 10, the sub data recording device 20 records the measurement data transmitted from the data collecting device 30 by itself, and the failure recovery in the main data recording device 10 is performed. Accordingly, the main data recording device 10 receives and supplements the measurement data recorded by the sub data recording device 20 during the failure occurrence period.

  At this time, in response to a transmission request from the main data recording device 10 or the sub data recording device 20, the data collection device 30 newly adds to either the main data recording device 10 or the sub data recording device 20 that is the request source. The sub data recording device 20 transmits a transmission request to the data collecting device 30 and transmits it from the data collecting device 30 when a failure occurs in the main data recording device 10. Recording of incoming measurement data is started.

  Further, the sub data recording device 20 returns the measurement data recorded by the own device after the occurrence of the failure in the main data recording device 10 in response to the complement request from the main data recording device 10 to the main data recording device 10. When the failure of the own device is recovered, the recording device 10 transmits a complement request to the secondary data recording device 20, and records the measurement data returned from the secondary data recording device 20 in response to the request. The measurement data that has not been recorded due to the failure is complemented, a transmission request is transmitted to the data collection device 30, and recording of measurement data transmitted from the data collection device 30 thereafter is resumed. .

[Main data recording device]
The main data recording device 10 includes a data management unit (main data management unit) 11, a data storage unit (main data storage unit) 12, and a log storage unit (main log storage unit) 13 as main functional units. ing. Among these functional units, the data management unit 11 includes a CPU and its peripheral circuits, and includes an arithmetic processing unit that performs various processes by executing programs on the CPU. Further, the data storage unit 12 and the log storage unit 13 are configured by a storage device such as a hard disk or a semiconductor memory.

  The data management unit 11 has a function of receiving measurement data from the data collection device 30, a function of recording the received measurement data in the data storage unit 12 for each data series, these recorded measurement data, and main data of these measurement data A function of generating log data including data numbers corresponding to the order of transmission to the recording device 10, assigning log numbers corresponding to the recording order of the log data to the log data, and recording the log data in the log storage unit 13; In response to the function of transmitting data to the sub data recording device 20 and the browsing request from the management terminal 40, the measurement data of the designated data series is read from the data storage unit 12 and distributed to the management terminal 40, so that It has a function of displaying a series graph or table on the management terminal 40.

  In addition, the data management unit 11 designates the log number assigned to the log data last recorded in the log storage unit 13 as the recorded log number as a function related to the recovery of the failure that occurred in the own device. The function of transmitting a complement request for requesting complement of unrecorded measurement data collected during the occurrence period to the secondary data recording device 20 and the log data returned from the secondary data recording device 20 in response to the complement request are received. A function for recording in the log storage unit 13 and a function for complementing the measurement data that could not be recorded during the failure occurrence period by recording the measurement data included in the received log data in the data storage unit 12. doing.

  Further, the data management unit 11 sends a transmission request specifying the data number assigned to the measurement data last recorded in the data storage unit 12 among the supplemented measurement data as the recorded data number. A function of transmitting to the data storage unit 12, a function of receiving the measurement data returned from the data collection device 30 in response to the transmission request and recording it in the data storage unit 12, and assigning a log number to the log data generated from the measurement data A log recording unit 13 and a function of transmitting the recorded log data to the sub data recording device 20.

The data storage unit 12 has a function of storing the measurement data input from the data management unit 11 for each data series.
FIG. 2 is a configuration example of measurement data. The measurement data includes a data series ID for identifying the data series, a time stamp indicating the date and time when the measurement data was measured, and a measurement value. The data number corresponding to the order of transmission to the main data recording device 10 is data collection. Provided by the device 30. This data number is a recorded data number indicating recorded measurement data when the main data recording device 10 or the sub data recording device 20 requests the data collection device 30 to transmit measurement data that could not be recorded. Used as

FIG. 3 is a storage example of measurement data in the data storage unit. Each measurement data is stored in time series for each data series in the data storage unit 12.
In the present invention, the data series refers to a measurement data string related to the same measurement object measured by the same field device 52, and measurement data is recorded for each data series. In the facility management system 5, in general, a management point having a unique point address is assigned to each interface to which the control device 51 controls and manages the field device 52, and monitoring and maintenance of the facility is performed. When performing, the measurement data is confirmed in time series for each management point. Therefore, a point address may be used as the data series ID.

The log storage unit 13 includes a storage device such as a hard disk or a semiconductor memory, and has a function of storing log data input from the data management unit 11.
FIG. 4 is a configuration example of log data. Here, a plurality of measurement data and the respective data numbers that are collectively recorded in the data storage unit 12 by the data management unit 11 are recorded as one log data, and the log data is recorded with respect to the log data. A log number unique to each log data according to the order is given by the data management unit 11.

  Since the data collection device 30 collects various measurement data from the facility management system 5 at a fixed collection interval, a plurality of measurement data measured during the collection interval is collected in a lump and the main data recording device 10 is transmitted. Therefore, the data management unit 11 collects the plurality of measurement data into one log data and records it in the log storage unit 13 as a history indicating measurement data recording processing.

  At this time, the data management unit 11 assigns a unique log number to each log data corresponding to the log data recording order and records the log data in the log storage unit 13. This log number is recorded when the main data recording device 10 or the sub data recording device 20 requests the sub data recording device 20 or the main data recording device 10 to transmit log data that could not be recorded. Used as a recorded log number indicating log data.

[Sub data recording device]
The sub data recording device 20 includes a data management unit (sub data management unit) 21, a data storage unit (sub data storage unit) 22, and a log storage unit (sub log storage unit) 23 as main functional units. ing. Among these functional units, the data management unit 21 includes a CPU and its peripheral circuits, and includes an arithmetic processing unit that performs various processes by executing programs on the CPU. Further, the data storage unit 22 and the log storage unit 23 are constituted by a storage device such as a hard disk or a semiconductor memory. Note that the data storage unit 22 and the log storage unit 23 are the same as the data storage unit 12 and the log storage unit 13, and a detailed description thereof is omitted here.

  The data management unit 21 has a function of receiving log data from the main data recording device 10, a function of recording the received log data in the log storage unit 23 together with a log number assigned to the log data, and a received log It has a function of recording measurement data included in the data into the data storage unit 22 for each data series.

  In addition, when a failure occurs in the main data recording device 10, the data management unit 21 sends a transmission request that designates the data number assigned to the measurement data last recorded in the data storage unit 22 as the recorded data number. Is transmitted to the data collection device 30, a function for starting measurement processing received from the data collection device 30 and recording it in the data storage unit 22, and transmission from the main data recording device 10. In response to the completion request, the log data having a log number after the recorded log number specified in the completion request is read from the log storage unit 23 and returned to the main data recording device 10. doing.

  In addition, the data management unit 21 designates the log number assigned to the log data last recorded in the log storage unit 23 as the recorded log number as a function related to the recovery of the failure that occurred in its own device. The function of transmitting a complement request for requesting complement of unrecorded measurement data collected during the occurrence period to the main data recording device 10 and the log data returned from the main data recording device 10 in response to the complement request are received. A function for recording in the log storage unit 23 and a function for complementing the measurement data that could not be recorded during the failure occurrence period by recording the measurement data included in the received log data in the data storage unit 22. doing.

[Data collection device]
The data collection device 30 is provided with a data collection unit 31 and a temporary storage unit 32 as main functional units. Among these functional units, the data collection unit 31 includes a CPU and its peripheral circuits, and is configured from an arithmetic processing unit that performs various processes by executing programs on the CPU. The temporary storage unit 32 includes a storage device such as a hard disk or a semiconductor memory.

  The data collection unit 31 has a function of collecting various measurement data measured by the facility management system 5 via the gateway GW and the upper communication line L1, and the collected measurement data in the order of transmission of the measurement data (collection order). A function of assigning a corresponding data number and transmitting it to the main data recording device 10, a function of recording the collected measurement data together with the data number in the temporary storage unit 32, and transmission from the main data recording device 10 or the sub data recording device 20 In response to the requested transmission, a function for switching the transmission destination of the measurement data to the requested main data recording device 10 or sub data recording device 20 and a data number after the recorded data number specified in the transmission request are given. A function of reading out the measured data from the temporary storage unit 32 and returning it.

  The temporary storage unit 32 has a function of temporarily storing the measurement data input from the data collection unit 31 together with the data number, and when the measurement data exceeds the storage capacity, the temporary storage unit 32 newly collects the most recently recorded measurement data. It has a function to overwrite measurement data. The storage example of the measurement data in the temporary storage unit 32 is the same as in FIG. 2 described above, and each measurement data is stored with a data number according to the transmission order.

[Operation of this embodiment]
Next, the operation of the data recording system 1 according to the present embodiment will be described with reference to the drawings.

[Normal operation]
First, with reference to FIG. 5, the measurement data recording operation in the normal state will be described. FIG. 5 is a sequence diagram showing a recording operation of measurement data at a normal time. Here, it is assumed that both the main data recording device 10 and the sub data recording device 20 are operating normally, and the transmission destination of the measurement data from the data collection device 30 is switched to the main data recording device 10.

  First, the data collection unit 31 of the data collection device 30 collects various measurement data measured by the facility management system 5 via the gateway GW and the upper communication line L1 (step 100), and sets the data numbers according to the transmission order. The data is assigned and recorded in the temporary storage unit 32 (step 101), and is transmitted to the main data recording device 10 via the host communication line L1 (step 102).

The data management unit 11 of the main data recording device 10 records the measurement data received from the data collection device 30 in the data storage unit 12 for each data series (step 103), and includes a log including the recorded measurement data and data number Data is generated, and a log number corresponding to the recording order of the log data is assigned to the log data and recorded in the log storage unit 13 (step 104).
Thereafter, the data management unit 11 transmits the recorded log data together with the log number to the sub data recording device 20 via the upper communication line L1 (step 105).

  The data management unit 21 of the sub data recording device 20 records the log data received from the main data recording device 10 together with the log number in the log storage unit 23 (step 106), and the measurement included in the log data. Data is recorded in the data storage unit 22 for each data series (step 107).

  Thereby, when the main data recording device 10 and the sub data recording device 20 are operating normally, the measurement data is sequentially collected from the facility management system 5 by the data collection device 30 and transmitted from the data collection device 30. Is recorded by the main data recording device 10 and the measurement data transmitted from the main data recording device 10 is recorded by the sub data recording device 20. Therefore, the measurement data collected by the data collection device 30 is transferred in series from the data collection device 30 to the main data recording device 10 and from the main data recording device 10 to the sub data recording device 20, respectively. To be recorded.

[When an error occurs]
Next, a recording switching operation when a failure occurs in the main data recording apparatus 10 will be described with reference to FIG. FIG. 6 is a sequence diagram showing a recording switching operation when a failure occurs.

  First, when a failure occurs in the main data recording device 10 (step 110), the data management unit 21 of the sub data recording device 20 finally checks the data storage unit 22 in response to the failure occurrence confirmation (step 111). A transmission request in which the data number assigned to the recorded measurement data is designated as the recorded data number is transmitted to the data collection device 30 via the upper communication line L1 (step 112).

  At this time, regarding the failure occurrence confirmation, the data management unit 21 may confirm the failure occurrence in the main data recording device 10 in accordance with an instruction from the management terminal 40 or an operation input in the sub data recording device 20. The data management unit 21 monitors the interval between log data and messages transmitted from the main data recording device 10 and confirms that a failure has occurred in the main data recording device 10 when it has not arrived for a certain time. May be.

  In response to the transmission request transmitted from the sub data recording device 20, the data collection unit 31 of the data collection device 30 determines whether there is measurement data to which a data number after the recorded data number specified in the transmission request is assigned. Is confirmed in the temporary storage unit 32 (step 113), and when the corresponding measurement data exists, these measurement data are returned to the sub data recording device 20 as complementary measurement data (step 114). Further, the data collection unit 31 switches the transmission destination of the measurement data collected thereafter from the main data recording device 10 to the sub data recording device 20 in response to a transmission request from the sub data recording device 20 (step 115).

  In response to the transmission request, the data management unit 21 of the sub data recording device 20 records the complementary measurement data from the data collection device 30 to the data storage unit 22 for each data series (step 116), and the recorded complementary measurement data and data Log data including a number is generated, and a log number corresponding to the recording order of the log data is assigned to the log data and recorded in the log storage unit 23 (step 117).

  Therefore, thereafter, the data collection unit 31 of the data collection device 30 collects various measurement data measured by the facility management system 5 via the gateway GW and the upper communication line L1 (step 120), and corresponds to the transmission order. The data number is assigned and recorded in the temporary storage unit 32 (step 121), and transmitted to the sub data recording device 20 via the upper communication line L1 (step 122).

  The data management unit 21 of the sub data recording device 20 records the measurement data received from the data collection device 30 in the data storage unit 22 for each data series (step 123), and includes a log including the recorded measurement data and data number. Data is generated, and a log number corresponding to the recording order of the log data is assigned to the log data and recorded in the log storage unit 23 (step 124).

  Thereby, when a failure occurs in the main data recording apparatus 10, the transmission destination of the measurement data transmitted from the data collection apparatus 30 is sent from the main data recording apparatus 10 in response to the transmission request from the sub data recording apparatus 20. The measurement data collected by the data collection device 30 during the failure occurrence period is switched to the secondary data recording device 20 and transmitted to the secondary data recording device 20 for recording.

[When recovering from a failure]
Next, with reference to FIG. 7, the recording switching operation at the time of failure recovery in the main data recording apparatus 10 will be described. FIG. 7 is a sequence diagram showing a recording switching operation at the time of failure recovery.

  The data management unit 11 of the main data recording device 10 uses the log number assigned to the log data last recorded in the log storage unit 13 as the recorded log number in response to the failure recovery in the own device (step 130). The designated complement request is transmitted to the sub data recording device 20 via the higher-order communication line L1 (step 131).

  In response to a complement request from the main data recording device 10, the data management unit 21 of the secondary data recording device 20 determines whether there is log data to which a log number after the recorded log number specified in the complement request is assigned. Confirmation is made in the log storage unit 23 (step 132). If the corresponding log data exists, these log data are returned to the main data recording apparatus 10 as complementary log data (step 133).

  The data management unit 11 of the main data recording device 10 records the complementary log data returned from the sub data recording device 20 in the log storage unit 13 (step 134), and the measurement data included in these complementary log data. Each data series is recorded in the data storage unit 12 (step 135).

  Thereafter, the data management unit 11 collects the transmission request specifying the data number assigned to the measurement data recorded last in the data storage unit 12 as the recorded data number via the upper communication line L1. It transmits to the apparatus 30 (step 140).

  In response to the transmission request transmitted from the main data recording device 10, the data collection unit 31 of the data collection device 30 has the presence or absence of measurement data to which a data number after the recorded data number specified in the transmission request is assigned. Is confirmed in the temporary storage unit 32 (step 141), and if the corresponding measurement data exists, these measurement data are returned to the main data recording apparatus 10 as complementary measurement data (step 142). Further, in response to a transmission request from the main data recording device 10, the data collection unit 31 switches the transmission destination of the measurement data collected thereafter from the data recording device 20 to the sub main data recording device 10 (step 143).

The data management unit 11 of the main data recording device 10 records the complementary measurement data returned from the data collection device 30 in response to the transmission request in the data storage unit 22 for each data series (step 144), and the recorded complementary measurement. Log data including the data and the data number is generated, and a log number corresponding to the recording order of the log data is assigned to the log data and recorded in the log storage unit 23 (step 145).
Thereafter, the data management unit 11 transmits the recorded log data together with the log number to the sub data recording device 20 via the upper communication line L1 (step 146).

  The data management unit 21 of the sub data recording device 20 records the log data received from the main data recording device 10 together with the log number in the log storage unit 23 (step 147), and the measurement included in the log data. Data is recorded in the data storage unit 22 for each data series (step 148).

  Thereby, when the failure is recovered in the main data recording device 10, the measurement data recorded in the sub data recording device 20 in the failure occurrence period is the main data in response to the supplement request from the main data recording device 10. The measurement data that has been transmitted to the recording device 10 and has not been recorded when the main data recording device 10 has failed is supplemented. Further, in response to a transmission request from the main data recording device 10, the transmission destination of the measurement data transmitted from the data collecting device 30 is switched from the sub data recording device 20 to the main data recording device 10, and the data collecting device after failure recovery The measurement data collected at 30 is transmitted to the main data recording device 10 and recorded.

[Operation example of this embodiment]
Next, an operation example of the data recording system 1 according to the present embodiment will be described with reference to FIGS. FIG. 8 shows an operation example of the data recording system (normal time—when a failure occurs). FIG. 9 is an operation example of the data recording system (at the time of failure recovery).

  First, as shown in FIG. 8, when both the main data recording device 10 and the sub data recording device 20 are operating normally, the measurement data (data number D1) collected by the data collecting device 30 is the main data recording device. The data is transmitted to the apparatus 10 and recorded as record data in the data storage unit 12, and the log data (log number L 1) is generated and recorded in the log storage unit 13. The log data (log number L1) is transmitted to the sub-data recording device 20 and recorded in the log storage unit 23, and the measurement data (data number D1) included in the log data (log number L1) is data. It is recorded in the storage unit 22.

  Here, when a failure occurs in the main data recording device 10, a transmission request is sent from the sub data recording device 20 with the data number D 1 of the count data recorded last in the sub data recording device 20 as the recorded data number. It is transmitted to the collection device 30. In response to this, from the measurement data collected by the data collection device 30 and temporarily stored in the temporary storage unit 32, the measurement data after the recorded data number D1 specified by the transmission request (data numbers D2, D3) ) Is read, and the complementary measurement data including these measurement data (data numbers D2 and D3) is transmitted from the data collection device 30 to the sub data recording device 20.

The supplementary measurement data is received by the sub data recording device 20 and recorded in the data storage unit 22 as recording data, and the log data (log number L2) is generated and recorded in the log storage unit 23. At this time, two pieces of measurement data (data numbers D2 and D3) included in the same complementary measurement data are recorded as one log data.
Further, since the transmission destination of the measurement data transmitted from the data collection device 30 is switched to the sub data recording device 20 by the transmission request, new measurement data (data number D4) collected by the data collection device 30 thereafter Is transmitted to the sub data recording device 20 and recorded in the data storage unit 22 as recording data, and the log data (log number L3) is generated and recorded in the log storage unit 23.

  Next, as shown in FIG. 9, when the failure in the main data recording device 10 is recovered, the log number L1 of the last recorded log data is recorded from the main data recording device 10 to the sub data recording device 20. A complement request specified as a number is sent. In response to this, the log data (log numbers L2, L3) after the recorded log number D1 designated by the complement request is read from the log data recorded in the log storage unit 23 of the sub data recording device 20. Complementary log data including these measurement data (log numbers L2 and L3) is transmitted from the data collection device 30 to the sub data recording device 20.

  The complementary log data is received by the main data recording device 10 and recorded in the log storage unit 13 as log data (log numbers L2, L3), and is included in these log data (log numbers L2, L3). Measurement data (data number D4) is recorded in the data storage unit 12 as recorded data, and unrecorded measurement data is complemented.

  Thereafter, a transmission request is sent from the main data recording device 10 to the data collecting device 30 with the data number D4 of the measurement data recorded last as the recorded data number to the log storage unit 13. In response to this, measurement data (data number D5) after the recorded data number D4 designated by the transmission request is selected from the measurement data collected by the data collection device 30 and temporarily stored in the temporary storage unit 32. The read measurement data and the complementary measurement data including the measurement data (data number D5) are transmitted from the data collection device 30 to the main data recording device 10.

The complementary measurement data is received by the main data recording device 10 and recorded as recorded data in the data storage unit 12, and the log data (log number L4) is generated and recorded in the log storage unit 23. Thereafter, the log data (log number L4) is transmitted to the sub data recording device 20, recorded in the log storage unit 23, and measured data (data number D5) included in the log data (log number L4). It is recorded in the data storage unit 22.
Further, the transmission destination of the measurement data transmitted from the data collection device 30 is switched to the main data recording device 10 by the above transmission request, and the measurement data collected by the data collection device 30 thereafter is transmitted to the main data recording device 10. Is done.

[Effects of the present embodiment]
Thus, in the present embodiment, the data collection device 30 collects various measurement data measured by the facility management system 5, and the main data recording device 10 automatically collects the measurement data transmitted from the data collection device 30. The sub data recording device 20 records the measurement data transmitted from the main data recording device 10 on its own device.

  As a result, various measurement data measured by the facility management system 5 are transferred in series from the data collection device 30 to the main data recording device 10 and from the main data recording device 10 to the sub data recording device 20, respectively. Will be recorded. Therefore, since the sub data recording device 20 receives the measurement data recorded in the main data recording device 10 and records it in its own device, the content recorded by the sub data recording device 20 is the same as the recording content of the main data recording device 10. I will do it.

  For this reason, after recording measurement data, it is not necessary to separately exchange collation data between the main data recording device 10 and the sub data recording device 20 to collate recorded contents. As a result, it is possible to avoid an increase in processing load on each data recording device and an increase in traffic on the communication line connecting the data recording devices due to collation of the recorded contents, and smooth the recording processing of the original measurement data. The reliability and quality can be improved.

Further, in the present embodiment, when a failure occurs in the main data recording device 10, the sub data recording device 20 records the measurement data transmitted from the data collection device 30 by itself, and the main data recording device 10 In response to the failure recovery in the own device, the measurement data recorded in the secondary data recording device 20 during the failure occurrence period is received and the measurement data recorded in the own device is complemented. .
Thus, even when a failure occurs in the main data recording device 10 that first receives measurement data from the data collection device 30 during normal operation, each measurement data can be recorded as a data series without loss. Therefore, it is possible to accurately confirm the time series change of measurement data required when performing facility monitoring and maintenance.

  In the present embodiment, when measurement data is exchanged between the main data recording device 10 and the sub data recording device 20, log data including one or more measurement data is used as a unit instead of each measurement data. Since the data is exchanged, the received log data can be recorded as log data as it is, and the measurement data requested to be complemented can be collectively searched. Therefore, the processing load can be reduced as compared with the case where individual measurement data is taken as a unit.

  Further, in the present embodiment, the data collection device 30 is provided with the temporary storage unit 32 so that the collected measurement data is temporarily stored. Even if the time lag from the start of recording of measurement data at 20 or the time lag from the failure recovery in the main data recording device 10 to the restart of recording of measurement data is larger than the data collection interval, the measurement data collected during these time lags Can be recorded by the main data recording device 10 and the sub data recording device 20 without loss.

  In the present embodiment, when a failure occurs in the sub data recording device 20, recording of measurement data in the main data recording device 10 is continued. For this reason, after that, when the secondary data recording device 20 recovers from a failure, the secondary data recording device 20 transmits a complement request with the log number of the last recorded log data as the recorded log number to the main data recording device 10. In response to this, the complementary log data returned from the main data recording device 10 is recorded in the log storage unit 23, and the measurement data included in the complementary log data is recorded in the data storage unit 22, thereby measuring the data. You just need to supplement the data.

[Extended embodiment]
The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. In addition, each embodiment can be implemented in any combination within a consistent range.

  DESCRIPTION OF SYMBOLS 1 ... Data recording system, 10 ... Main data recording device, 11 ... Data management part, 12 ... Data storage part, 13 ... Log storage part, 20 ... Sub data recording device, 21 ... Data management part, 22 ... Data storage part, DESCRIPTION OF SYMBOLS 23 ... Log storage part, 30 ... Data collection apparatus, 31 ... Data collection part, 32 ... Temporary storage part, 40 ... Management terminal, 5 ... Facility management system, 51 ... Control apparatus, 52 ... Field apparatus, 53 ... Data collection apparatus GW ... Gateway, L1 ... Upper communication line, L5 ... Lower communication line.

Claims (4)

A data collection device for collecting various measurement data measured by the facility management system;
A main data recording device for recording the measurement data transmitted from the data collection device by itself;
A sub data recording device that records the measurement data transmitted from the main data recording device by itself ;
The main data recording device generates log data related to the measurement data including the measurement data transmitted from the data collection device, and assigns a new log number corresponding to the recording order of the log data to the log data. And recording the log data on its own device, and sending the log data to the secondary data recording device,
The sub data recording device records the log data transmitted from the main data recording device by the own device, records measurement data included in the log data by the own device, and the main data recording device has a failure. When it occurs, it generates log data related to the measurement data including the measurement data transmitted from the data collection device, and assigns a new log number corresponding to the recording order of the log data to the log data. In response to the complement request from the main data recording device, the log data to which the log number after the recorded log number specified in the complement request is given is returned to the main data recording device,
When the main data recording device recovers from a failure in the own device, the main data recording device transmits the complement request specifying the log number of the log data last recorded in the own device before the failure as the recorded log number. The log data returned from the sub data recording device according to the recording is recorded by the own device, and the measurement data included in the log data is recorded to supplement the measurement data that has not been recorded due to the failure. A data recording system characterized by this. The data recording system according to claim 1, wherein
When transmitting the measurement data to the main data recording device or the sub data recording device, the data collection device assigns a data number corresponding to the transmission order of the measurement data to the measurement data and transmits the measurement data. When data is temporarily stored in the device itself and a transmission request is received from the main data recording device or the sub data recording device, the recorded data specified by the transmission request is recorded from the temporarily stored measurement data. Read and return the measurement data with the data number after the data number,
When a failure occurs in the main data recording device, the sub data recording device transmits the transmission request specifying the data number of the measurement data last recorded by the device as a recorded data number to the data collecting device. And
The main data recording device transmits the transmission request specifying the data number of the measurement data recorded last by the own device as a recorded data number to the data collecting device when a failure in the own device is recovered. A data recording system characterized by this. A data collection step in which the data collection device collects various measurement data measured by the facility management system;
A main data recording device for recording the measurement data transmitted in the data collection step by the main device;
A sub data recording device, the sub data recording step of recording the measurement data transmitted in the main data recording step by the own device;
The main data recording device generates log data relating to the measurement data including the measurement data transmitted from the data collection device, and assigns a new log number corresponding to the recording order of the log data to the log data. Recording with the device itself, and transmitting the log data to the sub data recording device,
The sub data recording device records the log data transmitted from the main data recording device on its own device, and records measurement data included in the log data on its own device;
When the sub data recording device fails in the main data recording device, the sub data recording device generates log data related to the measurement data including the measurement data transmitted from the data collection device, and corresponds to the recording order of the log data. A new log number is assigned to the log data and recorded by the own device, and a log number after the recorded log number specified in the complement request is assigned according to the complement request from the main data recording device. Returning the log data to the main data recording device;
When the main data recording device recovers from a failure in the own device, the main data recording device transmits the complement request specifying the log number of the log data last recorded in the own device before the failure as the recorded log number. Recording the log data returned from the sub data recording device in response to the self data, and supplementing the measurement data that has not been recorded due to the failure by recording the measurement data included in the log data data recording method characterized in that it comprises and.   The data recording method according to claim 3, wherein
  When the data collection device transmits the measurement data to the main data recording device or the sub data recording device, the data collection device assigns a data number corresponding to the transmission order of the measurement data to the measurement data and transmits the measurement data. When data is temporarily stored in the device itself and a transmission request is received from the main data recording device or the sub data recording device, the recorded data specified by the transmission request is recorded from the temporarily stored measurement data. A step of reading and returning measurement data to which a data number after the data number is assigned;
  When a failure occurs in the main data recording device, the sub data recording device transmits the transmission request designating the data number of the measurement data recorded last by the own device as a recorded data number to the data collecting device. And steps to
  When the main data recording device recovers from a failure in the own device, the main data recording device transmits the transmission request specifying the data number of the measurement data recorded last in the own device as a recorded data number to the data collecting device. When
  A data recording method, further comprising:

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