JP2013020470A - Management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management system capable of managing data with high reliability.SOLUTION: In a sequencer 12, a current date after recovery from a power failure and a date just before the power failure are compared. Then total operation data collected until just before the power failure is transmitted from the sequencer 12 to a server 13 to be stored in the server 13 as a collected operation data to be transmitted at a data transfer time if the power failure does not occur. At the first data transfer time after the recovery from the power failure, collected operation data collected after the recovery from the power failure is transmitted from the sequencer 12 to the server 13 to be stored in the server 13 as collected operation data to be transmitted at the data transfer time. Further, information showing no collected operation data with date information is stored in the server 13 as information in a time for collection when operation data cannot be collected due to the power failure.

Description

  The present invention relates to a management system that centrally manages a plurality of facilities.

  For example, as a management system for a production facility that manufactures tires and golf balls, a press control sequencer disposed in each of a plurality of vulcanizing presses includes chart data construction means, and each time one vulcanization cycle is completed, There is known a method in which chart data constructed by this sequencer is moved directly to a central management computer and stored / displayed in a lump (for example, see Patent Document 1).

JP 2000-190338 A

  In such a management system, a PLC (Programmable Logic Controller), which is a PLC (Programmable Logic Controller), aggregates data such as the operation rate of each facility, and intermittently, for example, twice a day to a server away from this sequencer. Data is transferred to and stored.

  By the way, when an unexpected power failure occurs, data collection by the sequencer and data transfer to the server are not performed during the power failure. Then, after recovery from the power failure, the data before and after the power failure are added together and sent from the sequencer, and the data is stored in the server as data before the power failure, which may impair data reliability.

  An object of the present invention is to provide a management system capable of managing operation data of equipment with high reliability even when a power failure occurs.

The management system of the present invention that can solve the above-mentioned problems totals operation data transmitted from a plurality of facilities for a preset total time, and transfers it to the data transfer time when the total time has elapsed as total operation data A management system comprising: a summing unit that stores the date and time information on the totaling operation data transferred from the totaling unit;
A date and time comparison process comparing the current date and time immediately after the power failure recovery of the counting means stopped due to a power failure and the date and time immediately before the power failure;
If there is a data transfer time during a power failure, the data transfer process before the power failure that causes the totaling operation data to be aggregated immediately before the power failure to be transmitted from the aggregation means to the storage means
Aggregated operation data transmitted in the pre-power failure data transfer process, the pre-power failure data accumulation process to accumulate in the storage means as aggregate operation data to be transmitted at the data transfer time if there is no power failure,
At the time of the first data transfer after a power failure recovery, a post-recovery data transfer process that causes the totaling operation data that has been aggregated after the power failure recovery to be transmitted from the aggregation means to the storage means;
The post-recovery storage process for storing the total operation data transmitted in the post-recovery data transfer process in the storage means as the total operation data transmitted at the time of data transfer;
A power failure information storage process is performed in which the date and time information is added to the information indicating that there is no total operation data and stored in the storage unit as information at the total time when the operation data could not be totaled due to a power failure. And

  In the management system of the present invention, it is preferable that when the internal clock of the storage means reaches the data transfer time, a periodic date correction process for adjusting the internal clock of the counting means to the internal clock of the storage means is performed.

  According to the management system of the present invention, even if the counting means is stopped due to a power failure, the total operation data until immediately before the power failure is accumulated in the storage means as the total operation data transmitted at the data transfer time if there is no power failure. The total operation data totaled after the power failure recovery transmitted at the first data transfer time after the power failure recovery is stored in the storage means. Therefore, it is possible to prevent the total operation data before and after the power outage from being combined and stored in the storage means as data having a date and time that is different from the actual time, and to reduce the reliability of the operation data. In addition, as information on the total time during which operation data could not be aggregated due to a power outage, date information is added to the information indicating that there is no aggregate operation data and accumulated in the storage means. It is possible to eliminate problems that cause Thereby, data can be managed with high reliability.

It is a schematic structure figure showing one embodiment of a production facility to which a management system concerning the present invention is applied. It is a flowchart which shows the power failure recovery control in one Embodiment of the management system which concerns on this invention. It is a timing chart at the time of the power failure in one Embodiment of the management system which concerns on this invention. It is a flowchart which shows the regular date correction process in one Embodiment of the management system which concerns on this invention. It is a figure which shows an example of a regular date correction process, Comprising: (a) And (b) is a timing chart, respectively.

Hereinafter, an example of an embodiment of a management system according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the production facility including the management system 1 according to the present embodiment includes a plurality of facilities 11.
These facilities 11 are connected to one sequencer (aggregating means) 12, and for example, operation data such as an operation rate of each facility 11 is transmitted to the sequencer 12. The sequencer 12 is also called a PLC (Programmable Logic Controller), and totals operation data transmitted from the equipment 11.

  A server (storage means) 13 is connected to the sequencer 12, and data of a plurality of facilities 11 aggregated by the sequencer 12 is transferred to the server 13 as aggregate operation data. The sequencer 12 totals operation data transmitted from the plurality of facilities 11 during a preset total time, and transfers the total operation data to the server 13 at a data transfer time after the total time has elapsed. The server 13 is provided at a position away from the sequencer 12 and accumulates and stores the total operation data transferred from the sequencer 12 with date / time information that is date and time information. The server 13 is provided with an internal clock that is the source of date / time information, and the date / time of the internal clock is automatically corrected based on information from an external time server or radio clock.

  The sequencer 12 is also provided with an internal clock, and the transfer of the total operation data from the sequencer 12 to the server 13 is based on the internal clock of the sequencer 12 and the data transfer time when a preset total time has elapsed. To be done. For example, when the total time of operation data in the sequencer 12 is 12 hours from 8:30 to 20:30 and 12 hours from 20:30 to 8:30, data transfer in which the total operation data is transferred from the sequencer 12 The time is 8:30 and 20:30 twice a day, and is performed intermittently.

In the management system 1 according to the present embodiment, after a power failure occurs and the facility 11 and the management system 1 are stopped, the power failure recovery control is performed when the power is recovered from the power failure.
This power failure recovery control will be described along the flowchart shown in FIG.

  As an example, as shown in FIG. 3, the total time of operation data in the sequencer 12 is 12 hours from 8:30 to 20:30 and 12 hours from 20:30 to 8:30. After the data is transferred at 8:30 on February 1 with the data transfer time at which the operation data is transferred twice at 8:30 and 20:30, 12:00 on February 1 When a power outage occurs between 12:00 and February 2 at 12:00, and data transfer is not performed at the data transfer time 20:30 on February 1 and the data transfer time 8:30 on February 2 explain.

  When power is restored and operation of the entire management system 1 is restarted from a state where the operation of the entire management system 1 is stopped due to a power failure, first, as shown in FIG. 2, the sequencer 12 stopped due to the power failure A date and time comparison process is performed to compare the current date and time after the power failure recovery (February 2, 12:00) with the date and time immediately before the power failure (February 1, 12:00) (step S01). It is determined whether or not there is a transfer time (step S02).

  If there is a data transfer time during a power failure (step S02: Yes), a pre-power failure data transfer process is performed in which the aggregated operation data totaled immediately before the power failure is transmitted from the sequencer 12 to the server 13 as the aggregated operation data before the power failure (step). S03). Here, since the date and time immediately before the power failure is immediately before 12:00 on February 1, the current date and time after the power failure recovery after 12:00 on February 2 and the date and time immediately before the power failure are February There are two data transfer times, 20:30 on 1st and 8:30 on 2/2. The sequencer 12 transmits the total operation data totaled from the data transfer time 8:30 on February 1 before the power failure to 12:00 on February 1 at the start of the power failure to the server 13 as the total operation data before the power failure.

  Then, the total operation data before power failure transmitted in the data transfer process before power failure (step S03) is accumulated in the server 13 as total operation data to be transmitted at the data transfer time 20:30 on February 1 if there is no power failure. The data accumulation process before the power failure is performed (step S04).

  In addition, at the data transfer time of 20:30 for the first time after the power failure restoration, the total operation data collected from 12:00 to 20:30 on February 2 after the power failure restoration is restored. A post-recovery data transfer process for transmitting data from the sequencer 12 to the server 13 is performed (step S05).

  Then, the post-recovery aggregated operation data transmitted in the post-recovery data transfer process (step S05) is stored in the server 13 as the aggregated operation data transmitted at the data transfer time 20:30 on February 2. Accumulation processing is performed (step S06).

  In addition, there is no total operation data such as “0” as information in the total time from February 1 20:30 to February 2 8:30 when operation data could not be totaled due to a power failure. Is stored in the server 13 by adding date and time information to the information (step S07).

  In the case of a management system that does not perform the power failure recovery control, the data transfer time on February 1 during the power outage from 12:00 on February 1 to 12:00 on February 2 and February 2 Data transfer is not performed at the data transfer time 8:30. Then, at the data transfer time 20:30 on February 2 after the restoration of the power failure, the total operation data from 8:30 to 12:00 on February 1 and the total from February 12:00 to 20:30 Operation data is added and transferred. Then, this totaled operation data is totaled on the server 13 side at the total time from 8:30 to 20:30 on February 1 and transferred at the data transfer time 20:30 on February 1st. As the operation data, the date and time information of 20:30 on February 1 is attached and stored. For this reason, the total operation data stored in the server 13 is inaccurate, and the date and time of the total operation data is shifted by one day.

  On the other hand, when the power failure recovery control is performed after the power failure recovery as in this embodiment, even if the sequencer 12 stops due to the power failure, the total operation data up to immediately before the power failure is the data if there is no power failure. Aggregated operation data transmitted at the transfer time is accumulated in the server 13, and aggregate operation data accumulated after the power failure recovery transmitted at the first data transfer time after the power failure recovery is accumulated in the server 13. Therefore, it is possible to eliminate a decrease in data reliability due to the total operation data before and after the power failure being added and accumulated in the server 13. Moreover, since the date and time information is added to the information indicating that there is no total operation data and accumulated in the server 13 as information at the total time when the operation data could not be totaled due to a power failure, the date and time of the total operation data of the server 13 is shifted. It is possible to eliminate problems that cause Thereby, data can be managed with high reliability.

  In the management system 1 according to the present embodiment, the periodic date / time correction process for adjusting the date / time of the internal clock of the sequencer 12 to the date / time of the internal clock of the server 13 even when transferring the total operation data other than the power failure recovery control described above. I do.

  Regarding the periodic date and time correction processing at 8:30 in the case where the transfer of the total operation data from the sequencer 12 to the server 13 is performed twice a day at the set data transfer times of 8:30 and 20:30, This will be described with reference to the flowchart shown in FIG.

First, the server 13 acquires the time of the internal clock of the server 13 (step S11).
When the time of the internal clock of the server 13 is 8:30 or 20:30 which is a preset data transfer time (step S12: Yes), the server 13 acquires the time of the internal clock of the sequencer 12 (step S12). S13).

Next, the server 13 creates serial numbers A and B from the internal time of the server 13 and the sequencer 12 (step S14).
The serial numbers A and B are obtained by expressing the internal time in seconds in the following equation (1).
Year (year) x 365 x 24 x 3600 + hour of hour x 3600 + minute of time x 60 + second of time (1)

  If the difference between the serial numbers A and B of the server 13 and the sequencer 12 is equal to or greater than a predetermined number of seconds, such as 10 seconds (step S15: Yes), the sequencer 12 is corrected. Become.

  In the correction process, first, it is determined whether or not the difference between the serial number B of the sequencer 12 and the serial number A of the server 13 is smaller than 0 (A−B <0) (step S16).

  When the difference of the serial number B of the sequencer 12 with respect to the serial number A of the server 13 is smaller than 0 (step S16: Yes), the time of the internal clock of the sequencer 12 is ahead of the time of the internal clock of the server 13. Become. When the difference of the serial number B of the sequencer 12 with respect to the serial number A of the server 13 is greater than 0 (step S16: No), the time of the internal clock of the sequencer 12 is later than the time of the internal clock of the server 13. Become.

  Since the time of the internal clock of the sequencer 12 is ahead of the time of the internal clock of the server 13, when the difference between the serial number B of the sequencer 12 and the serial number A of the server 13 is smaller than 0 (step S16: Yes) When the data transfer timing is 8:30, as shown in FIG. 5A, when the time of the internal clock of the server 13 becomes 8:30, the internal clock of the sequencer 12 is 8: 30 + n seconds. (N ≧ 10). In this case, when the time of the internal clock of the server 13 becomes 8:30, the server 13 corrects the time of the internal clock of the sequencer 12 to 8:30 (step S17). In the sequencer 12, the internal clock becomes 8:30 before the internal clock of the server 13 becomes 8:30, and the data update process is performed after a total time of 12 hours has elapsed since the previous transfer. Therefore, even if the internal clock of the server 13 is 8:30 and the sequencer 12 is corrected to 8:30, the data update process is not performed in the sequencer 12 at this time.

  Thereafter, a data reset signal is transmitted from the server 13 to the sequencer 12, and the data in the sequencer 12 is reset (step S18). As a result, the sequencer 12 sets the internal clock to 8:30, erases the operation data collected until the internal clock is corrected thereafter as invalid, and newly adds the operation data after the reset.

  Since the time of the internal clock of the sequencer 12 is later than the time of the internal clock of the server 13, when the difference of the serial number B of the sequencer 12 with respect to the serial number A of the server 13 is larger than 0 (step S16: No) When the data transfer timing is 8:30, as shown in FIG. 5B, when the time of the internal clock of the server 13 is 8:30, the internal clock of the sequencer 12 is 8: 30- n seconds (n ≧ 10). In this case, when the time of the internal clock of the server 13 becomes 8:30, the server 13 corrects the time of the internal clock of the sequencer 12 to 8:30 (step S19).

  In the sequencer 12, even if the internal clock of the server 13 is 8:30, the internal clock is earlier than 8:30, the total time of 12 hours has not passed since the previous transfer, and the data update process is not performed. Not done. Therefore, when the internal clock of the server 13 is 8:30 and the sequencer 12 is corrected to 8:30, the sequencer 12 performs data update processing assuming that 12 hours have passed since the previous transfer (step S20), and newly Operation data is aggregated.

  In the above-described periodic date and time correction process, the case where the data transfer time is 8:30 has been described. However, the periodic date and time correction process is also performed when the data transfer time is 20:30.

  By performing the periodic date and time correction process as described above, the management system 1 can manage data with high reliability even during a power failure.

1: management system, 11: equipment, 12: sequencer (aggregation means), 13: server (accumulation means)

Claims (2)

Aggregation means for aggregating operation data transmitted from a plurality of facilities for a preset aggregation time and transferring it as aggregate operation data at the data transfer time when the aggregation time has elapsed, and aggregation operation data transferred from the aggregation means And a storage system that stores the date and time information attached thereto,
A date and time comparison process comparing the current date and time immediately after the power failure recovery of the counting means stopped due to a power failure and the date and time immediately before the power failure;
If there is a data transfer time during a power failure, the data transfer process before the power failure that causes the totaling operation data to be aggregated immediately before the power failure to be transmitted from the aggregation means to the storage means,
Aggregated operation data transmitted in the pre-power failure data transfer process, the pre-power failure data accumulation process to accumulate in the storage means as aggregate operation data to be transmitted at the data transfer time if there is no power failure,
At the time of the first data transfer after a power failure recovery, a post-recovery data transfer process that causes the totaling operation data that has been aggregated after the power failure recovery to be transmitted from the aggregation means to the storage means;
The post-recovery storage process for storing the total operation data transmitted in the post-recovery data transfer process in the storage means as the total operation data transmitted at the time of data transfer;
A power failure information storage process is performed in which the date and time information is added to the information indicating that there is no total operation data and stored in the storage unit as information at the total time when the operation data could not be totaled due to a power failure. Management system. The management system according to claim 1,
When the internal clock of the storage means reaches the data transfer time, a periodic date correction process for adjusting the internal clock of the counting means to the internal clock of the storage means is performed.