JPH07152410A - Data recording device - Google Patents

Abstract

PURPOSE:To provide a data recording device which can decrease the data fetching mistakes for the production facilities in an abnormal operation state. CONSTITUTION:A facilities abnormal pattern producing part 11 included in a programmable controller 1 decides the normal operations for the patterns of the same data included in a sampling period decided by a sampling period setting part 9 end sent from the production facilities 31. Meanwhile the abnormal operations are presumed for the patterns of data other then the pattern of the data having normal operations. Furthermore the part 11 produces a ladder program based on the presumed patterns of data having the abnormal operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording device for estimating production equipment which is operating abnormally and recording data of the production equipment which is operating abnormally.

[0002]

2. Description of the Related Art Conventionally, a programmable controller (hereinafter referred to as a PC) which is a control means for controlling production facilities of a factory.
Write. ) Is generally programmed in a ladder program. Since this ladder program has a simple program structure and can be easily changed, there are many advantages such as being able to flexibly deal with changes in production equipment.

For example, in the case of controlling a data recorder, which is a recording means for recording data from a plurality of production facilities or data from a plurality of data collection points of the production facility by a PC and recording the data, the number of production facilities is It was possible to easily deal with changes and changes in the data collection points of production equipment. Further, when recording data at the time of failure of the production equipment, the ladder program of the PC is changed to record the data from the production equipment in failure or the data from the data collection point of the production equipment.

[0004]

However, when data is recorded during an abnormal condition such as a failure of the production facility, the abnormal operation time of the production facility is often limited to a very short period of time. If the ladder program that serves as a trigger to record the data during abnormal operation is changed by limiting the production equipment that operates abnormally, it takes time to operate and the data from the production equipment during abnormal operation or the production equipment In some cases, it was not possible to record data from abnormal points.

Therefore, it is an object of the present invention to provide a data recording device that reduces data omissions in production equipment that operates abnormally.

[0006]

A data recording apparatus of the present invention for achieving the above object comprises a recording means for recording data from a production facility, a data display means for displaying the recorded data, and In a data recording device comprising a control means for controlling the recording means, an input means for reading data from the production facility, a pattern detection means for detecting a pattern of data input to the input means, and the input means Sampling period setting means for setting the sampling period of the input data, pattern storage means for storing the pattern of the data detected by the pattern detection means, pattern of the data stored by the pattern storage means and the sampling period Compare the patterns of data within the sampling period set by the setting means Abnormal pattern data to estimate the time of operation, the facility failure pattern generating means for generating a ladder program for recording data from the production facility according to the pattern of the estimated data and,
It is characterized by having.

[0007]

In the data recording apparatus of the present invention, the data from the production facility is patterned by the pattern detecting means and stored by the pattern recording means. Then, the sampling period setting means samples the data pattern from the production equipment during normal operation for a certain period, and the equipment abnormality pattern creating means estimates the abnormal operation pattern. Further, the equipment abnormality pattern creating means records a data as a trigger for recording the data during the abnormal operation by creating and operating a ladder program according to the estimated data pattern from the production equipment during the abnormal operation. It is recorded by the means and displayed by the data display means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the data recording apparatus of the present invention will be described below with reference to the accompanying drawings.

In the data recording apparatus of the present invention, as shown in FIG. 1, a data recorder 21 which is a recording means for recording data from the production facility 31 or data from the production facility 31, and the data recorder 21 records the data. 2 which is a data display means for displaying the data to be stored
2 and a PC 1 which is a control means for patterning data from the production facility 31 and controlling the data recorder 21. Further, the PC 1 includes an input unit 3 which is an input unit for reading data from the production facility 31, a pattern detection unit 5 which is a pattern detection unit for patterning these data, and data from the pattern detection unit 5. Pattern storage unit 7 that is a pattern storage unit that stores the pattern
And a sampling period setting unit 9 which is a sampling period setting unit that sets a sampling period according to a signal input from the operator 41, and a pattern of data outside the sampling period is estimated to be a pattern of data from the abnormally operating production facility 31. The equipment abnormality pattern creating unit 11 is equipment abnormality pattern creating means for creating a ladder program according to the pattern of this data.

In the data recording apparatus of the present invention configured as described above, four kinds of data of data A, data B, data C, and data D are input from the production equipment 31 to the input section 3,
Further, the pattern detection unit 5 detects the pattern as shown in FIG. The detected patterns of the data A, the data B, the data C, and the data D are sent to the pattern storage unit 7 and the patterns of the respective data are stored.
On the other hand, the sampling period set by the operator 41, which is an input from the outside, is processed by the sampling period setting unit 9 and further transmitted to the pattern storage unit 7, and then the data A, the data B, the data C, and the data D are transmitted. Determine the range of sampling periods. Data A, data B, data C, data D stored within this sampling period
Since the pattern No. is a data pattern when the production facility 31 is operating normally, the other patterns of data A, data B, data C, and data D are data patterns when the production facility 31 is operating abnormally. Presumed. These estimated data patterns are further reprocessed by the equipment abnormality pattern creation unit 11 into "0" and "1" patterns as shown in FIG. Then, at this time, "Yes" is present in the pattern corresponding to the sampling period, that is, the pattern of the data in the normal operation, and "No" in the pattern not corresponding to the sampling period, ie, the pattern estimated to be the data in the abnormal operation. And label each. That is, in FIG. 3, 14 patterns out of 16 patterns of the data A to D appear within the sampling period, and two patterns do not appear. Finally, the equipment abnormality pattern creation unit 11 creates a ladder program as shown in FIG. 4 from the “0” and “1” patterns labeled “absent” in FIG. This created ladder program is operating normally production equipment 31
Since it is something other than the pattern of the data from, if the data for operating this ladder program is input, it is highly possible that the equipment is operating abnormally. Therefore, the data recording apparatus of the present invention can promptly record the data from the production equipment 31 that is abnormally operating with respect to the data recorder 21 or the data from the failure portion of the production equipment 31. The data recorded by the data recorder 21 is displayed on the display 22.

FIG. 5 is a flow chart of the data recording apparatus of the present invention.

The pattern detection unit 5 detects a pattern of data from the production facility 31 (S1). The detected data pattern is sent to the pattern storage unit 7 and the data pattern is stored (S2). On the other hand, operator 4
The data input by 1 is the sampling period setting unit 9
And the sampling period is set (S
3). Then, the equipment abnormality pattern creating unit 11 searches for a data pattern during normal operation, and the equipment abnormality pattern creating unit 11 estimates a data pattern during abnormal operation of the production equipment 31 (S4). Then, from this estimated pattern, when the production equipment is abnormal, the data recorder 2
Ladder program that operates 1 is automatically generated (S
5). If the data from the production equipment 31 is the abnormal operation pattern (S6), the data recorder 21 is controlled according to the ladder program created by the equipment abnormal pattern creation unit 11 to obtain the data of the abnormal operation of the production equipment 31. The data is recorded in the recorder 21 (S7). Finally, the recorded data at the time of abnormal operation of the production facility 31 is displayed on the display, and the process ends (S8).

By operating in this manner, the data recording apparatus of the present invention is configured so that the pattern of a plurality of data from the normally operating production apparatus is limited to the range of the sampling period externally set. Determined as the data pattern during normal operation of. Then, the other data patterns are estimated to be during abnormal operation, and a ladder program is created according to the data pattern estimated to be during abnormal operation and the ladder program is operated during abnormal operation. Loss of failure can be reduced.

In the present embodiment, there are four types of data from the production equipment, but any number of two or more types may be used as long as the data and the pattern obtained from the data can be compared. Further, in this embodiment, the operator inputs the sampling period, but any value may be input if the length of the sampling period is controlled in the programmable controller according to the data length input to the data recording apparatus of the present invention. Still better.

[0015]

As described above, according to the data recording apparatus of the present invention, the data from the normally operating production equipment is sampled for a certain period of time, and it is a pattern of the data during normal operation from the production equipment. By determining the abnormal operation of the production equipment from the data pattern that does not correspond to this, a ladder program is created from the data pattern at the time of this abnormal operation, and the abnormal operation of the production equipment is performed by operating the ladder program. It is possible to reduce the loss of data.

[Brief description of drawings]

FIG. 1 is a drawing for explaining a configuration for carrying out a data recording apparatus that is an embodiment of the present invention.

FIG. 2 is a diagram for explaining a pattern of data processed by the data recording apparatus that is an embodiment of the present invention.

FIG. 3 is a form of data in the process of being processed by the data recording apparatus according to the embodiment of the present invention.

FIG. 4 is a ladder program created by a data recording device that is an embodiment of the present invention.

FIG. 5 is a flowchart for explaining a data recording device that is an embodiment of the present invention.

[Explanation of Codes] 1 ... Programmable controller, 3 ... Input unit, 5 ... Pattern detection unit, 7 ... Pattern storage unit, 9 ... Sampling period setting unit,
11 ... Equipment abnormality pattern creation unit, 21 ... Data recorder, 22 ... Display, 31 ...
Production equipment, 41 ... Operator.

Claims (1)

[Claims] 1. A data recording device comprising recording means for recording data from a production facility, data display means for displaying the recorded data, and control means for controlling the recording means. Input means for reading the data, pattern detecting means for detecting the pattern of the data input to the input means, sampling period setting means for setting the sampling period of the data input to the input means, and the pattern detecting means An abnormal operation by comparing the pattern of the data stored by the pattern storage unit with the pattern of the data detected by the pattern storage unit and the pattern of the data within the sampling period set by the sampling period setting unit. Estimate the pattern of time data and estimate the data Data recording apparatus characterized by having a facility failure pattern generating means for generating a ladder program for recording data from the production facility according to the pattern.