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A Method of Improving the Accuracy of Process Data Analysis of Feeding Machine

A process data and analysis accuracy technology, applied in program control, electrical program control, program control in sequence/logic controllers, etc., can solve the problems of data loss, inability to accurately analyze feeding process data, etc. Optimize the feeding process and the effect of high-precision acquisition

Active Publication Date: 2017-07-18
CHINA TOBACCO SHANDONG IND
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Production monitoring and data acquisition generally use industrial computer, which is connected to PLC through industrial control network. Since the data update cycle of industrial computer is generally about 1000ms, the data collected by industrial computer is only one-fiftieth of the process data, a large amount of data Loss, resulting in inaccurate analysis of feeding process data

Method used

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  • A Method of Improving the Accuracy of Process Data Analysis of Feeding Machine

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, a method for improving the accuracy of feeder process data analysis includes the following steps:

[0025] Step 1 calculates the stack address pointer.

[0026] P=I*32+P#

[0027] P: address pointer;

[0028] I: address serial number;

[0029] P#: Pointer offset.

[0030] Step 2 Query the current time of the PLC in real time, obtain the 5 bytes of hour, minute, second, 10 milliseconds, and 0.1 milliseconds of the current time, convert the BCD code in the byte into an integer, and calculate a time value in units of 0.1 milliseconds , as the data collection time, and saved together with the monitoring data for later analysis.

[0031] t=(((h*60+m)*60+s)*100+ms 1 )*100+ms 2

[0032] t: data collection time;

[0033] h: the hour in the current time of the PLC;

[0034] m: minute in PLC current time;

[0035] s: ...

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Abstract

The invention discloses a method for improving the analysis accuracy of process data of a feeding machine. The method includes the following steps: a stack address pointer is calculated; PLC current time is inquired in real time, and data collecting time is obtained; data circulation in a data collecting mapping area is stored into a data collecting area in a data block in a stack mode; after the primary data collecting process is completed, the data in the data collecting area are transmitted into a data cache area at a time; the data in the data cache area are transmitted into a data output area, and an industrial personal computer is notified to receive the data; the industrial personal computer collects the data in the data output area in the PLC data block into data collecting variables; compiled data in a database temporarily-stored table are recovered to be in an original structural mode and written into the database storage table. By means of the method, changes in the feeding process are accurately monitored, analysis of the feeding process is more meticulous and more accurate, and data supports are provided for research on optimizing the feeding process and improving the feeding accuracy.

Description

technical field [0001] The invention relates to a method for improving the analysis accuracy of process data of a feeder. Background technique [0002] As the key equipment for cigarette production, the leaf feeder is responsible for uniformly applying the feed liquid to the tobacco leaves according to the formula requirements. In order to ensure the feeding accuracy, a large PLC is generally used as the main control unit, and the scanning period is about 20ms, that is, every 20ms Adjust the control parameters once according to the control results. Production monitoring and data acquisition generally use industrial computer, which is connected to PLC through industrial control network. Since the data update cycle of industrial computer is generally about 1000ms, the data collected by industrial computer is only one-fiftieth of the process data, a large amount of data Loss, resulting in the inaccurate analysis of the feeding process data. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/05G05B2219/10
Inventor 段三青程林峰韩勇孙钦兰尹旭梅孙延钊杨鲁滨阎为民
Owner CHINA TOBACCO SHANDONG IND
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