A method for collecting, calculating and analyzing dcs control parameter data
A technology for controlling parameters and data, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of difficult data analysis, messy, and unreachable data collection, etc., and achieve the effect of reducing the time for browsing data
Active Publication Date: 2017-09-05
杭州青云新材料股份有限公司
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Problems solved by technology
[0003] The present invention provides a method for collecting and calculating and analyzing DCS control parameter data, which mainly solves the problem in the prior art that only DCS data is collected, but no certain analysis and calculation method is adopted, so that the collected database is huge, Moreover, it is messy, the data is not easy to analyze, and the purpose of data collection cannot be achieved, etc.
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Embodiment
[0031] Embodiment: This example is a method for collecting and calculating and analyzing DCS control parameter data. Taking the temperature control point TIC109 as an example, the steps are as follows:
[0032] (1) According to the process characteristics, each control parameter is divided into areas, and a table of normal operating conditions is set for each area;
[0033] (2) Define a normal control mode for each control parameter;
[0034] (3) Use the OPC interface to collect the data of the temperature control point TIC109. The collected data includes the set value SV, the measured value PV, the upper limit value SH, the lower limit value SL, the operation output value MV, the control mode MODE, and input to the first factory database OPCDatabase;
[0035] (4) Use the database language SQL to analyze and calculate all the data of the previous day at a fixed time every day, and write the calculation results into the second factory database PMDatabase. The calculation metho...
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The invention relates to a method for collecting and analyzing DCS control parameter data, in particular to a method for collecting and calculating and analyzing DCS control parameter data. It mainly solves the existing technology that only collects DCS data, but does not adopt certain analysis and calculation methods, so that the collected database is huge and cluttered, the data is not easy to analyze, and the purpose of data collection cannot be achieved. question. The invention divides each control parameter into regions, sets a normal operation condition table for each region, defines a normal control mode for each control parameter, uses the OPC interface to collect the data of each control parameter, and uses the database language to analyze all the data Calculate, perform secondary analysis on the average absolute percentage deviation value data, and calculate a cumulative deviation of the average absolute percentage deviation value in a short time. When the cumulative deviation exceeds the upper and lower limits of the alarm, an alarm will occur and the engineer will be notified by email.
Description
technical field [0001] The invention relates to a method for collecting and analyzing DCS control parameter data, in particular to a method for collecting, calculating and analyzing DCS control parameter data. Background technique [0002] At present, the degree of on-site control automation of production enterprises is getting higher and higher, and the degree of dependence on the DCS control system is getting higher and higher. How to monitor the effective and normal operation of DCS control parameters, monitor the control fluctuations of control parameters over a long period of time, can timely and accurately understand the fluctuations in the process and equipment use, and help discover and solve problems. A Chinese patent discloses a method for real-time collection of DCS data into a computer network (public number: CN1426001), which includes a DCS and a server equipped with a real-time database. The network realizes the communication and access of data, and the specif...
Claims
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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 高康
Owner 杭州青云新材料股份有限公司