Measuring instrument online soft calibration method and device achieving same

Abstract

The invention relates to a sensing measuring instrument online soft calibration method and a device achieving the same. The method comprises the steps of collecting original data, obtaining an original sample total average value and an original sample standard deviation average value, obtaining an average value control graph and a standard deviation control graph, collecting detection data, obtaining a detection sample average value and a detection sample standard deviation, performing detection data dot drawing, performing result determination and outputting. According to the method, a measuring instrument is monitored by means of the control graphs, a control graph generation stage and a control graph detection stage are included, the method can precisely detect the accuracy of the measuring instrument during working, and therefore continuous and stable operation of a production line is ensured. The device is simple in structure, convenient to realize and easy to operate.

Description

technical field [0001] The invention relates to the field of accuracy detection of measuring instruments, in particular to an online soft calibration method for sensing measuring instruments and a device for realizing the method. Background technique [0002] The accuracy of measuring instruments is directly related to the product quality and production safety of the enterprise. Quality and safety accidents caused by inaccurate measuring instruments are not uncommon. Therefore, every enterprise attaches great importance to the measuring instruments used for production process control, and will schedule these Measuring instruments are sent to the relevant institutions for traceability to ensure their accuracy and reliability. [0003] The traceability of measuring instruments is generally realized through the verification or calibration of measuring instruments by professional metrological verification institutions. According to the requirements of technical regulations, the ...

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Problems solved by technology

However, the actual situation is difficult to ensure that measuring instruments can be traced once a year on schedule, especially in some process production enterprises such as the chemical industry, because in process production enterprises, the equipment on the production line generally needs to go through For 3 to 5 years or even longer, during the operation of the equipment, the measuring instruments installed on these equipment cannot be removed, and the traceability of the value cannot be carried out on schedule. During the continuous production period of the enterprise, how to judge whether the measuring instruments at work are Accurate and reliable, becoming a technical problem that plagues enterprises

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