Abstract
The calibration system is commonly used to test the meter accuracy. An intelligent and adaptive calibration software system is proposed as an upper computer application, which gathers, deals, and stores the signal data from the sensors, and analyzes the calibration result. Three main modules, i.e., PLC communication module, calibration module, and report module, are defined. The MEWTOCOL-COM communication proxy of Panasonic PLC is designed by using .NET SerialPort framework, and is used to transmit data between PC and hypogynous machine through serial communication. Based on the data processing, an enhanced static weighing method is used as a calibration algorithm to verify the flowmeter parameters, i.e., error rate, repeatability and so on. And the final report is generated by the adaptive report module. The results of experimental tests and actual running show that the system is highly efficient with low test cost and reliable performance.
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