A Novel Soft Sensor for Chinese Tea Characterization

摘要

In cases of measurement, like the beverage discrimination or waste water monitoring, since sensors with direct measuring for specific variables cannot be practically applied, the interest in soft sensor technology, which is based on the acquisition and analysis for a lot of information variables, has rapidly increased. This article presents a novel soft sensor which activates a voltage signal between two specially-designed electrodes, inside the Chinese tea solution, and measures the produced current. The proposed sensor discriminated four different kinds of tea, and the dissolution processes of two of them are described as curves on a bidimensional plane. The results indicate that the proposed approach can also be adapted in characterization or discrimination for other solutions.