A Virtual Smart Tongue for Multifrequency Large Amplitude Pulse Voltammetry

The design and application of a virtual smart tongue suitable for multifrequency large amplitude pulse voltammetry (MLAPV) was presented. The instrument consisted of a particular electrochemical sensor array; a self-assembled signal conditioning unit; a data acquisition card (DAQ card), and a personal compute (PC) with LabVIEW programming. A graphical user interface was developed to control, convert the sensor current to a digital value and send it to PC. Then the principal component analysis unit was used for processing data. Seven different Masterkong tea beverages were analyzed to evaluate the performance of system. The result shows that the proposed equipment has good discrimination ability for tea beverages. It also proves that the design of smart tongue based on virtual instrument technology is feasible.