Smart sensor for chemical compounds concentration

摘要

A Smart Sensor used for measuring the concentration of chemical compounds in fluids/solutions is designed, implemented and tested. The sensor comprises a potentiostat employed for three-electrode electrochemical cell (biosensor) biasing, a transimpedance amplifier and a digital interfacing system. The stability of the potentiostat and the linearity of the transimpedance amplifier are theoretically and experimentally investigated. Finally, the high performances of the smart sensor are demonstrated by simulations and measurements.