Corrosion rate measurement sensors, devices, and, corrosion rate measurement method

摘要

PROBLEM TO BE SOLVED: To provide a corrosion speed measuring sensor for noncontactly and precisely measuring a corrosion speed in a structure.;SOLUTION: The corrosion speed measuring sensor includes a corrosion speed measuring circuit comprising a pair of to-be-measured electrodes, an electrochemical resistance measuring circuit, a communication circuit, and a transmitting/receiving antenna. The measuring circuit includes: an impedance measuring circuit for applying a voltage between the electrodes, measuring an electrical resistance, calculating a polarization resistance, and obtaining the corrosion speed; and a dual frequency applying circuit for applying two types of frequencies to the measuring circuit. The antenna includes an induction coil for converting electromagnetic waves transmitted from an external activator into an induction current, and converting corrosion speed calculation data transmitted from the communication circuit into the electromagnetic waves. The communication circuit transmits the induction current converted by the antenna to the measuring circuit, receives the corrosion speed calculation data from the measuring circuit, and transmits it to the antenna.;COPYRIGHT: (C)2009,JPO&INPIT