Electronic Device for Cathodic Protection and Measure of Corrosion in Situ

In this paper research was on the simulation of a prototype for corrosion control by means of cathodic protection with a current impressed system (CPCI) was carried out, whose electric supply is by a solar panel, and programmed in Arduino, for the electronic circuit LM324 operational amplifiers were used to measure the potential and the corrosion rate by the apply of the polarization resistance technique. Before developing the physical circuit, the elements in the Proteus 8 simulator were tested. For electrochemical analysis, seawater was used as electrolyte, Ag/AgCl electrode was used as reference electrode (RE), the working electrode (WE) was a 1018 steel plate, for the measurement of open circuit potential the Arduino Mega 2560 plate was used, using its digital outputs to sense the voltage of the 1018 steel plate and its PWM outputs to program the ramp signal. These values were made based on the ASTM G-59 standard.