In order to make up for the deficiency of grounding grid corrosion detection device in current market

a corrosion state detecting device is designed.The device is based on STC8A8K MCU and Android host computer.It integrates functions of signal acquisition

signal processing

A/D

D/A conversion

etc.It can accurately and efficiently collect data and calculate corrosion rate and corrosion depth to provide accurate Corrosion conditions. Secondly

the system has an internal and external dual power supply system

which overcomes the limitation that the transmission line cannot be measured because it cannot be connected to the power supply.Through multiple on-site measurements

the obtained data is compared with the existi

ng potentiostats on the market.The maximum error of the device is 4.49×10

-3

and the minimum value is 7.7×10

-4

;The maximum error of the potentiostat measurement result is 2.221×10

-2

and the minimum value is 1.97×10

-3

.The error of the device is smaller.