High precision saltwater ice thickness detection method with different salinity under saltwater cover on a horizontal cold plate

The ice of the splashing sea water on the surface of the ship often causes the stability of the ship to decrease, endangering the crew and navigation safety. A capacitance-coupled split-ring microwave resonance detection technique is utilized to ascertain the height of ice-water interface, thereby addressing the challenge of detecting ice on the surface of a ship. To detect the height of ice-saltwater interface with different salinity on a −20 °C horizontal cold plate, a saltwater-ice mixture static interface position detection experiment system based on a coupled split-ring resonator is developed. Results show that, the average thickness of ice covering a layer of deionized water could be determined in the range of 0–10 mm with an accuracy of 90.63 %. The saltwater ice covered by saltwater could also be detected, and ice-water interface position height detection map was summarized. The average height of ice- saltwater interface was measurement based on the map with an accuracy of 91.53 % in the height range of 2.5–20 mm and a salinity range of 3.5–15 %. This work provides a reference to development of anti- and de-icing technology and the ice detection technology, improves the safety and efficiency of ships and offshore structures.