Patent ID: 11874235
Assignee: MIN MENG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 5:
6. A detection method of the ice and dew detection device based on the S-shaped microwave transmission line according to claim 1, comprising the following steps:
forming an environment in the sensor chamber with same temperature and humidity as in the external environment; sealing the circuit board chamber off from the external environment; and filling the circuit board chamber with an atmospheric-pressure dry air;
inputting two microwave signals with same amplitude and phase to the head end of the external S-shaped microwave transmission line and the head end of the internal S-shaped microwave transmission line, respectively;
respectively obtaining, by the tail end of the external S-shaped microwave transmission line and the tail end of the internal S-shaped microwave transmission line, two signals to be compared;
comparing the two signals to be compared, to acquire a phase difference signal and an amplitude difference signal; and
determining, based on the phase difference signal and the amplitude difference signal, a state on the external S-shaped microwave transmission line, namely, ice and dew-free, iced, or dewed.