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

Claim 0:
1. An ice and dew detection device based on an S-shaped microwave transmission line, comprising a metal housing, wherein the metal housing comprises a sensor chamber communicating with an external environment and a circuit board chamber sealed off from the external environment;
the sensor chamber comprises multiple detection transmission lines therein as an external S-shaped microwave transmission line;
the multiple detection transmission lines are connected in series from end to end to form the external S-shaped microwave transmission line;
the circuit board chamber comprises an internal S-shaped microwave transmission line therein;
a head end of the external S-shaped microwave transmission line and a head end of the internal S-shaped microwave transmission line serve as microwave signal input terminals;
a tail end of the external S-shaped microwave transmission line and a tail end of the internal S-shaped microwave transmission line are configured to output signals to be compared, and by comparing two signals to be compared, a phase difference signal and an amplitude difference signal are acquired; a center of the sensor chamber is provided with a central fixed shaft;
the multiple detection transmission lines are evenly distributed around the central fixed shaft;
the detection transmission lines are spaced apart from the central fixed shaft and the metal housing;
a side wall of the sensor chamber is provided with multiple vents; and
the circuit board chamber is filled with an atmospheric-pressure dry air.