The invention belongs to the technical field of
airplane icing detection, and specifically relates to a piezoelectric vibration cylinder
icing sensor and a method for measuring
icing condition thereof. Problems that most of the conventional icing sensors only provide icing threshold signals, the thickness of an ice layer cannot be effectively monitored in real time, the sensitivity is low, the size and the
mass are large, and the requirements of
miniaturization and intelligence of the sensors are hard to be met are solved. The piezoelectric vibration cylinder icing sensor comprises a vibration cylinder, the vibration cylinder is regarded as a
resonance sensitive element, an inner wall of the vibration cylinder is pasted with two piezoelectric ceramics respectively serving as a piezoelectric actuating element and a piezoelectric
pickup element, an insulation
thermal conduction film is grown on an inner wall of the vibration cylinder, an electrothermal film is grown on the insulation
thermal conduction film, and two ends of the electrothermal film are equipped with silver electrodes. The equivalent
mass of the vibration cylinder is changed by icing so that the
natural frequency is changed; and the measurement of the thickness of the ice layer is realized via the detection of the
natural frequency of the vibration cylinder. According to the sensor and the method thereof, the precision is high, the reliability is good, the size is small, the
power consumption is low, the structure is simple, the production is easy, and the measurement is free of the influence of the external
magnetic field.