Method and device for detecting ice thickness

A technology of peak amplitude and attenuation speed, which is applied in the field of detection of ice thickness, can solve the problems of heavy programming workload of signal detection and analysis software, complex signal electronic circuit, self-excited oscillation method is difficult to prolong working life, etc., and achieves flexible application and convenience, fast solution speed, and easy icing detection

Inactive Publication Date: 2019-07-16
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0009] Aiming at the defects of the prior art, the purpose of the present invention is to solve many deficiencies in the existing flat-film icing sensor patent technology: the self-excited oscillation me...

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  • Method and device for detecting ice thickness
  • Method and device for detecting ice thickness
  • Method and device for detecting ice thickness

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0042] The innovative content of the present invention is: aiming at the above-mentioned problems existing in the resonant working mode and the frequency scanning working mode of the existing piezoelectric film icing sensor, a new method for detecting and analyzing the sensor impulse response signal is proposed to obtain icing information, that is, first The sensor is equivalent to an underdampe...

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Abstract

The invention discloses a method and device for detecting ice thickness. The method comprises the following steps that a sensor is equivalent to an underdamped second-order system; only when it is required to detect the state information of the ice thickness, a pulse excitation signal is input to the sensor to detect and analyze an output response signal of the sensor system to the pulse input excitation signal; since the ice thickness of the surface of the sensor will change the basic parameters of the second-order system to varying degrees, a plurality of characteristics of the output response signal of the sensor system will change accordingly, and the information of the ice thickness can be obtained by detecting and analyzing the changes of these characteristics; and by applying the input pulse excitation signal to the sensor system, several different modes of operation can be selected. The method and device for detecting ice thickness can greatly prolong the working life of the sensor, realize accurate and reliable detection of the icing thickness by detecting various characteristics of the output response signal of the sensor, and have a plurality of different modes of operation available for selection such that the application of the sensor is more flexible and convenient.

Description

technical field [0001] The invention relates to the technical field of sensor and signal detection and analysis, and more specifically, to a method and device for detecting the thickness of ice formation. Background technique [0002] Icing is a widespread phenomenon, and some icing phenomena are harmful to human production and life. For example, icing on various roads, especially thin ice below several millimeters, is called "black ice" in the transportation industry. "Ice", it is difficult for drivers and passengers to detect with the naked eye. When a vehicle enters an icy road at high speed, it will cause the vehicle to skid and run away, causing a vicious traffic accident. Such traffic safety accidents not only occur in the cold regions of northern my country, but also in the vast areas of the middle and lower reaches of the Yangtze River in my country. If all kinds of aircraft encounter icy cloud and fog environment conditions during flight, icing will occur on the wi...

Claims

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Application Information

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IPC IPC(8): G01B17/02
CPCG01B17/02
Inventor 叶林葛俊锋
Owner HUAZHONG UNIV OF SCI & TECH
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