Airplane ground icing detection method, device and system and computer equipment

A ground detection and ice accumulation technology, applied in the field of aircraft ground ice detection, can solve the problems of low sensor accuracy, non-standard detection process, poor robustness, etc., and achieve simple and easy operation of image processing and establishment process , the effect of reducing the measurement error

Inactive Publication Date: 2022-06-07
CIVIL AVIATION UNIV OF CHINA
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The size and range of ice accumulation detection sensors are limited, and they can only be installed in key parts that are prone to ice accumulation. They cannot be fully detected in other areas with a small probability of ice accumulation, and the accuracy of the sensor is affected by environmental factors. Low, installed on the surface of the aircraft will affect the aerodynamic characteristics of the aircraft, the sensor is damaged, the cost of repair and replacement is high, and it is difficult to be widely used
[0007] (2) The image feature extraction method has high requirements on image quality, and the accuracy is limited by hardware constraints. The effect of various feature extraction algorithms is not good, and the robustness is low.
[0008] (3) There is no standardized and integrated icing detection process and convenient and fast icing detection equipment
[0009] (4) The existing technology of aircraft icing detection has slow response, low accuracy, and poor robustness; aircraft icing detection equipment is easily affected by the environment, the detection results are slow and the effect is poor, and the detection cost of the existing technology is high
[0013] The invention solves the problems that the existing aircraft ground ice detection method is greatly affected by the environment, the detection process is not standardized, resulting in low precision, and the detection cost is too high due to the lack of integrated equipment; a visual sensor-based aircraft ground ice detection method is proposed Standardized processes and equipment

Method used

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  • Airplane ground icing detection method, device and system and computer equipment
  • Airplane ground icing detection method, device and system and computer equipment
  • Airplane ground icing detection method, device and system and computer equipment

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Embodiment 1

[0127] like figure 1 As shown, the method for detecting icing on the ground of an aircraft provided by the embodiment of the present invention includes the following steps:

[0128] S101 , using a binocular vision sensor to collect image information of the icing on the ground of the aircraft, preprocessing the image and marking the icing characteristics.

[0129] S102, quantify the ice thickness image information into numerical values ​​through the scaling principle, randomly classify the ice accretion images processed by the icing images to form a data set, and build an ice accretion type recognition model based on the YOLOv5 algorithm, so as to realize the difference between the ice thickness and the thickness of the aircraft ground. Normalization process for type detection.

[0130] S103, finally design an aircraft ground icing detection device based on visual sensors to realize the integrated detection of aircraft ground icing conditions.

[0131] In an embodiment of the...

Embodiment 2

[0133] According to the method for detecting icing on the ground of an aircraft provided in Embodiment 1, such as figure 2 As shown, the method for detecting icing on the ground of an aircraft provided by this embodiment of the present invention is further described in detail in Embodiment 1, and the specific steps include:

[0134] (1) Use binocular vision sensor to collect image information of aircraft ground icing;

[0135] (2) Perform grayscale, denoising, morphological processing, affine transformation and other preprocessing on the collected ice accretion images;

[0136] (3) Quantify the image information of ice accretion thickness into numerical values ​​through the scaling principle;

[0137] (4) Mark the icing area and type of the collected icing images, divide the image data set into training set, validation set, and test set, and train the ice accretion type recognition model based on the YOLOv5 algorithm;

[0138] (5) Input the test set into the trained model, ...

Embodiment 3

[0141] On the basis of Embodiment 2, as a preferred embodiment, as image 3 The principle of 3D reconstruction of the icing area is shown. In step (1), the 3D reconstruction of the icing area is performed by using binocular stereo vision (the relative position of the binocular vision sensor is calibrated to restore the 3D information of the icing area):

[0142] The relative position of the binocular vision sensor is calibrated to restore the three-dimensional information of the icing area:

[0143] Rotation matrix for relative position relationship and translation vector to indicate that the binocular stereo calibration is the solution and process; the known left and right external parameters are , any point in the checkerboard space , its coordinate value in the world coordinate system is , the coordinates of the point projected by the binocular vision sensor in the coordinate system of the left and right vision sensors are and , from the transformation rel...

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PUM

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Abstract

The invention belongs to an airplane ground ice accumulation detection technology, and discloses an airplane ground ice accumulation detection method, device and system and computer equipment. The method comprises the following steps: acquiring an image of an aircraft ground area icing area by using a visual sensor, identifying and classifying the aircraft ground area icing image, quantifying ice thickness image information into a numerical value, combining ice thickness calculation and an ice type identification result, constructing a detection system for the aircraft ground area icing image, and constructing a standardized process for aircraft ground area icing integrated detection; based on a standardized detection process and a safety standard, aircraft ground surface ice detection equipment based on a visual sensor is designed, and the type and thickness of aircraft ground surface ice are identified. The airplane icing detection process designed by the invention has the characteristics of fast response, high accuracy and good robustness, and the designed airplane icing detection equipment is less affected by the environment, timely in detection result and good in effect, and has a relatively good application prospect.

Description

technical field [0001] The invention belongs to the technical field of aircraft ground icing detection, and in particular relates to a method, device, system and computer equipment for aircraft ground icing detection. Background technique [0002] Aircraft play an important role in long-distance transportation. Whether it is passenger travel or material transportation, it can achieve high-speed and high-efficiency. While airplanes bring great convenience to people, flight safety is also highly valued by airlines and consumers. Aircraft icing will seriously affect the performance of the aircraft. The surface of the aircraft facing the airspeed direction is very easy to accumulate ice, such as the nose, pitot tube, windshield, engine intake, fairing leading edge, wing leading edge , the leading edge of the vertical tail, etc. Ice accumulation on the pitot tube and antenna will directly destroy its normal function, causing serious problems such as instrument failure and commu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00G06T5/30G06T3/00G06N3/04G06N3/08
CPCG06T7/0002G06T5/002G06T5/007G06T5/30G06T3/0006G06N3/04G06N3/08G06T2207/10061G06T2207/20028G06T2207/20036G06T2207/20081G06T2207/20084Y02A90/10
Inventor 李彪邢志伟阚犇朱书杰王立文陈飞
Owner CIVIL AVIATION UNIV OF CHINA
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