Airplane surface bolt tightening detection method

Abstract

The invention discloses an airplane surface bolt tightening detection method, and relates to the field of airplane part installation state detection. In order to improve the detection efficiency and reliability, later inspection and data tracing are facilitated. The method specifically comprises the following steps: establishing a local feature sample by taking a bolt group as a whole through a system, firstly extracting circular contours of bolts in the bolt group, and establishing a feature sample according to a relative position relationship between central points of the circular contours;when the system operates, the system matches the sample characteristics in a shot image range, intercepts a local area of the sample characteristics and stores the local area for bolt tightening statedetection after matching succeeds, and specifically comprises the following steps: initializing the system, which comprises characteristic recognition preprocessing of a sample image; characteristicdetection is adopted, a to-be-detected bolt area is extracted, a to-be-detected sub-bolt local area is extracted by detecting circular characteristic points, and the bolt tightening state is identified by comparing pixel average values in four quadrants, so that the detection burden of workers is greatly reduced, and the detection precision is improved.

Description

technical field [0001] The invention relates to the technical field of detecting the installation state of aircraft components, in particular to a method for detecting the tightening of bolts on the surface of an aircraft. Background technique [0002] The quality control inspection work before the release of the aircraft is the last process for the pilot to confirm the appearance status of the aircraft, the position of the cockpit switch, the amount of refueling, and the pressure indication value of the oxygen system after oxygen supplementation; Particularity, at present, these inspections are still done manually at home and abroad; although there are corresponding sensors and testing equipment for the visual inspection of the appearance, it still needs to be inspected visually or with hand-held related equipment. [0003] Therefore, there are mainly the following deficiencies in the traditional inspection method: [0004] (1) The traditional inspectors use the lifting pl...

AI Technical Summary

Problems solved by technology

[0004] (1) The traditional inspectors use the lifting platform or climb to the top of the aircraft, spending hours to conduct quality inspections, which is inefficient;

[0005] (2) The extraction of inspection means, criteria, inspection records and other elements for aircraft release inspection is incomplete, lack of guidance on the operation information of each key node, and insufficient ability to supplement temporary information, resulting in unskilled or newcomers Operators have high operational risks;

[0006] (3) In the stage of purely manual recording by the operator, the phenomenon of data islands appears, which reduces the ability of data traceability and brings great lag to the later result inspection; increases the operational risk caused by artificial unstable factors;

[0007] (4) The long-term paper recording method has brought great troubles to the later verification, filing and recording work;

[0008] (5) With the development of technology and the improvement of indicators, the difficulty and requirements for the operation of maintenance, inspection and other links have also increased; this is for many enterprises in the field of high precision, high accuracy and high strength. In terms of improving the knowledge popularization rate of personnel and expanding learning accumulation channels, etc., it is necessary to invest a lot of manpower and economic costs to maintain the necessary quality requirements

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