Aircraft engine tail profile measurement device and method based on machine vision

Abstract

The invention discloses an aircraft engine tail profile measurement device and method based on machine vision. The device comprises a computer, two CCD cameras, two linear array semiconductor lasers and modulators. The output of the computer is connected with a pulse generator, the pulse generator is connected with the CCD cameras and the linear array semiconductor lasers, the linear array semiconductor lasers are connected with laser emission heads through the modulators, and the CCD cameras capture linear array profiles and upload the linear array profiles to the computer through image acquisition cards. The measurement method includes the steps that the CCD cameras capture images respectively, profile diagrams are acquired from strong light in a laser lock-on imaging mode, and after the profiles are corrected, the images acquired by the two CCD cameras are fused. According to the aircraft engine tail profile measurement device and method based on machine vision, the two CCD cameras are used for partially capturing the profile diagrams of the linear arrays of the tail of an engine in the field of view and capture flames on the tail in the field of view, the working conditions of the engine are studied in the aspect of tail flame images and the aspect of tail profile changes, and thus the reliability of detection is improved.

Description

technical field [0001] The invention belongs to the field of aero-engine performance detection, relates to technologies such as image processing, laser and optics, and computer, and proposes a method for measuring the profile of the tail of an aircraft engine and analyzing tail flames, and specifically relates to a device for measuring the profile of the tail of an aircraft engine based on machine vision and methods. Background technique [0002] With the rapid development of the national economy, air transport is becoming more and more important in people's lives. With its fast, comfortable, and relatively safe characteristics, airplanes have gradually become the most important way of travel for people. But in recent years, the accident rate of aircraft has increased greatly, so enhancing the flight safety of aircraft has become a task that cannot be ignored, and the working performance of aircraft engine is an important part of aircraft flight safety, and its state direct...

AI Technical Summary

Problems solved by technology

The basic principle of contact measurement is that the machine takes points one by one, the measuring head is in contact with the measured object, the operation process is cumbersome, and the measurement speed is slow, especially when the measured object is large, it is very time-consuming

Because of the high temperature and large size of the tail of the aircraft engine when it is working, the traditional contact three-dimensional measurement method is no longer applicable

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