Rotating body non-contact detection signal processing method

A technology for detecting signals and processing methods, which is applied to the analysis and processing of the contour signal of the rotating body by a computer, and the measurement of the geometric parameters of the rotating body contour, which can solve the problems of large error, slow measurement speed, and expensive measuring instruments.

Active Publication Date: 2014-03-26
天津航旭科技发展有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The manual caliper measurement method can only measure a certain point on a contour line, and it is easy to be inaccurate for places that are not easy to clamp; the contour meter can perform continuous measurement on a contour line, but it has slow measurement speed, Disadvantages such as expensive ...

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  • Rotating body non-contact detection signal processing method
  • Rotating body non-contact detection signal processing method
  • Rotating body non-contact detection signal processing method

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Embodiment Construction

[0020] The present invention will be described in further detail below.

[0021] The invention provides a processing method for a non-contact detection signal aiming at the outline size of a rotating body. The overall input of this method is the matrix signal collected by the optical sensor, and the overall output is various geometric parameters of the profile of the measured object.

[0022] The signal processing process is divided into seven steps, which are described in detail below

[0023] In the first step S1, the original signal is obtained from the optical sensor. The type of the original signal is a numeric matrix, and each element in the matrix is ​​a non-negative integer representing the signal strength at that location. Typically, the target object location has a strong signal and the background has a weak signal.

[0024] In the second step S2, each element value in the original signal matrix is ​​mapped according to certain rules. The mapping rules described ...

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Abstract

The invention provides a signal processing method which is used for the online non-contact detection of a rotating body. According to the method, matrix signals of the surface outline of the rotating body, which are acquired by an optical sensor, undergo a series of processing steps and are converted into the geometric parameters of the surface outline of the rotating body. The steps of signal processing mainly comprise value mapping, target positioning, noise reduction, edge tracking, binaryzation, shape recognition, coordinate calibration and parameter fitting, and the geometric parameters to be detected are acquired. The converted geometric parameters comprise arc radius, a center coordinate, a straight line angle and a straight line angle vertex coordinate. The geometric parameters and standard data are compared, and whether a detected object is qualified is determined.

Description

technical field [0001] The invention belongs to the field of computer signal processing, and in particular relates to computer analysis and processing of the contour signal of a rotating body, so as to achieve the purpose of measuring the geometric parameters of the contour of the rotating body. Background technique [0002] Rotating parts are widely used in wheels, shafts, shells and other components in construction machinery, automobiles, ships, aerospace, weapons and other industries. Its main feature is that a basic contour rotates around a fixed axis. In many applications, there are relatively strict requirements on the external dimensions of rotating bodies. At present, the measurement of rotating bodies in industry is mainly through manual caliper measurement and profiler measurement. The manual caliper measurement method can only measure a certain point on a contour line, and it is easy to be inaccurate for places that are not easy to clamp; the contour meter can per...

Claims

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Application Information

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IPC IPC(8): G01B11/24
Inventor 陈路佳
Owner 天津航旭科技发展有限公司
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