Method and device for rapidly evaluating electrical durability of relay contact based on machine vision

Abstract

The invention relates to a method and a device for rapidly evaluating the electrical durability of a relay contact based on a machine vision. The method comprises the following steps of: respectively obtaining side face image sequences of two contacts of a relay and a surface image of a relay contact; obtaining an effective contact distance sequence of the two contacts of the relay contact, and extracting a texture characteristic parameter of the processed surface image of the relay contact; respectively building a BP (Back Propagation) neural network evaluation model and a time sequence evaluation model aiming at the electrical durability of the contact according to the texture characteristic parameter and the effective contact distance sequence; and combining prediction results of the BP neural network evaluation model and the time sequence evaluation model by using a B-spline associative memory network, so as to establish a multi-parameter model for predicting the electrical durability of the relay contact, and evaluate the electrical durability of the relay contact. The device comprises a processor, a first imaging module and a second image module. The method and the device provided by the invention can accurately predict the electrical durability of the relay contact under the condition of not damaging the relay.

Description

technical field [0001] The invention relates to the field of electrical and detection technologies, in particular to a method and device for rapidly evaluating the electrical life of relay contacts based on machine vision. Background technique [0002] Relay contact life prediction is an important link in relay mechanical fault diagnosis. It determines the current operating state of the relay based on the historical data of the characteristic parameters obtained by continuous monitoring of the relay, predicts its future operating trend, and predicts and determines the residual life of the equipment. , it is of great significance to relay equipment maintenance and replacement decision-making. The current electrical life test method of relays generally adopts the timing censoring test method, that is, according to the standard, a number of samples are randomly selected from the same batch of finished products for testing from the finished product warehouse, and the timing acti...

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Problems solved by technology

Univariate life prediction, its prediction a

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