Electromagnetic fault diagnosis device based on three-way magnetic sensor and system and method thereof

Abstract

The invention provides an electromagnetic fault diagnosis device based on three-way magnetic sensors and a system and method thereof, and the device comprises an electromagnetic measurement array composed of a plurality of three-way magnetic sensors, a connection cable, a data collection transmitter, a data receiving comparator and a historical electromagnetic information library. The method comprises the following steps: recording values in X, Y and Z directions corresponding to an electromagnetic field vector signal generated when a product works under a correct working condition, generating a whole-course curve, taking the whole-course curve as a judgment basis, measuring the vector signal of a plurality of batches of same products in the same state at the same position at the same angle, analyzing the curve difference of the same type of products in different time domains, and judging whether the product works or not. And electromagnetic fault diagnosis is realized. The fault diagnosis method used in the invention is a non-contact fault diagnosis method, is low in cost and simple to realize, can realize real-time electromagnetic health monitoring and fault diagnosis on a plurality of components in a product by using fewer electromagnetic sensors, and is especially suitable for a large batch of similar products.

Description

technical field [0001] The present invention relates to the technical field of aerospace products, in particular to an electromagnetic fault diagnosis device based on a three-way magnetic sensor and its system and method, especially to an electromagnetic fault diagnosis method based on a three-way magnetic sensor. Background technique [0002] Batch products in various sub-fields such as aerospace vehicles, weapons, satellites, etc., partly use fixed programs controlled by single-chip microcomputers to operate during flight. It burns the predetermined program into the single-chip mechanism, and within the specified running time, successively sends instructions to the actuator to realize various functions, such as turning on the servo mechanism and opening the self-locking valve in sequence according to the set sequence , Open solenoid valve 1, open solenoid valve 2, close solenoid valve 1, close solenoid valve 2, etc. [0003] A patent document with publication number CN102...

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Problems solved by technology

[0004] At present, most of the test methods for this type of fixed program process are collected by the input of the control terminal and the current and voltage signals of the output terminal. This type of test method has the possibility of misjudgment, such as the input signal of the control terminal but the output terminal fails or the output terminal fails. The polarity is wrong, and the actual function of the product cannot be judged by using the current and voltage signals

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