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Contactless solenoid valve detection system

A detection system and solenoid valve technology, applied in the direction of circuit breaker testing, etc., can solve the problems of measurement circuit interference and inability to measure solenoid valves, etc., and achieve the effect of no insertion loss, light weight, compact and strong structure

Inactive Publication Date: 2017-06-09
CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot accurately measure the current waveform of the solenoid valve due to the interference of the probe to the measurement circuit.

Method used

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  • Contactless solenoid valve detection system

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Embodiment Construction

[0034] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0035] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features that are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0036] Such as figure 1 , the non-contact solenoid valve detection method of the present invention comprises the following steps:

[0037] Step 1: The magnetic field sensor detects the magnetic flux leakage around the solenoid valve, converts the magnetic field change of the magnetic flux leakage magnetic field into a voltage signal, sends it to the A / D acquisition board, and passes through the conditioning amplifier circuit on the way;

[0038] Step 2: In the con...

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Abstract

The invention discloses a non-contact electromagnetic valve detection system and a detection method. The detection system includes a magnetic field sensor, a conditioning amplifier circuit, an A / D acquisition board, a multifunctional measurement and control board, and an industrial computer; The surroundings of the solenoid valve are connected with a conditioning amplifying circuit; the A / D acquisition board is connected with the conditioning amplifying circuit, and simultaneously connected with a multifunctional measurement and control board; the multifunctional measurement and control board is respectively connected with an industrial computer and a power drive circuit board. In the present invention, the inductive magnetic sensitive sensor has no contact sensing, high reliability, and is used to detect current and voltage. It can perform positionless detection without connecting to the main circuit, has no insertion loss, and realizes complete isolation of input and output signals. , no overload damage; and the adaptive filtering algorithm software adopted can extract and suppress the noise part of the composite signal, which can eliminate the interference noise signal, thereby obtaining a complete original signal and improving the test accuracy.

Description

technical field [0001] The invention relates to electromagnetic valve testing equipment, in particular to a non-contact detection system for electromagnetic valves. Background technique [0002] In the fields of automobile, aviation, military industry, electric power and shipbuilding industry, there is an increasing demand for solenoid valves, especially high-pressure and high-performance solenoid valves, and the requirements for various performance indicators in their starting and stopping characteristics are getting higher and higher. Especially in the field of aviation industry, it is of great strategic significance to comprehensively test the performance of high-pressure high-performance solenoid valves. The dynamic response characteristics of high-pressure high-performance solenoid valves will directly affect the control of the engine by the entire aircraft control system. Therefore, it is very necessary to design and develop a fast, accurate and highly intelligent sole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 卢晔
Owner CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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