Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electromagnetic valve on-off state judgment method and device

A switching state and judging method technology, applied in the field of solenoid valve switching state judging methods and devices, can solve problems such as easy misjudgment and difficulty in vibration signal detection.

Inactive Publication Date: 2020-03-27
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a method and device for judging the switching state of a solenoid valve, which not only overcomes the difficulty in detecting vibration signals in a strong noise environment, but also solves the problem that existing detection methods are prone to misjudgment, and is conducive to improving the performance of spacecraft. and reliability of solenoid valve control in industrial equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electromagnetic valve on-off state judgment method and device
  • Electromagnetic valve on-off state judgment method and device
  • Electromagnetic valve on-off state judgment method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] see figure 1 , which is a functional block diagram of a device for judging the switching state of a solenoid valve provided in this embodiment. A solenoid valve switch state judging device, characterized in that it includes a magnetic circuit sensor, a vibration sensor, a magnetic circuit sensor conditioning module, a vibration sensor conditioning module, an A / D conversion module, and a processing module;

[0066] The magnetic circuit sensor is used to collect the magnetic flux leakage analog signal of the solenoid valve; the vibration sensor is used to collect the vibration analog signal of the solenoid valve; the magnetic circuit sensor conditioning module is used to adjust the voltage of the magnetic flux leakage analog signal to A / Within the sampling voltage range of the D conversion module; the vibration sensor conditioning module is used to adjust the voltage of the vibration analog signal to the sampling voltage range of the A / D conversion module; the A / D conver...

Embodiment 2

[0114] Based on the above embodiments, this embodiment provides a method for judging the switch state of the solenoid valve. see image 3 , which is a functional block diagram of a method for judging the switching state of a solenoid valve provided in this embodiment. A method for judging the switch state of an electromagnetic valve, comprising the following steps:

[0115] S1: Collect the magnetic flux leakage analog signal and vibration analog signal of the solenoid valve.

[0116] S2: converting the magnetic flux leakage analog signal and the vibration analog signal into a magnetic flux leakage digital signal and a vibration digital signal respectively.

[0117] S3: Extracting an impact signal from the vibration digital signal based on a wavelet transform method.

[0118] It should be noted that the extraction method of the impact signal is the same as the extraction method of the processing module in a device for determining the switch state of a solenoid valve, so this...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an electromagnetic valve on-off state judgment method and device, and the method comprises the steps: judging the on-off state of an electromagnetic valve through detecting a weak impact signal generated when the electromagnetic valve is closed and combining with non-contact magnetic flux leakage measurement; and when the impact signal is detected and extracted and the magnetic flux leakage digital signal is higher than a threshold value, judging the electromagnetic valve switch to be in a closed state, and when the magnetic flux leakage digital signal is lower than thethreshold value, judging the electromagnetic valve switch to be in an open state. Therefore, the invention provides a method for combining impact signal extraction and magnetic flux leakage measurement based on wavelet transform, which not only overcomes the difficulty in vibration signal detection in a strong noise environment, but also solves the problem that the existing detection method is easy to misjudge, and is beneficial to improving the reliability of electromagnetic valve control in spacecrafts and industrial equipment.

Description

technical field [0001] The invention belongs to the technical field of signal detection, and in particular relates to a method and a device for judging the switching state of an electromagnetic valve. Background technique [0002] Solenoid valve is an important control component. It is used in various aerospace vehicles and various industrial equipment. The reliability and performance of solenoid valve determine the success or failure and performance level of the engine. It is very important in the engine that has been started many times, especially In the attitude control engine, it is precisely because of the use of the solenoid valve that the repeated start and pulse work of the engine are realized. Therefore, the detection of the working state of the solenoid valve is very important. At this stage, the method of detecting the working state of the solenoid valve has vibration detection. , Current detection and magnetic flux leakage detection. Although these methods have ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01M13/003
CPCG01M13/003
Inventor 姜寅啸唐学术
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com