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

A Composite Environmental Interference Magnetic Field Shielding System

A technology of environmental interference and shielding system, applied in the direction of magnetic field/electric field shielding, size/direction of magnetic field, electromagnet, etc., can solve the problems of large magnetic field noise, low shielding coefficient, high construction cost, etc., and achieve good shielding coefficient and residual magnetism , Improve the shielding effectiveness, easy to use

Active Publication Date: 2021-09-24
中国船舶重工集团有限公司第七一0研究所
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the internal remanence of traditional magnetic shielding chambers based on multilayer silicon steel sheets and permalloys and other magnetic materials is generally tens of nants, and the shielding coefficient is low in low frequency bands, the magnetic field noise is large, and the overall construction cost is very high. The overall indicators are difficult to meet the above requirements
Although the cost of the active magnetic shielding system is low, it has a very good shielding factor in the low frequency band and is complementary to the shielding room, but it can only shield the uniform interference magnetic field in the space domain, and cannot solve the non-uniform stray interference magnetic field

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
  • A Composite Environmental Interference Magnetic Field Shielding System
  • A Composite Environmental Interference Magnetic Field Shielding System
  • A Composite Environmental Interference Magnetic Field Shielding System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] This embodiment provides a composite environmental disturbance magnetic field shielding system, including a magnetic shielding room 1 based on multilayer magnetically permeable materials, an active compensating device for fluctuating magnetic fields, and an active compensating device for geomagnetism.

[0033] Such as figure 1 As shown, the magnetically shielded room 1 based on multilayer magnetically permeable materials includes a main frame, a magnetically shielded plate, a degaussing cable, and a degaussing power supply. The magnetic shielding room 1 is provided with a magnetic shielding door 2 for operators to enter and exit. The direction of opening the door is the X direction, that is, the X direction is perpendicular to the wall where the door is located.

[0034] The main frame is a multi-layer structure, using three-layer aluminum alloy sk...

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 discloses a composite environmental interference magnetic field shielding system, which comprises a magnetic shielding room based on a multilayer magnetically permeable material, a fluctuating magnetic field active compensation device, and a geomagnetic active compensation device; the fluctuating magnetic field active compensation device is installed on a multilayer magnetically permeable material based The magnetic shielding room outside, the geomagnetic active compensation device is installed on the outside of the magnetic shielding room based on multi-layer magnetically permeable materials, and shares the coil bobbin with the fluctuating magnetic field active compensating device; the fluctuating magnetic field active compensating device output and the fluctuation in the environmental interference magnetic field Compensating magnetic fields with equal magnetic fields and opposite directions, the geomagnetic active compensation device is used for compensating the geomagnetic field. The invention can solve the non-uniform stray interference magnetic field and improve the shielding efficiency.

Description

technical field [0001] The invention belongs to the field of electromagnetic fields, and in particular relates to a composite environment interference magnetic field shielding system. Background technique [0002] Environmental interference magnetic field mainly refers to the interference magnetic field generated by magnetic objects such as geomagnetism, automobiles, subways, trains, elevators, motors, transformers, etc., as well as the 50Hz / 60Hz power frequency magnetic field and power frequency harmonic interference magnetic field generated by power cables. [0003] For the development and testing of superconducting quantum magnetometers (SQUID), induction magnetometers, alkali metal atom SERF magnetometers and other magnetometers with ultra-high sensitivity, a magnetic shield device with a very high magnetic shielding coefficient is required to generate an extremely weak magnetic field environment , but subject to the current level of magnetic shielding room, the current ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00H01F7/18G01R33/02
CPCG01R33/0206H01F7/18H05K9/0001
Inventor 张海波周昌剑赵文纯窦珂
Owner 中国船舶重工集团有限公司第七一0研究所
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