Magnetically Shielded Room Pedestal Rigidity Vibration Control
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Solution Overview
Problem
Portable and small magnetically shielded rooms experience positional deviations due to vibrations, causing measuring tools to shift within the internal space.
Innovation Solution
A magnetically shielded room design featuring a pedestal with higher rigidity than the lower shielding body, supporting members that extend into the internal space, and a laminated panel structure for improved magnetic field and electromagnetic wave shielding, with through holes for wiring and casters for mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the magnetically shielded room is made portable and small in size, then mobility and space efficiency are improved, but the room becomes susceptible to vibration-induced positional deviations
Solution Approach 1:
The supporting member is divided into multiple sections: a first supporting portion attached to the shielding body, a second supporting portion extending into the internal space, and a connection portion linking them. This segmentation allows each part to independently handle different mechanical stresses, improving overall stability while maintaining the compact portable design.
Solution Approach 2:
The connection portion is designed with flexible properties (different from the rigid first and second supporting portions), introducing controlled compliance to the structure. This parameter change allows the connection portion to absorb vibration and mechanical stress, preventing positional deviations while maintaining mobility.
2Stability of the object's composition
If a rigid supporting structure is added to prevent positional deviation, then measurement stability is improved, but the structural complexity increases
Solution Approach 1:
The supporting member serves multiple functions: it provides mechanical support for the measuring tool, acts as a grounding path for the magnetically shielded room, and the hollow interior can accommodate wiring. This multi-functionality reduces the need for separate components, maintaining simplicity while achieving measurement stability.
Solution Approach 2:
The supporting member integrates several functions into a single component: structural support, electrical grounding, and wiring conduit. By merging these functions, the design avoids adding multiple separate components, thus improving measurement stability without proportionally increasing structural complexity.
3Volume of moving object
If the lower shielding body is made thinner to reduce size, then compactness is improved, but magnetic shielding performance deteriorates
Solution Approach 1:
The magnetically shielded room employs a laminated structure combining different materials: the lower shielding body, upper shielding body, and side periphery shielding body are constructed with composite materials that provide enhanced magnetic shielding performance per unit thickness, allowing reduced overall size while maintaining shielding effectiveness.
Solution Approach 2:
Instead of relying solely on increasing the thickness of the lower shielding body (one-dimensional solution), the patent uses the supporting member extending from the exterior to the interior (adding a spatial dimension) to provide structural rigidity and grounding, thereby maintaining shielding performance with a thinner shielding body.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively suppresses positional deviations of measuring tools, maintains magnetic shield performance, and stabilizes the room during movement by dispersing weight and grounding the shielding bodies.
Implementation Method 1
an upper shielding body, a side periphery shielding body and a lower shielding body, which define a magnetically shielded internal space
Implementation Method 2
a pedestal having a higher rigidity than the lower shielding body is located on an under surface of the lower shielding body
Data Source
AI summary
A magnetically shielded room, that is capable of suppressing positional deviation of a measuring tool in an internal space, has an upper shielding body, a side periphery shielding body, and a lower shielding body, which form a magnetically shielded internal space of the magnetically shielded room. A pedestal has a higher rigidity than the lower shielding body, and is located on an under surface of the lower shielding body. First and second supporting members are located on and stand erect from the pedestal. The first and second supporting members penetrate the lower shielding body and extend into the internal space.