RFID Storage Case Shielding for Adjacent Feeder Interference
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Solution Overview
Problem
When multiple storage cases are placed side by side, radio waves from a reader/writer can interfere with RFID tags in adjacent cases, leading to unintended reading or writing of information.
Innovation Solution
The storage case design includes a second-side wall made of a radio wave shielding material, with a sloped surface inside the storage space, preventing interference from other reader/writers and controlling the flow of electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple storage cases are placed side by side in the feeder, then the productivity and efficiency of component supply are improved, but radio waves from reader/writer can interfere with RFID tags in adjacent cases causing information reading or writing errors
Solution Approach 1:
The storage case is divided into separate compartments or sections, each with its own RFID tag and component storage area. The partition walls between compartments act as radio wave shields, isolating the electromagnetic fields of adjacent RFID tags. This segmentation allows multiple storage cases to be placed side by side in the feeder without radio wave interference, maintaining both high productivity and reliable RFID communication.
Solution Approach 2:
Radio wave shielding materials (such as conductive coatings, metal meshes, or ferrite sheets) are introduced as intermediary elements between adjacent RFID tags in neighboring storage cases. These shielding materials block or absorb radio waves, preventing them from reaching adjacent RFID tags. This intermediary layer resolves the contradiction by allowing close placement of multiple storage cases while maintaining reliable RFID information accuracy.
2Area of stationary object
If storage cases are placed closer together to save space, then the device complexity and space utilization are improved, but radio wave interference between adjacent RFID tags increases
Solution Approach 1:
The storage case incorporates internal partition walls or dividers that segment the interior space into separate compartments. These partition walls serve dual purposes: they organize components within the storage case and simultaneously function as radio wave shields between adjacent storage cases. This segmentation enables compact arrangement of multiple storage cases in the feeder while preventing radio wave interference through the shielding partitions.
Solution Approach 2:
Thin radio wave shielding films or coatings are applied to the walls or partitions of the storage case. These thin films provide effective electromagnetic shielding without adding significant thickness or weight to the storage case structure. This allows storage cases to be placed closer together for better space utilization while the thin shielding films prevent radio wave interference between adjacent RFID tags.
3Reliability
If a radio wave shield is added to the storage case to prevent interference, then the RFID information accuracy is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Thin radio wave shielding films or conductive coatings are applied to the interior surfaces of the storage case walls or partitions. These thin films provide effective electromagnetic shielding while adding minimal complexity to the manufacturing process. The films can be applied during the existing manufacturing process using conventional coating or lamination techniques, avoiding the need for separate shielding components or complex assembly steps.
Solution Approach 2:
The storage case is manufactured as a composite structure that integrates radio wave shielding properties into the base material. This could involve using conductive polymers, metal-infused plastics, or multi-layer composite materials that inherently provide electromagnetic shielding. This approach eliminates the need for separate shielding components, simplifying the manufacturing process while maintaining reliable RFID information accuracy.
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
Prevents unintended reading or writing of information between adjacent RFID tags and controls the supply speed of electronic components, reducing clogging and facilitating efficient management.
Implementation Method 1
one of the first-side wall portion or the second-side wall portion defines and functions as a radio wave shield
Implementation Method 2
electronic components drop to a feeder by their own weight from a component take-out port
Data Source
AI summary
A storage case includes first-side and second-side wall portions, and a storage space to store components therein and being defined by the first-side and second-side wall portions. The storage case includes a component removal opening and a sloped surface inside the storage space and extending towards the component removal opening. One of the first-side and second-side wall portions defines and functions as a radio wave shield.