Annular RFID Casing for Pressurized Fluid Containers
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Solution Overview
Problem
Existing methods for attaching RFID identification devices to fluid containers are costly and complex, and can lead to interference issues between adjacent containers on conveyor chains, affecting accurate data reading due to the variety of container shapes and materials.
Innovation Solution
An annular casing with a diameter of 3 to 15 cm, featuring an attachment surface that can be selectively secured or separated, with a pin passing through the housing to attach around the valve, allowing for flexible attachment and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fastening methods (glue, rivets, welding) are used to attach RFID devices to containers, then the attachment is secure, but the manufacturing cost increases and the process becomes complex
Solution Approach 1:
The fastening system is segmented into modular components: the annular casing with integrated attachment surfaces, removable fixing members (clips, tabs, or latches), and corresponding engagement features on the container. This segmentation allows each component to be optimized independently and simplifies assembly compared to monolithic fastening methods.
Solution Approach 2:
The annular casing acts as an intermediary element between the RFID device and the container. It provides a standardized interface that simplifies attachment while ensuring secure fastening, mediating between the electronic component and the diverse container types without requiring direct customization for each container.
2Adaptability or versatility
If the annular casing is made small to fit around container orifices, then it can accommodate various container sizes, but the RFID antenna size is constrained
Solution Approach 1:
The annular casing utilizes the radial dimension efficiently, with an inner diameter adapted to the container orifice while maintaining sufficient radial thickness for the RFID antenna. This dimensional optimization allows the antenna to achieve adequate area for functionality while the casing remains compact enough to fit various container sizes.
3Device complexity
If the attachment surface is permanently fixed to the annular casing, then the structure is simplified, but the identification device cannot be selectively removed without damage
Solution Approach 1:
The attachment surface transitions from a static, permanent connection to a dynamic, reversible connection. The removable fixing members can be engaged and disengaged as needed, allowing the RFID device to be securely attached during operation and easily removed for replacement, repair, or reconfiguration without damaging the container or the device.
4Productivity
If RFID devices are attached close to each other on conveyor chains, then productivity is maintained, but interference between adjacent devices affects reading accuracy
Solution Approach 1:
The attachment surface extends toward the central opening of the annular casing, positioning the RFID device away from the container body and other adjacent devices. This extraction of the RFID element from the crowded assembly area reduces electromagnetic interference between closely spaced devices on the conveyor chain while maintaining productive throughput.
Data Source
Figure 1~5
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Figure 10~11
AI summary
The device has a remote electronic identification unit i.e. radiofrequency identification antenna, arranged on a support that is mechanically fixed on a pressurized fluid container (5), where the antenna is in the form of ring or capsule. The support has a circular annular case (2) provided with a removable attachment surface i.e. circular edge, that is extended towards a central orifice of the case, in mounted position. The case is situated around a valve (6) with the attachment surface situated between a body of the container and a valve body fixed on the container. Independent claims are also included for the following: (1) a pressurized fluid container comprising an identification device (2) a method for mounting an identification device.