Integrated RFID Tray with Interference Shielding
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Solution Overview
Problem
Existing RFID reading apparatuses require separate setup and maintenance for antennas and control units, leading to increased labor, time, and space requirements due to interference issues, which also affects other wireless tag reading systems.
Innovation Solution
A compact, integrated reading apparatus with a tray containing an electromagnetic wave reflecting or absorbing material positioned between the antenna and control unit, allowing for simultaneous operation without interference, and a moving mechanism for improved reading efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the antenna and control unit are disposed apart from each other to prevent interference, then radio wave interference is reduced, but device complexity and setup space increase
Solution Approach 1:
The patent combines the antenna unit and control unit into a single integrated reading apparatus. The antenna is mounted on the tray where it can read wireless tags on commodities placed there, while the control unit is integrated within the same apparatus, eliminating the need for separate setup and reducing overall system complexity.
Solution Approach 2:
The patent introduces a radio wave reflecting sheet as an intermediary component between the antenna unit and control unit. This reflecting sheet directs radio waves away from the control unit, preventing interference while allowing the antenna and control unit to be disposed close together in an integrated configuration.
2Object-affected harmful factors
If the antenna and control unit are disposed apart from each other to prevent interference, then radio wave interference is reduced, but maintenance time and labor increase
Solution Approach 1:
By integrating the antenna unit and control unit into a single reading apparatus, the patent reduces the number of separate components that require maintenance. The unified structure allows for easier troubleshooting and repair as technicians only need to access one apparatus rather than multiple separate units.
3Device complexity
If the antenna and control unit are integrated into a single apparatus, then device complexity is reduced, but radio wave interference increases
Solution Approach 1:
The radio wave reflecting sheet serves as a mediator that enables the integration of the antenna and control unit while preventing radio wave interference. The reflecting sheet is positioned to redirect radio waves away from the control unit, allowing both components to coexist in the same apparatus without interference.
Solution Approach 2:
The patent applies the radio wave reflecting sheet specifically in the region between the antenna unit and control unit. This localized application of a reflective material creates an interference-free zone for the control unit while maintaining the integrated compact structure of the reading apparatus.
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 reduces maintenance needs, minimizes downtime in case of failures, and enhances collective reading efficiency by integrating the antenna and control unit, while preventing radio wave interference and allowing for efficient data processing at checkout counters.
Implementation Method 1
The tray includes at least one of an electromagnetic wave reflecting material or an electromagnetic wave absorbing material disposed between the antenna unit and the controller so as to block the radio wave signal for reading the wireless tag from reaching the controller.
Implementation Method 2
The tray includes at least one of an electromagnetic wave reflecting material or an electromagnetic wave absorbing material disposed between the antenna unit and the controller so as to block the radio wave signal for reading the wireless tag from reaching the controller.
Data Source
AI summary
A reading apparatus includes a tray having a first surface side and a second surface side opposite the first surface side, an antenna unit disposed on the first surface side of the tray and configured to transmit a radio wave signal for reading a wireless tag and to receive a radio wave signal from the wireless tag, and a controller attached to the tray on the second surface side and configured to control the antenna unit to transmit the radio wave signal for reading the wireless tag. The controller reads data in the radio wave signal from the wireless tag received by the antenna unit. The tray includes at least one of an electromagnetic wave reflecting material or an electromagnetic wave absorbing material disposed between the antenna unit and the controller so as to block the radio wave signal for reading the wireless tag from reaching the controller.