NFC Data Carrier on Metal Objects
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Solution Overview
Problem
Near-field communication (NFC) data carriers experience reduced transmission and induction efficiency when mounted on metal objects due to interference from the surrounding metal material, leading to decreased reading efficiency and increased costs with the need for specialized RFID readers.
Innovation Solution
A compact NFC data carrier design featuring a housing with a magnetic core and coil set, where the coil is wound around the core and connected to a near-field communication chip, allowing for efficient magnetic induction and wireless signal transmission through the coil set, even when mounted on metal objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If NFC data carrier is mounted on metal object, then data carrier can be applied to metal products, but data transmission efficiency and induction efficiency decrease due to metal interference
Solution Approach 1:
The patent introduces a non-metallic housing as an intermediary layer between the NFC data carrier and the metal object. This housing made of plastic or polymer material acts as a mediator that prevents direct contact between the NFC components and metal, thereby eliminating metal interference while maintaining the ability to mount on metal objects.
Solution Approach 2:
The patent extracts the NFC electronic assembly from direct contact with the metal surface by placing it inside a separate non-metallic housing. This separation removes the harmful interaction between metal and NFC components while preserving the mounting functionality on metal objects.
2Ease of operation
If RFID reader is used to read data, then data can be read from RFID data carrier, but cost increases due to expensive specialized readers
Solution Approach 1:
The patent makes the NFC data carrier compatible with universal NFC readers such as smartphones, which are widely available and inexpensive. By designing the data carrier to work with standard NFC technology rather than specialized RFID readers, the system achieves broad universality and reduces costs.
Solution Approach 2:
The patent replaces expensive, specialized RFID readers with inexpensive, widely-available NFC-capable devices like smartphones. This substitution dramatically reduces the cost barrier for data reading while maintaining functionality.
3Adaptability or versatility
If housing diameter is reduced to fit metal objects, then mounting on small metal components is enabled, but space for electronic assembly is reduced
Solution Approach 1:
The patent employs a nested structure where the electronic assembly is compactly arranged within the housing. The circuit board and NFC components are efficiently positioned to maximize space utilization, allowing the housing to be small enough for metal objects while still accommodating all necessary electronic components.
Solution Approach 2:
The patent uses a compact housing design with optimized wall thickness and internal spacing. The housing structure is designed to be minimal yet sufficient for protection, allowing small diameter while providing adequate space for the electronic assembly through efficient spatial arrangement.
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 design enhances data transmission and reading efficiency while maintaining structural integrity of the metal object, allowing for effective data retrieval using common devices like smartphones without the need for expensive RFID readers.
Implementation Method 1
The coil set is provided on the second side of the circuit board and includes a magnetic core and a coil, wherein the coil is wound around the magnetic core and is electrically connected to the near-field communication chip
Data Source
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AI summary
A near-field communication data carrier (100) is adapted to be mounted in a metal object (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27) including a housing (110), an electronic assembly (120). The electronic assembly (120) is disposed in the housing (110) and includes a circuit board (121), a near-field communication chip (122), and a coil set. The circuit board (121) has a first side (121a) and a second side (121b), which are back to each other. The near-field communication chip (122) is disposed on the first side (121a). The coil set is disposed on the second side (121b). The coil set includes a magnetic core (123) and a coil (124). The coil (124) is wound around the magnetic core (123) and is electrically connected to the near-field communication chip (122).