Dual RF Interface RFID Tag for Mobile Transaction Interaction
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Solution Overview
Problem
Conventional RFID tag devices are limited in their ability to facilitate various transactions and do not allow users to easily interact with or review transaction records, as they are typically mounted in a vehicle and require access to a website for account information.
Innovation Solution
A dual RF interface RFID tag device that can be used with a mobile device, allowing interaction and transaction record review, featuring a first RF interface for communication with the mobile device via NFC and a second RF interface for communication with an RFID reader, along with an energy collection circuit to power the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an RFID tag device is mounted in a vehicle for toll transactions, then the device can facilitate wireless transactions, but the device cannot be easily moved between vehicles and the user cannot interact with it
Solution Approach 1:
The RFID tag device is designed with dual RF interfaces: a first RF interface for NFC communication with mobile devices and a second RF interface for traditional RFID reader communication. This multi-functionality allows the device to be used both as a portable transaction tool with a mobile device and as a traditional vehicle-mounted toll tag, resolving the contradiction between portability and ease of operation.
Solution Approach 2:
The mobile device serves as an intermediary between the user and the RFID tag device. The mobile device provides the user interface for interacting with the RFID tag, displaying transaction records, and managing accounts. This intermediary approach allows the RFID tag to remain simple while providing rich user interaction capabilities through the mobile device.
2Reliability
If an RFID tag device is mounted permanently in a vehicle, then the device can facilitate toll transactions, but the device cannot be easily moved to another vehicle
Solution Approach 1:
The device combines traditional RFID toll transaction capability with mobile device compatibility through dual RF interfaces. This allows the same device to reliably facilitate toll transactions when mounted in a vehicle while also being portable when used with a mobile device, eliminating the need to choose between reliability and portability.
Solution Approach 2:
The mounting configuration of the RFID tag device becomes dynamic rather than fixed. The device can be permanently mounted in a vehicle for toll transactions or removed and used with a mobile device for portable transactions. This dynamic reconfiguration capability allows the device to adapt between different use scenarios without compromising either transaction reliability or portability.
3Ease of operation
If a user must access account information via a website, then the system can maintain security, but the user cannot easily review transaction records
Solution Approach 1:
The mobile device acts as an intermediary that simplifies the interface between the user and the RFID tag device's account information. Instead of requiring the user to manually access a website, the mobile device provides a user-friendly interface that displays transaction records, manages accounts, and communicates with the RFID tag device, making transaction record access easy while maintaining system security.
Solution Approach 2:
The traditional mechanical approach of requiring users to manually navigate to websites to check account information is replaced with automated wireless communication between the mobile device and RFID tag device. Transaction records are automatically retrieved and displayed on the mobile device, eliminating the need for manual website access and simplifying the user interface.
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
Enables users to conduct a variety of transactions using the RFID tag device with a mobile device, allowing easy interaction and record-keeping of transaction information, enhancing flexibility and usability compared to conventional RFID tag devices.
Implementation Method 1
A passive RFID tag device is powered by the reader signal; the passive RFID tag device collects energy from the reader signal and uses the collected energy to power the circuitry and transmit data to the reader.
Implementation Method 2
The transceiver is used for modulation and transmission of information, and for reception and demodulation of information, and is typically operated according to a known air interface or radio protocol.
Data Source
AI summary
An RFID tag device is associated with a mobile device to facilitate wireless transactions and identification. The RFID tag device includes two RF interfaces; one can communicate with RF tag readers, and one can communicate with the mobile device. The RFID tag device can be operated in a passive mode and stores transaction information for later retrieval by the mobile device, or it can be operated in an active mode where it is powered by the mobile device through the RF interface for communicating with the mobile device so that it can be read via the RFID interface. The RFID tag device can further detect and ignore communications between the mobile device and another device using the same communications mode and used by the RFID tag device to communicate with the mobile device.