RFID Mobile Phone Tag Detection and Energy Management
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Solution Overview
Problem
Existing RFID-enabled mobile phones lack an efficient method to reliably and conveniently confirm the presence of attached portable objects, particularly in daily use scenarios, leading to potential loss and increased energy consumption.
Innovation Solution
A method for operating an RFID-enabled mobile phone that involves receiving and evaluating RFID signals from attached tags, presenting tag information to the user, and dynamically managing energy consumption based on user control commands and signal strength, allowing for quick confirmation of object presence and minimizing unnecessary energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RFID communication unit is continuously activated to monitor portable objects, then the reliability of object presence confirmation is improved, but the energy consumption increases
Solution Approach 1:
The RFID communication unit is activated periodically at predetermined intervals rather than continuously. The mobile telephone switches between operating modes (first mode for RFID communication, second mode for other functions) in periodic cycles, allowing the RFID tag to be detected at regular intervals while conserving energy during non-RFID periods.
Solution Approach 2:
The system dynamically switches between different operating modes based on the timing cycle. The mobile telephone transitions from a first operating mode (RFID communication active) to a second operating mode (RFID communication inactive) and back, adapting its state according to the periodic detection requirements rather than maintaining a fixed continuous operation state.
2Loss of information
If the RFID communication unit is activated frequently to provide up-to-date information, then the timeliness of information is improved, but the loss of time for battery recharging increases
Solution Approach 1:
The system implements periodic information updates at predetermined intervals rather than continuous real-time monitoring. This timing cycle provides sufficiently up-to-date information for user needs while minimizing the frequency of RFID unit activation, thereby reducing overall energy consumption and extending battery life between charges.
3Adaptability or versatility
If the mobile telephone switches between operating modes frequently, then the functionality is improved, but the device complexity increases
Solution Approach 1:
The mobile telephone employs dynamic mode switching between a first operating mode (with RFID communication unit active) and a second operating mode (with RFID communication unit inactive). This dynamic adaptation allows the device to flexibly change its operational state according to the periodic timing cycle, providing multi-functionality while managing complexity through structured mode transitions.
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 efficient and reliable confirmation of portable objects' presence, reducing the risk of loss and optimizing energy use by activating the RFID communication unit only when needed, providing timely and secure confirmation for users.
Implementation Method 1
operating the RFID communication unit for receiving an RFID signal from an RFID tag that is attached to the at least one portable object
Data Source
AI summary
A method is disclosed of operating a RFID-enabled mobile telephone for indicating information of at least one portable object (e.g. key, passport, glasses or medical box). The mobile telephone has an RFID communication unit and the method includes operating the RFID communication unit for receiving an RFID signal from an RFID tag that is attached to the at least one portable object; evaluating the received RFID signal for determining tag information; and presenting the tag information to the user of the mobile telephone for indicating current information of the at least one portable object. This way, up-to-date information of the portable objects is available precisely when needed.