RFID-Enabled Wireless Terminal Power Management
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Solution Overview
Problem
Existing wireless communication terminals face challenges in efficiently managing power consumption during data transfer operations, particularly in transitioning between active and standby states, which affects battery life and user convenience when connecting with external devices like smartphones.
Innovation Solution
A wireless communication terminal equipped with an RFID module that operates in two states: one for active communication and another for power conservation, using a power supply control unit to manage power distribution based on residual energy levels and read requests from external terminals, ensuring efficient data transfer and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the wireless communication terminal operates in standby state to save power, then power consumption is reduced, but the terminal cannot respond to external communication requests
Solution Approach 1:
The RFID module performs preliminary actions by storing communication setting information and data presence/absence information in advance, allowing the terminal to respond to external requests without fully activating the wireless communication module. The RFID module detects read requests and triggers state transitions based on pre-stored data information.
Solution Approach 2:
The RFID module acts as an intermediary between the external terminal and the wireless communication module. It handles initial communication setup and decision-making about whether to activate the full wireless communication function, based on detecting read requests and checking stored data presence information.
2Productivity
If the wireless communication module is activated to transfer data, then data transfer capability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the operational state of the wireless communication module based on real-time conditions. The module transitions between standby state (low power) and active state (high productivity) depending on whether data transfer is actually needed, as determined by RFID module detection of read requests and verification of data presence.
Solution Approach 2:
The system changes the operational parameters of the wireless communication module by transitioning between distinct states: standby state for power saving and active state for data transfer. This parameter change is triggered by the RFID module's detection of read requests and verification that transmission target data exists.
3Device complexity
If the terminal waits for user operation to start communication, then power management is simplified, but user convenience deteriorates
Solution Approach 1:
The terminal performs self-service by automatically detecting read requests through the RFID module and autonomously deciding whether to activate the wireless communication module based on pre-stored data presence information. This eliminates the need for user intervention while maintaining appropriate power management.
Solution Approach 2:
The system implements feedback mechanisms where the RFID module continuously monitors for read requests from external terminals and provides feedback to the control unit. Based on this feedback and the stored data presence information, the system automatically triggers state transitions of the wireless communication module without user input.
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 allows for automatic state transitions and optimized power usage, enabling seamless data transfer without user intervention and minimizing unnecessary power consumption, thus enhancing battery life and user experience.
Implementation Method 1
an RFID module configured to store wireless communication setting information which is used for the external terminal to perform wireless communication with the wireless communication module and data presence/absence information indicating presence/absence of the transmission target data, the RFID module detecting a read request to read the wireless communication setting information transmitted from the external terminal
Implementation Method 2
A method of using Near Field Communication (NFC) has been known as a method of transferring image data stored in a wireless communication terminal
Data Source
AI summary
A wireless communication terminal includes: a wireless communication module, a power supply unit configured to perform electric power supply to the wireless communication module, a power supply control unit configured to perform power supply control of the power supply unit, a control unit configured to set parameters of a layer higher than a data link layer to parameters of the wireless communication module, an RFID module configured to store wireless communication setting information and data presence/absence information and wirelessly transmit the wireless communication setting information, and a data update unit configured to update the data presence/absence information stored in the RFID module.