Power Management System Using RFID Detection

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Solution Overview

Problem

There is a significant issue with wasted power consumption, particularly from device chargers that continue to draw power even when not in use, leading to substantial global costs and environmental impact, necessitating a solution to manage power consumption efficiently.

Innovation Solution

A method and system utilizing RFID sensors and IP multimedia subsystem (IMS) with Session Initiation Protocol (SIP) to detect geoboundary events and RFID/LAN events, adjusting power consumption settings by controlling power distribution through the power grid, Power-over-Ethernet signaling, and X10 communications to optimize energy use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If device chargers remain plugged into power outlets continuously, then power availability is ensured, but power consumption increases and energy is wasted

Engineering Contradiction:

Improvepower consumptionVSAvoidpower availability

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The system performs preliminary detection of device presence using RFID tags before enabling power delivery. When a device with an RFID tag enters the detection range, the system proactively prepares to supply power, and when the device leaves, it preemptively cuts off power supply, preventing continuous energy waste while ensuring power availability when needed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms by continuously monitoring RFID tag signals from devices. Based on this feedback information about device presence or absence, the power supply system dynamically adjusts its state, turning power on when devices are detected and off when they are not, thereby resolving the contradiction between maintaining power availability and reducing energy consumption.

Inventive Principle:

Principle #23Feedback

2Loss of energy

If RFID detection systems are deployed to monitor device presence, then power consumption can be optimized, but system complexity increases

Engineering Contradiction:

Improvepower wasteVSAvoidsystem complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The system employs RFID technology which serves multiple functions: device identification, presence detection, and triggering power supply control. This multi-functional approach reduces the need for separate detection and control systems, thereby minimizing overall system complexity while achieving effective power optimization.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Devices equipped with RFID tags essentially perform part of the detection work themselves by continuously broadcasting their presence information. The power supply system simply needs to listen for these signals, reducing the complexity of active detection mechanisms that would otherwise be required.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8175756B2System and method to manage power consumption

Publication Date: 2012.05.08 TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

AI summary

A method implemented in a computer infrastructure having computer executable code having programming instructions tangibly embodied on a computer readable storage medium. The programming instructions are operable to detect an occurrence of at least one of a geoboundary event, a radio frequency identification (RFID) event; and a local area network (LAN) event. Additionally, the programming instructions are operable to adjust one or more power consumption settings of an environment based on the occurrence.