Dual-Chip RFID Sensor Architecture for Power Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in reducing power consumption, particularly in RFID systems where passive tags lack a power supply and require significant energy to transmit data signals efficiently.
Innovation Solution
An electronic device with a transparent substrate, an antenna, and two chips - one sensor chip to detect wireless signals and another chip operating in a power-saving mode that wakes up and processes signals only when a wireless signal is received, reducing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second chip operates continuously to process wireless signals, then signal processing capability is improved, but power consumption increases
Solution Approach 1:
The second chip dynamically adjusts its operational state between power-saving mode and work mode based on signal detection. When no wireless signal is detected, the chip operates in low-power mode; when a signal is detected, it switches to full operational mode to process the signal. This dynamic state change allows the system to maintain reliable signal processing capability when needed while significantly reducing power consumption during idle periods.
2Use of energy by moving object
If the second chip operates in power-saving mode most of the time, then power consumption is reduced, but response time to process signals increases
Solution Approach 1:
The first chip performs preliminary detection of wireless signals before they reach the second chip. When a signal is detected by the first chip, it immediately wakes up the second chip from power-saving mode and transfers the signal data to it. This preliminary action ensures that the second chip is alerted in advance and can quickly transition to work mode, minimizing the delay between signal arrival and processing initiation.
3Productivity
If both chips operate simultaneously, then processing capability is improved, but device complexity increases
Solution Approach 1:
The system segments the wireless signal processing function into two distinct chips with specialized roles: the first chip handles signal detection and preliminary processing, while the second chip handles main signal processing and data handling. This segmentation allows each chip to be optimized for its specific function and enables them to operate independently most of the time, reducing the coordination complexity between them while maintaining high overall processing capability when both are active.
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
This configuration minimizes power consumption by ensuring that only when a wireless signal is detected does the second chip switch from a power-saving mode to a work mode, reducing signal loss and enhancing energy efficiency in communication devices.
Implementation Method 1
an IC (Integrated Circuit) in the RFID tag is driven by an electromagnetic wave which is transmitted from an RFID reader to the RFID tag
Implementation Method 2
the sensor is configured to detect whether the antenna has received a wireless signal or not
Data Source
AI summary
An electronic device includes a transparent substrate, an antenna, a first chip, and a second chip. The antenna is disposed above the transparent substrate. The first chip includes a sensor. The sensor is configured to detect whether the antenna has received a wireless signal or not. The second chip is coupled to the first chip, and operates in a power-saving mode. When the antenna receives the wireless signal, the first chip wakes up the second chip such that the second chip switches from the power-saving mode to a work mode, and the first chip transmits the wireless signal to the second chip.