RFID Substrate Controller for Multi-Protocol Signal Coordination
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Solution Overview
Problem
Conventional RFID systems face challenges in efficiently managing the operation of multiple RFID devices with different protocols and frequencies, leading to issues such as missed signals and inefficient power usage, particularly when a high-frequency signal is not received by an interrogator while a low-frequency signal is present.
Innovation Solution
A radio-frequency identification system comprising a first and second RFID device, along with a controller that communicatively couples both devices, allowing the controller to control the operation of the first RFID device based on the state of the second device, including activation and deactivation based on RF signal detection and power management, enabling operation in different communication protocols and frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple RFID devices operate independently with different protocols and frequencies, then each device can function autonomously, but signal coordination fails and power usage becomes inefficient
Solution Approach 1:
The patent combines multiple RFID devices (operating at different frequencies and protocols) into a single integrated system with a centralized controller. The controller manages and coordinates all RFID devices, allowing them to work together as one unified system rather than independently, thereby improving signal detection reliability while maintaining manageable complexity through integrated control.
Solution Approach 2:
The controller is designed with multi-functionality to handle various RFID protocols and frequencies simultaneously. It can detect signals from different RFID devices operating under different standards (e.g., 125 kHz, 13.56 MHz, 2.4 GHz) and coordinate their operations universally, enabling the system to adapt to diverse RFID technologies without requiring separate control mechanisms for each.
2Reliability
If all RFID devices remain active continuously, then signal detection coverage is maximized, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the operational state of individual RFID devices based on real-time detection needs. The controller monitors which RFID devices are currently needed for signal detection and activates only those specific devices, while placing others in a low-power or inactive state. This dynamic control maintains adequate signal detection coverage while significantly reducing overall power consumption compared to keeping all devices continuously active.
Solution Approach 2:
The controller implements feedback mechanisms to monitor the operational status and signal detection effectiveness of each RFID device. Based on this feedback, the controller intelligently decides which devices should remain active and which can be deactivated to save power. This feedback-driven approach ensures that signal detection coverage is maintained at necessary levels while optimizing power usage by avoiding redundant active devices.
3Adaptability or versatility
If RFID devices operate at different frequencies, then protocol versatility is improved, but signal interference and coordination difficulty increase
Solution Approach 1:
The controller serves as an intermediary between multiple RFID devices operating at different frequencies and protocols. It receives signals from various RFID devices, translates and coordinates them according to the appropriate protocols, and manages their interactions. This intermediary role simplifies the coordination complexity by centralizing the protocol handling and frequency management functions within the controller, allowing diverse RFID devices to work together seamlessly.
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 solution ensures that both high-frequency and low-frequency signals are effectively communicated, preventing signal misses and optimizing power usage by dynamically managing the operation of the RFID devices based on their states and environmental conditions.
Implementation Method 1
radio-frequency identification (RFID) tag, which may take the form of a card. Such tags typically include an RFID substrate carrying a circuitry such as a semiconductor device including memory and one or more conductive traces that form an antenna
Data Source
AI summary
A radio frequency identification system comprises a radio-frequency identification substrate and an interrogator. In one embodiment, the radio-frequency identification substrate comprises a plurality of radio-frequency identification devices. In one embodiment, a controller on the substrate controls a first one of the plurality of radio-frequency identification devices based on a state of a second one of the plurality of radio-frequency identification devices. In one embodiment, an antenna system includes an S-shaped portion electrically coupled to an integrated circuit along a central portion of the S-shaped portion. Adjusting the parameters of the segments making up the S-shaped portion controls performance characteristics of a radio-frequency identification device.