A Novel Finger-Controlled Passive RFID Tag Design for Human-Machine Interaction

Area of Science:

• Human-Computer Interaction
• Wireless Communication
• Antenna Design

Background:

• Radio Frequency Identification (RFID) offers potential for human-machine interaction but faces limitations in data processing and accuracy.
• Existing RFID systems often require complex processing and are susceptible to environmental interference, hindering practical applications.

Purpose of the Study:

• To propose a novel finger-controlled passive RFID tag for enhanced human-machine interaction.
• To develop an RFID tag whose state can be adjusted by finger contact, simplifying control and improving accuracy.

Main Methods:

• Design of a passive RFID tag featuring a dipole antenna with a T-match structure, allowing finger-actuated state changes.
• Development of tag arrays, exemplified by a 3x4 passive RFID keyboard, for manual control devices.
• Validation through simulations and measurements of tag and tag array performance.

Main Results:

• The finger-controlled tag's state is directly recognizable by RFID readers, eliminating the need for complex data processing.
• The tag's performance is robust against environmental interference, making it suitable for wireless switches and control buttons.
• A passive RFID keyboard array demonstrated precise, convenient, and practical command and text input.

Conclusions:

• The proposed finger-controlled passive RFID tag offers a practical solution for battery-less wireless control in human-machine interaction.
• The design overcomes limitations of complex data processing and environmental interference, paving the way for diverse applications like wireless keyboards and remote controllers.