Chip-implemented optical-sensing RFID tag with adaptive light detection for zero-sorting-error logistics systems

Abstract

Traditional RFID technology due to multiple tags concurrent responses lead to the sorting disorder, resulting in the accuracy of its logistics sorting system is difficult to break through the bottleneck of 0.01% -0.1%.This work proposes an innovative solution using light-activated tags and an integrated adaptive optical detection system with ambient light suppression. Compatible with standard RFID, its core innovation enables spatially unique, precise optical activation of target tags, eliminating identification errors from concurrent responses. Tape-out verification of ambient light adaptive optical sensing chip based on TSMC 180 nm CMOS process. This provides a practical, virtually error-free solution for high-value applications like airport logistics.