Development of Devices Using Flexible Substrates: RFID Tags and Temperature Sensing Arrays
Date Issued
2006
Date
2006
Author(s)
Chang, Wei-Yao
DOI
zh-TW
Abstract
In this work, we develop radio frequency identification (RFID) tags and temperature sensor arrays using flexible substrates. The RFID tag operated at 915 MHz. The tag antenna is simulated by the Zeland IE3D. The goal of the design is to match the tag impedance as well as to maximize the directive gain. Four different tag antenna designs are proposed and fabricated on Cu membranes using MEMS process. The design parameters are the patterns and the dimensions of antennas. Simulated results of the RFID tags are also verified with the measured results the effective reading distances. For the temperature sensor array case, we develop an 8×8 sensing array using FPCB and analog temperature sensors MAX6607. The scanning circuit, which includes a microprocessor (8051) and multiplexers, is developed to scan the sensor array as well as to transfer the scanned data to a personal computer using RS232. For row scanning, the multiplexer provides the driving power to sensors. For column scanning, another multiplexer is used to receive the data outputs of the sensor. Furthermore, we also develop a C++ code which presents the measured real-time temperature distributions as two-dimensional color-map images on a computer monitor.
Subjects
可撓式
射頻辨識
標籤
人工皮膚
溫度感測陣列
Flexible
RFID
Tag
Artificial skin
Temperature sensor array
Type
thesis
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