Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan.
Sensors (Basel). 2011;11(9):8674-84. doi: 10.3390/s110908674. Epub 2011 Sep 8.
This study developed portable, non-invasive flexible humidity and temperature microsensors and an in situ wireless sensing system for a proton exchange membrane fuel cell (PEMFC). The system integrated three parts: a flexible capacitive humidity microsensor, a flexible resistive temperature microsensor, and a radio frequency (RF) module for signal transmission. The results show that the capacitive humidity microsensor has a high sensitivity of 0.83 pF%RH(-1) and the resistive temperature microsensor also exhibits a high sensitivity of 2.94 × 10(-3) °C(-1). The established RF module transmits the signals from the two microsensors. The transmission distance can reach 4 m and the response time is less than 0.25 s. The performance measurements demonstrate that the maximum power density of the fuel cell with and without these microsensors are 14.76 mW·cm(-2) and 15.90 mW·cm(-2), with only 7.17% power loss.
本研究开发了用于质子交换膜燃料电池（PEMFC）的便携式、非侵入式、柔性湿度和温度微传感器及原位无线传感系统。该系统集成了三个部分：柔性电容式湿度微传感器、柔性电阻式温度微传感器和用于信号传输的射频（RF）模块。结果表明，电容式湿度微传感器具有 0.83 pF%RH(-1) 的高灵敏度，电阻式温度微传感器也表现出 2.94 × 10(-3) °C(-1) 的高灵敏度。所建立的 RF 模块传输来自两个微传感器的信号。传输距离可达 4 m，响应时间小于 0.25 s。性能测量表明，带有和不带有这些微传感器的燃料电池的最大功率密度分别为 14.76 mW·cm(-2) 和 15.90 mW·cm(-2)，仅损失 7.17%的功率。
