Real-Time Remote Monitoring of Temperature and Humidity Within a Proton Exchange Membrane Fuel Cell Using Flexible Sensors

Sensors

Long-Sheng Kuo¹  Hao-Hsiu Huang¹  Cheng-Hao Yang¹ 

[1] Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan;

关键词: flexible humidity microsensor;    flexible temperature microsensor;    radio frequency module;    power density;   

DOI  :  10.3390/s110908674

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.