• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Konferenzschrift
  4. Passive wireless irreversible humidity threshold sensor exploiting the deliquescence behavior of salts
 
  • Details
  • Full
Options
2012
Conference Paper
Title

Passive wireless irreversible humidity threshold sensor exploiting the deliquescence behavior of salts

Abstract
Passive RFID transponder applications, requiring integrated sensors, can greatly benefit from unconventional sensing strategies. Especially in situations where there is the need to continuously monitor environmental properties, but without having access to an energy source or an omnipresent reader station in communication range. Since in many cases the violation of a threshold value is of interest, alternative sensing strategies, exploiting irreversible phenomena not considered or even avoided before, have the potential of finding a successful use in low cost (e.g. chip-based sensor RFIDs) or lowest cost (e.g. chipless sensor RFIDs) wireless sensor applications. In this work, a stand-alone, simple, passive, wireless humidity threshold sensor is presented, which exploits the deliquescence behavior of salts. Based on a double planar coil arrangement, an oscillating circuit is formed. Its resonance frequency irreversibly changes, if a threshold relative humidity is exceede d for a certain exposition time.
Author(s)
Sauer, S.
Fischer, W.-J.
Mainwork
IEEE Sensors 2012. Vol.1  
Conference
Conference on Sensors 2012  
DOI
10.1109/ICSENS.2012.6411228
Language
English
Fraunhofer-Institut für Photonische Mikrosysteme IPMS  
  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024