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Wireless passive temperature sensor
United States Patent
| 8,240,911 | |
| August 14, 2012 | |
| View the Complete Patent at the US Patent & Trademark Office | |
| Wireless Passive Radiation Sensor | |
| A wireless passive temperature sensor comprising a surface acoustic wave (SAW) delay line is constructed on a piezoelectric substrate having a thermal coefficient of frequency. An array of addressable, wireless passive temperature sensors can be used to monitor an array of temperature points on a structure using a wireless reader. Each sensor can be monitored by measuring the frequency of maximum reflection in their respective bands. A wireless passive heat flux gauge uses two temperature sensors with different frequency and/or time delay responses to measure that temperature differential across a thermal conductor that has a well characterized thermal conductivity and thickness. | |
| 12/871,602 | |
| August 30, 2010 | |
| 374/117 ; 374/E11.011; | |
| G01K 11/26 (20060101); | |
| Search: </B></TD> <TD ALIGN="RIGHT" VALIGN="TOP" WIDTH="70%"> ;374/117-120,110,137,184,187,208,E11.011 | |
| STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U.S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention. |