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Center Innovation Fund: KSC CIF

Wireless Multiplexed SAW Sensors, Year 1

Completed Technology Project

Project Description

Passive, Wireless Sensor System Operates by Launching of RF Pulses to the Sensors
Wireless Surface Acoustic Wave (SAW) Sensor is a new technology for obtaining multiple, real-time measurements under extreme environmental conditions. The objective for this project is to develop a wireless multiplexed sensor system that uses SAW sensors, with no batteries or semiconductors, that are passive and rugged, can operate down to cryogenic temperatures and up to hundreds of degrees Celsius, and can be used to sense a wide variety of parameters over reasonable distances (meters). This work continues the development of a novel wireless, passive, sensing system that uses surface acoustic wave (SAW) sensors. During this effort a new multiplexing concept, coherence multiplexing, was developed and an operational system was constructed and tested. A set of wireless hydrogen sensors was tested and found to work surprisingly well. In addition, magnetic field sensors, temperature sensors, and cryogenic liquid level sensors were demonstrated. Technical progress was made on sensor performance, types of sensors, but primarily on the new coherence multiplexing scheme. Algorithms were developed, new hardware configurations developed, and sensor enhancements achieved. More »

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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.