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Enhanced Codeset Passive Wireless SAW Sensor-Tags and System

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
Program Year/Program:
2011 / STTR
Agency Tracking Number:
100144
Solicitation Year:
2010
Solicitation Topic Code:
T7.01
Solicitation Number:
Small Business Information
Applied Sensor Research & Development Corporation
1195 Baltimore-Annapolis Boulevard, Unit #2 Arnold, MD 21012-1815
View profile »
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2011
Title: Enhanced Codeset Passive Wireless SAW Sensor-Tags and System
Agency: NASA
Contract: NNX11CI27P
Award Amount: $99,999.00
 

Abstract:

The proposed project will develop a set of at least 100 passive wireless surface acoustic wave (SAW) RFID sensor-tags for near-simultaneous remote monitoring of groups of conventional sensors. Coded SAW sensor-tags have been demonstrated by ASR & D under NNX09CE49P to be capable of providing a passive wireless interface to external sensors, including switches, thermistors, and strain gages, as well as external sensors that generate voltages. These sensor-tags consist of a SAW device with an antenna attached to one port and sensor(s) and reference impedance(s) connected to the other ports. RF signals of the correct frequency range are reflected off of the surface wave device, and their reflection characteristics are modified by changes in the impedance/voltage of the attached sensor(s). Under NNX10RA68P a set of 32 individually identifiable coded SAW temperature sensor devices that avoids the serious problems with code collision seen in conventional SAW RFID systems was developed using CDMA and TDMA. Wireless measurement confirmed the ability to selectively detect any single sensor out of the combined response of multiple sensors. The proposed effort will incorporate direct sequence spread spectrum (DSSS) codes into SAW tag devices also using time diversity, to produce sets of more than 100 individually identifiable coded sensor-tags. DSSS coding has been demonstrated by researchers at the University of Maine to produce sets codes with good auto- and cross-correlation properties. These sensor-tags will be tested to verify that they can be used as an interface to external pressure sensors and strain gages. This project will also evaluate the wireless reader system architectures commercially available and currently being developed at ASR & D and at other research institutions to determine what system architecture is most beneficial for operation with the codesets developed. This will form the basis of recommendations for future system development work.

Principal Investigator:

Jacqueline H. Hines
Principal Investigator
4105444664
jhines@asrdcorp.com

Business Contact:

Jacqueline H. Hines
Business Official
4105444664
jhines@asrdcorp.com
Small Business Information at Submission:

Applied Sensor Research & Development Corporation
1195 Baltimore-Annapolis Boulevard, Unit #2 Arnold, MD 21012-1815

EIN/Tax ID: 203272943
DUNS: N/A
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
University of Maine
5717 Corbett Hall
Orono, ME 04469-5717
Contact: James S., IV Ward