USA flag logo/image

An Official Website of the United States Government

Passive Wireless Cryogenic Liquid Level Sensors Using Orthogonal Frequency…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2006 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
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: 2006
Title: Passive Wireless Cryogenic Liquid Level Sensors Using Orthogonal Frequency Coded Acoustic Wave Devices
Agency: NASA
Contract: NNK06OM23C
Award Amount: $99,763.00


This proposal describes the development of passive wireless surface acoustic wave (SAW) based liquid level sensors for NASA application to cryogenic liquid level sensing. Orthogonal Frequency Coded (OFC) SAW devices have been demonstrated as passive wireless temperature sensors in NASA Contract NNK04OA28C, and are being further developed under NNK05OB31C. The proposed liquid level sensors will use damping of the acoustic wave caused by mass loading of the liquid to produce fast, reversible liquid level sensors. The proposed research will apply the results of ongoing work on OFC sensors and will evaluate their operation as liquid level sensors in selected liquids of interest at cryogenic temperatures. Issues to be investigated include the stability of various SAW substrates when exposed to various (extreme and gradual) temperature changes, the effects on device integrity and performance of thermal cycling to cryogenic temperatures, and the effects of device exposure to various liquids and the reversibility thereof. The result of the proposed research will be an understanding of potential failure mechanisms in SAW sensors used at cryogenic temperatures, knowledge of the required operating parameters to ensure device reliability under likely operating conditions, and demonstration of the use of OFC SAW sensors for liquid level detection.

Principal Investigator:

Matthias Hamsch
Principal Investigator

Business Contact:

Jacqueline Hines
Business Official
Small Business Information at Submission:

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

EIN/Tax ID: 203272943
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
University of Central Florida
4000 University Boulevard
Orlando, FL 32816
Contact: Andrea Adkins
Contact Phone: (407) 823-2414
RI Type: Nonprofit college or university