Title: Multiple modes acoustic wave sensor
Application Number: 200580016798 Application Date: 2005.04.01
Publication Number: 1957252 Publication Date: 2007.05.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01N29/02;G01H13/00
Applicant(s) Name: Honeywell Int Inc. Address:
Inventor(s) Name: Liu James Z.
Attorney & Agent: chengtian zheng wangzhong zhong
Abstract:
    A multiple mode sensing system is described, which can be configured from an acoustic wave sensor that includes a plurality of sensing components for monitoring a chemical species. The plurality of sensing components can be disposed within a cavity formed from a plurality of walls of said acoustic wave sensor, such that each sensing component is coated with a differing sensing film. The multiple modes sensing system also includes a plurality of oscillators associated with sensing components, wherein each sensing component is generally located in a feedback loop with identical oscillators to thereby provide a multiple modes acoustic wave sensor that provides multiple modes frequency outputs for the detection and desorption of a chemical species.
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