Invention Grant
- Patent Title: Apparatus and method of photoacoustic sensor signal acquisition
- Patent Title (中): 光声传感器信号采集装置及方法
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Application No.: US13101039Application Date: 2011-05-04
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Publication No.: US08689607B2Publication Date: 2014-04-08
- Inventor: Thomas M. Rezachek , Gary P. Shubinsky , Michael Freeman
- Applicant: Thomas M. Rezachek , Gary P. Shubinsky , Michael Freeman
- Applicant Address: US NJ Morristown
- Assignee: Honeywell International Inc.
- Current Assignee: Honeywell International Inc.
- Current Assignee Address: US NJ Morristown
- Agency: Husch Blackwell LLP
- Main IPC: G01N21/00
- IPC: G01N21/00
Abstract:
A photoacoustic detector includes first and second microphones carried by an acoustic sensing chamber. Signals from the microphones are processed using lock-in detection to increase the signal-to-noise ratio. An acoustic pressure generator can be incorporated to calibrate the microphones.
Public/Granted literature
- US20120279280A1 Apparatus and Method of Photoacoustic Sensor Signal Acquisition Public/Granted day:2012-11-08
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