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公开(公告)号：US10345216B2
公开(公告)日：2019-07-09
申请号：US15504727
申请日：2015-08-20
Applicant: Research Triangle Institute
Abstract: Sample monitoring and flow control systems and methods are disclosed for monitoring of airborne particulates. A system may include a particle collection filter. The system also includes a fluid moving device for moving a sample through the particle collection filter. Further, the system includes a light source configured to direct irradiating light towards the particle collection filter. The system also includes a light detector positioned to receive the irradiating light passing through the particle collection filter and configured to generate a signal representative of an amount of the received light. Further, the system includes a controller configured to receive the signal and to control the fluid moving device based on the amount of the received light.
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公开(公告)号：US10018551B2
公开(公告)日：2018-07-10
申请号：US15877991
申请日：2018-01-23
Applicant: Research Triangle Institute
Inventor： Howard Jerome Walls , Anthony Clint Clayton , Randall J. Newsome , Paul G. Hoertz
CPC classification number: G01N15/1436 , G01N15/0205 , G01N15/1459 , G01N21/53 , G01N21/645 , G01N21/6486 , G01N2015/0046 , G01N2015/1486 , G01N2015/1493 , G01N2021/4721 , G01N2201/06113 , G01N2201/062
Abstract: A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light along a longitudinal axis to particles of a sample fluid flowing in the detection cavity. The photo-responsive material surrounds at least a portion of the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to the longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.
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公开(公告)号：US09915600B2
公开(公告)日：2018-03-13
申请号：US15048199
申请日：2016-02-19
Applicant: Research Triangle Institute
Inventor： Howard Jerome Walls , Anthony Clint Clayton , Randall J. Newsome , Paul G. Hoertz
CPC classification number: G01N15/1436 , G01N15/0205 , G01N15/1459 , G01N21/53 , G01N21/645 , G01N21/6486 , G01N2015/0046 , G01N2015/1486 , G01N2015/1493 , G01N2021/4721 , G01N2201/06113 , G01N2201/062
Abstract: A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light to particles of a sample fluid flowing in the detection cavity. The photo-responsive material faces the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to a longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.
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公开(公告)号：US20170268980A1
公开(公告)日：2017-09-21
申请号：US15504727
申请日：2015-08-20
Applicant: Research Triangle Institute
CPC classification number: G01N15/1404 , C12Q3/00 , G01N15/0205 , G01N15/06 , G01N15/0625 , G01N15/1459 , G01N21/53 , G01N21/6486 , G01N2015/0065 , G01N2015/0693 , G01N2015/1493 , G01N2201/062
Abstract: Sample monitoring and flow control systems and methods are disclosed for monitoring of airborne particulates. A system may include a particle collection filter. The system also includes a fluid moving device for moving a sample through the particle collection filter. Further, the system includes a light source configured to direct irradiating light towards the particle collection filter. The system also includes a light detector positioned to receive the irradiating light passing through the particle collection filter and configured to generate a signal representative of an amount of the received light. Further, the system includes a controller configured to receive the signal and to control the fluid moving device based on the amount of the received light.
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