Forward and back scattering loss compensated smoke detector

Forward and back scattering loss compensated smoke detector

A forward scattering loss compensated smoke sensor or smoke detector and a back scattering loss compensated smoke detector are disclosed. Both systems include first and second light sources for supplying a light signal into a fluid containing particulates. Both systems also include first and second...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: POORMAN, RICHARD N
Format: Patent
Sprache:eng
Schlagworte:
ALARM SYSTEMS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator POORMAN
RICHARD N
description A forward scattering loss compensated smoke sensor or smoke detector and a back scattering loss compensated smoke detector are disclosed. Both systems include first and second light sources for supplying a light signal into a fluid containing particulates. Both systems also include first and second photodetector devices for detecting directly transmitted, forward scattered and/or back scattered light. A ratiometric value or signal is produced in accordance with direct versus scattered detected light levels. The selection of forward versus back scattering particulate detection devices and methods is driven by the efficiency of the scattering which is a function of light source frequencies and particulate size.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US5352901A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US5352901A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US5352901A3</originalsourceid><addsrcrecordid>eNrjZLB2yy8qTyxKUUjMS1FISkzOVihOTiwpSS3KzEtXyMkvLlZIzs8tSM0rTixJTVEozs3PTlVISS1JTS7JL-JhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfGhwabGpkaWBoaOxoRVAAAKuy74</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Forward and back scattering loss compensated smoke detector</title><source>esp@cenet</source><creator>POORMAN; RICHARD N</creator><creatorcontrib>POORMAN; RICHARD N</creatorcontrib><description>A forward scattering loss compensated smoke sensor or smoke detector and a back scattering loss compensated smoke detector are disclosed. Both systems include first and second light sources for supplying a light signal into a fluid containing particulates. Both systems also include first and second photodetector devices for detecting directly transmitted, forward scattered and/or back scattered light. A ratiometric value or signal is produced in accordance with direct versus scattered detected light levels. The selection of forward versus back scattering particulate detection devices and methods is driven by the efficiency of the scattering which is a function of light source frequencies and particulate size.</description><edition>5</edition><language>eng</language><subject>ALARM SYSTEMS ; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES ; MEASURING ; ORDER TELEGRAPHS ; PHYSICS ; SIGNALLING ; SIGNALLING OR CALLING SYSTEMS ; TESTING</subject><creationdate>1994</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19941004&amp;DB=EPODOC&amp;CC=US&amp;NR=5352901A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19941004&amp;DB=EPODOC&amp;CC=US&amp;NR=5352901A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>POORMAN; RICHARD N</creatorcontrib><title>Forward and back scattering loss compensated smoke detector</title><description>A forward scattering loss compensated smoke sensor or smoke detector and a back scattering loss compensated smoke detector are disclosed. Both systems include first and second light sources for supplying a light signal into a fluid containing particulates. Both systems also include first and second photodetector devices for detecting directly transmitted, forward scattered and/or back scattered light. A ratiometric value or signal is produced in accordance with direct versus scattered detected light levels. The selection of forward versus back scattering particulate detection devices and methods is driven by the efficiency of the scattering which is a function of light source frequencies and particulate size.</description><subject>ALARM SYSTEMS</subject><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</subject><subject>MEASURING</subject><subject>ORDER TELEGRAPHS</subject><subject>PHYSICS</subject><subject>SIGNALLING</subject><subject>SIGNALLING OR CALLING SYSTEMS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1994</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLB2yy8qTyxKUUjMS1FISkzOVihOTiwpSS3KzEtXyMkvLlZIzs8tSM0rTixJTVEozs3PTlVISS1JTS7JL-JhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfGhwabGpkaWBoaOxoRVAAAKuy74</recordid><startdate>19941004</startdate><enddate>19941004</enddate><creator>POORMAN; RICHARD N</creator><scope>EVB</scope></search><sort><creationdate>19941004</creationdate><title>Forward and back scattering loss compensated smoke detector</title><author>POORMAN; RICHARD N</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5352901A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1994</creationdate><topic>ALARM SYSTEMS</topic><topic>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</topic><topic>MEASURING</topic><topic>ORDER TELEGRAPHS</topic><topic>PHYSICS</topic><topic>SIGNALLING</topic><topic>SIGNALLING OR CALLING SYSTEMS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>POORMAN; RICHARD N</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>POORMAN; RICHARD N</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Forward and back scattering loss compensated smoke detector</title><date>1994-10-04</date><risdate>1994</risdate><abstract>A forward scattering loss compensated smoke sensor or smoke detector and a back scattering loss compensated smoke detector are disclosed. Both systems include first and second light sources for supplying a light signal into a fluid containing particulates. Both systems also include first and second photodetector devices for detecting directly transmitted, forward scattered and/or back scattered light. A ratiometric value or signal is produced in accordance with direct versus scattered detected light levels. The selection of forward versus back scattering particulate detection devices and methods is driven by the efficiency of the scattering which is a function of light source frequencies and particulate size.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_US5352901A
source esp@cenet
subjects ALARM SYSTEMS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
title Forward and back scattering loss compensated smoke detector
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T18%3A35%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=POORMAN;%20RICHARD%20N&rft.date=1994-10-04&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS5352901A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true