INSTALLATION DE CONTROLE DE LA QUALITE ATMOSPHERIQUE NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON

A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ 10, UN INDICATEUR D'ETAT 16 A DIODE ET UN MICROPROCESSEUR 18 AVEC DISPOSITIFS PRODUISANT DES PREMIERES IMPULSIONS ELECTRIQUES DE L...

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Main Author HERBERT HELLER
Format Patent
LanguageFrench
Published 21.01.1983
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Abstract A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ 10, UN INDICATEUR D'ETAT 16 A DIODE ET UN MICROPROCESSEUR 18 AVEC DISPOSITIFS PRODUISANT DES PREMIERES IMPULSIONS ELECTRIQUES DE LARGEUR CONSTANTE, DES SECONDES IMPULSIONS DE LARGEUR VARIABLE EN FONCTION DE LA TENEUR EN GAZ, DES MOYENS DE COMPARAISON PRODUISANT DES TROISIEMES IMPULSIONS CARACTERISTIQUES DE L'ATMOSPHERE TRANSMISE A UN INDICATEUR 20.C.INSTALLATION A MONTER SUR DES MACHINES DE TRAVAUX SOUTERRAINS DANS LES MINES. A three-wire digital atmospheric sampling system, particularly adapted to detect methane in mines, wherein accuracy is increased by ratiometric analog-to-digital conversion synchronized by a microprocessor. A reset signal, and read-out pulses indicative of the atmospheric condition, are transmitted along the same signal wire as are digital ratiometric signals, thus enabling the use of three conductors only between an atmospheric sampling probe, a microprocessor, and a visual read-out console.
AbstractList A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ 10, UN INDICATEUR D'ETAT 16 A DIODE ET UN MICROPROCESSEUR 18 AVEC DISPOSITIFS PRODUISANT DES PREMIERES IMPULSIONS ELECTRIQUES DE LARGEUR CONSTANTE, DES SECONDES IMPULSIONS DE LARGEUR VARIABLE EN FONCTION DE LA TENEUR EN GAZ, DES MOYENS DE COMPARAISON PRODUISANT DES TROISIEMES IMPULSIONS CARACTERISTIQUES DE L'ATMOSPHERE TRANSMISE A UN INDICATEUR 20.C.INSTALLATION A MONTER SUR DES MACHINES DE TRAVAUX SOUTERRAINS DANS LES MINES. A three-wire digital atmospheric sampling system, particularly adapted to detect methane in mines, wherein accuracy is increased by ratiometric analog-to-digital conversion synchronized by a microprocessor. A reset signal, and read-out pulses indicative of the atmospheric condition, are transmitted along the same signal wire as are digital ratiometric signals, thus enabling the use of three conductors only between an atmospheric sampling probe, a microprocessor, and a visual read-out console.
Author HERBERT HELLER
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Snippet A.INSTALLATION DE CONTROLE ATMOSPHERIQUE, NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON.B.CARACTERISEE EN CE QU'ELLE COMPREND UN DETECTEUR DE GAZ...
SourceID epo
SourceType Open Access Repository
SubjectTerms ALARM SYSTEMS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
ORDER TELEGRAPHS
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
TESTING
Title INSTALLATION DE CONTROLE DE LA QUALITE ATMOSPHERIQUE NOTAMMENT DE LA TENEUR EN METHANE DANS LES MINES DE CHARBON
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