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US 5,434,419 AGranted
Process and device for monitoring apparatus for emission of electro-magnetic radiations
OwnerJean Decupperinventor
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OwnerJean Decupperinventor
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The invention relates to a process for monitoring the flowrate and intensity of an electro-magnetic emission, particularly of very short wave-length, in the vicinity of visible light, such as a wave emission in the ultra-violet, for germicidal or bacteriostatic or atmosphere purifying purposes, characterized in that a first and a second sensor are exposed to the radiations to be monitored, each sensor constituted by a transducer, particularly of the photovoltaic type, while a series of filters is interposed in front of said sensors, such that a first sensor is rendered exclusively sensitive to the radiations of the wave-length to be monitored, while the second sensor is rendered insensitive to said radiations, the currents issued by each of these transducers are permanently compared, the differential between the two currents being proportional to the intensity of the radiation monitored, which makes it possible to display this intensity. The invention also relates to a device for carrying out this process.
A process for monitoring the flowrate and intensity of an electro-magnetic emission, particularly of very short wave-length, in the vicinity of visible light, such as a wave emission in the ultra-violet, and of the type in which a first and a second sensor are exposed to the radiations to be monitored, the first sensor being a first photovoltaic transducer and the second sensor being a second photovoltaic transducer, while a series of filters is interposed in front of said sensors, such that a first sensor is rendered exclusively sensitive to the radiations of the wave-length to be monitored, while the second sensor is rendered insensitive to said radiations, the currents issued by each of these transducers are compared, the differential between the two currents being proportional to the intensity of the radiation monitored, which makes it possible to display this intensity,
A device for permanently detecting, controlling and monitoring an emitter of electro-magnetic radiations of wave-length located in the vicinity of visible light, particularly in the ultra-violet and used for especially for germicidal and atmosphere purifying purposes, more particularly in sensitive environments such as medical premises, hospitals or premises where food products are treated, air-conditioning installations or swimming pools, wherein said device comprises two identical photoelectric cells disposed in the field of the radiation monitored, a plurality of filters being interposed in front of the cells and the filters being such that a first cell is rendered sensitive to only the radiations of the wave-length monitored, whilst a second cell is rendered insensitive to said radiations, the voltaic currents issued by the two photoelectric cells being of different intensity by reason of this difference, and this for a normal period of emission of the emitter, and the two voltaic currents being collected at the terminals of a comparator programmed to tip a relay when the differential between the two currents falls below a determined reference value.
A device for remote-controlling a plurality of U.V. radiation emitter tubes, disposed in a bank, wherein each emitter tube belonging to said bank is connected to a central monitoring station by a wave guide, particularly in optical fiber form, each guide being specific to a tube and comprising a distal end facing said tube and a proximal end adapted to deliver the radiation transmitted to the level of the central station, this latter thus being adapted to receive the radiations emitted and transmitted by said wave guides by each of the tubes, and the central station is provided with an assembly of photovoltaic transducers, particularly photoelectric cells, provided with a first set of light modifying means intended to stop the radiations lying in the visible light, one light modifying means of said first set being provided to transform the ultra-violet radiations into visible light, particularly green light, and a second set of filters adapted to stop the radiations lying in the wave-length monitored, i.e., the ultra-violet radiations, and a third set of filters being rendered transparent to only the green light resulting from the transformation of the ultra-violet radiations, the central station comprising mechanical means, particularly an electric motor adapted to position said assembly of photovoltaic transducers successively facing the proximal end of each of the wave guides, each time allowing the supply of said transducers with radiation coming successively from each of the tubes.
Dependencies are inferred from the claim text.