Abstract:
An apparatus for placement on or in a body of water for hyperspectral imaging of material in the water comprises an artificial light source and a hyperspectral imager. These are arranged so that in use light exits the apparatus beneath the surface of the water and is reflected by said material before re-entering the apparatus beneath the surface of the water and entering the hyperspectral imager. The hyperspectral imager is adapted to produce hyperspectral image data having at least two spatial dimensions.
Abstract:
A multichannel fluorosensor includes an optical module and an electronic module combined in a watertight housing with an underwater connector. The fluorosensor has an integral calibrator for periodical sensitivity validation of the fluorosensor. The optical module has one or several excitation channels and one or several emission channels that use a mutual focusing system. To increase efficiency, the excitation and emission channels each have a micro-collimator made with one or more ball lenses. Each excitation channel has a light emitting diode and an optical filter. Each emission channel has a photodiode with a preamplifier and an optical filter. The electronic module connects directly to the optical module and includes a lock-in amplifier, a power supply and a controller with an A/D converter and a connector. The calibrator provides a response proportional to the excitation intensity, and matches with spectral parameter of fluorescence for the analyzed fluorescent substance.
Abstract:
A method involving the automatic, online dilution of polymer and/or colloid solutions, such that, when the diluted polymer stream flows through suitable detectors, non-equilibrium processes, such as polymerization, degradation and aggregation, can be monitored. The dilution involves a reacting or stock solution of polymer and/or colloid, and at least one solvent. The online dilution technique can also be used to assess the effects of solvent quality and other solutes on polymer/colloid characteristics and reactions, and also permits equilibrium characterization of polymers/colloids by making a single stock solution of the polymer/colloid. A device is developed that is capable of automatically and continuously extracting fluid from a polymer-containing vessel and mixing this with a solvent such that the final fluid is dilute enough that single particle light scattering, spectrophotometric and other measurements can be made on it. Whereas many sampling and dilution devices exist, the novelty of this invention consists in its ability to deal with very high viscosities, including those laden with bubbles, and to introduce only a short delay time between sampling and measurement. The device is ideally suited for situations where the viscosity of the polymer-containing vessel changes over a wide range during the course of a reaction; e.g. polymerization, polymer degradation, aggregation, and others. Furthermore, provision is made for modular conditioning stages, such as changing solvent conditions, evaporating monomer, filtering, etc. The amount of sample actually withdrawn for measurement is very low, normally on the order of 0.25 ml to 5 ml per hour. The device can also vary the dilution factor either automatically or manually during operation.
Abstract:
Method and apparatus for detecting the presence of hydrocarbons and other substance that fluoresces or absorbs light within a body of water which utilizes a controlled submersible vehicle scanning at or near the water bottom. The method utilizes a selected frequency light source as carried by the submersible to scan the water bottom, and the returned light energy, either at the wavelength of oil fluorescing in water or the source frequency backscatter, is detected and processed for the water bottom as well as a water region that is a selected distance above the water floor. Alternative forms of apparatus are disclosed for carrying out the functions of both oil fluorescence detection, and for obtaining differential absorption readings as to light source backscatter energy that is created by the ambient water and other factors in the water environment such as marine life, turbidity, etc.
Abstract:
A device is developed that is capable of automatically and continuously extracting fluid from a polymer-containing vessel and mixing this with a solvent such that the final fluid is dilute enough that single particle light scattering, spectrophotometric and other measurements can be made on it. Whereas many sampling and dilution devices exist, the novelty of this invention consists in its ability to deal with very high viscosities, including those laden with bubbles, and to introduce only a short delay time between sampling and measurement. The device is ideally suited for situations where the viscosity of the polymer-containing vessel changes over a wide range during the course of a reaction; e.g. polymerization, polymer degradation, aggregation, and others. Furthermore, provision is made for modular conditioning stages, such as changing solvent conditions, evaporating monomer, filtering, etc. The amount of sample actually withdrawn for measurement is very low, normally on the order of 0.25ml to 5ml per hour. The device can also vary the dilution factor either automatically or manually during operation.
Abstract:
본 발명은 자동적으로 연속하여 유체를 중합체-함유 용기로부터 추출하고 이것을 용매와 혼합시켜, 최종 유체를 이것에 대해 단일 입자 빛 산란, 분광광도 측정 및 다른 측정이 이루어질 수 있도록 충분히 희석시킬 수 있는 장치에 관한 것이다. 수많은 샘플링 및 희석 장치가 존재하나, 본 발명의 신규성은 거품이 많은 것들을 포함하여 매우 높은 점도를 처리할 수 있고, 샘플링과 측정 사이에 단지 짧은 지연 시간을 포함할 수 있는 이의 능력으로 구성된다. 장치는 중합체-함유 용기의 점도가 반응 동안 광범한 범위로 변화하는 경우, 예컨대 중합반응, 중합체 분해반응, 응집반응 및 기타 반응에 이상적으로 적합하다. 또한, 용매 조건을 변화시키고, 단량체를 증발시키고, 여과하는 등의 모듈라 컨디셔닝 단계가 제공된다. 측정을 위해 회수되는 샘플의 양은 매우 적으며, 보통은 시간 당 0.25 ml 내지 5 ml이다. 또한 장치는 작업 동안 자동적으로 또는 수동적으로 희석 배수를 변화시킬 수 있다.
Abstract:
PROBLEM TO BE SOLVED: To provide a carbon dioxide partial pressure measuring apparatus capable of accurately measuring carbon dioxide partial pressure even when it is disposed in an environment such a deep sea having a high ambient hydraulic pressure.SOLUTION: A through hole 33c penetrating a main body 33 is formed in the main body 33 connected to a light source unit 27 and light receiving element unit 29. An amplifier substrate 71 of the light receiving element unit 29 is electrically connected to a CPU substrate 63 of the light source unit 27, and a signal line 31 for transmitting a detection result amplified by the amplifier substrate 71 is disposed through the through hole 33c formed in the main body 33.
Abstract:
PROBLEM TO BE SOLVED: To provide a multichannel fluorescence sensor capable of analyzing a fluorescent substance, such as, chlorophyll in natural water. SOLUTION: The multichannel fluorescence sensor includes one or a plurality of excitation channels, one or a plurality of light emission channels, and micro collimators having one or more spherical lenses. Each excitation channel has light-emitting diodes and optical filters. Each light emission channel has a photodiode with a preamplifier and an optical filter.Each electronic module directly connects to an optical module, and includes a controller having a lock-in amplifier, a power supply, an A/D converter, a connector, and the fluorescence spectrum of a fluorescent substance is measured. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
A leak detection system includes a light source configured to output emitted light into a region of water, and a light detector configured to receive returned light from the region of the water and to output a detector signal indicative of the returned light. The leak detection system also includes at least one controller configured to detect hydrocarbons within the region of the water in response to detecting a hydrocarbon wavelength within the returned light, to determine at least one position of the hydrocarbons within the region of the water based on a time difference between a first time at which the emitted light is output from the light source and a second time at which the returned light at the hydrocarbon wavelength is received at the light detector, and to generate a three-dimensional model of a subsea structure based on the detector signal.
Abstract:
Methods and apparatus for launch and recovery of a remote inspection device within a liquid storage tank. In one embodiment, the tank is accessed by opening an entrance hatch and then injecting a vapor suppression foam across a surface of a stored liquid mass to form a foam layer. A launching system having a remote inspection device is attached to the entrance hatch to define a launch and recovery space sealed from an external environment and isolated from the stored liquid mass in the tank via a valve and the foam layer. The launch and recovery space is purged of hazardous vapors by injection of an inert gas prior to launch and recovery of the remote inspection device. Prior to removal of the launching system, the surface of the stored liquid mass is re-coated with vapor suppression foam.