Patent application number | Description | Published |
20090039866 | Fiber-Optic Current Sensor With Polarimetric Detection Scheme - The current in a conductor is measured by exploiting the Faraday effect in a sensing fiber. The light returning from the sensing fiber is split into at least two parts, at least one of which is analyzed by a first circular analyzer for generating a first signal. A second part may e.g. be analyzed by a second circular analyzer, and a third part may be analyzed by a linear analyzer. By combining the signals obtained in this way, the current induced phase delay in the returning light can be measured efficiently and accurately. | 02-12-2009 |
20090290165 | OPTICAL HIGH VOLTAGE SENSOR - An electro-optical high-voltage sensor includes a waveguiding sensing fiber of an electro-optical material. The electrical field of the voltage to be measured is substantially parallel to the longitudinal axis of the sensing fiber. The sensing fiber carries two orthogonally polarized light waves, with the applied field affecting the birefringence between the waves. Using an electro-optical waveguiding fiber in this configuration allows the voltage between two widely spaced points to be accurately measured. | 11-26-2009 |
20110072858 | METHOD FOR MANUFACTURING A FIBER OPTIC CURRENT SENSOR WITH INHERENT TEMPERATURE COMPENSATION OF THE FARADAY EFFECT - A method is provided for tuning the fiber optic retarder of a fiber optic current sensor towards a desired temperature dependence, the sensing fiber is exposed to a magnetic field or corresponding electric current and the sensor signal as well as the signal's dependence on the retarder temperature are measured. From this initial sensor signal and its temperature dependence, a target sensor signal can be determined, at which the dependence on the retarder temperature equals a desired value. Then, the retarder is thermally treated until the sensor signal reaches the target value. The method obviates the need for repetitively measuring the temperature dependence during the tuning process. | 03-31-2011 |
20110074393 | TEMPERATURE COMPENSATED FIBER OPTIC CURRENT OR MAGNETIC FIELD SENSOR WITH INSENSITIVITY TO VARIATIONS IN SENSOR PARAMETERS - A fiber optic current or magnetic field sensor uses a sensing fiber in a coil for measuring a current or a magnetic field and has a retarder for converting between linearly polarized light and elliptically polarized light. The retardation of the retarder; its temperature dependence as well as its azimuth angle in respect to the plane of the fiber coil are optimized in dependence of the birefringence in the sensing fiber in order to minimize the influence of temperature variations and manufacturing tolerances on the overall scale factor of the sensor. | 03-31-2011 |
20110122654 | HIGH VOLTAGE AC/DC OR DC/AC CONVERTER STATION WITH FIBER-OPTIC CURRENT SENSOR - DC current in a high voltage AC/DC or DC/AC converter station can be measured via the Faraday effect in one or more loops of an optical sensing fiber located at the base of a bushing extending through a wall of the hall. This arrangement can exploit the base of the bushing being at ground potential, which can simplify mounting work and maintenance. | 05-26-2011 |
20110128655 | GENERATOR CIRCUIT BREAKER WITH FIBER-OPTIC CURRENT SENSOR - The current in a generator circuit breaker is measured using the Faraday effect of an optical sensing fiber looped around the breaker's conductor. The sensing fiber is arranged in a sensing strip, which can be mounted to the enclosure of the generator circuit breaker or to the conductor. Exemplary embodiments can have a wide measuring range and can easily be fitted to new or existing generator circuit breakers. | 06-02-2011 |
20120283969 | FIBER-OPTIC CURRENT SENSING USING A SENSOR WITH EXCHANGEABLE SUB-MODULES - A fiber-optic current sensor includes a measuring unit having a light source and a light detector, and a sensing head having a sensing fiber wound around a conductor and a retarder connected to the sensing fiber. The scale factor as a function of current of the fiber-optic current sensor is described by the product of two scaling functions fe′ and fs′ for the measuring unit and the sensing head, respectively. The data describing the scaling functions fe′, fs′ is stored in a memory of the measuring unit, while the data describing the scaling function fs′ is also stored in a memory of the sensing head. Providing two such memory devices allows to store the scaling functions fe′ and fs′ separately, thereby turning the control unit as well as the sensor head into easily replaceable modules. | 11-08-2012 |
20150115934 | Temperature Compensated Fiber-Optic Current Sensor - In a fiber-optic current sensor, a 22.5° Faraday rotator, which is part of the sensing fiber coil, determines the working point of the sensor. The coil is operated with substantially linearly polarized light or incoherent substantially left and right circularly polarized light waves. In one arrangement, a polarization beam splitter generates two optical signals that vary in anti-phase with changing current. A signal processor determines the current from the two anti-phase signals. Appropriately detuned and oriented fiber-optic half-wave or quarter-wave retarders before the fiber coil are used to reduce or cancel the adverse effects of temperature and bend-induced birefringence on the measurement signal. Moreover, the temperature may be derived from the difference in the bias of the anti-phase signals and may be used to cancel temperature effects in the signal processor. | 04-30-2015 |
Patent application number | Description | Published |
20120164735 | Sample Distribution - A method is described for distributing samples within an automated analyzer from a linear arrangement of sample vessels to a processing plate in a two-dimensional n×m arrangement wherein samples are sorted, followed by transfer with a pipetting device with a linear arrangement to a processing vessel in a two-dimensional n×m arrangement and subsequent processing of samples using a second pipetting device which has a two-dimensional n×m arrangement. | 06-28-2012 |
20120294762 | Temporary Store - An analyzer for detecting or quantitating an analyte comprising a temporary storage unit for storing a reagent cassette and a method for presenting a reagent cassette present in a temporary storage unit to a pipetting device are described. | 11-22-2012 |
20120294766 | Reagent Store - An automated analyzer with an on-board fridge for long-term cooling of reagents, and a method for isolating and analyzing an analyte comprising long-term cooling of reagents. | 11-22-2012 |
20130157273 | Method for Nucleic Acid Testing - A Method for nucleic acid analysis involving the steps of receiving sample tubes which contain samples, receiving a test request for each sample (the test request specifying one or more assays to be conducted for said sample), obtaining one or more sample aliquots of each sample depending on if one or more assays are to be conducted, assigning each of the sample aliquots to one or more test classes according to the assay which is to be conducted for that sample aliquot and combining sample aliquots belonging to the same test class into the same batch, while the batch includes samples for which a first and samples for which a second assay is to be conducted. | 06-20-2013 |
20140180601 | ANALYSIS SYSTEM FOR ANALYZING BIOLOGICAL SAMPLES WITH MULTIPLE OPERATING ENVIRONMENTS - An analysis system for biological samples is disclosed that includes at least one analyzer with an analytical unit for analyzing the biological samples and an analyzer controller. The analysis system further includes an analyzer data management system (ADMS) operable for receiving a selection of an operating environment chosen from multiple operating environments. In some embodiments, an analytical system is provided which offers a switch between sample testing and software validation on the same hardware, thereby offering efficiency and flexibility. For example, if sample testing is typically restricted to a particular time of the day (e.g., blood banks often get their samples in the evening and conduct the sample testing at night), the daytime hours can be used to validate new software. In such a case, additional instruments for software validation are not required and expensive idle times of analytical systems are reduced. | 06-26-2014 |
20140370609 | ANALYSIS SYSTEM FOR A BIOLOGICAL SAMPLE - The invention provides for an analysis system ( | 12-18-2014 |
20150037896 | Sample Distribution - A method is described for distributing samples within an automated analyzer from a linear arrangement of sample vessels to a processing plate in a two-dimensional n×m arrangement wherein samples are sorted, followed by transfer with a pipetting device with a linear arrangement to a processing vessel in a two-dimensional n×m arrangement and subsequent processing of samples using a second pipetting device which has a two-dimensional n×m arrangement. | 02-05-2015 |
20150050185 | Sample Distribution - A method is described for distributing samples within an automated analyzer from a linear arrangement of sample vessels to a processing plate in a two-dimensional n×m arrangement wherein samples are sorted, followed by transfer with a pipetting device with a linear arrangement to a processing vessel in a two-dimensional n×m arrangement and subsequent processing of samples using a second pipetting device which has a two-dimensional n×m arrangement. | 02-19-2015 |
20150266679 | REAGENT STORE - An automated analyzer with an on-board fridge for long-term cooling of reagents, and a method for isolating and analyzing an analyte comprising long-term cooling of reagents. | 09-24-2015 |
20150268260 | REAGENT STORE - An automated analyzer with an on-board fridge for long-term cooling of reagents, and a method for isolating and analyzing an analyte comprising long-term cooling of reagents. | 09-24-2015 |