Patents by Inventor Hartmut Damm
Hartmut Damm has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10859422Abstract: The present disclosure relates to a method for determining a remaining operating period of a detector unit for a radiometric, density- or fill-level measuring device. The detector unit includes a photomultiplier. In such method, the control voltage of the photomultiplier is registered over at least one predetermined time period, a time rate of change function is ascertained based on control voltage registered during the predetermined time period, and the remaining operating period until reaching a maximum control voltage is calculated by means of the time rate of change function and a current control voltage, which is present at the current operating time. The method of the present disclosure permits approximation of the remaining operating period of the detector unit and, thus, timely learning of when required maintenance measures, especially aging related replacement of the photomultiplier, must be performed.Type: GrantFiled: October 10, 2017Date of Patent: December 8, 2020Assignee: Endress+Hauser SE+Co. KGInventors: Hartmut Damm, Mingzheng Jiang, Narcisse Michel Nzitchieu Gadeu, Simon Weidenbruch
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Publication number: 20200056923Abstract: The present disclosure relates to a method for determining a remaining operating period of a detector unit for a radiometric, density- or fill-level measuring device. The detector unit includes a photomultiplier. In such method, the control voltage of the photomultiplier is registered over at least one predetermined time period, a time rate of change function is ascertained based on control voltage registered during the predetermined time period, and the remaining operating period until reaching a maximum control voltage is calculated by means of the time rate of change function and a current control voltage, which is present at the current operating time. The method of the present disclosure permits approximation of the remaining operating period of the detector unit and, thus, timely learning of when required maintenance measures, especially aging related replacement of the photomultiplier, must be performed.Type: ApplicationFiled: October 10, 2017Publication date: February 20, 2020Inventors: Hartmut Damm, Mingzheng Jiang, Narcisse Michel Nzitchieu Gadeu, Simon Weidenbruch
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Patent number: 10533889Abstract: A method for limit level monitoring with a radiometric limit switch. A detector measures discrete radiation intensities. Statistical distributions of radiation intensities in a state, free of medium, and in a state, covered by medium, are given by two Poisson distributions.Type: GrantFiled: June 20, 2011Date of Patent: January 14, 2020Assignee: ENDRESS+HAUSER SE+CO.KGInventors: Simon Weidenbruch, Hartmut Damm, Mingzheng Jiang, Robert Schäuble
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Patent number: 9158007Abstract: A scintillation detector, especially one for a radiometric measuring device for measuring and/or monitoring a measured variable, especially a fill level of a fill substance located in a container, for covering a predeterminable measuring range as flexibly as possible in shape and length. To this end, the scintillation detector comprises two or more scintillators arranged in series relative to one another for converting thereon falling, radioactive radiation into light flashes, whose light propagates in the respective scintillator toward its ends. Arranged between the scintillators are optical coupling elements, which establish light transmitting connections between adjoining pairs of scintillators. Connected at an end of the series is a photoelectric transducer, which converts light occurring in the series into an electrical signal corresponding to a radiation intensity striking the scintillators.Type: GrantFiled: December 17, 2012Date of Patent: October 13, 2015Assignee: Endress + Hauser GmbH + Co. KGInventors: Hartmut Damm, Simon Weidenbruch
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Publication number: 20150014547Abstract: A scintillation detector, especially one for a radiometric measuring device for measuring and/or monitoring a measured variable, especially a fill level of a fill substance located in a container, for covering a predeterminable measuring range as flexibly as possible in shape and length. To this end, the scintillation detector comprises two or more scintillators arranged in series relative to one another for converting thereon falling, radioactive radiation into light flashes, whose light propagates in the respective scintillator toward its ends. Arranged between the scintillators are optical coupling elements, which establish light transmitting connections between adjoining pairs of scintillators. Connected at an end of the series is a photoelectric transducer, which converts light occurring in the series into an electrical signal corresponding to a radiation intensity striking the scintillators.Type: ApplicationFiled: December 17, 2012Publication date: January 15, 2015Inventors: Hartmut Damm, Simon Weidenbruch
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Patent number: 8878136Abstract: A radiometric measuring device comprising: a radioactive radiator which sends radioactive radiation through a container; and a detector serving to receive a radiation intensity penetrating through the container, dependent on the physical, measured variable, and to convert such into an electrical output signal. The detector includes a carrier, on which at least one scintillation fiber is wound, which converts radiometric radiation impinging thereon into light flashes, whose light propagates in the respective scintillation fiber toward its ends. The detector further includes at least one array of avalanche photodiodes operated in a Geiger mode, which convert light impinging thereon into an electrical signal. The detector also has a measuring device electronics connected to the avalanche photodiodes for producing the electrical output signal, based on the electrical signals of the avalanche photodiodes.Type: GrantFiled: April 8, 2010Date of Patent: November 4, 2014Assignee: Endress + Hauser GmbH + Co. KGInventors: Simon Weidenbruch, Hartmut Damm, Robert Schauble
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Publication number: 20130204550Abstract: A method for limit level monitoring with a radiometric limit switch. A detector measures discrete radiation intensities. Statistical distributions of radiation intensities in a state, free of medium, and in a state, covered by medium, are given by two Poisson distributions.Type: ApplicationFiled: June 20, 2011Publication date: August 8, 2013Applicant: Endress + Hauser GmbH + Co. KGInventors: Simon Weidenbruch, Hartmut Damm, Mingzheng Jiang, Robert Schäuble
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Patent number: 8487262Abstract: A radiometric for measuring a physical, measured variable of a fill substance located in a container and for outputting a measurement signal, which corresponds to a measured value of the physical, measured variable. The measuring device has available a single line-pair, via which energy supply of the total measuring device occurs, and via which transmission of the measurement signal occurs.Type: GrantFiled: November 7, 2008Date of Patent: July 16, 2013Assignee: Endress + Hauser GmbH + Co. KGInventors: Hartmut Damm, Jochen Politt, Simon Weidenbruch, Mingzehn Jiang
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Patent number: 8410462Abstract: An optoelectronic apparatus for transmission of an electrical signal via, galvanically isolated by means of a one-piece, translucent, plastic body, an input current circuit. At least one optical transmission element, and an output current circuit, having at least one optical receiving element, wherein the optical transmission element has a principle transmission axis and the optical receiving element a principle receiving axis, which are oriented so as to concide with a shared optical axis.Type: GrantFiled: December 6, 2007Date of Patent: April 2, 2013Assignee: Endress + Hasuer GmbH + Co. KGInventors: Wolfgang Brutschin, Hartmut Damm, Klaus Ruf, Alex Zimmermann
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Publication number: 20120043466Abstract: A radiometric measuring device for measuring a physical, measured variable, especially a fill level or a density, of a fill substance located in a container, and/or for monitoring an exceeding or subceeding of a predetermined limit value for the physical, measured variable, comprising: a radioactive radiator, which, during operation, sends radioactive radiation through the container; and a detector arranged on a side of the container lying opposite the radiator and serving to receive a radiation intensity penetrating through the container, dependent on the physical, measured variable, and to convert such into an electrical output signal. With this measuring device, in an extremely flexibly predeterminable region to be metrologically registered by the detector, a very exact measuring of the radiation intensity can be put into practice.Type: ApplicationFiled: April 8, 2010Publication date: February 23, 2012Applicant: Endress + Hauser GmbH + Co. KGInventors: Simon Weidenbruch, Hartmut Damm, Robert Schauble
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Publication number: 20100252739Abstract: A radiometric for measuring a physical, measured variable of a fill substance located in a container and for outputting a measurement signal, which corresponds to a measured value of the physical, measured variable. The measuring device has available a single line-pair, via which energy supply of the total measuring device occurs, and via which transmission of the measurement signal occurs.Type: ApplicationFiled: November 7, 2008Publication date: October 7, 2010Applicant: Endress + Hauser GmbH + Co. KGInventors: Hartmut Damm, Jochen Politt, Simon Weidenbruch, Mingzehn Jiang
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Publication number: 20100181506Abstract: An optoelectronic apparatus for transmission of an electrical signal via, galvanically isolated by means of a one-piece, translucent, plastic body, an input current circuit. At least one optical transmission element, and an output current circuit, having at least one optical receiving element, wherein the optical transmission element has a principle transmission axis and the optical receiving element a principle receiving axis, which are oriented so as to concide with a shared optical axis.Type: ApplicationFiled: December 6, 2007Publication date: July 22, 2010Applicant: Endress + Hauser GmbH + Co. KGInventors: Wolfgang Brutschin, Hartmut Damm, Klaus Ruf, Alex Zimmermann
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Patent number: 6879425Abstract: The invention relates to a device for determining and/or monitoring the density and/or the level (L) of a filling material in a container. A transmitting unit which emits radioactive radiation and a receiving unit which is arranged in such a way that it receives the radioactive radiation or the secondary radiation that is produced by the interaction of the radioactive radiation with the filling material are provided. A regulating/evaluating unit which determines the density and/or the level of the filling material in the container using the measuring data that is supplied by the receiving unit is also provided. The aim of the invention is to provide a device which enables the level or the density of a filling material in a container to be measured reliably. To this end, the receiving unit consists of individual detector units.Type: GrantFiled: August 23, 2001Date of Patent: April 12, 2005Assignee: Endress + Hauser GmbH + Co. KGInventors: Hartmut Damm, Joachim Neuhaus, Wolfgang Kämereit
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Publication number: 20040025569Abstract: The invention relates to a device for determining and/or monitoring the density and/or the level (L) of a filling material (8) in a container (6). A transmitting unit (2) which emits radioactive radiation and a receiving unit (3) which is arranged in such a way that it receives the radioactive radiation or the secondary radiation that is produced by the interaction of the radioactive radiation with the filling material (8) are provided. A regulating/evaluating unit (13) which determines the density and/or the level of the filling material (8) in the container (6) using the measuring data that is supplied by the receiving unit (3) is also provided. The aim of the invention is to provide a device which enables the level or the density of a filling material in a container to be measured reliably. To this end, the receiving unit (3) consists of individual detector units (4).Type: ApplicationFiled: July 30, 2003Publication date: February 12, 2004Inventors: Hartmut Damm, Joachim Neuhaus, Wolfgang Kamereit
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Patent number: 5991011Abstract: A laser range finding apparatus 10 comprises a pulsed laser 12, a light deflecting device 14, photo-receiver arrangement 16 and a reference object 18 arranged at a defined spacing from the light deflecting device 14. In this respect the reference object 18 has at least one triple element consisting of three mirror surfaces arranged at an angle of 90.degree. to one another.Type: GrantFiled: October 29, 1997Date of Patent: November 23, 1999Assignee: Sick AGInventor: Hartmut Damm
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Patent number: 5748816Abstract: A tube (1) is shown for coupling with, in particular, optical transmitter and/or receiver elements (2), and with means for suppressing interfering radiation, in which the means for suppressing interfering radiation consist of multiply reflecting surfaces (15) which absorb interfering radiation and which are formed by a plurality of ribs (11) which respectively extend substantially along a plane extending through the optical axis of the tube (1).Type: GrantFiled: May 5, 1997Date of Patent: May 5, 1998Assignee: Sick AGInventors: Zeljko Jaksic, Hartmut Damm, Christof Meyer