Patents by Inventor Henrik Rodjegard
Henrik Rodjegard 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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Publication number: 20240051370Abstract: The present invention relates to a system and method for monitoring and controlling air quality in a vehicle compartment. In particular the invention relates to a sensor unit determining at least two different substances present in the air of the vehicle compartment wherein the settings of a heat, ventilation and air conditioning system (HVAC-system) of the vehicle are controlled and optimized using at least one of the determined substances.Type: ApplicationFiled: December 22, 2021Publication date: February 15, 2024Inventors: Jonas LJUNGBLAD, Bertil HÖK, Henrik RÖDJEGÅRD
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Patent number: 11828702Abstract: A method and a device for determining a concentration of a component in a fluid is described. The method comprises the steps of providing from a first optical sensor (1) a first light intensity (IR1A) for light which has interacted with the fluid at a first point in time (A), and a second light intensity (IR1B) for light which has interacted with the fluid at a second point in time (B), wherein the first light intensity (IR1A) is different from the second light intensity (IR1B), and providing from a second optical sensor (2) a third light intensity (IR2A) for light which has interacted with the fluid at the first point in time (A), and a fourth light intensity (IR2B) for light which has interacted with the fluid at the second point in time (B).Type: GrantFiled: November 16, 2021Date of Patent: November 28, 2023Assignee: Senseair ABInventor: Henrik Rödjegård
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Publication number: 20230304924Abstract: A method and a device for determining a concentration of a component in a fluid is described. The method comprises the steps of providing from a first optical sensor (1) a first light intensity (IR1A) for light which has interacted with the fluid at a first point in time (A), and a second light intensity (IR1B) for light which has interacted with the fluid at a second point in time (B), wherein the first light intensity (IR1A) is different from the second light intensity (IR1B), and providing from a second optical sensor (2) a third light intensity (IR2A) for light which has interacted with the fluid at the first point in time (A), and a fourth light intensity (IR2B) for light which has interacted with the fluid at the second point in time (B).Type: ApplicationFiled: November 16, 2021Publication date: September 28, 2023Inventor: Henrik RÖDJEGÅRD
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Publication number: 20230236120Abstract: A method for determining a measure of a gas concentration from a group of at least two non- dispersive infrared, NDIR, gas sensors (S1-SN) is described. The method comprises the steps of obtaining, at a processing unit (1), from each NDIR gas sensor (S1-SN) a measure of a gas concentration as a belief function Pi(x), which provides a probability as a function of the sensed light intensity at a specific wavelength, merging, in the processing unit, the belief functions Pi(x) to a merged belief function P(x). A computer program performing the method is also described.Type: ApplicationFiled: August 30, 2021Publication date: July 27, 2023Inventors: Yang YOU, Tobias OECHTERING, Henrik RÖDJEGÅRD
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Patent number: 11686674Abstract: The present invention is directed to a gas detector configured to improve response speed of a gas sensor. A gas detector includes a housing, a gas sensor main body installed in the housing, and a partition wall provided in the housing and limiting the surrounding of the gas sensor main body to separate from the other area. The housing or the partition wall includes an opening portion directly connected from the outside to an area inside the partition wall.Type: GrantFiled: July 27, 2021Date of Patent: June 27, 2023Assignee: Asahi Kasei Microdevices CorporationInventors: Maksym Bryzgalov, Mats Olsson, Henrik Rodjegard, Hans Martin
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Publication number: 20220373526Abstract: A change rate of in-vehicle carbon dioxide concentration at an optional time point when the vehicle is in a parked state is estimated on the basis of detection signals of a CO2 concentration sensor at two different time points when in the parked state; and on the basis of a detection signal of the CO2 concentration sensor at the optional time point, a preset time constant of concentration change of the in-vehicle carbon dioxide concentration, and the estimated change rate, the in-vehicle carbon dioxide concentration at a time point when a predetermined time according to the time constant has elapsed since the optional time point is estimated (steps S4 to S7). A detection target organism is determined to be present in the vehicle when the estimated in-vehicle carbon dioxide concentration is equal to or more than a threshold value set according to the detection target organism (steps S8 and S9).Type: ApplicationFiled: November 5, 2020Publication date: November 24, 2022Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Henrik Rodjegard, Yuji Goda
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Patent number: 11499914Abstract: A multi-channel gas sensor comprising a gas cell (101, 601), a light source (110, 210, 310, 410, 510, 610), a first interference filter (150, 250, 350, 450, 550, 650), a first detection unit (120, 220, 320, 420, 520, 620) and a second detection unit (130, 230, 330, 430, 530, 630). The light source (110, 210, 310, 410, 510, 610) is arranged to emit light radiation into the gas cell (101, 5 601). The first detection unit (120, 220, 320, 420, 520, 620) is arranged to detect light from the light source, that has propagated through at least a part of the gas cell (101, 601), and that has been transmitted through the first interference filter (150, 250, 350, 450, 550, 650).Type: GrantFiled: June 9, 2020Date of Patent: November 15, 2022Assignee: Senseair ABInventors: Hans Martin, Henrik Rödjegård
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Publication number: 20220244241Abstract: The present invention relates to a breath analyzing apparatus and method. In particular the invention relates to a breath analyzing apparatus operating in the 3.3-3.6 ?m wavelength range and arranged to provide absorption information in at least two different wavelength bands in the wavelength range. The absorption information from the wavelength bands are compared with tabulated data of preselected substances to identify an unidentified substance.Type: ApplicationFiled: June 24, 2020Publication date: August 4, 2022Applicant: SENSEAIR ABInventors: Jonas LJUNGBLAD, Bertil HÖK, Hans MARTIN, Henrik RÖDJEGÅRD
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Publication number: 20220205906Abstract: A multi-channel gas sensor comprising a gas cell (101, 601), a light source (110, 210, 310, 410, 510, 610), a first interference filter (150, 250, 350, 450, 550, 650), a first detection unit (120, 220, 320, 420, 520, 620) and a second detection unit (130, 230, 330, 430, 530, 630). The light source (110, 210, 310, 410, 510, 610) is arranged to emit light radiation into the gas cell (101, 5 601). The first detection unit (120, 220, 320, 420, 520, 620) is arranged to detect light from the light source, that has propagated through at least a part of the gas cell (101, 601), and that has been transmitted through the first interference filter (150, 250, 350, 450, 550, 650).Type: ApplicationFiled: June 9, 2020Publication date: June 30, 2022Applicant: Senseair ABInventors: Hans Martin, Henrik Rödjegård
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Publication number: 20220034797Abstract: The present invention is directed to a gas detector configured to improve response speed of a gas sensor. A gas detector includes a housing, a gas sensor main body installed in the housing, and a partition wall provided in the housing and limiting the surrounding of the gas sensor main body to separate from the other area. The housing or the partition wall includes an opening portion directly connected from the outside to an area inside the partition wall.Type: ApplicationFiled: July 27, 2021Publication date: February 3, 2022Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Maksym BRYZGALOV, Mats OLSSON, Henrik RODJEGARD, Hans MARTIN
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Patent number: 9823237Abstract: Systems, apparatus and methods determine the presence of a volatile substance in expired breath. Alcohol concentrations can be determined from expired breath through the use of electromagnetic detection. The systems, apparatus and methods allow measurements of volatile substances to be done accurately and quickly over a wide range of temperatures, and are easily incorporated into vehicles.Type: GrantFiled: April 5, 2016Date of Patent: November 21, 2017Assignee: Automotive Coalition for Traffic Safety, Inc.Inventors: Hans Göran Evald Martin, Henrik Rödjegård, Jan-Åke Henning, Pavel Zyrianov
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Publication number: 20160356764Abstract: Systems, apparatus and methods determine the presence of a volatile substance in expired breath. Alcohol concentrations can be determined from expired breath through the use of electromagnetic detection. The systems, apparatus and methods allow measurements of volatile substances to be done accurately and quickly over a wide range of temperatures, and are easily incorporated into vehicles.Type: ApplicationFiled: April 5, 2016Publication date: December 8, 2016Inventors: Hans Göran Evald Martin, Henrik Rödjegård, Jan-Åke Henning, Pavel Zyrianov
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Patent number: 8298457Abstract: The invention relates to a method of producing a movable lens structure that comprises the steps of: forming a lens from a lens material disposed on a carrier of another material (step 58), and forming a micromechanical structure from the carrier (step 60), wherein the forming of the lens takes place before the forming of the micromechanical structure. With this method a simplified production method is obtained that simplifies difficult compatibility requirements between micromechanics and lens that can otherwise be hard to meet.Type: GrantFiled: November 4, 2003Date of Patent: October 30, 2012Assignee: Imego ABInventors: Gert Andersson, Stefan Bengtsson, Sverker Hård, Anders Larsson, Fredrik Nikolajeff, Henrik Rödjegård, Anna-Lena Hård, legal representative
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Patent number: 7814791Abstract: The present invention is related to sensor arrangements and particularly to sensor arrangements for symmetric response in a x-, y- and z-coordinate system. The arrangement comprises four gyroscopes with one axis arranged into different directions of sensitivity.Type: GrantFiled: September 4, 2007Date of Patent: October 19, 2010Assignee: Imego ABInventors: Gert Andersson, Henrik Rodjegard
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Publication number: 20090013783Abstract: The present invention is related to sensor arrangements and particularly to sensor arrangements for symmetric response in a x-, y- and z-coordinate system. The arrangement comprises four gyroscopes with one axis arranged into different directions of sensitivity.Type: ApplicationFiled: September 4, 2007Publication date: January 15, 2009Inventors: Gert Andersson, Henrik Rodjegard
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Publication number: 20060012849Abstract: The invention relates to a method of producing a movable lens structure that comprises the steps of: forming a lens from a lens material disposed on a carrier of another material (step 58), and forming a micromechanical structure from the carrier (step 60), wherein the forming of the lens takes place before the forming of the micromechanical structure. With this method a simplified production method is obtained that simplifies difficult compatibility requirements between micromechanics and lens that can otherwise be hard to meet.Type: ApplicationFiled: November 4, 2003Publication date: January 19, 2006Applicant: Imego ABInventors: Gert Andersson, Stefan Bengtsson, Sverker Hard, Anders Larsson, Fredrik Nikolajeff, Henrik Rodjegard