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公开(公告)号：US10429329B2
公开(公告)日：2019-10-01
申请号：US15010152
申请日：2016-01-29
摘要： We disclose herein a method for testing a batch of environmental sensors to determine the fitness for purpose of the batch of environmental sensors, the method comprising: performing a plurality of electrical test sequences to the sensor inputs of the batch of environmental sensors to measure electrical responses of the sensor outputs of the batch of environmental sensors; correlating the measured electrical responses from the batch of environmental sensors to predetermined environmental parametric ranges of at least one environmental sensor so as to define correlated electrical test limits; and determining the fitness for purpose of the batch of environmental sensors if the measured electrical responses are within the correlated electrical test limits.
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公开(公告)号：US10288575B2
公开(公告)日：2019-05-14
申请号：US15168547
申请日：2016-05-31
摘要： We disclose herein an environmental sensor system comprising an environmental sensor comprising a first heater and a second heater in which the first heater is configured to consume a lower power compared to the second heater. The system also comprises a controller coupled with the environmental sensor. The controller is configured to detect if a measured value of a targeted environmental parameter is present. The controller is configured to switch on at least one of the first and second heaters based on the presence and/or result of the measured value of the targeted environmental parameter.
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公开(公告)号：US11789054B2
公开(公告)日：2023-10-17
申请号：US16977313
申请日：2019-03-12
IPC分类号： G01R27/14 , H03K17/687 , H03M3/00
CPC分类号： G01R27/14 , H03K17/6871 , H03M3/30
摘要： A circuit for measuring an unknown resistance of a resistive element comprises a sensor circuit to generate a differential voltage dependent on the resistance of the resistive element and a reference circuit to generate a differential reference voltage and a sigma-delta converter comprising a first stage, wherein a first capacitor is selectively coupled to one of the output terminals of the sensor circuit and a second capacitor is coupled to one of the output terminals of the reference circuit. The circuit generates logarithmically compressed values.
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公开(公告)号：US10914636B2
公开(公告)日：2021-02-09
申请号：US15923670
申请日：2018-03-16
发明人： Syed Zeeshan Ali , Kaspars Ledins
摘要： We disclose herein a method for testing and/or calibrating a thermopile based device. The method comprising: applying an electrical bias of a first polarity to the thermopile based device and measuring a first value of an electrical parameter; and applying an electrical bias of a second polarity to the thermopile based device and measuring a second value of an electrical parameter.
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公开(公告)号：US09909926B2
公开(公告)日：2018-03-06
申请号：US15168562
申请日：2016-05-31
发明人： Richard Henry Hopper , Andrea De Luca , Kaspars Ledins , Syed Zeeshan Ali , Mohamed Foysol Chowdhury
IPC分类号： G01J5/14 , G01N21/61 , G01N33/00 , B01L3/00 , G01N21/552 , H01L31/16 , H01L31/0232 , H01L31/02 , H01L35/32 , H01L37/00 , H01L31/167 , H01L31/0203 , H01L31/18
CPC分类号： G01J5/14 , B01L3/502707 , B01L3/502715 , B01L3/50273 , B01L2200/12 , B01L2300/0654 , B01L2300/08 , B01L2300/0858 , B01L2300/0887 , B01L2300/168 , B01L2400/0424 , G01J5/0853 , G01N21/0303 , G01N21/3504 , G01N21/552 , G01N21/61 , G01N33/004 , G01N2201/068 , H01L31/02002 , H01L31/0203 , H01L31/02325 , H01L31/16 , H01L31/167 , H01L31/18 , H01L35/32 , H01L37/00
摘要： We disclose a chemical sensing device for detecting a fluid. The sensing device comprises: at least one substrate region comprising at least one etched portion; a dielectric region formed on the at least one substrate region, the dielectric region comprising at least one dielectric membrane region adjacent to the at least one etched portion; an optical source for emitting an infra-red (IR) signal; an optical detector for detecting the IR signal emitted from the optical source; one or more further substrates formed on or under the dielectric region, said one or more further substrates defining an optical path for the IR signal to propagate from the optical source to the optical detector. At least one of the optical source and optical detector is formed in or on the dielectric membrane region.
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