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    GAS SENSOR UTILIZING BANDPASS FILTERS TO MEASURE TEMPERATURE OF AN EMITTER
    4.
    发明专利
    GAS SENSOR UTILIZING BANDPASS FILTERS TO MEASURE TEMPERATURE OF AN EMITTER 未知

    公开(公告)号：ZA201108074B

    公开(公告)日：2012-09-26

    申请号：ZA201108074

    申请日：2011-11-03

    Applicant: DANFOSS IXA AS

    Inventor： STOLBERG-ROHR THOMINE ,  JENSEN JENS MOLLER ,  KRISHNA ARUN ,  MUNCH LARS ,  BUCHNER RAINER ,  MOOS HENRIK GEDDE

    IPC: G01J20060101 ,  G01N20060101

    Abstract: The invention relates to a sensor having a filter arrangement, downstream of which there is arranged a detector arrangement, and an evaluating device which is connected to the detector arrangement, the filter arrangement has at least a first filter, the suspect filter, which is configured as a band pass filter allowing the passage of a first predetermined band, the suspect band, at least one second filter, the reference filter(s), which is configured as band pass filters allowing the passage of a second predetermined band(s), the reference band(s), and where the detector arrangement has at least one detector associated with the at least one of the filters. The sensor uses the band pass filters to measure the temperature of an emitting source. The sensor with advantage could be utilized within the IR band, and could advantageously be used to detect CO2.

    IR-sensor, particularly a CO2 sensor
    7.
    发明专利
    IR-sensor, particularly a CO2 sensor 未知

    公开(公告)号：AU2005252746B2

    公开(公告)日：2010-08-05

    申请号：AU2005252746

    申请日：2005-06-10

    Applicant: DANFOSS IXA AS

    Inventor： BENSLIMANE MOHAMED YAHIA ,  JENSEN JENS MOLLER

    IPC: G01N21/31 ,  G01N21/35 ,  G01N33/00

    Abstract: An IR sensor (1), especially a CO2 sensor, is described, having a filter arrangement (6), downstream of which there is arranged a detector arrangement (7), and an evaluating device (8) which is connected to the detector arrangement (7), the filter arrangement (6) having a first filter (9) and a second filter (10), which are configured as bandpass filters and each have a passband and of which the first filter (9) allows passage of a predetermined IR band and the second filter (10) does not, and the detector arrangement having two detectors (14, 15), each of which is associated with a filter (9, 10). The objective is to simplify the use of such an IR sensor. For that purpose, the passband of one filter (10) is arranged within the passband of the other filter (9) and the evaluating device (8) forms the difference of the signals (S1, S2) of the detectors (14, 15) and normalises it to the signal (S1) of a detector (14).

    SENSOR UTILIZING BAND PASS FILTERS
    9.
    发明专利
    SENSOR UTILIZING BAND PASS FILTERS 未知

    公开(公告)号：ZA201108073B

    公开(公告)日：2012-09-26

    申请号：ZA201108073

    申请日：2011-11-03

    Applicant: DANFOSS IXA AS

    Inventor： JENSEN JENS MOLLER ,  KRISHNA ARUN ,  MUNCH LARS ,  BUCHNER RAINER ,  MOOS HENRIK GEDDE ,  STOLBERG-ROHR THOMINE

    IPC: G01J20060101 ,  G01N20060101

    Abstract: The invention relates to a sensor having a filter arrangement, downstream of which there is arranged a detector arrangement, and an evaluating device connected to the detector arrangement. The filter arrangement has at least a first filter, the suspect filter, and at least one second filter, the reference filter(s). The first filter is configured as a band pass filter allowing the passage of a first predetermined band, the suspect band. The at least one second filter is configured as a band pass filter allowing the passage of a second predetermined band(s), the reference band(s). The detector arrangement has at least one detector associated with at least one of the filters. The band passes reference filters are distributed above and below the band pass of the suspect filter. The sensor with advantage could be utilized within the IR band, and could advantageously be used to detect CO2.

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