Ir-sensor, particularly a co2 sensor

G - Physics – 01 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 21/35 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2569164

The invention relates to an IR-sensor (1), particularly a CO2 sensor, comprising a filter arrangement (6) behind which a detector arrangement (7) is placed, and comprising an evaluating device (8) that is connected to said detector arrangement (7). The filter arrangement (6) has a first filter (9) and a second filter (10), which are configured as bandpass filters, each have a pass band, and of which the first filter (9) permits the passage of a predetermined IR band while the second filter (10) does not. The detector arrangement has two detectors (14, 15) each assigned to a respective filter (9, 10). The aim of the invention is to simplify an IR-sensor of the aforementioned type. To this end, the pass band of one filter (10) is located inside the pass band of the other filter (9), and the evaluating device (8) subtracts the signals (S1, S2) of the detectors (14, 15) and adapts the difference to the signal (S1) of a detector (14).

La présente invention concerne un détecteur IR (1), en particulier un détecteur de CO<SB>2</SB>, comprenant un dispositif de filtrage (6) en aval duquel se trouve un dispositif de détection (7), et un dispositif d'évaluation (8) qui est relié au dispositif de détection (7), le dispositif de filtrage (6) présentant une premier filtre (9) et un second filtre (10) qui se présentent sous la forme de filtres passe-bande et ont une bande passante respective, et parmi lesquels le premier filtre (9) laisse passer une bande IR prédéterminée alors que le second filtre (10) ne la laisse pas passer, et le dispositif de détection présentant deux détecteurs (14, 15) qui sont chacun associés à un filtre respectif (9, 10). La bande passante d'un filtre (10) se trouve à l'intérieur de la bande passante de l'autre filtre (9), et le dispositif d'évaluation (8) forme une différence entre les signaux (S1, S2) des détecteurs (14, 15) et la normalise sur le signal (S1) d'un détecteur (14).

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Ir-sensor, particularly a co2 sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ir-sensor, particularly a co2 sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ir-sensor, particularly a co2 sensor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1549664

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.