公开(公告)号：US20180164236A1

公开(公告)日：2018-06-14

申请号：US15576840

申请日：2016-05-25

Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

Inventor： Jifang TAO ,  Alex Yuan-dong GU ,  Hong CAI ,  Junfeng SONG

IPC: G01N25/68 ,  G01N21/27 ,  G01N21/63

CPC classification number: G01N25/68 ,  G01N21/27 ,  G01N21/41 ,  G01N21/63 ,  G01N2021/435 ,  G01N2021/7776 ,  G01N2021/7779

Abstract: According to various embodiments, there is provided a sensor arrangement including a filter configured to provide an output signal having an output wavelength, the output wavelength having a dependence on a temperature of the filter; a temperature module configured to change the temperature of the filter; a controller circuit configured to control the temperature module for changing the temperature of the filter until the output wavelength increases with decreasing temperature; and a determination circuit configured to determine a dew point of an environment surrounding the sensor arrangement, based on a minimum value of the output wavelength and the dependence.