公开(公告)号：US10408775B2

公开(公告)日：2019-09-10

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 ,  G01N21/41 ,  G01N21/27 ,  G01N21/63 ,  G01N21/43 ,  G01N21/77

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.