Detection and correction of window moisture condensation
First Claim
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1. A condensation detection and mitigation apparatus for a window, the apparatus comprising:
- at least one condensation detection sensor configured for detecting a condensation condition; and
a controller configured for conditionally activating a condensation mitigation device for the window based on said detection of the condensation condition,wherein the at least one condensation detection sensor comprises at least one of;
an optical sensor configured for detecting a weakened or failed signal reading for a measurement outside of an instrument enclosure returning through the window, wherein the condensation condition is detected when a number of consecutive weakened or failed signal readings is greater than a threshold value;
ora temperature sensor configured for measuring an impulse response of the window when a short pulse of current is applied to a heating element, wherein the condensation condition is detected based on the measured impulse response of the window.
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Abstract
Condensation mitigation devices and condensation prediction/detection techniques configured to prevent window condensation with reduced power consumption are disclosed. A condensation mitigation device is configured to predict and/or detect a window condensation event. The condensation mitigation device is powered on only during such an event, and the condensation mitigation device is powered off afterwards to conserve power.
23 Citations
25 Claims
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1. A condensation detection and mitigation apparatus for a window, the apparatus comprising:
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at least one condensation detection sensor configured for detecting a condensation condition; and a controller configured for conditionally activating a condensation mitigation device for the window based on said detection of the condensation condition, wherein the at least one condensation detection sensor comprises at least one of; an optical sensor configured for detecting a weakened or failed signal reading for a measurement outside of an instrument enclosure returning through the window, wherein the condensation condition is detected when a number of consecutive weakened or failed signal readings is greater than a threshold value;
ora temperature sensor configured for measuring an impulse response of the window when a short pulse of current is applied to a heating element, wherein the condensation condition is detected based on the measured impulse response of the window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A condensation detection and mitigation method, comprising:
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detecting a condensation condition on a window based on at least one of; detecting a weakened or failed signal reading for a measurement outside of an instrument enclosure returning through the window, wherein the condensation condition is detected when a number of consecutive weakened or failed signal readings is greater than a threshold value;
ormeasuring an impulse response of the window when a short pulse of current is applied to a heating element, wherein the condensation condition is detected based on the measured impulse response of the window; activating a condensation mitigation device for the window based on said detection of the condensation condition; and deactivating the condensation mitigation device for the window based on at least one of; a detection of a deactivation condition; and a lapse of a predetermined period of time since said activation of said condensation mitigation device. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system for performing noncontact open channel fluid flow measurement, comprising:
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a protective housing, the protective housing including a window; an optical device positioned inside the protective housing, the optical device configured for obtaining optical data through the window and performing noncontact open channel fluid flow measurement based on the optical data obtained through the window; at least one condensation detection sensor, the at least one condensation detection sensor configured for detecting a condensation condition; and a controller, the controller configured for conditionally activating a condensation mitigation device for the window based on said detection of the condensation condition. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification