Device for detecting a risk of misting of a motor-vehicle window, and installation including such a device
AssigneeValeo Electronique
InventorsBernard Remond, Michel Schwob, Atallah Benalia
Life of this patent
Estimating the term…
Abstract
Measurements are taken and associated with chosen models giving access to an average temperature (on the surface) of the window, for instance the windscreen, and to a dew temperature of the air in the passenger compartment of the vehicle. A comparison between the two temperatures represents a risk of misting of the window.
Claims20
A device for detecting a risk of misting being present on a motor-vehicle window, the said window being interposed between the outside and the passenger compartment of the vehicle, the device comprising:
- at least a first and a second input for receiving at least first and second information, relating respectively to a temperature of the window and to a dew temperature in the passenger compartment of the vehicle,
- a calculating module suitable for:
- a) estimating a temperature of the window from at least the first information,
- b) estimating a dew temperature in the passenger compartment of the vehicle from at least the second information, and
- c) estimating a comparison between the temperature of the window and the dew temperature in order to deduce therefrom a risk of misting being present on the window,
- as well as an output suitable for delivering a signal relating to a risk of misting being present.
An installation for heating, ventilating and/or air conditioning the passenger compartment of a motor vehicle, the installation comprising a module for control of at least one item of equipment of the installation, configured to work with a device for detecting a risk of misting being present on a motor-vehicle window, the said window being interposed between the outside and the passenger compartment of the vehicle, the device comprising:
- at least a first and a second input for receiving at least first and second information, relating respectively to a temperature of the window and to a dew temperature in the passenger compartment of the vehicle,
- a calculating module suitable for:
- a) estimating a temperature of the window from at least the first information,
- b) estimating a dew temperature in the passenger compartment of the vehicle from at least the second information, and
- c) estimating a comparison between the temperature of the window and the dew temperature in order to deduce therefrom a risk of misting being present on the window,
- as well as an output suitable for delivering a signal relating to a risk of misting being present.
Dependencies are inferred from the claim text.