Device for detecting a parameter associated with the state of a vehicle, especially an automobile
First Claim
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1. A device for detecting a parameter representative of a state associated with a glazing of a motor vehicle including a module (20), comprising:
- means (E1, E2) for emitting at least one electromagnetic beam (F1) towards one face (AV) of the glazing, wherein said means for emitting are disposed within said glazing;
means (R) for receiving at least a part of the beam returned by said face; and
at least one insert (I1, I2) at least partly implanted into a thickness (e) of the glazing, provided with a surface (S1, S2;
S11) facing said face (AV, AR), said surface formed of a material that substantially reflects the beam (F1), in such a way that the beam, from emission to reception, undergoes a plurality of reflections in the thickness of the glazing, between the surface (S1, S2;
S11) of the insert (I1) and the face (AV, AR) of the glazing, wherein said beam follows a path from said means for emitting to said one face of the glazing without passing through said insert, wherein the receiving means include at least one sensor for detecting said part of the beam returned by said face, and implanted into the thickness of the glazing, and wherein the emitting means are configured to emit a first electromagnetic beam intended to be at least partly returned by a front face of the glazing, as well as a second beam intended to be at least partly returned by a rear face of the glazing, with a view to detecting foreign substances on the front and/or rear faces of the glazing and the module includes at least one insert in the thickness of the glazing, equipped with a first reflecting surface facing the front face, and with a second reflecting surface facing the rear face, while the receiving means are configured to receive at least parts of the first and second beams, which are reflected respectively by the front and rear faces.
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Abstract
The invention relates to the detection of parameters that are representative of a state associated with an automobile windscreen (1), by optical means. The inventive device comprises a module (20) that is sensitive to at least one of the aforementioned parameters and which is at least partially embedded in a layer (11) of the windscreen. Said windscreen comprises two glass panels (10a, 10b), which are separated by a spacer comprising the part of the module (20) that is embedded.
23 Citations
32 Claims
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1. A device for detecting a parameter representative of a state associated with a glazing of a motor vehicle including a module (20), comprising:
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means (E1, E2) for emitting at least one electromagnetic beam (F1) towards one face (AV) of the glazing, wherein said means for emitting are disposed within said glazing;
means (R) for receiving at least a part of the beam returned by said face; and
at least one insert (I1, I2) at least partly implanted into a thickness (e) of the glazing, provided with a surface (S1, S2;
S11) facing said face (AV, AR), said surface formed of a material that substantially reflects the beam (F1), in such a way that the beam, from emission to reception, undergoes a plurality of reflections in the thickness of the glazing, between the surface (S1, S2;
S11) of the insert (I1) and the face (AV, AR) of the glazing, wherein said beam follows a path from said means for emitting to said one face of the glazing without passing through said insert,wherein the receiving means include at least one sensor for detecting said part of the beam returned by said face, and implanted into the thickness of the glazing, and wherein the emitting means are configured to emit a first electromagnetic beam intended to be at least partly returned by a front face of the glazing, as well as a second beam intended to be at least partly returned by a rear face of the glazing, with a view to detecting foreign substances on the front and/or rear faces of the glazing and the module includes at least one insert in the thickness of the glazing, equipped with a first reflecting surface facing the front face, and with a second reflecting surface facing the rear face, while the receiving means are configured to receive at least parts of the first and second beams, which are reflected respectively by the front and rear faces. - View Dependent Claims (2)
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3. A device for detecting at least one parameter representative of at least one state associated with a glazing of a motor vehicle, the device comprising:
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a first emitting means (E1) for emitting a first, electromagnetic beam (F1) that is reflected by a first face (AV) of the glazing;
a second emitting means (E2) for emitting a second electromagnetic beam (F2) that is reflected by a second face (AR) of the glazing;
receiving means (R) for receiving at least a part of the first electromagnetic beam reflected by the first face and for receiving at least a part of the second electromagnetic beam reflected by the second face;
at least one insert (I1, I2) at least partly implanted into a thickness (e) of the glazing, the at least one insert comprising a first surface (S1;
S11) facing the first face and a second surface (S2;
S11) facing the second face, the first and second surfaces formed of a material that substantially reflects the first and second electromagnetic beams, in such a way that, from emission to reception, the first electromagnetic beam undergoes a first plurality of reflections in the glazing between the first surface of the at least one insert and the first face of the glazing, and the second electromagnetic beam undergoes a second plurality of reflections in the glazing between the second surface of the at least one insert and the second face of the glazing.- View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device for detecting at least one parameter representative of at least one state associated with a glazing of a motor vehicle, the glazing comprising first and second glass panels (10a, 10b) respectively having first and second outer faces (AV, AR) separated by a thickness (e) of the glazing, and a spacer 11 of thickness (e′
- ) interposed between the first and second glass panels, the device comprising;
a first emitting means (E1) for emitting a first electromagnetic beam (F1) that is reflected by the first face (AV) of the glazing;
a second emitting means (E2) for emitting a second electromagnetic beam (F2) that is reflected by the second face (AR) of the glazing;
receiving means (R) for receiving at least a part of the first electromagnetic beam reflected by the first face and for receiving at least a part of the second electromagnetic beam reflected by the second face (AR);
at least one insert (I1, I2) at least partly implanted into a thickness e of the glazing, the at least one insert comprising a first surface (S1;
S11) substantially opposite the first face and a second surface (S2;
S11) substantially opposite said second face, said first and second surfaces formed of a material that substantially reflects the first and second electromagnetic beams, in such a way that, from emission to reception, the first electromagnetic beam undergoes a first plurality of reflections in the glazing between the first surface of the at least one insert and the first face of the glazing, and the second electromagnetic beam undergoes a second plurality of reflections in the glazing between the second surface of the at least one insert and the second face of the glazing.- View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
- ) interposed between the first and second glass panels, the device comprising;
Specification