INSTALLATION FOR MOISTURE DETECTION FOR MOTOR VEHICLES

• US 20090071234A1
• Filed: 05/17/2006
• Published: 03/19/2009
• Est. Priority Date: 05/19/2005
• Status: Abandoned Application

• Current Assignee: Hella KGaA Hueck & Company
• Original Assignee: Hella KGaA Hueck & Company
• Inventors: Schmidt, Franz-Josef, Blaut, Andreas, Schafer, Heiko
• Application Number:
  US11/915,106
• Publication Number:
  US 20090071234A1
• Time in Patent Office: Days
• US Class Current: 73/73
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B60S 1/0822 characterized by the arrangement or type of detection means
• CPC Class Codes: B60S 1/0829 Oscillator-resonator rain sensor
• CPC Class Codes: B60S 1/0877 at least part of the sensor being positioned between layers of the windshield
• CPC Class Codes: G01N 27/223 for determining moisture content, e.g. humidity rain detectors on vehicle windows B60S1/0825

Abstract

Installation for moisture detection for motor vehicles comprised of an oscillator, a resonant circuit (1) and a measuring and analysis circuit, where the resonant circuit (1) contains an inductance (12) and a capacitance (11) and where the inductance (12) and the capacitance (11) are separate components.

Claims

1. Installation for moisture detection for motor vehicles comprised of an oscillator, a resonant circuit (1) and a measuring and analysis circuit, where the resonant circuit (1) contains an inductance (12) and a capacitance (11), characterized in that the inductance (12) and the capacitance (11) are separate components.

2. Installation of claim 1, characterized by the capacitance (11) being made up of two meandering wires (111, 112) of meshing loops.

3. Installation of claim 2, characterized by the two wires (111, 112) of the capacitance (11) being connected to the inductance (12).

4. Installation of claim 1, characterized by the capacitance (11) being flat and covering an area between 0.5 cm² and 4000 cm².

5. Installation of claim 2, characterized by the wires (111, 112) of the capacitance (11) consisting of a transparent conducting oxide (TCO) like indium tin oxide, for example.

6. Installation of claim 2, characterized by the wires (111, 112) of the capacitance (11) consisting of silver, copper or other conducting materials.

7. Configuration of a vehicle window (3) and an installation for moisture detection as in one of claim 1, characterized by the inductance (12) being installed in a first area of the vehicle window (3) and the capacitance (11) being installed in a second area of the vehicle window (3) with the second area being larger than the first area.

8. Configuration of claim 7, characterized by the second area covering the first area.

9. Configuration of claim 7, characterized by the resonant circuit (1) being installed inside the vehicle window (3).

10. Configuration of claim 9, characterized by the inductance (12) of the resonant circuit (1) being connected to a second inductance located on the outer surface (31) of the vehicle window (3) which second inductance loosely and inductively connects the resonant circuit (1) with the oscillator and measuring and analysis circuit.