Sensor device for detecting moisture on a roadway having at least one structure-borne sound sensor

A sensor device for detecting moisture on a roadway of a vehicle, comprising:

• a housing having at least one flat housing area, the housing being constructed as a resonant body and the housing being provided for mounting in a wheel arch of the vehicle;
• at least one circuit carrier arranged in the housing;
• at least one structure-borne sound sensor arranged in the housing area of the housing and connected in a signal-conducting matter to the circuit carrier;
• and
• at least one connecting means assigned to the housing for producing a connection between the housing and the wheel arch, the at least one connecting means being constructed to be vibration damping, at least in certain sections, and constructed for receiving a decoupling of the sensor device and the wheel arch,
• wherein the circuit carrier is connected to the housing in a vibration-damped manner,
• wherein the housing has a lateral protrusion extending outward from a top surface of the housing, and
• wherein the at least one connecting means is a double-sided adhesive tape having a first side directly adhered to the lateral protrusion and a second side directly adhered to the wheel arch.

A sensor device for detecting moisture on a roadway of a vehicle, comprising:

• a housing having at least one flat housing area, the housing being constructed as a resonant body and the housing being provided for mounting in a wheel arch of the vehicle;
• at least one circuit carrier arranged in the housing;
• at least one structure-borne sound sensor arranged in the housing area of the housing and connected in a signal-conducting matter to the circuit carrier;
• and
• at least one connecting means assigned to the housing for producing a connection between the housing and the wheel arch, the at least one connecting means being constructed to be vibration damping, at least in certain sections, and constructed for receiving a decoupling of the sensor device and the wheel arch
• wherein the circuit carrier is connected to the housing in a vibration-damped manner, wherein the at least one connecting means is constructed for producing a connection between the housing and the wheel arch,
• wherein the housing has a lateral protrusion extending outward from a top surface of the housing, and
• wherein the at least one connecting means is a double-sided adhesive tape having a first side directly adhered to the lateral protrusion and a second side directly adhered to the wheel arch.

A sensor device for detecting moisture on a roadway of a vehicle, comprising:

• a housing having at least one flat housing area, the housing being constructed as a resonant body and the housing being provided for mounting in a wheel arch of the vehicle;
• at least one structure-borne sound sensor arranged in the housing area of the housing and;
• at least one connecting means assigned to the housing for producing a connection between the housing and the wheel arch, the at least one connecting means being constructed to be vibration damping, at least in certain sections, and constructed for receiving a decoupling of the sensor device and the wheel arch,
• wherein the at least one connecting means is constructed for producing a connection between the housing and the wheel arch,
• wherein the structure-borne sound sensor is configured to detect only structure-borne sound signals caused by impacting moisture droplets on the housing.

Method for detecting moisture on a roadway of a vehicle, using a sensor device comprising:

• a housing having at least one flat housing area, the housing being constructed as a resonant body and the housing being provided for mounting in a wheel arch of the vehicle;
• at least one structure-borne sound sensor arranged in the housing area of the housing and;
• at least one connecting means assigned to the housing for producing a connection between the housing and the wheel arch, the at least one connecting means being constructed to be vibration damping, at least in certain sections, and constructed for receiving a decoupling of the sensor device and the wheel arch,
• wherein the at least one connecting means is constructed for producing a connection between the housing and the wheel arch,
• measuring structure-borne sound signals caused by impacting moisture droplets thrown up from the roadway only on the housing,
• analyzing the structure-borne sound signals caused only on the housing,
• drawing conclusion about the moisture on the roadway from the analyzed structure-borne sound signals caused only on the housing.