A method for detecting blockage of a radar sensor (105) by processing a radar signal (115, 116, 117) received by the radar sensor (105). The method includes obtaining (S1) the radar signal (115, 116, 117), determining (S2) a range-Doppler representation (300) of the radar signal such that received radar signal energy (311) is represented as a function of distance (d0-d13) and relative velocity (v0-v7), determining (S4) predetermined azimuth angles (θ.sub.1, θ.sub.2, θ.sub.3) for the radar sensor (105) and calculating (S31) a relative velocity (v0, v3, v5) for each predetermined azimuth angle (θ.sub.1, θ.sub.2, θ.sub.3). The method further includes obtaining (S5) a first distribution (301) and at least one other distribution (302, 303) of received energy (311) over distance in the range-Doppler representation (300) for a first azimuth angle (θ.sub.1) and at least one other azimuth angle (θ.sub.2, θ.sub.3), generating (S7) a measure of similarity for the distributions, and detecting (S8) blockage of the radar sensor (105) if the measure of similarity satisfies a similarity criterion.

This technology relates to a system for clearing a sensor cover. The system may be comprised of a first sensor that rotates within a sensor cover, a plurality of second sensors that are fixed relative to the sensor cover, a first wiper that is configured to clear the sensor cover of debris, and a motor. The motor may rotate the first wiper in a first direction at a first predetermined rotation rate defined at least in part by a second predetermined rotation rate of the first sensor.

A sensor apparatus includes a sensor window; a first nozzle adjacent to the sensor window and oriented to blow across the sensor window, the first nozzle positioned below the sensor window and in a first horizontal direction away from the sensor window, the first nozzle being slot-shaped with a first length and a first thickness; and a second nozzle adjacent to the first nozzle and oriented to blow across the sensor window, the second nozzle positioned below the sensor window and in the first horizontal direction away from the sensor window, the second nozzle being slot-shaped with a second length and a second thickness. The second nozzle is farther from the sensor window in the first horizontal direction than the first nozzle, and the first length of the first nozzle is greater than the second length of the second nozzle.

A roof module for forming a vehicle roof having a panel component whose external surface at least partially forms a roof skin of the vehicle roof, the roof skin functioning as an outer sealing surface of the roof module, the roof module having at least one module component, the roof module having a drive kinematic unit which is configured to displace the at least one module component from a retracted position to an extended position in which the at least one module component protrudes over the roof skin, and the roof module having at least one cleaning nozzle. The drive kinematic unit may be configured to also displace the at least one cleaning nozzle between a retracted position and an extended position.

An electromagnetic wave transmission cover includes: a design portion disposed on a front side of a vehicular electromagnetic wave device and exposed to an outside of a passenger compartment of a vehicle; a housing integrated with the design portion and disposed on a back side of the design portion; and a heating element provided integrally with the design portion. The housing is lower in thermal conductivity than the design portion.

The disclosure provides for a wiper system for cleaning a surface of a sensor housing, such as a sensor housing positioned on top of a vehicle. The wiper system includes a plurality of windows spaced around a sensor housing, and a plurality of wipers positioned around the sensor housing, each of the wipers includes a wiper blade configured to clean a corresponding window of the plurality of windows. The wiper system further includes a drive system including a moveable part coupled to a motor. The motor is configured to drive the drive system to simultaneously rotate the plurality of wipers around the sensor housing such that the plurality of wipers remove debris from the plurality of windows.

A sensor assembly for a vehicle includes a base, a sensor body mounted to the base and rotatable relative to the base around an axis in a direction of rotation, and a cover. The sensor body includes a sensor window and a wall having heat fins elongated circumferentially relative to the axis. The cover is positioned to cover the heat fins. The cover includes an inlet open in the direction of rotation. The cover defines an airflow path from the inlet through the heat fins. The cover includes an outlet positioned to direct air across the sensor window.

A sensor lens assembly includes a cylindrical sensor body including a lower surface, a sensor lens surface, and a side surface extending between the lower surface and an outer edge of the sensor lens surface, a sensor enclosed within the cylindrical sensor body and adjacent to the sensor lens surface, and a nozzle configured to deliver a fluid near a center point of the sensor lens surface. The sensor lens surface is concave and rotates relative to the side surface of the cylindrical sensor body such that centrifugal force causes the fluid to form a film on the sensor lens surface that acts as a barrier, cushion, and particle collecting medium on the sensor lens surface.

Aspects of the disclosure relate to systems for cleaning a sensor. For example, the sensor may include a housing as well as internal sensor components housed within the housing. The housing may include a sensor input surface through which signals may pass. The system may also include a motor configured to rotate the internal sensor components relative to a mount as well as the mount to which the motor is fixed. The system may also include a wiper including a wiper blade. The wiper may be attached to the mount such that rotating the housing causes the wiper to contact the sensor input surface in order to clean the sensor.

The invention relates to a device (120) for cleaning a large-optical-surface detection module (110) of a driving assistance system (100) of a motor vehicle (300), comprising at least two rails (121a, 121b, 121c) for spraying a cleaning fluid that are arranged around the large-optical-surface detection module (110), each spray rail (121a, 121b, 121c) being configured to clean a part of the optical surface of the detection module, each spray rail being able to be activated independently of the other spray rails (121a, 121b, 121c).