VEONEER US, INC.

RADAR sensor assemblies/modules, particularly those for vehicles. In some embodiments, the assembly may comprise a waveguide comprising a waveguide groove defined by opposing waveguide groove structures. An antenna structure may be operably coupled with the waveguide. A printed circuit board may be operably coupled with the waveguide and may comprise an electrically conductive top layer, an electrically conductive bottom layer, and a substrate positioned in between the electrically conductive top layer and the electrically conductive bottom layer. The electrically conductive top layer may comprise an opening exposing the substrate, which opening may extend along the waveguide groove in between the opposing waveguide groove structures. This configuration may allow for various parameters of the printed circuit board to be modified to tune a performance of a sensor/antenna.

An apparatus comprising a memory and a processor. The memory may comprise first parameters for an image sensor and second parameters for a LED. The processor may be configured to receive a first temperature from the image sensor, receive a second temperature from the LED, present a first adjustment to the image sensor and present a second adjustment to the LED. The first adjustment may be configured to scale the first parameters based on a difference between the first temperature and the predetermined temperature. The second adjustment may be configured to scale the second parameters based on a difference between the second temperature and the predetermined temperature. The processor may scale the first parameters and the second parameters in order to compensate for performance degradation of the image sensor caused by changes in the first temperature and the LED caused by changes in the second temperature.

A method for detecting seatbelt positioning comprises: capturing, by a camera, a source image including a plurality of pixels each having a corresponding brightness level; determining a range of brightness levels of a group of the plurality of pixels located within at least one region of the source image; generating an adjusted image by adjusting the corresponding brightness levels of the group of the pixels located within the region of the source image based on the range of the brightness levels of the group of the plurality of pixels located within the at least one region of the source image; converting the adjusted image to a black-and-white image; and scanning across the black-and-white image to detect a plurality of transitions between black and white segments corresponding to a predetermined pattern of the seatbelt, and using detections of the plurality of transitions to indicate a detection of the seatbelt.

A method for detecting a position of a seatbelt in a vehicle includes: capturing, by a camera, a source image of an occupant in the vehicle; determining a pose of the occupant based on the source image; determining an occupant shadow based on the pose of the occupant; determining, based on the occupant shadow, a shadow overlying a region of interest (ROI) in the source image; and detecting, based on the shadow overlying the ROI, the seatbelt within the ROI. A system for detecting a position of a seatbelt is also provided. The system includes a camera and controller in communication with the camera and configured to: determine a pose of the occupant; determine an occupant shadow based on the pose of the occupant; determine, based on the occupant shadow, a shadow overlying the ROI; and detect, based on the shadow overlying the ROI, the seatbelt within the ROI.

A method for detecting an object having a known pattern with a boundary of a shadow overlying the known pattern includes: capturing, by a camera, a source image of the object; detecting a plurality of transitions between dark and bright regions of the source image and corresponding to the known pattern; determining an expected transition within the source image based on the known pattern and the detected transitions; determining an absence of the expected transition due to the boundary of the shadow overlying the known pattern; and determining a location in the source image corresponding to the expected transition based on a rate of change of brightness in the source image. A system including a camera and a controller configured to detect an object having a known pattern with a boundary of a shadow overlying the known pattern is also provided.

A system and method for detecting seatbelt positioning includes capturing, by a camera, a near infrared source image of an occupant in a vehicle, determining a position of a head of the occupant in the source image, determining a region of interest for a seatbelt based on the position of the head; determining an oversaturation condition in the region of interest for the seatbelt, adjusting the source image to form an adjusted image compensating the oversaturation condition in the region of interest for the seatbelt, converting the adjusted image to a black-and-white image, and detecting the seatbelt within the black-and-white image. Adjusting the source image to compensate the oversaturation condition may include adjusting an exposure level of the source image based on a contrast ratio in the region of interest and/or based on detecting a predetermined pattern of the seatbelt within the region of interest for the seatbelt.

Waveguide and/or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, an antenna module for a vehicle sensor may comprise a receive (RX) array of elongated RX antenna slots and a transmit (TX) array of TX antenna slots. The TX array may comprise both one or more vertically-shifted TX antenna slots and one or more high-gain and/or squinted TX antenna arrays, each comprising a plurality of high-gain antenna slots.

A system includes: a first camera configured to capture first images of a driver on a driver's seat within a passenger cabin of the vehicle; a second camera configured to capture second images in front of the vehicle; a driver module configured to determine a driver and a present rank of the driver; a module configured to detect a condition based on at least one of (a) a first image, (b) a second image, and (c) a parameter measured by a sensor; a reinforcement module configured to: display the present rank within the passenger cabin; generate an output within the passenger cabin in response to the detection of the condition; when no conditions are detected, increment a rank period of the driver; selectively increase the present rank of the driver; and generate an alert within the passenger cabin in response to the increasing of the present rank.

Waveguide and/or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, the assembly may comprise a waveguide block comprising a first surface on a first side of the waveguide block and a second surface on a second side of the waveguide block opposite the first side. One or more waveguides may be formed in the waveguide block. One or more antenna slots may be operably coupled with one or more of the waveguides. One or more auxiliary grooves may be positioned adjacent to at least one of the antenna slots and may mimic, or at least substantially mimic, at least one of the one or more antenna slots, such as in length and/or width.

An optical sensor assembly is provided. The optical sensor includes a sensor and a lens assembly. The sensor may be configured to sense a light signal. The lens assembly may be configured to direct the light signal onto the sensor. The lens assembly may include a lens formed of a plastic material such that a thermal variation is introduced into a focal length of the lens based on temperature. The lens includes a thermal compensation spacer configured to induce a thermal correction in an opposite direction of the thermal variation to correct the focal length of the lens.