Abstract: Systems and methods for exterior signage evaluation are disclosed herein. An example method includes receiving images of an exterior signage area of an exterior surface of a first vehicle, the images being obtained by the first vehicle, a second vehicle camera or an infrastructure camera, determining current environmental conditions around the first vehicle, processing the images of the exterior signage area using the current environmental conditions, wherein processing includes comparing an expected appearance of the exterior signage area with an actual appearance of the exterior signage area to determine a visual appearance quality of the exterior signage area, and presenting a message on a display that includes the visual appearance quality.

Abstract: A sensor apparatus includes a cylindrical sensor window defining an axis and an air nozzle positioned at one end of the sensor window and shaped to direct airflow in a direction parallel to the axis across the sensor window. The air nozzle extends circumferentially relative to the axis around the sensor window. The nozzle is formed of an inner edge and an outer edge each extending circumferentially relative to the axis around the sensor window. The inner edge is circular with a radius at least as great as an outer radius of the sensor window. The outer edge includes a first portion with a semicircular shape with a radius smaller than the outer radius of the sensor window and a second portion that extends circumferentially relative to the axis around the sensor window from the first portion to the first portion at a constant radial distance from the inner edge.

Abstract: A sensor apparatus includes a first sensing device, a sensor housing, a bracket, a second sensor, and a channel plate. The sensor housing includes a first sensor window and a top panel, and the first sensing device has a field of view through the first sensor window. The bracket is mounted on top of the top plate. The second sensor is held by the bracket and includes a second sensor window. The channel plate is fixed to the bracket. The bracket includes a first nozzle aimed at the first sensor window and a second nozzle aimed at the second sensor window. The bracket includes a channel fluidly connected to the first nozzle and the second nozzle.

Abstract: A sensor system includes a sensor including a sensor window, a pump, a liquid nozzle aimed at the sensor window, a valve positioned and operable to control fluid flow from the pump to the liquid nozzle, and a computer communicatively coupled to the valve. The computer is programmed to, in response to detecting an obstruction on the sensor window, continuously activate the pump for a first time period; and during the first time period, operate the valve according to a preset sequence. The preset sequence includes opening and then closing the valve at least twice during the first time period.

Abstract: A sensor apparatus includes a base, a nozzle positioned in the base and rotatable relative to the base, an extension arm elongated from a first portion to a second portion, and a fluid source fluidly connected to the nozzle. The first portion is fixed to the nozzle, and the second portion is spaced from the nozzle. Pressurizing the fluid source applies force to the second portion of the extension arm.

Abstract: A sensor system includes a sensor including a sensor window; a nozzle aimed at the sensor window; a supply line to supply fluid to the nozzle; a primary reservoir to supply fluid to the supply line; a first valve actuatable to inject fluid from a first reservoir into the supply line; a second valve actuatable to inject fluid from a second reservoir into the supply line; a third valve actuatable to inject fluid from a third reservoir into the supply line; and a computer communicatively coupled to the sensor and the valves. The computer is programmed to actuate the first valve in response to determining a first condition based on data from the sensor, actuate the second valve in response to determining a second condition based on data from the sensor, and actuate the third valve in response to determining a third condition based on data from the sensor.

Abstract: A sensor apparatus includes a housing attachable to a vehicle and including a panel, a sensor window, a liquid nozzle fixed relative to the housing, and a tunnel. The panel includes a port. The sensor window is positioned in the port. The liquid nozzle is aimed at the sensor window. The liquid nozzle is positioned in a first horizontal direction from the port along the panel. The tunnel extends along the panel and is positioned in a second horizontal direction from the port, the second horizontal direction being opposite the first horizontal direction. The tunnel terminates at an opening positioned to receive fluid outputted by the nozzle.

Abstract: A fluid system includes a one-way check valve including a check-valve inlet and a check-valve outlet; a Y-connector including a Y-connector inlet, a first Y-connector outlet, a second Y-connector outlet, and a pressure-sensor connector; an inlet hose fluidly connecting the check-valve outlet and the Y-connector inlet; and a pressure sensor fluidly connected to the Y-connector via the pressure-sensor connector. The Y-connector inlet, Y-connector outlets, and pressure-sensor connector are fluidly connected to each other inside the Y-connector.

Abstract: A sensor apparatus includes a cylindrical sensor window defining an axis, and a plurality of at least three tubular segments fixed relative to the sensor window. Each tubular segment is elongated circumferentially relative to the axis. The tubular segments collectively form a ring substantially centered around the axis. Each tubular segment includes a plurality of nozzles. Each nozzle includes a first opening and a second opening. Each of the first openings has a direction of discharge in a radially inward and axial direction forming a first angle with the axis, and each of the second openings has a direction of discharge in a radially inward and axial direction forming a second angle with the axis. The second angle is different than the first angle.

Abstract: A sensor apparatus includes a sensor, a heat pipe, and a cover. The sensor includes a sensor housing. The sensor housing includes a sensor window oriented generally vertically and a top surface fixed relative to the sensor window above the sensor window and oriented generally horizontally. The heat pipe is fixed relative to the sensor, wherein the heat pipe is elongated from a first end to a second end, the first end is contacting the top surface, and the second end is spaced from the top surface. The cover covers the top surface and the heat pipe, and the cover is shaped to define a vertical gap between the top surface and the cover.

Abstract: A sensor apparatus includes a sensor, a heat pipe, and a cover. The sensor includes a sensor housing. The sensor housing includes a sensor window oriented generally vertically and a top surface fixed relative to the sensor window above the sensor window and oriented generally horizontally. The heat pipe is fixed relative to the sensor, wherein the heat pipe is elongated from a first end to a second end, the first end is contacting the top surface, and the second end is spaced from the top surface. The cover covers the top surface and the heat pipe, and the cover is shaped to define a vertical gap between the top surface and the cover.

Abstract: An assembly includes a sensor lens, a polymer film adhered to the sensor lens, a hydrophilic coating applied to the sensor lens, and a fluid layer between the sensor lens and the polymer film, wherein the fluid layer is disposed on the hydrophilic coating.

Abstract: A system includes a sensor window, a sensor having a field of view through the sensor window, a piezoelectric vibrator positioned to impart vibrations to the sensor window, and a computer communicatively coupled to the sensor and the piezoelectric vibrator. The computer is programmed to identify a type for an obstruction of the sensor window based on data from the sensor, and instruct the piezoelectric vibrator to vibrate the sensor window with vibrations having a vibration profile. The vibration profile has at least one of frequency or phase velocity chosen according to the identified type of obstruction.

Abstract: A solenoid valve in a manifold is commanded to move to a closed position. Upon activating a pump to supply fluid to the manifold via a supply line, a first pressure is determined in the supply line after commanding the solenoid valve to move to the closed position. Upon deactivating the pump to stop supplying fluid to the manifold, a second pressure is determined in the supply line. Based on a difference between the first pressure and the second pressure, the solenoid valve is determined to be one of (a) at least partially open or (b) in the closed position.

Abstract: A sensor assembly includes a base, a housing mounted to the base and rotatable relative to the base around an axis in a direction of rotation, a sensing apparatus inside the housing and rotatable with the housing, a sensor window fixed relative to the housing, and a duct on an exterior of the housing. The sensing apparatus has a field of view through the sensor window. The duct includes an inlet open toward the direction of rotation and an outlet aimed across the sensor window.

Abstract: An apparatus includes a housing defining a chamber and including a panel including at least one aperture, at least one sensor fixed inside the chamber and having a field of view through a lens and the aperture, at least one annular disc attached to the sensor concentrically around the lens and including a radially outer edge contactlessly exposed to the chamber, and at least three vanes extending from the disc to the panel and arranged radially asymmetrically around the disc.

Abstract: A method to and an apparatus including a processor configured to determine a mass parameter indicative of a mass of an aircraft brake assembly, the mass parameter determined using an estimated amount of energy absorbed by the brake assembly in a given period of time and a corresponding estimated change in temperature of the brake assembly. Also disclosed is a non-transitory computer readable storage medium having stored thereon instructions which when executed by a processor, cause the processor to perform the method.

Abstract: Aspects of the disclosed technology address the problems of manually identifying and optimizing service chain (SC) performance bottlenecks by providing solutions for automatically identifying and tuning various SC parameters. In some aspects, a SC optimization process of the disclosed technology includes the replication or cloning of a SC for which traffic flow is to be optimized. Traffic flows for the production chain can then be simulated over one or more SC clones to identify and tune individual system parameters, for example, to determine if the simulated changes produce a positive, negative, or neutral change in flow performance. Systems and machine-readable media are also provided.

Abstract: A film-application apparatus includes a body including a first body half, a second body half, and a hinge coupling the body halves; and a squeegee blade movable from a first position relative to the body to a second position relative to the body. The second body half is rotatable about the hinge relative to the first body half to a closed position. When the second body half is in the closed position, the body includes a top ring and a bottom ring both centered on an axis and defining an axial gap therebetween. When the second body half is in the closed position and the body is enclosing a sensor having a cylindrical sensor window, the axial gap exposes the cylindrical sensor window, and moving the squeegee blade from the first position to the second position covers substantially an entire surface area of the cylindrical sensor window.