Vehicle lamp-cleaning system

Abstract

A system includes at least one sensor; a plurality of lamps fixed relative to the sensor; at least one vehicle component attached to the lamps; and a computer communicatively coupled to the lamps, the at least one sensor, and the at least one vehicle component. The computer is programmed to sequentially activate the lamps, determine that an intensity for at least one of the lamps is below a respective intensity threshold based on data from the sensor during the sequential activations of the lamps, and actuate the at least one vehicle component in response to one of the intensities being below the respective intensity threshold.

1 . A system comprising:
 at least one sensor;   a plurality of lamps fixed relative to the sensor;   at least one vehicle component attached to the lamps; and   a computer communicatively coupled to the lamps, the at least one sensor, and the at least one vehicle component;   wherein the computer is programmed to, in response to a minimum time period or distance elapsing since sequentially activating the lamps and determining that a vehicle including the lamps is stopped and will continue to be stopped for a preset duration, sequentially activate the lamps, determine that an intensity for at least one of the lamps is below a respective intensity threshold based on data from the sensor during the sequential activations of the lamps, and actuate the at least one vehicle component in response to one of the intensities being below the respective intensity threshold.   
     
     
         2 . The system of  claim 1 , wherein the at least one vehicle component is at least one cleaning system positioned to clean the lamps. 
     
     
         3 . The system of  claim 2 , wherein the computer is further programmed to actuate the at least one cleaning system to clean the lamps that have intensities below the respective intensity thresholds. 
     
     
         4 . The system of  claim 1 , wherein actuating the vehicle component includes increasing a voltage to the lamps that have intensities below the respective intensity thresholds. 
     
     
         5 . The system of  claim 1 , further comprising a body panel fixed in a field of view of the sensor. 
     
     
         6 . The system of  claim 1 , wherein each lamp defines a cone of illumination, and the sensor is outside the cones of illumination. 
     
     
         7 . A computer comprising a processor and a memory storing instructions executable by the processor to:
 sequentially activate a plurality of lamps fixed relative to each other;   determine that an intensity for at least one of the lamps is below a respective intensity threshold based on data from a sensor during the sequential activations of the lamps; and   in response to one of the intensities being below the respective intensity threshold increase a voltage to each lamp having an intensity below the respective intensity threshold by an amount proportional to a difference between the respective intensity threshold and the respective intensity.   
     
     
         8 . The computer of  claim 7 , wherein the instructions further include to, in response to one of the intensities being below the respective intensity threshold, actuate at least one cleaning system to clean the lamps that have intensities below the respective intensity thresholds. 
     
     
         9 . (canceled) 
     
     
         10 . The computer of  claim 7 , wherein the instructions further include to determine surface normals from the data from the sensor during the sequential activations of the lamps, and determine the respective intensities for the lamps based on the surface normals and on the data from the sensor during the sequential activations of the lamps. 
     
     
         11 . The computer of  claim 7 , wherein the instructions further include to determine positions of ambient light sources from the data from the sensor during the sequential activations of the lamps, and determine the respective intensities for the lamps based on the positions of the ambient light sources and on the data from the sensor during the sequential activations of the lamps. 
     
     
         12 . The computer of  claim 11 , wherein the sensor data includes data of a body panel during each activation of one of the lamps, and determining positions of ambient light sources is based on the data of the body panel. 
     
     
         13 . A method comprising:
 sequentially activating a plurality of lamps fixed relative to each other;   determining that an intensity for at least one of the lamps is below a respective intensity threshold based on data from a sensor during the sequential activations of the lamps;   in response to one of the intensities being below the respective intensity threshold, select a pressure for a cleaning system based on a difference between the respective intensity threshold and the respective intensity; and   then actuate the cleaning system at the selected pressure to clean the respective lamp.   
     
     
         14 . (canceled) 
     
     
         15 . The method of  claim 13 , wherein actuating the vehicle component is further comprising, in response to one of the intensities being below the respective intensity threshold, increasing a voltage to the lamps that have intensities below the respective intensity thresholds. 
     
     
         16 . The method of  claim 13 , further comprising determining surface normals from the data from the sensor during the sequential activations of the lamps, and determining the respective intensities for the lamps based on the surface normals and on the data from the sensor during the sequential activations of the lamps. 
     
     
         17 . The method of  claim 13 , further comprising determining positions of ambient light sources from the data from the sensor during the sequential activations of the lamps, and determining the respective intensities for the lamps based on the positions of the ambient light sources and on the data from the sensor during the sequential activations of the lamps. 
     
     
         18 . The method of  claim 17 , wherein the sensor data includes data of a body panel during each activation of one of the lamps, and determining positions of ambient light sources is based on the data of the body panel. 
     
     
         19 . The computer of  claim 7 , wherein the instructions further include to, in response to one of the intensities being below the respective intensity threshold after increasing the voltage, actuate at least one cleaning system to clean the lamps that have intensities below the respective intensity thresholds. 
     
     
         20 . The computer of  claim 19 , wherein the instructions further include to, in response to one of the intensities being below the respective intensity threshold, select a pressure for the at least one cleaning system based on a difference between the respective intensity threshold and the respective intensity, and then actuate the at least one cleaning system at the selected pressure to clean the respective lamp. 
     
     
         21 . The computer of  claim 19 , wherein the instructions further include to, in response to one of the intensities being below the respective intensity threshold after increasing the voltage, decrease the voltage by the amount increased. 
     
     
         22 . The method of  claim 13 , wherein actuating the cleaning system at the selected pressure occurs upon determining that a vehicle including the lamps will be stopped for sufficient time to actuate the cleaning system.