Abstract: A system for monitoring an electrohydraulic servo valve may comprise a brake control unit, a valve monitoring sensor configured to measure a pressure in a conduit fluidly connected to a control port of the electrohydraulic servo valve, and a tangible, non-transitory memory configured to communicate with the brake control unit. The brake control unit may be configured to receive a brake command, output a pressure signal to the electrohydraulic servo valve based on the brake command, receive a sensor signal from the valve monitoring sensor, and determine a health of the electrohydraulic servo valve based on the sensor signal.

Abstract: A method comprises receiving touch contact from a user on a surface and disinfecting the surface after the user breaks contact with the surface. The method includes changing color of the surface after the user breaks contact with the surface from a first color to a second color as a visible indicator that the surface has been recently touched. Further, the method includes changing the color of the surface from the second color back to the first color after disinfecting the surface as an indicator that the surface is safe to touch.