US Patent 11925306 Docking station for autonomous floor cleaner

A docking station for charging an autonomous floor cleaner includes a transmitter that can transmit a signal for detection by the robot. The docking station can include an opaque shroud for the transmitter and/or spring-loaded charging contacts. The autonomous floor cleaner can comprise a passive receiver that detects signals emitted from the docking station and a time-of-flight sensor for position/proximity sensing. The robot can selectively turn off the time-of-flight sensor when docking with or avoiding the docking station. Methods for docking, re-docking, low power charging, docking station avoidance, obstacle response during docking, and close-proximity docking are disclosed.