Concrete surface mapping robots, systems, and methods for processing concrete surfaces

A concrete surface processing machine for processing a concrete surface, the concrete surface processing machine comprising:

• one or more support elements, the one or more support elements extending parallel to the concrete surface in a base plane of the machine;
• at least one laser range finder operably coupled to the concrete surface processing machine, the at least one laser range finder being in a fixed orientation relative to the concrete surface processing machine;
• and
• a control unit operably coupled to the at least one laser range finder,
• wherein the concrete surface processing machine rotates via the one or more support elements about an axis extending through a centroid of the concrete surface processing machine and normal to the base plane,
• wherein as the concrete surface processing machine rotates about the axis, the at least one laser range finder is rotated about the axis by the concrete surface processing machine,
• wherein as the concrete surface processing machine rotates about the axis, the at least one laser range finder obtains a sequence of ranges to different portions of a boundary of the concrete surface, and
• wherein the control unit determines a boundary geometry of the concrete surface based on the sequence of ranges.