AN AUTONOMOUS MACHINE

摘要

An autonomous machine (1) needs to establish when it has completed a circuit of a working area. The machine comprises a main body (2) and a marker such as an annular magnetic puck (21). A control system is arranged to cause the main body to traverse a working area according to a predetermined sequence. A detector (22, 33) is arranged to detect the marker, one of the detector and the marker being located on the main body. The control system is arranged to recognise a predetermined location in the area, or to effect a predetermined part of the sequence, on detecting the marker. Preferably, the marker is slidably located on a power cable (9) for the machine.