Construction equipment's working zone securing device for e.g. logistics center, has machine-transmitter comprising antenna cable for emitting machine-waves according to shape of loop and delimiting working zone around loop

摘要

The device has machine warning units (13) for emitting a machine-signal (14) when a machine receiver (12) receives operator-waves (21) corresponding to presence of an operator (2) e.g. pedestrian, in a working zone (3). Operator warning units (23) emit an operator signal (24) when an operator receiver (22) receives machine-waves (11) corresponding to presence of the operator in the zone. A machine-transmitter comprises an antenna cable (10) forming an opened or closed loop and emitting the machine-waves according to shape of the loop and delimiting the zone around the loop.