Patent ID: 8386067

Claim:
A machine tool monitoring device, comprising: an identification unit for identifying an operating situation of a machine tool, the identification unit including at least one UWB radar sensor configured to determine position and/or speed of at least one of a human tissue and/or an animal tissue; and at least one optical projection unit for defining at least one region to be monitored, wherein the at least one region to be monitored by the at least one optical projection unit marks at least one region to be monitored by the identification unit, wherein at least one region to be monitored by the at least one projection unit has an optical appearance, the at least one optical projection unit comprises: a laser unit which projects a laser light, wherein if at least one of: a human tissue; and an animal tissue enters into said at least one region to be monitored, wherein the laser light changes at least one of color and light intensity resulting in a change in the optical appearance.