Patent ID: 7350307

Claim:
A system for detecting position or dimensions of an object comprising: at least one checking probe with detection devices, a remote transmission unit, electrically connected to the detection devices of said at least one probe, and adapted for wirelessly transmitting pulse signals indicative of a state of said at least one probe, and a receiver unit, adapted for wirelessly receiving signals, the receiver unit comprising: an input section, with at least one receiver device, adapted for providing input signals, a generation and control section adapted for generating and for defining reference signals, and a comparison section, electrically connected to the input section and the generation and control section, adapted for providing output signals responsive to results of comparison between the input signals and the reference signals, the generation and control section comprising threshold generation circuits and automatic checking circuits for checking difference in amplitude between the input signals and the reference signals, wherein said automatic checking circuits comprise discriminating circuits adapted for detecting at least one attribute of the input signals and for varying said difference in amplitude if said at least one detected attribute corresponds to the wirelessly received signals that differ from said pulse signals transmitted by the remote transmission unit.