Patent ID: 8169604

Claim:
Parameter detection system for detecting in a non-mechanical manner at least one parameter of an object ( 1 ) to be examined or treated, comprising: a mounting device ( 2 ) adapted for holding said object ( 1 ), a mobile unit ( 14 ) adapted for indicating a position on said object, sensing means ( 10 , 11 ; 14 , 20 ; 23 , 24 , 25 ) adapted for sensing said position on said object ( 1 ) indicated by said mobile unit ( 14 ) and outputting corresponding detection signals indicative of said position, and calculation means ( 13 ) adapted for calculating said at least one parameter from said position on said object ( 1 ) based on said detection signals; wherein said mobile unit ( 14 ) is a handheld device and is freely movable within a predetermined working space related to said object ( 1 ); wherein said signals emitted by said mobile unit ( 14 ) include at least one of ultrasonic signals or radio frequency signals; wherein said sensor means includes at least three receivers ( 20 ) for receiving signals emitted from said mobile unit ( 14 ), each located at a predetermined position; and wherein said at least one parameter related to said object ( 1 ) is detected by time-of-flight trilateration.