Patent ID: 8125335

Claim:
Metal detector gate comprising two uprights ( 12 , 14 ) housing sensors forming a metal mass detector, particularly transmitter/receiver coils ( 20 , 22 ), associated with a power supply and processing module ( 30 ), and defining between them a channel for individuals to be checked to pass through, each of the uprights ( 12 , 14 ) comprising a series of light sources ( 40 ) distributed over its height to display alarms, characterized in that it also comprises a radioactive radiation detector ( 25 ) associated with the power supply and processing module ( 30 ) and that said module is suitable for controlling the light sources ( 40 ) so that said light sources emit a first color on detecting metal masses and emit a second color, different from the first color, on detecting a radioactive radiation, and wherein the power supply and processing module 30 is suitable for driving the two series of light sources ( 40 ) provided respectively on each of the two uprights ( 12 , 14 ) differently according to the lateral horizontal position of the detected objects and said metal detector gate further comprises: i) identical power supplies for the two series of sources ( 40 ) for an object detected in the center of the gate, ii) a power supply only for the series of sources ( 40 ) located on the left side of the gate for an object detected on the left side of the gate, and iii) a power supply only for the series of sources ( 40 ) located on the right side of the gate for an object detected on the right side of the gate.