Metal-detector means for locating the presence of metal objects
OwnerAlessandro Manneschiinventor
Life of this patent
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Abstract
A system for detecting forbidden objects worn or carried by individuals includes a metal detector having at least three transducers arranged on either side of a passage, two of these transducers being positioned on the one same side of the passage and spaced apart longitudinally in the direction of travel through the passage, while the third transducer is positioned on the opposite side of the passage so that the three transducers are available in combination to perform spatial discrimination of the location of the metallic objects detected.
Claims20
A metal detector configured to detect a metal object and comprising:
- a first and a second panels defining a passage therebetween;
- transducers comprising two transducers placed in the first panel and being spaced longitudinally along a direction of displacement of an individual within the passage and one transducer disposed in the second panel, so that the transducers are configured to spatially discriminate a location of the metal object;
- two passage detection barriers configured to generate a detection signal when an individual passes through the metal detector;
- and
- a central unit configured to analyze the signals from at least one of the passage detection barrier and signals from the transducers, to determine a position of the individual in the metal detector relative to the transducers at the time when at least one of the transducers generates a signal indicative of detection of a metal object and to deduce therefrom a location of the metal object relative to a body of the individual.
A detection method comprising the following steps:
- S1:
- detection of a metal object carried by an individual passing through a metal detector and generation of a metal detection signal;
- S2:
- detection of a passage of the individual through the metal detector and generation of a passage detection signal;
- S3:
- analysis of the passage detection signal and the metal detection signal;
- S4:
- determination of the location of the individual in the metal detector relative to transducers of the metal detector at the time the metal detection signal is generated;
- and
- S5:
- deduction of a location of the metal object relative to a body of the individual.
A detection system configured to detect a metal object carried by an individual, comprising:
- a metal detector comprising:
- a first and a second panels defining a passage therebetween;
- and
- three inductive transducers housed in the first and second panels and being disposed on either side of the passage, two of the inductive transducers being placed in the first panel and being spaced longitudinally in a direction of displacement of the individual in the passage, while the third inductive transducer is disposed on the opposite side of the passage in the second panel, so that the inductive transducers are configured to spatially discriminate the location of the metal object;
- three passage detection barriers being spaced longitudinally along the passage and configured to generate a detection signal when the individual passes through the metal detector;
- and
- a central unit configured to analyze the signals from at least one of the passage detection barriers and signals from the three inductive transducers, to determine the position of the individual in the metal detector relative to the inductive transducers at the time when at least one of the inductive transducers generates a signal indicative of a detection of a metal object and to deduce therefrom a position of the metal object relative to a body of the individual.
Dependencies are inferred from the claim text.