Title:
DETERMINATION DEVICE FOR WEAPON
Document Type and Number:
Japanese Patent JP2011070621
Kind Code:
A
Abstract:
To provide a determination device for weapons that sensing approach of a person who conceals weapon such as a cutting tool.
The determination device KS determines whether a metal made of iron corresponds to weapon or not. The determination device KS includes an MI sensor SS detecting residual magnetization formed by the metal at detection resolution of pico-Tesla-order. A controller CP of the determination device KS estimates whether the metal can be used as the weapon or not, by determining a magnetic field distribution based on the residual magnetization detected by the MI sensor SS. The controller CP transmits an estimation result.
Inventors:
UCHIYAMA GO
NAKAYAMA SHINSUKE
FUJII EIJI
NAKAYAMA SHINSUKE
FUJII EIJI
Application Number:
JP2009240852A
Publication Date:
April 07, 2011
Filing Date:
September 25, 2009
Export Citation:
Assignee:
UCHIYAMA GO
International Classes:
G08B25/04; G01B7/00; G01N27/72; G01R33/02; G01V3/10
Domestic Patent References:
| JP2003185759A | 2003-07-03 | |||
| JP2005258515A | 2005-09-22 | |||
| JP2000171443A | 2000-06-23 | |||
| JPH05142204A | 1993-06-08 |