JP2006216004A - Dangerous object detecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dangerous object detecting structure in a comfortable environment by preventing discomfort in inspection by a gate passing type metal detector. <P>SOLUTION: A detecting part composed of a search coil or the like is arranged under the floor, a guide part for passing a specific walk path is formed on the floor in a state wherein a structure, a pattern, or the like of a floor face can be visually distinguished, and detection accuracy is improved by using a capacity sensor or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is intended to prevent the introduction of dangerous items such as firearms, blades, and explosives to the airport, or to detect suspicious persons who carry dangerous items such as metals in gatherings and events where an unspecified number of people gather. In particular, the present invention relates to a dangerous object detection device in consideration of a mental environment for a subject.

Conventionally, there are various methods to prevent the introduction of dangerous items such as firearms, blades, and explosives to the airport, and to detect suspicious persons who possess metal objects at gatherings and events where an unspecified number of people gather. An apparatus and a method have been proposed.

As a representative example of a dangerous goods carry-in prevention method, as disclosed in Japanese Patent Application Laid-Open No. 2003-346267 “Theft deterrence / prevention / prediction method and carpet-type gate moving image recognition technology combined use theft deterrence / prevention / prediction device” There is known a method of detecting a carry-in of a dangerous object by providing a gate-type device equipped with a metal detector using a magnetic coil and allowing it to pass by one by one. (See Patent Document 1).
JP 2003-346267 A

Problems to be solved by the invention

However, in the above-mentioned method, the gate is passed through the gate under the view of the people, and the inspection is performed. It has problems such as mental discomfort.

In addition, it has been pointed out that the efficiency of the inspection is long because it passes through the gate.

Means for solving the problem

  The present invention solves the above-described conventional problems, and by placing a detection unit under the floor and providing a guide unit for passing a prescribed walking path on the floor, an inspection is performed in a pedestrian sense, It is a dangerous goods detection device characterized in that it does not place a mental burden on the subject, it performs inspections by conducting a large number of people at once and passing through without being inspected. It is possible to complete.

In the above configuration, the detection unit is a search coil and generates a magnetic field due to alternating current. When a person carrying a metal object passes over the search coil, the magnetic flux changes, so that it is possible to detect the introduction of a dangerous object.

The guide section provided on the floor surface is formed with a guide line by applying or painting a tape of a color / pattern that can be visually distinguished from the floor surface pattern on the floor surface, or a step on the floor surface. Is provided, and is guided by the guide portion so as to pass through the upper surface of the detection portion.

Further, when the search coil is arranged under the floor, it is possible to prevent malfunction due to geomagnetism, external noise, etc. by blocking the magnetic field around the passage.

Furthermore, it is possible to improve the detection system by installing the search coil and the detection coil separately. The detection coil can also be installed in the ceiling along the passage. The floor surface on which the detection unit is arranged can use a transparent member, and usually uses plate glass.

It is possible to arrange a plate glass having unevenness on the upper portion of the search coil on the floor surface, and thereby it is possible to clearly indicate the portion to be passed and guide the subject on the search coil. .

The upper part of the search coil on the floor surface can also be constituted by the plate glass having the unevenness, and the subject can be guided on the search coil by clearly indicating the portion to be passed in the same manner as when placed on the floor surface. Is possible. When the plate glass is arranged on the floor surface, there is a possibility that the subject will whisper because a slight level difference is formed when passing, but the upper part of the search coil on the floor surface is uneven. In the case where the plate glass is used, a step is not formed, so that the possibility of rolling is low, and the vehicle can pass more smoothly.

Moreover, the said plate glass uses the laminated glass which has an electrically conductive film, and this electrically conductive film can also form a coil pattern by an etching. The coil pattern can also be used as a search coil. Since the search coil is formed on the glass constituting the floor surface, a space for arranging the search coil is not required under the floor, so that the enforcement is easy. The conductive film is preferably sandwiched between intermediate films to prevent disconnection or short circuit.

A plurality of search coils and detection coils can be provided, and the detection accuracy can be improved by providing a plurality of search coils and detection coils.

A plurality of search coils are arranged under the floor, and a plurality of detection coils are arranged on the ceiling. The search coil is arranged to be inclined with respect to the traveling direction and arranged to be perpendicular, and the detection coil is arranged to be paired with the search coil. Such a configuration detects the height position of the metal part carried by the subject from the intersection of the inclined pair and the vertical pair, and sends data to the display board. Note that the frequency of the magnetic field is changed to prevent interference between the plurality of coils.

A pair of search coils and receiving coils that are inclined in the direction of travel are installed, and a capacitive sensor that detects the position of the human body is installed under the glass floor.
Since the holding height of the metal part can be calculated from the position sensor when the magnetic coil detects the metal part, it can be examined in detail with a hand-type sensor.

FIG. 1 is a diagram showing a first embodiment of the dangerous goods detection apparatus of the present invention, FIG. 2 is a diagram showing a second embodiment of the dangerous goods detection apparatus of the present invention, and FIG. FIG. 4 is a diagram showing a fourth embodiment of the dangerous goods detection apparatus of the present invention, and FIG. 5 is a diagram showing the dangerous goods detection apparatus of the present invention. FIG. 6 is a diagram showing a sixth embodiment of the dangerous goods detection apparatus of the present invention, and FIG. 7 is a seventh embodiment of the dangerous goods detection apparatus of the present invention. FIG.

  FIG. 1 is a diagram showing a first embodiment of the dangerous goods detection apparatus of the present invention. In this embodiment, the detection unit 1 includes a search coil 11 and is disposed below the floor 2 serving as a walking passage. The upper part of the floor 2 is configured by forming a guide line by attaching or painting a tape with a color / pattern that allows a predetermined walking path to pass, or by providing a block 41 that forms a step on the floor surface. The guide part 4 is provided, and the pedestrian can detect the dangerous substance hidden in the foot part by passing along the conducting wire of the guide part 4.

  FIG. 2 is a diagram showing a second embodiment of the dangerous object detection apparatus of the present invention. In this embodiment, the guide unit 1 is formed in a pattern that can be visually distinguished from a floor pattern that is uneven on the surface of the floor 2. Specifically, the upper surface of the floor 2 in which the search coil 11 is embedded is covered with a plate glass 5, and the upper surface of the plate glass 5 is made uneven by sandblasting and etching to constitute the guide portion 4. Moreover, in order to brighten the glass plate 5 by providing an illumination device 6 such as an LED or a white light as a backlight as necessary, the pedestrian passes along the lead wire of the guide portion 4 so that the foot portion You can detect dangerous objects hidden in.

  Furthermore, the guide part 4 in this example is configured such that the plate glass 5 is set higher than the upper surface of the floor 2 and a step is generated.

  FIG. 3 is a diagram showing a third embodiment of the dangerous object detection apparatus of the present invention. This embodiment is characterized by comprising a search coil 11 and a detection coil 12. Specifically, the search coil 11 is disposed on the lower surface of the floor 2, and the detection coil 12 is disposed on the ceiling 3.

  FIG. 4 is a diagram showing a fourth embodiment of the dangerous object detection apparatus of the present invention, and FIG. 5 is a diagram showing the fifth embodiment of the present invention. In these embodiments, a laminated glass 50 having a conductive film is disposed on the surface of the floor 4 above the search coil 11. The laminated glass 50 having this conductive film has the coil pattern 11 formed by etching. By using the laminated glass 50 through the intermediate film 51, the laminated glass 50 has a highly durable structure that prevents disconnection and short circuit. ing.

  FIG. 6 is a diagram showing a sixth embodiment of the dangerous goods detection apparatus of the present invention. In this embodiment, a search coil 11 that is inclined in the traveling direction and a receiving coil 14 that is paired with the inclined search coil 11 are provided. It is set as the structure which can detect the height position of a metal.

  FIG. 7 is a diagram showing a seventh embodiment of the dangerous object detection apparatus of the present invention. In this embodiment, a search coil 11 inclined in the traveling direction and a receiving coil 14 paired with the inclined search coil 11 are installed, and a capacity for detecting the position of a human body below a plate glass placed on the floor surface. A sensor 13 is arranged. Thereby, the height position of the metal carried by the subject can be detected.

  In addition, it is preferable that the outer periphery of the detection unit according to the present invention has a structure that blocks a magnetic field.

The invention's effect

  The dangerous substance detection apparatus according to the present invention is configured as described above, and by providing the guide unit, the subject can be effectively guided to the detection unit, and the subject can feel uncomfortable. Can be examined. In addition, according to each configuration of the present invention, not only detection of various dangerous goods possessed by the body, but also detection of dangerous goods hidden in a shoe sole close to the distance because a detection coil is provided on the glass floor. It becomes easy to detect, and also has an effect that non-metal can be detected by changing the frequency to be used.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram showing 1st Example of this invention, (a) is a plane schematic diagram, (b) is a side cross-sectional schematic diagram. It is a schematic diagram showing 2nd Example of this invention, (a) is a plane schematic diagram, (b) is a side cross-sectional schematic diagram. It is a schematic diagram showing 3rd Example of this invention, (a) is a plane schematic diagram, (b) is a side cross-sectional schematic diagram. It is a schematic diagram showing 4th Example of this invention, (a) is a plane schematic diagram, (b) is a side cross-sectional schematic diagram. It is a schematic diagram showing 5th Example of this invention, (a) is a plane schematic diagram, (b) is a side cross-sectional schematic diagram. Schematic diagram showing the sixth embodiment of the present invention. It is a schematic diagram showing 7th Example of this invention, (a) is a plane schematic diagram, (b) is a side cross-sectional schematic diagram.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Detection part 2 Floor 3 Ceiling 4 Guide part 41 Block or guide wire 5 Plate glass 11 Search coil 12 Detection coil 13 Capacitance sensor 14 Reception coil 50 Laminated glass 51 Intermediary film 6 Illumination device

Claims (14)

  A dangerous object detection device, characterized in that a detection unit is arranged under the floor, and a guide unit is provided on the floor for passing a prescribed walking path.   The dangerous object detection device according to claim 1, wherein the detection unit includes at least a search coil.   The dangerous object detection device according to claim 1, wherein the detection unit includes at least a search coil and a detection coil.   The dangerous object detection device according to claim 1, wherein a plurality of the search coils and the detection coils are provided.   5. The dangerous object detection apparatus according to claim 1, wherein a plurality of search coils are arranged under the floor, and a plurality of detection coils are arranged on the ceiling.   6. The dangerous object detection device according to claim 1, wherein the guide portion is formed on the floor surface in a pattern that can be visually distinguished from the pattern on the floor surface.   The dangerous material detection device according to claim 1, wherein the guide portion is configured by a step formed on a floor surface.   The dangerous object detection device according to claim 1, wherein a plate glass having unevenness is disposed in a portion above the search coil on the upper surface of the floor surface.   The dangerous object detection device according to claim 1, wherein a portion of the floor surface above the search coil is configured by a plate glass having unevenness.   8. The dangerous object detection device according to claim 1, wherein a laminated glass having a conductive film is disposed on a portion of the floor surface above the search coil.   The dangerous substance detection apparatus according to claim 10, wherein the conductive film forms a coil pattern.   The dangerous object detection according to any one of claims 6 to 11, wherein a search coil inclined in a traveling direction and a receiving coil paired with the inclined search coil are installed, and a plurality of pairs are provided respectively. apparatus.   A search coil inclined in the advancing direction and a receiving coil paired with the inclined search coil are installed, and a capacitive sensor for detecting the position of the human body is arranged below the plate glass arranged on the floor surface. The dangerous object detection device according to claim 6.   The dangerous object detection device according to claim 1, wherein a magnetic field around an outer periphery of the detection unit is blocked.

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