Buried object detection sensor

• US 7,333,045 B1
• Filed: 02/28/2006
• Issued: 02/19/2008
• Est. Priority Date: 02/28/2006
• Status: Expired due to Fees

• Current Assignee: Mitsui Engineering & Shipbuilding Company Limited (Mitsui E&S Holdings Co., Ltd.)
• Original Assignee: Mitsui Engineering & Shipbuilding Company Limited (Mitsui E&S Holdings Co., Ltd.)
• Inventors: Sakamoto, Yoshiyuki, Oka, Fujio, Joumuta, Chihiro, Aomori, Naoto
• Primary Examiner(s): Gregory; Bernarr E.
• Application Number:
  US11/363,053
• Publication Number:
  US 20080042892A1
• Time in Patent Office: 721 Days
• Field of Search: 324323-329, 324332-375, 343332-375, 343/731, 343/732, 343/745, 343/748, 343/793, 343/799, 343/800, 343/853, 343/855, 343/866, 343/867, 343/893, 343/895, 342/21, 342/22, 342/27, 342/52, 342/53, 342/59, 342/175, 342190-197, 342361-366, 342/188
• US Class Current: 342/22
• CPC Class Codes: G01S 13/88 Radar or analogous systems specially adapted for specific applications electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00
• CPC Class Codes: G01S 13/885 for ground probing prospecting or detecting using electromagnetic waves G01V3/12
• CPC Class Codes: G01V 11/00 Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
• CPC Class Codes: G01V 3/15 specially adapted for use during transport, e.g. by a person, vehicle or boat
• CPC Class Codes: H01Q 21/20 the units being spaced along or adjacent to a curvilinear path slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062

Abstract

A combined type buried object detection sensor is provided, in which a MD and a GPR are integrated to improve a detectivity. A buried object detection sensor 10 has a constitution in which plural antenna elements composing a GPR 14 are disposed on a circumference, an inner coil 16 of a MD 12 is arranged at a center portion of the GPR 14 and an outer coil 18 of the MD 12 is arranged at a periphery of the GPR 14, the GPR 14 has slits 20 separating the respective antenna elements, and the slits 20 between adjacent antenna elements are connected by a metal leaf 36.

Claims

1. A buried object detection sensor, comprising:

a ground penetrating radar including plural antenna elements arranged on an outer surface of the ground penetrating radar;

a metal detector being positioned at a center portion of said ground penetrating radar, the center portion of the ground penetrating radar corresponding to a center position of the metal detector;

slits separating the respective antenna element of said ground penetrating radar; and

a metal leaf connecting the antenna elements to each other by spreading across said slits between the adjacent antenna elements.

2. The buried object detection sensor according to claim 1,

wherein said metal detector includes:

a coil arranged at the center portion of said ground penetrating radar and another coil arranged at a periphery of said ground penetrating radar.

3. The buried object detection sensor according to claim 1,

wherein said ground penetrating radar and said metal detector are arranged on the same plane.

4. A buried object detection sensor, in which a metal detector composed of coils, and a ground penetrating radar composed of plural antenna elements arranged on an outer surface of the ground penetrating radar so that a center of the coils is to be a measurement reference point, are arranged on substantially the same plane,

wherein the ground penetrating radar is disposed on the center of the coils, in which the antenna elements are separated from one another by a slit so as not to allow current caused by a magnetic field generated by the metal detector to spread across the plural antenna elements;

and

wherein a metal leaf electrically connecting the antenna elements separated by the slit to each other, is included.

5. The buried object detection sensor according to claim 4, wherein the coils include an outer coil arranged at an outer periphery of the ground penetrating radar and an inner coil arranged within the outer coil on the outer surface of the ground penetrating radar, and one of the coils is set as a transmission coil and the other is set as a receiving coil.