LOCATING DEVICE

• US 20100328137A1
• Filed: 10/31/2008
• Published: 12/30/2010
• Est. Priority Date: 12/21/2007
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Braun, Heiko, Krapf, Reiner, Mahler, Michael, Wieland, Christoph, Hoffmann, Ulli
• Granted Patent: US 8,686,891 B2
• Time in Patent Office: Days
• US Class Current: 342/27
• 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: G01S 7/024 using polarisation effects in waveguides H01P1/165; for aerials H01Q, e.g. H01Q15/22, H01Q15/24, H01Q19/195
• CPC Class Codes: H01Q 1/04 Adaptation for subterranean or subaqueous use
• CPC Class Codes: H01Q 21/26 Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Abstract

The invention relates to a locating device, in particular a hand-guided locating device, with a locating unit (36) for detecting the presence of an object (16, 18) arranged in an examination object (14) by means of an examination signal (38), which has a polarization unit (50) provided for a procedure with the examination signal (38), and with a housing (20) for taking up the locating unit (36), which has a longitudinal axis (24). It is proposed that in at least one operating mode the polarization unit (50) specifies at least one first polarization plane (52, 54) aligned obliquely to the longitudinal axis (24).

Claims

1. Locating device, in particular a hand-guided locating device, with a locating unit for detecting the presence of an object arranged in an examination object by means of an examination signal, which has a polarization unit provided for a procedure with the examination signal, and with a housing for taking up the locating unit, which has a longitudinal axis wherein at least one operating mode the polarization unit specifies at least one first polarization plane aligned obliquely to the longitudinal axis.

2. The locating device according to claim 1 wherein a grip element for gripping by an operator at a locating procedure, which is coupled with the housing.

3. The locating device according to claim 1, wherein the polarization plane creates an angle of ca. 45°

with the longitudinal axis.

4. The locating device according to claim 1, wherein the polarization plane is a transmitting polarization plane in at least one operating mode, which is at least assigned to one transmitting channel for transmitting the examination signal.

5. The locating device according to claim 1, wherein the polarization plane is a receiving polarization plane in at least one operating mode, which is at least assigned to one receiving channel for receiving the examination signal.

6. The locating device according to claim 1, wherein the polarization unit provides at least the second polarization plane, which is different from the first polarization plane.

7. The locating device according to claim 6 wherein at least one operating mode one of the polarization planes is a transmitting polarization plane, which is assigned to at least one transmitting channel for transmitting the examination signal, and another polarization plane is a receiving polarization plane, which is assigned to at least one receiving channel for receiving the examination signal.

8. The locating device according to claim 6 wherein the polarization planes are arranged orthogonally to each other.

9. The locating device according to claim 6 wherein the polarization planes are arranged obliquely to each other.

10. The locating device according to claim 6, wherein the second polarization plane is aligned parallel or orthogonally to the longitudinal axis.

11. The locating device according to claim 1, wherein the polarization unit provides at least two further polarization planes.

12. The locating device according to claim 1, wherein the polarization unit provides a rotation means, which is provided to rotate the alignment of at least one polarization plane relatively to the longitudinal axis.

13. The locating device according to claim 1, wherein a chassis, which is provided for guiding the locating unit over a surface of the examination object in a preferred moving direction, whereby the polarization plane is arranged relatively oblique to the preferred moving direction.

14. Procedure for locating an object that is arranged in an examination object with a locating device, in particular according to one of the previous claims, at which a housing of the locating device is moved over a surface of the examination object wherein an examination signal that is polarized in a transmitting polarization plane is transmitted into the examination object, whereby the transmitting polarization unit is aligned obliquely to a longitudinal axis of the housing.

15. Procedure according to claim 14 is wherein the examination signal is received in at least one receiving polarization unit that is different from the transmitting polarization unit.

16. Procedure according to claim 15 wherein the examination signal is received in several receiving polarization units that are different from the transmitting polarization unit.

17. Procedure according to claim 14 wherein the examination signal is received in the transmitting polarization plane.

18. Procedure according to claim 14 wherein the examination signal is received in the transmitting polarization plane and in at least one receiving polarization plane that is different from the transmitting polarization plane.

19. Procedure according to claim 18 wherein the examination signal is received in the transmitting polarization plane and in several receiving polarization planes that are different from the transmitting polarization plane.