| US 7,403,112 B2 | ||
| Search device for locating a transmitter, in particular an avalanche-victim search device | ||
| Gerald Kampel, Hainbuchenstrasse 67, Taufkirchen 82024 (Germany); Ingo Zawallich, Unterföhring (Germany); and Rolf Matzner, Starnberg (Germany) | ||
| Assigned to Gerald Kampel, Taufkirchen (Germany) | ||
| Filed on Mar. 16, 2005, as Appl. No. 11/82,079. | ||
| Claims priority of application No. 10 2004 013 097 (DE), filed on Mar. 17, 2004; and application No. 10 2004 027 314 (DE), filed on Jun. 04, 2004. | ||
| Prior Publication US 2005/0231359 A1, Oct. 20, 2005 | ||
| Int. Cl. G08B 1/08 (2006.01) | ||
| U.S. Cl. 340—539.13 [340/573.1; 455/90.1] | 40 Claims |
| 1. A portable search device that locates a transmitter, the search device comprising:
a search antenna that receives a transmitter signal sent out by a transmitter from a momentary search direction;
a magnetic field sensor that detects magnetic field signals related to the earth's magnetic field;
a signal processor that assigns to each received transmitter signal a fixed search angle relative to the magnetic field signals
and also generates an angle signal from the transmitter signals relative to the magnetic field signals, the angle signal representative
of a reception field strength assigned to the search angle; and
an output unit in communication with the signal processor that receives the angle signal from the signal processor, the output
unit configured to generate result signals representative of the angle signal.
|