发明名称 VORRICHTUNG ZUR GEWINNUNG EINER ORTSUNABHAENGIGEN UND ABSOLUTEN BEZUGSRICHTUNG
摘要 Described is a device for the determination of magnetic north in which several sensors designed to measure the field strength are mounted radially around the the metal body of the device. The invention calls for at least two sensor pairs to be used, the sensor pairs being connected to a multiplexer which interrogates them one after the other.
申请公布号 DE4101348(A1) 申请公布日期 1992.07.23
申请号 DE19914101348 申请日期 1991.01.18
申请人 BERGWERKSVERBAND GMBH, 4300 ESSEN, DE 发明人 WALLUSSEK, HEINZ, 5804 HERDECKE, DE;MEYER, MARTIN, 4224 HUENXE, DE;VORHOFF, WERNER, DR., 4230 WESEL, DE
分类号 E21B47/022 主分类号 E21B47/022
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