The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 1987
Filed:
Sep. 21, 1984
Rainer Faller, Munich, DE;
Friedrich Landstorfer, Munich, DE;
Abstract
Method and device for measuring two orthogonal electromagnetic field components using a cross coil and for evaluating the components in the distance measurement in electronically course-steered vehicles (13). For rapid and ensured detection of malfunctions of the distance measuring system, use is made of an antenna effecting concurrent positionally and timewise measurements, and with the coils each consisting of bifilar or trifilar coil wires representing a redundant measuring system. A monitoring unit is used to continuously compare the signals generated by the various wires of the antenna when scanning the magnetic field. When a malfunction occurs in one of the channels, vehicle steering control is continued by the respective other channel and the defect is indicated via the monitoring unit. As monitoring signals, use can also be made of direct currents superimposed in the coils.