Probe arrangement for transmitting course information from a magnetic compass, which is not gimbled, to a remote compass system, a self-controlling system or a similar system

摘要

In the case of systems for transmitting course information from a magnetic compass which is not gimbled, by means of scanning probes which are fitted firmly to the compass casing, transmission errors occur when the ship tilts. These transmission errors are remedied according to the invention in that two probes are fitted to the compass stand at different distances from the compass-rose magnet system. The sensitive directions of the probes are parallel to one another and their sensitivities are identical to one another. The probe output voltages are subtracted from one another. The difference voltage depends only on the ship's course, even during rolling, because the components of the earth's vertical field which have an interfering effect on the probes during rolling cancel one another out as a result of the difference formation. As a result of the different distances of the probes from the compass-rose magnet system, a "useful" voltage remains which supplies the course information. More than two scanning probes and a system comprising a plurality of probes (for example in each case one for the ship's longitudinal direction and lateral direction) can also be used, instead of in each case one probe. If required, the probe sensitivities are also different in the first-mentioned case. IMAGE