Abstract: The invention relates to an arrangement for the non-contact defined movement of at least one magnetic body, free to move in at least one dimension. A simple arrangement of this type, taking up a reduced volume, of universal application, for both positioning and orientation and also for energy generation and transmission, can be achieved, by means of arranging the body with a magnetic moment in the primary magnetic field of at least one permanent magnet which moves in a defined manner, said body having a secondary magnetic field extending from the body, aligned with the primary magnetic field. At least one magnetic field sensor is provided to record the secondary magnetic field in any position of the body.

Abstract: An apparatus and a method for finding a device, whereby at least one magnetic dipole, arranged in the area of the device, rotates about a rotation axis extending at an angle of >0° to the device length axis, the three time-dependent magnetic-field components Hx(t), Hy(t) and Hz(t) are detected, and the position, the orientation of the device axis and/or the roll angle of the device is calculated from this.

Abstract: Disclosed is an assembly and method for locating magnetic objects or objects that can be magnetized, with the objects being located in non-magnetic media. To increase the detection depth for such objects and to clearly register their shape, position and structures on single detection planes, at least one sensor is arranged in a primary magnetic field of a magnetic field generator and the magnetization distribution of the magnetic field is uniform in the vicinity of the corresponding senor or its local profile is known.

Abstract: The invention relates to an apparatus for location of an instrument or appliance having at least one magnet which produces a magnetic moment at right angles to the appliance shaft and can be rotated independently of the instrument or appliance. This results in a location system which allows precise location at an accurate time, determination of the axis direction and control of an appliance which is being operated in a channel or medium.

Abstract: The invention concerns a method and an arrangement for determining the position of a marker in an organic cavity, in particular for establishing local passage speeds within the framework of the medical diagnosis of the stomach-bowel tract. The object of the invention is to provide a solution which ensures position-determining accuracy of greater than 1 cm in all three co-ordinate directions and permits position-determining times of 10 seconds and less in each case. According to the invention, this object is achieved in that at least one coil is acted upon in a time interval in a pulsed manner by current whose sign changes in each case between two current pulses, when the primary magnetic field, of the coil, produced thereby has died out to sufficiently low values. The secondary magnetic field generated by a marker is measured separately at least once by anisotropic magnetic field sensors parallel and perpendicular to the coil axis.