Device for determining position of navigatable object, comprises coils of background field coil system for generating background field, receiver, amplifiers for coupling the signals of the coils and agent to process and evaluate the signal

摘要

The object (12) is present within the background field (100 Hz) of predetermined frequency-dependent amplitude of its magnetic induction. The coils (13i, 23j) are used as the transmitting coil for generating a magnetic position measuring field (1-100 kHz) at the location of the object. The amplitude of the position measuring field is greater than the background field (Hex) provided with mechanically connected magnetic body. The signals are: generated by the object depending on the position measuring field; received by the receiver (21); and transmitted by a wired radio transmission unit. The signals of the coils are adapted with respect to their strength and/or their frequency and/or frequency and/or pulse width modulation to the magnetic background field and/or other magnetic fields. The object is a capsule of an endorobot unit and exhibits a video or a pH value or a pressure sensor or biopsy pliers as an actuator.