Distance sensor, for determining relative movement of two objects, has circuit that subjects active measurement elements to phase-shifted transmission signals, compares phases of transmission signals, measurement signal from passive element

摘要

Distance sensor device (1) has a measurement circuit (9) that subjects at least three active measurement elements (211,221,231,..) to respective phase-shifted transmission signals and determines the relative position of at least one coupling element to the active measurement elements by comparing the phases of the transmission signals with the phase of a measurement signal received from a passive measurement element (31).