| 摘要 |
A measuring system comprises at least two electrodes (N, P), a conducting medium between said electrodes, an electrical supply (4), for application of two periodic signals to the electrodes, which are out of phase by a phase shift of (<i> pi - epsilon </i>) inclusive, between the phase and the anti-phase. The system further comprises a measuring probe (2) provided in the medium close to the electrodes (N, P) for measuring a signal in the medium, the signal begin a function of the position of the measuring probe with relation to the electrodes, the geometry of the medium and the inhomogeneity thereof. The measurement is taken by the effective value (A) for the measured signal or by the out-of phase component (&phgr) thereof in comparison with one of the electrodes (N). The invention may be used in measuring distance, displacement, deformation, vibration, height and inclination.
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