| 摘要 |
The invention relates to a device for distance measurement, comprising a transmission element (9) for emitting pulsed acoustic or electromagnetic waves. Said transmission element is provided at a first end of a distance (L) or at a known distance from said first end. The device contains a receiving element (13) for the emitted waves. Said receiving element (13) receives said waves at a second end of the distance (L) or, after reflection at the second end, at the first end. An evaluation and control unit (11) calculates the distance (L) from the running time and the signal speed. According to the invention, a telescope tube (3) with two engaging tube elements (5, 7) is used between the first and second end. The transmission element (9) and the receiving element (13) are arranged on the tube elements (5, 7) respectively or are coupled thereto via waveguides. One of the tube elements can also be coupled to a displaceable element which can change location.
|
