To measure the absolute distance in front of the direction with an optical switch

摘要

An absolutely distance measurements in front of the direction (adm), which is a distance to a target position is determined, a light source which emits a light beam emitted. The adm also comprises a fiber switch network having at least one optical switch, the at least between two positions in response to a switch expensive signal switches, wherein a first of the positions a measuring mode is activated, in which the emitted light beam from the fiber switch network to the destination is emitted and as a measuring light beam reflected back into the fiber switch network is, a second of the positions a reference mode is activated, in which the light beam in the form of a reference light beam within the fiber has a switch network. The adm further comprises a single-channel, which the mess - and reference light beams in a temporarily spaced, multiplexed manner detected and an electrical signal, which with the detected measuring - and reflected light beams corresponds. The adm also comprises a einkanalsignalprozessor, the electrical signal is processed and a conditioned electrical signal in response thereto, and a data processor, which the conditioned electrical signal is processed, the distance to the target in order to determine.