Elektronisches Entfernungsmessgerät und Frequenzmoduliertes Bestimmungsverfahren eines Rückkopplungssignals

Details

Veröffentlichungs-Nr.

EP3474035

Aktenzeichen

EP18194123

Anmeldetag

12. September 2018

Veröffentlichung

11. Mai 2022

Erteilung

11. Mai 2022

Rechtsraum

EP

IPC

G01S7/4913G01S17/36G01S7/4912G01S17/34

Abstract

An electronic distance meter comprises a distance measuring light projecting module, a photodetector, a photodetection circuit, and a control arithmetic module, wherein the distance measuring light projecting module has a light emitter, the light emitter emits a distance measuring light, the photodetector receives a reflected distance measuring light from an object to be measured and produces photodetection signals, the photodetection circuit generates an intermediate frequency signal based on the photodetection signals, and the control arithmetic module controls the photodetection circuit and calculates a distance to the object to be measured based on each of the photodetection signals, and wherein the control arithmetic module coincides a frequency orthogonal to a frequency which a sampling signal has with a frequency of a feedback signal on a curve, which is acquired by performing a DFT processing on the sampling signal acquired by sampling the intermediate frequency signal.

Anmelder

Firma

TOPCON CORPORATION

Land

🇯🇵 Japan

Fachgebiete