The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2022
Filed:
May. 10, 2017
Institut Vedecom, Versailles, FR;
Universite Versailles Saint-quentin-en-yvelines, Versailles, FR;
INSTITUT VEDECOM, Versailles, FR;
UNIVERSITE VERSAILLES SAINT-QUENTIN-EN-YVELINES, Versailles, FR;
Abstract
The present invention relates to an optical telemetry system for measuring the distance between two vehicles comprising a first optoelectronic assembly formed by at least one light source SLand at least one photosensitive sensor CP+, which source and sensor are oriented towards in front of the vehicle, and a second optoelectronic assembly formed by at least one light source SL() and at least one photosensitive sensor CP() that is oriented towards behind the vehicle, characterized in that said light sources SLand SLare conventional light sources, the light source SLbeing modulated by a signal of frequency F, said light source SL() of the target () being modulated by a clock of frequency controlled by a phase-locked loop driven by the electrical signal delivered by said photosensitive sensor CP, said first optoelectronic assembly furthermore comprising a circuit for measuring the phase shift between the electrical signal delivered by said photosensitive sensor CP() and the signal modulating the paired light source SL(), said system furthermore comprising a computer for determining the distance depending on the frequency Fand the measured phase shift. The invention also relates to an optoelectronic assembly for an optical telemetry system, to a vehicle equipped with such a system and to a telemetry method.