Time-of-flight based distance measuring method and related distance measuring system

Abstract

A time-of-flight based distance measuring method and distance measuring system. The distance measuring method includes: intermittently transmitting a plurality of pulses from a pulse generation unit, wherein the plurality of pulses have a fixed pulse length but a non-fixed transmission period, and the plurality of pulses are reflected from a target to generate a plurality of reflected signals; controlling a TOF sensor to correspondingly perform a signal sampling for a predetermined time on the plurality of reflected signals respectively, based on a transmitting time of the plurality of pulses, to generate a sampling result according to a sampling time interval; detecting TOFs of the plurality of pulses from the pulse generation unit to the TOF sensor according to the sampling result; and determining a distance between the target and a reference position according to the TOFs.