HAND-HELD LASER DISTANCE MEASURING DEVICE WITH A PULSE REFLECTION MIXING METHOD

摘要

A hand-held pulse laser distance measuring device and a pulse reflection mixing method both having an algorithm which controls a microcontroller and which serves to calculate the distance to a measurement object by at least two different time differences tau₁₁, tau₁₂ between a measurement pulse and a reference pulse with a pulse width Deltat, which time differences tau₁₁, tau₁₂ are measured with a pulse repetition frequency f₁, f₂, respectively, wherein a selection module is provided which selects at least the first pulse repetition frequency f₁ from at least a first frequency set {f}₁ with at least one other pulse repetition frequency f_1i in such a way that the condition |tau₁₁.f_1i|>A >2.|Deltat₁₁.f_1i| is satisfied with a pre-selected lower limit A, a relative time difference |tau_1i.f_1i| and a relative pulse width |Deltat_lambda.f_1i|.