Laser distance measuring module with ADC error compensation by varying sampling times
A technology of laser distance measurement and sampling mode, which is applied in the directions of measuring devices, analog/digital conversion, electromagnetic wave re-radiation, etc., and can solve the problems of absolute distance deterioration
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[0066] Figure 1a and Figure 1b A pulsed time-of-flight principle such as is used in typical electro-optical ranging devices according to the prior art is illustrated.
[0067] Figure 1a A basic diagram of a prior art electro-optical distance measuring device 1 according to the pulse time-of-flight principle is shown. A transmitter 2 and a receiver 3 are arranged in the distance measuring device 1 . Transmitter 2 emits light pulses 4, which are again detected by receiver 3 after reflection or backscattering at the target (eg, a cooperating target object such as retroreflector 5 or a non-cooperating target object such as a natural surface). Backscattered light pulse 4'. Often a continuously modulated transmit signal can also be used instead of optical pulses.
[0068] like Figure 1b Schematically stated in , the distance according to the flight time T f It is determined as the time difference between the moment of initiation of the emission of the light pulse 4 and the ...
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