Excerpts
This report describes the design and the build with the laser distance measure that can measure distance is not more than 5 meters using the principle of measurement of the phase difference.15 MHz to the Laser Diode to the object you want to measure the side is a Vito diode light is reflected from the object to the measure by the light reflected back to the phase change will be available from the previous.How to find the different phases in a way can be very difficult to match the high frequency will be used to reduce the frequency of mixed up the frequency พาห์ circuit which will help you to find the part of the less complex phase
by mixing F frequency (the frequency พาห์ - kHz 1:14.999 MHz) on the frequency and mixed พาห์ F frequency with the frequency พาห์ reflecting back to a different phase, in which the frequency F this value is close to the frequency พาห์7 Segment by the circuits and integrated circuit receiver signals are phase-locked loop, help control the frequency of the need to provide a more accurate measurement of
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