Abstract
The technology of frequency modulated continuous wave (FMCW) laser interferometer comes from optical interferometry technology, which has the characteristics of less than traditional interferometer devices, high precision, large range and anti-electromagnetic interference. Through in-depth research on the principle of FMCW measurement, taking full advantage of laser interference technology, and combining the features of anti-interference and easy installation of contact sensors, an innovative contact type long-range displacement sensor based on FMCW is proposed. The conversion of non-contact measurement to contact measurement can realize the direct measurement of workpieces with complex surface conditions on the production line, breaking through the limitation of optical measurement and expanding the application of optical fiber interferometry.
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