Accuracy evaluation of two-dimensional straightness measurement method based on optical meter

Research on multi-sensor measurement system and evaluation method for roundness and straightness errors of deep-hole parts

“…The method adopts some equipment such as laser displacement sensor, capacitance sensor, and charge-coupled device (CCD) camera to obtain data information without touching the measured surface. For example, the diameter and roundness error measuring system was developed by Mekid and Vacharanukul [3] based on the corresponding relationship between displacement and light intensity; the cylindrical non-contact capacitance probe was used by Ma et al [4]; the deep-hole inner surface parameter comprehensive measurement device was designed by Akio et al [5], consisting of laser emitter, DC motor, measurement unit, and optical element for detecting posture; the adjustable five-dimensional measuring system was established by Ma et al [6]; the measuring device consisting of two high-resolution single-lens reflex cameras was proposed by Zatočilová et al [7]; additionally, the system designed by Jurevicius and Vekteris [8][9][10] was based on the phase difference coding of modulated optical signals emitted by two photodiodes. All of them are successful typical applications of non-contact mode in the field of shape error measurement and have been improved to varying degrees regarding measurement rationality and accuracy.…”