正在加载图片...
in Laser Displacement sensors sensor Records displacement directly x()→>X(s) via slant range measurement TVDC cal Settings 1: 2um-60 ms II: 15um-2ms target l:50m0.15ms0 Resolution tradeoff patlal vs temporal Distance x is recorded via triangulation . 7 between the laser diode(emitter), the target and the receiver range. (position sensitive device -PSD) Advantages Vibrometers include advanced processing contact-free measurement and scanning capabilities Disadvantages Manufacturers: Keyence, MTI Instruments need reflective, flat target limited resolution 1 g 16.810(16682) Massachusetts Institute of Technology Ui/DVHU'LVSODFHPHQW6HQVRUV 5HFRUGVGLVSODFHPHQWGLUHFWO\ GLVSODFHPHQWGLUHFWO\ YLDVODQW UDQJH YLDVODQWUDQJHPHDVXUHPHQW WDUJHW [W ; V → 9RXW [>P@ >9'&@ 'LVWDQFH[LVUHFRUGHGYLDWULDQJXODWLRQ EHWZHHQWKHODVHUGLRGH HPLWWHU WKH WDUJHWDQGWKHUHFHLYHU [ VHQVRU &/ UDQJH 7\SLFDO6HWWLQJV , µPPV ,, µPPV ,,, µPPV 5HVROXWLRQWUDGHRII VSDWLDOYVWHPSRUDO SRVLWLRQVHQVLWLYHGHYLFH 36' $GYDQWDJHV 9LEURPHWHUVLQFOXGHDGYDQFHGSURFHVVLQJ FRQWDFWIUHHPHDVXUHPHQW DQGVFDQQLQJFDSDELOLWLHV 'LVDGYDQWDJHV 0DQXIDFWXUHUV .H\HQFH07,,QVWUXPHQWV QHHGUHIOHFWLYHIODWWDUJHW OLPLWHGUHVROXWLRQa µP