02976nas|a2200397 i 4500 20260818090649.0 150799s1998 th uzm rtt 00| a1eng d .b11754990 AIT Thesis no. ISE-98-27 Viraphan Samadi Development of a laser range finder for manufacturing control Bangkok : Asian Institute of Technology, 1998 126 p. Thesis ; no. ISE-98-27 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies Thesis (M.Eng.) - Asian Institute of Technology, 1998 In this study a Laser Range Finder (LRF) was developed and a mathematical relation was estab lished between object distance and PSD (Position Sensitive Detector) voltage output. LRF is a single point optical triangulation instrument, which provides distance information quickly and easily without touching the object being measured. This kind of instrument is available in today's market. But it is limited to a short range (max. range about 400 millimeters). And the nonlinearity is inherent in this kind ofinstrument, resulting the accuracy and resolution are chang ing nonlinearly with the distance. As distance of the object being measured increase as the accu racy and resolution decrease. The LRF was developed to achieve longer operation range (one meter or more). To improve the instrument accuracy and resolution at long range, multi mode measurement scheme was introduced and implemented. This method simply magnifies the PSD output voltage at long range before feeding it to ADC (analog to digital converter). This method showed the ability to make the resolution finer considerably depending on the number of mode being used. Process control Manukid Parnichkun, Chairperson Pandey, P.C., Examination committee Afzulpurkar, Nitin V., Examination Committee Asian Institute of Technology. Thesis ; no. ISE-98-27 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B13271 .b11754990 mnait y 240418 0 990715 m a y 0 mnait mnait mnarc 20 40 Barcode : 30050120845465 CREATED : 1999-07-15 RECORD # : i1214244x LPATRON : 1018555 LCHKIN : 2007-03-06 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050120845457 CREATED : 1999-07-15 RECORD # : i12142451 LPATRON : 1015888 LCHKIN : 2004-05-01 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050160098777 CREATED : 2016-04-28 RECORD # : i12961371 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 28802 28802 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. ISE-98-27 30050120845465 2026-08-18 09:06:49 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. ISE-98-27 30050120845457 2026-08-18 09:06:49 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. ISE-98-27 30050160098777 2026-08-18 09:06:49 1 2026-08-18 40