Title :
Encoding characteristics of a 2 channel optical motion detector
Author :
Chin, Teoh Boon ; Saibon, Basir ; Zulkifli, Tun Zainal Azni ; Aziz, Z.A.A.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. Sains Malaysia, Malaysia
Abstract :
This paper presents the design of front-end modules of a converter of an optical encoder and its key characteristics to detect motion in linear or rotary movement. There are four modules in this design that include logarithm amplifier, antilog converter, current comparator and voltage buffer. Every module is analyzed separately at early stage and finally a complete converter circuit is successfully designed and analyzed to produce desired output encoding and electrical characteristics within 90 e phase different between 2 channels (Bhatti, 1997).
Keywords :
amplifiers; buffer circuits; convertors; current comparators; encoding; motion measurement; optical sensors; antilog converter; converter circuit; current comparator; electrical characteristics; encoding characteristics; front-end modules; logarithm amplifier; motion detection; optical encoder; optical motion detector; output encoding; voltage buffer; Capacitors; Circuits; Mirrors; Motion detection; Optical amplifiers; Optical buffering; Optical detectors; Optical sensors; Optical signal processing; Voltage;
Conference_Titel :
Semiconductor Electronics, 2004. ICSE 2004. IEEE International Conference on
Print_ISBN :
0-7803-8658-2
DOI :
10.1109/SMELEC.2004.1620923
