Patent ID: 8912482
Filing Date: 2014-12-16
Classification: G06F

Abstract:
1. A position determining device for objects, comprising: a light emitting module; a first reflecting unit, being a long strip; a second reflecting unit, being a long strip; a mixed-type reflecting unit, comprising a stripped L-shaped reflecting mirror and a stripped retroreflector, said retroreflector being positioned above or below said reflecting mirror; wherein an approximately rectangular work area is formed to be surrounded by said mixed-type reflecting unit, said first reflecting unit and said second reflecting unit, said first and second reflecting units are respectively positioned at two side ends of said mixed-type reflecting unit, a contact of said first and second reflecting units is a corner of said work area being set as a reference point, a light beam of said light emitting module is emitted from said reference point to illuminate or scan said work area entirely; a light detecting unit, detecting a plurality of objects directly and indirectly blocking said light beam via said reflecting mirror to obtain a first signal respectively, and detecting said objects directly blocking said light beam via said retroreflector to obtain a second signal respectively, wherein said first signal comprises a plurality of first weak signals corresponding to said objects and said second signal comprises at least one second weak signal corresponding to said objects; a signal processing unit, electrically connected to said light detecting unit, processing said first signal and said second signal to obtain a plurality of included angles (A a microprocessor, electrically connected to said signal processing unit, arranging said included angles (A