Abstract
This paper describes about the measuring system by using the signal field, which makes positive use of so called active sensing method, in particular about composing method of enclosing signal field and its application.
First, we proposed the method for composing optical enclosing signal field by linear LEDs, and considered the property of this field. It was found that its equiphase lines look like latticework, and that this is suitable for two dimensional position measurement. Next, we considered its application for position and attitude measurement on a plane. Furthermore, we presented practical flushing function realized by simple electric circuits and gave signal processing procedures. Taking above things into consideration, the experimental measuring system is composed. The experimental reasults are as follows.
(1) The range of position measurement is |x|, |y|≤50mm, and error is within ±2mm.
(2) The range of attitude measurement is |θ|≤25 degrees, and error is within ±3 degrees.
This study aims at application for automatically guided vehicles in factories and construction works.
