关键词: 莫尔条纹, 细分和辨向, VHDL, Mealy状态机, 脉冲干扰

Abstract:

This article describes a way of Moore stripes subdivision and the differentiation of direction based on the Mealy state machine and described by the VHDL language.By this method,the state machine judges the change of the grating signal of the pre-processed circuit and then outputs the count pulse and direction signal.By an improved counting method the effect of the peak interference pulse on the count is avoided and the accuracy of the subdivision and counting is improved.

Key words: moore stripes;subdivide with differentiation toward;VHDL;Mealy state machine;pulse interference