Full digital addition processing circuit for incremental photoelectric shaft-position encoder

An incremental photoelectric rotary encoder adding all-digital processing circuit, an all digital optoelectronic measurement belongs art circuit relates to the addition processing. The present invention is to solve the technical problem are: to provide an incremental optical shaft encoder adding all-digital processing circuit, the technical solution to solve the technical problem that the present invention comprises a photoelectric rotary encoder, a differential amplifier, a comparator integer circuit, the phase determination circuit, a counter, microcontroller, a / D converter; two encoder reading head mounted on the path, each reading head is output as a phase difference between each of the four quarter period sine signal, a first readhead differential amplifier output signal, the comparator shaping, the inversion sentence, a / D conversion, processing microcontroller, a first angle formed codes; output signal of the second reading head in the other way through the same process, formation of two angle code, the code of the first angle and the second angle adding the amount of digital codes, the value of the angle formed incremental optical shaft angle encoder.