Resolution method based on EC11 rotary encoder

The invention discloses a resolving method based on an EC11 rotary encoder, which relates to the technical field of EC11 rotary encoders, and comprises the following steps of: pre-calibrating the initial states of a port A and a port B of the rotary encoder to be high levels respectively, and setting the numerical value of the rotary encoder to be 0; acquiring a low-level signal of a port A, taking a level falling edge of the low-level signal as a timing starting signal, starting a timer, delaying to set time, and starting timing; detecting the level of the port B, detecting the level of the current port A and the level of the current port B, and determining the fault alarm state of the current rotary encoder. The EC11 rotary encoder is processed by adding filtering, timing detection and overtime detection, interference of external signals and circuit level signals of the EC11 rotary encoder is eliminated, the working state of the EC11 rotary encoder can be rapidly and effectively detected, the method has the