Method and device for processing output of rotation encoder switch

Abstract

The invention discloses a method and device for processing output of a rotation coding switch. The method for processing output of the rotation coding switch is characterized by comprising steps of scanning an A signal and a B signal of the rotation coding switch, switching the state value of the rotation coding switch to a stable right rotation preparation state or a stable left rotation preparation state if that the A signal is a low level and the B signal is the high level are continuously scanned for n times or that the A signal is the high level and the B signal is the low level are scanned for n times, and correspondingly determining that the rotation coding switch enters the right rotation state or the left rotation state and retuning the right rotation key value or the right rotation value if that the A signal and the B signal are low levels is continuously scanned for n times in the stable right rotation preparation state or the stable left rotation preparation state. The schemes of the method and device for processing output of the rotation coding switch can prevent a key-jumping phenomenon due to interference during the process of rotating the rotation coding switch.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method and device for processing the output of a rotary encoding switch. Background technique [0002] In electrical products, in order to adjust certain parameters of electrical appliances, such as temperature parameters of air conditioners, wind speed parameters of fans, fog volume parameters of humidifiers, equipment / sound frequencies, etc., rotary coding switches are often used. Rotary encoder switches, also known as small rotary encoders, refer to switching electronic components with a set of regular and strict timing pulses. Usually, they can be divided into mechanical rotary encoder switches and photoelectric rotary encoder switches according to their structure. [0003] For example, the Chinese invention patent application with the application number CN201210328987.0 discloses a method, a system and a vehicle for zooming a navigation map based on an encoding switch....

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes in view of the above defects of the prior art, and provides a device and method for processing the output of a rotary encoding switch, so as to control the rotary encoding switch through software, and solve the abnormality caused by the noise signal during input, that is, key skipping The problem of phenomena

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