Man-machine interaction method and system based on capacitance key

Abstract

The invention discloses a man-machine interaction method and system based on a capacitance key. The method comprises the following steps: acquiring a capacitance charging signal generated by touchingthe capacitance key by a finger of a user; processing the capacitance charging signal to extract a Mel-frequency cepstral coefficient characteristic; and inputting the Mel-frequency cepstral coefficient characteristic into a trained hidden Markov model, identifying the type of the finger, touching the capacitance key, of the user, and further realizing man-machine interaction according to an identification result. Key interaction is carried out by utilizing the capacitance charging signal generated by touching the capacitance key by different fingers, a problem that the capacitance keys are difficult to interact is solved, the Mel-frequency cepstral coefficient of the capacitance charging signal is used as features to train the hidden Markov chain model, and the recognition accuracy is improved.

Description

technical field [0001] The present invention relates to the technical field of human-computer interaction, and more specifically, to a method and system for human-computer interaction based on capacitive buttons. Background technique [0002] The traditional capacitive sensing button (or capacitive button for short) input is to use the finger to touch the button for input, but this input method can only detect whether the finger touches the button, but cannot detect which finger of the user touched the button. [0003] At present, some researchers detect which finger of the user touches the key by wearing an electromagnet on the user's finger, but this implementation requires the user to wear an electromagnet on the finger, resulting in increased use costs and reduced user experience. Contents of the invention [0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a human-computer interaction method and an in...

AI Technical Summary

Problems solved by technology

[0002] The traditional capacitive sensing button (or capacitive button for short) input is to use the finger to touch the button for input, but this input method can only detect whether the finger touches the button, but cannot detect which finger of the user touched the button

[0003] At present, some researchers detect which finger of the user touches the key by wearing an electromagnet on the user's finger, but this implementation requires the user to wear an electromagnet on the finger, resulting in increased use costs and reduced user experience

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