Man-machine interaction system and method based on capacitive touch screen

Abstract

The invention discloses a man-machine interaction method and system based on a capacitive touch screen. The method comprises the following steps: acquiring a capacitance change signal generated when afinger touches the capacitive touch screen by using electronic equipment with the capacitive touch screen; extracting an effective part of the capacitance change signal, wherein the effective part represents capacitance signal changes between a starting point and an end point of the capacitive screen touched by a finger; for the effective part of the capacitance change signal, extracting a Mel-frequency cepstral coefficient according to an identification degree of touch induction; taking the Mel-frequency cepstral coefficient as an input feature of a trained hidden Markov model to identify afinger type of the touch capacitive touch screen; and controlling a screen interaction function of the electronic equipment according to a set association relationship between the finger type and thetouch screen function. According to the invention, the input of different fingers of the capacitive touch screen can be accurately identified so that a man-machine interaction function of the electronic equipment is expanded.

Description

technical field [0001] The present invention relates to the technical field of human-computer interaction, and more specifically, to a human-computer interaction system and an interaction method based on a capacitive touch screen. Background technique [0002] The traditional capacitive touch screen input uses fingers to touch the screen for input, but this input method can only detect whether the finger touches the screen, but cannot detect which finger of the user touches the screen. [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 use 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 system and interaction method based o...

AI Technical Summary

Problems solved by technology

[0002] The traditional capacitive touch screen input is to use the finger to touch the screen for input, but this input method can only detect whether the finger touches the screen, but cannot detect which finger of the user touches the screen

[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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