Processing method for implementation of capacitive touchpad high-resolution output on low-end single-chip microcomputer

Abstract

The invention discloses a processing method for implementation of capacitive touchpad high-resolution output on a low-end single-chip microcomputer. The low-end single-chip microcomputer comprises a master control single-chip microcomputer module MCU (micro control unit), a self-checking capacitive sensing module and a capacitive touchpad. The master control single-chip microcomputer module controls the self-checking capacitive sensing module to obtain source data acquired by the self-checking capacitive sensing module from the capacitive touchpad, then the source data are subjected to touch position computing by the master control single-chip microcomputer module to obtain an original coordinate of a touch point, and the coordinate position of a highly-optimized program can be obtained by optimizing computation processing. The invention further provides a capacitive touch control device and a remote control using the capacitive touch control device. Electronic devices of the low-end single-chip microcomputer are combined with the capacitive touchpad, computing capacity of the low-end single-chip microcomputer is fully used, data processing efficiency is improved, and accordingly capacitive touchpad high-resolution output on the low-end single-chip microcomputer can be implemented.

Description

technical field [0001] The invention relates to a data processing method of a touch panel, in particular to a processing method for realizing high-resolution output of a capacitive touch panel on a low-end single-chip microcomputer device. Background technique [0002] The working principle of the capacitive touch panel: the capacitive sensing plate is an electrode with a small area (the electrode plate can be square, triangular, circular, etc.), and this electrode is connected to the capacitive sensing channel of the capacitive sensing module with a wire, so that, The electrodes of this small area form a low-voltage electric field in the conductor; when touching or approaching the capacitive sensing board, due to the electric field of the human body, a coupling capacitance will be formed between the finger and the conductor layer, so the capacitive sensing board (electrode) and the capacitive sensing module There is a current flow between the capacitive sensing channels, an...

AI Technical Summary

Problems solved by technology

The price of such single-chip microcomputer chips is generally more expensive, and its power consumption is also higher, which not only increases the manufacturing cost, but also requires a high-performance supporting power supply module. The equipment is only limited to high-end application equipment of some big manufacturers

Therefore, it is not suitable for the use of capacitive touch panels on embedded devices with ultra-low power consumption (current consumption of tens of microamperes (uA) or even several microamperes), such as remote controls

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