Method for realizing annular touch of capacitive touch key

A capacitive, button technology, applied in electrical components, electronic switches, pulse technology, etc., can solve the problems of increased development and maintenance costs, uneven location distribution, lack of flexibility, etc., to achieve simple and reliable processing, high flexibility, The effect of reducing the overall cost

Pending Publication Date: 2021-09-24
四川中微芯成科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, the realization of circular touch relies on the hardware design with high matching requirements, and there is also the problem of uneven distribution of positions, which makes the development process inflexible and increases development and maintenance costs

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  • Method for realizing annular touch of capacitive touch key
  • Method for realizing annular touch of capacitive touch key
  • Method for realizing annular touch of capacitive touch key

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] Such as figure 1 As shown, in one embodiment, the present invention pr...

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Abstract

The invention provides a method for realizing annular touch by a capacitive touch key, which comprises the steps of respectively acquiring key value variation corresponding to at least three touch keys distributed in an annular array, and if any key value variation meets a preset requirement, considering that touch exists; determining any two key value variable quantities as a first target key value variable quantity and a second target key value variable quantity respectively; according to the size relationship between the first target key value variation and the second target key value variation, determining the ratio of the first distance to the second distance to obtain a key value ratio, wherein the first distance and the second distance are distances from the touch point to a touch key corresponding to the first target key value variation and from the touch point to a touch key corresponding to the second target key value variation respectively; and obtaining position information of the touch point according to the key value proportion. The distance relation between the touch point and the touch key is judged according to the key value variation, and then position information is determined; the treatment process is simple and reliable, the flexibility is high, and the comprehensive cost is reduced.

Description

technical field [0001] The invention relates to the technical field of capacitive touch, in particular to a method for realizing circular touch of a capacitive touch button. Background technique [0002] With the increasing popularity of capacitive touch buttons on household appliances and other electronic products, more and more users operate electronic products through capacitive touch buttons to enjoy the convenience brought by capacitive touch buttons to life. Capacitive touch buttons mainly use human body The self-contained capacitor will change the capacitance on the button, and determine whether the touch is triggered by detecting the change in the charge of the capacitor or the change in voltage and current caused by the change in capacitance. With the deepening of the application, in order to replace the mechanical knob, the ring touch button appears. [0003] However, in the prior art, the implementation of circular touch relies on hardware design with high matchi...

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Application Information

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IPC IPC(8): H03K17/96
CPCH03K17/962H03K2217/96071
Inventor 朱栩钟成保苗小雨李振华周彦杨勇陈晓
Owner 四川中微芯成科技有限公司
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