Method and device for implementing interference resistance of touch key

A key and interference detection technology, applied in the field of anti-interference of touch keys, can solve the problems of false triggering of touch keys, non-response of touch keys, deviation of sampling values ​​of touch keys, etc., to enhance adaptability, enhance anti-interference ability, and avoid key presses The effect of false trigger risk

Inactive Publication Date: 2017-05-10
HONGYANG HOME APPLIANCES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, under strong interference such as power grid voltage fluctuations or harsh working conditions of high temperature and high humidity (such as the working condition of a soymilk machine), the sampling value of the touch button may have a large deviation, which may cause the touch button to be falsely triggered or the touch button does not respond s consequence

Method used

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  • Method and device for implementing interference resistance of touch key
  • Method and device for implementing interference resistance of touch key
  • Method and device for implementing interference resistance of touch key

Examples

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example 1

[0042] In this example, a method for realizing anti-jamming of touch keys includes the following steps:

[0043] S301. After the system is powered on, determine the key value sampling channel for sampling the key value of the touch key, and the interference detection channel for sampling the interference signal;

[0044] Wherein, the system includes n sampling channels, and the system may be a dedicated touch chip, or a touch integrated circuit module integrated in a home appliance MCU (Microcontroller Unit, micro control unit), or it may be based on actual needs The built digital-analog sampling circuit;

[0045] Among the n sampling channels of the system, the m sampling channels are respectively connected to m touch keys for collecting the key values ​​of the touch keys; the remaining n-m sampling channels are not connected to the touch keys, and one or more channels are used Collect the value of the sampling port inside the system, and reflect whether there is an interfer...

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Abstract

The invention discloses a method and device for implementing interference resistance of a touch key. The method for implementing interference resistance of the touch key comprises the steps of: determining a key value sampling channel for sampling a key value of the touch key, and an interference detection channel for sampling an interference signal; and scanning the key value sampling channel and the interference detection channel, judging whether the interference signal is detected out according to a sampling value of the interference detection channel, when judging that no interference signal is detected out, judging whether the touch key is pressed down according to a sampling value of the key value sampling channel, and if yes, responding to a touch operation of the touch key. According to the technical scheme of the invention, interference resistance of the touch key can be reinforced, and a key false triggering risk is avoided.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a method and device for realizing anti-interference of touch keys. Background technique [0002] The application of touch buttons on electrical appliances is becoming more and more popular. In related technologies, the method for determining whether a touch key is pressed is generally to compare the difference between the current key value and a preset value. If the difference is within a preset range, it is determined that the current key is not pressed. If the difference exceeds the preset range, it is determined that the current button is pressed. [0003] However, under strong interference such as power grid voltage fluctuations or harsh working conditions of high temperature and high humidity (such as the working condition of a soymilk machine), the sampling value of the touch button may have a large deviation, which may cause the touch button to be falsely t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M11/20
CPCH03M11/20
Inventor 王旭宁窦小勇余青辉张小川
Owner HONGYANG HOME APPLIANCES
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