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Refrigerator controller touch button sampling method

A controller and key technology, applied in the field of refrigerator controller touch key sampling, can solve the problems of insufficient touch key sensitivity and false triggering, etc., and achieve the effect of improving sensitivity and preventing false triggering phenomenon.

Active Publication Date: 2013-04-24
WUXI HODGEN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Such a touch button sampling method leads to insufficient sensitivity when the touch button is operated, and there is a phenomenon of false triggering

Method used

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  • Refrigerator controller touch button sampling method
  • Refrigerator controller touch button sampling method
  • Refrigerator controller touch button sampling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as figure 1 Shown is a schematic diagram of the main program flow of the touch button. For the method of timing counting, its main steps are the following two parts: the first part is the initialization of the system; the second part is clearing the watchdog and opening the timer 0 interrupt. The second part is the prior art.

[0031] For the method of system initialization in the first part above, such as figure 2 As shown, it is a schematic diagram of the initialization process of the touch key system, which mainly includes the following steps:

[0032] 1. Port initialization;

[0033] 2. Set the reference level of the comparator;

[0034] 3. Timer 0 sets the timing interrupt time to 2ms;

[0035] 4. Timer 1 is set as a counter.

[0036] The first, second, and fourth steps in the above-mentioned four steps are prior art, for the processing program steps of the timer 0 involved in the third step, such as image 3 Shown is a schematic diagram of the touch b...

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PUM

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Abstract

The invention discloses a refrigerator controller touch button sampling method, comprising steps of system initialization and main program entering. System initialization comprises four steps: initializing a port, setting a reference level of a comparator, setting a timing interruption interval by a timer 0, and setting a timer 1 to be a counter, wherein a processing program of arranging a timinginterruption interval by the timer 0 comprises: determining if the time interval reaches 2ms, carrying out button sampling, determining if the time interval reaches 5s, self-repairing subprogram and carrying out button output. A calculating procedure of the button sampling is combined with IIRfilter algorithm to calculate counter value of each button. The refrigerator controller touch button sampling method can improves sensitivity in touch button operation, preventing spurious triggering.

Description

technical field [0001] The invention relates to the field of keys of a refrigerator controller, in particular to a method for sampling touch keys of a refrigerator controller. Background technique [0002] Refrigerators have become more and more popular in our daily life, but most of the keys of existing refrigerators are mechanical keys, which are easy to wear and have a short life. And another kind of button, that is, the touch button, as a new type of button technology, is becoming more and more mature. Its biggest advantages are long life and fast response, and it has been more and more used in home appliances. [0003] At present, most touch buttons use A / D sampling or timing counting method. When using timing counting method, the average method is often used in the calculation of button sampling, combined with the percentage setting method to detect whether a key is pressed or released. [0004] Such a touch button sampling method leads to insufficient sensitivity whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/96
Inventor 李年明
Owner WUXI HODGEN TECH CO LTD