Refrigerator controller touch button sampling method

A controller and button technology, which is applied in the field of touch button sampling of refrigerator controllers, can solve problems such as false triggering and insufficient sensitivity of touch buttons, and achieve the effects of preventing false triggering and improving sensitivity

Active Publication Date: 2011-09-14
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. Another kind of button, ie touch button, is a new type of button technology, and its 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 to calculate the sampling of the button, and then combined with the percentage setting method to detect whether the key is pressed or released. [0004] Such a touch button sampling method leads to insufficie...

Claims

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Application Information

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