Capacitive touch key detection method and device
A detection method and detection device technology, applied in the direction of electrical components, electronic switches, pulse technology, etc., can solve the problems of many faults and low detection efficiency of touch keys
Active Publication Date: 2021-01-29
ZHUHAI GREE INTELLIGENT EQUIP CO LTD +1
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Problems solved by technology
[0004] Embodiments of the present invention provide a detection method and device for a capacitive touch key, so as to at least solve the technical problems of low efficiency and many faults in the related art of detecting whether the touch key is effective
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[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0025] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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The invention discloses a detection method and device for a capacitive touch key. Wherein, the method includes: obtaining the level change frequency of the capacitor plate to be detected when charging and discharging, wherein the capacitor plate to be detected includes a first capacitor plate and a second capacitor plate; judging whether the level change frequency is consistent with the predetermined Assume that the level change frequency is the same; when it is judged that the level change frequency is the same as the preset level change frequency, it is determined that the first capacitor plate is connected to the second capacitor plate, wherein the first capacitor plate and the second capacitor plate are connected When the capacitive plates are connected, it means that the capacitive touch key is pressed; when it is judged that the level change frequency is different from the preset level change frequency, it is determined that the first capacitive plate and the second capacitive plate are disconnected. The invention solves the technical problems of low efficiency and many faults in detecting whether the touch key is effective or not in the related art.
Description
technical field [0001] The invention relates to the technical field of circuit signal processing, in particular to a detection method and device for a capacitive touch key. Background technique [0002] In related technologies, touch button technology is used more and more widely. Before the product leaves the factory, it is generally necessary to test whether the buttons on the circuit board are touched effectively. Therefore, it is necessary to test and determine whether the buttons on the circuit board are touched. The method of whether it is effective or not is generally through manual detection or conductive pen detection. However, in manual detection, it is through human touch to judge whether the touch button is effective. This method has low efficiency, high false positive rate, high cost, and is relatively backward; The other is mechanically using a conductive pen to click on the touch button. This method can realize automatic touch, but there are defects such as hi...
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IPC IPC(8): H03K17/96
Inventor 宋明岑郭鹏黄鸿发庞彬赵志伟沈显东
Owner ZHUHAI GREE INTELLIGENT EQUIP CO LTD