Method and system for automatically calibrating sensitivity of touch detection, and touch control terminal

Abstract

The invention is suitable for the technical field of touch control and provides a method and a system for automatically calibrating the sensitivity of touch detection, and a touch control terminal. The method comprises the following steps: step a, obtaining a touch signal on a current channel detected by a sensor; step b, judging whether the sensitivity is needed to be adjusted according to a parameter value and a reference value of the touch signal, wherein the reference value is related to the parameter value of the sensor in a steady state without touch; and step c, when the judgment which indicates that the sensitivity needs to be adjusted is made, adjusting a difference value between the parameter value and the reference value of the touch signal. In the invention, dynamic calibration of the sensitivity is realized by detecting the parameter value and the reference value of the touch signal, judging the parameter value and the reference value of the touch signal and duly adjusting the difference value between the parameter value and the reference value of the touch signal according to the change of external touch, so the correctness and the linearity of a detection output position are ensured and the problem of sensitivity caused by the differences of deviation, individual operation habit, system environment and the like in a manufacturing process is solved.

Description

technical field [0001] The invention belongs to the field of touch technology, and in particular relates to an automatic calibration method, system and touch terminal for touch detection sensitivity. Background technique [0002] At present, touch detection input devices have been widely used in personal PCs, mobile phones, personal digital assistants (PDAs), multimedia handheld devices, and household appliances, and are an important input device for human-machine interfaces. When applying capacitive touch detection equipment to specific products, in order to detect the touch action and the position of the touch point normally, it is necessary to set a set of sensitivity parameters according to the thickness of the covering layer on the touch sensor and the size of the sensor. . In actual production, due to the inconsistency of the sensor and the inconsistency of the equipment assembly, there will be a certain deviation between the sensitivity and the preset parameters, whi...

AI Technical Summary

Problems solved by technology

In actual production, due to the inconsistency of the sensor and the inconsistency of the equipment assembly, there will be a certain deviation between the sensitivity and the preset parameters, which will affect the linearity or sensitivity of the detection; after the product is generated, different user characteristics will be The signal detected by the device has a certain deviation, such as the thickness of the user's finger, the weight of the press, whether wearing gloves, etc., will affect the accuracy and linearity of the detection output position

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