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Contact detection method and system and touch device

A technology of contact detection and contact action, applied in measuring devices, using electrical devices, measuring ultrasonic/sonic waves/infrasonic waves, etc., can solve problems such as being susceptible to interference from the external environment, poor stability of elastic wave signals, and unfavorable contact detection accuracy.

Pending Publication Date: 2021-11-19
BEIJING TAIFANG TECH CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The use of piezoelectric sensors can reduce the size of the touch device, but the elastic wave signal generated by the touch device due to touch has poor stability and is easily disturbed by the external environment, which is not conducive to the accuracy of contact detection.

Method used

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  • Contact detection method and system and touch device
  • Contact detection method and system and touch device
  • Contact detection method and system and touch device

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Embodiment Construction

[0026] This application describes a number of embodiments, but the description is exemplary rather than restrictive, and it will be apparent to those of ordinary skill in the art that within the scope of the embodiments described in this application can be There are many more examples and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Unless expressly limited, any feature or element of any embodiment may be used in combination with, or may be substituted for, any other feature or element of any other embodiment.

[0027] This application includes and contemplates combinations with features and elements known to those of ordinary skill in the art. The embodiments, features and elements that have been disclosed in this application can also be combined with any conventional features or elements to form unique inventive solutions a...

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Abstract

The invention discloses a contact detection method and system and a touch device. The method comprises the steps of taking a first elastic wave sensor arranged on the device as an excitation source to drive the device to vibrate to generate an elastic wave signal; detecting an elastic wave signal transmitted in the device through a second elastic wave sensor arranged on the device; comparing the difference between the detected elastic wave signal and a preset elastic wave signal, judging whether the contact action on the device occurs or not according to the difference, wherein the preset elastic wave signal is a signal generated when the first elastic wave sensor drives the device to vibrate under the condition that the first elastic wave sensor does not make contact with the device.

Description

technical field [0001] This article relates to touch technology, especially to a touch detection method, system and touch device. Background technique [0002] With the continuous development of science and technology, touch devices have gradually entered various fields of people's lives, such as touch mobile phones, touch computers, and touch car steering wheels. At present, in order to realize the touch function on the device, the commonly used technical solutions for contact detection include: [0003] The strain gauge sensor is used for contact detection; the deformation caused by the object touching the touch device can be detected by the strain gauge sensor through the cantilever beam structure, and then the contact action is detected according to the deformation amount. The strain-gauge sensor requires a cantilever beam structure and occupies a large volume, resulting in a large and bulky touch device, and the overall cost is relatively high, which is contrary to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G01H11/08
CPCG06F3/0414G01H11/08
Inventor 不公告发明人
Owner BEIJING TAIFANG TECH CO LTD
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