Touch detection and feedback system and method

Abstract

The invention discloses a touch detection and feedback system and method. The system comprises a shell, an ultrasonic transmitting end, an ultrasonic receiving end, a feedback output element and a main control unit, a mounting cavity is formed in the shell, and the mounting cavity is a closed space; the ultrasonic transmitting end, the ultrasonic receiving end and the feedback output element are all arranged in the mounting cavity; the ultrasonic transmitting end, the ultrasonic receiving end and the feedback output element are electrically connected with the main control unit respectively. The problem of mistaken touch of a capacitive key and the risk that the sensitivity of a piezoelectric key is reduced and even fails due to the fact that the piezoelectric key is limited by deformation factors are solved, recognition of various touch operations such as no touch, light touch and pressing is achieved, and multi-stage feedback signals aiming at different touch force can be output; and the influence of the vibration feedback element on the touch detection element is reduced through a method that the touch detection and the vibration feedback are not carried out at the same time.

Description

technical field [0001] The invention relates to the technical field of touch detection, in particular to a touch detection and feedback system and method. Background technique [0002] At present, the touch detection solutions on the market are mainly capacitive touch solutions. Pressure-sensitive button technology is gradually infiltrating and replacing capacitive touch solutions. The main improvement direction is to avoid the risk of false touch and enhance user experience. However, one disadvantage of the pressure-sensitive button technology is that a certain deformation must be generated on the shell to be transmitted to the pressure sensor to produce a change in resistance or inductance. For some application scenarios of metal shells, due to the small deformation, it will There is a risk of reduced sensitivity or even failure. Contents of the invention [0003] By providing a touch detection and feedback system and method, the present invention solves the problem of ...

AI Technical Summary

Problems solved by technology

[0003] By providing a touch detection and feedback system and method, the present invention solves the problem of false touches of capacitive keys and the risk of reduced sensitivity or even failure of piezoelectric keys due to deformation factors, and realizes touchless, light Recognition of various touch operations such as touch and press, and can output multi-level feedback signals for different touch strengths, and reduce the impact of vibration feedback components on touch detection components by not performing touch detection and vibration feedback at the same time

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