Ultrasonic focus based haptic feedback system and method

A tactile feedback and ultrasonic technology, applied in the input/output process of data processing, instruments, electrical digital data processing and other directions, can solve the problems of inconvenient operation, small scope of action, single-point feedback, etc. Effect

Active Publication Date: 2016-03-23
JILIN UNIV
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  • Application Information

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Problems solved by technology

[0007] The invention provides a tactile feedback system and method based on ultrasonic focusing to solve the problems of small range of action, inconvenient operation, and single-point feedback in existing tactile feedback systems. It has h

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  • Ultrasonic focus based haptic feedback system and method
  • Ultrasonic focus based haptic feedback system and method

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Embodiment Construction

[0049] The present invention provides a tactile feedback system based on ultrasonic focusing, including: ultrasonic sensor array 101, hand position scanning circuit 102, main control circuit 103 and four parts of sensor array 104, wherein the components and functions of each part are as follows:

[0050] (1) Ultrasonic sensor array 101

[0051] The present invention utilizes the ultrasonic sensor array 101 to transmit and receive ultrasonic waves to realize hand position detection and ultrasonic focusing. Hand position scanning and ultrasonic focusing share an ultrasonic sensor array. Pulse waveform, and receive the signal reflected by the hand, use the signals sent and received by multiple ultrasonic sensors to realize the precise positioning of the hand position, the ultrasonic focusing function sends the modulated waveform, which can be AM, PM modulated, modulated The signal needs power amplification, and the transmitted power is relatively large;

[0052] The basic princi...

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Abstract

The invention relates to an ultrasonic focus based haptic feedback system and method, and belongs to the field of haptic feedback. The system comprises a main control circuit, a hand position scanning circuit, a sensor array focus circuit and an ultrasonic sensor array. A hand position is obtained in a scanning mode by utilizing the ultrasonic array; a system determines ultrasonic focus points according to the hand position and calculates time delay of emitting ultrasonic waves by each sensor of the array to control a moment of emitting an ultrasonic signal by each sensor, thereby realizing the focus of the ultrasonic array; sound emission force is generated and acts on the hand skin to generate a haptic feeling; and the system needs to use a hand skin sensitive frequency to modulate an ultrasonic resonant frequency to generate an ultrasonic focus signal. According to the haptic feedback system and method, the scanning and haptic feedback of the hand position are realized through the same ultrasonic array, and a non-contact haptic feedback function in a three-dimensional space can be realized.

Description

technical field [0001] The present invention relates to a tactile feedback system and method, in particular to a tactile feedback system based on ultrasonic array focusing technology. The ultrasonic array obtains the position of the hand through scanning, and generates ultrasonic focus at the hand position by controlling the driving signal of the ultrasonic array. Acoustic emission force is formed, and the force acts on human hands to generate tactile sensation. The invention can be used in the fields of human-computer interaction, tactile interaction, three-dimensional image and video interactive control, and the like. Background technique [0002] For many years, people in the field of human-computer interaction mainly focus on vision and hearing, while ignoring other sensory modalities. With the dramatic improvement of computer performance, the limitations of computer interaction methods have become more and more prominent, and the research and application of other sensor...

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Application Information

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IPC IPC(8): G06F3/043
CPCG06F3/043
Inventor 陈建孙晓颖林琳王波燕学智温泉
Owner JILIN UNIV
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