Gesture recognition method and system based on portable intelligent device and ultrasonic signal
A smart device and ultrasonic signal technology, applied in the information field, can solve problems such as the inconvenience of touching the screen, poor experience, and greater impact on accuracy, and achieve the effects of enhancing interactive experience, broad prospects, and saving hardware costs
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[0031] Example: see Figure 1-2 , the present invention provides a technical solution: a gesture recognition method based on portable smart devices and ultrasonic signals, the specific steps are as follows:
[0032] S1: Ultrasonic transmission of specific frequency: Use software on the smart terminal device to realize the free designation of the ultrasonic frequency to be transmitted, and the hardware device for transmission uses the speaker or speaker array on the smart phone;
[0033] S2: Reception and near-field attenuation mechanism of specific frequency ultrasound: the reception of ultrasound is realized by the microphone or microphone array that comes with the smartphone, and the collected ultrasound is the ultrasonic signal emitted by the human gesture. Accuracy, to reduce the interference of surrounding objects, using the near-field attenuation mechanism to effectively attenuate echo signals beyond the specified range, to ensure that only gestures within the specified ...
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