UWB Antenna Switching for Low-Power Mobile Gesture Recognition
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Solution Overview
Problem
Existing gesture recognition technologies in mobile terminals face challenges such as limited integration due to bulky components, high power consumption, and insufficient antenna aperture, which hinder effective gesture recognition.
Innovation Solution
A mobile terminal equipped with an Ultra Wide Band (UWB) chip, an antenna module, and a switchover module, which outputs UWB pulse signals, controls antenna switching for increased antenna aperture, and generates detection data for gesture recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional gesture recognition components are integrated into mobile terminals, then gesture recognition function is achieved, but device volume and power consumption increase
Solution Approach 1:
The UWB chip is designed to perform multiple functions: it can output UWB pulse signals for gesture recognition detection and also function as a communication chip for data transmission. This multi-functionality allows the system to achieve gesture recognition capabilities without adding dedicated separate components, thereby avoiding increased device volume.
Solution Approach 2:
The existing UWB chip in the mobile terminal is utilized for gesture recognition detection by configuring it to output UWB pulse signals. The system uses its own existing resources (the UWB chip) to perform the detection function, eliminating the need for external bulky components and reducing overall device volume.
2Adaptability or versatility
If traditional gesture recognition components are integrated into mobile terminals, then gesture recognition function is achieved, but power consumption increases
Solution Approach 1:
The UWB chip performs dual functions as both a communication chip and a detection chip for gesture recognition. By using the existing UWB chip for both purposes rather than adding separate dedicated detection components, the system avoids the additional power consumption that would result from multiple active components.
Solution Approach 2:
The system utilizes the existing UWB chip's capabilities for gesture recognition detection by configuring it to output pulse signals. This self-service approach leverages already-powered components rather than introducing new power-hungry detection hardware, thereby controlling power consumption.
3Measurement precision
If antenna aperture is increased for better gesture recognition, then detection accuracy improves, but device complexity increases
Solution Approach 1:
The antenna module is designed to serve dual purposes: it functions as both a communication antenna for UWB data transmission and as a detection antenna for emitting and receiving pulse signals for gesture recognition. This multi-functionality allows the system to achieve adequate detection capability using existing antenna infrastructure without adding complex dedicated detection antenna systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances the antenna aperture of mobile terminals, improving gesture recognition accuracy and reducing power consumption by efficiently utilizing existing UWB chip technology.
Implementation Method 1
a first target antenna configured to radiate the UWB pulse signals into space
Implementation Method 2
the echo signals refer to signals returned after the UWB pulse signals meet a target object in the space
Data Source
AI summary
A mobile terminal includes: a UWB chip, configured to output UWB pulse signals of a first preset quantity in a signal cycle and further configured to generate a frame of detection data on the basis of echo signals of signal cycles of a second preset quantity; a switchover module, configured to control an antenna module to be switched to a target antenna, in which the target antenna includes a first target antenna configured to radiate the UWB pulse signals into space and a second target antenna configured to receive echo signals; and a processor, configured to recognize a gesture on the basis of at least one frame of detection data.