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Intelligent electromagnetic metasurface controlled by voice recognition

A speech recognition and electromagnetic super technology, applied in speech recognition, speech analysis, electrical components, etc., can solve the problems of fixed functions and limited working bandwidth, and achieve the effects of improving efficiency, self-adaptive intelligent control, and large volume

Pending Publication Date: 2022-03-11
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for passive metasurfaces, once the processing is completed, its functions cannot be changed, and people have gradually realized the limitations of passive metasurfaces in practical applications, such as limited operating bandwidth, fixed functions, etc.

Method used

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  • Intelligent electromagnetic metasurface controlled by voice recognition
  • Intelligent electromagnetic metasurface controlled by voice recognition
  • Intelligent electromagnetic metasurface controlled by voice recognition

Examples

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Embodiment 1

[0052] see Figure 1-Figure 12 , the present embodiment provides a smart electromagnetic metasurface controlled by voice recognition, wherein, figure 1 It is a schematic diagram of the principle of the metasurface, which is composed of a digital programmable metasurface 1 and a voice control system 2.

[0053] In order to realize the digitally programmable metasurface 1, this embodiment integrates a varactor diode 1115 on the metasurface. By changing the reverse bias voltage applied across the varactor diode 1115, the reflection phase of the active unit 111 can be dynamically changed. The digitally programmable metasurface is composed of 6×6 super subunits 11. All active units 111 in the same super subunit 11 share the same reverse bias voltage, and each super subunit 11 can be controlled by independent control.

[0054] The voice control system 2 is made up of a voice recognition module 21, a computer 22 and a digital-to-analog conversion circuit 23 (DAC). When sending a v...

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Abstract

The invention discloses an intelligent electromagnetic metasurface controlled by voice recognition, which comprises a digital programmable metasurface and a voice control system, and is characterized in that the voice control system comprises a voice recognition module, a computer and a digital-to-analog conversion circuit; wherein the voice recognition module obtains a recognition voice instruction, processes the recognition voice instruction to form corresponding serial port data and then sends the serial port data to the computer, and the computer receives and converts the serial port data into a format which can be processed by the digital-to-analog conversion circuit and then sends the serial port data to the digital-to-analog conversion circuit. The digital-to-analog conversion circuit generates a corresponding voltage sequence to control the digital programmable metasurface; the function of the digital programmable metasurface is regulated and controlled in real time through voice signals, the functions of wide beams, RCS reduction, vortex waves, beam splitting and the like can be effectively achieved, meanwhile, non-contact intelligent regulation and control are achieved, and wide application prospects are achieved in the aspect of acoustics and electromagnetic fusion communication.

Description

technical field [0001] The invention relates to the technical field of intelligent electromagnetic metasurface, in particular to an intelligent electromagnetic metasurface controlled by voice recognition. Background technique [0002] In the past decade, metasurfaces have attracted extensive attention due to their powerful ability to control electromagnetic waves. A metasurface is a two-dimensional artificial structure composed of periodic or aperiodic subwavelength units. Compared with traditional metamaterials, metasurfaces have the advantages of ultrathinness, low loss, and easy integration. However, for passive metasurfaces, once processed, their functions cannot be changed, and people have gradually realized the limitations of passive metasurfaces in practical applications, such as limited operating bandwidth and fixed functions. Recently, research on active metasurfaces has been increasing. Active metasurfaces can realize the dynamic control of parameters such as fre...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q23/00G10L15/22
CPCH01Q15/0086H01Q15/002H01Q23/00H01Q15/0046G10L15/22G10L2015/223
Inventor 蒋卫祥柏林刘元可崔铁军
Owner SOUTHEAST UNIV
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