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ZigBee technology-based wireless full-duplex real-time voice transmission device and method

A real-time voice and transmission device technology, applied in voice analysis, wireless communication, duplex signal operation, etc., can solve the problem of not being able to provide full-duplex real-time voice communication functions, and achieve improved voice call quality, great practical value, elimination of The effect of misunderstanding

Inactive Publication Date: 2012-11-21
HEFEI UNIV OF TECH
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  • Abstract
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Problems solved by technology

But this method is also a one-way non-real-time transmission scheme, which cannot provide full-duplex real-time voice communication function

Method used

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  • ZigBee technology-based wireless full-duplex real-time voice transmission device and method
  • ZigBee technology-based wireless full-duplex real-time voice transmission device and method

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Embodiment Construction

[0035] see figure 1 , figure 2 , the structural setting of the wireless full-duplex real-time voice transmission device based on ZigBee technology in the present embodiment comprises two identical equivalent devices A and device B, and the structural settings of device A and device B are:

[0036] An electret microphone, which converts the sound signal into an analog voltage signal;

[0037] An electrodynamic loudspeaker that converts a voltage signal into an audio signal;

[0038] A speech processing circuit is a circuit composed of a speech codec chip including a speech collection unit and a speech playback unit and its peripheral components. The speech collection unit receives an analog voltage signal output by an electret microphone, and passes the speech codec chip The internal analog-to-digital converter converts it into a digital voice signal and transmits it to the embedded microcontroller circuit; at the same time, it also receives the digital voice signal output b...

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Abstract

The invention discloses a ZigBee technology-based wireless full-duplex real-time voice transmission device and method. The device is characterized by comprising a device A and a device B, which are same and on an equal footing, wherein the device A, as well as the device B, adopts the structure that voice signals are converted into analog voltage signals through an electret microphone; voltage signals are converted into the voice signals through an electrodynamic loudspeaker; a voice processing circuit converts the analog voltage signals output by the electret microphone into digital signals which are then sent to an embedded microcontroller circuit, and, at the same time, also receives and converts the digital voice signals output by the embedded microcontroller circuit into the analog signals which are then sent to the electrodynamic loudspeaker; and the embedded microcontroller circuit receives the digital voice signals output by the voice processing circuit, so as to compress the signals in a 'ping-pang' manner and then send the compressed signals to a ZigBee RF circuit for RF transmission, and also receives the data output by the ZigBee RF circuit, so as to decompress the data and then send the decompressed data to the voice processing circuit in a in a 'ping-pang' manner. The method and the device provided by the invention have the advantages of simple structure, and lower consumption and cost.

Description

technical field [0001] The present invention relates to the technical field of wireless voice communication, in particular to a full-duplex real-time voice transmission device and method based on ZigBee technology, which is applicable to environments with urgent needs and difficult wired network layout, such as mine rescue, fire fighting and disaster relief, etc. Where the communication method cannot meet the requirements. Background technique [0002] The wireless sensor network is composed of a large number of small and cheap sensor network nodes deployed in a specific area. These nodes sense and collect the information needed by users in a cooperative manner, and transmit these data to users through wireless channels. A typical ZigBee wireless sensor network architecture is composed of several sensor network nodes, a sink node with wireless receiving function, Internet or other communication network and remote user control center. The sensor network nodes are used to col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/14G10L19/00H04W84/18
CPCY02B60/50
Inventor 李奇越王建平黎洁魏常勇穆道明朱程辉钱自拓孙伟秦剑戴雷邓凡李
Owner HEFEI UNIV OF TECH
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