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Voice talkback device and method based on LORA (Long Range) technology

A voice intercom and technology technology, applied in the field of voice intercom devices based on LORA technology, can solve the problems of short standby time, low bandwidth utilization, and high power of intercom equipment, and achieve low power consumption, low sampling rate, and improved performance. The effect of bandwidth utilization

Active Publication Date: 2017-09-08
深圳市亿兆互联技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a voice intercom device and method based on LORA technology, aiming to solve the problems of high power, short standby time and low bandwidth utilization of existing intercom equipment

Method used

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  • Voice talkback device and method based on LORA (Long Range) technology
  • Voice talkback device and method based on LORA (Long Range) technology
  • Voice talkback device and method based on LORA (Long Range) technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a voice intercom device based on LORA technology of the present invention includes a gateway 1 and a node 2, the gateway 1 and the node 2 are connected by communication, the gateway 1 is a device that integrates a LoRa gateway and a server, and the node 2 is LoRa intercom device, gateway 1 includes gateway microcontroller 11, gateway LoRa radio frequency module 12, gateway power supply module 13, gateway LoRa radio frequency module 12, gateway power supply module 13 are respectively connected with gateway microcontroller 11, node 2 includes node microcontroller Device 21, node LoRa radio frequency module 22, node power supply module 23, playback module 4, audio codec 3, node LoRa radio frequency module 22, node power supply module 23, playback module 4, input module 5, audio codec 3 and Node microcontroller 21 is connected.

[0044] The gateway 1 also includes an audio codec 3 , a playback module 4 , and an input module 5 , and the audio code...

Embodiment 2

[0049] A kind of voice intercom method based on LoRa technology of the present invention, comprises the following steps:

[0050] S1. Perform call grouping for all nodes;

[0051] S2. Generate audio data: the input module receives the audio analog signal, enters the audio codec for encoding, and compresses it through the audio stream compression algorithm after encoding, generates a frame of compressed audio data and sends it to the node;

[0052] S3. The node sends voice: send the "initiate group voice request" including audio data to the gateway, and open a continuous receiving window;

[0053] S4. The gateway forwards the voice: after receiving the "initiating group voice request" from the node and replying to the request to allow, the voice data is sent to other nodes in a multicast manner;

[0054] S5. The node answers the voice: open a continuous receiving window to answer the voice;

[0055]S6. Play audio data: decompress the received audio data through the decompress...

Embodiment 3

[0062] Such as figure 2 As shown, on the basis of Embodiment 2, step S2 includes:

[0063] S21. Send an "initiate group voice request" including audio data to the gateway;

[0064] S22. Determine whether the gateway replies within the set time, if the node does not receive permission to the request over time, then return to step S21, if the node receives the reply within the specified time, then execute S23;

[0065] S23. The node judges the feedback information of the gateway on the "initiating group voice request", if the feedback is a rejection request, then enters the "answering mode"; if the feedback is a permission request, then enters the "sending mode", and executes step S24;

[0066] S24. Encoding language data and compressing and sending;

[0067] S25. Judging whether the transmission of the language data is completed, if the transmission is not completed, then return to step S24; if the transmission is completed, send the completion mark to the gateway, exit the ...

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Abstract

The invention relates to the field of voice talkback, in particular to a voice talkback device and method based on a LORA (Long Range) technology. The device comprises a gateway and a node, wherein the gateway is in a communication connection with the node; the gateway is equipment in which a LoRa gateway and a server are integrated; the node is LoRa talkback equipment; the gateway comprises a gateway microcontroller, a gateway LoRa radiofrequency module and a gateway power supply module; the gateway LoRa radiofrequency module and the gateway power supply module are connected with the gateway microcontroller respectively; the node comprises a node microcontroller, a node LoRa radiofrequency module, a node power supply module, a play module and an audio encoder / decoder; and the node LoRa radiofrequency module, the node power supply module, the play module, an input module and the audio encoder / decoder are connected with the node microcontroller respectively. Through adoption of a LoRa communication technology and the audio encoder / decoder, the problems of large size and short standby time of an existing interphone are solved by means of the characteristics of low power consumption, long distance and low price of LoRa.

Description

technical field [0001] The invention relates to the field of voice intercom, in particular to a voice intercom device and method based on LORA technology. Background technique [0002] Existing walkie-talkies are divided into analog walkie-talkies, digital walkie-talkies and IP walkie-talkies, all of which have the following disadvantages: [0003] 1. Large volume (generally 110X60X30mm), short standby time; [0004] 2. High power consumption (transmitting power is above 1W, receiving power is 150mW), and the utilization rate of broadband is low. [0005] For IP walkie-talkies, it cannot be used in scenarios without IP or mobile network coverage. Contents of the invention [0006] The invention provides a voice intercom device and method based on LORA technology, aiming at solving the problems of high power, short standby time and low broadband utilization rate of existing intercom equipment. [0007] The present invention provides a voice intercom device based on LORA ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/3827H04B1/713H04W4/06H04W12/02H04L12/66
CPCH04B1/385H04B1/713H04B2001/3866H04L12/66H04W4/06H04W12/02Y02D30/70
Inventor 张铁军俞浩钟景维
Owner 深圳市亿兆互联技术有限公司
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