Sound recognizing and positioning device and method for unmanned aerial vehicle

A technology of voice recognition and positioning device, applied in positioning, measuring device, voice analysis and other directions, can solve problems such as poisoning, unimaginable consequences, explosion, etc., and achieve the effect of strong adaptability, accurate recognition rate, and accurate positioning

Inactive Publication Date: 2019-02-15
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although drones are mostly used for photography, video and other purposes, they may still be used by criminals to commit crimes, posing potential and real risk challenges to security in the fields of anti-terrorism, stability maintenance, security, security, drug control, etc.
In addition, once drones are used by criminals for illegal filming, or even for sabotage activities such as poisoning and explosions, the consequences will be disastrous
[0004] At present, there is still a lack of an effective and highly accurate UAV sound recognition and positioning device and method

Method used

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  • Sound recognizing and positioning device and method for unmanned aerial vehicle
  • Sound recognizing and positioning device and method for unmanned aerial vehicle
  • Sound recognizing and positioning device and method for unmanned aerial vehicle

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Experimental program
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Embodiment 1

[0055] Such as Figure 1-8 As shown, a UAV sound recognition positioning device, including a wireless sound sensor network and a general controller;

[0056] The wireless sound sensor network includes a plurality of wireless sound sensor nodes, and each wireless sound sensor node is mainly composed of seven sound sensors, a signal filter amplification module, an ADC module, an MCU and a wireless transmission module; the seven sound sensors use Record the ambient sound at the location and transmit the ambient sound signal to the signal filtering and amplifying module; the signal filtering and amplifying module is used to filter and amplify the ambient sound signal and transmit it to the ADC module; the ADC module is used to filter and amplify the The ambient sound signal is sampled and transmitted to the MCU; the MCU is used to perform audio coding on the ambient sound signal adopted by the ADC module and send it to the next wireless sound sensor node or general controller thro...

Embodiment 2

[0086] This embodiment provides a method for identifying and locating a drone using the device described in Embodiment 1, comprising the following steps:

[0087] S1. Distribute the wireless sound sensor nodes in the area where UAV identification and positioning are required, and the distance between each wireless sound sensor node is between 300-500m;

[0088] S2. The seven sound sensors in the wireless sound sensor node start to record the ambient sound, and transmit the ambient sound signal to the signal filtering and amplifying module; the signal filtering and amplifying module filters and amplifies the environmental sound signal and transmits it to the ADC module; The ADC module samples the filtered and amplified ambient sound signal and transmits it to the MCU; the MCU performs audio encoding on the ambient sound signal adopted by the ADC module and sends it to the next wireless sound sensor node nearest to itself through the wireless sending module or General controller...

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Abstract

The invention discloses a sound recognizing and positioning device and a method for unmanned aerial vehicles. The device comprises a wireless sound sensor network and a master controller. The wirelesssound sensor network comprises a plurality of wireless sound sensor nodes. Each wireless sound sensor node is mainly composed of seven sound sensors, a signal filtering amplification module, an ADC module, an MCU and a wireless transmission module. The master controller comprises a decoding module, a sound recognition module, and a sound source positioning module based on a three-dimensional seven-element sound sensor array. According to the sound recognizing and positioning device and the method for the unmanned aerial vehicles, the environment sound monitoring and transmission are performedin a wireless sensor network mode that is convenient, fast, and high in adaptability. In addition to using MFCC for feature extraction when performing the sound recognition, the sound is also input into a CNN model, then whether the sound of the unmanned aerial vehicle is contained is determined using SVM, so that the recognition rate is more accurate. Finally, a sound source positioning algorithm based on the three-dimensional seven-element sound sensor array is adopted to perform three-dimensional positioning on the unmanned aerial vehicle, so that the positioning is more accurate.

Description

technical field [0001] The invention relates to the technical field of UAV identification and positioning, in particular to a UAV sound identification and positioning device and method. Background technique [0002] The market share of my country's consumer-grade civilian drones accounts for more than 70% of the global market, occupying an absolute advantage. In 2015, about 587,000 UAVs were sold worldwide, of which military UAVs accounted for about 3%, and civilian UAVs accounted for 97%. The sales volume of UAVs is about 399,000. [0003] But the development of drone technology is a double-edged sword. Although drones are mostly used for photography, video and other purposes, they may still be used by criminals to commit crimes, posing potential and real risk challenges to the security of anti-terrorism, stability maintenance, security, security, drug control and other fields. In addition, once drones are used by criminals for illegal filming, or even for sabotage activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/18G10L25/18G10L25/24
CPCG01S5/18G10L25/18G10L25/24
Inventor 樊宽刚刘汉森邱海云何兵杨杰杨斌张振利邓永芳李家节占鹏飞
Owner JIANGXI UNIV OF SCI & TECH
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