An underwater acoustic communication module, method and underwater wireless sensor network node device

Abstract

The invention discloses an underwater acoustic communication module, a method, and an underwater wireless sensor network node device. The underwater acoustic communication module includes: a digital signal processor, a digital-to-analog converter, an analog-to-digital converter, an ultrasonic transducer and a hydrophone; The hydrophone is used to obtain the underwater ultrasonic signal and convert the underwater ultrasonic signal into a first analog signal; the analog-to-digital converter is used to convert the first analog signal into a first digital signal, and the digital signal processor is used to process the first digital signal Digital quadrature coherent demodulation modulation, media access control or routing cross-layer underwater acoustic communication processing to obtain the second digital signal; the digital-to-analog converter is used to convert the second digital signal into a second analog signal; the ultrasonic transducer is used to convert the first The second analog signal is converted into an ultrasonic signal and transmitted into the water. The underwater acoustic communication module, method and underwater wireless sensor network node device can realize the cross-layer underwater acoustic communication function without complex hardware circuits.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to an underwater acoustic communication module, a method and an underwater wireless sensor network node device. Background technique [0002] Since the last century, that is, the 20th century, the research on underwater wireless sensor networks has begun to rise at home and abroad, and underwater acoustic communication technology has also been applied to it and has gradually developed and matured. Underwater wireless sensor network technology is a multi-disciplinary technology, which involves communication, electronics and computer technology, and is undoubtedly one of the most influential technologies in this era of IT technology. In underwater wireless sensor networks, thousands of underwater acoustic wireless sensor nodes are usually randomly deployed in three-dimensional underwater areas that are difficult for humans to reach. They form a multi-diving underwater...

AI Technical Summary

Problems solved by technology

The inventive scheme is reasonable and feasible, but has the disadvantages of single FSK modulation and demodulation function, poor scalability, etc.

In addition, Chen Yan and others proposed a multi-purpose underwater acoustic modem in the literature [1], and realized the underwater acoustic modulation and demodulation function through the ADSP-BF533 chip running the modulation and demodulation program, which can improve the FSK modulation and demodulation of the above-mentioned inventive device. Disadvantages of single tuning function and difficulty in expansion

([1] Chen Yan, Zeng Juan, Du Lijun, etc. Underwater Acoustic Modem Based on ADSP-BF533. "Acoustic Technology", 2008.) At present, the existing underwater acoustic communication equipment in the market still has high price and high power consumption. , The disadvantage of low integration, can not achieve large-scale underwater applications and long-term battery support work, and cross-layer underwater acoustic communication functions such as routing, MAC, modulation and demodulation must require complex hardware circuits to achieve

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