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Underwater middle and long distance electric field communication system based on FSK modulation and demodulation

A modulation and demodulation and communication system technology, applied in the field of underwater medium and long-distance electric field communication systems, can solve the problems of short communication distance and achieve the effects of high work efficiency, low power consumption and improved communication distance

Inactive Publication Date: 2021-11-16
XI AN JIAOTONG UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an underwater medium and long-distance electric field communication system based on FSK modulation and demodulation to solve the problem of short communication distance of the existing underwater electric field communication system.

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  • Underwater middle and long distance electric field communication system based on FSK modulation and demodulation
  • Underwater middle and long distance electric field communication system based on FSK modulation and demodulation
  • Underwater middle and long distance electric field communication system based on FSK modulation and demodulation

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be A mechanical connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal c...

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Abstract

The invention discloses an underwater middle and long distance electric field communication system based on FSK modulation and demodulation, which is characterized in that an MCU is arranged at a transmitting end, adopts a 2FSK signal modulation and demodulation mode for communication and can transmit a serial port signal to an FPGA logic controller for signal modulation, and the modulated signal is subjected to digital-to-analog conversion and signal amplification and then is transmitted to an underwater channel through a transmitting electrode; signals emitted by the emitting electrode are received through the receiving electrode, are amplified, filtered and re-amplified in sequence, then are subjected to analog-to-digital conversion processing and then are input into the FPGA logic controller to be demodulated, the demodulated signals are transmitted into the MCU of the receiving end to complete communication, and the emitting end and the receiving end are respectively connected with a power management module. The system is suitable for communication between underwater communication equipment with small volume and low power consumption.

Description

technical field [0001] The invention belongs to the technical field of underwater electric field communication, and in particular relates to an underwater middle and long-distance electric field communication system based on FSK modulation and demodulation. Background technique [0002] In recent years, marine robot swarms have become the development trend and new combat mode of new marine equipment. The key technology to promote the collaborative operation of underwater robot swarms is to solve the technical problems of fast and stable communication between underwater robot swarm nodes. [0003] Compared with the traditional trunking communication method on land, the underwater communication conditions are more stringent, and wireless communication methods such as wireless electromagnetic waves on land are more severely attenuated underwater, so it is basically impossible to realize wireless electromagnetic waves underwater. At present, underwater wireless communication met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B13/02H04L27/12H04L27/14
CPCH04B13/02H04L27/12H04L27/14
Inventor 胡桥陆涛续丹余雷
Owner XI AN JIAOTONG UNIV
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