Method and apparatus for measuring network node of underwater sensor

Abstract

The invention discloses a measuring method for network nodes of an underwater wireless sensor and a device. The method comprises the steps of: carrying out the interconversion of an electric signal and an ultrasonic signal by utilizing an ultrasonic transducer so as to complete underwater ultrasonic communication; calculating the relative distance between the nodes and the device by utilizing the transmission delay between node communication as well as the propagation velocity of ultrasound underwater; and collecting the underwater environmental data information from the position of the nodes by utilizing a sensor specially used in underwater detection. The device comprises a microcontroller, an FSK modulating and power amplifying module and a transducer which are connected in series; a hydrophone, a weak signal amplifier, an FSK demodulating chip and a microcontroller which are connected in series; a power management module is used for supplying power for a circuit and managing a power supply; and an external spreading interface module is used for connecting with a corresponding interface sensor and peripherals. The invention realizes the underwater sound communication function with low cost and low power consumption and the distance measuring function between the network nodes of the underwater wireless sensor.

Description

technical field [0001] The invention relates to the field of underwater wireless communication, in particular to an underwater wireless sensor network, and is a device simultaneously having underwater communication, distance measurement between nodes and environmental parameter measurement. Background technique [0002] Since the 1990s, research on underwater sensor networks has begun to rise abroad, and the Massachusetts Institute of Technology (MIT) has conducted in-depth research on underwater acoustic communication and underwater self-organizing networks. The MIT Robotics Laboratory has built an experimental system for underwater sensor networks. In this system, the combination of underwater acoustic communication and optical communication is used to realize node positioning and data recovery. The underwater autonomous robot (AUV) is used as the mobile node layout and Recycle the fixed node, and communicate with the fixed node through the blue and green light for data re...

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Problems solved by technology

[0004] In order to solve the disadvantages of high price, high power consumption, and large volume in the current underwater acoustic communication equipment on the market in the prior art, and cannot meet the needs of large-scale underwater application and long-time underwater work under the condition of battery power supply, the present invention The purpose of this paper is to reduce the cost of underwater wireless sensor network node devices, meet the requirements of large-scale application of underwater sensor networks, and design an underwater wireless sensor network node device and measurement method

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