Research On Control System Of Wireless Water Sampler And Underwater Acoustic Communication Module

The water quality of reservoirs is closely related to the safety of people's drinking water.It is of great significance to obtain representative water samples for the treatment of water pollution and the protection of water environment.However,the existing water sampling equipment is mainly manual water sampler with low automation and deep-sea water sampler for large-scale scientific expedition vessels,which can't meet the needs of water source reservoir sampling.In addition,the underwater wireless equipment can't be controlled in real time,and the existing underwater acoustic communication modules are large in size and high in price and cannot be widely used in small-scale underwater sampling and monitoring equipment.Therefore,in this paper,a wireless water sampler is developed to improve the efficiency and accuracy,and a low-cost underwater acoustic communication module is developed to expand the application scope of the control of underwater wireless.In this paper,a water wireless sampler and a low-cost underwater acoustic communication module are designed aiming at the sampling of water source reservoir and the realization of underwater wireless control of small equipment.The purpose is to improve the sampling efficiency of the water reservoir and solve the problem of small underwater sampling and monitoring equipment.After thoroughly understanding the sampling requirements of the water source reservoir,the overall design of the wireless water sampler is conducted in view of the problems of low sampling efficiency and low accuracy.The wireless water sampler is divided into underwater control devices,water bottles and water pickups.This paper introduces a water sampler with the STC90C516RD+ microcontroller as its control core.By receiving the preinstall depth information and the water depth information transmitted by the liquid level sensor,the sound information is transmitted and the water bottle are controlled.In addition,the hardware selection,hardware schematic diagram,PCB design and program development are introduced.And the working principle of the water bottle and the water pickup are introduced.Aiming at the current expensive and large underwater acoustic communication equipment,this paper develops a low-cost underwater acoustic communication module,and introduces the hardware selection,hardware circuit design and PCB design of module with STM32F407VGT6 as the core.In the sampling process,the water sampler can collect water samples of a predetermined depth accurately,which proves the rationality of the design.Through testing,the underwater acoustic communication module can send and receive ultrasonic waves stably.This paper promotes water management and protection of reservoirs through two aspects of work.