Multi-Parameter Remote Real-Time Monitoring System Of Aquaculture Water Quality

Aquaculture is an important part of the agriculture economy. China is a big country in aquaculture in world, which has headed the list of total output of aquatic products in the world for consecutive years. With the development of the aquaculture in the transition from rough type to intensive and industrialized, and its species and output keep in increasing,The study of aquaculture production management technology is more and more attention.With the development and maturity of computer technology, electronic technology and data transmission technology, More new technology applied in the aquacultur has became increasingly widespread. However, The development of the aquaculture industry in China started relatively late, compared with advanced foreign technology, we have quite a big gap. To ensure the healthy growth of the cultured aquatic animal, We need to provide a suitable water quality conditions and the aquatic environment. There are some factors affecting the growth of the aquatic products, such as water dissolved oxygen, pH, turbidity, nitrate, salinity and ammonia nitrogen concentration, etc.To ensure the normal growth of aquatic products, we should monitor the water quality parameters which affect the growth of aquatic products and make it in the suitable scope for the growth of aquatic products.Building a real-time monitoring system for aquaculture water quality parameters has important implications to improve the yield and quality of aquatic products, reduce the labor intensity of workers and protect the water environmentIn this Paper, a set of monitoring system based on wireless transmission network is set up to achieve remote real-time monitoring of aquaculture water quality, solve such problems as being difficult in wiring and high cost in current monitoring system. In the new system, the combination of solar cells and lithium cells is used to supply energy, the DC/DC buck circuit is used to switch voltage, in order to meet the operating voltage of the system; YCS-2000 dissolved oxygen sensor, pH electrode and Pt1000 temperature sensor are used to monitor the parameters of aquaculture water quality; STM32F103 chip is used to process the data; Zigbee and GPRS data transmission modules are used to transfer the monitored data to the remote monitoring center, where the data is processed, stored and displayed; Labview is used to create the remote monitoring center interface, which makes data monitoring more intuitive; Keil is used to write the program in the controller, which control the whole system work normally and orderly. At the same time, the controller will adjust the concentration of dissolved oxygen according to the situation of the dissolved oxygen content in the aquaculture. If the dissolved oxygen sensor detects that the oxygen concentration in aquaculture water is lower than the preset threshold, the controller issues instructions to start up aerator to adjust the concentration of dissolved oxygen.Some tests such as stability of sensor and network measurement, the working condition of whole system were conducted in laboratory and the experimental site. It is demonstrated by test data that the confidence level of the data monitored by the system is high and the packet loss rate of the network is 0.39%, which means the network is stable and reliable in communication, and the aerator is stable in working performance. So the system can fulfill the remote real-time monitoring of aquaculture water quality and has great practical significance on reduction of labor intensity, improvement of quality of aquatic products and protection of water environment.