Investigation on environment monitoring system for a combination of hydroponics and aquaculture in greenhouse

Abstract

This work develops a distributed environmental monitoring system for the combination of hydroponics and aquaculture based on the internet of things technology, which mainly includes the information perception layer, the information transmission layer and the system architecture. The system has employed multiple sensors terminal to real-time acquisition, including air and water temperatures, dissolved oxygen etc. LoRa protocol is suitable for sending small data and the 4G was employed to collect data and send to the cloud platform. Java is used to develop background applications, to access cloud platforms and local data processing. Based on the collection and processing of environmental data and cloud service platform, the mobile application program client and remote login desktop have been developed. It has been implemented and tested in Tongzhou, Beijing for 3 months in 2020. The results showed the proposed monitoring system stability for overall operation and accuracy data transmission, which can support the actual hydroponics and aquaculture production management. After analysis of monitoring data collected from the developed monitoring system, indoor air and water temperature have the obvious correlation with atmospheric pressure (0.7 and 0.9) and outdoor temperature (1.0 and 0.9), respectively.

Keywords

• Monitoring system
• Hydroponics
• Aquaculture
• Greenhouse
• Internet of things
• Greenhouse environment