Design And Implementation Of Greenhouse Potted Plant Automatic Watering System Based On Internet Of Things

Potted plants can not only purify the air,beautify the environment,but also relieve stress and make people feel good.Hence,they are widely favored in people's daily life.The batch cultivation of potted seedlings is mainly carried out in greenhouse.The batch cultivation of potted seedlings is mainly carried out in greenhouse.The traditional potted irrigation in greenhouse mainly depends on the artificial experience to judge the degree of soil moisture and determine the amount of water to be poured.The gardener with insufficient experience is easy to pour too much or too little water.Due to the lack of automation,the healthy survival of vegetation is often interfered by too much artificial drying.In view of the cumbersome operation in the greenhouse potting irrigation system,single environmental data collection,and real-time remote monitoring,this paper designs a greenhouse potted automatic watering system based on the Internet of Things,embedded system and automatic control,which realizes the automatic watering,environmental parameter collection and remote monitoring of potted plants.The main contribution of this paper are as follows:Firstly,the demand analysis of greenhouse potted automatic watering system was carried out.The advantages and disadvantages of networking schemes such as Bluetooth,WiFi and NRF24L01 were discussed.The overall framework of greenhouse potted automatic watering system was designed.Secondly,the NRF24L01 wireless sensor network under the system is designed.On the hardware,the schematic design of the MCU module,power management module,NRF24L01 RF module and each sensor module in the sensor node is completed.In software,a network layer protocol is built for the NRF24L01 module based on the Small RTOS51 operating system.A simple routing algorithm is designed to realize the collection and transmission of environmental parameters of the greenhouse pot and the delivery of automatic watering control commands.Thirdly,the hardware design,software design and human-computer interaction interface design of the embedded Linux main control platform are completed.A complete embedded Linux system was built,and the GUI application on the ARM board was written based on Qt,which realized the near-end monitoring of the greenhouse potted automatic watering system.Fourthly,the realization principle of remote monitoring is analyzed.The Web remote monitoring center based on B/S architecture is designed.The web server construction,CGI program design and remote control interface design are completed,and the remote end control of the greenhouse potted automatic watering system is realized.Finally,the NRF24L01 wireless sensor network test and the whole system performance test were completed.The test results show that the greenhouse potted automatic watering system designed in this paper is stable in operation,good in performance,easy to operate,and has a good promotion value.