Research On Standardized Perception Mode And Key Technology Of Fruit And Vegetable Intelligent Greenhouse

In recent years,intelligent greenhouse technology has been widely concerned because of its huge social demand and economic benefits.However,China’s development in this field lags behind western countries,so it is of great significance to construct a standardized environment perception system for fruit and vegetable intelligent greenhouse.First,the whole overall architecture is introduced based on Io T from the needs of real users.After that,the system architecture and the main hardware explained from two aspects of architecture and performance standard.Second,the requirements is explained,analyzes the functional requirements of environmental information collection node,introduces the hardware structure and corresponding software workflow of environmental information collection node,and completes the embedded software development of the collection node based on Alios Things Internet of Things operating system.Third,In view of the lack of evaluation index of the system perception ability in the practical application field of the fruit and vegetable intelligent greenhouse at present,an algorithm for counting the coverage rate of the wireless sensor network of the fruit and vegetable intelligent greenhouse was proposed as the evaluation index of the system perception ability,and the corresponding statistical software was developed according to the algorithm.a variable step virtual force algorithm based on tanh function is proposed,which solves the problem that the coverage rate of traditional virtual force algorithm is not stable from iteration to later stage and improves the coverage rate compared with the existing variable step virtual force algorithm.The effectiveness of the proposed method is verified by simulation experiments on Matlab platform.The routing algorithm of node ad hoc network for intelligent greenhouse is designed.Last,the application terminal of the system was developed based on Ali Cloud platform,the system was installed and built in the actual greenhouse test environment,and the system was tested from the aspects of deployment algorithm effect,coverage statistics software function,node ad-hoc network routing function,system application terminal function and so on.The results show that the function of the system is stable and reliable,and the function test of the whole system can meet the needs of users.