Greenhouse three-layer wireless network measurement and control system and layering and clustering method thereof

Abstract

The invention discloses a greenhouse three-layer wireless network measurement and control system and a layering and clustering method thereof, which comprehensively use wireless sensor network technology, wireless mobile network technology and the like. In the system and the method, a three-layer wireless network consists of a high-layer base station node, a greenhouse group control terminal, an intermediate-layer convergence cluster head node and a lower-layer nodes wireless sensor network node, the intermediate-layer convergence cluster head node is configured according to node cost, operation cost and the requirement on convenience information processing, and the configuration optimization of a lower-layer convergence cluster head node is realized by improving the selection method of aclassic LEACH clustering algorithm the cluster head nodes and applying a multi-objective optimization method. The method is favorable for reducing information transmission delay, cost and power consumption and improving information transmission efficiency. The system can be widely applied to agricultural facilities such as greenhouses, plastic tents and the like, and other indoor environments suchas hospital buildings, hotels or hotel buildings, halls, studio halls, superstores, supermarkets and the like to realize information wireless measurement and control.

Description

technical field [0001] The invention relates to a wireless network system capable of real-time detection and control of environment and other information and a hierarchical clustering method thereof, which are used in greenhouse facilities. Background technique [0002] With the advancement of science and technology, modern greenhouses such as agricultural greenhouses, hospital buildings, hotels or restaurant buildings, assembly halls, studio halls, large shopping malls and supermarkets need to perform real-time detection and control of various indoor environmental information and various status information to achieve facility management. And environmental control automation and intelligence. [0003] At present, greenhouses and other facilities generally use wired measurement and control systems. There are problems: a large number of signal transmission lines and power lines lead to difficult construction of facilities, complex installation and maintenance, heavy workload, ...

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Problems solved by technology

[0003] At present, wired measurement and control systems are widely used in greenhouses and other facilities. There are problems: a large number of signal transmission lines and power lines lead to difficult construction of facilities, complex installation and maintenance, heavy workload, high cost, and limited application of mobile operating equipment; cannot flexibly increase or Reduce the number of sensor nodes and adjust the position of nodes; due to the particularity of environments such as greenhouses, wiring materials such as metal joints are rusted, water seeped, easily corroded, and the reliability of the system is low

The above three patents all use a hierarchical distributed structure of wireless sensor networks to reduce communication overhead and transmission power of ordinary nodes, but none of them combine the structure and application characteristics of the greenhouse, and the Internet network based on the IP protocol often loses real-time performance due to congestion. If it is not guaranteed, the total power consumption and delay will be large, which cannot meet the requirements of wireless detection and control of greenhouse environmental information

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