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Method for realizing energy conservation of wireless sensing node in greenhouse tomato irrigating system

A wireless sensor node and sensor node technology, applied in transmission systems, wireless communications, energy-saving ICT, etc., can solve problems such as failing to take into account the life cycle of a single node, energy waste of sensor networks, and simultaneous failure of nodes to achieve convenient The effect of system function expansion, energy utilization rate improvement and stable cycle extension

Inactive Publication Date: 2011-06-29
ZHEJIANG UNIV
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Problems solved by technology

The original tree routing protocol of the ZigBee tree network is based on logical tree transmission, which in many cases will cause multiple hops of data packets, resulting in a waste of energy for the entire sensor network
[0003] At present, scholars at home and abroad have corresponding research and improvement on ZigBee tree routing, but some of them are only based on the minimum hops of data packets, only considering the energy consumption of the entire network, and fail to take into account the life cycle of a single node (see Teahong Kim, Daeyoung Kim, Noseong Park, Seong-eun Yoo, and Tomas Sanchez Lopez, “Shortcut Tree Routing in ZigBee Networks,” Information and Communications University.)
There are also studies that consider the strict balanced consumption of energy in the entire network, but this will cause a large number of nodes in the entire network to fail at the same time, which will have a great impact on the entire network (see Ban Yanli, Chai Qiaolin, Wang Chen. Based on Energy Balanced ZigBee Network Tree Routing Algorithm. Computer Applications, 2008,28(11):2791-2794)
[0004] In addition, most of the current domestic automatic irrigation system data collection and control strategies are based on timing mechanisms, and the environmental information data transmission lacks a basis, resulting in low data utilization, and more environmental information is collected, and the coupling between data is relatively weak. Large, resulting in a waste of energy on the data acquisition platform

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  • Method for realizing energy conservation of wireless sensing node in greenhouse tomato irrigating system
  • Method for realizing energy conservation of wireless sensing node in greenhouse tomato irrigating system
  • Method for realizing energy conservation of wireless sensing node in greenhouse tomato irrigating system

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Embodiment

[0065] 1) Use the JN5139 wireless sensor network chip produced by Jennic Company, the TSL2550 digital light sensor from TAOS Company, the SHT11 digital air temperature and humidity sensor from Sensirion Company and the FDS-100 soil humidity sensor from Hangzhou Huier Company to form a modular sensor node. The sensor node collects the air temperature / humidity T / RH, light intensity lx, and soil relative humidity RH in the greenhouse e environmental information;

[0066] 2) Before the environmental information collected by the sensor node is forwarded, the improved ZigBee tree routing protocol is invoked to obtain the remaining energy E of each neighboring node from the neighbor table % , network depth d, ZigBee address block C skip (d) parameters;

[0067] 3) The improved ZigBee tree routing protocol calls the sub-function remain_hops() to calculate the shortest path L from the current sensor node to the destination node R , the specific process is shown in the attached figu...

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Abstract

The invention discloses a method for realizing energy conservation of a wireless sensing node in a greenhouse tomato irrigating system. A ZigBee tree routing mechanism is improved through analyzing the requirement of tomato irrigating environment information and a ZigBee tree routing algorithm; during the data forwarding process of a sensing node, a next-hop routing node is selected by an energy comprehensive evaluation function; during the irrigation decision-making process, a coordinator judges whether the irrigation is needed according to the illumination, air temperature, humidity, relative humidity of the soil, and the current crop growth cycle acquired by the sensing node; when the irrigation is not needed, the coordinator predicts when the irrigation is needed; and prior to this process, the sensing node is in a dormancy state. By the improved ZigBee tree routing and the coordinator irrigation decision-making data request mechanism of the invention, the transmission of a data packet in an overall wireless sensing network is greatly reduced, the energy utilization ratio of the node is effectively improved, and the stable period of the wireless sensing network is prolonged.

Description

technical field [0001] The invention relates to the field of ZigBee wireless sensor network and intelligent irrigation, in particular to a method for realizing energy saving of wireless sensor nodes in a greenhouse tomato irrigation system. Background technique [0002] In the data acquisition platform of the intelligent irrigation system, it is mainly based on the wired method at present, which is not convenient for system layout and expansion. ZigBee, as an emerging wireless sensor network technology, is widely used in the field of data acquisition and monitoring. However, wireless nodes are generally powered by batteries and have a limited lifetime. The original tree routing protocol of the ZigBee tree network is based on logical tree transmission, which in many cases will cause multiple hops of data packets, resulting in a waste of energy for the entire sensor network. [0003] At present, scholars at home and abroad have corresponding research and improvement on ZigBee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/10H04W52/02H04W84/18H04L12/56H04L12/44A01G25/16
CPCY02B60/50Y02D30/70
Inventor 周洪亮张胜张宏建杨祥龙晁敏
Owner ZHEJIANG UNIV
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