19-09-2017, 11:18 AM
In modern greenhouses several measuring points are required to track local climatic parameters in different parts of the large greenhouse for the greenhouse automation system to function properly. Wiring would make the measurement system expensive and vulnerable. In addition, wired measurement points are difficult to relocate once installed. Therefore, a Wireless Sensor Network (WSN) consisting of small wireless sensor nodes equipped with radio and one or more sensors is an attractive and cost-effective option to build the required measurement system.
In the last generation of greenhouses it was sufficient to have a measuring point wired in the center to provide the information to the greenhouse automation system. The system itself was usually simple without the opportunities of locally controlling heating, lights, ventilation or some other activity, which was affecting the greenhouse's indoor climate. All this has changed in modern greenhouses. The typical size of the greenhouse itself is much larger than it was before, and greenhouse facilities offer several options for making local adjustments to lights, ventilation, heating and other greenhouse support systems. However, more measurement data is also needed to make this type of automation system work properly. The increase in the number of measurement points should not drastically increase the cost of the automation system. It should also be possible to easily change the location of the measuring points according to the particular needs that depend on the specific plant, possible changes in the external structure of the time or greenhouse and the placement of the plant in the greenhouse.
It can be understood in the following video:
In the last generation of greenhouses it was sufficient to have a measuring point wired in the center to provide the information to the greenhouse automation system. The system itself was usually simple without the opportunities of locally controlling heating, lights, ventilation or some other activity, which was affecting the greenhouse's indoor climate. All this has changed in modern greenhouses. The typical size of the greenhouse itself is much larger than it was before, and greenhouse facilities offer several options for making local adjustments to lights, ventilation, heating and other greenhouse support systems. However, more measurement data is also needed to make this type of automation system work properly. The increase in the number of measurement points should not drastically increase the cost of the automation system. It should also be possible to easily change the location of the measuring points according to the particular needs that depend on the specific plant, possible changes in the external structure of the time or greenhouse and the placement of the plant in the greenhouse.
It can be understood in the following video: