Monnit was approached by a large agricultural / produce grower about a project they wanted to implement. They were seeing variations in growth throughout their greenhouse and wanted to have a better understanding of what was causing and hindering the growth in certain areas. They were looking for an easy to use, reliable wireless sensing solution that could help them monitor andoptimize the climate in their greenhouses for better efficiency.
Effective greenhouses management is to minimize energy use while preventing crop issues due to temperatures, high humidity and leaf wetness. If the climate is not being measured, growers tend to overcompensate so that no area within the greenhouse falls outside of acceptable perimeters, without knowing whether or not its needed.
For their initial project, the grower implemented 100 wireless sensors (12 to 15 agriculture sensors per hectare), for monitoring temperatures and humidity. The sensors were placed in a grid throughout the greenhouses, attached to suspended wires just above the plants.
The sensor data is sent wirelessly to the MonnitLinkTM gateway at one end of the buildings, which sends the information to the iMonnitTM online sensor monitoring system. Due to the extensive size of the area being monitored, a repeater was placed in a central location to ensure sensors transmissions are received. Using iMonnit Sensor Maps, the grower was able to upload a graphic showing the plant layout of the monitored area, and visually “drag and drop” sensor tags on to the map with live data, allowing them to see the performance of their green- houses from an aerial type view.
The sensors were set to check temperatures every few minutes and record temperatures every 10 minutes. Noti cations were setup to alert their staff if temperature or humidity levels fall outside of their nominal range, allowing them to adjustthe greenhouse climate appropriately
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