|Carnegie Mellon | Robotics Institute | Field Robotics Center | USDA | Smart Farms|
There are several irrigation modes that the grower can use.
|Irrigation Mode||Description||The WSN Advantage|
|Manual||Allows the grower to send manual irrigation commands.||Irrigation can be determined remotely based on sensor data.|
|Schedule||Irrigated based on a predefined schedule.||Irrigation nodes can easily be reconfigured and/or moved based on the current crop.|
|Local "Setpoint" Control||Uses the schedule but also looks at current soil moisture to determine if irrigation is needed at that nodes location.||Irrigation is determined at each location for precise irrigation control.|
|Global Control||This is used to control irrigation based on values external to the node. Examples of global control can be a sensor on a different node, a computed value from a growing tool, or from a plant science model.||This entire method of control that is completely data driven and allows for feed-forward predictive control is completely unique to WSN's.|
|Pulse Types||This is a sub-mode for the modes listed above. With this option irrigation can be issued in pulses to allow sensors time to react, increase precision, or allow irrigation lines time to recharge.||The ability to do this on each node allows for localized irrigation control.|