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3PI is an autonomous, sensor-based, data-driven, precision irrigation system that can operate as a standalone device or in concert with an existing irrigation system. The standard two sensor configuration is for one sensor to be positioned at the base of the root ball and the other located half way to the surface. The documented problems associated with resistance style sensors, such as these, are resolved in the controller's embedded software.
The network is electrically and physically separate from the irrigation controllers and is disconnected from the Internet. It features all of the services and servers usually associated with the Internet including: two Domain Name Servers (one for the top level domain, the other for the IoT domain), a Web Server, two Collaboration Servers, two Network Attached Storage servers, three Application Servers, two Database Servers (one Document Orientated and the other Relational), and two Domain Name Servers.
At least one application server collects sensor data and provides it to at least one web server, and optionally to at least one database server, as shown below.
At a minimum, only one web server and one sensor data controller are necessary for sensor monitoring.