Mobile irrigation system with plastic optical fiber network
A mobile irrigation system broadly comprising a plurality of irrigation spans each including a mobile tower having a wheel assembly for traversing a field and a motor configured to drive the wheel assembly. The mobile irrigation system also comprises a control system including a plurality of controllers each including a processing element, and a plurality of plastic optical fiber (POF) cables serially communicatively connecting the plurality of controllers to form a local area network LAN on the mobile irrigation system.
1 . A mobile irrigation system comprising:
a plurality of irrigation spans each including a mobile tower having:
a wheel assembly for traversing a field; and
a motor configured to drive the wheel assembly; and
a control system comprising:
a plurality of controllers each including a processing element; and
a plurality of plastic optical fiber (POF) cables serially communicatively connecting the plurality of controllers to form a local area network (LAN) on the mobile irrigation system,
each of the plurality of POF cables including two fibers grouped together in parallel, a set of three electrical conductors grouped and twisted together, a set of two electrical conductors grouped and twisted together, and a non-grouped electrical conductor in parallel with the set of three conductors.
2 . The mobile irrigation system of claim 1 , the control system further comprising a plurality of peripheral devices for obtaining agricultural information or information pertaining to the mobile irrigation system, the plurality of POF cables communicatively connecting the plurality of peripheral devices and the plurality of controllers.
3 . The mobile irrigation system of claim 2 , the plurality of peripheral devices including at least two of a visual spectrum camera, a non-visual spectrum image sensor, a lidar sensor, a radar sensor, a pressure sensor, a temperature sensor, a voltage sensor, an amperage sensor, a stress/strain gauge sensor, a rotary motion measurement device, a linear motion measurement device, an unmanned aerial vehicle, a soil moisture sensor, a weather sensor, and a GNSS unit.
4 . The mobile irrigation system of claim 1 , one of the fibers being a transmission line and another one of the fibers being a receiving line.
5 . The mobile irrigation system of claim 1 , each of the fibers being color coded for facilitating proper connections to the plurality of controllers.
6 . The mobile irrigation system of claim 1 , each of the plurality of controllers including a housing having an entry point such that the fibers and the electrical conductors of one of the plurality of POF cables pass into the housing via the entry point and bifurcate from each other within the housing.
7 . The mobile irrigation system of claim 1 , the electrical conductor being configured for distribution of electrical power and discrete control signals between the plurality of controllers.
8 . The mobile irrigation system of claim 1 , wherein the electrical conductors surround the two fibers to provide protection to the two fibers.
9 . The mobile irrigation system of claim 1 , wherein the control system is configured to transmit command signals, control signals, and data acquisition signals between the plurality of controllers via the plurality of POF cables.
10 . The mobile irrigation system of claim 1 , each of the plurality of POF cables including an outer jacket configured to protect the two fibers from moisture, corrosion, and sunlight.
11 . The mobile irrigation system of claim 10 , each of the plurality of POF cables further including a polyester tape separator between the fiber and the outer jacket.
12 . The mobile irrigation system of claim 10 , each of the plurality of POF cables further including a polyvinyl chloride (PVC) inner jacket between the fiber and the outer jacket.
13 . The mobile irrigation system of claim 10 , each of the plurality of POF cables further including an aluminum shield bonded to the outer jacket.
14 . A mobile irrigation system comprising:
a plurality of irrigation spans each including a mobile tower having:
a wheel assembly for traversing a field; and
a motor configured to drive the wheel assembly; and
a control system comprising:
a plurality of controllers each including a processing element; and
a plurality of plastic optical fiber (POF) cables serially communicatively connecting the plurality of controllers to form a local area network (LAN) on the mobile irrigation system,
each of the plurality of POF cables including two fibers grouped together in parallel, a set of exactly three electrical conductors grouped together, a set of two electrical conductors grouped together in parallel, and a non-grouped electrical conductor in parallel with the set of three electrical conductors.
15 . A mobile irrigation system comprising:
a plurality of irrigation spans each including a mobile tower having:
a wheel assembly for traversing a field; and
a motor configured to drive the wheel assembly; and
a control system comprising:
a plurality of controllers each including a processing element; and
a plurality of plastic optical fiber (POF) cables serially communicatively connecting the plurality of controllers to form a local area network (LAN) on the mobile irrigation system,
each of the plurality of POF cables including two fibers grouped together in parallel, a set of three electrical conductors grouped together, a set of exactly two electrical conductors grouped together in parallel, and a non-grouped electrical conductor in parallel with the set of three electrical conductors.
16 . A mobile irrigation system comprising:
a plurality of irrigation spans each including a mobile tower having:
a wheel assembly for traversing a field; and
a motor configured to drive the wheel assembly; and
a control system comprising:
a plurality of controllers each including a processing element; and
a plurality of plastic optical fiber (POF) cables serially communicatively connecting the plurality of controllers to form a local area network (LAN) on the mobile irrigation system,
each of the plurality of POF cables including two fibers grouped together in parallel, a set of three electrical conductors grouped together, a set of two electrical conductors grouped together in parallel, and exactly one non-grouped electrical conductor in parallel with the set of three electrical conductors.