General
Product Description
GC-Connect utilizes a Windows-based software program to
interface with Grower's Choice controllers distributed
around the greenhouse. These controllers are linked via
a simple twisted-pair communications cable. The GC-Connect
program, which uses a standard Windows graphical interface
with point-and-click usability, collects historical data
from each controller, uploads programming changes and
displays current zone status. These capabilities are also
available right at the controller via the keypad and LCD
display.
GC-Connect uses a state-of-the-art embedded microprocessor
system designed for long-term reliable operation in
a hostile greenhouse environment. Its architecture is
modular, enabling simple and efficient expansion. Central
to the design of all modules is their survivability
and tolerance to noisy environments. The term "noise"
here refers to the effects of lightning, low power voltage,
power brownouts, and electrostatic and magnetically
induced signals. What this means in practical terms
is that your GROWER’S CHOICE should give you many
years of precise, trouble-free control of your greenhouse
environment.
The central processor circuit board is the main module
of the GC-Connect system. This circuit board contains
the embedded processor, memory, real-time clock, six
on-board relays, and all logic to interface the user
to the processor. This circuit board uses a 4-layer
design where the central two layers are power and ground,
and the outer two layers are the signal layers. This
design allows excellent isolation between the noisy
analog circuits of the outside world and the digital
circuits internal to the embedded processor. Additionally,
opto couplers are used to provide an optical barrier
between digital and analog circuits.
The central processor circuit board couples to the
outside world via three additional module types: individual
analog modules (up to 8) which allow growth to 8 analog
inputs, two 9-channel relay output modules which allow
growth from the 6 on-board relay outputs up to 18 additional
relay outputs, and communication modules which allow
communications to a central host system via twisted
pair.
GC-CONNECT is a state-of-the-art system, designed for
ultra reliable operation in the greenhouse environment.
Special attention was given in the design to make the
unit extremely tolerant to low voltage, power outages,
and lightning
The entire unit is housed in a waterproof fiberglass
enclosure. A hinged, clear Plexiglas cover protects
the electronics, switches, and keypad, yet allows the
user to see the status of the operation at a glance.
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