20-01-2012, 02:46 PM
Architecting next-generation smart LED lamp apps
[attachment=16345]
A resistor divider network at
the bulk capacitor terminals will
step the output voltage down to a
range that the microcontroller can
handle. This signal can be directed
to a comparator whose output
can be connected to the current
regulation system with the ability
to shut it off. When the voltage
goes over a pre-defined limit, this
comparator will switch and shut
the system down.
Fault logging, diagnostics
When lamps are deployed in commercial
installations such as large
buildings, cark parks, streets and
so on, servicing and replacement
impacts cost and efficiency of
maintenance. The same controller
that implements a communication
interface to a parent controller
for plan servicing and replacement
can also be used to log and
communicate failures.
