Page 125 - eBook_Proceedings of the International Conference on Digital Manufacturing V2

Fabrication and Characterization of a Low-Cost Piezoelectric using Rochelle
Salt for Energy Harvesting and Sensor Applications

suitable for diverse applications, from individual household use to
extensive power generation facilities.

The compact prototype serves as a proof-of-concept that
validates the tracking mechanism and control systems, while the
underlying design principles can be applied to installations of
virtually any size to match specific power generation needs.

Operation of the Smart Flower PV System

At dawn, the system initiates operation by utilising LDR sensors
to detect the sun's initial position, automatically adjusting the
panel orientation for optimal alignment. Throughout daylight
hours, the LDRs continuously monitor solar radiation intensity as
the sun traverses the sky, providing real-time feedback to the
microcontroller for precise panel positioning adjustments. This
constant monitoring ensures maximum energy capture efficiency
while minimising power losses due to misalignment. As evening
approaches and light intensity diminishes below the sensor's
threshold, the stepper motor automatically retracts the panels into
their closed configuration. This protective folding mechanism
shields the photovoltaic surfaces from overnight moisture
accumulation and dust deposition, extending the system's
operational lifespan and maintaining panel cleanliness, as shown
in Figure 45. The system incorporates an innovative safety feature
that monitors wind conditions throughout operational hours.
When strong wind gusts are detected from any direction while the
panels are deployed, the system immediately commands the
panels to fold into their protective position. Once wind speeds
subside to safe levels, the system automatically reopens and
resumes normal tracking operations. This wind-responsive safety
mechanism represents a novel protective approach that prevents
structural damage and panel deterioration caused by severe
weather conditions. The rapid response capability ensures both
system longevity and consistent performance across varying
environmental conditions.

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