Development of a smart hybrid power generation monitoring system with anti-theft security/ Hiromi Anne Lagman, Marina M. Marquez, John Emmil H. Oriño, Alliyah Gianna Marie P. Parumog, Princess Ghenny Lou R. Quimson, and Emmanuel B. Valenzuela .--

Bachelor's thesis

College of Industrial Technology .-- College of Engineering Technology major in Mechanical Engineering Technology option in Power Plant Technology Technological University of the Philippines, 2025.

Includes bibliographic references and index.

In daily life, the potential of readily available energy sources is often overlooked. Simple
actions like walking, creating vibrations, or even the natural presence of sunlight hold
immense untapped potential for generating electricity. While these sources may seem
ordinary, they can be innovatively harnessed to sustainably and reliably meet energy
demands and power critical systems, such as security infrastructure. This paper presents an
anti-theft security system powered by a hybrid energy solution that combines solar panels
and energy harvesting technology. The system utilizes solar energy during daylight hours,
while mechanical energy from vibrations, such as human activity or motion, is captured to
supplement the power supply. Each platform incorporates 20 piezoelectric PZT (lead
zirconate titanate) transducers, which not only contribute additional energy but also serve
as vibration sensors. The prototype was installed on the third floor of the PPET Building
and tested over a seven-day period. Results demonstrated that the hybrid system efficiently
powered the 50W security system, with the battery ensuring continuous operation. The
hybrid power system, combining a solar panel generating 20W and a piezoelectric
generator delivering 3.7V, was supported by a 12V, 20Ah battery. Three trials were
conducted per category: hybrid power, CCTV functionality, piezoelectric sensor, and
messaging and alarm performance. The sensors detected vibrations accurately across all
trials, activating alarms within 2 seconds and sending alerts within 3 seconds. This hybrid
system is especially suitable for critical security applications in urban areas, where high
foot traffic and sunlight availability can maximize the energy generated by both solar
panels and piezoelectric generators.

Keywords: anti-theft system, piezoelectric generators, solar panels, hybrid energy,
renewable energy