DEVELOPMENT OF HOME SECURITY SYSTEM USING PIEZO SENSOR

WEEK 12

From week by week my project to generate the energy by using piezo sensor is always have the problem. Which is the value of current is so small and the output is also cannot be maintain with this problem it is difficult to continue my project.


So, i already discuss with my FYP supervisor to change the title project. But this project is also using a piezo sensor but only just send a signal to the arduino. Now the official title for my FYP project is  DEVELOPMENT OF HOME SECURITY SYSTEM USING PIEZO SENSOR. And im also try my best to make sure this project are successful before the FYP presentation at week 15.

Energy Harvesting Circuit for Piezoelectric

Title: Energy Harvesting Circuit for Piezoelectric

Objective:

1. To use this IC as main circuit for piezoelectric.
2. To get stabilized output from piezoelectric.

Method:

1. Make research and find data sheet for this circuit.

Result:

This breakout board uses the LTC3588 Piezoelectric Energy Harvester from Linear Technologies. This board can be used not only for harvesting piezoelectric energy, but solar energy as well. There is a bridge rectified input for piezo elements (PZ1 and PZ2) and a direct input (VIN) for DC sources. Both are clamped to 20V. In addition, the board can simply be used as a standalone nanopower buck regulator.

An ultralow quiescent current undervoltage lockout (UVLO) mode with a wide hysteresis window allows charge to accumulate on an input capacitor until the buck converter can efficiently transfer a portion of the stored charge to the output. In regulation, the LTC3588 enters a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation.

Four output voltages (1.8V, 2.5V, 3.3V and 3.6V) are pin selectable with up to 100mA of continuous output current and comes pre-configured for an output of 3.3V. However, the output capacitor may be sized to service a higher output current burst. An input protective shunt set at 20V enables greater energy storage for a given amount of input capacitance.

Conclusion:

This circuit can be used in this project to make this project working effectively.