Week 18

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.

For data sheet,

http://www.linear.com/docs/28909

Conclusion:

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

Week 17

Title:
Testing piezo-electric transducer

Objective:

1. To test the output of piezoelectric.
2. To make the observation

Method:

1. Connect 4 pieces of piezoelectric in series and parallel connection and record the output.

Result:

In parallel connection, the piezoelectric will produce about 2-16V AC depends on the mechanical stress that had been apply towards. But the output voltage is stable because of the mechanical stress is not the in the same amount of pressure.
If in series connection, it will step up the the voltage up to 24V AC.

Conclusion:

.The piezoelectric will produce the AC output voltage when the mechanical stress is apply.

Week 16

Title:
Step up voltage (DC-DC) module

Objective:

1. Find suitable module to boost up the voltage.
2. To fulfill the next objective for output. 

Method:

1. Research from the internet (e-bay.com, lelong.com.my)

Result:

DC 3-34V to DC 4-35V DC-DC Adjustable Boost Step-up Power Supply Module

Description:

• LM2577S non-isolated boost module
• Input Voltage: DC 3-34V
• Output Voltage: DC 4-35V (continuously adjustable)
• Input Current: 3A (max.)
• Output Current: 2.5A (max.)
• Operating Temperature: -40 deg C to +85 deg C

Conclusion:
The output voltage can be vary from 4-35V DC and can be use for output.

Week 15

Title: Find LED display meter for voltage and current.

Objective:

1. To display to others how many voltage and current that piezoelectric produce.

Method:

1. Do the research in the internet.
2. Find the available type in the market.

Result:

LED Digital Volt / Amp Panel meter / Amp 10 A (Red & Blue)

Description:

Size: 48mm X 29mm X 22mm Range: DC3.2-30V ( Can Measure Power Supply Directly ) Display: 0.56 "LED digital tube Display color: red (Volt) & blue (Amp) Refresh rate: about 500mS / times Input: DC voltage Resolution: 1% +1 digit Power Supply: DC3.2 -30V Operating temperature: -10degree ~ 65 degree red cable DC+, black cable DC - Attention if the Voltage over 30V ,it maybe will burned.

Conclusion:

This meter can easily show how many current and voltage has been produce by piezoelectric and others can see easily.

Week 14

Title: Submission of Proposal Report Writing and Blog

Objective:

1. To finalize and complete the proposal report writing for submission.
2. To submit the report to supervisor

Method:

1. Printing the report and binding before final submission
2. Completing all report writing for last submission.

Result:

1. All the report writing settled before final submission
2. All the blog writing settled before submission

Conclusion:

By completing all the writing on proposal and blog, basically my FYP 1 is finish for this semester. this blog writing will continue on next semester as  FYP 2 Blog Report.

Week 13

Title: Process of Completing Proposal Report & Blog Writing

Objective:

1. To complete the report and blog writing as supervisor needed.
2. To finish all the report before final submission on next week.

Method:

1. Check and discussion with the supervisor.
2. Do the correction and compile everything in the report.

Result:

1. The good report is in progress.
2. Corrections has been done.
3. Blog writing is complete.

Conclusion:

By completing all the writing on proposal and blog, basically my FYP 1 is Nearly to finish. All the info and correction have been settle before the day of submission.

Week 12

Title: The Preparation for Proposal Report Writing

Objective:

1. To complete the proposal report writing for submission.
2. To complete the first draft according to guideline.

Method:

1. Show the step of writing the proposal to supervisor
2. Submission report to supervisor to show as draft

Result:

1. Supervisor check the word and format report writing
2. Supervisor do some correction for the report
3. Supervisor give a suggestion and idea for good writing report

Conclusion:

By submission the draft report and get some good explanation about the writing, I understand more to write a good report and get the good marks from the supervisor.