Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Energy Harvesting System in Laptops using Piezoelectric Charge Generation

Thesis
by

Kimberly Villanueva

on 13 September 2012

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Energy Harvesting System in Laptops using Piezoelectric Charge Generation

Energy Harvesting System in Laptops using Piezoelectric Charge Generation Nowadays, power usage is becoming predominant when compared to the past and at the same time, it becomes challenging to satisfy the user’s needs with available power. Introduction In today's generation, laptops are the necessities to every individual either in their offices or in schools. Laptops Piezoelectric Material Piezoelectric materials are most competitive materials for harvesting power from ambient vibration sources due to the high conversion efficiency from mechanical strain to an electrical energy Piezoelectric effect is expressed in single crystals, ceramics, polymers, composites, thin-films and relaxor-type ferroelectric materials, but the majority of the energy harvesting devices fabricated in the past work have been made up of polymers (PVDF) and ceramics (lead zirconate-lead titanate, PZT). Piezoelectric Effect Lead zirconate titanate (PZT) has emerged in recent years as a promising multifunctional material for microelectromechanical systems (MEMS) because of its ferroelectric and ceramic-like mechanical behavior. PZT materials exhibit greater sensitivity and have a higher operating temperature. PZT Objectives To design a rectifier that converts AC source to DC source from the piezoelectric charge mounted on the keyboard. Objective 1: To design a voltage multiplier that converts small AC source to a higher DC source in order to charge the battery. Objective 2: To know how much charge the battery could be obtain to the keyboard. Objective 3: Scope and Delimitation Focuses on a laptop that has a 9-Cell Li-Ion battery to be specific for future experimentation. It cannot turn the laptop on by just typing into the keyboard even though piezoelectric materials are mounted below the keys of the keyboard. From objective 3: Methodology We will conduct measurements on our PZT’s generated voltage (AC).
From objective 1: Running a simulation voltage multiplier.
From objective 2: Using DMM, measure the acquired energy.
Test of Methodology To design a rectifier that converts AC source to DC source from the piezoelectric charge mounted on the keyboard.
From objective 1: To design a voltage multiplier that converts small AC source to a higher DC source in order to change the battery.
From objective 2: To know how much charge the battery could be obtain to the keyboard.
From objective 3: Circuit of a Multiplier Circuit of a Rectifier Conceptual Framework typing the keyboard piezoelectric device system's circuitry storage element
Full transcript