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Electrical Energy01:10

Electrical Energy

Using electric appliances for a longer period of time consumes more electrical energy and results in a higher electric bill. The energy produced by the transfer of electrons from one point to another is known as electrical energy. If power is delivered at a constant rate, the electrical energy can be defined as the product of power used by the device for a period of time. The energy unit on electric bills is the kilowatt-hour, where one kilowatt-hour is equivalent to 3.6 × 106 joules. The...
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The power and energy delivered to an element are subjects of great significance in the field of electrical engineering. It is a well-known fact that a 100-watt light bulb emits more light than a 60-watt one. Therefore, power and energy calculations play a crucial role in the analysis of electrical circuits.
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Electrochemical Systems01:24

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Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...
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Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
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A Real-Time Wearable Electromyography Measurement System for Small Animals
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A Real-Time Wearable Electromyography Measurement System for Small Animals

Published on: November 15, 2024

Energy-quality system design for in-body communication.

Yuwei Zhang1, Ye Li, Dengyu Qiao

  • 1Shenzhen Institute of Advanced Technology Chinese Academy of Sciences, Shenzhen, China. yw.zhang@sub.siat.ac.cn

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|December 8, 2009
PubMed
Summary
This summary is machine-generated.

This study optimizes wireless systems for implantable medical devices by modeling human body effects and adjusting parameters like bandwidth and modulation to minimize energy consumption while maintaining communication quality.

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Area of Science:

  • Biomedical Engineering
  • Wireless Communication Systems
  • Implantable Medical Devices

Background:

  • The proliferation of wireless communication technology has led to an increase in implantable medical devices.
  • Limited energy resources in these devices present a significant challenge for system design.
  • Existing energy models do not adequately account for the unique challenges of implantable systems.

Purpose of the Study:

  • To develop an updated system-level energy model for implantable medical communication systems.
  • To incorporate the effects of human body tissue on signal transmission into the energy model.
  • To minimize wireless system energy consumption through parameter optimization.

Main Methods:

  • Updated a system-level energy model to include human body tissue effects.
  • Optimized digital baseband and RF parameters (e.g., signal bandwidth, peak-to-average ratio (PAR), modulation levels, data rates).
  • Evaluated communication quality considering 1/f noise and third-order harmonic distortion alongside channel noise.

Main Results:

  • The developed model effectively accounts for human body tissue's impact on signal transmission.
  • Parameter adjustments led to minimized wireless system energy consumption.
  • The evaluation framework provides a comprehensive assessment of communication quality.

Conclusions:

  • The updated energy model is suitable for implantable medical communication systems.
  • Optimizing digital and RF parameters is crucial for energy-efficient wireless systems in medical implants.
  • Considering factors like body tissue, 1/f noise, and harmonic distortion is essential for robust communication quality.