Related Experiment Video
Updated: May 23, 2026
10:36
Optimization of An Air-Based Heat Management System for Dusty Particulate Matter-Covered Lithium-Ion Battery Packs
Published on: November 3, 2023
The optimization of wireless power transmission: design and realization
Zhiwei Jia1, Guozheng Yan, Hua Liu
1820 Institute, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China. jiayege@hotmail.com
Summary
Wireless power transmission systems offer a practical solution for active capsule endoscopes. This study optimized such systems, achieving 500 mW continuous power with 4.08% efficiency.
Area of Science:
- Biomedical Engineering
- Electrical Engineering
- Medical Devices
Background:
- Wireless power transmission is crucial for multifunctional active capsule endoscopes.
- Addresses power-shortage challenges in endoscopic devices.
Purpose of the Study:
- To optimize wireless power transmission for active capsule endoscopes.
- To enhance power transmission efficiency while considering critical constraints.
Main Methods:
- Evaluated power transmission stability using magnetic flux density, frequency, and orientation stability.
- Incorporated size, safety, magnetic field safety, and temperature rise constraints.
- Developed a mathematical programming model to improve transmission efficiency.
Main Results:
- The optimized system delivers a continuous 500 mW power supply.
- Achieved a transmission efficiency of 4.08%.
Conclusions:
- The proposed method is feasible for wireless active capsule endoscopes.
- Novel designs can further enhance system performance.
Related Concept Videos
01:20The Maximum Power Transfer Theorem
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
01:16Maximum Power Transfer
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
By substituting the entire circuit with...
01:23Transmission Line Design Considerations
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
01:31Energy Stored In A Coaxial Cable
A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
01:16Design of Transmission Shafts
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...
01:23Maximum Power Flow and Line Loadability
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.