Robust Controller for Delays and Packet Dropout Avoidance in Solar-Power Wireless Network

Solar Wireless Networked Control Systems (SWNCS) are a style of distributed control systems where sensors, actuators, and controllers are interconnected via a wireless communication network. This system setup has the benefit of low cost, flexibility, low weight, no wiring and simplicity of system diagnoses and maintenance. However, it also unavoidably calls some wireless network time delays and packet dropout into the design procedure. Solar lighting system offers a clean environment, therefore able to continue for a long period. SWNCS also offers multi Service infrastructure solution for both developed and undeveloped countries. The system provides wireless controller lighting, wireless communications network (WI-FI/WIMAX), CCTV surveillance, and wireless sensor for weather measurement which are all powered by solar energy

Indoor Wireless RF Energy Transfer for Powering Wireless Sensors

For powering wireless sensors in buildings, rechargeable batteries may be used. These batteries will be recharged remotely by dedicated RF sources. Far-field RF energy transport is known to suffer from path loss and therefore the RF power available on the rectifying antenna or rectenna will be very low. As a consequence, the RF-to-DC conversion efficiency of the rectenna will also be very low. By optimizing not only the subsystems of a rectenna but also taking the propagation channel into account and using the channel information for adapting the transmit antenna radiation pattern, the RF energy transport efficiency will be improved. The rectenna optimization, channel modeling and design of a transmit antenna are discussed

Wireless power transfer with multilevel output voltages

This wireless power transfer (WPT) is to develop one of the tools for power transfer through wireless. In this project wireless power transfer with multilevel output voltage was built. The output from this project is 12V and 5V. Normally, most of the appliances in home need the cables to transfer the electrical energy with different voltages from power source. The more appliances used, the more cables needed. The cables have high risk to damage or loosened and can expose into electrical short or maybe fire because they are not tidy and messy. So, the numbers of cables used should be minimized to avoid the dangerous risk. To overcome this problem, wireless power transfer should be developed by using concept of electromagnetic methodology circle type. There are certain ranges that power can be transfer efficiently. As a result from this project, there are different types of graph by using different resistor which is 1 kΩ and 330 Ω at a certain distance. The gains are different from 1 kΩ and 330 Ω by using different resistor. It recorded by the both resistor shown the low gain when the distance of receiver are far away from transmitter. The efficiency also shown the different value when the distance far away. The efficiency is less than 1 %. The distance used in this project is 0 cm to 3 cm. So, the distance of this project give affects to the output result which is 5 V and 12 V to light the LED light. The important part of this project is to achieve multilevel output voltages of WPT to be transferred

Electromagnetic interference impact of wireless power transfer system on data wireless channel

Trabalho apresentado no 7th Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2016, 11-13 abril 2016, Caparica, PortugalThis paper focuses on measurement and analysis of the electromagnetic fields generated by wireless power transfer system and their possible interaction on data transmission channel. To measure the levels of electromagnetic fields and spectrum near the wireless power transfer equipment the measurement system in the frequency range 100 kHz to 3 GHz was used. Due to the advances in technology it becomes feasible to apply the wireless power transfer in the electric vehicles charging. Currently, in the Faculty of Science and Technology of the University Nova high power wireless power transfer systems are in development. Those systems need to be controlled by several microcontrollers in order to optimize the energy transmission. Their mutual communication is of extreme importance especially when high intensity fields will generate highly undesired influence. The controllers are supposed to communicate with each other through radio frequency data channels. The wireless power transfer system with the electromagnetic interference may influence or completely disrupt the communication which will be a severe problem.N/

Design of a Wireless Power Transfer System using Inductive Coupling and MATLAB programming

Wireless power transfer (WPT) is the propagation of electrical energy from a power source to an electrical load without the use of interconnecting wires. It is becoming very popular in recent applications. Wireless transmission is useful in cases where interconnecting wires are difficult, hazardous, or non-existent. Wireless power transfer is becoming popular for induction heating, charging of consumer electronics (electric toothbrush, charger), biomedical implants, radio frequency identification (RFID), contact-less smart cards, and even for transmission of electrical energy from space to earth. In the design of the coils, the parameters of coils are obtained by using the basic calculations and measurements. The experimental results are presented and verified by using the MATLAB programming for the input and output wave forms. DOI: 10.17762/ijritcc2321-8169.15066