In recent times, with wide spread of Internet, streaming media is getting more prevalent. Various streaming protocols have been primarily established to make transference of multimedia content easier to end user. Rece...
详细信息
ISBN:
(纸本)9781728158754
In recent times, with wide spread of Internet, streaming media is getting more prevalent. Various streaming protocols have been primarily established to make transference of multimedia content easier to end user. Recent streaming protocols are frequently established with networking development and computing prospects. In the past few years, realtime Communications, comprising numerous protocols and technologies have been contributory to the creation of media sessions through switching systems. Familiar legacy procedures such as real time control protocol (RTCP) and realtime Transfer protocol (RTP) are the ideal instruments to achieve the transfer process;although, in Internet of Things (IoT) environment, convergence properties are inadequate and their usage turn out to be a major challenge. In recent years, multimedia application comprises mobile networks, incorporated sensors and IoT devices. Only some of the research works are obtainable to assist protected multimedia communications achieved in IoT. In this paper, we analyze numerous streaming protocols employed in IoT organizations and explain appropriate taxonomies with classification. The integration of Multimedia Services and IoT still pose challenge due to the limited capabilities of IoT devices and unique features of multimedia applications. The main intention of this paper is to support the future investigations to further enhance streaming protocols and various compression techniques used for transmission of multimedia data in IoT.
This thesis proposes a novel approach to power electronics system design that is based on the open-architecture distributed digital controller and modular power electronics building blocks (PEBBs). The proposed distr...
详细信息
This thesis proposes a novel approach to power electronics system design that is based on the open-architecture distributed digital controller and modular power electronics building blocks (PEBBs). The proposed distributed digital controller partitions the controller in three levels of control authority. The power stage controller, designated as hardware manager, is responsible for low-level hardware oriented tasks; the high level controller, designated as applications manager, performs higher-level application-oriented tasks; and the system level controller handles system control and monitoring functions.
Communications between the hardware-oriented controller and the higher-level controller are implemented with the previously proposed 125 Mbits/sec daisy-chained fiber optic communication protocol. real-timecontrol and status data are communicated by means of communication protocol. The distributed controller on the power converter level makes the system open, flexible and simple to use. Furthermore, this work gives an overview and comparison of current state-of-the-art communication protocols for real-timecontrol applications with emphasis on industrial automation and motion control. All of the studied protocols have been considered as local area networks (LAN) for system-level control in power converter systems. The most promising solution has been chosen for the system level communication protocol.
This thesis also provides the details of design and implementation of the distributed controller. The design of both the hardware and software components are explained. A 100 kVA three-phase voltage source inverter (VSI) prototype was built and tested using the distributed controller approach to demonstrate the feasibility of the proposed concept.
暂无评论