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Highly Efficient Free Space LaserCommunication 高效自由空间激光通信
Gibin Mathew Padayatti, Dixon Poly, Preejo K. Paulson, Mir, A. Thomas, Jitha Josep
This paper tells about the microcontroller based communication system using laser light as a device to transmit data. Here the microcontroller is connected with a PC where the PC act has an input to the laser which gives input parameters like audio, text and video to transmit with the help of laser medium. After successfully implementing this project, we found that the data transmission through laser light has achieved great success while comparing with the conventional communication system.
本文介绍了一种以激光为传输器件的基于单片机的通信系统。在这里,微控制器与PC机连接,PC机的行为有一个输入到激光,它给出输入参数,如音频,文本和视频传输与激光介质的帮助。在成功实施该项目后,我们发现激光数据传输与传统通信系统相比取得了很大的成功。
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引用次数: 6
Wireless SCADA for Industrial Automation 工业自动化无线SCADA
A. Keeli, E. Teja, N. Devi, G. Venkateswarlu
The key objective of the project is to process the real time data acquisition wirelessly using SCADA system. In large industries several processes are carried on concurrently, so there is a necessity to observe all the processes and govern the factors affecting the process. By using a technology like Wireless SCADA (Supervisory Control and Data Acquisition) we can meet the goal successfully. To manifest this real-time situation, a temperature recording system for a remote plant set-up is developed by Visual Studio. Temperature sensors are interfaced to the AT89S52 microcontroller. Information collected from the sensors is continuously sent over 2.4GHz trans-receiver wirelessly to the microcontroller which is then received at the corresponding 2.4 GHz USB type trans-receiver connected to a PC / Laptop. In the computer “DAQ System” (software) is loaded which takes the collected data and presents them on PC / Laptop’s front panel, and also logs them into the database. We can customize parameters like set point, lower limit and higher limit on the SCADA screen. As the temperature of a sensor goes below set point the microcontroller issues command to the respective relay. The field devices interfaced through relay contacts (with respect to their sensors) are turned OFF (or ON in vice versa). Higher limit and lower limit features are present for producing an alarm on the PC in the event of breakdown of system. Therefore, processes at dangerous places can be controlled with good accuracy and enhanced safety using SCADA.
该项目的主要目标是利用SCADA系统对实时数据采集进行无线处理。在大型工业中,多个过程同时进行,因此有必要观察所有过程并控制影响过程的因素。采用无线SCADA (Supervisory Control and Data Acquisition)技术可以成功实现这一目标。为了显示这种实时情况,Visual Studio开发了一个用于远程工厂设置的温度记录系统。温度传感器与AT89S52单片机相连。从传感器收集的信息通过2.4GHz收发器无线发送到微控制器,然后通过连接到PC /笔记本电脑的相应2.4GHz USB型收发器接收。在计算机中加载了“DAQ系统”(软件),它将收集到的数据显示在PC /笔记本电脑的前面板上,并将它们记录到数据库中。我们可以在SCADA屏幕上自定义设定值、下限和上限等参数。当传感器的温度低于设定点时,微控制器向相应的继电器发出命令。通过继电器触点接口的现场设备(相对于它们的传感器)被关闭(反之亦然)。在系统发生故障时,在PC上产生报警的上限和下限特征。因此,使用SCADA可以很好地控制危险场所的过程,并提高安全性。
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引用次数: 4
Real Time Hardware Software Co-SimulationEdge Map Accumulation Based FeatureExtraction 基于边缘图积累的实时软硬件协同仿真特征提取
A. Wagh, M. Wankhade
There are many applications like automotive vehicle control, video surveillance, remote gesture control etc. for which high speed image processing employing high frame rate image sensors provide details on motion which is useful for improving the speed and precision of the recognition. Therefore, the proposed system presents that the VLSI is capable for extracting motion features from moving images. The extraction of motion features from moving images is developed by using row parallel and pixel-parallel architectures. This system proposes a novel fast texture feature extraction method which takes advantage of the similarities between the neighbouring pixels to estimate texture values. Here, firstly by using FPGA and MATLAB edge detection and mapping take place.The feature extraction and the filtering process can be done through the MATLAB.
在汽车控制、视频监控、远程手势控制等应用中,采用高帧率图像传感器的高速图像处理提供了运动细节,有助于提高识别的速度和精度。因此,该系统表明VLSI能够从运动图像中提取运动特征。采用行并行和像素并行的方法对运动图像的运动特征进行提取。该系统提出了一种新的快速纹理特征提取方法,利用相邻像素之间的相似性来估计纹理值。在这里,首先利用FPGA和MATLAB进行边缘检测和映射。特征提取和滤波过程可以通过MATLAB来完成。
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引用次数: 0
Modified DSR Protocol for Power Saving InMobile Ad Hoc Networks 移动Ad Hoc网络中节能的改进DSR协议
A. Xavier, S. Sankar
Mobile ad hoc networks (MANETs) is a continuously self-configuring, infrastructure-less network of mobile devices. All the nodes involved in these type of networks are battery operated, and the main limitation in this type of networks is Energy optimization. Hence Energy Optimization plays a vital role in the successful operation of the networks. The Dynamic Source Routing protocol is an on demand routing protocol that is based on the concept of source routing. It finds the route from source to destination only when the source initiates the route discovery process. In this paper, we propose a modified dynamic source routing (mDSR) protocol which select energy efficient path. The performance of the proposed protocol has been examined and evaluated with NS-2.34 Simulator in terms of remaining energy, packet delivery fraction, and throughput
移动自组织网络(manet)是一种持续自配置、无基础设施的移动设备网络。这类网络中涉及的所有节点都是电池供电的,这类网络的主要限制是能量优化。因此,能源优化对电网的成功运行起着至关重要的作用。动态源路由协议是一种基于源路由概念的随需应变路由协议。只有当源发起路由发现过程时,才会发现从源到目的的路由。本文提出了一种改进的动态源路由(mDSR)协议,该协议选择了节能路径。利用NS-2.34模拟器对协议的剩余能量、分组传送率和吞吐量进行了测试和评估
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引用次数: 1
Digital MPPT Interface for PV Module 用于光伏模块的数字MPPT接口
Rehan Ahmed
A photovoltaic module is an array of photo voltaic cell when this module expose to solar irradiance, it yields electrical energy in the form of direct current. The source impedance of PV Module functionally follows module surface temperature and intensity of solar irradiance, varies with the position of sun that is ever changing due to tilt in the earth and its elliptical orbit. The maximum energy transfer to load from this PV module is only when load impedance attuned to Maximum Power Point (MPP) in I v/s V characteristic curve of the PV module. An interface needs between load (Solar-Invertor) and PV module. This Maximum Energy Transfer (MET) interface is in the form of Switch Pass regulator, conceive and control vide digital processor. The energy yield is highly efficient and smooth. It is low cost interface suitable for domestic and industrial use from low to higher end in the spectrum of utilisation.
光伏组件是一组光伏电池,当该组件暴露在太阳辐射下时,它以直流电的形式产生电能。光伏组件的源阻抗在功能上遵循组件表面温度和太阳辐照强度,并随太阳的位置变化而变化,而太阳的位置由于地球倾斜和其椭圆轨道而不断变化。只有当负载阻抗在PV组件的I v/s v特性曲线上调谐到最大功率点(MPP)时,该PV组件才能向负载传递最大能量。负载(太阳能逆变器)和光伏组件之间需要接口。该最大能量传递(MET)接口采用开关通调节器的形式,通过数字处理器构思和控制。产能效率高,产能平稳。它是一种低成本的接口,适用于家庭和工业用途,从低端到高端的使用范围。
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引用次数: 0
Power System Based Simulation Study ofUPFC in a Single Transmission Line System 基于电力系统的单传输线系统fupfc仿真研究
K.N.Babu, M. Deepika, D. Jaishri, R. Prasad.R, M. Jisma
As the complexity of the power system increases the necessity for carefully designed devices becomes a requirement to monitor and control the changes in the transmission line power flow. Unified Power Flow Controller (UPFC) is used in regulating the transmission line power flow by controlling impedance, voltage magnitude and phase angle. The working region of UPFC forms a locus within which it could be operated at any point to control the power flow in the system. This paper discusses the concept of operation of UPFC based on the above mentioned techniques distinctively. The locus of operation of UPFC is found to understand the region of operation for the connected load. The simulations are performed in MATLAB Simulink.
随着电力系统复杂性的增加,对输电线路潮流变化的监测和控制需要精心设计的设备。统一潮流控制器(UPFC)是一种通过控制阻抗、电压幅值和相位角来调节输电线路潮流的控制器。UPFC的工作区域形成了一个轨迹,在这个轨迹内,UPFC可以在任意点运行,从而控制系统中的潮流。本文着重讨论了基于上述技术的UPFC的运行概念。找到UPFC的运行轨迹来理解连接负载的运行区域。在MATLAB Simulink中进行了仿真。
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引用次数: 0
Dynamic Modelling and Simulation of FivePhase Induction Motor 五相感应电动机的动力学建模与仿真
Mitesh B. Astik
In this paper, a dynamic modelling of five-phase induction motor is described in a step by step approach. A dq model based on transformation theory for five-phase induction machine is presented. A detailed implementation of an indirect-type five-phase field oriented control including the hysteresis-type pulse width modulation (PWM) current regulator is described. Simulations have been carried out for different load conditions.
本文采用分步法对五相异步电动机进行了动态建模。提出了一种基于变换理论的五相感应电机dq模型。详细实现了间接型五相场定向控制,包括迟滞型脉宽调制(PWM)电流调节器。在不同的负载条件下进行了仿真。
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引用次数: 0
Synchronization of Six Elevated ServiceReservoir Using PLC and SCADA 用PLC和SCADA同步6个升高的servicerreservoir
Priya A. Patil, P. Mhetre, Gayatri Patil, Seema U. Deoghare
Water is one of the primary needs of human beings. Although we can survive without food but we can‘t survive without water. The water that we drink must be clean and healthy. Along with clean water sufficient quantity of water must be distributed to everyone. It is primary duty of urban local body (ULB) to supply 135 LPCD(litre per capita per day) to every citizen. In this system we are synchronizing six ESRs (Elevated Service Reservoir) with main tank at Krishnanagar (Pune). The synchronization of ESRs and monitoring of Flow and Level are to be taken by using PLC( Programmable Logic Controller). The status of these actions are monitored by SCADA system at water treatment plant at Nigdi(Pune).
水是人类的主要需求之一。虽然没有食物我们可以生存,但是没有水我们就无法生存。我们喝的水必须是干净和健康的。随着清洁水的足够数量的水必须分配给每个人。城市地方机构(ULB)的主要职责是向每位市民提供135升(人均每天升)的lcd。在这个系统中,我们正在将6个esr(高架服务水库)与克里希那纳加尔(浦那)的主水箱同步。采用PLC(可编程控制器)实现esr的同步和流量、液位的监控。这些行动的状态由位于Nigdi(浦那)的水处理厂的SCADA系统监测。
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引用次数: 0
Detection of Magnetic Anomaly UsingTotal Field Magnetometer 利用全场磁强计检测磁异常
M.R.Moniri, A.R.Monajati
Magnetic anomaly detection (MAD) is a passive method for detecting ferromagnetic objects to detect anomalies in the Earth's magnetic field, specific hidden targets. In this work, we aim at detecting a ferromagnetic moving target using a static referenced Total Field Magnetometer. We use the two magnetometers outputs to build a total magnetic field of the target. In most of the articles used Three-Axis Magnetometer but in this paper for the first time used One-Axis Magnetometer.This signal is subtract of two magnetometers outputs that we can use a signal integration to increase of SNR. Our analysis is supported by a computer simulation.The high detection probability and the simple implementation of the proposed method make it attractiv.
磁异常探测(MAD)是一种被动探测铁磁性物体的方法,用于探测地球磁场中的异常,特定的隐藏目标。在这项工作中,我们的目标是使用静态参考全场磁力计检测铁磁运动目标。我们使用两个磁力计的输出来建立目标的总磁场。在大多数文章中使用的是三轴磁强计,但本文首次使用了单轴磁强计。该信号是两个磁力计输出的相减,我们可以使用信号积分来增加信噪比。我们的分析得到了计算机模拟的支持。该方法检测概率高,实现简单,具有很强的吸引力。
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引用次数: 1
An Algorithmic Approach for Maximum Power Point Tracking of Wind Turbine using Particle Swarm Optimization 基于粒子群优化的风电机组最大功率点跟踪算法
K. Das, M. Buragohain
Due to the nature of unpredicted wind speed, determining the optimal speed of wind turbine generator to extract the maximum available wind power at any wind speed is essential. By controlling the pitch angle of the wind turbine blades we can control the rotational speed and the output power. To get the maximum output power under lower wind speed and to maintain the stable rated output power under higher wind speed, the proper method must be used. In this paper, particle swarm optimization (PSO)-based maximum power point tracking (MPPT) algorithm is used to trace the maximum power when wind speed is lower than the rated speed and to get the proper pitch angle to limit the output power when the wind speed is greater than the rated speed. The simulation results performed on MATLAB/Simulink show the variations of the wind turbine generator output power, rotor speed, torque, pitch angle of wind turbine blades and wind velocities at those instants.
由于风速不可预测的性质,确定风力发电机组的最佳转速,以在任何风速下提取最大可用风力是至关重要的。通过控制风力机叶片的俯仰角,可以控制风力机的转速和输出功率。为了在较低风速下获得最大输出功率,并在较高风速下保持稳定的额定输出功率,必须采用适当的方法。本文采用基于粒子群优化(PSO)的最大功率点跟踪(MPPT)算法,在风速小于额定风速时跟踪最大功率,在风速大于额定风速时获得合适的俯仰角来限制输出功率。在MATLAB/Simulink上进行的仿真结果显示了风力发电机输出功率、转子转速、转矩、风机叶片俯仰角和风速在这些时刻的变化情况。
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引用次数: 6
期刊
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Energy
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