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Industrial Electronics & Applications (ISIEA), 2010 IEEE Symposium on

Date 3-5 Oct. 2010

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Displaying Results 1 - 25 of 149
  • [Front cover]

    Page(s): c1
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  • [Copyright notice]

    Page(s): 1
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  • Table of contents

    Page(s): i
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  • Welcome message

    Page(s): ii
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  • Organizing Committee

    Page(s): iii
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  • International advisory/liason

    Page(s): iv
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  • list-reviewer

    Page(s): v - vi
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  • Technical program overview

    Page(s): vii
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  • Technical program

    Page(s): viii - xxii
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  • Author index

    Page(s): xxiii - 26
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  • Architecture enhancement of a CWUSB System for high throughput

    Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (400 KB) |  | HTML iconHTML  

    In this paper we propose an architecture of a CWUSB System to reduce the system latency in order to achieve high throughput. The performance of CWUSB devices depends more on practical implementation issues, mostly system latency, rather than the theoretical parameters. This suggests that the primary design objective should be the minimization of system latency. WiMedia Alliance and Universal Serial Bus Implementers Forum (USB-IF) are making every effort to open a market for Certified Wireless USB (CWUSB), a new wireless version of a widely known computer interface. Although WUSB is based on WiMedia Ultra Wideband (UWB) technology, which promises a maximum physical data rate of 480 Mbps, yet unfortunately, all WUSB products are known to fall short of expectations on their performance. This paper presents a solution to this issue. The performance of the proposed architecture has been compared to that of the reference architecture. We have also measured the throughputs for some applications using the proposed architecture. The results clearly show a marked improvement in the throughput. View full abstract»

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  • Hybrid methods in MIMO blind equalization and source separation

    Page(s): 5 - 9
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (288 KB) |  | HTML iconHTML  

    In this paper, we developed hybrid mode algorithms to hasten the convergence of multiple-input multiple-output (MIMO) equalizers with a cross-correlation cost function. In particular, we implemented a maximum a-posteriori (MAP) based single-input single-output (SISO) hybrid algorithm to this MIMO case and found that it exhibits superior performance in terms of the convergence speed and low steady state errors. View full abstract»

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  • An enhanced carrier sensing algorithm for IEEE 802.15.4 low-rate wireless sensor networks

    Page(s): 10 - 15
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (467 KB) |  | HTML iconHTML  

    Wireless sensor networks based on the IEEE 802.15.4 standard is able to achieve low-power transmissions in low-rate and short-distance wireless personal area networks (WPANs). It employs the slotted carrier sense multiple access with collision avoidance (CSMA/CA) for the contention mechanism. The blind backoff process in the slotted CSMA/CA will cause lower channel utilization. Sensor node performs backoff process immediately when the clear channel assessment (CCA) detecting busy channel. It may neglect the implicit information of CCA failed detection and further cause the redundant senses. This paper proposes an additional carrier sensing (ACS) algorithm based on IEEE 802.15.4 to enhance the carrier sensing mechanisms in original slotted CSMA/CA. An analytic model is developed to evaluate the performance of ACS algorithm. The analytical and simulation results demonstrate that the proposed scheme significantly improves the throughput, average medium access control (MAC) delay and power consumption of CCA detecting. View full abstract»

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  • A ZigBee and RFID hybrid system for people monitoring and helping inside large buildings

    Page(s): 16 - 21
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (509 KB) |  | HTML iconHTML  

    This article refers to a system that combines ZigBee and RFID technologies for monitoring people behavior when moving inside a building. The RFID part of our system consists of a set of detector placed at strategic points. To accomplish this detection goal the visitors of the building have to be provided with a RFID tag either active or passive. The ZigBee wireless subsystem will send the information generated by the detectors to the main computer. The movements of all and every one of the attendees will be followed on-line and recorded in a database. Filed information will be useful to know people activity and performance afterward. The system also includes an artificial intelligent program (a planner) that would be used to direct the movements of visitors when necessary, for instance, in case of fast evacuation of the building for fire or earthquake. View full abstract»

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  • A pricing model and sensitivity analysis for MVNO investment decision making in 3G UMTS networks

    Page(s): 22 - 27
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (867 KB) |  | HTML iconHTML  

    In this article we propose a pricing model for MNO and MVNO's investment in 3G UMTS networks. We also investigate and conceptualize the relationship among MNO, MVNO, and other related variables in the proposed pricing model. Next, we develop the influence diagrams representing MNO and MVNO and use them to explore the relationship of total costs, total revenues, and net profit. This diagram is used to find optimal decisions which maximize the expected profit values. Finally, we suggest a simple way of sensitivity analysis to identify the most critical parameters affecting the performance of the MVNO in the 3G wireless network market. An illustrative example of one-way sensitivity analysis is presented. The analysis of the results obtained from the model focuses on of MVNO's customers and its profits in an attempt to provide recommendations which may be utilised and made a greater contribution in the MVNO's investment decision making process. View full abstract»

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  • Performance of an adaptive power based CDMA cognitive radio networks

    Page(s): 28 - 33
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (275 KB) |  | HTML iconHTML  

    In this paper, the performance of a Cognitive Radio (CR) CDMA networks is analyzed in uplink. More precisely, we develop a simulation testbed for analyzing performances of a CR user and a primary user (PU) in a single cell. CR users belong to infrastructure less ad hoc network, which coexist with a primary radio network (PRN). CR users or secondary users (SUs) are considered to form pair wise links. PU and SU are also given on/off activity model to imitate a real time scenario. We propose a scheme of adapting transmission power of SU on the basis of data rate and other network parameters, in order to improve QoS of SU. Further, we evaluate the performance of PRN and CRN in terms of probability of outage and achievable data rate of a PU and a SU. View full abstract»

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  • Design and implementation of a low cost electricity meter testing bench

    Page(s): 34 - 39
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (425 KB) |  | HTML iconHTML  

    Electricity meter testing bench is used to calculate the accuracy of energy meters. It is mostly used by the power transmission and distribution companies of a country. Measuring accuracy of energy meter is important for accurate billing. In this paper, a complete design of a meter testing bench is illustrated. A prototype of the design is developed and tested for commercial use. View full abstract»

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  • Real-time system for facial emotion detection using GPSO algorithm

    Page(s): 40 - 45
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1085 KB) |  | HTML iconHTML  

    Particle Swarm Optimization (PSO) algorithm has been widely recognized as an efficient algorithm with applicability is many areas. Recently, we proposed the Guided Particle Swarm Optimization (GPSO) algorithm, which is a modification to PSO designed for facial emotion detection. GPSO involves keeping track of relevant points, called Action Units (AUs), which are specified on the face of a subject. Swarm of particles was defined such that each particle has a component within the neighborhood of each AU. We implement GPSO into a facial emotion detection system that can detect the six basic universal emotions. The system was tested on a variety of subjects and the results realized were very promising. However, application of the system was limited to pre-recorded video clips because the AUs must be pre-processed to obtain their positions over time, which were then fed as input to the system. In this paper, we present an improvement we made to the system by applying Lucas-Kanade (LK) optical flow algorithm. LK algorithm allowed us to keep track of the positions of the AUs in real-time, thereby eliminating the need for preprocessing. The improved system is now a real-time system that works on video streams to identify facial emotions and achieved the same promising detection success rates as the original system. View full abstract»

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  • A dynamic performance improvement method of Coriolis Mass Flowmeters

    Page(s): 46 - 49
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (833 KB) |  | HTML iconHTML  

    Coriolis Mass Flowmeter(CMF) provides direct measurement of mass flow and is widely used in steady flow measurement. With the development of dynamic flow measurement technology and the increasing of application requirement, the question about dynamic response of CMF has become a hotspot. Recently a lot of research work has been done on this issue and a few papers have been yielded. This paper provides a summary and analyses of the dynamic research method of CMF in latest research work. Furthermore, we proposes a new concise way of specifying and improving the dynamic performance of CMF, discusses the feasibility of this method on the basis of existing investigation and describes the emphases of the future development work. View full abstract»

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  • Development of a digital lock-in amplifier for open-path light scattering measurement

    Page(s): 50 - 55
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (767 KB) |  | HTML iconHTML  

    A digital lock-in amplifier has been developed for improving the quality of the measurements of scattered light from fine particles, for example, diesel particulate emissions. The special features of this digital lock-in amplifier are: to be able to produce consistent signals from a very noisy signal background; to be able to produce accurate measurements from a fast moving signal source; to have the advantage of a low restriction of reference frequency and the ability to cope with changing reference frequency easily, which an analogue lock-in amplifier does not have; and to make it possible to produce a low-cost multiple-channel lock-in amplifier for measuring scattered light from a wide range of scattering angles. A series of lab tests has been carried out. The results of the tests show that this digital lock-in amplifier has much lower noise level and more stable signals than an analogue amplifier. It has the potential capability to measure the scattered light from moving particles. View full abstract»

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  • Novel Coriolis mass flowmeter signal processing algorithms based on DFT and digital correlation

    Page(s): 56 - 60
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (469 KB) |  | HTML iconHTML  

    Coriolis mass flowmeter (CMF) is becoming a research hotspot in flow measurement for its high accuracy and multi-parameter measurement. The detection principle of CMF is to calculate the phase difference of two sine signals which have same frequency. Discrete forurier transform (DFT) and digital correlation are applied in the signal processing of CMF, and theoretical error in this application is analyzed. According to the true signal output from the sensors, simulation analysis is made. Results show that the algorithms' relative error is lower than 0.2%, which is more precise than typical algorithms and can be in widely application in mass flow meter. View full abstract»

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  • Experimental study on the closed-loop control system of Coriolis mass flowmeter for oil-water two-phase flow measurement

    Page(s): 61 - 65
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (785 KB) |  | HTML iconHTML  

    Coriolis mass flowmeter (CMF) is significant in many industrial and commercial areas. The two-phase flow, external vibration or flow pulsation in a Coriolis mass flowmeter can cause errors in the meter's measurements of density and mass flow rate. Some errors may be due to the closed-loop control system. In this paper, they are investigated from analog and digital closed-loop control system by experiment study. And also the advantage and disadvantage ware tested between analog and digital closed-loop control system by using the oil-water two-phase flow. It was found that the relative precise error of mass flowrate was relatively small for oil-water two-phase flow, not changed with the quantity of oil. Experimentally-derived data was used to illustrate that the digital closed-loop control system has more precise than the analog, and provide stable oscillation and selection of a sustainable setpoint for amplitude of oscillation, even during situations such as a highly-damped operation of the flowtube, vibration or beginning/ending operation of the flowtube. View full abstract»

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  • Prediction of line current harmonics in an AC-DC converter using neural networks

    Page(s): 66 - 69
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (361 KB) |  | HTML iconHTML  

    A circuit topology for an AC-DC single-phase single-stage half-controlled converter with reduced line current harmonics is presented. It is shown that these harmonics are reduced below limits imposed by relevant international standards governing the generation and injection of harmonics into the distribution systems by equipment which draws current less than 16 A. The paper also demonstrates the use of a feedforward neural network (NN) for the prediction of the line current harmonics. The neural network predicted results compared favorably with the simulation results and hence were also within the limits of the harmonic regulations. View full abstract»

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  • Optimum nonlinear model predictive controller design for Flyback PFC rectifiers

    Page(s): 70 - 75
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (659 KB) |  | HTML iconHTML  

    Single-phase ac-dc Power Factor Correction (PFC) rectifiers have attracted considerable attention in recent years due to the adoption of increasingly stringent power quality regulations. In this paper a nonlinear model predictive controller design for a single-phase Flyback PFC rectifier is presented. After approximation of the tracking error in the receding horizon by its Taylor-series expansion to a specified order, an analytic solution to the model predictive control (MPC) is developed and a closed-loop nonlinear predictive controller is introduced. The main advantage of this digital control method is that unity power factor can be achieved over wide input voltage, load current range and on high dynamics directly depend on the processing speed of microprocessor. This method is applied to a flyback PFC rectifier, can improve the voltage control dynamics. Simulation results show that flyback PFC rectifier with NMPC provides better and more accurate performance in both steady states and transient compared to linear control methods. View full abstract»

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  • Peripheral interface controller (PIC) based smart low power AC-DC converter

    Page(s): 76 - 81
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (524 KB) |  | HTML iconHTML  

    This paper presents the investigation and implementation of peripheral interface controller (PIC) based smart low power AC-DC converter with active power filter function. The compensation strategy uses boost technique that is piloted by a current control loop (CCL) to operate as a wave shaping control to synthesize the non-sinusoidal current into a sinusoidal form that is in phase with the supply voltage that satisfy the IEEE519 standard. The converter is proposed to be fed from a 240 V (AC) supply having active power filter function correcting to near unity power factor. Control electronics is implemented using a peripheral interface controller type 16F877. It covers studies in simulation and laboratory verification. View full abstract»

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