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Embedding and retrieving patient's identification and compression of ECG signal 嵌入和检索患者心电信号的识别和压缩
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6807904
B. Halder, S. Bose, N. Mishra, S. Mitra
In this paper, the authors propose a new ECG compression algorithm which embeds patient's identification inside the ECG data. The compressed file contains only ASCII characters. The proposed scheme also allows the decompression technique where the original ECG waveform can be exactly reconstructed and retrieve patient's identification from the ECG signal. The whole module has been applied to various ECG data of all the 12 leads taken from PTB diagnostic database (PTB-DB) of physioNet (www.physionet.org) and gives a highly compressed result that can be stored using far less digital space without distorting important ECG characteristics which are essential for proper medical diagnosis. Moreover, the compression, embedding, decompression and retrieving of data are achieved in a series of sequential, simplistic logical processes that can be easily executed. It is observed that the proposed algorithm gives a high compression ratio (CR=7.3593, an excellent Quality Score (QS=1362) and very low difference between original and reconstructed ECG signal (PRD=O.0054).
本文提出了一种新的心电数据压缩算法,该算法将患者身份信息嵌入到心电数据中。压缩文件只包含ASCII字符。该方案还允许使用解压技术对原始心电波形进行精确重构,并从心电信号中检索患者的身份信息。整个模块已应用于从physioNet (www.physionet.org)的PTB诊断数据库(PTB- db)中获取的所有12导联的各种ECG数据,并给出高度压缩的结果,可以使用更少的数字空间存储,而不会扭曲重要的ECG特征,这对于正确的医疗诊断至关重要。此外,数据的压缩、嵌入、解压缩和检索是在一系列顺序的、简单的逻辑过程中实现的,这些过程可以很容易地执行。结果表明,该算法具有较高的压缩比(CR=7.3593)、优良的质量分数(QS=1362)和极低的原始与重构心电信号差(PRD= 0.0054)。
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引用次数: 5
A simple low cost scheme for closed loop operation of MEMS capacitive accelerometer 一种简单低成本的MEMS电容式加速度计闭环操作方案
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6807924
B. Mukherjee, K. Swamy, T. D. Krishnan, S. Sen
This paper presents a simple and low cost scheme for closed loop operation of MEMS capacitive accelerometer. The in-house developed accelerometer consists of a Silicon on Insulator (SOI) based comb drive structure integrated on a PCB with capacitance signal conditioning ASIC. A simple PI type controller designed using basic components like resistors, capacitors and op-amps are externally incorporated. The self test arrangement in MEMS structure has been successfully utilized for applying feedback voltage to operate the device in a closed loop configuration. The proposed scheme is shown to be a simple and cost effective approach for driving similar open loop MEMS accelerometers in a closed loop configuration. Further, the experimental results for both open loop and closed loop arrangement are shown to agree well with their corresponding simulated responses.
提出了一种简单、低成本的MEMS电容式加速度计闭环控制方案。自主研发的加速度计由基于绝缘体上硅(SOI)的梳状驱动结构组成,该结构集成在带有电容信号调理ASIC的PCB上。一个简单的PI型控制器设计使用基本组件,如电阻器,电容器和运算放大器是外部集成。本文成功地利用MEMS结构中的自检装置,施加反馈电压使器件处于闭环状态。该方案被证明是一种简单且具有成本效益的方法,用于驱动类似开环MEMS加速度计的闭环配置。此外,开环和闭环布置的实验结果与模拟结果吻合较好。
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引用次数: 7
Gravitational search algorithm for the static synchronous series compensator based damping controller design 基于重力搜索算法的静态同步串联补偿器阻尼控制器设计
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6808075
Rajendra Ku. Khadanga, J. K. Satapathy
This paper demonstrated an efficient approach for designing a static synchronous series compensator (SSSC)based supplementary controllers for damping low frequency oscillations. The SSSC is mainly GTO based which can control different parameters of power system. A supplementary damping controller for a SSSC is designed for power system dynamic performance enhancement. The lead-lag structure of damping controller is used for the damping of power system oscillation. The proposed controllers design problem is formulated as an optimization problem. The Gravitational Search Algorithm (GSA) is employed to optimize the damping controller parameters. To demonstrate the effectiveness of the proposed adaptive SSSC based supplementary damping controller, computer simulations are performed on a power system considering a single machine infinite bus installed with SSSC. The Simulation results are presented and these results are compared with a conventional method of tuning the damping controller parameters. This will analyze the effectiveness and robustness of the proposed design approach.
本文提出了一种基于静态同步串联补偿器(SSSC)的补充控制器的有效设计方法,以抑制低频振荡。SSSC主要是基于GTO的,可以对电力系统的不同参数进行控制。为了提高电力系统的动态性能,设计了一种SSSC补充阻尼控制器。采用超前滞后结构的阻尼控制器对电力系统的振荡进行阻尼。将所提出的控制器设计问题表述为优化问题。采用重力搜索算法(GSA)对阻尼控制器参数进行优化。为了验证所提出的基于SSSC的自适应补充阻尼控制器的有效性,在考虑安装SSSC的单机无限母线的电力系统上进行了计算机仿真。给出了仿真结果,并与传统的阻尼控制器参数整定方法进行了比较。这将分析所提出的设计方法的有效性和鲁棒性。
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引用次数: 24
Sensitivity improvement of resonant sensor with PID controller 用PID控制提高谐振传感器的灵敏度
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6808041
P. Pandiyan, G. Uma, M. Umapathy, K. Suresh
In this paper, a method to improve the sensitivity of the resonance mass sensor by incorporating PID controller is proposed. The controller is designed to retain the vibrating frequency of the resonator at its natural frequency with mass loading. The experimental results demonstrate that the resonant mass sensor with PID controller provides 18 times higher sensitivity as compared to the resonant mass sensor without controller.
本文提出了一种结合PID控制器提高谐振质量传感器灵敏度的方法。控制器的设计目的是保持谐振器的振动频率在其固有频率与质量负载。实验结果表明,带PID控制器的谐振质量传感器的灵敏度比不带控制器的谐振质量传感器高18倍。
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引用次数: 0
Anomaly detection in nuclear power plant data using support vector data description 基于支持向量数据描述的核电厂数据异常检测
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6807919
Chandresh Kumar Maurya, Durga Toshniwal
Anomaly detection has drawn a slew of attention in recent years, although term has been known as outlier detection in statistics several decades ago. Everyday large volume of data is being generated. For example, flight navigation data, health care monitoring data, social media data, video surveillance data etc. This data contains rare events or anomalous points that needs to be found out-for example less than 2 % of all visitors who visits Amazon website make a purchase. Thus anomaly detection problem can be interesting due to business perspective, security, maintenance etc. The problem becomes challenging because of noise, heterogeneity, high dimensionality of the data. This paper studies a robust algorithm, based on support vector data description, for anomaly detection. We perform extensive experiments on real data coming from nuclear power plant to empirically demonstrate the effectiveness of the algorithm as well as finding anomalies in the data set. We also discuss extensions of the algorithm to find anomalies in high dimension and non linearly separable data.
近年来,异常检测引起了人们的广泛关注,尽管在几十年前,该术语在统计学中被称为离群值检测。每天都会产生大量的数据。例如,飞行导航数据、医疗监测数据、社交媒体数据、视频监控数据等。这些数据包含需要发现的罕见事件或异常点——例如,访问亚马逊网站的所有访问者中只有不到2%的人进行了购买。因此,从业务角度、安全性、维护等方面来看,异常检测问题是一个有趣的问题。由于数据的噪声、异质性和高维性,这个问题变得具有挑战性。研究了一种基于支持向量数据描述的鲁棒异常检测算法。我们对来自核电厂的真实数据进行了大量的实验,以经验证明该算法的有效性,并发现数据集中的异常。我们还讨论了该算法在高维和非线性可分数据中发现异常的扩展。
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引用次数: 12
Modelling and analysis of resistive Superconducting Fault Current Limiter 电阻式超导故障限流器的建模与分析
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6808076
S. Dutta, B. Babu
Superconducting Fault Current Limiters (SFCLs) are used in power system network to mitigate the overcurrent and its prominent effects. Nowadays, Coated Conductors (CCs) are widely used for novel design of SFCL for such applications. In this paper, comparative study on the operational characteristics of Resistive-SFCL based on BSCCO and YBCO Coated Conductors under fault condition is analyzed for an 110kV/9kA network. Also Electro-thermal Model of Coated Conductor is studied in MATLAB software. To verify the effectiveness of the proposed Resistive-SFCL, several case studies of Coated Conductors have been carried out in MATLAB. The results show the choice of optimal configuration of CCs as SFCL which effectively improves the thermal stability and current limiting characteristics under fault condition in the network.
超导故障限流器(SFCLs)用于电网中缓解过流及其显著影响。目前,涂层导体被广泛应用于SFCL的新型设计中。本文对110kV/9kA电网中基于BSCCO和YBCO涂层导体的电阻式sfcl在故障状态下的运行特性进行了对比研究。利用MATLAB软件对涂层导体的电热模型进行了研究。为了验证所提出的电阻- sfcl的有效性,在MATLAB中对涂层导体进行了几个案例研究。结果表明,选择最优配置的cc作为SFCL,有效地改善了网络在故障状态下的热稳定性和限流特性。
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引用次数: 6
Frequency response of a microwave notch filter in presence of two interfering tones 两个干扰音存在时微波陷波滤波器的频率响应
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6808073
T. Chattopadhyay, Prosenjit Bhattacharyya
The frequency response of a microwave notch filter using a pair of magic tees has been studied theoretically as well as experimentally in this paper. This notch filter designed at 10.5 GHz eliminates the first interfering tone. When the second interference appears at the input of this notch filter the response is modified and its fails to remove the first interference because the null point of the response gets shifted upwards under the action of the second interference. The dc shift of the minimum of the response has been calculated and measured when the second interference is 520 MHz below the first interference. The theory and experiment gives a reasonable fit.
本文从理论和实验两方面研究了一种采用双魔术三通的微波陷波滤波器的频率响应。这个陷波滤波器设计在10.5 GHz,消除了第一个干扰音。当第二个干扰出现在陷波滤波器的输入端时,响应被修改,它不能去除第一个干扰,因为响应的零点在第二个干扰的作用下向上移动。计算并测量了当第二个干扰比第一个干扰低520 MHz时,响应最小值的直流位移。理论和实验很吻合。
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引用次数: 3
Krishi-Bharati: An interface for Indian farmer Krishi-Bharati:印度农民的界面
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6808057
Soumalya Ghosh, A. Garg, S. Sarcar, P. Sridhar, Ojasvi Maleyvar, Raveesh Kapoor
Rapid growth in the field of ICT helps in basic aspects of mankind like-agriculture, education, healthcare etc. However, the moderate technical growth of ICT applications is confined to the community of a limited number of people, who live in digital pockets. The illiterate people like - farmer, shopkeeper etc. are unable to take the advantages of the ICT revolution. According to the UNESCO report, population of such people in the globe is 64% who are unable to use the technology either language or technical barrier. Moreover the percentage (76%) must be increased in the context of developing countries. The essential agriculture information is very useful to a farmer for taking effective decision thus we proposed to develop an iconic interface which is integrated with speech based interaction in Indian languages. The proposed interface is critically evaluated with the farmer from different states of India. The evaluation results proved the effectiveness of the proposed interface.
信息和通信技术领域的快速发展有助于人类的基本方面,如农业、教育、保健等。然而,信息通信技术应用的适度技术增长仅限于少数人的社区,他们生活在数字口袋中。像农民、店主等文盲无法从信息通信技术革命中获益。根据联合国教科文组织的报告,全球有64%的人不会使用技术,要么是语言障碍,要么是技术障碍。此外,在发展中国家,这一比例(76%)必须提高。基本的农业信息对农民做出有效决策非常有用,因此我们建议开发一个集成了印度语言语音交互的标志性界面。提议的接口与来自印度不同邦的农民进行了严格的评估。评价结果证明了所提接口的有效性。
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引用次数: 15
Cluster validation techniques for Bibliographic databases 书目数据库的聚类验证技术
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6807921
S. Mishra, S. Saha, S. Mondal
In entity name disambiguation technique, records of same entity are clustered together. One of the major challenges in such technique is to validate the result as the actual or correct results are often not known or difficult to know. In this context, three commonly known evaluation measures are precision, recall and f-measure. All these indices are external validity indices as they all need gold standard data. But in Bibliographic databases like DBLP, Arnetminer, Scopus, Web of Science etc., obtaining golden standard is very difficult for each entity. So, there is a need to use some other metrics to evaluate the performance on Bibliographic data. In this paper, a novel scheme based on internal validity index is used to evaluate the performance of entity name disambiguation algorithm. Several distance measures are used here to compute the similarity between two records. These functions are then incorporated in the definitions of internal validity indices.
在实体名称消歧技术中,将同一实体的记录聚类在一起。这种技术的主要挑战之一是验证结果,因为实际或正确的结果通常不知道或难以知道。在这种情况下,三种常见的评价指标是精度、召回率和f-measure。所有这些指标都是外部效度指标,因为它们都需要金标准数据。但在DBLP、Arnetminer、Scopus、Web of Science等书目数据库中,每个实体都很难获得黄金标准。因此,有必要使用一些其他指标来评估书目数据的性能。本文提出了一种基于内部有效性指标的实体名称消歧算法性能评价方案。这里使用几个距离度量来计算两个记录之间的相似性。然后将这些函数合并到内部有效性指数的定义中。
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引用次数: 9
Winding deformation analysis in power transformers using Finite Element Method 电力变压器绕组变形的有限元分析
Pub Date : 2014-05-01 DOI: 10.1109/TECHSYM.2014.6808072
S. K. Sahoo, S. Gopalakrishna
Winding deformation in power transformers affects its mechanical integrity. Diagnosis of winding deformation is a necessary step towards preventing its permanent failure. Sweep Frequency Response Analysis (SFRA) is widely used to analyze the nature and extent of deformation. However, the location of deformation needs the signature from the deformed transformer at various locations, which is practically not feasible. In this paper, Finite Element Method (FEM) and SFRA are used to model deformations on a benchmark winding and obtain corresponding signatures. Different parameters derived from SFRA are used as indices to distinguish type and location of deformations.
电力变压器绕组变形影响其机械完整性。绕组变形诊断是防止其永久失效的必要步骤。扫描频响分析(SFRA)被广泛用于分析变形的性质和程度。然而,变形位置需要变形变压器在各个位置的签名,这在实际中是不可行的。本文采用有限元法(FEM)和SFRA对基准绕组的变形进行了建模,得到了相应的特征。利用SFRA得到的不同参数作为区分变形类型和位置的指标。
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引用次数: 4
期刊
Proceedings of the 2014 IEEE Students' Technology Symposium
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