2015 5th Nirma University International Conference on Engineering (NUiCONE)最新文献_第2页

Thermal performance analysis of cryogenic system for cooling of superconducting magnets at 4K temperature level 超导磁体低温冷却系统在4K温度水平下的热性能分析

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449645

H. Vaghela, B. Sarkar, A. Bisht, V. Lakhera

{"title":"Thermal performance analysis of cryogenic system for cooling of superconducting magnets at 4K temperature level","authors":"H. Vaghela, B. Sarkar, A. Bisht, V. Lakhera","doi":"10.1109/NUICONE.2015.7449645","DOIUrl":"https://doi.org/10.1109/NUICONE.2015.7449645","url":null,"abstract":"Cryogenic system in fusion research tokamak integrates many components, i.e., heat exchangers, valves, cold circulating pumps, cold compressor etc., in various configurations for the cooling of superconducting (SC) magnets like Toroidal Field (TF), Poloidal Field (PF) and Central Solenoid (CS). Helium refrigerator/liquefier (R/L) serves as a source of cold power for the cryogenic cooling of magnets at 4 K temperature level. However, normally the cryogenic cooling of the SC magnets is accomplished indirectly using the secondary circuit by the use of cold circulating pump, which circulates when the supercritical helium in closed circuit and rejects the heat from SC magnets to the Liquid Helium (LHe) bath which is maintained at ~4 K temperature level by the helium (R/L). This arrangement provides flexibility for the operation of SC magnets, which operates in pulsed manner, and still establishes stable operation for the helium (R/L). There are various configurations that are possible for LHe bath and cold compressor arrangements, i.e., there is a common LHe bath for all SC magnets or individual bath for each SC magnet with either individual cold compressor or common cold compressor for each bath. Thermal system modeling and analysis of the different cryogenic cooling configuration reveals the optimum configuration satisfying the main function of cryogenic cooling of SC magnets with required thermal performance.","PeriodicalId":131332,"journal":{"name":"2015 5th Nirma University International Conference on Engineering (NUiCONE)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131693652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sensitizing engineers: A brief study of the role of ethics in engineering education 敏感化工程师:工程教育中伦理角色的简要研究

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449589

Debapriya Goswami, A. Chakraborty

引用次数: 2

Development of wireless embedded automation system for batch process 批处理无线嵌入式自动化系统的开发

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449593

V. Kadam, S. Jadhav, Mahesh Parihar, Amit Karande

{"title":"Development of wireless embedded automation system for batch process","authors":"V. Kadam, S. Jadhav, Mahesh Parihar, Amit Karande","doi":"10.1109/NUICONE.2015.7449593","DOIUrl":"https://doi.org/10.1109/NUICONE.2015.7449593","url":null,"abstract":"Presently industrial automation is growing rapidly emphasizing on centralized monitoring and independent control of sub-systems. This increases the number of remote sub-systems, which need intermediate communication. Another challenges observed are the reduction of system size and the maintenance cost with flexibility in operation. Regulatory, repetitive sequential control and interlocking are the typical mandatory requirements for batch execution and safety. This paper presents development and analysis of prototype system for wireless controlling and monitoring of the batch process experimental set-up. It proposes the efficient utilization of ARM micro-controller for the real-time monitoring and control of temperature and level. A graphical user interface using Visual Studio.NET is developed to operate the plant remotely. This facilitates the user to control, supervision and data acquisition through wireless communication between laboratory set-up and user interface via ZigBee protocol. Sensitivity and linearity analysis of RTD output and ultrasonic level sensor output is carried out citing fair linearity of RTD and level sensors calibration. Additionally errors in calculated and observed output at ADC are also investigated. The normal operation and safety interlocks have been identified, executed & validated to mitigate the hazardous events in plant considering the possibility of failure of temperature and level sensors. The proposed system is developed successfully and works in defined manner with overall satisfactory performance.","PeriodicalId":131332,"journal":{"name":"2015 5th Nirma University International Conference on Engineering (NUiCONE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128536194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Copy move forgery detection using SIFT and GMM 基于SIFT和GMM的复制移动伪造检测

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449647

N. Yadav, Rupal A. Kapdi

引用次数: 5

Cogging torque minimization by magnet edge inset variation technique in radial flux surface mounted Permanent Magnet Brushless DC (PMBLDC) motor 径向磁通面装永磁无刷直流电动机中磁体边缘插入变化技术的齿槽转矩最小化

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449616

A. Patel

引用次数: 4

A comparative study of various community detection algorithms in the mobile social network 移动社交网络中各种社区检测算法的比较研究

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449651

Ankit Didwania, Z. Narmawala

{"title":"A comparative study of various community detection algorithms in the mobile social network","authors":"Ankit Didwania, Z. Narmawala","doi":"10.1109/NUICONE.2015.7449651","DOIUrl":"https://doi.org/10.1109/NUICONE.2015.7449651","url":null,"abstract":"Mobile social network is a type of delay tolerant network of mobile devices in which there is no end-to-end path available in advance for communication. It works on the principle of a store-carry-forward mechanism. The community is a very useful property of the mobile social network as humans are social animals and they like to live in a community. Such community structure enables efficient communication between devices carried by humans without any infrastructure. We have analyzed various community detection methods and identified those suitable for mobile social network. We have also analyzed various existing distributed community detection algorithms in mobile social networks based on important parameters like complexity and type of community detected. Such analysis will help in discovering strengths and shortcomings of various existing algorithms. As the mobile social network is self-organizing real network working on highly resource constraint mobile devices, it is necessary to enable each mobile device to detect its own community with minimal information, computation and space requirements. This is a very challenging task and very little work is done in it. So there is an immense opportunity available for research in this area.","PeriodicalId":131332,"journal":{"name":"2015 5th Nirma University International Conference on Engineering (NUiCONE)","volume":"238 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114131533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Modelling, simulation and validation of reciprocating engine 往复式发动机的建模、仿真与验证

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449598

Rajesh L. Zadfiya, J. Barve, Vijaykumar H. Unziya

引用次数: 1

Implementation of edge detection algorithms in real time on FPGA 在FPGA上实现实时边缘检测算法

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449635

Ami J. Shukla, Vibha Patel, Nagendra P. Gajjar

{"title":"Implementation of edge detection algorithms in real time on FPGA","authors":"Ami J. Shukla, Vibha Patel, Nagendra P. Gajjar","doi":"10.1109/NUICONE.2015.7449635","DOIUrl":"https://doi.org/10.1109/NUICONE.2015.7449635","url":null,"abstract":"Edge detection servers as a footstone step in image and video processing. These detected edges can further be given as input to other higher level applications like image enhancement, object recognition, object tracking etc. Literature provides various algorithms for edge detection in various domains. At the same time the process is extremely computational exhaustive. For carrying out this task in real time a system which is really fast is required. Software does not seem to be a suitable candidate for implementing it in real time. We require some technology that has huge amount of parallelism. The high amount of computation power in limited time can be achieved by using FPGA as a platform. Field Programmable Gate Array (FPGA) structures are reconfigurable in nature. These FPGA's can be programmed using a Hardware Description Language. But the popularity of FPGA has increased with the availability of high level tools for configuring it. These tools make the FPGA programming easier. This work proposes a real time embedded solution of various edge detection algorithms like Sobel, Laplacian and Prewitt. The performance evaluation of the proposed work is done on various platforms. The throughput is significantly high with a speedup of 26x-50x and the design time decreasing 5 to 6 times. The real time FPGA solution of edge detection algorithms is designed using a powerful design tool Altium Designer for hardware software co design. A 32-bit soft RISC TSK3000A is integrated as a peripheral to the edge detection hardware. The very same tool is also integrated to the ASP generated by CHC(C to Hardware). This CHC takes an input from DVD player and the processed output is given to VGA monitor. The results are verified in real time with an input video from DVD and an output on the VGA monitor.","PeriodicalId":131332,"journal":{"name":"2015 5th Nirma University International Conference on Engineering (NUiCONE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128017100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Endoscopic image restoration using truncated constrained least squares filter in frequency-domain and SURE-LET filter 基于截断约束最小二乘频域滤波器和SURE-LET滤波器的内镜图像恢复

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449643

Smit Trambadia, Hemant Mayatra

引用次数: 0

Design of low voltage bandgap reference circuit using subthreshold MOSFET 基于亚阈值MOSFET的低压带隙参考电路设计

2015 5th Nirma University International Conference on Engineering (NUiCONE) Pub Date : 2015-11-01 DOI: 10.1109/NUICONE.2015.7449627

Sushma S. Sangolli, S. Rohini

{"title":"Design of low voltage bandgap reference circuit using subthreshold MOSFET","authors":"Sushma S. Sangolli, S. Rohini","doi":"10.1109/NUICONE.2015.7449627","DOIUrl":"https://doi.org/10.1109/NUICONE.2015.7449627","url":null,"abstract":"In this paper, we present the design of a low voltage bandgap reference (LVBGR) circuit for supply voltage of 1.2V which can generate an output reference voltage of 0.363V. Traditional BJT based bandgap reference circuits give very precise output reference but power and area consumed by these BJT devices is larger so for low supply bandgap reference we chose MOSFETs operating in subthreshold region based reference circuits. LVBGR circuits with less sensitivity to supply voltage and temperature is used in both analog and digital circuits like high precise comparators used in data converter, phase-locked loop, ring oscillator, memory systems, implantable biomedical product etc. In the proposed circuit subthreshold MOSFETs temperature characteristics are used to achieve temperature compensation of output voltage reference and it can work under very low supply voltage. A PMOS structure 2stage opamp which will be operating in subthreshold region is designed for the proposed LVBGR circuit whose gain is 89.6dB and phase margin is 74 °. Finally a LVBGR circuit is designed which generates output voltage reference of 0.364V given with supply voltage of 1.2 V with 10 % variation and temperature coefficient of 240ppm/ °C is obtained for output reference voltage variation with respect to temperature over a range of 0 to 100°C. The output reference voltage exhibits a variation of 230μV with a supply range of 1.08V to 1.32V at typical process corner. The proposed LVBGR circuit for 1.2V supply is designed with the Mentor Graphics Pyxis tool using 130nm technology with EldoSpice simulator. Overall current consumed by the circuit is 900nA and also the power consumed by the entire LVBGR circuit is 0.9μW and the PSRR of the LVBGR circuit is -70dB.","PeriodicalId":131332,"journal":{"name":"2015 5th Nirma University International Conference on Engineering (NUiCONE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134546337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8