{"title":"Optimization of AC-DC converter for magnetic energy harvesting device","authors":"K. Tashiro, H. Wakiwaka, Y. Uchiyama","doi":"10.1109/ICSENST.2012.6461795","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461795","url":null,"abstract":"In this paper, we propose the optimum condition of AC-DC converter for a magnetic energy harvesting device. When this device is used as an energy source for wireless sensor applications, the DC output voltage should be larger than 1.5 V. First of all, we investigate the basic properties of an AC-DC converter with a Cockcroft-Walton circuit. Experimental results reveal that the optimum conditions are related with the number of steps, input voltage, input resistance, and dummy load. From a magnetic field of 675 nT at 60Hz, the new magnetic energy harvesting device can provide a DC output voltage of 1.5 V. Compared with the previous device we developed, the required magnetic field is as low as 1/400 in amplitude. In contrast, the measured efficiency of the device is better than 80% when the magnetic field is larger than 20 μT.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125376844","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}
{"title":"Enabling visually impaired to read messages from modern gadgets","authors":"R. Subbu, P. Gnanaraj","doi":"10.1109/ICSENST.2012.6461730","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461730","url":null,"abstract":"This paper introduces a design of a new independent electronic device which will enable a visually challenged person to read messages from cell phones to emails. These devices operate at a very low voltage and are attached wirelessly through Bluetooth to the modern gadgets. The visually challenged people are more sensitive to touch at the finger tip when compared to the normal individuals. Taking advantage of this extra sensitiveness of the visually challenged person, these devices does the conversion of alphabets into vibrations in a definite format. The vibration is generated from the small DC vibrator motors placed in 3×2 matrix formats. Despite of technological development these persons are unable to utilize the opportunity to share messages through modern gadgets without help from normal persons. This paper is an initiative to reduce the difficulties faced by the visually challenged persons to read messages from modern gadgets and to enable them to read messages with ease and comfort autonomously.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125509767","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}
{"title":"Nonlinear acoustic behavior of vented vessels in reference to pneumatic volume gauging","authors":"R. Brunnader, G. Holler","doi":"10.1109/ICSENST.2012.6461734","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461734","url":null,"abstract":"Pneumatic volume gauging offers many advantages in comparison with traditional fill-level measurement principles (e.g. tank shape, orientation of the tank and non-uniform surface structure of the fill material do not influence the result). Unfortunately, common pneumatic volume gauging methods work well for sealed tanks, but not for vented tanks. This property is a major drawback of pneumatic methods, but can be dealt by using an electroacoustic model approach for the tank system. This approach takes lumped elements to model the acoustic behavior of the system. In traditional approaches the lumped elements are assumed to be constant. However, practical measurements show a nonlinear behavior of the system. Therefore this work investigates the cause of the nonlinear behavior in theory. Measurements depict the nonlinear behavior and confirm the theoretical considerations.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117259922","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}
S. Das, S. Ghosh, N. Bhattacharyya, B. Tudu, R. Bandyopadhyay, P. Pramanik
{"title":"Development of nanostructured ZnO based gas sensors to use in Electronic Nose for biochemical compounds in black tea","authors":"S. Das, S. Ghosh, N. Bhattacharyya, B. Tudu, R. Bandyopadhyay, P. Pramanik","doi":"10.1109/ICSENST.2012.6461790","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461790","url":null,"abstract":"Quantitative evaluation of aroma of black tea is a difficult task as no single sensor has been developed which can quantify the volatile aroma compounds. As an alternative, the array of sensors has been attempted to solve this problem involving the principle of neural-network for analysis of responses. To develop the array we have used nano-structured ZnO doped with various metals. In this presentation we describe the responses of Geraniol, Trans-2-Hexenal, Linalool Oxide & Linalool, the major aroma chemicals of black tea to doped and undoped ZnO with Pt metal. Nanostructured ZnO doped with and without Pt are synthesized through chemical process. The synthesized materials are characterized by XRD and SEM which confirm their nanostructure and phase purity. The synthesized sensors are heated in the temperature range of 200°C to 400°C and their responses towards volatile biochemical compounds like Geraniol, Trans-2-Hexenal, Linalool Oxide and Linalool are studied.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128346393","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}
B. Syed, A. Pal, K. Srinivasarengan, P. Balamuralidhar
{"title":"A smart transport application of cyber-physical systems: Road surface monitoring with mobile devices","authors":"B. Syed, A. Pal, K. Srinivasarengan, P. Balamuralidhar","doi":"10.1109/ICSENST.2012.6461796","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461796","url":null,"abstract":"Cyber-Physical Systems (CPS) refer to systems that integrate physical processes with computation. Exhaustive characterization of such systems offers us insight in the way we interact with our surroundings. CPS can be modeled and simulated for performance (often real-time) using a model-based signature analysis, where models of physical processes, network and computing resources are integrated. Mobile CPS which have inherent mobility in the physical systems are increasingly popular e.g. smartphones, with wide range of applications given the computational power and memory resources along with host of assorted sensors like accelerometer, gyroscope, GPS etc. We present here one such application of CPS where we simulate the acceleration profiles for different type of cars and different road profiles. We then use the synthetic data generated to extract features for detection of anomalies in the road. Comparing the results with accelerometer data recorded on a mobile phone while actually driving on a road shows that the model can be used to test the features on different vehicles and road types which is always not feasible in real world due to limited resources.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124599074","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}
{"title":"An electromagnetic sensing device for microstructural phase determination of steels through non-destructive evaluation","authors":"R. Roy, A. Panda, A. Mitra","doi":"10.1109/ICSENST.2012.6461675","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461675","url":null,"abstract":"An electromagnetic sensing device has been developed suitable for measurement of magnetic hysteresis loop (MHL) and Magnetic Barkhausen Emissions (MBE) parameters in a non-destructive way. The system is capable of magnetizing the test sample within the frequency range of 50mHz to 200Hz and has the option of band pass filter with the range of 30kHz to 300kHz for measuring Barkhausen emissions. The system has been demonstrated to evaluate the microstructural character of steel used in super-heater of thermal power plant and has the capability of structural health monitoring of engineering components.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"49 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130586831","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}
H. Shimoji, E. B. Borkowski, T. Todaka, M. Enokizono, K. Yamada, Jiaolian Luo
{"title":"The observations of coercivity in RE-Fe-B samples under pulsed high magnetic fields up to 33T","authors":"H. Shimoji, E. B. Borkowski, T. Todaka, M. Enokizono, K. Yamada, Jiaolian Luo","doi":"10.1109/ICSENST.2012.6461794","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461794","url":null,"abstract":"Pulsed high magnetic field generator up to 33T with a long pulsed half-width of 70ms was constructed. Effective fields of coercivity in Nd-Fe-B sintered samples were measured in the pulsed high fields. The measurement errors were estimated experimentally and also by numerical simulations using EMAG. We found errors of coercivity fields of more than 30 % in these samples and discussed on the relationship among the sample insertion gaps in the probe and the systematic errors.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130612050","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}
P. Saha, S. Ghorai, B. Tudu, R. Bandyopadhyay, N. Bhattacharyya
{"title":"Multi-class support vector machine for quality estimation of black tea using electronic nose","authors":"P. Saha, S. Ghorai, B. Tudu, R. Bandyopadhyay, N. Bhattacharyya","doi":"10.1109/ICSENST.2012.6461744","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461744","url":null,"abstract":"Electronic nose (e-nose) is a machine olfaction system that has shown significant possibilities as an improved alternative of human taster as olfactory perceptions vary from person to person. In contrast, electronic noses also detect smells with their sensors, but in addition describe those using electronic signals. An efficient e-nose system should analyze and recognize these electronic signals accurately. For this it requires a robust pattern classifier that can perform well on unseen data. This research work shows the efficient prediction of black tea quality using machine learning algorithm with e-nose. This paper investigates the potential of three different types of multi-class support vector machine (SVM) to build taster-specific computational models. Experimental results show that all the three models offer more than 97% accuracies to predict the considerable variation in tea quality.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114848836","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}
{"title":"Position control of shape memory alloy actuated gripper","authors":"S. Chaitanya, K. Dhanalakshmi","doi":"10.1109/ICSENST.2012.6461701","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461701","url":null,"abstract":"Shape memory alloys (SMA) are the class of stimulus responsive materials which are used as actuators because of the ability in recovering their predetermined shape when subjected to an appropriate thermal procedure. This shape recovery introduces a mechanical work that can be used to produce linear or rotational movements of a modular actuator. This work presents the investigation of control algorithms for position control of a shape memory alloy actuated gripper. The transfer function model of the SMA fiber actuator is determined from the experimental open loop response. Model based proportional integral (PI), pulse width pulse amplitude modulated proportional integral (PI-PWPAM) and internal model sliding mode controller (IM-SMC) controllers are designed. The performance of these controllers is simulated for position control. The results demonstrate that the IM-SMC performs well in tracking the desired response and provides faster response.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127883193","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}
A. Pal, Tarnal Dey, Pardeep Chopra, A. Akuli, Madhabananda Ray, Nabarun Bhattacharvva
{"title":"A new method for grading of silk yarn using electronic vision","authors":"A. Pal, Tarnal Dey, Pardeep Chopra, A. Akuli, Madhabananda Ray, Nabarun Bhattacharvva","doi":"10.1109/ICSENST.2012.6461706","DOIUrl":"https://doi.org/10.1109/ICSENST.2012.6461706","url":null,"abstract":"The color of Tasar silk yarns is determined by a number of production factors, any slight variation in any one of these factors lead to variation in color of the yarn produced. At the present production technology, it is difficult to produce yarns of uniform color at the producers' level, but once produced, those yarns can be sorted based on its color. The important characteristic of tasar silk yarn is its lustrous nature, it reflects light, thus difficult to ascertain the exact color manually. Slight variation in color is difficult to detect manually but the market demands lots with perfectly uniformly colored yarns within the lot though inter-lot variation in color is encouraged. So, Yarn separation based on the color is highly subjective and the process of manually separation of color is tedious and monotonous also. Also, it requires expert manpower, which may not be available in the remote villages in all cases. So, there is a need to develop an instrument, which can easily grade the yarns based on the color. This paper proposes automation of the silk yarn grading process by capturing images and classifying the silk yarns using digital image processing based color analysis technique thereby improving productivity and accuracy of this process. CIELCh color scale has been used for color analysis. Principle Component Analysis (PCA) shows the formation of inherent clusters in the image dataset. Color feature parameter based hierarchical grouping has been introduced here for silk yarn color grading. More than 2000 images have been analyzed using developed solution & the results have been validated with the human experts. Laboratory experiments found the overall accuracy of system in the tune of 91%.","PeriodicalId":367665,"journal":{"name":"2012 Sixth International Conference on Sensing Technology (ICST)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128110966","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}