Jinjiang Wang, Yulong Zhang, Li-xiang Duan, Xuduo Wang
{"title":"Multi-domain sequential signature analysis for machinery intelligent diagnosis","authors":"Jinjiang Wang, Yulong Zhang, Li-xiang Duan, Xuduo Wang","doi":"10.1109/ICSENST.2016.7796265","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796265","url":null,"abstract":"Feature extraction plays an important role in machinery fault diagnosis and prognosis. The features extracted from time, frequency and time-frequency domains are widely investigated to describe the properties of overall signal from different perspectives, seldom considering the sequential characteristic of time-series signal in which the fault information may be embedded. This paper investigates a novel approach combing modified Symbolic Aggregate approXimation (SAX) framework and Kernel Principal Component Analysis (KPCA) to extract fault information by analyzing sequential pattern in time-series signal for fault diagnosis. SAX reduces the dimensionality of raw data by transforming the original real valued time series into a discrete one with analyzing signal sequential characteristic and then multiple features are fused by KPCA for fault classification. The proposed approach has high computation efficiency and feature extraction accuracy. Experimental studies on reciprocating compressor valve demonstrate that the presented approach outperforms the methods of SAX-entropy using support vector machine for classification.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128968389","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":"A motion tracking method by combining the IMU and camera in mobile devices","authors":"Wei Fang, Lianyu Zheng, Huanjun Deng","doi":"10.1109/ICSENST.2016.7796235","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796235","url":null,"abstract":"In order to track the localizations of mobile devices in an unknown environment, this paper presents an architecture combining a monocular camera and an inertial measurement unit (IMU) in ubiquitous mobile devices. The IMU module provides acceleration and angular velocity with high-frequency, but the IMU-based motion tracking is more inclined to collapse due to the drift integration. While the vision-based motion tracking can provide higher accuracy, but it cannot work in the environment with weak texture or dynamic scenes. Based on the fusion of the IMU and monocular camera, this paper proposed a loosely couple method in the error-state Extended Kalman Filter framework. With the combination of the advantages the monocular camera and IMU, the proposed method can achieve real-time ego-motion estimation in resource-constrained mobile devices. Finally, the validity of the proposed motion tracking method is evaluated by experiments.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129286233","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":"Linear regression models for chew count estimation from piezoelectric sensor signals","authors":"Muhammad Farooq, E. Sazonov","doi":"10.1109/ICSENST.2016.7796222","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796222","url":null,"abstract":"Research suggests that there might be a relationship between chewing rate and final energy intake. Wearable sensor systems have been proposed for automatic detection of food intake. This work presents the use of linear regression for estimation of chew counts from piezoelectric sensor signal. For known chewing sequences, four features are computed (number of peaks, valleys, zero crossings and duration of chewing), and linear regression models were trained and tested for estimation of chew counts using cross-validation scheme. Adjusted R2 and mean absolute error (of chew counts) are used for performance evaluation. ANOVA along with Tukey Kramer test was used to compare the performance of different models. Results suggest that best performance was achieved with multiple linear regression model (all features as predictors) with adjusted R2 of 0.95 and mean absolute error of 9.66% ± 6.28%. Results suggest that linear regression models can be used for estimation of chew counts from piezoelectric strain sensor signals.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114685355","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}
Zhu Qiwen, Sun Jun, H. Xueqin, Zhou Hongmei, Tang Yongming
{"title":"Study on different touch object recognition algorithm based on Android and capacitive touch panel","authors":"Zhu Qiwen, Sun Jun, H. Xueqin, Zhou Hongmei, Tang Yongming","doi":"10.1109/ICSENST.2016.7796300","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796300","url":null,"abstract":"Nowadays, touch panel technology has become the mainstream of human-computer interaction. Based on a smart phone equipped with Atmel's latest touch chip - maxTouch874 and the Eclipse software, a system that can gather the original signals from self-capacitance and mutual-capacitance is developed. The recognition of four kinds of touch objects is achieved with the different characteristics of different touch objects. The test result verifies the accuracy of the algorithm.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132007044","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":"A video-based monitor for assessing free-fall droplet motion","authors":"Chih-Yen Chen, C. Weng, C. Hwang, C. Hsieh","doi":"10.1109/ICSENST.2016.7796219","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796219","url":null,"abstract":"A newly video-based monitoring technique was developed in this study to characterize the shape and free-fall velocity of water droplets. The free-fall droplet monitoring system integrates three main components which are containing the CCD image sensor for capturing video images, the backlight source for illuminating the water droplets, and the computation unit for the image acquisition and function control. Subsequently, the high-speed CCD image sensor was used to capture images in 200 fps and the exposure time was set at 100 μs. With high contrast images, we mark out every droplet by detecting its contour. Later, a series of droplet detection and tracking algorithms were executed to obtain the velocity of the free-fall droplets. In the simulation experiments, the glass balls and the water droplets ejected from a sprinkler were both introduced for the verification of the system performance. The experimental results support the proposed free-fall droplet monitoring system including the combination of droplet detection and droplet tracking algorithms are capable to provide a promising approach for the measurement of the free-fall droplets. Additionally, this apparatus could be improved by replacing a CCD image sensor with larger sensing area or the faster sampling rate in our next attempt.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"250 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132060026","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":"Research on reflective pulse oximetry based on fiber optic spectrometer","authors":"Zheng Liu, Dezhi Zheng, Wei Zhou, Meiling Zhou","doi":"10.1109/ICSENST.2016.7796304","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796304","url":null,"abstract":"Human oxygen saturation detection is based on the Lambert-Beer Law, but since the human body is a strong scattering tissue instead of a homogeneous medium, the influence of scattering need to be considered, which means the basic Lambert-Beer Law is not applicable. In this paper, a fiber optic spectrometer is used to detect the blood oxygen saturation in vivo with reflective method. Based on the dynamic spectrum theory, the concept of equivalent attenuation is proposed, converting the three-dimensional data measured in real time into two-dimensional characteristic spectral data. In spite of the baseline drift and dark noise of the spectrometer, the two-dimensional characteristic spectral data can be corrected by multiple scatter correction, which can eliminate the influence of the scattering and baseline drift, and improve the accuracy of the model building.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130069766","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}
W. Lai, S. Jang, Ho Chang Lee, Wei-Te Liu, C. Hsue
{"title":"A high performance VCO using adaptive class C technique for sensor application","authors":"W. Lai, S. Jang, Ho Chang Lee, Wei-Te Liu, C. Hsue","doi":"10.1109/ICSENST.2016.7796255","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796255","url":null,"abstract":"This paper presents a 1.1V low power Voltage Control Oscillator (VCO) is designed and implemented in a 0.18μmCOMS 1P6M process. The proposed circuits are using adaptive class C technique that can reduce power consumption. At the supply voltage 1.1V, the output frequency is 2.155GHz and the phase noise is -129 dBc/Hz at 1MHz offset. Tuning range is about 155MHz (6.9%) between 2.155 to 2.31GHz while control voltage was tuned from 0 to 2V. Excluding output buffers the VCO consumes the power 0.5 mW under a standard supply of 1.1 V.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131789052","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}
R. Marani, N. Mosca, V. Renó, M. Nitti, G. Cicirelli, E. Stella, T. D’orazio
{"title":"Improving performance of an omnidirectional range sensor for 3D modeling of environments","authors":"R. Marani, N. Mosca, V. Renó, M. Nitti, G. Cicirelli, E. Stella, T. D’orazio","doi":"10.1109/ICSENST.2016.7796230","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796230","url":null,"abstract":"High resolution in distance (range) measurements can be achieved by means of accurate instrumentations and precise analytical models. This paper reports an improvement in the estimation of distance measurements performed by an omnidirectional range sensor already presented in literature. This sensor exploits the principle of laser triangulation, together with the advantages brought by catadioptric systems, which allow the reduction of the sensor size without decreasing the resolution. Starting from a known analytical model in two dimensions (2D), the paper shows the development of a fully 3D formulation where all initial constrains are removed to gain in measurement accuracy. Specifically, the ray projection problem is solved by considering that both the emitter and the receiver have general poses in a global system of coordinates. Calibration is thus made to estimate their poses and compensate for any misalignment with respect to the 2D approximation. Results prove an increase in the measurement accuracy due to the more general formulation of the problem, with a remarkable decrease of the uncertainty.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131827328","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":"Energy-efficient flooding with minimum latency for low-duty-cycle WSNs","authors":"Huahua Song, Zhen Xu, Xiangang Wang","doi":"10.1109/ICSENST.2016.7796228","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796228","url":null,"abstract":"Flooding a message from the sink has been widely used in wireless sensor networks (WSNs) for many purposes like synchronization, code dissemination etc. However, relatively little work has been done for flooding in low-duty-cycle WSNs with unreliable links. In the paper, we present an energy-efficient flooding algorithm with minimum latency (EFML) in asynchronous low-duty-cycle WSNs, The key idea is to construct the shortest path tree based on the paths with the minimum delay from the sink to other nodes, then construct a spanning tree with the given delay constraint by locally adjusting the shortest path tree to reduce the energy cost of WSNs. Simulation results show that EFML achieves better performance in terms of flooding delay and energy efficiency.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131143972","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":"Gearbox fault classification using S-transform and convolutional neural network","authors":"Xueqiong Zeng, Yixiao Liao, Weihua Li","doi":"10.1109/ICSENST.2016.7796330","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796330","url":null,"abstract":"This study presents a new method based on convolutional neural network (CNN) for the gearbox fault identification and classification, which does not need the complex feature extraction process as those traditional recognition algorithms do, and it also depress the uncertainty of arbitrary feature selection. The vibration signals of the gearbox under normal and hybrid fault conditions were collected, and all kinds of signals were transformed to time-frequency images by using S-transform. Then the time-frequency matrices were input to the CNN to classify different types of faults. To evaluate the performance of the CNN, other two deep learning algorithms, deep belief network (DBN) and stacked auto-encoder (SAE), were adopted to classify the gearbox faults for comparison. Experiment results demonstrated that CNN can be effectively used for fault classification.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132103060","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}