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2016 10th International Conference on Sensing Technology (ICST)最新文献

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Research on modeling and filtering method of atomic spin gyroscope's random drift 原子自旋陀螺仪随机漂移的建模与滤波方法研究
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796319
He Shuangshuang, Chen Xiyuan
Atomic spin gyroscope is a new kind of gyro based on quantum mechanics, with ultra-high precision, simple structure, small size, etc. Therefore, to study the characteristics of random drift for improving the accuracy of atomic spin gyro is significant. Firstly, through the analysis of the gyro static output data and preprocessing, the stationary time series gyro random error has obtained. Then established the gyro drift error model based on time series ARIMA, and test the applicability of the model through analysis of residual. Finally, through the establishment of the Kalman filter based on the model to filter out the gyro random drift, and the use of Allan variance analysis of the filtering results. The results show that the modeling and filtering method and can effectively reduce the atomic spin gyro random drift error, the angle random walk coefficient raised an order of magnitude compared with traditional ARMA modeling method, so as to effectively enhance the output accuracy of atomic spin gyro and stability of the system.
原子自旋陀螺仪是一种基于量子力学的新型陀螺,具有超高精度、结构简单、体积小等特点。因此,研究随机漂移特性对提高原子自旋陀螺精度具有重要意义。首先,通过对陀螺静态输出数据的分析和预处理,得到了陀螺随机误差的平稳时间序列。然后建立了基于时间序列ARIMA的陀螺漂移误差模型,并通过残差分析验证了模型的适用性。最后,通过建立基于卡尔曼滤波的模型来滤除陀螺随机漂移,并利用Allan方差对滤波结果进行分析。结果表明,该建模和滤波方法能有效地减小原子自旋陀螺的随机漂移误差,使角度随机游走系数比传统的ARMA建模方法提高了一个数量级,从而有效地提高了原子自旋陀螺的输出精度和系统的稳定性。
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引用次数: 0
A continuous-flow concentrator based on ion concentration polarization 一种基于离子浓度极化的连续流浓缩器
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796323
J. Tong, C. Bian, S. Xia, Hailong Pi
In this paper, we present a novel and simple method to fabricate a continuous-flow concentrator based on ion concentration polarization phenomenon (ICP). With the capillary force, the Nafion solution can fill the Nafion resin channels, and nanoporous junctions were created to generate ICP. To demonstrate the concentration ability of the device, we conducted the experiments with Rhodamine 6G (positively charged) and fluorescein sodium (negatively charged). As a result, the device is more appropriate to concentrate the negatively charged species with concentration up to 2-fold. For further application, the method is convenient and simple to achieve a high-throughput concentration flow and a higher preconcentration factor.
本文提出了一种利用离子浓度极化现象(ICP)制作连续流浓缩器的新方法。在毛细管力的作用下,Nafion溶液可以填充Nafion树脂通道,并形成纳米孔连接来产生ICP。为了证明该装置的浓缩能力,我们用罗丹明6G(带正电)和荧光素钠(带负电)进行了实验。因此,该装置更适合浓缩带负电荷的物种,浓度可达2倍。对于进一步的应用,该方法方便、简单,可实现高通量浓缩流程和较高的预富集系数。
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引用次数: 0
Chaotic circuit design methodology and case study 混沌电路设计方法与案例研究
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796275
Xiao Peng, Lin Wenshi, Feng Yejia, Cui Li
As an important signal source, chaotic circuit can play key blocks of Codec in fields of weak signal detection and high speed security communication and non-linear control. First we review the chaotic circuit design methodology into three kinds of methods like blocks stickiness with 3-blocks, decreasing-or increasing-type, for root cause of period three implying chaos. Then two new chaotic circuits are designed and demonstrated in core features of 1L-1C plus 1 multiplier and 1 operational amplifier, and 2L-3C plus 1T-MOSFET. The phase diagrams and FFT spectrums of tested independent variables show that new circuits are chaotic with the greatest Lyapunov's Exponents more than zero. At last our conclusions throw up both the birth of Lee's circuits under logic steps and deep thinking of precision measurements based on chaos in voltage-or current-mode.
混沌电路作为一种重要的信号源,在微弱信号检测、高速安全通信、非线性控制等领域扮演着编解码器的关键模块。首先,我们将混沌电路的设计方法分为三种方法,分别是3块粘块法、递减法和递增法,这是三周期混沌的根本原因。然后设计并演示了两种新的混沌电路,其核心特征是1L-1C + 1个乘法器和1个运算放大器,以及2L-3C + 1T-MOSFET。测试自变量的相图和FFT谱表明,新电路是混沌的,最大李雅普诺夫指数大于零。最后,我们的结论提出了李氏电路在逻辑步骤下的诞生,以及基于电压或电流模式混沌的精密测量的深刻思考。
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引用次数: 2
Study on spinning process and constant tension control system of absorbable suture 可吸收缝线纺丝工艺及恒张力控制系统的研究
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796248
X. Sui, Shuo Wang
In the producing process of absorbable suture, in order to solve the problem of suture diameter and the tensile strength are uneven, constant tension control system of absorbable suture is designed. Detection device using three rollers tension sensor whose sensitive element is the resistance strain gauge; Control device using programmable controller; Execution device using three-phase motor; Display device using we in view touch screen. Experiments show that the constant tension control system can control the controlled tension error in less than 0.1N. The system has good real-time performance and high reliability. The suture made by the constant tension control system is completely in line with the standard of the USP thirty-second edition of the collagen suture.
在可吸收缝线的生产过程中,为了解决缝线直径和抗拉强度不均匀的问题,设计了可吸收缝线恒张力控制系统。检测装置采用三辊式张力传感器,其灵敏元件为电阻应变片;控制装置采用可编程控制器;执行装置采用三相电机;显示设备采用可视触摸屏。实验表明,恒张力控制系统能将被控张力误差控制在0.1N以内。该系统实时性好,可靠性高。恒张力控制系统制作的缝线完全符合USP第三十二版胶原蛋白缝线的标准。
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引用次数: 2
Transparent biocompatible sensor patches for touch sensitive prosthetic limbs 用于触觉敏感假肢的透明生物相容性传感器贴片
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796261
A. Nag, S. Mukhopadhyay, J. Kosel
The paper presents the fabrication of transparent, flexible sensor patches developed using a casting technique with polydimethylsiloxane (PDMS) as substrate and a nanocomposite of carbon nanotubes (CNTs) and PDMS as interdigital electrodes. The electrodes act as strain sensitive capacitor. The prototypes were used as touch sensitive sensors attached to the limbs. Experiments results show the sensitivity of the patches towards tactile sensing. The results are very promising and can play a key role in the development of a cost efficient sensing system attached to prosthetic limbs.
本文介绍了一种透明、柔性传感器贴片的制造方法,采用铸造技术,以聚二甲基硅氧烷(PDMS)为衬底,碳纳米管(CNTs)和PDMS的纳米复合材料作为数字间电极。电极充当应变敏感电容器。原型机被用作连接在四肢上的触摸敏感传感器。实验结果表明了该贴片对触觉的敏感性。该结果非常有希望,并且可以在开发具有成本效益的假肢传感系统方面发挥关键作用。
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引用次数: 14
Sparse representation of transients based on improved matching pursuit algorithm for gear fault diagnosis 基于改进匹配追踪算法的瞬态稀疏表示齿轮故障诊断
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796263
Lin Wang, G. Cai, Juanjuan Shi, Weiguo Huang, Zhongkui Zhu
Localized faults on gears tend to result in periodic transient components under a constant speed operation. Extraction of such transient components is crucially important for gear fault diagnosis. Sparse decomposition based on matching pursuit (MP) is one of the effective methods to extract the weak feature contaminated by strong background noise and has been extensively used for transient feature extraction. In this paper, a practical and effective method is proposed for MP based sparse representation, which is enhanced in terms of sparse dictionary construction and computational complexity of MP. A special wavelet basis matching with the transients is developed to construct the sparse dictionary for fault vibration signal. The inner product operation in MP is replaced by cross-correlation implemented by fast Fourier transform (FFT) to address the problem of enormous computational complexity of MP algorithm. Simulation study shows that the transient feature can be effectively extracted and the computational efficiency is essentially improved by the proposed method. Application in transient components extraction of gearbox vibration signal from an automotive gearbox shows that the proposed method can extract the fault feature effectively.
齿轮的局部故障往往导致在恒速运行下的周期性瞬态部件。这些瞬态分量的提取对齿轮故障诊断至关重要。基于匹配追踪的稀疏分解是提取受强背景噪声污染的弱特征的有效方法之一,在瞬态特征提取中得到了广泛的应用。本文提出了一种实用有效的基于多聚体的稀疏表示方法,该方法从稀疏字典构造和多聚体的计算复杂度两方面进行了改进。提出了一种与瞬态相匹配的特殊小波基,用于构造故障振动信号的稀疏字典。该算法采用快速傅里叶变换(FFT)实现互相关,取代了内积运算,解决了多目标算法计算量大的问题。仿真研究表明,该方法可以有效地提取瞬态特征,大大提高了计算效率。应用于某汽车齿轮箱振动信号的瞬态分量提取,结果表明该方法能有效提取故障特征。
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引用次数: 1
Fault feature extraction of planetary gear using an optimized matching pursuit decomposition 基于优化匹配追踪分解的行星齿轮故障特征提取
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796331
Weigang Wen, Wei-dong Cheng
This paper presents a novel method for fault feature extraction of planetary gear using optimized matching pursuit algorithm, which is applied to vibration sensor signal feature extraction and fault diagnosis of planetary gearbox. This method combined optimization algorithm, planetary gearbox vibration model, and matching pursuit to implement planet gear fault characteristic extraction. Genetic algorithm and matching pursuit were integrated to decompose the vibration sensor signals into parameterized planetary gearbox model bases. Then the parameters of model bases were composited to extract fault feature of planetary gear. Different planet gear faults were tested for verifying the presented methods in different scenarios. All results of experiment analysis demonstrated its effectiveness and reliability.
提出了一种基于优化匹配追踪算法的行星齿轮故障特征提取方法,并将其应用于行星齿轮箱振动传感器信号特征提取和故障诊断中。该方法将优化算法、行星齿轮箱振动模型和匹配追踪相结合,实现行星齿轮故障特征提取。将遗传算法与匹配追踪相结合,将振动传感器信号分解为参数化行星齿轮箱模型库。然后对模型库参数进行组合,提取行星齿轮的故障特征。针对不同的行星齿轮故障,在不同的场景下对所提出的方法进行了验证。实验分析结果证明了该方法的有效性和可靠性。
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引用次数: 0
Study on an improved differential box-counting approach for gray-level variation of images 图像灰度变化的改进差分盒计数方法研究
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796217
Kexue Lai, Cancan Li, Tao He, Lang Chen, Kun Yu, Weisong Zhou
The fractal dimension, an important parameter as a measure of roughness of image, has been widely utilized to image classification, recognition and segmentation etc. Differential box-counting approach is widely applied to estimate fractal dimension in the calculation approaches of fractal dimension. However, this approach can not accurately calculate fractal dimension of image which have smaller gray level. In response to the issue, this paper proposes an improved differential box-counting method on the height h' of box. In order to verify the superiority of the improved algorithm, DBC, RDBC, SDBC and improved DBC are separately utilized to estimate fractal dimensions of random images with different gray levels and texture image with different sizes, and then to compare. Experimental results demonstrate that: improved differential box-counting approach is more stable for random images with different gray levels.
分形维数作为衡量图像粗糙度的重要参数,已广泛应用于图像分类、识别和分割等领域。在分形维数的计算方法中,微分盒计数法被广泛应用于分形维数的估计。然而,对于灰度值较小的图像,该方法不能准确地计算出分形维数。针对这一问题,本文提出了一种改进的基于盒高h′的差分计数方法。为了验证改进算法的优越性,分别利用DBC、RDBC、SDBC和改进DBC对不同灰度的随机图像和不同尺寸的纹理图像进行分形维数估计,并进行比较。实验结果表明:改进的差分盒计数方法对于不同灰度的随机图像具有更好的稳定性。
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引用次数: 12
Analysis on parameters of grating eddy current displacement sensor 光栅涡流位移传感器参数分析
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796281
L. Kun, T. Wei, Zhao Hui, Yang Jingjing
The grating eddy current sensor is based on the principle of lateral eddy current. Its precision is greatly influenced by the coil and reflector parameters. It is important to analyze and optimize those parameters so as to improve the precision. Therefore, it is necessary to make further research on how the sensor nonlinear error is influenced by parameters, such as reflector size, shape and coil turns, so that the sensor can be tuned for more high precision occasions. Models of the coil and reflector of the grating eddy current sensor are established with finite elements method (Maxwell software) in this paper. Reflectors with different size and shape and coils with different turns are simulated and calculated. The analytical results demonstrate that the coil turns should be as many as possible and reflector with semicircular on both sides is better. Besides, the optimal reflector length (the length corresponding to the smallest nonlinear error) has a linear relationship with coil width and length. The research has provided a guide to set reasonable parameters of coil and reflector to improve the precision.
光栅涡流传感器是基于横向涡流原理设计的。其精度受线圈和反射器参数的影响较大。对这些参数进行分析和优化是提高测量精度的重要手段。因此,有必要进一步研究反射面尺寸、形状和线圈匝数等参数对传感器非线性误差的影响,以便对传感器进行调优,以适应更高精度的场合。本文利用Maxwell软件建立了光栅涡流传感器线圈和反射器的有限元模型。对不同尺寸形状的反射镜和不同匝数的线圈进行了仿真计算。分析结果表明,线圈匝数应尽可能多,两侧为半圆形的反射镜效果较好。此外,最佳反射器长度(非线性误差最小对应的长度)与线圈宽度和长度呈线性关系。该研究为合理设置线圈和反射器参数,提高测量精度提供了指导。
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引用次数: 0
Design and reliability analysis for underwater control system in OUC-Raman instrument node of seafloor observatory network 海底观测网OUC-Raman仪器节点水下控制系统设计及可靠性分析
Pub Date : 2016-11-01 DOI: 10.1109/ICSENST.2016.7796308
Xiaorui Liu, Funjun Qi, Wangquan Ye, Zhiyu Song, R. Zheng
OUC-Raman (OUC, Ocean University of China) underwater detection system based on Raman-spectroscopy is designed to operate as instrument node in seafloor cabled observatory network. Considering requirement and standard of seafloor cabled observatory network, this article designs control system for OUC-Raman. It's composed of power management module and control module. Power management module ensures electronic character of OUC-Raman instrument node meeting standard of seafloor cabled observatory network, control module enables shore-based terminal to manipulate underwater system. This control system has redundancy structure to ensure its reliability in seafloor environment. Up to now, OUC-Raman instrument node has received multiple tests with satisfactory results.
基于拉曼光谱的海底探测系统(OUC - raman,中国海洋大学)被设计为海底电缆观测站网络中的仪器节点。考虑到海底电缆观测站网络的要求和标准,设计了海底电缆拉曼控制系统。它由电源管理模块和控制模块组成。电源管理模块确保OUC-Raman仪器节点的电子特性满足海底电缆观测站网络标准,控制模块使岸基终端能够操纵水下系统。该控制系统具有冗余结构,保证了其在海底环境下的可靠性。到目前为止,ouc -拉曼仪器节点已经接受了多次测试,取得了满意的结果。
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引用次数: 1
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2016 10th International Conference on Sensing Technology (ICST)
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