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2019 IEEE 4th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)最新文献

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Design for RTDB Memory Structure of DCS DCS中RTDB存储器结构的设计
Ran Zhang, Xi Feng, Wennan Feng, Y. Hu, Xiaoke Tang
Real-time database (RTDB) is an important part of the distributed control system (DCS), which is equivalent to a data processing center and functions as a data exchange area. The RTDB kernel carries the main features of the RTDB, supports task timing constraints, maintains a large amount of shared data, and ensures the integrity, consistency and real-time performance of the data. It also provides data access services for historical databases and human-computer interaction client programs, and is a bridge for data interaction between controllers and clients. The data in the real-time library is stored in memory. Therefore, the design of the RTDB memory structure directly affects the quality of the entire DCS system.
实时数据库(RTDB)是集散控制系统(DCS)的重要组成部分,相当于一个数据处理中心,起到数据交换的作用。RTDB内核承载了RTDB的主要特性,支持任务定时约束,维护大量共享数据,保证数据的完整性、一致性和实时性。它还为历史数据库和人机交互客户端程序提供数据访问服务,是控制器与客户端数据交互的桥梁。实时库中的数据存储在内存中。因此,RTDB存储结构的设计直接影响到整个DCS系统的质量。
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引用次数: 0
PS-InSAR Analysis of Collapsed Dam and Extraction of Flood Inundation Areas in Laos Using Sentinel-1 SAR Images 基于Sentinel-1 SAR影像的老挝溃坝PS-InSAR分析及洪水淹没区域提取
Shibo Cheng, Wenhui Zhao, Zhiping Yin
Interferometric Synthetic Aperture Radar (InSAR) technique can potentially measure millimetre-scale changes in deformation by two or more SAR images. In this paper, thirty Sentinel-1 SAR images were processed with Persistent Scatterer InSAR (PS-InSAR) method over the collapsed dam in Laos to measure its deformation in the last year before the collapse. Then the deformation map of the dam is achieved. The map show that unusual subsidence occurred in the final two months prior to the collapse. Several feature points distributed near the collapse of the dam were analyzed. The maximum accumulated subsidence exceeded -20 mm in the last year. Our results indicate that PS-InSAR technology for deformation monitoring of dams can be used as an early warning method to prevent other similar accidents. Furthermore, we extracted the flood inundation map from two Sentinel-1 images. It can play a role in post-disaster relief work.
干涉合成孔径雷达(InSAR)技术可以通过两张或多张SAR图像测量毫米尺度的变形变化。本文利用30幅Sentinel-1 SAR图像,利用PS-InSAR (Persistent scattering InSAR)方法对老挝溃决大坝进行处理,测量大坝溃决前一年的变形情况。进而得到大坝的变形图。地图显示,在崩塌前的最后两个月,发生了不寻常的下沉。对溃坝附近分布的几个特征点进行了分析。去年最大累计沉降超过-20 mm。研究结果表明,PS-InSAR技术可作为大坝变形监测的预警手段,预防类似事故的发生。此外,我们从两幅Sentinel-1图像中提取洪水淹没图。它可以在灾后救援工作中发挥作用。
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引用次数: 3
IAEAC 2019 Table of Contents 2019年国际原子能机构会议目录
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引用次数: 0
Remote Monitoring System of four-wheel Drive Robot based on Web and Cloud Platform 基于Web和云平台的四轮驱动机器人远程监控系统
Zhang Chenxi, Miao Zhonghua, He Changxin, Bai Yucen
Aiming at the shortcomings of existing four-wheeled robot remote monitoring system, such as poor mobility, complex operation and high consumption, a monitoring system based on web and cloud platform is developed. The system is mainly composed of the perception layer responsible for data acquisition, the transmission layer responsible for data transmission, and the application layer responsible for remote monitoring by users. Among them, the sensor and CPU are used to collect the job information of the robot, and then the collected data is sent to the Cloud Server by MQTT protocol through the MQTT module. The data is rendered from the Cloud Server to the page using TCP/IP protocol and AXJX. The experimental results show that the system has good stability, good real-time performance and ideal monitoring effect. It effectively solves the problems of real-time on-site monitoring and remote monitoring of robot operation information.
针对现有四轮机器人远程监控系统移动性差、操作复杂、消耗大等缺点,开发了基于web和云平台的监控系统。该系统主要由负责数据采集的感知层、负责数据传输的传输层和负责用户远程监控的应用层组成。其中,传感器和CPU用于采集机器人的作业信息,然后将采集到的数据通过MQTT模块通过MQTT协议发送到云服务器。使用TCP/IP协议和AXJX将数据从云服务器呈现到页面。实验结果表明,该系统稳定性好,实时性好,监控效果理想。有效地解决了机器人运行信息的现场实时监控和远程监控问题。
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引用次数: 1
Cylindrical conformal broadband array antenna based on defective ground structure 基于缺陷接地结构的圆柱共形宽带阵列天线
Yuhe Liu, Ting Wang, Peilin Zhong, Sijie Wang
The existing cylindrical conformal ultra-wideband antennas are mostly unit antennas, although the working bandwidth is wider, the gain is low. When the array antenna is conformal on the surface of the cylinder, the working bandwidth is narrowed because of the deformation of the array antenna. To solve this problem, a cylindrical conformal array antenna based on rectangular defective ground structure(DGS) is proposed in this paper. The antenna is designed as a cylindrical conformal wideband array antenna with a center frequency of 10 GHz, which broadens the bandwidth by loading rectangular defective ground structures on the backplane. The simulation results show that the bandwidth of the cylindrical conformal array antenna increases from 0.2GHz to 1.6GHz after loading the rectangular defective ground structure, and the gain of the antenna increases from 12.3dB to 14.1dB. The operating frequency bandwidth of the conformal array antenna is effectively increased without adding the thickness of the dielectric layer, which is more advantageous for miniaturization and integration of the array antenna.
现有的圆柱共形超宽带天线多为单元天线,虽然工作带宽较宽,但增益较低。当阵列天线在圆柱体表面共形时,由于阵列天线的变形,使工作带宽变窄。为了解决这一问题,本文提出了一种基于矩形缺陷接地结构的圆柱共形阵天线。天线设计为中心频率为10ghz的圆柱形共形宽带阵列天线,通过在背板上加载矩形缺陷接地结构来拓宽带宽。仿真结果表明,加载矩形缺陷接地结构后,圆柱共形阵天线的带宽从0.2GHz增加到1.6GHz,天线增益从12.3dB增加到14.1dB。在不增加介质层厚度的情况下,有效地增加了共形阵列天线的工作频率带宽,更有利于阵列天线的小型化和集成化。
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引用次数: 1
Stress Analysis of Submarine Cable Tension and Torsion Test Device Based on Finite Element Method 基于有限元法的海底电缆拉扭试验装置应力分析
Chen Guo-zhi, Le Yanjie, Yue Junpeng, Lv Anqiang, Lu Zhengtong, Xu Jianliang
In order to ensure that the tension and torsion test system can complete the normal test of submarine cable torsion, it is very important to analyze the maximum torque that the system can withstand. In this paper, the finite element simulation software ANSYS is used to model the submarine cable tension and torsion test system. The torque of 1kNm, 5kNm and 10kNm is applied to the model and solved. The main force position of the torsion device was evaluated by analyzing the changes of displacement, stress and strain after the model was twisted. The results show that after applying the maximum allowable torque of 10kNm to the submarine cable tension and torsion test system, the system is not damaged, and the displacement, stress and strain changes are consistent with the actual situation, and the work of torsion testing of the submarine cable can be completed. This paper provides a method and data reference for the evaluation of the operating parameters of the submarine cable tension and torsion experimental system.
为了保证拉扭测试系统能够完成海底电缆扭扭的正常测试,分析系统所能承受的最大扭矩是非常重要的。本文采用有限元仿真软件ANSYS对海底电缆拉扭试验系统进行建模。将1kNm、5kNm和10kNm的扭矩应用于模型并求解。通过分析模型扭转后的位移、应力和应变变化,确定扭转装置的受力位置。结果表明,对海底电缆拉力和扭转测试系统施加10kNm的最大允许扭矩后,系统未受到破坏,位移、应力和应变变化与实际情况一致,可完成海底电缆扭转测试工作。本文为海底电缆拉扭实验系统运行参数的评估提供了方法和数据参考。
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引用次数: 0
Research and Optimization of Wireless Mesh Network Routing Protocol with Multiple Criterions 多准则无线网状网络路由协议的研究与优化
Jinfeng Lin, Zuoxue Liu, Jianmei Dai
Batman-adv (Better Approach to Mobile Ad-hoc Networking Advanced) routing protocol is a rapidly developing wireless Mesh network routing protocol in recent years. Due to its good portability, open source code, high dynamic organization and high security, More suitable for use in disaster relief, plateau shooting range and other places. When the routing criteria of the protocol are deeply studied, it is found that the protocol has a single criterion and is prone to instability when sending large-capacity data, causing frequent switching of routes, which in turn leads to packet loss. Aiming at this problem, the signal strength is introduced and the routing criteria are redesigned. The experimental results show that the new routing criteria can improve the stability of the routing protocol.
Batman-adv (Better Approach to Mobile Ad-hoc Networking Advanced)路由协议是近年来发展迅速的无线Mesh网络路由协议。由于其良好的可移植性、开源代码、高动态组织和高安全性,更适合在救灾、高原射击场等场所使用。当深入研究该协议的路由标准时,发现该协议标准单一,在发送大容量数据时容易出现不稳定,导致路由频繁切换,从而导致丢包。针对这一问题,引入了信号强度,重新设计了路由准则。实验结果表明,新的路由准则可以提高路由协议的稳定性。
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引用次数: 0
Ship target detection algorithm based on improved deep learning 基于改进深度学习的舰船目标检测算法
Haixia Fan, Liankai Chen
Faster R-CNN algorithm is a deep learning network model based on regional suggestion network, which is applied to the field of target detection and recognition. Extracting a small number of pixels in the original image and generating a downscaled image can improve the detection efficiency of Faster R-CNN. Scene semantic narrowing is be directed at specific types of regions and geographical locations in the image. By performing targeted analysis on these regions, it can be interpreted more carefully, and the image is better applied to Faster R-CNN. The deep convolutional network with the narrowing function of the theme is studied. The main factors that affect the understanding of image content accumulated by human visual cognitive experience and computer vision research are summarized into various themes, and the appropriate theme is selected as a narrow sub-network according to the task. Realize the optimization of the Faster R-CNN algorithm by implementing a collaborative deep network with clear functions in the overall black box and subnet. The experimental results show that the proposed method can significantly shorten the detection time of the algorithm while improving the detection accuracy of Faster R-CNN algorithm.
Faster R-CNN算法是一种基于区域建议网络的深度学习网络模型,主要应用于目标检测与识别领域。从原始图像中提取少量像素,生成降尺度图像,可以提高Faster R-CNN的检测效率。场景语义缩小是针对图像中特定类型的区域和地理位置。通过对这些区域进行有针对性的分析,可以更仔细地解释图像,更好地将图像应用于Faster R-CNN。研究了具有主题缩小功能的深度卷积网络。将人类视觉认知经验和计算机视觉研究积累的影响图像内容理解的主要因素归纳为各个主题,并根据任务选择合适的主题作为窄子网络。通过在整体黑箱和子网中实现功能清晰的协同深度网络,实现Faster R-CNN算法的优化。实验结果表明,该方法可以显著缩短算法的检测时间,同时提高Faster R-CNN算法的检测精度。
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引用次数: 1
Research on Sparse Code Shrinkage denoise in Underwater 3D Laser Scanning Images 水下三维激光扫描图像稀疏码收缩降噪研究
Junjie Liu
Noise removal is the pre-stage and essential step for many image processing tasks. Sometimes it is hard to have correct exposure for camera in underwater environment. In general, we need to have long exposure time to collect the weak light signal which increase the background electrical noise and higher than the signal. Underwater laser scanning is such special case with white laser stripe and dark background images. Hence, noise including which dots, lumps have heavy impact to our laser image. This paper discuss underwater laser scanning image denoise and presents the method based on Sparse code shrinkage algorithm to reduce such noise effect in final reconstructed 3D model. The comparative study using natural and real 3D underwater scanning images is presented on the experimental section.
噪声去除是许多图像处理任务的前置和关键步骤。在水下环境中,相机有时很难获得正确的曝光。一般来说,我们需要有较长的曝光时间来收集微弱的光信号,这增加了背景电噪声,高于信号。水下激光扫描就是这种特殊情况,它具有白色激光条纹和深色背景图像。因此,包括点、团块在内的噪声对我们的激光图像有很大的影响。讨论了水下激光扫描图像的噪声问题,提出了基于稀疏编码收缩算法的水下激光扫描图像去噪方法。在实验剖面上对自然和真实的水下三维扫描图像进行了对比研究。
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引用次数: 0
A Noval Mirror Training Strategy Based On Kinematics 一种新的基于运动学的镜像训练策略
Yingchao Huang
Aiming at the problem of limb motor dysfunction in stroke patients after operation, a noval mirror training strategy based on kinematics is proposed in this paper. Firstly, the pose of the end effector based on the common coordinate system is obtained by establishing forward kinematic modeling of dual-arm upper limb rehabilitation robot; Secondly, the pose of the end effector of patient’s impaired limb in the common coordinate system is calculated by the mirror relationship of the bilateral limbs, and the joint angles is obtained according to the inverse kinematics, which realizing the function of the mirror training. Finally, the experiment is designed and the tester’s training data is collected and a series of evaluation indicators are obtained to reflect the training effect in different traininig stages. The results show that this strategy has a certain effect on improving the motor function of the impaired limb. In the future, the factors affecting the strategy will be further optimized to improve the rehabilitation effect.
针对脑卒中患者术后肢体运动功能障碍问题,提出了一种基于运动学的镜像训练策略。首先,通过建立双臂上肢康复机器人正运动学模型,得到基于通用坐标系的末端执行器位姿;其次,利用双侧肢体镜像关系计算患者残肢末端执行器在公共坐标系下的位姿,并根据运动学逆求关节角度,实现镜像训练的功能;最后进行实验设计,收集测试者的训练数据,得出一系列反映不同训练阶段训练效果的评价指标。结果表明,该策略对改善残肢运动功能有一定的效果。未来将进一步优化影响策略的因素,提高康复效果。
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引用次数: 0
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2019 IEEE 4th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC)
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