3D Measurement Technology Based on Shape From Silhouette

摘要 三维测量技术已成为现代测试技术中一个重要的研究领域。SFS(ShapeFromSilhouette)是被动式3D测量方法，即为视觉测量技术，具有非接触式测量的优点：测量速度快，软工件、薄工件、不可接触的高精密工件可直接测量等。近些年来，越来越受到人们的重视。 本文以SFS三维测量技术为主线，提出了一种将SFS技术应用在三坐标机上的新方法，构建了一套自动的视觉测量硬件系统；采用MATLAB和VC混合编程，完成了视觉测量软件系统;采用所搭建的视觉测量系统对物体进行三维测量，通过采集图像、提取轮廓、应用SFS技术完成对物体的三维重构，完整地获得了物体的三维模型。 本文的主要特色及创新...ABSTRACT The 3D measurement of objects of modern testing technology has become an important research field. SFS (Shape From Silhouette) is a passive non-contact 3D measurement method, which is used in 3D modeling and reverse engineering etc. Using SfS method, a simple, low cost, efficient and accurate 3D information acquisition system can be established and the request of the surface material o...学位：工学硕士院系专业：物理与机电工程学院机电工程系_测试计量技术及仪器学号：1992006115188

继电保护实验教学的改进与探索

探讨了自主创新综合实验方案,加强了识图能力和动手能力训练,改进了实验内容、教学方法、成绩构成等继电保护实验教学环节。有利于激发学生的学习激情,充分发挥学生的主观能动性和参与积极性,提高学生的实践创新能力和解决问题的能力,取得了良好的教学效果。厦门大学新世纪高等教育教学改革工程立项项目的研究成

PLC在电厂电动机星-三角启动中的应用

文章简要介绍了PLC星三角降压启动原理及应用程序软件。由于PLC与传统继电器在电动机启动方面相比具有显著的优势,抗振性(AC)和电磁兼容性(EMC)好,冲击电流小等,可靠性、稳定性和安全性都更高。据此详细介绍了西门子PLC在电动机星-三角启动中的应用。对于PLC在相关行业和领域电动机启动的应用有着较强的通用性与参考价值

3D vision measurement based on shape from silhouette

提出了一种将SHAPE frOM SIlHOuETTE(SfS)技术应用在三坐标机上的新方法,即用摄像机获取图像,用三坐标机作移动平台,构建视觉测量系统,应用SfS技术对物体进行三维测量。该视觉测量系统扩展了坐标机功能,扩大了其应用范围。实验结果表明,该视觉测量系统具有SfS技术和坐标机两者的优点,重构物体三维模型的过程简单快捷,精度高于0.4MM,其结果可作为坐标机智能测量的基础,是一种非常实用的方法。Shape from Silhouette(SfS) is a passive non-contact 3D measurement method,which is used in 3D modeling and reverse engineering etc.Using SfS method,a simple,low cost,efficient and accurate 3D information acquisition system can be established and the request of the surface material of the object that is measured is low.Compared to laser scanning,SfS can also measure an object with hole.A new method that Shape from Silhouette is applied to measure the objects in coordinate metrology is proposed,that is the vision measurement system is made up of the camera,the coordinate metrology and SfS.Intelligent measurement is carried out on the vision measurement system to 3D reconstruction and consequently the precision is improved.The functions of coordinate metrology are expanded and the applications of coordinate metrology are enlarged by the system.The running experiment results on the vision measurement system show that this system has SfS and coordinate metrology's advantages.The approach to 3D reconstruction is very efficient and the accuracy is higher than 0.4mm.This approach is a much applied way and it can be a foundation of intelligent measurement

基于深度学习的金免疫层析试条定量检测方法

为解决免疫层析试条定量检测问题,搭建了基于深度置信网络和反向传播神经网络构成的深度学习模型。基于免疫层析试条图像的特点,搭建的模型通过学习本文提出的图像灰度特征、距离特征以及差分特征实现准确的图像分割。最后,对分割的图像进行定量分析实现最终的定量检测。实验结果表明,本文提出的方法能够实现免疫层析定量检测。国家自然科学基金(项目编号:61403319);;福建省自然科学基金(项目编号:2015J05131

Design of Adjustable Electric Kick Snore Apparatus Based on Sound Sensor

论述了基于声学传感器的电子戒鼾器的工作原理,介绍了设计等相关电路,给出基于声学传感器的电子戒鼾器的调试数据。调试结果表明,设计的电子戒鼾器的电路合理、可靠且具有不同的人可根据自身的情况来调节电子戒鼾器的输出电压功能。经临床试验,戒鼾效果良好,研制的电子戒鼾器具有很好的市场应用前景。The principle of sound sensor is introduced in this paper.This article illuminates detailedly the principle of electric kick snore apparatus and designed circuit.And the test data of electric kick snore apparatus with sound sensor is given.The result of test indicates that the designed circuit of electric kick snore apparatus is rational and steady on the whole,different people can adjust the output voltage.By clinical testing,we find that the effect of using this adjustable electric kick snore apparatus is good.So the adjustable electric kick snore apparatus has brilliant application in market

Vehicle noise main control technology and the important parts

Conference Name:3rd International Conference on Automatic Control and Mechatronic Engineering, ICACME 2014. Conference Address: Xiamen, China. Time:June 13, 2014 - June 14, 2014.The rules of the China vehicle noise control are summarized. By analyzing the sources of vehicle noise, the important parts of vehicle noise are introduced. The main control technology and measures of reducing the noise of vehicles are presented. Because of the complexity of the vehicle noise control, at present there are a lot of technology and applications are blank in the research area.Reduce vehicle noise is an important subject of future automotive technology. ? (2014) Trans Tech Publications, Switzerland

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors