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基于触摸屏的夹具磁性开关信号故障诊断方法
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作者 丁勇杰 《汽车实用技术》 2023年第16期109-112,共4页
焊夹具是一种对白车身进行定位和固定的工装,主要由气缸、气管、阀岛、磁性开关、操作按钮盒等构成,在出现电气信号故障后因磁性开关数量多难以快速定位,导致维修处理时间长。基于这一问题,文章通过对夹具的控制方式和触摸屏的应用技术... 焊夹具是一种对白车身进行定位和固定的工装,主要由气缸、气管、阀岛、磁性开关、操作按钮盒等构成,在出现电气信号故障后因磁性开关数量多难以快速定位,导致维修处理时间长。基于这一问题,文章通过对夹具的控制方式和触摸屏的应用技术进行分析,设计一种能够将夹具磁性开关信号状态快速反映到人机界面(HMI)上的诊断方法,并在HMI上建立三维视图和状态图形,以此来快速诊断夹具的磁性开关信号故障,减少设备的停机时间,为生产效率提供必要的保障。 展开更多
关键词 焊夹具 编程控制器 HMI 磁性开关信号 触摸屏
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智能型磁性屑末检测信号器
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作者 阳新元 吴红美 《设备管理与维修》 2019年第12期152-154,共3页
介绍两种国外的智能型磁性屑末检测信号器先进的功能及用途,分析工作原理并比较其优缺点。
关键词 智能型 磁性屑末检测信号 燃烧熔化 检测内部电路
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模式识别技术在人民币检伪中的应用研究 被引量:2
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作者 索双富 许汝真 +1 位作者 孟国营 杨杰 《机械设计与制造》 北大核心 2015年第11期192-196,200,共6页
纸币的防伪与检伪水平关系着国家的金融安全,研究模式识别技术在人民币检伪中的应用,是为了探究如何不断提高人民币真伪判定的准确率,从而为相关的设备开发奠定基础。首先对模式识别技术做了简要总结。从人民币宽度检测和磁性信号检测... 纸币的防伪与检伪水平关系着国家的金融安全,研究模式识别技术在人民币检伪中的应用,是为了探究如何不断提高人民币真伪判定的准确率,从而为相关的设备开发奠定基础。首先对模式识别技术做了简要总结。从人民币宽度检测和磁性信号检测两个方面,对模式识别技术在人民币检伪中的具体应用进行讨论。针对货币检测过程中的信号变化,以宽度检测和磁性信号的检测为实例,对信号的采集、信号的处理、真伪的判断开展了研究。相关研究结果可以应用在线性CCD信号的处理和分析之中。为货币的真伪检测方法与判定策略提供了参考实例。 展开更多
关键词 模式识别 人民币检伪 宽度 磁性信号 识别方法
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Periodic electromagnetic signals as potential precursor for seismic activity 被引量:1
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作者 YONG Shan-shan WANG Xin-an +4 位作者 ZHANG Xing GUO Qin-meng WANG Jing YANG Chao JIANG Bing-hui 《Journal of Central South University》 SCIE EI CAS CSCD 2021年第8期2463-2471,共9页
Electromagnetic signals may be a promising precursor to seismic activity which has been observed in many case studies in past decades.However,the correlation and causation between the electromagnetic signals and the s... Electromagnetic signals may be a promising precursor to seismic activity which has been observed in many case studies in past decades.However,the correlation and causation between the electromagnetic signals and the seismic activity are still unclear without intensive observation network.In order to find seismoelectromagnetic phenomenon,we deployed AETA(acoustic and electromagnetic testing all-in-one system),a high-density multi-component seismic monitoring system in the China Earthquake Science Experiment site(CESE,in Sichuan Province and Yunnan Province,China)and the capital circle(areas with a distance which is≤200 km from Beijing),to record electromagnetic and geo-acoustic data across 0.1 Hz−10 kHz.In the course of data collection,we discovered an electromagnetic waveform that occurs on a daily basis.Because the signal generally coincides with sunrise and sunset,we named this phenomenon the SRSS(Sunrise-Sunset)waveform.After conducting three statistical tests based on seismicity and SRSS,we determined that the SRSS waveform is roughly correlated with the onset of seismic activity.It generally occurs at the regions where seismicity occurs.This discovery might have significant implications with respect to the future of earthquake prediction. 展开更多
关键词 seismic precursor periodic electromagnetic signal Sunrise-Sunset(SRSS)waveform
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Development of a quantum-dot-labelled magnetic immunoassay method for circulating colorectal cancer cell detection 被引量:6
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作者 Maria Gazouli Anna Lyberopoulou +5 位作者 Pericles Pericleous Spyros Rizos Gerassimos Aravantinos Nikolaos Nikiteas Nicholas P Anagnou Efstathios P Efstathopoulos 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第32期4419-4426,共8页
AIM:To detect of colorectal cancer(CRC) circulating tumour cells(CTCs) surface antigens,we present an assay incorporating cadmium selenide quantum dots(QDs) in these paper.METHODS:The principle of the assay is the imm... AIM:To detect of colorectal cancer(CRC) circulating tumour cells(CTCs) surface antigens,we present an assay incorporating cadmium selenide quantum dots(QDs) in these paper.METHODS:The principle of the assay is the immunomagnetic separation of CTCs from body fluids in conjunction with QDs,using specific antibody biomarkers:epithelial cell adhesion molecule antibody,and monoclonal cytokeratin 19 antibody.The detection signal was acquired from the fluorescence signal of QDs.For the evaluation of the performance,the method under study was used to isolate the human colon adenocarcinoma cell line(DLD-1) and CTCs from CRC patients' peripheral blood.RESULTS:The minimum detection limit of the assay was defined to 10 DLD-1 CRC cells/mL as fluorescence was measured with a spectrofluorometer.Fluorescenceactivated cell sorting analysis and Real Time RT-PCR,they both have also been used to evaluate the performance of the described method.In conclusion,we developed a simple,sensitive,efficient and of lower cost(than the existing ones) method for the detection of CRC CTCs in human samples.We have accomplished these results by using magnetic bead isolation and subsequent QD fluorescence detection.CONCLUSION:The method described here can be easily adjusted for any other protein target of either the CTC or the host. 展开更多
关键词 Circulating tumor cells Cancer Quantum dots Nanoprobes Micrometastasis
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Rockburst hazard assessment based on electromagnetic emission in Xingfu Mine 被引量:1
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《Journal of Coal Science & Engineering(China)》 2012年第1期25-28,共4页
In order to research the danger caused by the rockburst, the electromagnetic emission (EME) in the coal rock was monitored and analyzed. The higher the stress in the coal is, the stronger the deformation and the fai... In order to research the danger caused by the rockburst, the electromagnetic emission (EME) in the coal rock was monitored and analyzed. The higher the stress in the coal is, the stronger the deformation and the failure are, and also the signal of the EME will be. The EME is increased by a relatively large margin before the slight shock and rockburst break out at spot. Therefore, some methods to monitor and forecast the danger of rockburst were proposed, including the critical point and devia- tion values, which was by non-contract method. In the end, the observation of EME in Xingfu was used to analyze and forecast the danger level by the rockburst. Then, the measures were proposed to prevent and cure the rockburst. 展开更多
关键词 ROCKBURST EME critical point deviation value
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4″套管井电缆输送射孔施工中的技术难点及解决措施
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作者 汤涛 刘兵 代文庆 《化工管理》 2016年第20期203-,共1页
针对4″套管井电缆输送射孔施工中的技术难点——套管接箍磁定位信号多峰。从磁性定位器的工作原理入手,分析原因提出并实施了一系列改良措施,在后续的施工中取得了较好的效果。
关键词 4″套管井 射孔 磁性定位器信号多峰
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Magnetic particles and cadmium sulfide nanoparticles tagging for signal-amplifying detection of nucleic acids 被引量:4
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作者 DONG XiaoYa, ZHAO WeiWei, XU JingJuan & CHEN HongYuan State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China 《Science China Chemistry》 SCIE EI CAS 2011年第8期1304-1310,共7页
A versatile DNA recognition system using cadmium sulfide nanoparticles (CdS NPs) as labels was proposed for ultrasensitive detection of specific sequence DNA based on target recycling. This strategy utilized the magne... A versatile DNA recognition system using cadmium sulfide nanoparticles (CdS NPs) as labels was proposed for ultrasensitive detection of specific sequence DNA based on target recycling. This strategy utilized the magnetic particles (MNPs) for the immobilization of linker DNA and CdS NPs and the subsequent target DNA hybridization. Using the unique characteristic of nicking endonuclease for cutting one specific strand of double strand DNA (ds DNA), the linker DNA could be transected and the target DNA could be liberated for re-hybridization and hence the amount of released CdS NPs was enhanced. Due to the advantage of the MNPs and signal amplification from the target recycling, the analyte DNA could be detected by the square-wave stripping voltammetry (SWV) in a wide linear range from 0.4 fM to 100 fM with the detection limit down to 0.08 fM. The proposed DNA detection strategy possesses high sensitivity, satisfactory reproducibility and excellent stability, which might have potential in other DNA biological assays. 展开更多
关键词 CdS nanoparticles square wave stripping voltammetry nicking endonuclease electrochemical DNA assay
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31p NMR study of magnetic phase transitions of MnP single crystal under 2 GPa pressure
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作者 GuoZhi Fan Bo Zhao +2 位作者 Wei Wu Ping Zheng JianLin Luo 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2016年第5期7-10,共4页
Superconductivity on the border of the long-range magnetic order has been discovered in Mn P under high pressures. In order to investigate the nature of the magnetic properties adjacent to the superconducting state, w... Superconductivity on the border of the long-range magnetic order has been discovered in Mn P under high pressures. In order to investigate the nature of the magnetic properties adjacent to the superconducting state, we performed zero-field 31 P NMR for Mn P single crystal under ambient and hydrostatic pressure of 2 GPa, respectively. Radio frequency power level was used to determine whether NMR signal originates from a helical state or not. When 2 GPa pressure was applied, the signal from helical state exists even above 160 K, while that from the ferromagnetic phase was not observed. Our NMR results indicate that the magnetic phase which is adjacent to the superconducting state is in a helical magnetic structure. 展开更多
关键词 superconducting materials magnetic phase transitions nuclear magnetic resonance MNP
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