Results 1 to 10 of about 4,311 (165)

“全国大型光电子技术交流会”今年10月在武汉召开

open access: yesGuangtongxin yanjiu, 1985
<正> 为纪念激光器诞生二十五周年,中国电子学会和光学学会等组织决定于1985年10月在武汉召开“全国大型光电子技术交流会”并举办展览会。会议交流内容以激光、红外、光电技术在国民经济各方面的应用为主,其中包括激光与红外通信、激光测距、激光与红外跟踪,激光加工,光纤应用、遥感技术、红外成象、红外测温与加热,及其在医学、生物学中的应用等。会议同时准备举办全国光电子技术应用推广展览。会议还准备出版《中国光电子集锦》
解金山
doaj   +2 more sources

Design and Application of Three-Dimensional Digitization and Intelligent Operation System for Converter Station [PDF]

open access: yes, 2023
[Introduction] In response to the pain points of the operation and maintenance of the converter station, the design methods of the three-dimensional digitization and intelligent operation system are proposed, and the actual application is performed in ...
Hao ZHANG   +5 more
core   +1 more source

Research on the Application of Digital Twin Technology in Power Grid Engineering [PDF]

open access: yes, 2023
[Introduction] In view of the digital transformation under the development of big data and the Internet, the application status of digital twin technology in power grid engineering is analyzed.
Hao ZHANG   +4 more
core   +1 more source

Factors influencing incomplete fusion in automatic girth welding of oil and gas pipelines [PDF]

open access: yes, 2023
In view of the incomplete fusion occurred in the automatic girth welding of oil and gas pipelines, the factors influencing the incomplete fusion were studied with the welding procedure test and numerical simulation in combination.
Yongli SUI, Zhili LUO
core   +1 more source

GIS红外温度传感系统的设计表征研究

open access: yesGaoya dianqi, 2021
文中设计并制造了一种可用于测量气体绝缘金属封闭开关设备(gas insulated switchgear,GIS)触头以及母线等关键位置温度的红外测温系统,可对GIS设备的过热故障进行监控和预警。本测温系统设计红外传感测温模组对温度数据进行模数转换、滤波、校准、补偿后通过远距离无线电(long range radio,LORA)协议进行无线传输。通过定制化的红外介质窗口和密封系统实现红外信号的通路并保证设备的气密性和可靠性。将测温模组安装于红外介质窗口,实现对测温模组的安装固定。针对触头和母线发射率低 ...
李盈   +6 more
doaj  

Experimental study on combustion optimization to alleviate fouling on heating surface of a Zhundong coal Boiler [PDF]

open access: yes, 2023
In 2021, the price of most of the domestic coal skyrocketed, affecting the stable supply of electric power supply in some regions, while the price of Xinjiang Zhundong coal remains stable at a low level.
Dafu MA   +5 more
core   +1 more source

环境条件对基于无人机红外检测的零值绝缘子检测判据的影响研究

open access: yesDianci bileiqi, 2023
随着红外测量技术的不断进步,对绝缘子状态进行红外热像检测逐步应用于电网的日常巡检中,但测量结果受环境因素影响显著。以输电线路现场运行中瓷绝缘子作为研究对象,分别在不同光照强度、湿度、温度与风速下采集绝缘子的红外图像,研究环境因素对绝缘子红外检测的影响规律。研究结果表明,当采用基于绝缘子串温度曲线的判别方法时,光照强度容易引起零值绝缘子的误判,温度变化对零值绝缘子检测没有影响;湿度变化会影响绝缘子钢帽的温升;在强风条件下,各绝缘子钢帽温度相同,不适合进行绝缘子红外检测。研究成果可用于指导电网红外巡检工作 ...
尹林   +9 more
doaj  

双向渐进结构优化法原理及其动力学优化研究 [PDF]

open access: yes, 2017
针对等效静载荷优化(ESLO)计算效率低、优化流程复杂的问题,将双向渐进结构法引入到等效静载荷优化中。以双向渐进结构法作为优化迭代环方法,对动态响应拓扑优化流程进行了改进,并重新定义了收敛准则;通过2个算例验证了该方法的可行性。研究结果表明,当设计循环次数n大于1时,所提出的方法每次设计外循环消耗的时间小于原始方法消耗的时间,因此整体优化时间减少了;说明该方法适用于结构动态响应拓扑优化 ...
蓝萌
core   +1 more source

红外测温法研究Al-Mg合金中的Portevin-Le Chatelier效应

open access: yes, 2009
Plastic deformation is accompanied by the conversion of mechanical energy into heat. The deformation heterogeneity related to the Portevin-Le Chatelier effect (PLC) in Al-Mg alloy during a tensile test at ambient temperature is investigated through ...
曹鹏涛, 张青川, 肖锐, 熊少敏
semanticscholar   +1 more source

输电线路复合绝缘子温升现象及其成因分析

open access: yesDianci bileiqi, 2022
近年复合绝缘子酥朽故障引起的温升现象逐步增多,是复合绝缘子应用面临的主要故障类型。然而除芯棒酥朽缺陷外,引起复合绝缘子温升的成因还包括绝缘子表面积污放电、护套吸水受潮、阳光不均匀直射等原因。本研究收集不同温升类型复合绝缘子的红外图谱,并统计其温升的部位分布特点、温升数值等红外特征。其次,基于有限元分析和检测试验,分析各温升现象的成因和机理。最后基于现场统计分析的红外图谱特征、检测试验和仿真分析,总结温升缺陷复合绝缘子温升特点及其识别规则,为现场复合绝缘子红外测温诊断提供了理论指导。
王晓杰   +4 more
doaj  

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