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分析了几种常用电池内阻测量方法,提出了一种在线快速检测蓄电池内阻的直流充电法。实验数据表明,用直流充电法分析蓄电池内阻同样可以获得与其他测量方法相同的结论。通过图表清晰地描述了蓄电池内阻在充电过程中的变化情况,探讨了直流充电法在蓄电池充电和运行管理中应用的可行性和实用价值。 相似文献
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变电站直流系统中蓄电池是非常重要的后备使用电源,对于突发断电时保证电源的持续供应至关重要.然而,与深度放电使用情况相比,蓄电池长期处于浮充状态,很难检测到蓄电池的保有容量.如何在电池日常运行过程中及时检测到蓄电池的劣化程度,是"后备"方式使用蓄电池的一大难题.目前,变电站直流在线监测管理系统能够较好地解决这一技术难题.为保证蓄电池在线监测效率与质量,本文对变电站直流在线监测管理系统应用技术做了深入的探讨,以供参考. 相似文献
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蓄电池内阻在线监测装置的研究 总被引:2,自引:0,他引:2
比较了直流放电法和交流注入法在蓄电池内阻测量中的特点,提出了一种采用交流注入法在线测量蓄电池内阻的装置,详细阐述其工作原理及采用锁相放大法实现内阻测量的实际电路,通过采用平衡调制解调芯片AD630,有效地抑制了噪声和干扰,并且简化了设计。 相似文献
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马卫兵 《电信工程技术与标准化》2006,19(6):89-92
本文介绍了基站免维护蓄电池在直流供电系统中重要地位,基站免维护蓄电池需要维护,浮充电压不能判断蓄电池容量,论述了在线测试蓄电池判断蓄电池容量的简单实用的方法. 相似文献
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蓄电池监测数据中其内阻数据是一项非常宝贵的信息资源,内阻可以很好地反映蓄电池内部的真实状况。当前主要采用的蓄电池内阻测试方法为瞬间直流放电法(直流测量)和交流信号注入法(交流测量),两种方法各有特点。 相似文献
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The article describes a model representation of radar probing data in form of a mixture of background and target samples, which is the sum of two random variables with very different parameters. For model development we research the behavior of the central moments of the distribution mix without assuming the distribution law form. An example it is described the detection of the signal at the output of compression system of chirp ionosonde. 相似文献
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解决IP网QoS问题是目前通信领域的研究热点之一.虽然研究已经取得了一定的进展,但人们对于IP 网QoS本身的含义及相关的问题还有着不同的理解.本文将从IP网QoS的定义入手讨论相关的一些问题以及解决IP网QoS问题所做的各种努力. 相似文献
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《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1968,56(6):1024-1032
Assuming that visual responses are due to the action of particles on the membrane of the visual cells, the stochastic variability of the response should be a function of the number of particles producing it. Quantitative predictions can be made with the aid of a model proposed in previous articles. It is found that responses produced in visual cells of Limulus by absorption of a single photon have the stochastic properties which would be expected if the response to one photon were brought about by 25 particles. It is concluded from this that the processes leading to visual responses produce multiplication of particles. The effects of temperature and of metabolic poisons suggest that these processes are of chemical nature. 相似文献
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By means of exact conformal mapping method we have defined character of dependence of squares amounts of angular part of film
element on angled part dimension. We propose relations, approximating obtained dependence. Calculation results and experimental
researches of large-scale models are represented. 相似文献
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A. M. Emel’yanov 《Semiconductors》2010,44(9):1134-1139
A method for analyzing the luminescence spectra of semiconductors is suggested. The method is based on differentiation of
the spectra. The potentialities of the method are demonstrated for luminescence in the region of the fundamental absorption
edge of Si and SiGe alloy single crystals. The method is superior in accuracy to previously known luminescence methods of
determining the band gap of indirect-gap semiconductors and practically insensitive to different conditions of outputting
radiation from the sample. 相似文献
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“计算机组成原理”设计性实践教学模式研究 总被引:1,自引:0,他引:1
本文阐述了"计算机组成原理"设计性实验教学的重要性,对设计性实验教学的目的和基本特征进行了归纳,对"计算机组成原理"设计性实验教学的现状进行了调查,对存在的问题进行了较深入的分析;在此基础上.对组成原理设计性实验的教学模式进行了研究,对设计性实验的体系进行了初步设计,并对"计算机组成原理"设计性实验的实施方法进行了探讨. 相似文献