| 直流弱电流测量与误差分析 |
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| 引用本文： | 贾桂华,张 萍,邓国荣.直流弱电流测量与误差分析[J].太赫兹科学与电子信息学报,2009,7(6):609-612. |
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| 作者姓名： | 贾桂华 张 萍 邓国荣 |
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| 作者单位： | 中国工程物理研究院,计量测试中心,四川,绵阳,621900 |
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| 摘 要： | 介绍了分流式和反馈式电流表测量直流电流的基本原理。根据静电计测量直流弱电流信号的电路模型，分析了电流表输入端压降、源内阻、源电容、正确接地、连接导线、环境湿度等因素产生的测量误差，并且给出了相应的解决方案。
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| 关 键 词： | 弱电流测量 静电计 反馈 接地 漏电流 |
| 收稿时间： | 2009/6/1 0:00:00 |
| 修稿时间： | 2009/7/3 0:00:00 |
Measurement and error analysis of low current |
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| JIA Gui-hu,ZHANG Ping and DENG Guo-rong.Measurement and error analysis of low current[J].Journal of Terahertz Science and Electronic Information Technology,2009,7(6):609-612. |
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| Authors: | JIA Gui-hu ZHANG Ping and DENG Guo-rong |
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| Affiliation: | (Metrology and Testing Center, China Academy of Engineering Physic, Mianyang Sichuan 621900, China) |
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| Abstract: | This article introduces the principle of current measurement for shunt ammeter and feedback ammeter. According to the low current measurement circuit model by electrometer, the measurement errors caused by a variety of factors, such as ammeter voltage burden, source resistor, source capacitance, grounding, connection wire, and humidity, are analyzed. Some solutions are put forward. |
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| Keywords: | low current measurement electrometer feedback grounding leakage current |
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