| 一种可程控约瑟夫森直流电压标准装置 |
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| 引用本文： | 刘民,李继东,严明,蔡建臻.一种可程控约瑟夫森直流电压标准装置[J].电子测量与仪器学报,2009,23(10):8-12. |
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| 作者姓名： | 刘民 李继东 严明 蔡建臻 |
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| 作者单位： | 1. 中国空间技术研究院北京东方计量测试技术研究所,北京,100086;北京航空航天大学自动化学院,北京,100191
2. 中国空间技术研究院北京东方计量测试技术研究所,北京,100086 |
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| 摘 要： | 在直流电压量值体系中,约瑟夫森直流电压标准已经成为我国电压单位（伏特）复现的基准,利用约瑟夫森效应,直流电压单位直接溯源到频率和约瑟夫森常数KJ-90。本文介绍了约瑟夫森结的结构原理,以及一种可程控约瑟夫森电压标准装置的工作原理和特点。在直流电压-10～＋10V测量范围内,可以用于检定校准固态电压标准器、标准电池和直流分压器,也可以输出约瑟夫森直流电压,用于校准数字电压表10V以下量程以及线性度。
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| 关 键 词： | 约瑟夫森电压标准装置 约瑟夫森效应 直流电压标准 量值传递 |
PC-controlled Josephson DC voltage standard equipment |
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| Affiliation: | Liu Min Li Jidong Yan Ming Cai Jianzhen (1. Beijing Orient Institute of Measurement ＆ Test, China Academy of Space Technology Beijing 100086, China; 2. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics Beijing 100191, China) |
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| Abstract: | In the DC voltage metrology field, the Josephson DC voltage standard has played the role of the volt-unit reproduced national reference standard. By the Josephson Effect, the DC volt-unit can trace to frequency-unit and Josephson constant number KJ-90. This paper introduces the structure principle of Josephson junctions and the equipment of PC-controlled Josephson Voltage Standard, analyzes its working principle and characteristic. During the DC range-10～＋10V, this equipment can be used to calibrate solid-state voltage standard, standard cell, and DC voltage divider, also can output Josephson DC voltage to calibrate the linearity of Digital Voltage Meter during the range-10～＋10V. |
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| Keywords: | Josephson voltage standard Josephson effect DC voltage standard calibration |
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