SUN Jian, WANG Jian-ling
(College of Information and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China)
Abstract： A new probe for atmospheric electric field mill is introduced. It consists of three parts: signal acquisition circuit for atmospheric electric field, preamplifier circuit and phase sensitive detection circuit. The signal acquisition circuit adopts the double-stator structure to form differential input circuit, thus double-precision is obtained. Preamplifier circuit is made of current-to-voltage (I-V) conversion circuit, differential amplifier circtuit and secondary amplifying circuit. The polarity of electric field is obtained via phase sensitive detection circuit. Simulation results are obtained using Multisim, and the feasibility of the designed probe is verified.
Key words： atmospheric electric field mill； probe； double-stator; differential amplifier circuit; preamplifier circuit
CLD number： TM937 Document code： A
Article ID： 1674-8042(2014)01-0015-06 doi： 10.3969/j.issn.1674-8042.2014.01.003
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一种新型地面大气电场仪探头的设计
孙健， 王建岭
（山东科技大学 信息与电气工程学院，山东 青岛 266590）
摘要:介绍了一种由大气电场采集部分、 前置放大电路和相敏检波电路构成的差动式大气电场仪探头的设计。 采集部分采用了由双定子构成的差动输入电路， 使精度提高一倍； 前置放大电路部分由I-V转换电路、 差分放大电路和次级放大电路构成； 相敏检波电路用于检验电场的极性。 经过Multisim仿真， 得到了较为理想的仿真结果， 证明了设计的有效性。
关键词:大气电场仪； 探头； 双定子； 差分放大电路； 前置放大电路
引用格式：SUN Jian, WANG Jian-ling. A new probe for atmospheric electric field mill. Journal of Measurement Science and Instrumentation, 2014, 5(1): 15-20. [doi: 10.3969/j.issn.1674-8042.2014.01.003]
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