ZnS:Cu电致发光电压传感器及其温度漂移补偿

李长胜; 陈佳; 王伟岐; 郑岩

doi:10.3788/CO.20171004.0514

ZnS:Cu电致发光电压传感器及其温度漂移补偿

doi: 10.3788/CO.20171004.0514

李长胜^1, ,,
陈佳¹,
王伟岐¹,
郑岩²

1.
北京航空航天大学仪器科学与光电工程学院光电工程系, 北京 100191
2.
上海科润光电技术有限公司, 上海 201619

详细信息

作者简介:
李长胜(1967-), 男, 河北青龙人, 博士, 副教授, 2003年于日本群马大学获得博士学位, 主要从事物理光学、光学传感与器件、光通信等方面的研究

通讯作者:
李长胜, E-mail:cli@buaa.edu.cn

中图分类号: TN383;TM835.1
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出版历程
- 收稿日期: 2016-12-26
- 修回日期: 2017-01-08
- 刊出日期: 2017-08-01

ZnS:Cu electroluminescent voltage sensor and its temperature drift compensation

1.
Department of Optoelectronics Engineering, School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China
2.
Shanghai Kerun Phospher Technology Co. Ltd., Shanghai 201619, China

More Information

Corresponding author: LI Chang-sheng, E-mail:cli@buaa.edu.cn

摘要

摘要: 利用ZnS：Cu电致发光粉末与环氧树脂胶混合，设计制作了一种梯形电极结构的电压传感单元，实现了电致发光电压传感器输出信号的温度漂移补偿。电致发光电压传感信号通过2根塑料光纤传输到2个硅光电探测器，并选择其开路电压作为传感器的输出信号。在同一外加电压条件下，梯形电极区域内的电场分布是不均匀的，因而不同场点的发光亮度不同。通过测量梯形电极区域内2个不同发光点的发光强度随外加电压的变化，并对两路输出电压传感信号进行数据拟合与计算，可获知被测电压的有效值，并可实现对输出信号温度漂移的补偿。在-40~60℃范围内，采用上述温度漂移补偿方法测量了有效值在0.7~1.5 kV范围内的工频电压，传感器输出信号的非线性误差低于1.6%，验证了该温度漂移补偿方法的有效性。
- 光学电压传感器 /
- 电致发光效应 /
- 高电压测量 /
- 温度漂移补偿
Abstract: A ladder-shaped voltage sensing unit is designed and fabricated using ZnS:Cu powder and epoxy adhesive, and the temperature drift compensation of an electroluminescent voltage sensing signal is implemented. Two channels of electroluminescent voltage sensing signals are transmitted to two photo-detectors using two pieces of plastic optical fibers. Open circuit voltages of the two photo-detectors are used as output voltage sensing signals. The electric field distribution is non-uniform within the ladder-shaped electroluminescent voltage sensing unit, and thus the electroluminescent brightness is also non-uniform under a same applied voltage. AC voltage sensing signals can be obtained by measuring the electroluminescent brightness at two different positions on the ladder-shaped voltage sensing unit. The temperature drift compensation existing in output voltage sensing signal can be achieved by an optimal calculation and fitting of experimental data. 50 Hz AC voltage in the range of 0.7-1.5 kV is measured, and the nonlinear error is less than 1.6% in the range of -40-60℃. This result demonstrates the effectiveness of the proposed temperature drift compensation method.
- optical voltage sensor /
- electroluminescent effect /
- high voltage measurement /
- temperature drift compensation

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图 1 基于ZnS\:Cu粉末的电致发光电压传感单元结构示意图

Figure 1. Structure diagram of electroluminescent voltage sensing unit based on ZnS\:Cu powder

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图 2 电致发光电压传感特性的实验装置

Figure 2. Experimental setup of electroluminescent voltage sensing performances

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图 3 在不同外加电压下，梯形电压传感单元样品2的电致发光照片

Figure 3. Photographs of electroluminescence from the second ladder-shaped voltage sensing unit under different applied voltages

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图 4 当U_i=1 200 V时，对应于梯形电压传感单元样品2的开路电压U_oc随不同发光场点位置x变化的曲线

Figure 4. Curves of open-circuit voltage U_oc versus different electroluminescent positions on the second ladder-shaped voltage sensing unit when U_i=1 200 V

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图 5 工频电压传感信号波形

Figure 5. Waveforms of electroluminescent voltage sensing signals of 50 Hz AC voltage

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图 6 开路电压U_oc1和U_oc2随外加电压有效值U_i变化的曲线

Figure 6. Curves of open circuit voltage U_oc1 and U_oc2 versus applied voltage U_i

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图 7 梯形电压传感单元的输入阻抗随外加电压变化的曲线

Figure 7. Curves of input impedance Z_i of ladder-shaped voltage sensing unit versus applied voltage

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图 8 开路电压与被测电压及温度的关系

Figure 8. Open circuit voltage versus applied voltage and temperature

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图 9 当U_i=1 200 V时开路电压随温度变化的曲线

Figure 9. Curves of open circuit voltage versus temperature under the condition of U_i=1 200 V

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图 10 U_i=1 200 V时，输出电压在补偿前(U_oc1和U_oc2)和补偿后(U_om)随温度变化的曲线

Figure 10. Curves of output voltages versus temperature without compensation (U_oc1 and U_oc2) and with compensation (U_om) under the condition of U_i=1 200 V

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图 11 温度漂移补偿后传感器输出电压U_om随外加电压U_i的实验数据及线性拟合直线

Figure 11. Experimental data of output voltage U_om with temperature compensation and applied voltages U_i, and their linear fitting line

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图 12 U_i=1 200 V时，输入阻抗与温度的关系

Figure 12. Relationship of input impedance and temperature under the condition of U_i=1 200 V

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