作者投稿
专家审稿
编辑办公
An Improved Automatic Calibration Equipment for Non-Contact Electrostatic Voltmeter
-
摘要: 非接触式静电电压表也称防爆静电电压表，是用于防止静电危害的重要仪器设备，其测量的准确可靠尤为重要。针对当前非接触式静电电压表校准过程中存在的测量结果不确定度大等问题，依据JJG 192—2019《非接触式静电电压表》检定规程，分析了非接触式静电电压表自动校准过程中不确定度较大的原因，进而研制了一套改进的可远程程控校准的非接触式静电电压表的自动校准装置，包括远程程控的距离调节装置和清零装置、屏蔽电磁干扰以及自动接地装置，实现了操作人员与高压源的完全隔离。实测结果表明：改进后的装置将传统测量方式10%～50%的测量不确定度降至0.3%，满足了非接触式静电电压表的校准需求。Abstract: Non-contact electrostatic voltmeters, also known as explosion-proof electrostatic voltmeters, are important instruments for preventing electrostatic hazards. The accuracy and reliability of their measurements are of great importance. However, the current automatic calibration process suffers from significant measurement uncertainties. In accordance with the JJG 192—2019 "Verification Regulation for Non-contact Electrostatic Voltmeter," this paper analyzes the causes of uncertainty in the automatic calibration process of non-contact electrostatic voltmeters. Based on this analysis, an improved automatic calibration equipment for remote programmable calibration of non-contact electrostatic voltmeters has been developed. The equipment includes remote programmable distance adjustment and zero out, electromagnetic interference shielding, and automatic grounding equipment, which ensure complete isolation between the operator and the high-voltage sources. The actual measurement results show that the improved equipment reduces the systematic measurement uncertainty of 10% to 50% of the traditional method to 0.3%, meeting the calibration requirements of non-contact electrostatic voltmeters.
-
图 1 非接触式静电电压表原理示意图
Figure 1. Schematic diagram of the principle of non-contact electrostatic voltmeter
图 2 标准源法校准连线示意图
Figure 2. Schematic diagram of calibration connection by standard source method
图 5 远程程控距离调节装置原理框图
Figure 5. Schematic diagram of the principle of the remote programmable distance adjustment device
图 6 电磁阀接地装置动作原理图
Figure 6. Schematic diagram of the operating principle of the electromagnetic valve grounding device
图 7 改进前后EX 715样品校准结果比较图
Figure 7. Comparison of calibration results of EX 715 samples before and after improvement
表 1 样品EX 715的测量不确定度
Table 1. Measurement uncertainty of EX 715 samples
校准点/kV 不确定度分量/% uc/% Ur/%
(k＝2)u(Vx) u(K) u(Vn) 5 0.096 0.012 0.0098 0.097 0.19 10 0.045 0.012 0.0058 0.047 0.09 15 0.030 0.012 0.0044 0.032 0.06 20 0.025 0.012 0.0038 0.028 0.06 25 0.119 0.012 0.0033 0.120 0.24 30 0.114 0.012 0.0031 0.115 0.23 35 0.098 0.012 0.0026 0.098 0.20 40 0.085 0.012 0.0025 0.086 0.17 
下载: 导出CSV
-
[1] 孙帅杰, 齐天缘, 肖骥, 等. 高准确度气溶胶静电计的研制及校准[J]. 计量科学与技术, 2021(2): 54-58. [2] 任玲玲. 材料计量论述[J]. 计量科学与技术, 2021(1): 3-7. [3] 郭德华, 高志良, 何积浩, 等. 静电放电测试模型标准现状的分析研究[J]. 中国标准化, 2021(24): 43-53. doi: 10.3969/j.issn.1002-5944.2021.24.007 [4] 陈建志. 静电测试产品及其校准方法[J]. 上海计量测试, 2012, 39(5): 39-40. doi: 10.3969/j.issn.1673-2235.2012.05.013 [5] 国家国防科技工业局. JJG(军工) 192—2019: 非接触式静电电压表[S]. 北京: 中国标准出版社, 2019. [6] 汪丽萍. 静电电压表的计量校准及误差分析[J]. 上海计量测试, 2012, 39(4): 41-42. doi: 10.3969/j.issn.1673-2235.2012.04.016 [7] 董著勇, 盛华庆. 非接触式静电电压表校准装置研究[J]. 自动化与仪器仪表, 2013(1): 20-21. doi: 10.3969/j.issn.1001-9227.2013.01.008 [8] 杨彦. 非接触式静电电压表校验方法研究[J]. 中国计量, 2011(3): 98-99. doi: 10.3969/j.issn.1006-9364.2011.03.039 [9] 史苏娟. FMX-003非接触式静电电压表的校准及不确定度研究[J]. 科技风, 2014(4): 33. doi: 10.3969/j.issn.1671-7341.2014.04.025 [10] 陈冬冬. 基于非接触式静电电压表校验研究[J]. 中国新通信, 2016, 18(3): 147. doi: 10.3969/j.issn.1673-4866.2016.03.104 [11] 曾舒帆, 李亚娟, 朱自科, 等. 指针式电学三表自动检定系统研制[J]. 中国测试, 2019, 45(4): 104-108. doi: 10.11857/j.issn.1674-5124.2018050018 [12] 路瑞军, 刘红光, 李一鸣. 手持式激光测距仪自动检定装置的研究[J]. 中国测试, 2018, 44(S1): 135-138. [13] 孙睿阳, 方信昀. 基于VISA和Django的自动化测试系统的设计与实现[J]. 计量科学与技术, 2020(10): 47-50,31. doi: 10.3969/j.issn.2096-9015.2020.10.13 [14] 闫瑞, 骆昕, 赵强, 等. 基于LabVIEW的冲击法动态力传感器校准装置[J]. 计量科学与技术, 2021, 65(10): 54-57,62. doi: 10.12338/j.issn.2096-9015.2021.0019 [15] 郭小妍. 非接触式静电电压表计量误差分析及校准方法研究[J]. 自动化与仪器仪表, 2019(11): 48-51. doi: 10.14016/j.cnki.1001-9227.2019.11.048 [16] 余欢欢. 非接触式静电电压表的校准及测量结果的不确定度评定[J]. 电世界, 2021, 62(1): 33-34. doi: 10.3969/j.issn.1000-1344.2021.01.013 [17] 白静芬, 孟静, 赵东芳, 等. 交流功率标准构建原理及发展趋势综述[J]. 计量学报, 2022, 43(12): 1533-1537. [18] 杨栋, 何媛, 田天. 数字电压表校准技术研究[J]. 大众用电, 2022, 37(4): 48-49. [19] 陈峰. 多路数字电压表设计与仿真[J]. 山西电子技术, 2021(4): 51-53,61. doi: 10.3969/j.issn.1674-4578.2021.04.017 [20] 苏腾, 郭敏, 刘贵斌, 等. 信号源端口电压驻波比测量方法研究[J]. 计量科学与技术, 2022, 66(7): 33-37. -
点击查看大图
计量
- 文章访问数: 287
- HTML全文浏览量: 224
- PDF下载量: 53
- 被引次数: 0
