飞行器GNSS接收机静电放电干扰效应分析

范宇清; 程二威; 魏明; 张庆龙; 陈亚洲

doi:10.11884/HPLPB201931.190268

飞行器GNSS接收机静电放电干扰效应分析

doi: 10.11884/HPLPB201931.190268

陆军工程大学石家庄校区强电磁场环境模拟与防护技术国防科技重点实验室，石家庄 050005

基金项目: 国家自然科学基金面上项目（51677191）

详细信息

作者简介:
范宇清（1995—），男，硕士研究生，研究方向为电磁环境模拟与电磁防护；120705947@qq.com

中图分类号: TN96
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出版历程
- 收稿日期: 2019-07-19
- 修回日期: 2019-10-19
- 刊出日期: 2019-12-01

Analysis on the interference effect of electrostatic discharge of GNSS receiver on aircraft

National Key Laboratory of Defense Science and Technology on EM Environment Simulation & Protection, Army Engineering University (Shijiazhuang Campus), Shijiazhuang 050005, China

摘要

摘要: 针对飞行器全球卫星导航系统接收机易受静电放电干扰的问题，研究了机体表面电晕放电与机务维修火花放电对接收机的干扰效应。分析了静电放电的时频域特征，使用针球电极与高压源组成的模拟器开展了电晕放电对接收机的前门耦合实验，证明了电晕脉冲产生的辐射场对接收机无明显干扰效应。基于人体金属ESD模型开展了火花放电对接收机的干扰效应实验，发现浪涌电流易导致接收机串口转换芯片电位波动，读写程序主循环卡死，应针对串口端进行静电阻抗器防护。
- GNSS接收机 /
- 静电放电 /
- 干扰效应 /
- 人体金属模型 /
- 电晕放电
Abstract: Aiming at the problem that the Global Navigation Satellite System (GNSS) receiver is susceptible to ESD, the interference effect of the corona discharge on the surface of the aircraft and ESD generated by maintenance on the receiver are studied. The time-frequency domain characteristics of the ESD is analyzed. The front door coupling experiment of corona discharge to the receiver was carried out using a simulator composed of a needle ball electrode and a high voltage source. It is proved that the radiation field generated by the corona pulse has no obvious interference effect on the receiver. Based on the human body metal ESD model, the experiment of the interference effect of spark discharge on the receiver was carried out. It was found that the surge current easily caused potential fluctuation of the serial port conversion chip of the receiver, and the main loop of the read/write program was stuck. ESD protection should be performed for the serial port.
- GNSS receiver /
- electrostatic discharge /
- interference effect /
- human metal model /
- corona discharge

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图 1 电晕脉冲电流时域特征

Figure 1. Time domain characteristics of the current of the corona pulse

下载: 全尺寸图片幻灯片

图 2 电晕脉冲电流频域特征

Figure 2. Frequency domain characteristics of the current of the corona pulse

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图 3 ESD人体金属模型电流时域特征

Figure 3. Time domain characteristics of current in ESD HBM

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图 4 ESD人体金属模型频域特征

Figure 4. Frequency domain characteristics of current in ESD HBM

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图 5 充电电压为正时，电晕放电时域波形及频谱

Figure 5. Time domain waveform and spectrum of corona discharge when the charging voltage is positive

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图 6 充电电压为负时，电晕放电时域波形及频谱

Figure 6. Time domain waveform and spectrum of corona discharge when the charging voltage is negative

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图 7 充电电压为正时，火花放电时域波形及频谱

Figure 7. Time domain waveform and spectrum of spark discharge when the charging voltage is positive

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图 8 充电电压为负时，火花放电时域波形及频谱

Figure 8. Time domain waveform and spectrum of spark discharge when the charging voltage is negative

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图 9 电晕放电模拟器

Figure 9. Corona discharge simulator

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图 10 电晕放电干扰效应实验框图

Figure 10. Block diagram of experimental study of effects of corona discharge

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图 11 接收机放电位置图

Figure 11. Location of the receiver discharge

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表 1 A、B、C、D四个面干扰电压临界值

Table 1. Thresholds of four face-interference-voltages of the receiver

discharge position	air discharge voltage (horizontal coupling plate)/kV	air discharge voltage (vertical coupling plate)/kV	direct contact discharge voltage/kV
side A	26	28	6
side B	19	7	6
side C	15	22	5
side D	10	21	26

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表 2 接收机各部位干扰电压临界值

Table 2. Intercept voltage threshold for each part of the receiver

discharge position as shown in fig. 11(b)	direct contact discharge voltage/kV
1	no effect
2	19
3	8
4	4
5	11

下载: 导出CSV

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