某型无人机收发信机静电放电防护加固

杜宝舟; 陈亚洲; 程二威; 张冬晓

doi:10.11884/HPLPB201830.170286

某型无人机收发信机静电放电防护加固

doi: 10.11884/HPLPB201830.170286

陆军工程大学石家庄校区静电与电磁防护研究所，河北石家庄 050003

基金项目:

国家自然科学基金项目 51677191

详细信息

作者简介:
杜宝舟(1993-)，男，硕士，主要研究方向为装备电磁环境效应及防护加固；1497991715@qq.com

通讯作者:
陈亚洲(1975-)，男，博士，教授，博士生导师，主要研究方向为强电磁场环境模拟、电磁环境效应与防护；chen_yazhou@sina.com

中图分类号: TJ43;O441
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- 被引次数: 0
出版历程
- 收稿日期: 2017-07-12
- 修回日期: 2017-09-27
- 刊出日期: 2018-01-15

Electrostatic discharge protection and reinforcement for certain type of UAV transceiver

Institute of Electrostatic and Electromagnetic Protection, Shijiazhuang Campus of Army Engineering University, Shijiazhuang 050003, China

摘要

摘要: 无人机交换机芯片易被静电放电(ESD)电磁脉冲损坏，严重影响无人机数据链正常通信。针对此问题，通过搭建人体-金属ESD电路模型并进行仿真分析，发现所选用的TVS防护器件对15 kV等级的ESD防护效果显著。分别对加装TVS防护器件前后的收发信机电路进行了ESD电磁脉冲抗扰度对比试验。试验结果表明，加装防护器件后的电路对ESD电磁脉冲的防护能力最大提升7.4倍。
- ESD电磁脉冲 /
- TVS /
- 电磁防护 /
- ESD抗扰度 /
- 无人机 /
Abstract: The fact that switch chip in the UAV is easily damaged by the ESD electromagnetic pulse severely affects the normal communication of UAV data link. To solve the problem, this paper presents an approach by building human body-metal ESD circuit model and proceeds with a simulation analysis. It is shown that the protection effect of the chosen TVS device is significant under the 15 kV level of ESD. A comparison test of immunity to ESD electromagnetic pulse was carried out for the transceiver circuit before and after the installation of TVS protection devices respectively. The test shows that when the protection devices was installed in the circuit, the protection capacity against ESD electromagnetic pulse was maximally enhanced 7.4 times that before the installation.
- electrostatic discharge /
- electromagnetic pulse /
- TVS /
- electromagnetic pulse /
- ESD immunity /
- UAV

HTML全文

图 1 IEC61000-4-2规定的ESD电流波形

Figure 1. IEC61000-4-2 specified ESD current waveform

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图 2 ESD等效电路仿真模型

Figure 2. ESD equivalent circuit simulation model

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图 3 2 kV等级放电负载端电压与电流

Figure 3. Current and voltage of load side at 2 kV level discharge

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图 4 ESD防护电路仿真模型

Figure 4. ESD protection circuit simulation model

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图 5 15 kV等级放电负载端电流

Figure 5. Current of load side at 15 kV level discharge

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图 6 ESD模拟发生器

Figure 6. ESD analog generator

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表 1 电流波形参数

Table 1. Current waveform parameters

voltage of discharge/kV	I_p/A	t_r/ns	i_{30 ns}/A	i_{60 ns}/A
2	7.5	0.7~1	4	2
4	15.0	0.7~1	8	4
6	22.5	0.7~1	12	6
8	30.0	0.7~1	16	8

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表 2 传统瞬态抑制器性能参数对比

Table 2. Comparison of performance parameters of traditional transient suppressors

parameter	spark gap	gas discharge tube	MOV	TVS
response time	ms	ns	ns	ps
protection level	poor	general	fine	fine
flow rate	large	large	large	little
stability	poor	general	general	good
clamping voltage	hundreds of volts	dozens of volts	a few volts	a few volts

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