防静电工作区内人体静电电位在线监测技术研究

Study on Online Monitor of Human Body Electrostatic Potential in Electrostatic Protection Area

人体静电是静电防护工程中主要危害源之一。本文采用接触式静电电位测量方法,提出了基于RS485总线的防静电工作区(简称EPA)内人体静电电位在线监测系统,开发了EPA内人员操作时防静电腕带的静电电位在线监测装置及其配套夹具,专门设计了监测装置和整个系统的测试方法。测试结果表明,该方案实现了静电电位连续监测、限值报警和记录可追溯,能够有效提高航天型号科研生产场所的静电防护在线计量保障能力。

Human body electrostatic discharge is one of the main hazardous factors in the field of electrostatic discharge protection engineering. According to the contact measurement for electrostatic potential,this paper puts forward a online monitor system based on RS485 bus for human body electrostatic potential,develops one type of anti-static wrist strap and its fixture used in EPA（Electrostatic discharge Protection Area） operation,and designs the specialized measurement method for device and the whole system. The test results shows that the design realizes electrostatic continuous measurement,limit alarming and record traceability,and helps strengthen the ability of electrostatic protection and online measurement in aerospace industry workshop.