Basic Study of Electrostatic Induced Voltage in a Metal Box Caused by Movement of a Charged Body

带电体运动引起金属盒内静电感应电压的基础研究

• 批准号: 17560304
• 负责人: OHKUMA Yasunori
• 金额: $ 2.37万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560304/
• 关键词: electrostatic induced voltage; movement of charged body; partly opened metal box; optical electric field sensor

Movement of electrostatic charged objects, such as a human body, near electronic equipment placed in a partly opened metal box can lead to the appearance of voltage induced in conductive parts of the equipment. The electrostatic induced voltage can cause malfunctions and even breakdowns of the equipment. The purpose of this study is to give a guideline for preventing a malfunction or a failure of electronic apparatus.1. Measurement of the electrostatic induced voltageIn this study, the experimental device represented a situation in which a charged human body passes through near a partly opened metal box. And the induced voltage between two metal sheets having different areas placed in the metal box was measured. Measurement of the induced voltage was carried out using a sphere gap and an electromagnetic wave sensor in the metal box. Experimental results indicated that as follows. (1)The induced voltage between two metal sheets become higher when the area of metal sheet increased and th … More at this voltage depended only slightly on the area of grounded metal sheet. (2) Within the limits of this experiment, when the area of an ungrounded metal sheet is smaller than 0.18cm^2, the induced voltage can be reduced to less than the voltage that electronic components are broken. (3) When a metal sheet of one side was grounded, electrostatic discharge by the induced voltage occurred twice, but when two metal sheets were ungrounded, electrostatic discharge occurred many times.2. Measurement of the electromagnetic noise by the electric dischargeIn this study, for the measurement of the change in time of the induced voltage and the electromagnetic noise which was occurred with the sphere gap by the induced voltage in the metal box, the characteristic of an optical electric field sensor was examined by the measurement of the electric field strength. Experimental results indicated that it could be used as a surface electrometer the optical electric field sensor by calculating conversion equation and that the characteristics of the electromagnetic noise are different with value of the electric discharge voltage. Less

带静电的物体（如人体）靠近放置在部分打开的金属盒中的电子设备移动，可能导致设备导电部件中出现感应电压。静电感应电压会引起设备的故障甚至击穿。本研究的目的是为防止电子设备的故障或故障提供一个指南。静电感应电压的测量在这项研究中，实验装置代表了带电人体穿过部分打开的金属盒附近的情况。并测量了放置在金属盒中的具有不同面积的两个金属片之间的感应电压。感应电压的测量是使用球形间隙和金属盒中的电磁波传感器进行的。实验结果表明：（1）两金属片间的感应电压随金属片面积的增大而增大， ...更多信息 在该电压下，仅轻微地取决于接地金属片的面积。(2)在本实验范围内，当未接地金属片的面积小于0.18cm ^2时，感应电压可以降低到小于电子元件断裂的电压。(3)当一侧的金属片接地时，感应电压引起的静电放电发生两次，而当两个金属片不接地时，静电放电发生多次.通过放电测量电磁噪声在本研究中，为了测量感应电压的时间变化以及由金属盒中的感应电压引起的球间隙产生的电磁噪声，通过测量电场强度来检查光学电场传感器的特性。实验结果表明，通过计算转换方程，该光电传感器可作为表面静电计使用，其电磁噪声特性随放电电压的大小而不同。少