The Influence Of Electrostatic Discharge On The Electronic Equipment In Data Center

With the development of computer technology and information communication technology, electronic equipments are widely used in office and data center. Personnel will be charged during walking on installed floors such as floor finishes, floor mats, and so on. Because floor materials and shoe types are not restricted in data center, the probability of occurrence of high human body voltage during walking increase. This high human body voltage will cause human body discharge event. When a person happens to be carrying a laptop during walking in the office room or data center, the computer may also get charged. If the voltage is large enough, Cable discharge event may occur when you plug a cable into charged computer. The main content of this paper constitute of two parts, including human body voltage during walking on floor modeling and analysis, as well as cable discharge event design.The paper first gives a briefly describe on experimental scheme needed in research on human body walking voltage, including resistance parameter, human body voltage measurement methods, and the choose of walking pattern, relative humidity; Then, introduces a mathematical model explaining how human body voltage vary with time during walking and conducts several experiment about human walking voltage; Finally, for the purpose of studying Cable discharge event, a electrostatic discharge experiment is build. The experiment constitute of four section, including user cable charge process and cable discharge to interface circuit as well as measurement of discharge parameters.Experiments results show that the oscillating potential exponentially increases as a whole to a higher asymptotic value. Under pattern walking the oscillating potential has periodic; And, the factors that influence the voltage of human body during walking include temperature and relative humidity in the room, walking pattern of man, floor material types, footwear, metal object person hold, and so on; Third, under certain circumstances the body potential can reach considerable values going up to several kilovolts. Currrent amplitudes of a cable discharge event are a risk for electronic interfaces.