粉尘云最小点火能测量与研究毕业论文.doc

粉尘云最小点火能测量与研究 作者姓名： 指导教师： 单位名称： 信息科学与工程学院 专业名称： Measure and Research on the Minimum Ignition Energy of Dust Clouds 毕业设计（论文）任务书 毕业设计（论文）题目： 粉尘云最小点火能测量与研究 设计(论文)的基本内容： 1、熟悉粉尘云最小点火能的测量相关标准； 2、查阅相关文献资料； 3、设计粉尘云最小点火能测量仪器系统； 4、编写最小点火能采集、计算等相关程序； 5、调试粉尘云最小点火能测量仪器系统。 毕业设计（论文）专题部分： 题目：　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 设计或论文专题的基本内容： 学生接受毕业设计（论文）题目日期 　　　　　　　　　　　　　第　1　周 指导教师签字： 2009年3月5日 粉尘云最小点火能测量与研究 摘 要 ZedGraph绘制图形，实现了采集到的放电电压电流波形的重现，绘制功率曲线间隙电阻曲线和计算点火能量的功能。 关键词：easure and Research on the Minimum Ignition Energy of Dust Clouds Abstract The minimum ignition energy (MIE) is one of the most important characteristics of dust explosibility and it is very important for the hazard analysis and the prevention of explosion and combustion. At present, the minimum ignition energy is measured according to the standards of the VDI 2263 IEC 31and GB/T16428-1996. Equipments and methods of voltage and current measurement of discharge spark system in the MIE measuring system are generalized. It is recommended that commercial high voltage probe is used to measure discharge voltage waveform and diverter is used to measure discharge current waveform. Discharge waveforms are record by a Tektronix TDS1012B digital storage oscilloscope. Circuit of capacitor discharge sparks with decaying natural type was used in the ignition equipment. A high voltage power supply is used to charge the capacitance. A triggering pulse is applied at the controlling gird of the thyratron to trig the thyratron, and let electrostatic discharge between two electrodes, and it ignite the dust cloud. Discharge waveforms are record by Tektronix TDS1012B digital storage oscilloscope. Basing on the voltage and current of discharge electrode which are acquired by the high speed data acquisition, integrate calculation of energy method is used to integral power and time of the spark discharge, which the MIE of dust cloud is calculated. Testing process control data acquisition and MIE calculate are processed in one compu