高压静电吸力白板研制

论文编号:DQ325   论文字数:10405,页数:21

摘要
 随着静电应用技术的发展，人们对静电的理解也在不断的深入，由于其易于控制和对环境的要求较低，通过电子技术与静电特性相结合，静电技术被广泛的应用于工业技术和电子领域中。高压静电吸力白板就其中的用途之一。
 我们将直流电压通过倍压整流的方式将其升高到5000V的高压，然后将直流高压加在静电吸力白板上来电离周围空气，产生游离电子。当带电粒子向白板靠近的时候就会在其与白板之间产生力，它就能够将纸吸在上面。由于不能直接的将6V的直流电来升压，就要通过将直流转换成交流，再由变压器将其升压，因为如果光靠变压器来直接将电压升到5000V可能会引起变压器的损坏，所以要通过倍压整流的方式，将从变压器输出的电压通过倍压的方法将电压升高到5000V的要求。但是为了节约电能，就不能使电路长时间的导同，这会使电池的使用寿命大大降低，我们设计一种定时器来解决由于持续放电而造成的电量损耗，从而来节约电能的消耗。利用电容的充放点特性，就能够控制三极管的持续导通，从而就能起到定时开关的目的，再通过一继电器来实现电路的导通和关断，我们将延时时间定为 20秒。

关键词：高压静电 吸力白板 定时器 倍压整流

Abstract
 With the development of application technique of the static electricity, more and more are becoming known by people about the static electricity. Because of its easy controlling and low requirements on the environment, this technique has been wildly applied in the fields of industries and electronics through the combination of electronic technology and the characteristics of the static electricity. High-voltage electrostatic suction whiteboard is one of these applications.
 We will voltages through voltage DC rectifier way to increase its 5000 V to the high-pressure, and then added to the DC high-voltage electrostatic suction around the whiteboard of ionizing air, a free electronic. When the charged particles to the whiteboard and around the time its board will be in between, and it can be absorption in the paper above. Can not be directly due to the 6 V DC to boost, it is necessary to convert DC by the exchange, and then from their step-up transformers, because if rely on a direct voltage transformer to soar to 5000 V may cause damage to the transformer, so we should Rectification of times the pressure, the output voltage from the transformer times the pressure through the method of increasing the voltage to the requirements of 5000 V. However, in order to save power, can not lead with the long circuit, which will greatly reduce battery life, we design a timer to resolve the continued discharge of electricity caused by wear and tear, thereby to save power consumption. The use of capacitive-point of charge, will be able to control the continuing on-transistor, which will be able to play regularly switch to another through a relay circuit to achieve on-and off, we will delay the time as 20 seconds.
Keywords：High-voltage electrostatic   Suction whiteboard   Timer   Times the pressure rectifier

目录

1 前言 1
1.1 强电离放电理论 2
1.2脉冲静电技术 2
1.3电磁干扰 3
1.4静电生物效应 3
2 课题的背景和来源 4
2.1高压静电原理和应用 4
2.2环境与静电 5
2.3课题概述及主要任务 5
3  Multisim 9基本操作 7
3.1 Multisim 9基本操作界面及菜单栏 7
4  高压静电吸力白板 11
4.1延时开关 11
4.2 直流交流转换 11
4.3电容、二极管倍压整流原理 12
4.4 元器件的选用及注意事项 13
4.5电路工作过程 14
4.6 在该应用领域中的优势 15
5  调试及试验结果 16
5.1  仿真及实际调试 16
5.1.1仿真 16
5.1.2印刷板焊接调试 16
5.2 系统改进方向 17
6  总结 18
致谢 19
主要参考文献： 20
附录 电路系统 21