基于霍尔元件的距离传感器研究.doc
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- 基于 霍尔 元件 距离 传感器 研究
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1、桂林电子科技大学毕业设计(论文)报告用纸 摘 要 介绍一种使用霍尔元件并且用单片机控制的微量位移测试仪,讨论了该测试电路的基本原理,主要功能以及相应实用电路的特点和设计要点,分析了该测量电路的电路结构,结构部分。霍尔传感器是基于霍尔效应原理,霍尔元件的使用,可以演唱会的物理信息,如电流,磁场,位移,压力,等等,为电动势输出。它属于电位型传感器。目前,这种传感器主要霍尔集成电路的核心单元是基于霍尔效应,这是通过集成电路技术。所以它不仅是一种集成电路,而是一种磁传感器。利用磁电阻效应霍尔元与磁感应强度的平方成正比例关系,通过改变磁铁和霍尔元件引起的电阻距离霍尔成分的变化,然后将电阻信号转换为电压信
2、号,测量电压信号的获取位移等效震级。根据霍尔传感器装置的特点,毕业设计选择,驱动相应的电路设计,电路板调试绘图板,使它工作,下载程序的调试,通过显示屏显示的位移信息的要求。在本文中,完成对实际霍尔元小位移的测量,通过一个d后显示最后转换成功。根据霍尔传感器的设计选择相应的驱动电路、数据采集电路,该显示驱动电路的设计,单片机程序设计,可获得距离信息显示。关键词:霍尔效应;单片机;控制;位移Abstract A special micrometer consisting of hall elements and microcontroller is presented.Its fundamenta
3、l principles,major functions and characteristics of the practical cricuits and discussed.Analysis of the circuit structure of the measurement circuit, structure.Hall sensor is the use of hall element based on the Hall effect principle, which can concert the physical information, such as current, mag
4、netic field, the displacement, pressure, etc, into electromotive force output. It belongs to the potential type sensor. At present, this kind of sensor is mainly hall integrated circuit and the core unit is based on the Hall effect, which is made through the integrated circuit technology. So it is n
5、ot only a kind of integrated circuit, but a kind of magnetic sensor.Proportional to the relationship using magnetic resistance effect Holzer element and magnetic induction intensity square, by changing the magnet and Holzer element distance caused resistance Holzer components are changed, then conve
6、rt the resistance signal into voltage signal, measuring the voltage signal to obtain the equivalent magnitude of displacement. Graduation design according to the Holzer sensor device characteristics are selected, driving the corresponding circuit design, drawing board, debugging circuit board to mak
7、e it work, download the program debugging, is displayed through the display screen with displacement information requirements.In this paper, to complete the measurement for small displacement by practical Holzer element, through the A/D conversion after the last successful on the display.According t
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