毕业论文外文翻译-霍尔电流感器及其应用.docVIP

河南理工大学 检测与转换技术翻译作业 姓 名： 学 号： 专业班级： 自动化11-1班 所在学院： 电气与自动化学院 2014年 01月10日 Hall Current Sensor and Its Application In the modern society, the information demand is huger and huger, and sensors play an important role in the information acquisition. They can turn all kinds of physical information, according to certain rules, into measurable electrical signal. Based on the changes of electrical signals we measured, and the related physical information relationship, we can gain the measured physical information changes or size. According to the working principle of the sensor, we can divide the sensors into many types, such as photoelectric sensor, charge sensors, potential type sensor, semiconductor sensor, the electricity sensor, magnetic sensor, resonant sensor, electric chemical formula sensor etc. Hall sensor is the use of hall element based on the Hall effect principle, which can concert the physical information, such as current, magnetic 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 not only a kind of integrated circuit, but a kind of magnetic sensor. According to the actual application, this article is mainly about the hall current sensor. Hall effect When we place a metal or semiconductor wafer in a magnetic field, and if there is a current through it, it will produce electromotive force in the perpendicular direction of the electric and magnetic field, calling this kind of physical phenomenon Hall effect. Figure 1 Hall effect principle diagram Under the action of the Lorentz force generated in the magnetic field, the carrier of energized semiconductor chip, deflect and accumulate respectively on both sides of the chip, thus forming a electric field, called the Hall electr