聊城大学学报：自然科学版2012，Vol.25Issue(4)：27-29,61,4.
用霍尔传感器测量金属线胀系数
Measurement of Metal Linear Expansion Coefficient by Hall Sensor
罗俊杰1
作者信息
- 1. 盐城师范学院物理科学与电子技术学院,江苏盐城224002
- 折叠
摘要
Abstract
Measurement of metal linear expansion coefficient was an important content in college physical experimental teaching. It also had important application value for project design, manufacture of machine, etc. The traditional measurement method of light leverage had some shortages, such as many factors of introducing error, large error, unstability, etc. In this paper, the new idea of measurement of metal linear expansion coefficient by hall sensor was suggested. First, the sensor was calibrated to get the corresponding relation of the displacement of the sensor and the output voltage. Then, the ti- ny length change of the copper tube which caused by temperature change was measured by the sensor, and the measurement result of the copper tube linear expansion coefficient was got. The experimental result showed that the method had well stability and high measurement accuracy.关键词
霍尔传感器/线胀系数/定标Key words
Hall sensor/linear expansion coefficient/calibration分类
数理科学引用本文复制引用
罗俊杰..用霍尔传感器测量金属线胀系数[J].聊城大学学报：自然科学版,2012,25(4):27-29,61,4.
