微型机与应用2017，Vol.36Issue(9)：78-80,84,4.DOI:10.19358/j.issn.1674-7720.2017.09.023
一种改进的高精度超声波液位测量方法的研究
Research on an improved method of ultrasonic distance measurement with high precision
田文成 1周西峰 1郭前岗1
作者信息
- 1. 南京邮电大学 自动化学院,江苏 南京 210023
- 折叠
摘要
Abstract
Although the distance measurement using ultrasonic transducer is provided with lots of advantages, it is difficult to achieve a high precision due to being subjected to many factors.In this paper, the principle of ultrasonic distance measurement is described.Because the ultrasonic distance measurement system of temperature compensation or temperature and humidity compensation with one sensor is single and does not achieve high precision on the bad and mutable environment, and that of standard baffle compensation with two sensors costs much and is not applied for each field, this paper designed the standard baffle with one sensor, using a servo to control the direction of the sensor.Because the system does not balance the precision and range, this paper designed the double-frequency ultrasonic measurement.The experimental results show that using atmosphere as the media and water as the reflector, in the range of 7 m the error of the improved distance measurement can be less than 0.4%.The improved method can realize low cost and high precision ranging on the bad and mutable environment.关键词
标准挡板/可变增益/高精度/低成本Key words
standard baffle/variable gain/high precision/low cost分类
信息技术与安全科学引用本文复制引用
田文成,周西峰,郭前岗..一种改进的高精度超声波液位测量方法的研究[J].微型机与应用,2017,36(9):78-80,84,4.
