@inproceedings{df661dc0de3240499d16d5316e8366dc,
title = "Simulation and implementation of an ultrasonic ranging experiment system",
abstract = "Ultrasonic ranging has been widely used in robot navigation and other fields. Aiming at the problems of high cost and low measurement rate of existing methods, an ultrasonic ranging experiment system based on periodic triggering, low-pass filtering, and AD conversion is designed in this paper. Take the frequency-resolved square wave signal as the trigger signal of the ultrasonic module, and the voltage follower and the second-order active low-pass filter circuit process the PWM wave signal output by the ultrasonic module to generate a stable voltage of 0-5v. An AD conversion chip is used to implement the analog-to-digital conversion on the stable voltage. And the current distance is instructed to avoid obstacles by a numerical comparator. The system can achieve distance measurement and obstacle early warning functions within a range of 2.55 meters, and the system is simple, low cost and easy to implement.",
keywords = "Low-pass filtering, Obstacle warning, PWM signal, Ranging, Ultrasonic",
author = "Haosong Yue and Xinyuan Zhang and Zhexin Shi",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 2nd International Conference on Computer Science and Educational Informatization, CSEI 2020 ; Conference date: 12-06-2020 Through 14-06-2020",
year = "2020",
month = jun,
doi = "10.1109/CSEI50228.2020.9142515",
language = "英语",
series = "Proceedings of 2nd International Conference on Computer Science and Educational Informatization, CSEI 2020",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "28--31",
booktitle = "Proceedings of 2nd International Conference on Computer Science and Educational Informatization, CSEI 2020",
address = "美国",
}