High-Precision Ultrasonic Ranging System Platform Based on Peak-Detected Self-Interference Technique

Autor:	Chih-Kung Lee, Wen-Jong Wu, Chau-Shioung Yeh, Chih-Ting Lin, Ji-De Huang
Rok vydání:	2011
Předmět:	Engineering business.industry Acoustics Ranging Time of flight Microcontroller Interference (communication) Range (statistics) Electronic engineering Waveform Ultrasonic sensor Electrical and Electronic Engineering business Instrumentation Common emitter
Zdroj:	IEEE Transactions on Instrumentation and Measurement. 60:3775-3780
ISSN:	1557-9662 0018-9456
Popis:	A high-precision ultrasonic ranging system platform is presented and evaluated in this work. By queuing peaks of the self-destructive interference, the proposed hardware platform can enhance the accuracy without complex algorithms. At the emitter, the developed technique generates two amplitude-modulated pulses with 180° phase shift. At the receiver, on the other hand, the two pulses create a self-destructive interference. This interference waveform can be used to directly determine the time of flight. By implementing the developed technique on a low-cost microcontroller platform, the experimental result shows the accuracy with 0.06 mm over a range of 50-1000 mm. Moreover, the system accuracy remains 0.15 mm within the range of 2000 mm. The developed system establishes an effective method for low-cost and high-performance ranging systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1c5b683a57dad07d374dbcff56020ef3 https://doi.org/10.1109/tim.2011.2149391 Zobrazit plný text záznamu