کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9699709 | 1461937 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Precise localisation of archaeological findings with a new ultrasonic 3D positioning sensor
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This paper presents a new ultrasonic sensor for 3D co-ordinate estimation, which has been especially designed to localize and sketch findings after they are extracted by archaeologists. Classical tasks at paleo-archaeological excavations are: measuring position with metric tapes, drawing a sketch of found object, and introducing all information into a database manually; operations that are not efficient and prone to errors. The positioning system we have designed allows simultaneous characterization of several findings (absolute position, shape, size and orientation) using as a tool a wireless 2-m-long rod, whose lower tip has to be placed on the object under study. The system contains two ultrasonic emitters and employs the time-of-flight (TOF) the ultrasonic signal takes to reach several fixed receivers, and a robust trilateration algorithm to determine the position of the rod tip with 10âmm accuracy. Object position and contour information are automatically transferred to a database in a central computer avoiding manual typewriting. Airflow is the main source of positioning error in outdoor environments, so a strategy based on a differential emitter fixed at a known position is used, which permits to cancel out the effects of uniform air motion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volumes 123â124, 23 September 2005, Pages 224-233
Journal: Sensors and Actuators A: Physical - Volumes 123â124, 23 September 2005, Pages 224-233
نویسندگان
A.R. Jiménez, F. Seco,