Next Article in Journal
A Survey on Multimedia-Based Cross-Layer Optimization in Visual Sensor Networks
Next Article in Special Issue
Weighted Least Squares Techniques for Improved Received Signal Strength Based Localization
Previous Article in Journal
A New Dual-Frequency Liquid Crystal Lens with Ring-and-Pie Electrodes and a Driving Scheme to Prevent Disclination Lines and Improve Recovery Time
Open AccessArticle

Infrared Sensor System for Mobile-Robot Positioning in Intelligent Spaces

Department of Electronics, University of Alcalá, Alcalá de Henares, Madrid, 28801, Spain
Author to whom correspondence should be addressed.
Sensors 2011, 11(5), 5416-5438;
Received: 15 March 2011 / Revised: 14 May 2011 / Accepted: 16 May 2011 / Published: 18 May 2011
(This article belongs to the Special Issue Sensorial Systems Applied to Intelligent Spaces)
The aim of this work was to position a Mobile Robot in an Intelligent Space, and this paper presents a sensorial system for measuring differential phase-shifts in a sinusoidally modulated infrared signal transmitted from the robot. Differential distances were obtained from these phase-shifts, and the position of the robot was estimated by hyperbolic trilateration. Due to the extremely severe trade-off between SNR, angle (coverage) and real-time response, a very accurate design and device selection was required to achieve good precision with wide coverage and acceptable robot speed. An I/Q demodulator was used to measure phases with one-stage synchronous demodulation to DC. A complete set of results from real measurements, both for distance and position estimations, is provided to demonstrate the validity of the system proposed, comparing it with other similar indoor positioning systems. View Full-Text
Keywords: infrared position measurement; phase measurement; robots; sensors infrared position measurement; phase measurement; robots; sensors
MDPI and ACS Style

Gorostiza, E.M.; Lázaro Galilea, J.L.; Meca Meca, F.J.; Salido Monzú, D.; Espinosa Zapata, F.; Pallarés Puerto, L. Infrared Sensor System for Mobile-Robot Positioning in Intelligent Spaces. Sensors 2011, 11, 5416-5438.

Show more citation formats Show less citations formats

Article Access Map

Only visits after 24 November 2015 are recorded.
Back to TopTop