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Sensors 2009, 9(12), 10190-10200; doi:10.3390/s91210190

Distance and Cable Length Measurement System

Department of Física Fundamental y Experimental Electrónica y Sistemas, Universidad de La Laguna, 38200, SpainDepartment of Física Fundamental y Experimental Electrónica y Sistemas, Universidad de La Laguna, 38200, Spain
Departament of Ingeniería de Sistemas Automática y Arquitectura y Tecnología de Computadores, Universidad de La Laguna, 38200, Spain
Author to whom correspondence should be addressed.
Received: 30 October 2009 / Revised: 2 December 2009 / Accepted: 7 December 2009 / Published: 16 December 2009
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain)
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A simple, economic and successful design for distance and cable length detection is presented. The measurement system is based on the continuous repetition of a pulse that endlessly travels along the distance to be detected. There is a pulse repeater at both ends of the distance or cable to be measured. The endless repetition of the pulse generates a frequency that varies almost inversely with the distance to be measured. The resolution and distance or cable length range could be adjusted by varying the repetition time delay introduced at both ends and the measurement time. With this design a distance can be measured with centimeter resolution using electronic system with microsecond resolution, simplifying classical time of flight designs which require electronics with picosecond resolution. This design was also applied to position measurement. View Full-Text
Keywords: distance; cable length; repetitive pulse; localization distance; cable length; repetitive pulse; localization

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Hernández, S.E.; Acosta, L.; Toledo, J. Distance and Cable Length Measurement System. Sensors 2009, 9, 10190-10200.

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