Combined scheduling of ultrasound and GPS signals in A wearable zigbee-based guidance system for the blind

Minseok Song, Wanhyung Ryu, Ahron Yang, Jaewoo Kim, Byeong Seok Shin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

We have designed and implemented a wearable ZigBee-based guidance system in which a main controller collects ultrasound and GPS signals from sensors attached to subcontrollers and provides appropriate directions to a blind person. The signals from the different sources need to be handled separately, which reduces the effective sampling rate, and may impact the quality of the guidance provided. To address this, we propose a new scheduling scheme that interleaves the two signals without collision, based on the on-line estimation of signal handling times. Experimental results show that this scheme increases a sampling rate by up to 71% compared with the simple scheme.

Original languageEnglish
Title of host publicationICCE 2010 - 2010 Digest of Technical Papers International Conference on Consumer Electronics
Pages13-14
Number of pages2
DOIs
StatePublished - 2010
Event2010 International Conference on Consumer Electronics, ICCE 2010 - Las Vegas, NV, United States
Duration: 11 Jan 201013 Jan 2010

Publication series

NameICCE 2010 - 2010 Digest of Technical Papers International Conference on Consumer Electronics

Conference

Conference2010 International Conference on Consumer Electronics, ICCE 2010
Country/TerritoryUnited States
CityLas Vegas, NV
Period11/01/1013/01/10

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