TY - GEN
T1 - Combined scheduling of ultrasound and GPS signals in A wearable zigbee-based guidance system for the blind
AU - Song, Minseok
AU - Ryu, Wanhyung
AU - Yang, Ahron
AU - Kim, Jaewoo
AU - Shin, Byeong Seok
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=77950126542&partnerID=8YFLogxK
U2 - 10.1109/ICCE.2010.5418826
DO - 10.1109/ICCE.2010.5418826
M3 - Conference contribution
AN - SCOPUS:77950126542
SN - 9781424443161
T3 - ICCE 2010 - 2010 Digest of Technical Papers International Conference on Consumer Electronics
SP - 13
EP - 14
BT - ICCE 2010 - 2010 Digest of Technical Papers International Conference on Consumer Electronics
T2 - 2010 International Conference on Consumer Electronics, ICCE 2010
Y2 - 11 January 2010 through 13 January 2010
ER -