Cargando…

Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status

Logging continues to rank among the most lethal occupations in the United States. Though the hazards associated with fatalities are well-documented and safe distances from hazards is a common theme in safety education, positional relationships between workers and hazards have not been quantified pre...

Descripción completa

Detalles Bibliográficos
Autores principales: Wempe, Ann M., Keefe, Robert F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456079/
https://www.ncbi.nlm.nih.gov/pubmed/30976381
http://dx.doi.org/10.3390/f8100357
_version_ 1783409701299421184
author Wempe, Ann M.
Keefe, Robert F.
author_facet Wempe, Ann M.
Keefe, Robert F.
author_sort Wempe, Ann M.
collection PubMed
description Logging continues to rank among the most lethal occupations in the United States. Though the hazards associated with fatalities are well-documented and safe distances from hazards is a common theme in safety education, positional relationships between workers and hazards have not been quantified previously. Using GNSS-RF (Global Navigation Satellite System-Radio Frequency) transponders that allow real-time monitoring of personnel, we collected positioning data for rigging crew workers and three common cable logging hazards: a log loader, skyline carriage, and snag. We summarized distances between all ground workers and each hazard on three active operations and estimated the proportion of time crew occupied higher-risk areas, as represented by geofences. We then assessed the extent to which positioning error associated with different stand conditions affected perceived worker safety status by applying error sampled in a separate, controlled field experiment to the operational data. Root mean squared error was estimated at 11.08 m in mature stands and 3.37 m in clearcuts. Simulated error expected for mature stands altered safety status in six of nine treatment combinations, whereas error expected for clearcuts affected only one. Our results show that canopy-associated GNSS error affects real-time geofence safety applications when using single-constellation American Global Positioning System transponders.
format Online
Article
Text
id pubmed-6456079
institution National Center for Biotechnology Information
language English
publishDate 2017
record_format MEDLINE/PubMed
spelling pubmed-64560792019-04-09 Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status Wempe, Ann M. Keefe, Robert F. Forests Article Logging continues to rank among the most lethal occupations in the United States. Though the hazards associated with fatalities are well-documented and safe distances from hazards is a common theme in safety education, positional relationships between workers and hazards have not been quantified previously. Using GNSS-RF (Global Navigation Satellite System-Radio Frequency) transponders that allow real-time monitoring of personnel, we collected positioning data for rigging crew workers and three common cable logging hazards: a log loader, skyline carriage, and snag. We summarized distances between all ground workers and each hazard on three active operations and estimated the proportion of time crew occupied higher-risk areas, as represented by geofences. We then assessed the extent to which positioning error associated with different stand conditions affected perceived worker safety status by applying error sampled in a separate, controlled field experiment to the operational data. Root mean squared error was estimated at 11.08 m in mature stands and 3.37 m in clearcuts. Simulated error expected for mature stands altered safety status in six of nine treatment combinations, whereas error expected for clearcuts affected only one. Our results show that canopy-associated GNSS error affects real-time geofence safety applications when using single-constellation American Global Positioning System transponders. 2017-09-23 2017-10 /pmc/articles/PMC6456079/ /pubmed/30976381 http://dx.doi.org/10.3390/f8100357 Text en This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wempe, Ann M.
Keefe, Robert F.
Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status
title Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status
title_full Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status
title_fullStr Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status
title_full_unstemmed Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status
title_short Characterizing Rigging Crew Proximity to Hazards on Cable Logging Operations Using GNSS-RF: Effect of GNSS Positioning Error on Worker Safety Status
title_sort characterizing rigging crew proximity to hazards on cable logging operations using gnss-rf: effect of gnss positioning error on worker safety status
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456079/
https://www.ncbi.nlm.nih.gov/pubmed/30976381
http://dx.doi.org/10.3390/f8100357
work_keys_str_mv AT wempeannm characterizingriggingcrewproximitytohazardsoncableloggingoperationsusinggnssrfeffectofgnsspositioningerroronworkersafetystatus
AT keeferobertf characterizingriggingcrewproximitytohazardsoncableloggingoperationsusinggnssrfeffectofgnsspositioningerroronworkersafetystatus