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Energy savings by wireless control of speed, scheduling and travel times for hauling operation
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0003-1974-6278
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0002-3986-1196
Volvo Construction Equipment, Eskilstuna, Sweden .ORCID iD: 0000-0002-2726-4503
2014 (English)In: IEEE Intelligent Vehicles Symposium, Proceedings, 2014, 1115-1120 p.Conference paper, Published paper (Refereed)
Abstract [en]

A Quarry and Aggregate production site consist of sequential production processes and activities to process and produce the output products. Compared to a fixed manufacturing plant, the quarry processes involve mobile machines such as wheel loaders, trucks and articulated haulers and a highly dynamic road infrastructure. Today, the mobile machines are generally not synchronized or controlled towards the overall throughput of the site in real time. This indicates a general improvement potential in increased productivity at quarry sites, but also unsolved challenges for the same reason. Assuming a wireless control system that controls speed and throughput of the different processes and activities, there would be a fuel reduction potential in controlling the mobile machines. This optimization requires models of machine fuel consumption for different applications, velocities and travel times. The main contribution of this paper is the presentation of fuel measurements based on different speeds, site application characteristics and travel times for hauling operation. The fuel measures reveal important aspects regarding how different velocities impact fuel consumption. The results of fuel measurements show a potential in fuel savings of up to 42% and a typical improvement of 20-30% depending on machine speeds, travel times, application and site characteristics. Based on this, some of the applications and challenges in wirelessly controlling machines are discussed.

Place, publisher, year, edition, pages
2014. 1115-1120 p.
Series
IEEE Intelligent Vehicles Symposium, Proceedings
Keyword [en]
Advanced Driver Assist Systems, Fuel Measurements, Hauling optimization, Vehicle Control
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:mdh:diva-25797DOI: 10.1109/IVS.2014.6856451Scopus ID: 2-s2.0-84905382501ISBN: 9781479936380 (print)OAI: oai:DiVA.org:mdh-25797DiVA: diva2:739158
Conference
25th IEEE Intelligent Vehicles Symposium, IV 2014, 8 June 2014 through 11 June 2014, Dearborn, MI, USA
Available from: 2014-08-20 Created: 2014-08-20 Last updated: 2016-09-27Bibliographically approved
In thesis
1. Productivity Improvements in Construction Site Operations through Lean Thinking and Wireless Real-Time Control
Open this publication in new window or tab >>Productivity Improvements in Construction Site Operations through Lean Thinking and Wireless Real-Time Control
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The purpose of a quarry is to extract rock material to deliver gravels, cement and asphalt to its customers. These products are important input to the construction and maintenance of road infrastructure, buildings and more. The operation of quarry and road work sites is similar to factory production, since it contains sequential production processes, tasks and activities to produce the output product. Compared to the factory, the quarry and road work processes are generally not synchronized and controlled towards the overall throughput in real-time. Some sites control parts of the production but do generally not utilize real-time technologies for the whole site and all its activities. This fact indicates a general improvement potential in increased productivity, but also unsolved challenges for the same reason.

 

This thesis investigate how Lean thinking utilizing real-time control and wireless communication can be used to improve productivity and safety in the operation of quarry and road construction. The main overall contribution is the identified operational improvements, its use cases, the system design constraints and challenges as well as assessed impact in productivity, energy efficiency and safety if introducing wireless real-time control to the site operation.

 

The results include the presentation and demonstration of a developed method based on Lean value stream mapping, for identifying wastes in sequential processes and activities including mobile machines. Further it investigates the performance and evaluates how the latest developments of wireless communication and vehicular ad-hoc networks (VANET) can be utilized within the quarry and road construction operation. The main system requirements and constraints are identified and the tradeoffs and gains in terms of system design, communication coverage, energy consumption and safety for the identified use cases are presented.

Abstract [sv]

Bergtäckter uppfyller viktiga funktioner eftersom de producerar olika typer av stenkross, cement och asfaltsprodukter nödvändiga för alla typer av byggnationer såsom vägar, tunnlar, broar och byggnader och dess underhåll.  Bergtäckt och vägarbetsprocessen består likt en industriell produktionsanläggning av sekventiella aktiviteter för att producera slutprodukten.  Men i motsats till moderna produktionsanläggningar så är inte alla aktiviteter och maskiner styrda mot genomflödet för anläggningen, vilket gör att aktiviteter med överkapacitet genererar kostnader i form av lager och onödig resursåtgång. Detta faktum indikerar en potential i produktivitetsförbättring för dessa segment, men också olösta utmaningar.

 

Den här uppsatsen utreder hur den inom produktionsteknik välkända Lean filosofin tillsammans med den senaste utvecklingen av trådlösa styrsystem kan användas för att förbättra produktivitet och säkerhet för bergtäckts och vägarbetssegmentet. Det huvudsakliga bidraget är identifierade förbättringar av produktivitet och säkerhet i den operativa verksamheten, dess användarfall, systemdesignens komponenter, utmaningar och begränsningar vid introduktion av trådlösa styrsystem.

 

Resultatet inkluderar redogörelsen av en utvecklad och demonstrerad metodik baserad på Lean - värdeflödesanalys för att identifiera slöseri i operativ verksamhet inkluderande mobila maskiner och fordon. Dessutom undersöker och utvärderar uppsatsen prestandan och användbarhet av den senaste utvecklingen av trådlösa kommunikationssystem baserat på ad-hoc nätverk för vägfordon. De övergripande systemkraven identifieras och nödvändiga avvägningar diskuteras i form av systemdesign, kommunikationsprestanda, kostnad, energibesparingar och säkerhetsförbättringar för segmenten.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2014
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 187
National Category
Computer Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:mdh:diva-26310 (URN)978-91-7485-173-1 (ISBN)
Presentation
2014-12-16, Gamma, Mälardalens högskola, Västerås, 13:15 (English)
Opponent
Supervisors
Projects
ITS-EASY
Funder
Knowledge Foundation
Available from: 2014-10-29 Created: 2014-10-29 Last updated: 2014-11-20Bibliographically approved

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