architecture for automation and telepresence in a … 4... · 2013-09-04 · architecture for...
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ARCHITECTURE FOR AUTOMATION AND TELEPRESENCE IN A MARINE HATCHERY LABORATORY
Jo Arve Alfredsen1, Morten Omholt Alver1,2, Tor-Inge Eriksen1
1. NTNU, Department of Engineering Cybernetics 2. SINTEF Fisheries & Aquaculture
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Outline
• Background - automation and marine larval and juvenile production
• The CodTech marine hatchery automation laboratory
• Development of an infrastructure for automation and telepresence in CodTech
• Lessons learned
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Larviculture: A process-oriented perspective
Production consists of a set of processes that are: • dynamic • interdependent • asynchronous • required to operate within
certain limits and at certain rates
Production goals: • Maximize fry quality • Maximize capacity • Maximize robustness • Minimize costs • ++
+ Water management system + Climate control system + Hygiene and cleaning system
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Controlling the production system optimally is a complex task. What tools are there to help us?
Observations
Operations
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Automation
• Automation is generic and one of modern society’s “enabling technologies” • Marine hatcheries should benefit from the lessons learned in other industries
where automation is well established • Traditional view of just saving labour costs is too narrow and must be
abandoned – Accuracy and consistency in operations → quality and robustness – New modes of operation that are impossible to implement with manual labour
• Automation required to achieve productivity and quality goals when scaling up and industrializing marine hatcheries
The collective use of machines, sensors, computers, ICT and automatic control to optimize capacity, quality, robustness and costs of a production process
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SCADA
HMI PLC
MPC
Robotics
Sensors
Automation system
Internet
DCS
Automation tools
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Challenges Nevertheless, “larviculture specialities” must be kept in mind:
• Complicated biological processes – Process knowledge sometimes limited
• Product is live organisms – Careful handling, ethical issues
• Special instrumentation needs – Can it be measured in a practical way?
• Challenging environment – Delicate electronic equipment in a wet and corrosive environment
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CodTech - Marine hatchery automation laboratory
• Research on larval production protocols
• Initially designed for cod larvae production
• Test-bed for hatchery automation technology
CodTech, NTNU Centre for Fisheries and Aquaculture
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Laboratory sections • Start feeding
– 18 larval tanks
– Robotic feeding
• Live feed production – 12 production tanks
– Rotifers, Artemia, copepods, algae
• Water supply system – SW, fresh
– Raw, matured, recirculated
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First feeding section • 18 tanks, V = 160 liters • Feeding robot
– 3 live feed silos, 2 dry feed silos – Automatic refill station – Feeding tables or feedback
controlled appetite feeding • Automatic live feed counting and
logging • Automatic live feed density control • Water quality and flow monitoring
and control • Lighting control • In-tank video cameras • Lab floor video camera • Network access
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Integration issues • System comprises a diverse set of equipment with:
– different user interfaces – different communication interfaces – different modes of operation
→ No common point of entry → Communication between subsystems difficult → Confusing and inaccessible for the operator → Higher risk of doing errors
Solution for “gluing” subsystems together to form one coherent and user-friendly system needed
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CodTech automation solution • Based on Proview – open
process control system • Modular design
– Development station – Process station – Operator station (HMI) – Storage station
• Open and extensible • Flexible integration of many
types of instrumentation • Free…
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Remote access • Networked computers monitor and control an increasing
number of laboratory tasks • Makes remote access to laboratory resources over the
Internet possible: – Real-time data always available – Closer follow-up of experiments – Adds flexibility to management of experiments – Telepresence
→ However, security needs to be handled carefully
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• CodTech is part of the EU FP7 Capacities project AQUAEXCEL (Aquaculture infrastructures for excellence in European fish research, www.aquaexcel.eu)
• Supports transnational access to facility for guest researchers
• System for remote access and telepresence in CodTech facility under development to facilitate remote users – certain aspects of experiments may be followed up from “home” – remote real-time and historical data monitoring – visual feedback from the lab floor, from robot and inside tanks – use the feeding robot to “move around in the lab doing things”
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Architecture for remote access Network security provided by:
• Physically isolating the automation network
• Forcing all access through a dedicated security appliance
• VPN login and firewall mechanisms
• Introducing user categories and privilege levels – Administrator – Privileged – Guest user
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Some lessons learned • Designing an automation system ad hoc may lead to integration issues as it
grows in size and when more advanced functions need to be implemented – You will eventually need a solution for tying everything together – Good solutions available, but design needs careful planning
• Requirements to the automation system can generally be divided in two
categories – Standard requirements → solved by “of-the-shelf” components – Process-unique requirements → purpose-built instrumentation and control systems
must be developed and commercialized
• The latter category demands – Resources to R&D – A strong and competent industry – Cross-disciplinary cooperation between biologists and engineers
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Thank you for your attention