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NEXT GENERATION DATA ACQUISITION SYSTEM SPOTLIGHT ON SWEDEN


FEATURE SPONSOR


Synective is a partner in the Offshore West network and will be engaged in the RiaSoRII project together with other European players. Their focus is aimed towards creating a reliability framework for conditional monitoring of wave power units


BACKGROUND The company’s background is from automotive, defence and high-tech industry which served as a competence platform in achievements to support the needs of this exciting clean energy arena.


In the high technology industry, advanced sensor and camera systems is increasingly important for complex monitoring, active security, autonomous driving and other applications. Development of these products requires test systems and infrastructure to collect sensor data to train, evaluate and demonstrate algorithms, for instance for object classification. System authentication with Hardware-in-the-


Loop is another important part of many projects.


APPROPRIATE INPUT DATA Training and self-learning systems require appropriate input data. Hence during the development of such a system there is a need for communication with the surrounding environment through its sensors and interfaces. A vision system for vehicles typically obtain data from cameras, radar, lidar over communication buses such as CAN, FlexRay, and Automotive Ethernet. The data needs to be recorded with high


precision and bandwidth and reproduced while relationships between the different data streams are maintained.


DEVELOPING SYSTEMS Synective Labs have significant experience in developing such systems for the automotive industry. Based on these experiences, they are developing the next generation data acquisition system (DART).


THE NEXT GENERATION OF CABLES


NKT (formerly NKT cables) is one of Europe’s largest cable manufacturers, with a strong history of innovation Today, they are developing a new generation of cables to service the unique requirements of wave and tidal energy by working with Swedish technology developers CorPower, Minesto and Waves4Power. Irrespective of the principle used to convert waves or tides into electrical energy, power cables play a vital role in getting that energy to shore so it can generate revenue. Finding the optimal way to achieve this is both complex and necessary for the developers of ocean energy projects.


CENTRAL FOCUS For more than 125 years, innovation and technology development has been a central focus of NKT’s. The Danish company now also aims to support the transition to more sustainable forms of energy. Today, they are bringing their experience and expertise to bear on the challenge of developing optimal cable


36 www.wavetidalenergynetwork.co.uk


solutions for ocean energy, through a collaborative industry/research project. The project centres around the energy generating technologies of Waves4Power, CorPower and Minesto, three ocean energy technology developers with completely different energy capture concepts. The developers are support by the Research Institutes of Sweden (RISE) and Chalmers University.


SERVICE-FREE OPERATION The project will develop cables for connecting the energy convertors to a central collection hub, as well as high voltage cables from the hub to the shore. The aim of the project is to offer cables that will last for 20-25 years of service free operation.


RISE and Chalmers University have developed a mathematical model for 1kv power cables to simulate cable movements and calculate fatigue failure through the project. The model can be calibrated using different prototype cables that are produced by NKT and tested in six-month field trials.


FIRST FIELD TRIAL


The first field trial is now underway at Waves4Power demonstration site in Runde, Norway. The second trial will take place alongside CorPower’s deployment at the European Marine Energy Centre (EMEC) in Scotland later this year. Following the trials, models will be validated against data collected by monitoring equipment mounted on the wave energy convertors and on the cable itself. The project has had to overcome the considerable challenges associated with using such monitoring equipment in a harsh marine environment.


Based on the model and field trials, the


project will develop a method of accelerated fatigue testing in a laboratory environment which will evaluate different cable designs – an important tool for the ocean energy industry.


NKT


SYSTEM DESCRIPTION DART has a modular architecture including a configurable motherboard and separate interface card tailored to the sources to be recorded. The motherboard is based on programmable circuits, called SoC FPGA’s, allowing low latency and flexible performance. The devices programmability also enables easy modification to customise the interface to any set of sensors and system buses.


SUMMARY


By combining Synective Labs’ expertise in image processing with FPGA’s and their extensive experience in development of rapid real-time systems in areas such as automotive, finance and defence, they have been able to create DART. This datalogger is versatile and has a small form factor, low power, flexible feeding, passive cooling and can efficiently be adapted to each project’s needs.


Synective Labs


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