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Smart temperature sensor: DFM of a smart temperature sensor for high voltage installations
2016 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This report is the result of a bachelor degree thesis in the Industrial Design Engineering program at Lulea University of Technology. The thesis work has been implemented at Creator Teknisk Utveckling AB in Vikmanshyttan. The work has been a product development project about a smart temperature sensor that monitors the temperature of sensitive parts in high voltage substations. The purpose of the project has been to secure that the sensor will withstand environmental stresses and find a final design that makes the product more cost efficient to manufacture.The Swedish electricity grid can be divided into three different types of grids; Local grid, Regional grid and the National grid. These grids provides the customer with electricity from where it´s produced. Where these grids connect with each other, there are substations which can send the electricity with contained voltage or it can be transformed into a lower voltage. When service needs to be performed on the substations, for example maintenance work, the power must be cut off. That is done by a circuit breaker and a disconnecting switch. The breaker turns the power off and then the disconnector opens up to secure the safety of the service staff. These disconnecting switches are critical components, since attrition injuries can affect the components breakdown due to overheating. If Creator’s smart temperature sensor is used, the temperature can be monitored continuously and prevent costly power failures.The goal for this project was to make a prototype of the product with a design that protects the electronic parts from environmental stress without deteriorate the performance. The goal also included to get information of manufacturing costs for proper manufacturing methods to make 10 000 units. The project has followed a stage-gate model divided into four phases: project planning, context study, creative phase and detail development/concept. The project began with a structured project plan and an estimated time-schedule. Then the product was studied, as well as the high voltage environment where the product will be used. During the creative part of the project a workshop was held that, among other creative methods, generated a lot of different ideas. The result of these ideas generated three concepts that went through a concept selection. Trough that selection, one concept was chosen and further developed into two new concepts. Manufactures was contacted to get approximate manufacturing costs. The two concept was named Nigrum and Argentum. In the final selection, Nigrum was chosen as the final concept. Manufactures was contacted again to get more precise prices and manufacturing methods. The final concept Nigrum has a selling design that is adapted for manufacturing. The report also includes a theoretical framework of topics that have been important for the project.

Place, publisher, year, edition, pages
2016. , 67 p.
Keyword [en]
Keyword [sv]
Teknik, Smart temperatursensor, säljande design, Design for manufacture
URN: urn:nbn:se:ltu:diva-57656Local ID: e4cee16e-61c5-410a-b676-07b2c27e3832OAI: diva2:1031044
External cooperation
Subject / course
Student thesis, at least 15 credits
Educational program
Industrial Design Engineering, bachelor's level
Validerat; 20160704 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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