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Design and development of electronic compasses
2006 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Silva Sweden AB has developed a new compass transducer module, that will be used for OEM (Original Equipment Manufacturing) business as well as in Silva´s own products. In order to market the module, the company has decided to develop a number of products around this module. The aim with the master thesis work is to develop two new products that are based around the new compass module that Silva Sweden AB has developed. As the two products differ from each other, the thesis work will be divided into two projects, referred to as Project 1 and Project 2. The aim with Project 1 is to incorporate the new compass module in a hand- held electronic navigation instrument. The development process will consist of designing the shell of the product, finding relevant features to incorporate in the product, and to design the user interface of the instrument: which includes button and display design. The aim with Project 2 is to develop a tactical compass made for use on dinghies. The development process will consist of designing the shell of the product, finding relevant features to incorporate in the product, and to design the user interface of the instrument: which includes button and display design. Also a mounting bracket for compass-attachment on the boat will be designed. Both of the projects are defined to be at a conceptual stage, whereby no drafting or preparation for manufacturing will be produced. To approach the projects in a systematic and structured way, a number of methods for product development have been used. Different methods have been used mixed together, but the general structure applied is taken from a method described by Ulrich and Epplinger in the book “Product design and development”. To gather data and get information about navigation and sailing two web surveys in the form of inquiries were conducted, one for each project. The inquiries together with, mind maps, product specifications and the question method served as the basis for the problem investigation and provided a good start for the concept development for both projects. To solve problems brainstorming sessions were held and different ideas was brought up. The ideas were continuously discussed and evaluated with Mr. Jan Silfvén, Product manager at Silva Nexus Marine. Criteria’s were formulated and weighted against each other. With the criteria’s ant the prior work ultimately final concepts were developed. The final concept for project 1 is a handheld device that is designed to be used in both outdoor and marine environments. To be as functional as possible in these environments, the compass is made very portable, but yet has a relatively big display. The main function of the product is to serve as an electronic compass made for both map-aligned navigation and sighting. In its standard version, the compass will also feature a built-in watch and stop-watch with included alarm function. The compass will also come as a hi- end version, which will have the following additional features: altimeter, thermometer/ barometer, time/date/alarm/stop-watch. The compass is also made so that it can be mounted vertically on e.g. a boat. To make the compass more compatible with a map, a rotatable bezel is placed on the top surface of the compass. The bezel has meridian lines printed on the top surface of it, which furthermore simplifies the map-alignment. On the top of the bezel, two sights that make up a gun-sight are also placed. A ruler used as a tool for map-alignment is integrated in the compass. The ruler is retractable, which means that it can slide in and out of the compass. The final concept for project 2 is a tactical compass with two separate displays that are united through a centre part. Both of the displays are hinged together to the centre part, which makes the angle between the displays adjustable. The adjustable angle between the displays makes the compass more versatile as it permits the compass to be viewed from a wider range of different angles, and more portable as the displays are foldable behind the centre part. To ensure that the compass is water tight it is wrapped up in a rubber bellow that is glued onto the surfaces of the compass. This also gives the compass a more united feeling, as it looks more like one part instead of three parts hinged together. To be able to mount the compass onto the mast, and to ensure that the displays can be adjusted to the same angle every time the compass is used, a mounting bracket was developed. The bracket is strapped onto the mast with a Velcro- strap. Once the bracket is strapped to the mast, the mounting, and demounting of the compass is done easily.

Place, publisher, year, edition, pages
Keyword [en]
Keyword [sv]
URN: urn:nbn:se:ltu:diva-43144ISRN: LTU-EX--06/014--SELocal ID: 10c34dd0-c40c-43a1-8154-0a2bb8700871OAI: diva2:1016373
Subject / course
Student thesis, at least 30 credits
Educational program
Ergonomic Design & Production Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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