<p>Rapid Granulator is one of the world's largest producers of granulators, which is a kind of grinder</p><p>who grinds discarded plastics to granules which later can be reused when pressure molding plastics.</p><p>The company wanted help in developing a new, or alternatively extending their previous,</p><p>measurement equipment. The old equipment was hard to use, required changes in the code for</p><p>different measurement scenarios and had a limited array of measuring quantities. Rapid had an idea</p><p>of a similar concept only with a greater number of input ports, better range of applicable sensors and</p><p>an advanced yet easy to use interface. The system is supposed to be placed at Rapid's test department</p><p>where it will be used as a tool for finding faults and provide data which can be used for further</p><p>development of the granulators.</p><p>The project's members accepted the task and immediately began searching for suitable components</p><p>for the system. After the search was completed a list of costs, limitations, sensors, I/O's and</p><p>development environment was presented to Rapid's staff. In consultation with their staff some</p><p>components were ordered, and the development team was asked to keep the system open for future</p><p>upgrades.</p><p>Some difficulties arose when shipment times which were promised to four weeks actually took six</p><p>weeks. In the mean time the chassis of the measurement cart were constructed. One working day was</p><p>spent at Rapid's workshop to assemble the cabinets with the rack and the wheelbase.</p><p>LabVIEW arrived first and quite a lot of time was spent on getting acquainted to the program. When</p><p>the parcel containing all the electronic material arrived, everything was mounted and the final stage</p><p>involving programming and testing of the sensors and the measurement cart could commence.</p><p>Tests with accelerometer, strain gauges and PT-100 showed that the measurement unit worked. The</p><p>sampled data acquired from the cart were compared to measurements made with calibrated</p><p>instruments.</p>

Rapid Granulator is one of the world's largest producers of granulators, which is a kind of grinder who grinds discarded plastics to granules which later can be reused when pressure molding plastics. The company wanted help in developing a new, or alternatively extending their previous, measurement equipment. The old equipment was hard to use, required changes in the code for different measurement scenarios and had a limited array of measuring quantities. Rapid had an idea of a similar concept only with a greater number of input ports, better range of applicable sensors and an advanced yet easy to use interface. The system is supposed to be placed at Rapid's test department where it will be used as a tool for finding faults and provide data which can be used for further development of the granulators. The project's members accepted the task and immediately began searching for suitable components for the system. After the search was completed a list of costs, limitations, sensors, I/O's and development environment was presented to Rapid's staff. In consultation with their staff some components were ordered, and the development team was asked to keep the system open for future upgrades. Some difficulties arose when shipment times which were promised to four weeks actually took six weeks. In the mean time the chassis of the measurement cart were constructed. One working day was spent at Rapid's workshop to assemble the cabinets with the rack and the wheelbase. LabVIEW arrived first and quite a lot of time was spent on getting acquainted to the program. When the parcel containing all the electronic material arrived, everything was mounted and the final stage involving programming and testing of the sensors and the measurement cart could commence. Tests with accelerometer, strain gauges and PT-100 showed that the measurement unit worked. The sampled data acquired from the cart were compared to measurements made with calibrated instruments.

Den här rapporten presenterar ett examensarbete där ett mätdatainsamlingssystem för dynamiska signaler har skapats. Arbetet har utförts på Siemens Industrial Turbomachinery AB. Problemet är av sådan natur att tre olika typer av signaler analyseras. Dessa signaler är dels dynamiska signaler med ett intressant frekvensinnehåll mellan 10 och 10 000 Hz, dels likspänningssignaler och dels varvtalssignaler. Dessa signaler datasamplas och analyseras med avseende på både tids- och frekvensinnehåll. Resultatet skickas vidare till en server med en uppdateringsfrekvens kring 1 Hz. Arbetet har inneburit att en kravanalys av systemet har tagits fram utifrån ett redan existerande system och från intervjuer med tänkta användare av systemet. Utifrån den skapade kravprofilen valdes lämplig hårdvara och mjukvara implementerades med hjälp av LabVIEW. Resultatet blev ett system som lever väl upp till förväntningarna.

Glava Energy Center har gett mig i uppdrag att skapa ett system som kan hantera mätdatainsamling för solceller. Projektet går ut på att mäta ström och spänning från solceller och sedan skicka denna mätdata till en metrum instrumentlåda som sedan laddar upp datan till deras databas. Med hjälp av ett mikrokontrollerkort och en IC skapas detta system för att hämta data. Datan kollas sedan via python kod för att se så att den stämmer väl med vad som förväntas. Systemet som utvecklats hittar solcellens MPP inom 20 sekunder. Dock tack vare tidsbrist kan inte systemet skapa den analoga signalen på 4-20mA som krävs för att skicka datan till metrum instrumentlådan. Den teoretiska kretsen är färdig men har inte hunnit implementeras. / <p></p><p></p>