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1	Minnesallokering och debugverktyg / RAM Allocation and Debugging Tools Larsson, Johanna, Vestman, Linda January 2007 (has links) The aim of this report is to give a description of a diploma work of 20 points that has been performed during the spring 2006 at Ericsson AB in Borås. The report accounts for the problem and procedure during the diploma work. The software used for this project was embedded in a radio link. The RAM in this radio link was divided into several regions where two were used for memory allocation. The current allocation of memory in the radio link was not optimized with regards to performance, security and memory use and the configuration used made it difficult to determine the memory use of the system and the actual memory need. Furthermore, no garbage collection existed; this resulted in fragmentation and reduction in performance arising over time. The objective of the diploma work was to optimize the allocation of memory in the radio link's software and being able to measure the processor load and memory use. The project was managed according to a work method where UML-diagrams were used and the project deliverables were defined according to a process specification from Ericsson AB. The project was time-limited and has been performed in ten weeks by two students. The project was divided up in three iterations, each iteration consisting of a number of tasks. A milestone is set after each at which the intended tasks are validated and done with. An application fulfilling these requirements was developed, using C#.NET and Visual studio 2005, and that presents its results graphically. It is applicable in development, error search and verification of the radio link's software. ANSI-C and x86-assembler were used for development and modification of the software that is being executed in the radio link. Due to secrecy policies at Ericsson AB the report has been censored and the removed sections replaced with […]. / Uppsatsnivå: C mini-link embedded software debug minnesutnyttjande processorlast C# ericsson Engineering and Technology Teknik och teknologier
2	Application development of 3D LiDAR sensor for display computers Ekstrand, Oskar January 2023 (has links) A highly accurate sensor for measuring distances, used for creating high-resolution 3D maps of the environment, utilize “Light Detection And Ranging” (LiDAR) technology. This degree project aims to investigate the implementation of 3D LiDAR sensors into off-highway vehicle display computers, called CCpilots. This involves a study of available low-cost 3D LiDAR sensors on the market and development of an application for visualizing real time data graphically, with room for optimization algorithms. The selected LiDAR sensor is “Livox Mid-360”, a hybrid-solid technology and a field of view of 360° horizontally and 59° vertically. The LiDAR application was developed using Livox SDK2 combined with a C++ back-end, in order to visualize data using Qt QML as the Graphical User Interface design tool. A filter was utilized from the Point Cloud Library (PCL), called a voxel grid filter, for optimization purpose. Real time 3D LiDAR sensor data was graphically visualized on the display computer CCpilot X900. The voxel grid filter had a few visual advantages, although it consumed more processor power compared to when no filter was used. Whether a filter was used or not, all points generated by the LiDAR sensor could be processed and visualized by the developed application without any latency. LiDAR 3D sensor display computer application high-resolution 3D map visualize real time data CPU load Voxel grid filter Point Cloud Library Qt QML C++ Linux LiDAR 3D sensor fordons dator applikation högupplöst 3D-karta visualisera realtidsdata processorlast Voxel grid filter Point Cloud Library Qt QML C++ Linux Embedded Systems Inbäddad systemteknik

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Minnesallokering och debugverktyg / RAM Allocation and Debugging Tools

Application development of 3D LiDAR sensor for display computers