New Concepts for PTR Functionality in Fixed Domes

Abstract: This report describes the design and development of new concepts for pan, tilt and rotate functionality in fixed domes at Axis Communications. The aim of the master’s thesis was to generate a concept that are smaller and less expensive compared to the solutions today. Remote pan, tilt and rotate is a unique feature which makes it possible to remotely control a camera during installation and redirection. At Axis this solution is called “remote PTR solution”, which means that the camera can pan, tilt and rotate remotely. Most of the information needed for the project was gathered at Axis during interviews and workshops. In parallel to the concept generation benchmarking, patent search and other research was made. The result from this showed that the combination of pan, tilt and rotate in fixed domes are not as common as only pan and tilt. Due to the complexity of the problem it was divided into three sub problems. The first sub problem was to find a suitable electromechanical technology that enables movement. The most suitable electromechanical technology found was electrical motors. The next sub problem was to further investigate and evaluate different electrical motors. The most suitable electrical motors found was a stepper motor and a piezo motor. The final sub problem was to generate concepts with these motors. After the concept generation a final concept was chosen. The final concept consists of three stepper motors and gear wheels of different types. The final concept was further developed and a CAD model was made. The proof of concept is a 3D printed model that shows that the pan, tilt and rotate functionality works. A financial analysis was made which shows that the concept is in fact less expensive compared to the solutions that exists today.