Concept Development of Network Display Speaker

Sammanfattning

Network Display speakers are used as public address (PA) systems as security devices for effective communication of messages. Lately, one of the industry leading companies within IP network product systems launched their own take on this. This thesis aimed at developing a new display speaker in collaboration with them, focusing on sustainability, user feedback and new features. The project followed a Double Diamond design process. It started its research by conducting interviews with relevant stakeholders regarding the current product. The data gathered was analyzed and compiled into a technical specification, to act as a basis for the iterative development phase. Development of the new solution was divided into smaller segments that focused on one problem area at a time. Those areas were: Mesh attachment, Display attachment, Sealing, Form & Layout and speaker drivers. Lastly, solutions generated were evaluated and a final concept was chosen and made into a prototype. The final concept resulted in a portrait-oriented box with two speaker drivers and larger display. The products strobe was located at the top corners, together with a light indicator. At the bottom, a sunken motion detector was set to aid a potential impact protection (IK) rating test. Within the product, printed circuit boards (PCBs) were reduced to three. The inside consisted of two separate chambers, one for audio and one for electrical components, with a seal between them made of compressed silicone. Each chamber was sealed by their respective front-plate, which exploited a radial seal.