Optimising energy characteristics of Head Worn Displays for active use in factory environments

In this work it is described how to successfully extend the operating time of android-based wearable devices exemplified using the Head Worn Display Glass of Google Inc. Therefore, a use case at the AUDI A8 production line was picked for which an application already has been implemented. Ways to optimise power consumption have been examined and the usability of the application was improved by continuing applying the Human Centred Design process as described in ISO 9241-210. Hence, users were interviewed and their opinion on Mock-Ups and (functional) prototypes have been considered from the very beginning of the development process. The application finally was evaluated in a testing environment. It could be used without the interruptions by overheating or lack of battery capacity, which occurred before. Furthermore, the participants were able to fulfil their work tasks about 25 s faster than without the device.