UdZ 2-2013

21 Unternehmen der Zukunft 2/2013 UdZ and provided to the shop-floor personnel using mobile devices. Regarding the end devices, role- specific user interfaces will be used, which take into account the information presentation and the cognitive load of the employee in his current task at the current time. The measured data and the collected information (from MES, ERP, etc.) will be processed and aggregated in real time. The general goal is to optimise both, the effi- ciency in production and the energy efficiency and safety in production in real time. Figure 1 (page 20) shows an illustration of the overall project approach. The solutions developed in the project will be used and tested in four application scenarios. These scenarios include a washing machine production line, a foundry in the automotive industry, the metal workshop of a shipyard and the demonstration plant of RWTH campus cluster logistics. By this approach, a representative pic- ture of typical industrial manufacturing processes should be formed. The application scenarios differ in focus on the different roles in production, but the aspect of energy efficiency will be treated in all scenarios. The first phase of the project is the requirement elicitation. In this phase, the requirements for the common platform are gathered at the premises of the application partners. As an overall approach, an integrated requirements engineering metho- dology will be used for all project partners. First, the actual processes of the application partners were analysed and tested for signi- ficant challenges. Based on the improvement potentials found, detailed use cases are defined, which do not include concrete solutions, but roughly show how the deficits could be avoided. For the elicitation of the specific requirements for the Sense&React platform use cases serve as a basis and will be combined to application scenarios in order to act as a validation of the whole project later. An example of a use case is the team leader sup- port. In the future, team leaders will be informed on their mobile devices about emergency situa- tions regarding malfunction of machines, poor quality of material or non-availability of materials, as well as the current production status. The requirements engineering methodology as shown in figure 2 is a methodology designed for the Sense&React project and distinguishes between user requirements and system requi- rements. The user requirements are derived from the identified potential improvements and are based on use-cases in which the platform should come in handy later. These requirements are formulated solely from the perspective of the later user of the system and are the main drivers of the project and their implementation has the highest priority. The system requirements will be derived based on the user requirements and the use-cases. These requirements are concrete formulations for specific system components, which will be divided into functional and non-functional requi- rements. The functional requirements describe the required functions and rules of the system, whereas non-functional requirements define the boundary conditions. The procedure described here covers the first four steps of the requirement engineering methodo- Figure 2: Sense&React Requirement Engineering Methodology FIR-Forschungsprojekte