Authors: C. Fischer, M. Lušić, F. Faltus, R. Hornfeck, J. Franke
Abstract: Most existing localisation solutions cannot be directly integrated into production systems. Based on miniaturised electronics assemblies for radiolocation systems, modern assembly and interconnection technology is empowering near field localisation in assembly lines. This contributes to a real-time connection between real production and virtual images in corresponding service provision. A web-based worker information system (WIS) serves as a system integrator for radiolocation and tool controls. Based on geometry and process data from a 3-D CAD system, the WIS is able to assign order-specific target data and compare those with current data from tracking and control systems. The WIS represents necessary data graphically to the worker in a lean, ergonomic manner. Furthermore, the WIS can be used for documentation of measurements within an application scenario. Those can be deployed for evaluation and for improving near field localisation systems regarding accuracy and robustness. The benefits of our system integration are shown within product-specific assembly scenarios. One benefit is enabling work out of sight (non-visible range) guided through a virtual image on a screen. An error prevention (Zero-defect-assembly) can be realised by monitoring the actual positioning and therefore a correct assignment to screw locations. Even without augmented reality (AR) devices, comparative 3-D representations of real and virtual world are possible supporting mobile workshop employees with complex repairs. Difficult accessibility in particular, can be easily determined when carrying out maintenance and repair work by knowing the complete product structure. Our demonstration scenario is a manual workstation with a manually guided nut runner. The use of autonomous positioning systems for joining processes in manual assembly is one of the main goals. Our approach is to set up a fully web-based system for the assembly cell using node.js, web server (PHP), database (MySQL) and web client (JavaScript).
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