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In car manufacturing, reworking involves completing the production steps not finished on the production line and/or rectifying the stages of production that were failed by Quality Assurance.
Reworking Assistance in Car Manufacturing
An efficient reworking process demands precise and up-to-date information on the workload of the individual reworking stations and the quantity of cars still to be reworked ("buffer area"). In addition, the cars and the free reworking stations must be located quickly and reliably. This is done in order to maintain the quality of production by examining and analysing key performance indicators, e.g. the average time taken by each car for reworking.
Continuous Location of Cars during Reworking
The solution is based on the Ubisense Real-Time Location System to track cars and tools with high resolution. This system allows the continuous location of cars to a spatial accuracy of 30 cm and a temporal resolution of 0.1 seconds. Spatial zones are assigned to the individual reworking stations and to the buffer area for cars that are waiting to be reworked. When a car enters or exits a zone, an event is triggered.