安全保証のためのUWB測位によるジオフェンシング分析
Analysing Ultra-Wide Band Positioning for Geofencing in a Safety Assurance Context
動的工場で稼働するAGVの危険エリアへの侵入防止を目的に、UWB屋内測位によるジオフェンシングの性能を実験的に評価し、安全契約に基づく安全保証への適用方法を示した。
著者: Victoria Hodge, Richard Hawkins, James Hilder, Ibrahim Habli
分類: cs.RO, cs.SY, eess.SY
原文アブストラクト
There is a desire to move towards more flexible and automated factories. To enable this, we need to assure the safety of these dynamic factories. This safety assurance must be achieved in a manner that does not unnecessarily constrain the systems and thus negate the benefits of flexibility and automation. We previously developed a modular safety assurance approach, using safety contracts, as a way to achieve this. In this case study we show how this approach can be applied to Autonomous Guided Vehicles (AGV) operating as part of a dynamic factory and why it is necessary. We empirically evaluate commercial, indoor fog/edge localisation technology to provide geofencing for hazardous areas in a laboratory. The experiments determine how factors such as AGV speeds, tag transmission timings, control software and AGV capabilities affect the ability of the AGV to stop outside the hazardous areas. We describe how this approach could be used to create a safety case for the AGV operation.
