Holger Speckmann

Knowledge-based mobile remote engineering for maintenance processes

This paper presents the OMA system (Online Maintenance Assistance) for remote service support. The system is used to support complex maintenance processes by assistance from remote experts in an online video conference with integration to inspection workflow and devices. The system operates on Commercial of the Shelf hardware and in standard Web Browsers. It allows flexible integration into the enterprise IT e.g. in existing role and authentication concepts and is compliant to standard enterprise security regulations. The OMA system is still in development, but will be ready for use in the near future. Current research focuses on creating a model based signal monitoring function and improving the workflow support by using context awareness.

Hybrid low bandwidth transport for video, screen and sensor signals

Remote engineering systems are a valuable tool to give visual assistance and remote support e.g. in industrial service or Teleteaching. The origins of the OMA system (Online Maintenance Assistance) are the outcome of a european project for aircraft teleservice. It allows collaboration between mobile operators and supporting experts. An enhanced version supports sensor data exchange and context awareness. In Teleteaching the system is used to demonstrate experiments to remote viewers, which can actively control parts of the experiment and see the outcomes. The hybrid low bandwidth transport is an important base of the OMA system and combines different signals in a secure wide area tunnel. By using an adaptive coding control bandwidth priorities and compression are accommodated to the dynamic signal properties and the current working situation.

Content Adaptive Signal Compression for Remote SHM and NDT Operation

Remote engineering systems are valuable tools to give visual assistance and remote support e.g. in Structural Health Monitoring (SHM) or Non-destructive Testing (NDT). They allow discussing a second opinion with a remote expert and thus reducing the human factor during testing and monitoring. For an optimal impression of the situation, the second person requires both a camera view of the location and the screen view of the SHM/NDT system used. The Online Maintenance Assistance (OMA) system implements this two-view collaboration. Remote partners can see and actively control measuring equipment, while observing details of the location in the camera window. Due to varying screen signals and communication properties, an adaption for optimal visual quality of the camera and screen signal compression is required. The adaption is performed in a Machine Learning System (MLS), which uses an adapted k-nearest neighbors algorithm to adapt signal compression parameters to the measurement task and the communication channel. doi: 10.12783/SHM2015/148

Online Maintenance Assistance (OMA) - Remote control of service and lab experiments

Online Maintenance Assistance (OMA) is a tool for supporting Remote Maintenance. It was developed by Airbus and the University of Applied Sciences Osnabrueck, Germany. Operators performing maintenance tasks in front of an aircraft can use OMA to establish a conference to a remote expert. They can provide different camera views on of a maintenance part or location. In addition, the screen output of measuring devices or operation panels can be transferred to show measuring results. The expert has remote access to these systems and can configure them to improve his evaluation. The system can operate on normal laptops or tablets using encrypted internet connections. Porting to other application fields like service for agricultural machines is currently in preparation.

Outline of Overall Aircraft Imposed Requirements on Airframe Enhancements by Nanotechnologies and Resulting Opportunities

Ongoing development efforts in all stages of technological readiness have encouraged this paper which aims at outlining the predominant requirements which an aircraft structure does and will pose to new and emerging technologies. Particular emphasis is placed on the vast field of nanotechnologies. By outlining the broad requirements of an aircraft structure on new technologies, example studies and public long term scenarios, this paper aims at providing a broad guide to potential, new applications of micro-and nano-technology for structural aircraft applications.Copyright