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Sensor Fusion in Time-Triggered Systems
, 2002
"... Sensor fusion is the combining of sensory data or data derived from sensory data in order to produce enhanced data in form of an internal representation of the process environment. The achievements of sensor fusion are robustness, extended spatial and temporal coverage, increased confidence, reduced ..."
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Cited by 30 (9 self)
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Sensor fusion is the combining of sensory data or data derived from sensory data in order to produce enhanced data in form of an internal representation of the process environment. The achievements of sensor fusion are robustness, extended spatial and temporal coverage, increased confidence, reduced ambiguity and uncertainty, and improved resolution. This thesis examines the application of sensor fusion for real-time applications. The time-triggered approach provides a well suited basis for building real-time systems due to its highly deterministic behavior. The integration of sensor fusion applications in a time-triggered framework supports resource-efficient dependable real-time systems. We present a timetriggered approach for real-time sensor fusion applications that partitions the system into three levels: First, a transducer level contains the sensors and the actuators. Second, a fusion/dissemination level gathers measurements, performs sensor fusion and distributes control information to the actuators. Third, a control level contains a control program making control
An Architecture supporting Monitoring and Configuration in Real-Time Smart Transducer Networks
, 2002
"... A smart transducer netsyork consists of a set of transducer nodes interconnected witit a digital bus. Smart transducer technology implicates the development of systems supporting the timely exchange of real-time data. Additional requirements are support for system integration, mechanisms for dynamic ..."
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Cited by 6 (3 self)
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A smart transducer netsyork consists of a set of transducer nodes interconnected witit a digital bus. Smart transducer technology implicates the development of systems supporting the timely exchange of real-time data. Additional requirements are support for system integration, mechanisms for dynamic reconfiguration, and diagnostic interfaces. Such systems should be compoxable and ease controlling system complexity, i.e. support the system engineer in understanding the system behavior.
An Architecture supporting Monitoring and Configuration in Real-Time Smart Transducer Networks
- In Proceedings of the IEEE Sensors 2002
, 2002
"... A smart transducer network consists of a set of transducer nodes interconnected with a digital bus. Smart transducer technology implicates the development of systems supporting the timely ex-change of real-time data. Additional requirements are support for system integration, mechanisms for dynamic ..."
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Cited by 4 (3 self)
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A smart transducer network consists of a set of transducer nodes interconnected with a digital bus. Smart transducer technology implicates the development of systems supporting the timely ex-change of real-time data. Additional requirements are support for system integration, mechanisms for dynamic reconfigura-tion, and diagnostic interfaces. Such systems should be com-posable and ease controlling system complexity, i. e. support the system engineer in understanding the system behavior. Furthermore, developers expect diagnostic services, which are deterministic, reproducible, and do not interfere with real-time services. This paper describes three interfaces for smart trans-ducer networks, which provide the required services while yield-ing the mentioned properties. We describe a case study demon-strating the effectiveness of the three interfaces for the pro-claimed purpose.
Wireless Time-Triggered Real-Time Communication
, 2004
"... Due to the increasing demand for mobility in the area of distributed systems, the use of wireless communication gains in importance. ..."
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Cited by 2 (1 self)
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Due to the increasing demand for mobility in the area of distributed systems, the use of wireless communication gains in importance.
A Standardized Smart Transducer Interface
, 2002
"... In December 2000 the Object Management Group (OMG) called for a proposal of a smart transducer interface. In response a new standard has been proposed that comprises a time-triggered transport service within the distributed smart transducer subsystem and a well-defined interface to a CORBA environme ..."
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Cited by 2 (1 self)
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In December 2000 the Object Management Group (OMG) called for a proposal of a smart transducer interface. In response a new standard has been proposed that comprises a time-triggered transport service within the distributed smart transducer subsystem and a well-defined interface to a CORBA environment. This smart transducer standard has been adopted by the OMG in January 2002. The smart transducer interface and the time-triggered transport service have been implemented in the time-triggered fieldbus protocol TTP/A.
Managing Fieldbus Systems
- IN PROCEEDINGS OF THE WORK-IN-PROGRESS SESSION OF THE 14TH EUROMICRO INTERNATIONAL CONFERENCE
, 2002
"... Digital fieldbus systems are increasingly becoming popular. The configuration and management of such a system, mainly carried out manually, is an expensive and errorprone task. Many existing fieldbusses provide means like "plug-and-play" that assist the user in these tasks. However the exi ..."
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Cited by 2 (2 self)
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Digital fieldbus systems are increasingly becoming popular. The configuration and management of such a system, mainly carried out manually, is an expensive and errorprone task. Many existing fieldbusses provide means like "plug-and-play" that assist the user in these tasks. However the existing solutions cover merely parts of the possible configuration and maintenance tasks. In this
Automatic Generation of Schedules for Time-Triggered Embedded Transducer Networks
"... Abstract – Time-triggered systems are advantageous for embedded applications, when determinism, hard real-time behavior, and a straightforward way for certification are required. However, when it comes to flexibility, time-triggered systems often require that possible extensions have been planned in ..."
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Cited by 1 (1 self)
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Abstract – Time-triggered systems are advantageous for embedded applications, when determinism, hard real-time behavior, and a straightforward way for certification are required. However, when it comes to flexibility, time-triggered systems often require that possible extensions have been planned in advance, which makes it difficult to apply unforeseen changes to such a system. This paper presents an approach that overcomes this problem by an automatic configuration of time-triggered distributed applications. Each application is decomposed into jobs and mapped on a set of distributed nodes, whereas each node hosts one or more jobs. Each job is defined by the following interfaces: a real-time input/output, a configuration and planning, and a diagnostic and management interface. Jobs, nodes, the application, and the global system configuration are represented with XML-based description formats, that provide a language-neutral semantic specification of the respective properties. A scheduling tool uses these descriptions to generate a time-triggered application that complies to the application specification. 1
Plug-and-Play: Bridging the Semantic Gap Between Application and Transducers
"... Abstract – Plug-and-play is an important mechanism for achieving component integration and improving interoperability in smart transducer systems. While recent research in smart transducer interfaces has achieved a syntactically well-defined interface to arbitrary sensors and actuators, current plug ..."
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Abstract – Plug-and-play is an important mechanism for achieving component integration and improving interoperability in smart transducer systems. While recent research in smart transducer interfaces has achieved a syntactically well-defined interface to arbitrary sensors and actuators, current plug-andplay approaches are limited by the semantic gap between the control application and the generic smart transducers. In this paper we propose a solution to this problem by establishing a smart interface system that consumes the sensor data from the smart transducers and provides a syntactically and semantically standardized interface to the control application. The smart interface system will be configured using data from the transducer meta-description, a system metadescription and the requirements from generic sensor data processing. As case study for such an interface system we present a generic high-level application component in form of the generic certainty grid, a sensor fusion algorithm for obstacle detection, and an approach for automatically configuring this application component and its associated smart transducer nodes in a plugand-play like manner. 1
A Comparison of Fieldbus Protocols: LIN 1.3, LIN 2.0, and TTP/A
"... Abstract – This paper compares the fieldbus protocols ..."
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