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In this paper we present a low cost fault-tolerant attitude determination system to a scientific satellite using COTS devices. We related our experience in developing the attitude determination system, where we combine proven fault tolerance techniques to protect the whole system composed only by COTS from the effects produced by transient faults. We detailed the failure cases and the detection, reconfiguration...
In this paper, we present a new technique to improve the reliability of H-tree SRAM memories. This technique deals with the SRAM power-bus monitoring by using built-in current sensor (BICS) circuits that detect abnormal current dissipation in the memory power-bus. This abnormal current is the result of a single-event upset (SEU) in the memory and it is generated during the inversion of the state of...
This paper presents a monitoring and handover mechanism which aims to minimize audio visual (AV) service disruption. Service discovery technology like UPnP has limited and inflexible fault tolerance feature. Our proposed monitoring and handover mechanism enhances the functionality of UPnP eventing. It consists of a Fault Analyzing Manager which proactively monitors changes of subscribed events and...
An organizational level test strategy needs to incorporate metrics to make the testing activities visible and available to process improvements. The majority of testing measurements that are done are based on faults found in the test execution phase. In contrast, this paper investigates metrics to support software test planning and test design processes. We have assembled metrics in these two process...
Mining power systems have a unique industrial environment: low short-circuit levels, high-power non-linear equipments, transient over-voltages, high altitude locations, dust, vibrations, etc., where faults easily occur affecting the integrity of the electronics equipment and drives reducing reliability with undesirable effects on safety and production. In order to reduce the occurrence of failures,...
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