Abstract:Wireless Sensor Networks (WSNs) are versatile monitoring systems that can provide a large amount of real-time data in scenarios where wired infrastructures are inapplicable or expensive. This technology is expected to be handled by domain experts, who perceive a WSN as a (promised to be) easy to deploy black box. This work presents the deployment experience of a WSN, as conducted by domain experts, in a ground improvement area. Building upon off-the-shelf solutions, a fuel cell powered gateway and 21 sensor devices measuring acceleration, inclination, temperature and barometric pressure were installed to monitor ground subsidence. We report about how poor GSM service, malfunctioning hardware, unknown communication patterns and obscure proprietary software required in-field ad-hoc solutions. Through the lessons learned, we look forward to investigating how to make the deployment of these systems an easier task.
Abstract-Static and dynamic variations, which have negative impact on the reliability of microelectronic systems, increase with smaller CMOS technology. Thus, further downscaling is only profitable if the costs in terms of area, energy and delay for reliability keep within limits. Therefore, the traditional worst case design methodology will become infeasible. Future architectures have to be error resilient, i.e., the hardware architecture has to tolerate autonomously transient errors.In this paper, we present an FPGA based rapid prototyping system for multi-processor systems-on-chip composed of autonomous hardware units for error-resilient processing and interconnect. This platform allows the fast architectural exploration of various error protection techniques under different failure rates on the microarchitectural level while keeping track of the system behavior. We demonstrate its applicability on a concrete wireless communication system.
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