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Polytechnique Montreal-Nicolas Saunier
Lund University-Aliaksei Laureshyn
  • White Paper
  • WP-0005
Published 2017-10-12 by SAE International in United States
To date, the universal metric for road safety has been historical crash data, specifically, crash frequency and severity, which are direct measures of safety. However, there are well-recognized shortcomings of the crash-based approach; its greatest drawback being that it is reactive and requires long observational periods. Surrogate measures of safety, which encompass measures of safety that do not rely on crash data, have been proposed as a proactive approach to road safety analysis. This white paper provides an overview of the concept and evolution of surrogate measures of safety, as well as the emerging and future methods and measures. This is followed by the identification of the standards needs in this discipline as well as the scope of SAE’s Surrogate Measures of Safety Committee.
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Generic Architecture for a Self-Powered Smart Sensor Interface in Avionic Application

SAE International Journal of Aerospace

Polytechnique Montreal-Saeid Hashemi
  • Journal Article
  • 2012-01-2126
Published 2012-10-22 by SAE International in United States
In this paper, we present a universal architecture for a reliable self-powered Smart Sensor Interface (SSI) in avionic applications. The SSI module consists of data acquisition and signal excitation paths. The power recovery unit harvests energy from data field bus to power up the SSI module entirely. Using integrated CMOS technologies, the interface is flexible and configurable to be integrated with and fully controlled by Transducer Interface Module (TIM) introduced in IEEE1451 standard. Employing data converters within the signal paths makes the SSI well suited for full digital control over specifications of the excitation signal and data processing algorithms. The interface can be used along with various types of position sensors including legacy R/LVDT, MEMS-based and optical ones. The analog parts of the SSI are implemented using IBM 0.13 μm CMOS process while its digital modules are realized in FPGAs. The Power Conversion Chain (PCC) of the SSI is also presented and its complex components are modeled in Verilog-A using a top-down modeling approach. The models make it possible to study over power transfer and…
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