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Understanding Smart Sensors - Nomads.usp

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308 <strong>Understanding</strong> <strong>Smart</strong> <strong>Sensors</strong>Crush zone sensorTwo wiresOccupant sensingsystemSide impact sensorSide airbag Seatbelt pretensionersSeatbelt bucklesensorsFront airbags(multistage inflator)Central crashsensorSide airbagSide impact sensorSeatbelt pretensionersFigure 13.9 Automotive airbag system using the DSI standard. (Courtesy of Motorola andTRW.)13.7 SummaryThe initial stages of a smart architecture for sensors and networks are appearingin several different areas. The emphasis is being placed on interoperability andstandardization of protocols, along with the flexibility offered by an array ofcomponents from building blocks to monolithic solutions. As a result, nextgenerationcontrol systems can have a level of flexibility and functionality thatwill grow as the industry grows and expand as the applications require. However,no matter how many standards are available, applications may requirevariations or new alternatives, which eventually may become standards in theirown right.References[1] Lange, S. T., “What’s All This About Object Technology?” Control Engineering, Aug.1997, pp. 59–64.[2] Costlow, T., “Java Challenges Embedded-Systems World,” Electronic Engineering Times,Oct. 28, 1996, pp. 79, 81.[3] Logan, L., “Are You on the Right Bus?” <strong>Sensors</strong>, Aug. 1997, pp. 46–56.[4] Daniel, R. A., “A Case for Communicating Sensor Data via Ethernet,” I&CS, Oct. 1997,pp. 37–40.

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