Wireless sensing and communication system of roadways
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United States of America Patent
Stats
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Jul 6, 2004
Grant Date -
Jan 9, 2003
app pub date -
Jul 8, 2002
filing date -
Jul 9, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Wireless sensing and communication system including sensors located on the vehicle, in the roadway or in the vicinity of the vehicle or roadway and which provide information which is transmitted to one or more interrogators in the vehicle by a wireless radio frequency mechanism. Power to operate a particular sensor is supplied by the interrogator or the sensor is independently connected to either a battery, generator, vehicle power source or some source of power external to the vehicle. The sensors can provide information about the vehicle and its interior or exterior environment, about individual components, systems, vehicle occupants, subsystems, or about the roadway, ambient atmosphere, travel conditions and external objects. The sensors arranged on the roadway or ancillary structures would include pressure sensors, temperature sensors, moisture content or humidity sensors, and friction sensors.
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