Development of Micro Wireless Sensor Platforms for Collecting Data on Passenger-Freight Interactions
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2016-02-01
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TRIS Online Accession Number:01690081
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Edition:Final Report
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Abstract:Traditionally, pavement inductive loop sensors are used to collect real time traffic data for passenger-freight movement in roadways. This method, however, is expensive to install and maintain, and also requires an electronic control unit connected to the induction loop. In the last decade, significant improvements have been achieved in Micro-Electro-Mechanical System (MEMS) sensors domain with respect to size, cost and accuracy. Moreover, extreme miniaturization of RF transceivers and low power micro-controllers motivated the development of small and low power sensors and radio-equipped modules, which are now replacing traditional wired sensor systems. These modules can communicate with other similar modules to build an intelligent sensing network. Due to process miniaturization and low power consumption, these “sensor nodes” can potentially remain functional years. Motivated by these novel advances, we propose a wireless MEMS sensor based passenger-freight interaction detection framework for Intelligent Transportation Systems (ITS). The proposed system is mainly composed of two parts: the sensor nodes that contain wireless Magneto-Resistive (MR) sensors to detect passenger freight vehicles and an Electronic Control Unit (ECU) to collect and generate the traffic data from sensor nodes’ data such as vehicle detection, speed, and most importantly, classification. The sensor’s primary function is to classify vehicles, which inherently includes detection. Through the use of machine learning algorithms, ECU can produce correct classification rates nearing 100%. Through the use of multiple sensors, the ECU can calculate and extrapolate the speed and level of congestion of the area where the sensors are installed. Our proposed solution will be significantly more cost effective than the traditional induction loop approach and is scalable to cover millions miles of roadways all over the US.
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