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Combining with the characteristics of intelligent transportation system and introduces wireless sensor networks technology. This paper illustrates a kind of intelligent transportation system solution of wireless sensor networks based on ZigBee technology. Through the comprehensive analysis of three respects of network topology, energy saving as well as being stable and reliable, this paper brings...
With the development of intelligent transportation system (ITS), information-collection plays an increasingly important role. Research is based on Zigbee protocol for wireless sensor network technology, combined with video coding, designed a traffic data-acquisition system. Network nodes are distributed in the monitored area regularly, and responsible for collecting traffic video information, self-organizing...
This paper describes an on-line monitor system based on wireless sensor networks, which could test the ingredients of vehicles' off-gases, and also introduces the design of the hardware and software in details, and transplants the Zigbee protocol on the system at last. With the character of portability and the high precision gas sensors, the system could monitor the off-gases and distinguish the ingredients...
There are theoretical and empirical RSS-based algorithms proposed and many studies have been made by comparing the performance of these algorithms. However, there is a lack of theoretical basis and understanding on the orientation of vehicles without GPS. This paper presents a model for an orientation-aware location tracking manner for the detections of vehicles using wireless sensors based on IEEE...
We propose a Zigbee technology based wireless vehicle identification and driver authentication system consisting of a central database of authorized vehicles, Zigbee RF Vehicle tags, RF tag Reader and RF tag Writer. Zigbee is based on IEEE 802.15.4 standard for Wireless Personal Area Networks (WPANs) that is being used in many commercial and research applications today where it has become an attractive...
A real-time exhaust monitoring system that based on NDIR and ZIGBEE is proposed in accordance with the Lambert-beer law and the fact that gas could absorb infrared ray selectively. There are several characteristics of this system. First, a new non-dispersed infrared gas sensor with electro-modulated infrared photo-source is used, and the mechanical modulator that commonly appears in traditional method...
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