iosr-JEEE   Volume-11 ~ Issue-4 ~ July-August 2016

Abstract: The advancements in Wireless Sensor Networks (WSN) & Internet technologies, a new trend in era of ubiquity is being realized. The Enormous increase in users of Internet & modifications on internetworking technologies enable networking of everyday objects. The "Internet of Things (IoT)" is about physical items talking each other, machine to machine communications and person to computer communications will extended to "things". The Key technologies that drive future IoT related to Smart sensor technologies including Nanotechnology, WSN and Miniaturization............
Key Words: ARM7 microcontroller, AT89S52 microcontroller, Internet of things, WSN, zigbee.

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Abstract: In this paper, the issue of interactions of electromagnetic field with biological tissues is asked. Its interactions essentially depend on the electrical properties of the medium, themselves dependent on the frequency. The body is a loss dielectric medium. It interacts with the near field of the antenna; it will cause changing on antenna characteristics, reducing in performance and changing in impedance. This study of interaction is made with a rectangular loop antenna placed near a simplified model of the human body on ISM band especially 433MHz

Index Terms: Depth of penetration, electromagnetic field, human body, interaction human-antenna, wavelength

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Abstract: Road traffic accidents are one of the world's largest public health problems. To reduce these numbers, vehicle manufacturers are developing systems that can detect hazardous traffic situations and actively assist road users in avoiding or mitigating accidents. Collision Avoidance (CA) Mechanism is being identified as a suitable method for mitigating the road accidents. The main objective is to make the driver to attend only the emergency calls. Initially when a call is made to driver, he will receive a message intimating that the person is driving.............

Index Terms: Collision Avoidance (CA), Radio Frequency (RF), Universal Asynchronous Receiver Transmitter (UART), Special Function Register (SFR), Signal to Noise Ratio (SNR), Surface Acoustic Wave (SAW)

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