bluetooth based smart sensor network full report
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bluetooth based smart sensor network full report
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Device communication capabilities and continuous transparent information paths are indispensable components of future-oriented automation concepts. Communication is rapidly increasing in the industrial environment, even at the field level. In any industry the process can be performed through sensors and can be controlled through actuators. The process is monitored in the central control room by obtaining signals through a pair of cables from each field device in DCS (Distributed Control Systems). With the advent of the network concept, the cost of wiring is saved by networking the field devices. But the latest trend is the elimination of cables, that is, wireless networks. Wireless sensor networks - networks of small devices equipped with sensors, microprocessors and wireless communication interfaces.

In 1994, Ericsson Mobile Communications, the Swedish-based global telecommunications company, launched a study to investigate the feasibility of a low-cost, low-cost interface and find a way to eliminate cables between devices. Finally, Ericsson engineers named the new wireless technology as a "blue tooth" to honour the 10th century king if Denmark, Harald Blue tooth (940 to 985 A.D).

The objectives of the blue tooth are unification and harmony as well, specifically allowing different devices to communicate through a commonly accepted standard for cable less connectivity. The blue tooth operates in the unlicensed ISM band in the 2.4 GHz frequency band. A typical blue tooth device has a range of about 10 meters and can be extended to 100 meters. Communication channels support a total bandwidth of 1 Mb / sec. A single connection supports a maximum asymmetric data transfer rate of 721 KBPS at most three channels.

Wireless sensor networks - networks of small devices equipped with sensors, microprocessors and wireless communication interfaces - are a technology that has gained a lot of interest lately. The range of new and interesting applications, ranging from personal health care to environmental monitoring and military applications, is proposed for this type of network. Several wireless technologies such as simple RF, Bluetooth, UWB or infrared can be used for communication between sensors. This article describes the main principles, applications and problems of wireless sensor networks based on Bluetooth, as well as the implementation of a simple network of sensors based on Bluetooth. The main problems experienced during the implementation and the implemented solutions are presented.
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