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ZigBee Based Wireless Sensor Networks and Its Applications in Industrial
Abstract:
Based on the study of the characteristics of ZigBee technology, and the analysis of the structure of wireless sensor networks. Proposed a new reliable, flexible and inexpensive WSN system based on the ZigBee technology.
Its structure that the MAC layer and the network layer of ZigBee been taken over wholly is given, and its node that integrates the WSN nodes and ZigBee module together, include both the hardware implementation and the software implementation based on TinyOS, is designed. At the end, analyzed the desired characteristics of the WSN system applied in industrial and proved that the new WSN system has a more vast range of prospects in the application in industrial.
Introduction:
Recently, advances in micro-electro-mechanical systems (MEMS) technology, wireless communications, and digital electronics have enabled the development of low-cost, lowpower, multifunctional sensor nodes that are small in size and communicate untethered in short distances.
Based on the collaborative effort of a large number of these tiny sensor nodes, Wireless sensor network (WSN) system is autonomous and operate unattended, adaptive to the environment. So it’s widely used in military, environment, health, home and other commercial areas. ZigBee is a new standard intended for low cost devices in automation, home controls and computer peripherals. It enables the broad-based deployment of wireless networks with low cost, low power solutions
Proposed System:
This article analyzed the ZigBee’s structure and characteristics, embedded the ZigBee technology into the realization of WSN systems, proposed a new, loop closed,
inexpensive, structure simple WSN architecture that can be widely used in the civil area. And based on the analysis of its application in industrial, the paper presented the basic
structure of the new WSN system and the hardware design of its intelligent nodes.
HARDWARE REQUIREMENTS:
1. Micro controller
2. Zigbee
3. Industrial Sensor
4. ADC
5. Serial Interface
Software Requirements:
1. Embedded C Compiler
2. Dot Net
Classification of Embedded Systems
Embedded systems are often required to provide Real-Time response. A Real-Time system is defined as a system whose correctness depends on the timeliness of its response. Examples of such systems are flight control systems of an aircraft, sensor systems in nuclear reactors and power plants.
For these systems, delay in response is a fatal error. A more relaxed version of Real-Time Systems is the one where timely response with small delays is acceptable. Example of such a system would be the Scheduling Display System on the railway platforms. In technical terminology, Real-Time Systems can be classified as:
• Hard Real-Time Systems - systems with severe constraints on the timeliness of the response.
• Soft Real-Time Systems - systems which tolerate small variations in response times.
• Hybrid Real-Time Systems - systems which exhibit both hard and soft constraints on its performance.
POWER SUPPLY:
DEFINITION:
A power supply (sometimes known as a power supply unit or PSU) is a device or system that supplies electrical or other types of energy to an output load or group of loads. The term is most commonly applied to electrical energy supplies, less often to mechanical ones, and rarely to others.